JPH09113770A - Pressurizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressurizing device capable of easily applying a uniform pressure with good balance on plural pressurizing parts. SOLUTION: A pressurizing arm 7 is so arranged that its front end faces a pressurizing adapter 4 mounted at an optical element holder 3 and plural pieces of pressurizing shafts 12 are circularly arranged at this front end by directing these shafts downward in such a manner that the shafts come into contact with the front end face of the pressurizing adapter 4. The respective pressurizing shafts 12 are held in the positions where the shafts come into contact with the front end face of the pressurizing adapter 4. Small air chambers 11 and large air chamber 10 housing the respective pressurizing shafts 12 freely slidably in a pressurizing direction are formed in the arm. The respective small air chambers 11 are sealed by a packing 13 in the state of inserting coil springs 15 onto the pressurizing shafts 12. Compressed air is fed into the large air chamber 10 from a compressor 8 through an air tube 9, by which the pressures in the small air chambers 11 are evenly increased and the uniform pressing force is developed on the respective pressurizing shafts 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure device used for welding work or the like by uniformly pressing and fixing the position-adjusted parts.

[0002]

2. Description of the Related Art Conventionally, in the optical device production process, when the optical fiber holder and the optical element holder are fixed by welding,
In order to keep the holders fixed, a pressurizing device as shown in FIGS. 3 and 4 is used.

FIG. 3 shows the structure of a pressure device used for welding and fixing the optical element holder 3 mounted on the optical element 1 and the optical fiber holder 5 mounted on the end of the optical fiber 2. Is. Further, FIG. 4 shows an arrow B- shown in FIG.
It is a figure when it sees from the direction of B '.

In FIG. 3, a clamp jig 6 fixes the optical fiber holder 5. The pressure adapter 4 is formed in a ring shape, covers the optical element holder 3, and its lower end surface engages with a flange portion formed on the peripheral surface of the optical element holder 3. Further, as shown in FIG. 4, a plurality (three in the figure) of pressure claws 201 to 203 are arranged on the upper end surface.

In the welding process, the optical fiber holder 5 is first fixed by the clamp jig 6. On the other hand, the optical element holder 3 incorporating the optical element 1 is used, and the optical fiber holder 5
An optical element holder 3 having a pressure adapter 4 mounted thereon is arranged with respect to the optical fiber 2 inside, and position adjustment is performed so that the internal optical element 1 is optically optimally coupled.
After adjusting to the optimum position, the tip ends of the pressure claws 201 to 203 are brought into contact with the upper end surface of the pressure adapter 4, and a small amount of pressure is balanced on each of the pressure claws 201 to 203 by manual operation many times. Add repeatedly. The pressing force of the pressing claws 201 to 203 presses the optical element holder 3 via the pressing adapter 4 to bring the optical fiber holder 5 and the optical element holder 3 into close contact with each other. As a result, the welding machine 14 can perform welding and fixing in a convenient manner.

However, it is necessary that the pressure pawls 201 to 203 be gradually and well-balancedly pressurized. For example, one of the plurality of pressure pawls 20 is a pressure pawl a and the other is a pressure pawl b, and the force of “1” is applied to the pressure pawl a and the other pressure pawl b is pressed. It is assumed that “2”, which is a double pressure, is pressurized. Then, the balance of the pressure applied to the pressure adapter 4 is lost,
The pressure claw a side floats lightly. Therefore, the optical fiber 2
Therefore, the optically optimal coupling state of the optical element 1 may be broken.

From the above, the pressure pawl a and the pressure pawl b are
The pressure must be gradually increased so that there is almost no difference in the applied pressure. In addition, since there is a possibility that the optimally coupled state may be destroyed due to the welding reaction force that occurs during welding, it is necessary to finally apply a pressing force that exceeds the welding reaction force. Therefore, in the conventional pressurizing device, each pressurizing claw 2
Since a method of manually applying a minute amount of pressure to 01 to 203 in a well-balanced manner repeatedly is used, it is necessary to have skill to apply uniform and well-balanced pressure to each of the pressure claws 201 to 203. It also took a long time to complete the pressurization. Further, when the peripheral space is small, it may be difficult to dispose a plurality of pressing claws 20.

As an example of the prior art, the actual development of Sho 60-10
Japanese Patent Publication No. 1173 (Japanese Patent Application No. 61-197004, Microfilm) discloses a uniform pressing device for processed parts. This device ensures connection processing by, for example, overlapping the land of the printed circuit board and the lead of the IC package and appropriately aligning them, and then holding the position so as not to shift during processing. Is. The configuration is such that a plurality of pins pressed by the same spring are pressed against the upper portion of the IC package, so that each pin applies the same pressure to the IC package.

However, in the case of the above-mentioned prior art example, since only the spring is used for the driving force of the pressing pin, the pressing force of each spring must be made uniform to obtain a uniform pressing force. It is difficult to uniformly adjust and maintain the pressing force of the spring.

[0010]

As described above, in the conventional pneumatic pressurizing arm, a method of manually applying a minute amount of pressure to each pressurizing claw in a well-balanced manner and repeating it repeatedly is provided. Since it has to be used, it takes skill to give a uniform and well-balanced pressure, and it takes a long time to complete the pressurization. Further, when the peripheral space is small, it may be difficult to arrange a plurality of pressure claws. An object of the present invention is to solve the above-mentioned problems, to easily apply a uniform pressure to a plurality of pressurizing portions in a well-balanced manner, and to perform pressure adjustment / change easily and surely, and further to reduce the peripheral space. It is to provide a pressurizing device that can be used in any case.

[0011]

In order to solve the above-mentioned problems, a pressure device according to the present invention is arranged to face a pressure surface of a positioned object, and is formed in the inside in a direction perpendicular to the pressure surface. A plurality of small air chambers having a cylindrical shape and a large air chamber connected to each small air chamber, and pressurizing a convex member in each of the plurality of small air chambers so that the tip end projects from the facing surface. A pressure arm which is slidably inserted in the direction, and compressed air supply means for feeding compressed air to the pressure arm, and the tip of the convex member is brought into contact with the pressure surface of the object. By sending the compressed air from the compressed air supply means to the large air chamber of the pressurizing arm, the compressed air is evenly sent from the large air chamber to the plurality of small air chambers so that the convex member is pressed in the pressing direction. I chose

In particular, the pressurizing arm is provided with a packing that seals the open end of the small air chamber in a state in which the convex member is inserted so as to prevent leakage of compressed air from the small air chamber. did. Moreover, an elastic member is interposed between the convex member and the packing so that the convex member returns to the initial position when not in use. Further, a holding means for holding the surface of the object opposite to the pressure surface is provided to prevent the object from moving due to the pressure. Furthermore, the compressed air supply means is provided with a pressure adjusting function for adjusting the pressure of the compressed air so that the pressing force can be arbitrarily set.

[0013]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described in detail below with reference to FIGS. FIG. 1 shows the structure of a pressure device according to the present invention. Further, FIG. 2 shows the configuration as seen from the direction of arrow AA ′ in FIG. Here, it is assumed that the object to be pressed is the optical circuit component shown in FIG. 3, the same parts as those in FIG. 3 are designated by the same reference numerals, and duplicated description will be omitted.

In FIG. 1, the tip end of a pressure arm 7, which is a feature of the present invention, is arranged above the pressure adapter 4 mounted on the position-adjusted optical element holder 3. A plurality of pressure shafts 1 are attached to the tip of the pressure arm 7.
2 are arranged circularly downward so as to contact the upper end surface of the pressure adapter 4. The pressure arm 7 has one end rotatably supported in the vertical direction (not shown), and is held at a position where a plurality of pressure shafts 12 abut on the upper end surface of the pressure adapter 4.

Each pressurizing shaft 12 is formed by vertically forming a pin on a cylindrical base. On the other hand, inside the arm 7, a cylindrical small air chamber 11 that slidably accommodates each pressurizing shaft 12 is formed in the pressurizing direction. Each small air chamber 11 has the open end sealed by the packing 13 in a state where the pressure shaft 12 is accommodated from the base side and the coil spring 15 is inserted therethrough.

Inside the arm 7, each small air chamber 11 is provided.
A large air chamber 10 is formed in the upper part of. The large air chamber 10 is connected to each small air chamber 11, and is further connected to the compressor 8 through the air tube 9. The compressor 8 generates compressed air, and is equipped with a pressure adjusting mechanism that arbitrarily sets the pressure. That is, in the pressurizing arm 7 having the above configuration, the compressor 8
By sending the compressed air generated in 1 into the large air chamber 10 through the air tube 9, the compressed air is sent from the large air chamber 10 to each small air chamber 11. For this reason, the pressure shaft 12 in each small air chamber 11 is pressed downward against the elastic force of the coil spring 15.

In the welding process, the optical fiber holder 5 is first fixed by the clamp jig 6 as in the conventional case.
On the other hand, the optical element holder 3 having the optical element 1 built therein is arranged, and the optical element holder 3 having the pressure adapter 4 mounted thereon is arranged with respect to the optical fiber 2 in the optical fiber holder 5. The position is adjusted so that 1 is in an optically optimal coupled state.

Next, the pressure arm 7 is arranged so that the plurality of pressure shafts 12 at the tip end contact the pressure adapter 4. In this state, the compressor 8 is driven to send compressed air into the large air chamber 10 through the air tube 9. As a result, compressed air is evenly sent into each of the small air chambers 11, and the pressure shaft 12 is evenly pressed against the coil spring 15. Therefore, the plurality of pressure shafts 12 uniformly press the pressure adapter 4, and the optical fiber holder 5 and the optical element holder 3 can be surely brought into close contact with each other. As a result, the welding machine 14 can perform welding and fixing in a convenient manner.

Here, the coil spring 15 is the pressure shaft 1.
It is for returning 2 to the initial position, and a relatively weak elastic force is sufficient. Therefore, the elastic force of the coil spring 15 can be ignored.

In the prior art, a method of applying uniform pressure manually with a plurality of pressure claws requires skill and requires a long time to complete the pressure application. Further, when the peripheral space is small, it is difficult to arrange a plurality of pressure claws 20. On the other hand, in the pressurizing device having the above configuration,
Since the plurality of pressure shafts 12 are operated by the same air source, it is possible to easily apply a uniform pressure to each pressure shaft 12 in a well-balanced manner. Further, since only one arm needs to be supported, it can be sufficiently used even when the peripheral space is small.

In the above embodiment, the pressure can be changed easily and reliably by changing the pressure of the compressed air by the compressor 8. Further, the pressure shaft 12 can be increased to any position as long as the space permits, as shown in FIG.

[0022]

As is apparent from the above description, according to the present invention, a uniform pressure can be easily applied to a plurality of pressurizing portions in a well-balanced manner, and pressure adjustment / change can be performed easily and reliably. It is possible to provide a pressurizing device that can be used even when the surrounding space is narrow.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of an embodiment of a pressure device according to the present invention.

FIG. 2 is a view showing an arrangement example (view AA ′ in FIG. 1) of a plurality of pressure shafts used in the same embodiment.

FIG. 3 is a cross-sectional view showing the configuration of a conventional pressure device.

FIG. 4 is a view showing an arrangement example (view BB ′ in FIG. 3) of pressure pawls used in a conventional pressure device.

[Explanation of symbols]

 1 Optical Element 2 Optical Fiber 3 Optical Element Holder 4 Pressure Adapter 5 Optical Fiber Holder 6 Clamp Jig 7 Pressure Arm 8 Compressor 9 Air Tube 10 Large Air Chamber 11 Small Air Chamber 12 Pressure Shaft 13 Packing 14 Welding Machine 15 Coil Spring 201-203 pressure nail

Claims (5)

[Claims] 1. A pressurizing device for evenly pressing a positioned object from one direction, wherein a plurality of cylindrical members are arranged to face the pressing surface of the object and are formed in the inside in a vertical direction from the facing surface. Of small air chambers and a large air chamber connected to each of the small air chambers, and a convex member slidable in the pressurizing direction so that each of the plurality of small air chambers has a tip protruding from the facing surface. A pressurizing device comprising: a pressurizing arm that is inserted and a compressed air supply unit that sends compressed air to the pressurizing arm. 2. The pressurizing device according to claim 1, wherein the pressurizing arm includes a packing that seals an open end of the small air chamber in a state where the convex member is inserted. 3. The pressurizing device according to claim 1, wherein an elastic member is interposed between the convex member and the packing. 4. The pressurizing device according to claim 1, further comprising holding means for holding a surface of the object opposite to the pressurizing surface. 5. The pressurizing device according to claim 1, wherein the compressed air supply means includes pressure adjusting means for adjusting the pressure of the compressed air.