JPH1168387A - Tray suction head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray suction head capable of securely sucking and transferring an empty tray. SOLUTION: The tray suction head 1 transferring an empty tray 4 after finishing supply of an electronic component to an electronic component packaging machine comprises a suction nozzle section 2 with a back end of its breakthrough connected to a vacuum generation device and a pad section 3 surrounding a periphery of the breakthrough at the end of the suction nozzle section 2. The pad section 3 comprises a sponge layer 5 locally having deformational elasticity and an elastic layer 6 of the tray suction face laminated to a surface of the sponge layer 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a tray suction head for transporting an empty tray after supplying electronic components to an electronic component mounting machine.

[0002]

2. Description of the Related Art FIG. 4 is a schematic side view of a conventional tray suction head of this type. The tray suction head 101 includes a suction nozzle section 102 formed of a hollow shaft, and a butt section 103 forming a tray suction surface. The suction nozzle unit 102 has a vacuum generator connected to one end, and a butt 103 fixed to the other end. here,
The butt portion 103 is made of a hard elastic body. FIG. 2 shows a state in which the empty tray 104 is being sucked by the butt portion 103. When holding the empty tray 104 by suction, the tray suction head 101 is lowered and the suction surface of the butt portion 103 is pressed against the surface of the empty tray 104. Then, the butt portion 103 is in close contact with the surface of the empty tray 104 as shown in the figure, and hermetically seals the periphery of the suction surface. Next, the vacuum pressure is increased by the operation of the vacuum generator, and the suction force generated thereby causes the surface of the empty tray 104 to be sucked on the suction surface of the butt portion 103. Here the butt part 1
03 is made of an elastic body, so it prevents air leakage,
By maintaining the vacuum pressure at a predetermined value, the empty tray 104
Is securely held by suction. Then, when the empty tray 104 is transferred to the tray disposal place, the operation of the vacuum generating device is stopped, and the evacuating of the butt 103
Is separated from the surface of the empty tray 104.

[0003]

However, the elastic body constituting the butt portion 103 of the conventional tray suction head 101 as described above is generally made of a rubber-based material. When the warp is large or when the parallelism between the butt 103 and the empty tray 104 is poor,
Air leakage occurs. Therefore, the empty tray 104 cannot be sucked and transported. For this reason, there has been a problem that the electronic components on the lower tray cannot be supplied to the suction head for supplying components, and the electronic component mounting machine stops. Therefore, an object of the present invention is to provide a tray suction head that can surely suck and transport an empty tray.

[0004]

According to a first aspect of the present invention, there is provided a tray suction head for conveying an empty tray after supplying electronic components to an electronic component mounting machine. An end portion has a suction nozzle portion connected to a vacuum generator, and a butt portion surrounding a periphery of the through hole at a tip end side of the suction nozzle portion, wherein the butt portion is a sponge layer that can be locally elastically deformed. And an elastic layer that is attached to the surface of the sponge layer and serves as a tray suction surface. According to a second aspect of the present invention, in the tray suction head of the first aspect, a surface treatment for preventing air leakage is performed on surfaces of the sponge layer and the elastic layer. .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A tray suction head according to the present invention has a suction nozzle portion having a rear end side of a through-hole connected to a vacuum generator, and a butt portion surrounding the through-hole at the front end side of the suction nozzle portion. have. The butt portion is characterized by comprising a sponge layer that can be locally elastically deformed, and an elastic layer that is attached to the surface of the sponge layer and serves as a tray suction surface. In the present invention, by employing such an embodiment, the sponge layer is elastically deformed according to the shape of the tray. Therefore, for example, even if the tray has a large warp or the degree of parallelism between the suction surface and the tray is low, air leakage is prevented, and the tray is sucked securely.
Can be transported. In addition, according to the present invention, the surface of the sponge layer and the elastic body layer are subjected to a surface treatment for preventing air leakage, so that the attraction force can be secured.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view of a tray suction head according to an embodiment of the present invention, FIG. 2 is a schematic side view showing a suction state of the tray suction head according to the embodiment when the empty tray is largely warped, and FIG. FIG. 4 is a schematic side view showing a suction state of a tray suction head according to the embodiment when the parallelism between the tray and the tray is poor. In FIG. 1, the tray suction head 1 includes a suction nozzle portion 2 formed of a hollow shaft and a butt portion 3 forming a tray suction surface. One end of the suction nozzle 2 is connected to a vacuum generator, and the butt 3 is fixed to the other end. Here, the butt portion 3 has an intake hole opened at the center of the suction surface. The butt portion 3 is composed of a soft sponge layer 5 that can be locally elastically deformed, and an elastic layer 6 that is fixed by being attached to the sponge layer 5. The surface of the sponge layer 5 and the surface of the elastic layer 6 are subjected to a surface treatment for preventing air leakage. This ensures the attraction force. FIG. 3 shows a state in which the empty tray 4 is being sucked by the butt portion 3. Although not shown, the trays storing the electronic components are usually directly stacked, and the electronic components stored in the uppermost tray are supplied to the electronic component mounter. Then, the empty tray 4 located at the uppermost stage after supplying the electronic components is moved to the tray suction head 1.
Conveyed by.

Hereinafter, the suction operation of the tray suction head according to this embodiment will be described. When holding the empty tray 4 by suction, the tray suction head 1 is lowered and the suction surface of the butt portion 3 is pressed against the surface of the empty tray 4. At this time,
The sponge layer 5 is compressed and deformed by the pressing force. However, the part of the sponge layer 5 where the amount of compressive deformation is large is the part that comes into contact with the empty tray 4 first, and the compressive deformation of the sponge layer 3 at the part corresponding to the empty tray 4 that is away from the suction surface due to warpage or parallelism. The amount will be insignificant. As a result, when the empty tray 4 is warped, FIG.
The elastic layer 6 bonded to the surface of the sponge layer 5 is deformed along the warp of the empty tray 4 as shown in FIG. 4 and adheres to the surface of the empty tray 4 as shown in FIG. Seal hermetically. On the other hand, when the parallelism between the suction surface and the empty tray 4 is poor, the elastic layer 6 is deformed to correct the parallelism as shown in FIG.
And tightly seal the periphery of the suction surface. Then, the vacuum pressure is increased by the operation of the vacuum generating device, and the suction force generated thereby causes the surface of the empty tray 4 to be sucked on the suction surface of the butt portion 3. By maintaining the vacuum pressure at a predetermined value, the empty tray 4 is securely held by suction. And when this empty tray 4 is transferred to the tray disposal place,
When the operation of the vacuum generator is stopped and the evacuation is released, the suction surface of the butt portion 3 is separated from the surface of the empty tray 4.

As described above, according to this embodiment, when the empty tray 4 is sucked, the vacuum suction force generated by the operation of the vacuum generator is applied to the empty tray 4 through the through-hole of the suction nozzle portion 3 and the bat portion 3 having two layers. When the sponge layer 5 acts on the empty tray 4, the sponge layer 5 is elastically deformed in accordance with the warp or inclination of the empty tray 4. Therefore, the butt portion 3 can be brought into close contact with the surface of the empty tray 4 and air leakage can be prevented.
Can be surely held by suction, and the transport operation can be made more reliable. Therefore, the electronic components in the lower tray can be supplied to the component supply suction head without stopping the electronic component mounter, and the productivity of the electronic component mounter can be improved.

[0009]

As described above, according to the present invention, the sponge layer is elastically deformed according to the shape of the tray. Therefore, for example, even when the tray is greatly warped or when the parallelism between the suction surface and the tray is poor, air leakage can be prevented, and the tray can be reliably sucked and transported.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a tray suction head according to an embodiment of the present invention.

FIG. 2 is a schematic side view showing a suction state of a tray suction head according to the embodiment when an empty tray has a large warp;

FIG. 3 is a schematic side view showing a suction state of a tray suction head according to the embodiment when the parallelism between the butt portion and the tray is poor.

FIG. 4 is a schematic side view of a conventional tray suction head.

[Explanation of symbols]

 Reference Signs List 1 tray suction head 2 suction nozzle section 3 butt section 4 empty tray 5 sponge layer 6 elastic layer

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuhiko Naruseki 1006 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A suction head for feeding an empty tray after supplying an electronic component to an electronic component mounting machine, wherein a suction nozzle portion having a rear end side of a through hole connected to a vacuum generating device; A butt portion surrounding the periphery of the through-hole at a tip end side of the portion, the butt portion being locally elastically deformable, and a sponge layer being elastically bonded to a surface of the sponge layer to form a tray suction surface. A tray suction head comprising a body layer. 2. The tray suction head according to claim 1, wherein surfaces of the sponge layer and the elastic layer are subjected to a surface treatment for preventing air leakage.