Tsubakimoto Chain Company

Keyence Corporation

Keisuke Murakami

Tomoyuki Saji

Motohiro Kudo

Akiji Yamaguchi

Kiyoshi Hama

Toshio Okada

Provided is an interlocking chain unit configured such that chains reliably and firmly engage with each other and that the buckling and twisting of a rigidified chain portion are avoided. An interlocking chain unit is configured such that the outer edges of a plate overlap region (P) are defined by contact portion faces and flat buckling restricting end faces, and that the plate overlap region (P) is constructed from the outlines of two plate overlap portions (Pa, Pa) which are point-point-symmetric about the point (C) of intersection between hook-shaped interlocking end faces and the buckling restricting end faces.

Engagement chain unit

An interlocking chain type forward and backward actuating device is provided that does not increase workload involved in assembling the device, adjusting the rotation phase, and servicing and maintaining the device. The device is capable of smoothly actuating a driven body by advancing and retracting the body, and of preventing any pulsation or the like of the meshing chain. The interlocking chain type forward and backward actuating device includes chain-guide grooves formed so as to equalize an interlocked-state pin-to-pin distance (D) between a pair of connecting pins that face each other in a chain interlocking imaginary plane (S) and a rigid-state pin-to-pin distance (D) between a pair of connecting pins.

Advancing/retracting actuation device with meshing chain

Provided is an interlocking chain unit that has reliable and strong interlocking and avoids buckling, breaking, and bending of a rigidified chain portion. In the interlocking chain unit (), the interlocking operation of an outer tooth link plate (BZ) and an outer tooth link plate (AY) that are just about to complete the interlocking operation is completed in a manner that causes a first inter-pin distance (d) and a second inter-pin distance (d) become substantially equal to each other, and causes a third inter-pin distance (d) to approach the second inter-pin distance (d).

Provided is an interlocking chain forward and backward actuating device type device, the device being configured so that the space within the device is effectively utilized and that a device configuration most suitable for driving interlocking chains is selected to enable the interlocking chains to be smoothly driven. An interlocking chain type forward and backward actuating device () is configured in such a manner that a pair of flat face-shaped chain support faces (AS,AS) which sandwich and support a rigid chain portion (G) from both sides thereof each form a portion of each of the guide groove faces () of chain guide grooves () while being continuously connected to each of a pair of curved guide faces (BS,BS) which respectively guide disengaged portions (H,H) of a pair of interlocking chains (), the disengaged portions (H,H) having been disengaged from each other.

Engagement chain type device for forward and backward movement operation

A multi-optical-axis photoswitch incorporating a light emitting unit and a light receiving unit between which a multiplicity of optical axes exist. In the multi-optical-axis photoswitch, the ratio of the number of optical axes in which the quantity of received light exceeds a predetermined threshold value with respect to the number of all of optical axes is displayed by a plurality of display lamps disposed concentrically, in particular, by a bar graph. Thus, the operation can be indicated such that movement must be performed in a direction in which the value of the bar graph is increased.

Method for displaying state of multi-optical-axis photoswitch and multi-optical-axis photoswitch adapted to the method

An area sensor including a light emitter having a plurality of light emitting devices that emit rays of light and a light receiver having light receiving devices that respectively correspond to the light emitting devices for receiving the rays of light therefrom. In the area sensor, the light emitting device and/or the light receiving device that provides at least one of the optical axes formed by sets of the light emitting devices and the corresponding light receiving devices is adapted to have narrower angular characteristics than the light emitting devices and/or the light receiving devices that provide the other optical axes.

Area sensor with optical axis having narrow angular characteristics

The structure is constituted by light-emission control means,and,, a plurality of light emitting devices,which are sequentially operated and controlled in response to light-emission-timing signals supplied from the light-emission control means,and,, a plurality of light receiving devices,forming pairs with the plural light emitting devices,so as to receive light emitted from the corresponding light emitting devices, light-receipt control means,and,for enabling light-receipt signals supplied from the plural light receiving devices,to be received in synchronization with light-emission-timing signals, voltage detection means,for detecting operation voltages which are supplied to the plural light emitting devices,and an abnormal state detection means,for detecting an abnormal operations of the plural light emitting devices in accordance with the operation voltages detected by the voltage detection means

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Osaka, Japan

Keisuke Murakami