Copy detection device

Abstract

To provide a copying detection device which can constitute the copying detection device at a low cost and a high durability and facilitate maintenance.SOLUTION: This copying detection device for detecting a displacement of a copying contact tool, comprises: a core bar in a vertical direction; a cylindrical body into which the core bar is interpolated; a frame body, which supports the core bar and the cylindrical body to be movable relatively along a longitudinal direction; support pins, which connect the core bar to be capable of oscillating in a longitudinal direction with respect to the cylindrical body; a mount plate mounted on the top of the frame body; a mount base mounted on the top cylindrical body to be arranged on the top face side of the mount plate; a left displacement detection sensor, which detects a displacement in a left direction of the copying contact tool via the oscillation of the core bar and a right displacement detection sensor; a vertical displacement detection sensor, which detects, via vertical movement of the cylindrical body, vertical displacements mounted on the mount plate to detect vertical displacements of the copying contact tool; and an adjustment mechanism mounted on the mount base to adjust so that the core bar may be almost concentric with the cylindrical body.SELECTED DRAWING: Figure 3

Claims

1. A tracing detection device having a tracing contact that can contact any part parallel to the weld line, and detecting the vertical and horizontal displacement of the tracing contact perpendicular to the extending direction of the weld line, A vertically oriented core rod to which the aforementioned tracing contact is attached at the lower end, A cylindrical body is positioned around the aforementioned core rod, with a gap between it and the core rod. A frame is arranged around the cylindrical body and supports the core rod and the cylindrical body so that they can move relative to each other along the longitudinal direction of the core rod and the cylindrical body. A support pin is provided at the lower side of the core rod, connecting the core rod and the cylindrical body, so that the core rod can swing in the left-right direction relative to the cylindrical body. A mounting plate attached to the upper part of the frame, A mounting base is attached to the upper part of the cylindrical body and positioned on the upper surface side of the aforementioned mounting plate, One or more leftward displacement detection sensors, which are attached to the mounting base and detect the leftward displacement of the tracing contact via the oscillation of the core rod, One or more rightward displacement detection sensors, which are attached to the mounting base and detect the rightward displacement of the tracing contact via the oscillation of the core rod, One or more vertical displacement detection sensors are attached to the mounting plate and detect the vertical displacement of the tracing contact via the vertical movement of the cylindrical body. The system includes an adjustment mechanism attached to the mounting base, which presses the core rod from both the left and right sides to adjust it so that the core rod is substantially concentric with the cylindrical body, Copy detection device.

2. The adjustment mechanism consists of a pair of biasing devices provided in a pair of mounting holes formed in the mounting base. The biasing device comprises a spherical contact member that contacts the core rod, a biasing member that biases the contact member toward the core rod, an adjusting body that adjusts the biasing force of the biasing member, and a cylindrical member that houses these together. The tracing detection device according to claim 1.

3. The left displacement detection sensor and the right displacement detection sensor are arranged so that their respective sensor terminals face each other. The tracing detection device according to claim 1.

4. The left displacement detection sensor, the right displacement detection sensor, and the vertical displacement detection sensor are housed in a box-shaped cover body positioned on the upper surface of the frame. The wiring connected to each of the aforementioned detection sensors was routed together from the top surface of the cover body. The tracing detection device according to claim 1.

5. The inner surface of the cover body is insulated, The tracing detection device according to claim 4.

6. A swinging plate is attached to the upper end of the core rod, protruding upward from the cylindrical body and extending from the outer surface of the cylindrical body in the direction in which the support pin extends. The pair of vertical displacement detection sensors, one on the left and one on the right, are arranged so as to sandwich the cylindrical body. The left displacement detection sensor and the right displacement detection sensor are positioned on different sides in the left-right direction with respect to the rocking plate, and on different sides in the extending direction of the support pin with respect to the pair of vertical displacement detection sensors. A tracing detection device according to any one of claims 1 to 5.

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