| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a problem of a head structure 4 that width of a support member 4a for supporting a head 3 must be changed in response to the number of head, a problem that the structure of the head structure 4 is complicated while requiring a vertical cylinder 6 vertically moving in a head 3 except a servo motor 5 for vertically moving the support base 4a for supporting the head 3 of the head structure 4 for positioning, and to lower the cost. SOLUTION: A servo motor 12 is installed in a fitting member 11 installed in an upper part of a support member main body 10, and a screw shaft 13 connected to a rotary shaft of the servo motor 12 is suspended from the servo motor 12 at the center of the support member main body 10. A coupling 14 to be interlocked with the head is engaged with the screw shaft 13 by a screw, and a vertical rail 15 to be engaged with a bearing of the head is vertically installed in a front surface of the support member main body 10, and furthermore, a bearing to be interlocked with the rail of a cross beam is installed.
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