JPS59118423A - Chuck device for taking out spool in resin-molding machine - Google Patents

Abstract

PURPOSE:To securely drop a spool to a predetermined part, by a method wherein the shape of a chuck surface is made to be substantially the same as that of a part to be chucked of a spool, and a hollow shaft is oscillated in such a direction that an opening part of chuck elements is located on the lower side when releasing the spool. CONSTITUTION:The hollow shaft 2 is fixed to an upper part 1a of a main body 1 of the chuck U-shaped in cross section and having a lower part 1b constituting a one-side chuck element as a fixed chuck element 41, a movable chuck element 42 tapered to conform to the taper of the spool S is connected directly to a driving shaft 3 penetrating through the shaft 2, and the spool S is chucked in the axial direction thereof. When discharging the spool S, the shaft 2 is oscillated, the movable chuck element 42 is moved upward to open the chuck elements 4, and the spool S is released to drop under its own weight. Accordingly, it can be contrived to enhance efficiency in transmitting a driving pressure and to enlarge chuck contact area, and it is enabled to securely prevent the spool from being mischucked or misdropped in a continuous automatic operation of the resin- molding machine.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a chuck device for taking out a spool (or product) during automatic continuous operation of a resin molding machine.

(Structure of conventional example and its problems) Fig. 1 shows a conventional chuck device for taking out a spool. 3 is inserted, and the opening/closing operation of the chuck jaws 4 is controlled by the drive shaft 3.
This is done using A as a fulcrum by the meshing of the rack 3a machined at the tip of the rack 3a and the gear 4a machined on the chuck claw 4.

Then, as shown in FIG. 2(a), the 1 drive shaft is operated to close the chuck claws 4 and chuck the spool sl.
By swinging the hollow shaft 2, the chuck body J
The spool is taken out by moving the spool to the position shown in the figure, opening the chuck claws 4 to release the spool S, and letting it fall under its own weight.

However, the conventional chuck device for taking out the spool described above has the following drawbacks.

(1) Since the chuck jaws are operated via gears, the driving pressure from the drive shaft is reduced at the meshing portion of the gears.

(2) As shown in Figure 2 (b), the chuck jaws are structured to chuck the tapered spool from a direction perpendicular to its axis, and the chuck surfaces of the chuck jaws are parallel to each other. Since the chuck contact surface is narrow, it may slip when pulling out the spool.

(3) When the spool is released, the chuck claw obstructs the direction in which the spool falls under its own weight, so the spool cannot be dropped to a certain location.

(Objective of the Invention) The present invention has been made in order to solve the drawbacks of the above-mentioned conventional chuck device for taking out a spool. It is an object of the present invention to provide a chuck device for taking out a spool, which improves drive pressure transmission efficiency and expands the contact surface of the chuck, and also allows the spool to fall reliably to a fixed location.

(Structure of the Invention) In order to achieve the above object, the present invention includes a chuck claw extending through a fixed claw formed of a horizontal portion of a chuck body and an upper part of the chuck body. (qx It consists of a movable claw connected to the tip of the moving shaft and facing parallel to the above-mentioned fixed claw, and the shape of the chuck surface is made almost the same as the shape of the spool lock part, so that when the spool is released, The chuck device is configured such that the υF1 opening of the chuck claw swings the hollow shaft in the downward direction KfJ:.

(Description of Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 3 to 5. The chuck body 1 has a U-shaped cross section,
The lower part 1b constitutes one chuck claw as the fixed claw 41. On the other side, the movable claw 4□, which is a claw claw 'xtflt, is tapered to match the taper of the spool S, as shown, and passes through the upper part 1a of the chuck body 1. It is directly connected to the drive shaft 3. The chuck claw of the present invention has the fixed claw 41 on the main body side in this way.
and a movable claw 42 connected to the drive shaft 3, and is configured to chuck the spool sl in its axial direction. When releasing the spool, the hollow shaft 2 is swung as shown in Fig. 5, and the opening 42 is moved upward to open the chuck claw 4, thereby releasing the spool S and letting it fall under its own weight. It is released at a predetermined location.

(Effects of the Invention) As is clear from the above embodiments, the present invention is a horizontal chuck in which the chuck jaws have the same inclination as the taper of the Suffol. Moreover, since the opening of the chuck claw faces downward when the spool is released, the spool can be reliably discharged. Therefore, it is possible to reliably prevent spool chuck errors and spool drop errors during continuous or automatic operation of the resin molding machine.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of a conventional example, FIG. 3 is an external perspective view of a chuck in a spool take-out machine showing an embodiment of the present invention, and FIG. 4(a) is an A-A in FIG. 3. Cross-sectional view, Figure 4 (
b) is a sectional view taken along the line B-B in FIG. 3, and FIG. 5 is a diagram showing the state when the spool is released in FIG. 3. chuck body; 2 hollow shaft; 3; drive shaft;
2. Chuck movable jaw. Fig. 3 m-ゝ Fig. 4 +01 (bl Fig. 5

Claims (2)

[Claims] (1) A swingable hollow shaft, a pair of chucks provided at the tip of the hollow shaft for chucking the spool, and a chuck body having a chuck jaw, and a drive inserted into the hollow shaft to open and close the chuck jaws. In a chuck device for taking out a spool in a resin molding machine, the chuck device is provided with a shaft and is configured to swing the hollow shaft at a predetermined angle from a position where the spool is chucked to release the chunked spool and release it by falling under its own weight. The chuck is composed of a fixed claw formed from a horizontal part of the chuck body, and a movable claw connected to the tip of the drive shaft extending through the upper part of the chuck body and facing parallel to the fixed claw. The resin is characterized in that the shape of the chamfer and the spool surface are substantially the same as the shape of the spool chuck part, and the hollow shaft is swung in a direction in which the opening of the chuck claw is downward when the spool is released. A chuck device for taking out the spool in a molding machine. (2) A chuck device for taking out a spool in a resin molding machine as set forth in claim (1), wherein the chuck claw is a trap so as to chuck the spool in the length direction of the spool.