KR900009381Y1 - Chuck device for jig saw - Google Patents

Abstract

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Description

Chuck Device for Jig Saw

1 is a state of use of the present invention.

Figure 2 (a) is a cutaway view of the main part of the present invention, (b) is a cutaway view showing the main operating state of the present invention.

3 is an exploded view of the present invention.

4 is another main incision of the present invention.

* Explanation of symbols for main parts of the drawings

1: lower chuck 2: hydraulic cylinder

3: shaft 4: crank

5: eccentric rod 6: tapered plunger

7, 7 ': sliding 8, 8': encounter

9, 9 ': compression plate 10: leaf spring

11: Joe's Edition 12: Guide

13: guide groove 14: through hole

15: long groove 16: upper chuck

17: motion 18: spring

19: hydraulic cylinder 20: saw blade

21: Workbench 22: Guide

23 casing

The present invention relates to a chuck device for jig saw (Sigma) is designed to facilitate the fastening of the saw blade.

Conventionally, a chuck mounted on a shaft of a jig saw has been used to fasten a saw blade by a screw. This is because the chuck is located under the workbench, and when replacing the saw blade is tightened by using a wrench, etc. from the bottom of the workbench, so that it is difficult to adjust and fasten, so that the work efficiency is reduced.

The present invention has been devised to solve such drawbacks and will be described in detail with reference to the drawings.

An eccentric rod 5 is installed on the crank 4 for allowing the saw blade 20 to reciprocate, and the cylinder 2 automatically operated by a solenoid valve on the upper portion of the shaft 3 reciprocating in conjunction with the eccentric rod. The chuck device consisting of a lower chuck 1 integrated with the lower surface chuck 1, and a work bench 21 is installed on the upper chuck 1 and the upper chuck 16 is integrally mounted on the work platform 21. The guide rod 22 is installed to be vertically operated by the hydraulic cylinder 19 by releasing the movement section 17 enclosed by the guide 22 to the guide 22.

The lower chuck device mounts an inlet cylinder 2 having a truncated conical tapered plunger 6 to the shaft 3 and allows the tapered plunger 6 to be introduced into the bottom of the casing 23 of the lower chuck 1. The lower chuck 1 is screwed onto the upper portion of the cylinder 2.

The lower chuck 1 has a sliding ring 7 which is interlocked with one side of the tapered portion of the tapered plunger 6 by pivoting on one side thereof, and has a compression piece 9 having a jaw 8 formed at the other end of the lower chuck 1. Eccentric pivoting in the casing 23 through the long groove 16 perforated inwardly into the casing 23 from the side, the leaf spring 10 is mounted in the long groove 15 to compress the pressing piece 9 and encounter The guide plate 11 in which the jaw plate 11 is installed to face the 8 and the guide hole 13 formed with the guide hole 13 connected to the through hole 14 is formed by drilling a normal through hole 14 having the saw blade 20 instrumented thereon. In another embodiment of FIG. 4, a tapered plunger is formed by drilling holes 15 and 15 'which are introduced into the casing 23 so as to face each other on the side of the lower chuck 1. Sliding rings (7) (7 ') interlocked with the taper of (6) are pivotally laid, and each of the crimp pieces (9) (9') forming jaws (8) (8 ') is flawed (15) (15). Inserted into the casing (23) On the lower cylinder 2, the chuck 1, which has been pivoted up and down, and the plate springs 10, 10 ', which are pressed against each of the flaws 15, 15', is pressed down. It is installed.

When explaining the effect of the present invention made as follows.

Place the plate to be cut on the workbench 21, fasten the saw blade to the upper chuck 16, align the holes prepared in the plate with the saw blade, and turn on the switch (not shown) connected to the solenoid valve (not shown). When the upper hydraulic cylinder is operated so that the guide 22 comes down and the saw blade 20 fastened to the upper chuck 16 is also the guide 12 of the lower chuck 1 located below the work table 21 through the hole of the plate. In accordance with the through hole 14 is located within the gap between the jaw plate 11 and the jaws (8) maintained by the suppression of the leaf spring 10 of the lower chuck (1).

Then, when the solenoid valve (not shown) connected to the cylinder 2 of the lower chuck 1 is operated, the tapered plunger 6 of the cylinder 2 is moved upward and shot by the leaf spring 10. The pressing piece 9 and the sliding ring 7 are pushed in the direction of the arrow to narrow the interval where the jaws 8 are held by the pressure of the leaf spring 10 so that the saw blade 20 encounters the jaws plate 11. It will be crimped between (8).

When the main switch is operated after completing the work preparation as described above, the crank 4 rotates to be interlocked with the rod 5, the shaft 3 reciprocates, and the lower chuck 1 mounted on the shaft 3 is saw blade. Since the blade 20 is squeezed, the saw blade 20 reciprocates up and down, and at this time, the movement section 17 on which the upper chuck 16 is mounted is subjected to the downward movement force by the saw blade 20 during the downward movement. Since the spring 18 suppressed by the movement 17 is inflated and tensioned, the saw blade 20 is always pulled upwards, and therefore, when the saw blade is moved upward by the crank, the force of the expansion tensioned spring between the movements is directed upward. The saw blade does not come unreasonable, high speed operation is possible without disturbing the vertical movement of the saw blade, and the shape of the saw blade is made of a jigsaw, it is good to cut the plate freely while moving in a curve.

The present invention can reduce the time required for the operator to place the workpiece on the workbench and replace the saw blade. Since the saw blade is always squeezed with a constant force, there is no problem that the saw blade is loosened by the vibration of the machine. Therefore, it is a useful design that can increase work efficiency.

Claims (2)

Jig for curved cutting the plate by the saw blade 20 fastened to the lower chuck 1 of the shaft 3 reciprocating by the eccentric rod 5 eccentrically fixed to the crank (4) for rotational movement (Jig) In the saw, a hydraulic cylinder 2 having a truncated conical tapered plunger 6 is mounted on a normal shaft 3, and a sliding ring 7 linked to the tape plunger 6 is rotated on one side. A plate for eccentrically pivoting the compressed piece 9 in which the tapered plunger 6 is introduced into the casing 23 through which the tapered plunger 6 is introduced through the long groove 5. A spring (10) is mounted in the long groove (15), is fitted to the jaw plate 11 to face the jaw (8), the conventional through hole (14) in which the saw blade (20) is instrumented on the upper surface of the lower chuck (1) The chuck device for jigsaw, characterized in that the lower chuck (1) on which the guide (12) having the perforated and guide grooves (13) connected to the through hole (14) are mounted is mounted on the upper end of the hydraulic cylinder (2). 2. The eccentric rotation of the casing 23 through the long groove 15 is arranged so that the two pressing pieces 9, 9 ′ interlocked with the tapered plunger 6 are opposed to each other. (10) (10 ') is a jigsaw chuck device characterized in that the pressing piece (9) (9') is pressed down in each long groove (15, 15 ').