JPH07223202A - Stand-type transport machine - Google Patents

Abstract

PURPOSE:To simplify the structure, miniaturize the machine and lighten the machine hence can stand a high load. CONSTITUTION:A stand-type transport machine is equipped with a lifting device which consists of a pillar 6 with a circular cross-section fixed upright to a work deposition table 1 for receiving a work and adjusts the vertical movement of a bracket 10 projecting in a radial direction along the pillar 6, with which the bracket 10 is engaged, and a clamping device for clamping and fixing the bracket 10 to the pillar 6. In addition, an arm 20 which protrudes in the radial direction is engaged with the pillar 6 in a freely rotatable manner, and a feed roll 27 which rotates around a shaft center positioned in parallel with the shaft center of the pillar 6 is provided on the top part of the arm 20. Further, a motor 25 for driving the feed roll 27 is installed on the arm 20, and a rotating device 30 which rotates the arm 20 centered around the pillar 6 is provided between the bracket 10 and the arm 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention stands upright on a surface plate of a cutting machine such as a band saw or a circular saw, and transfers a workpiece such as wood or plastic placed on the surface plate to the saw. The present invention relates to a stand type carrier.

[0002]

2. Description of the Related Art Conventionally, a supporting column is erected and fixed on a work mounting table on which a work is mounted, and a supporting arm is laterally protruded and fixed to an upper end of the supporting column, and a tip of the supporting arm is fixed. Is provided with a rotating arm that is rotated by a rotating cylinder about an upper and lower axis, and a motor is supported at the rotating end of the rotating arm downward and vertically by a lifting cylinder. Attach the feed roll to the rotating shaft of. Then, the feed roll is rotated in a predetermined direction by the motor, and then the arm is rotated in the work direction by the rotating cylinder to press the feed roll against the work, and the work placed on the work placement table is predetermined by the feed roll. I was supposed to transfer in the direction.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned conventional apparatus, the turning arm is turnable at the projecting end of the supporting arm projecting laterally from the column, and the feed roll is vertically moved at the turning end of the turning arm. Since it is movably mounted, there is a drawback that the number of parts increases, the structure becomes complicated and the size becomes large, and the machine to be mounted is limited due to an increase in mounting space and weight. Further, since the swing center of the rotating arm is deviated from the axis of the supporting column, when mounting the supporting column on the work mounting table, the supporting column should be positioned on the work mounting table in consideration of the swing center of the rotating arm. Since it has to be attached, there is a drawback that it is troublesome to attach the support column to the work placing table. It is an object of the present invention to obtain a novel stand type transporter that solves the above drawbacks.

[0004]

The present invention is configured as follows in order to achieve the above object. That is, a pillar having a circular cross section is erected and fixed on a work mounting table on which a work is placed, a bracket protruding in a radial direction is fitted to the pillar, and an elevating tool for vertically adjusting the bracket along the pillar and the bracket are attached. A feed roll that is provided with a tightening tool that is fastened and fixed to a pillar, rotatably fits an arm projecting in a radial direction to the pillar, and rotates at the tip of the arm around an axis parallel to the axis of the pillar. Along with
A motor for driving the feed roll is provided on the arm, and a rotating tool for rotating the arm around the support column is provided between the bracket and the arm. In this case, it is preferable that a motor that rotates about an axis parallel to the axis of the support is provided at the tip of the arm, and the feed roll is directly connected to the rotation shaft of the motor. Further, it is preferable that the rotating tool is a cylinder having one end locked to the bracket and the other end locked to the arm. The rotating tool may be an elastic body having one end locked to the bracket and the other end locked to the arm.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a partial cross-sectional side view showing an embodiment of the present invention, FIG. 2 is a partial cross-sectional plan view of FIG. 1, and FIG. 1 to 3, reference numeral 1 is a surface plate of a band saw cutting machine, that is, a work mounting table, which supports a work W made of square or plate-shaped wood. 2 and 3, 2 is a ruler for positioning and guiding the work W placed on the work mounting table 1.
Is a band-shaped saw that cuts the work W placed on the work placing table 1.

Reference numeral 5 is a carrier attached to the work mounting table 1, and 6 is its support. The pillar 6 is fitted and fixed to a support cylinder 7 integrally provided with a mounting flange 8 at a lower end portion of a cylindrical body obtained by cutting a metal pipe material to a predetermined length, and the mounting flange 8 is fixed to a predetermined position of the work mounting table 1. Fix it upright by tightening bolts.

The bracket 10 is supported on the column 6 by protruding in the radial direction. This bracket 10 integrally has a cylindrical boss portion 11 which is circumferentially divided by a slit in a base portion, and the boss portion 11 is fitted to a column 6, and the divided portion is tightened with a bolt 12 to be fixed to the column 6. To do. The bracket 10 is vertically moved and adjusted by an elevating tool 14. The lifting tool 14 has a cap 17 fitted and fixed to the upper end of the support 6 and a boss 11 on which a support projection 18 and an engagement projection 13 projecting in the opposite direction of the bracket 10 are formed, and an elongated screw rod 15 is provided. The rod 6 is arranged in parallel with the column 6, the upper end of which is rotatably and vertically immovably locked to the support protrusion 18, the lower end of which is screw-fitted to the engaging protrusion 13 and the rod-shaped rod 15 is attached to the upper end of the screw rod 15. A handle 16 is attached.

When the bracket 10 is moved up and down by the elevating tool 14, the bolt 12 is loosened so that the boss 11 is loosely fitted to the support column 6, and in this state the handle 1
The screw rod 15 is rotated in a predetermined direction via 6 to move and adjust the bracket 10 in the vertical direction along the column 6.

Further, the arm 20 is rotatably supported on the column 6 by protruding in the radial direction. That is, the cylindrical bearing 21 having a mounting plate 22 extending in the tangential direction is vertically and adjacently adjoined to the boss portion 11 and rotatably and vertically movably fitted to the support column 6 to fix the base portion of the elongated plate-shaped arm 20. It branches up and down, and this branching portion 20a is fastened to the mounting plate 22 of the bearing 21 with a bolt 23.

A motor (geared motor) 25 is attached to the front end of the arm 20. The motor 25 has its rotating shaft 26 oriented in the vertical direction parallel to the axis of the support column 6 and protrudes vertically from the motor case. As shown in FIG. 3, the feed roll 27 is attached to each of the upper and lower rotating shafts 26. Install. The roll 27 is formed by fitting and fixing a rubber ring having a large frictional force on the outer peripheral portion.

A cylinder 30 serving as a turning tool is attached between the bracket 10 and the arm 20 described above. As shown in FIG. 2, the cylinder 30 is arranged on the back side of the arm 20, and the base (left end) of the case 31 is rotatably connected to the bracket 10 by a vertical pin 33. The tip (right end) is rotatably connected to the tip of the arm 20 by a vertical pin 34, and is expanded and contracted by compressed air to rotate the arm 20 about the column 6.

FIG. 4 shows another embodiment. In FIG.
6 is a support column standing and fixed to the work mounting table 1, 10 is a support column 6
The bracket 20 fitted and fixed to the armature 20, the arm 20 rotatably fitted and supported on the column 6, and the feed roll 27 attached to the tip of the arm 20 have substantially the same structure as those described above. . In FIG. 4, 35 is a bracket 1
0 is a coil spring that is an elastic body interposed between the arm 20 and the arm 20, and the repulsive force of the coil spring 35 causes the arm 20 to rotate about the support column 6 toward the work W within a range of about 30 degrees. Let

The pressing force of the work W by the feed roll 27 attached to the tip of the arm 20 (approximately the spring 35
It is replaced by a rotational moment exerted on the arm 20 about the column 6 by the repulsive force. ) Is arm 2
It is preferable to make the arm 20 substantially uniform from the initial rotation of 0 to the maximum rotation of the arm 20. In order to achieve this, it is necessary to set the spring constant K of the coil spring 35 to a predetermined value. Here, M1; rotational pressing moment against the work W during initial rotation of the arm 20 F1; repulsive force of the coil spring 35 during initial rotation of the arm 20 (point P1) R1; during initial rotation of the arm 20 Distance between the axis of the coil spring 35 and the axis of the column 6 at (P1 point) X1; Length of the coil spring 35 at initial rotation of the arm 20 (Point P1) M2; At maximum rotation of the arm 20 Rotational pressing moment on the work W F2; Repulsive force of the coil spring 35 when the arm 20 rotates maximum (P2 point) R2; Shaft center and pole of the coil spring 35 when arm 20 rotates maximum (P2 point) When the length of the coil spring 35 at the time of maximum rotation of the arm 20 (point P2) is X2, the spring constant K of the coil spring 35 is calculated by the following mathematical expression.

[0014]

Since M1 = F1 × R1 M2 = F2 × R2, the equation for obtaining the spring constant K with M1 = M2 = F1 × R1 = F2 × R2 is K (X1-X2) = F2-F1 = ( R1 ÷ R2-1) ×
F1 and the spring constant K is K = {F1 × (R1-R2)} ÷ {R2 × (X1-X
2)}.

Therefore, by using the coil spring 35 satisfying the spring constant K, the pressing force of the work W by the feed roll 27 becomes substantially constant regardless of the change of the thickness of the work W, and the feeding performance is stabilized. It will be. In addition,
The feed roll 27 and the motor 25 shown in FIG. 4 are obtained by attaching the feed roll 27 to the front side of the arm 20 and the motor 25 to the back side of the arm 20, and connecting both by a pulley 28 and a chain 29. In FIG. 4, FIG.
1 to 3 have substantially the same structure, description thereof will be omitted.

Since the present invention is configured as described above, when the motor 25 is started to rotate the feed roll 27 in the direction of the arrow (A) and the cylinder 30 is extended, the arm 20 moves around the support column 6 as a center. The work roll W rotates in two directions, and the feed roll 27 presses the work W placed on the work placement table 1 in the direction of the ruler 2 and transfers it in the direction of arrow (a). The work W transferred in the direction of the arrow (a) is cut into a predetermined width by a saw (band saw) 3. In addition, in FIG. 4, the arm 20 is supported by the support rod 6 by the repulsive force of the coil spring 35.
Is rotated in the direction of the ruler 2 and the feed roll 27 presses the work W in the direction of the ruler 2 in the same manner as described above, and transfers the work W in the direction of arrow (a).

When the bolt 12 is loosened and the screw rod 15 is rotated in a predetermined direction via the handle 16, the bracket 10 moves vertically along the support column 6, and the bearing 21 of the arm 20 accordingly moves. The feed roll 27 is moved in the vertical direction along the column 6, and the feed roll 27 is moved and adjusted in the vertical direction with respect to the work mounting table 1 via the arm 20.

[0018]

As described above, according to the present invention, the arm for supporting the feed roll and the motor for driving the feed roll is provided directly on the column so that the arm can be moved up and down and rotated. Elevate to a position biased toward
Since it is not necessary to provide a rotating mechanism, the structure is simplified, the size and weight can be reduced, and the arm can be firmly supported by the column, so that a high load can be endured. Further, since the swing center of the arm coincides with the axis of the strut, the mounting position of the strut becomes the swing center position of the arm. There is an effect that can be quickly and accurately installed. Moreover, since the feed roll is directly connected to the motor attached to the tip of the arm, the structure is further simplified.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view showing an embodiment of the present invention.

2 is a partial cross-sectional plan view of FIG.

FIG. 3 is a front view of a main part as seen from the direction A in FIG.

FIG. 4 is a partial cross-sectional plan view showing another embodiment according to the present invention.

[Explanation of Codes] 1 Work Placement Table 2 Ruler 3 Saw 5 Conveyor 6 Support 7 Support Cylinder 8 Mounting Flange 10 Bracket 11 Boss 12 Bolt 13 Engagement Protrusion 14 Elevator 15 Screw Rod 16 Handle 17 Cap 18 Support Protrusion 20 Arm 20a Branch part 21 Bearing 22 Mounting plate 23 Bolt 25 Motor 26 Rotating shaft 27 Feed roll 28 Pulley 29 Chain 30 Cylinder (rotating tool) 31 Case 32 Rod 33 pin 34 pin 35 Pin Coil 35 (elastic body)

Claims (4)

[Claims] 1. An elevating tool for vertically fixing a pillar having a circular cross section on a work mounting table on which a work is placed, fitting a bracket projecting in the radial direction to the pillar, and vertically adjusting the bracket along the pillar. And a tightening tool for tightening and fixing the bracket to the support, an arm protruding in the radial direction is rotatably fitted to the support, and the tip of the arm is centered on an axis parallel to the axis of the support. A stand comprising a rotating feed roll, an arm provided with a motor for driving the feed roll, and a rotating tool provided between the bracket and the arm for rotating the arm around a column. Form carrier. 2. The motor according to claim 1, wherein a motor which rotates about an axis parallel to the axis of the column is provided at the tip of the arm, and a feed roll is directly connected to the rotary shaft of the motor. Stand type carrier. 3. The stand type transporter according to claim 1, wherein the rotating tool is a cylinder having one end locked to the bracket and the other end locked to the arm. 4. The stand type carrier according to claim 1, wherein the rotating tool is made of an elastic body having one end locked to the bracket and the other end locked to the arm.