JPH012814A - Saw plate clamping device for saw plate processing machinery - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a saw plate clamping device used in a saw plate processing machine, and more particularly, to a saw plate clamping device for use in a saw plate processing machine. a first clamp jaw which is supported by the flap and which holds the saw plate in the closed position of the flap.
a second clamp jaw configured to be reciprocally movable between a released position and an engaged position, the second clamp jaw clamping between the second clamp jaw and the second clamp jaw configured to allow the flap to be released in the released position;
The invention relates to a sawboard clamping device having a locking member for holding the hula knob in the closed position in the engaged position and an operating member for moving the locking member.

Known saw plate clamping devices of the type mentioned above (e.g. "Cana S/Cana" published by the applicant, August 1984)
(Please refer to the instruction manual for "SL") is installed in a special automatic machine for grinding cutting saw plates or wide bandsaws, and is designed to be used to rotate a saw around a first horizontal axis. The flap is closed.

This first axis extends parallel to the longitudinal direction of the band saw to be clamped by the device.

The associated locking member is mounted on the machine frame so as to be pivotable about a second horizontal axis extending at right angles to the first axis, such that the jaw member pivots upwardly in the closed position of the flap. When the free end of the locking member is
It is arranged to ride on a rib having a curved shape formed on the flap. In order to swivel the mouth/took member, a handle formed as a spherical grip is attached to its free end. The locking member consists of some leaf springs capable of holding the flap in the closed position with a predetermined force.

The known clamping device of the above configuration requires both hands of the user to operate. That is, when the saw blade is loaded and the flap is swiveled to the closed position, the locking member is swiveled upward so that the free end of the locking member rests on the rib of the flap under bending stress. It is necessary to hold the flap in between with one hand. In addition, to release the saw plate, hold the flap with one hand, while rotating the locking member downward with another hand, and then turn the flap in the f direction with the hand that was originally holding the flap or with both hands. It is meant to be rotated. In this case, it is difficult to avoid the risk of injury unless the movements of both hands are accurately coordinated with each other. For example, if a user bends over and grasps the handle at the free end of the locking member with one hand, but does not properly hold the flap with the other hand, the flap may pivot downward with considerable force and cause the user to The object of the present invention is to enable a user to operate with one hand without any danger when clamping a saw plate to a processing machine used for grinding a cutting plate or a wide band saw. In addition, it is an object of the present invention to propose a lamp device that can be operated by the same simple motion of both hands.

To achieve this object, the invention provides a clamping device of the type described [111], in which the locking member is installed on the flap and is lockable behind a support arranged on the machine frame, and further comprising: The operating member is installed on the flap so as to be able to reciprocate between a rest position and an operating position, and the locking member is locked at the rest position, but the locking member is released when the operating member is moved to the operating position. It is characterized by:

According to the present invention, since both the locking member and the operating member are installed on the flap, the user can grip only the operating member and operate the flap and the locking member alternately. Since this operation usually requires only one hand, the user can use his free hand to initiate the saw blade feeding motion, making sure that the clamping force is neither too high nor too low.

In carrying out the present invention, an inclined surface is formed on the support,
Preferably, the arrangement is such that when the flap is moved to the closed position with the operating member in the rest position, the inclined surface displaces the locking member towards the release position and engages it for the first time behind the support. .

Such an arrangement makes the operation even simpler.

This is because the user can selectively hold the operating member in the rest position or the activated position when moving the flap to the closed position. In other words, it is no longer necessary to move the operating member into the rest position until the flap reaches the closed position and to lock the locking member behind the support with the flap in that rest position.

Advantageously, the locking element and the actuating element are pivotably mounted on the flap by means of a common support pin. This makes it possible to realize a particularly simple transmission path for the actuating force exerted on the actuating element, on the one hand, for pivoting the flap and, on the other hand, for actuating the locking element.

To further simplify the operation, the support pin advantageously extends parallel to the pivot axis of the flap relative to the machine frame.

In an advantageous development of the embodiment described above, the locking element is pivotable on the support pin in a direction opposite to the actuating element, and furthermore:
A rocker element is attached to the flap, and the lock member can be released by rotating the rocker element from an inoperative position to a supporting position by rotating an operating member from a rest position to an operating position.

Advantageously, the actuating element is mounted on a support pin, the support pin being provided with an eccentric part, on which the locking element is mounted. According to this configuration, the function of reciprocating the lock member between the engagement position and the release position by turning the operating member is not limited, and the function of biasing the lock member toward the engagement position is also exhibited. It is.

The locking member can be reliably locked in position of the flap and the operating member by its own weight.

However, it is desirable for the locking member to be spring loaded toward its engaged position.

Finally, it may be desirable to spring load the flap toward the closed position, relieving at least a portion of its weight.

Hereinafter, the present invention will be explained in more detail with reference to illustrated embodiments.

Each figure shows a machine frame IO in a processing machine used for grinding a band saw. The frame IO is provided with struts 12 which support the flap 14 so that it can pivot about the horizontal axis A. The pillar 12 has
Each stopper 16 is provided, and these stoppers 1
6 and a stop 18 fixed to the flap 14 cooperate to limit the range of rotation of the flap 14 from the vertical closed position shown to an open position approximately 60 DEG below it.

The flap 14 is supported by both struts 12 via a torsion coil spring 20 and can be locked in any intermediate position between the closed position and the open position when no external force is applied to the flap.

A first clamp jaw 22 is fixed to the machine frame 10. The second clamp jaw is placed opposite the clamp jaw.
The clamping jaws 24 are displaceably guided on the flap 14 and supported by a piston 26 in a hydraulic cylinder 28 fixed to the flap 14. flap 1
4 is locked in the shown closed position, the saw blade 30 is clamped between the clamping jaws 22, 24 with a force that depends on the pressure of the hydraulic cylinder 28.

At the upper edge of the flap 14 remote from the strut 12 in the closed position, a support pin 34 is arranged between the two pairs of support brackets 32 . Both support pins 34 are rotatable about a common axis B that is parallel to the pivot axis A of the flap. Arms 36 are clamped to the support pins 34 by screws 38, respectively.

The arm 36 has a connecting rod 40 parallel to the axis B.
is fixed, and the operating member 4 is used to pivot and lock the flap 14 by means of the connecting rod 40 and the arm 36.
form 2.

The support pin 34 has an eccentric portion 44 formed between a pair of associated support brackets 32, and the axis C thereof is arranged slightly offset from the axis B. Eccentric part 4
A proximal end 46 of a locking member 48 is disposed on 4 so as to be rotatable from zero. The locking member 48 is provided with a T-shaped head 50 which is spaced an adjustable distance from the proximal end 46 by a threaded portion 52 .

The threaded portion 52 of the lock member 48 is connected to a pair of lock nuts 54.
to lock it in place. Associated with each locking member 48 is a support 56 disposed on the machine frame 10'' which is in the shape of an upwardly open fork and has an inclined surface 58 facing the proximal end 46. Each locking member 48 is biased downwardly toward a stopper 62 fixed to the flap 14 by a tension spring 60 in the illustrated example.

In the vicinity of each of the two support pins 34, a bifurcated rocker element 64 is arranged on the support pin 66, the axis of which extends parallel to the axes A, B and C. A hardened sliding surface 68 is formed at one end of each rocker element 64, and the cam-like projections 70 of adjacent arms 36 on the operating member 42 are disposed in relation to these sliding barrels. At the other end of each rocker element 64 is an associated locking member 48.
A support portion 72 is formed to press and displace the holder upwardly and to hold it in an upper position. The rotation range of the rocker element 64 is
at least one stopper 7 fixed to the flap 14
Limited to 4.

The operating member 42 has a lower rest position shown in FIG.
It can be pivoted up and down between the upper operating position shown in the figure. When the operating member 42 is pivoted upward from the rest position to the activated position, the cam-like projection 70 of the arm 36 slides over the sliding surface 68 of the rocker element 64 and pushes the rocker element down. As a result, the support portion 72 is displaced upwardly, displacing the associated locking member 48 upwardly.

If the locking member 48 was previously locked behind the associated support 56, as shown in FIG. Displace. In the release position of the double-ended grip member 48, the flap 14 is rotated by the operating member 42, the clamp jaw 1-24 is separated from the clamp jaw 22, and the saw plate 30 can be freely moved. It is possible to set another saw board. In this case, the user can increase or decrease the opening angle of the flap 14 as required.

It should be noted that complete movement of the flap 14 to the open position is normally only required when replacing the saw blade 30.

If the flap 14 is to be closed again, it is pivoted upwards by the operating member 42. In this case, it does not matter whether the actuating member 42 occupies the lower rest position or the upper operating position. When the actuating member 42 assumes the rest position, the locking member 48 is spring-loaded until its head 50 rests on the associated ramp 58 and the locking member 48 is lifted above the associated support 56. 60, it is held in close contact with the stopper 62. On the other hand, if the operating member 42 is in the upper operating position when the flap 14 is pivoted upward, the head 50 of the locking member 48 will easily move over the support 56 and the operating member 42 will be in the rest position. Only after pivoting downwards does it come into engagement with the back of the support.

As is clear from the above description, according to the present invention, all required operations in the clamp device can be easily performed with only one hand.

[Brief explanation of the drawing]

FIG. 1 is a front view of a saw plate clamping device according to a 121st embodiment of the present invention, and FIG. 2 is an arrow 1 shown in FIG. Figure 3 is a plan view in the direction of arrow 111 in Figure 1, Figure 4 is an enlarged view of the main parts of Figure 1, and Figure 5 is an enlarged view of the main parts of Figure 2 when the saw plate is in a clamped state. FIG. 6 is a similar enlarged view of the saw blade in its released state. 10... Machine frame, 14... Flap, 20...
...Spring, 22...First clamp jaw, 24...
・Second clamp jaw, 30... saw plate, 34...
- Support pin, 42... Operating member, 44... Eccentric portion, 48... Lock member, 56... Support body, 5
8... Inclined surface, 64... Rocker element, 60...
・Spring. Ibe1. J+ '74. ,'”',”l.・ ′−°几′しノ

Claims (1)

[Claims] 1. A saw plate clamping device used in a saw plate processing machine, which comprises a flap (14) provided on a machine frame (10) so as to be able to reciprocate between an open position and a closed position; A first clamping jaw (22) supported by the frame (10) and a flap (14) supporting the saw plate (30) with the first clamping jaw (22) in the closed position of the flap (14). A second clamp jaw (24) is arranged to be reciprocatable between a released position and an engaged position, allowing release of the flap (14) in the released position and clamping the flap (14) in the engaged position. ) in a closed position, and an operating member (42) for operating the locking member (48), the locking member (48) being provided on the flap (14); and,
It can be locked behind a support (56) arranged on the machine frame (10), and the operating member (42) is provided on the flap (14) so as to be able to reciprocate between a rest position and an operating position, and in its rest position. A saw plate clamping device characterized in that the locking member (48) is locked but released when the operating member (42) is moved to the operating position. 2. In the device described in item 1, the support body (56) is provided with an inclined surface (58), and the operating member (42) is in the rest position.
When the flap (14) is moved to the closed position using A saw board clamping device characterized by: 3. The device according to item 1 or 2, characterized in that the locking member (48) and the operating member (42) are pivotally attached to the flap (14) using a common support pin (34). Saw plate clamping device. 4. In the device described in item 3, the support pin (34) is
A saw plate clamping device, characterized in that it extends parallel to the pivot axis (A) of the flap (14) relative to the machine frame (10). 5. In the device according to item 3 or 4, the lock member (48) is placed on the support pin (34) by the operating member (42).
), the flap (14) is provided with a rocker element (64), and the rocker element (64) can be moved from the inoperative position to the support position by rotating the operating member (42) from the rest position to the activated position. Lock member (4)
8) A saw plate clamping device characterized by being arranged to release. 6. In the device according to any one of items 3 to 5, the operating member (42) is mounted on the support pin (34),
A saw board clamping device characterized in that a support pin (34) is provided with an eccentric portion (44), and a locking member is installed on the eccentric portion (44). 7. The saw plate clamping device according to any one of items 1 to 6, characterized in that the locking member (48) is biased toward the engagement position by a spring (60). 8. The device according to any one of clauses 1 to 7, in which the flap (14) is biased by a spring (20) towards its closed position to relieve at least part of its weight. A saw board clamping device characterized by: