JPH0357441Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a steering control device for a material conveying belt for a woodworking machine. By using a special structure in which the steering roll is pressed into contact with the material conveying belt, there is no need to use the conventional supporting frame.

(Prior Art) In woodworking machines, it is common to use a material conveying belt that is driven by a motor and is associated with a processing mechanism. However, several sets of processing mechanisms are connected in series,
Woodworking machines that use a single feed belt to feed workpieces and perform continuous rough cutting, finish cutting, and final polishing using a processing mechanism must use long endless feed belts. In many cases, the center of movement of the material conveying belt is shifted to one side, causing it to come off the traveling guide roll or breakage, and this also occurs when only one set of processing mechanisms is used instead of multiple processing mechanisms. For this purpose, it is necessary to install a steering control device on the belt. Tokuko Showa 51-43638
An example of this is shown in Japanese Patent Application No. 58-125507, and these known devices are capable of swinging a support frame that pivotally supports a steering roll that is in a tangential relationship with the material conveying belt. When a detection device detects a certain degree of deviation of the material conveying belt, the supporting frame is swung in the steering correction direction based on the detection signal, and the axis of the steering roller is tilted to correct it. Therefore, it was not possible to correct only the axis of the steering roll using the rod of the steering correction device based on the above-mentioned detection signal. For this reason, the steering roll had to be pivotally supported on a swingable support frame.

(Problems to be solved by the invention) As mentioned above, in the conventional structure in which the steering roll is supported by a swingable supporting frame, it is difficult to install the supporting frame in a place where it cannot be used. become unable. The present invention makes this possible, with a special configuration in which the rocking motion required for steering is borne by a non-rotatable horizontal rocking shaft, and the passing of the material conveying belt is borne by a steering roll that cannot swing by itself. The purpose of this invention is to solve the above-mentioned problems.

(Means for Solving the Problems) The present invention has been made to meet the above-mentioned purpose, and includes a material feeding belt 6 that is passed around the rolls 4 and 5 at the front and back of the frame 3 and is run against the processing mechanism of a woodworking machine. A horizontal swing shaft 9 is provided, one end of which is horizontally swingably supported by a bearing 8, and the other end mounted on a swing guide 12 so as to be horizontally swingable and non-rotatable;
A steering roll 14 is rotatably fitted to the swing shaft, and the steering roll 14 is pressed against the running part of the material conveying belt on the opposite side to the running part corresponding to the processed material, and the steering roll 14 is pressed against the running part of the material conveying belt 6 on the side opposite to the traveling part corresponding to the processed material. A detection device for detecting deviation from the center of travel, a correction device 19 such as a cylinder that moves the rod 20 in the correction direction based on a detection signal from the detection device, and a correction device 19 such as a cylinder that is attached to the rod that moves in the vertical direction to steer the ring groove 22. An interlocking member 21 is provided that is substantially parallel to the take-up roll 14, and the interlocking member 21 is connected to the correction arm 15 that is passed through the horizontal swing shaft 9 and engaged
A steering device for a material conveying belt for a woodworking machine is characterized in that an engaging piece 18 that fits into an annular groove is provided. By selectively using a rotatable steering roll that is rotatably supported on a shaft, it is possible to provide a configuration that allows the steering device to be installed in a place where a support frame cannot be used.

(Example) An embodiment of the present invention will be described.

Figure 1 shows the processing mechanism 2, which consists of three types of wide sanders for rough cutting, finishing cutting, and polishing.
A woodworking machine 1 is shown in which a driven roll 4 and a driving roll 5 are mounted on the front and rear of a frame 3, and a material conveying belt 6 that runs in correspondence with the processing mechanism 2 is hung on both rolls 4 and 5. hand over.

Inside the frame 3, there is a steering roll 1 which contacts the inside of both rolls 4 and 5 with respect to the running part 6a of the material conveying belt 6 on the opposite side to the running part with respect to the processing mechanism 2.
4 and 14 are provided. As shown in FIGS. 2 to 5, particularly in FIG.
supports the spherical part 10 at one end in a swingable manner,
It is fitted to a non-rotatable horizontal swinging shaft 9 that is substantially perpendicular to the traveling direction of the material conveying belt 6 through a bearing (not shown), and is fitted to the other end of the horizontal swinging shaft 9. Fit the rotatable ring 11,
The ring 11 is horizontally swingably supported on the upper surface of a substantially horizontal swing guide 12 attached to the frame 3.

The end face of the steering roll 14 and the ring 1 are attached to the swing shaft 9.
1 (FIG. 5).
The shape of the arm 15 is as shown in FIG. 6, and an arm portion 17 is formed that extends downward from a mounting portion 16 that fits into the axially bottomed elongated hole 13 provided in the horizontal swing shaft 9. An engagement piece 18 having both sides formed in a spherical cross section is provided on the arm part 17 so as to protrude in the direction of the shaft support piece 7. This correction arm 15 is fixed to the horizontal swing shaft 9 by a set screw 13a passed through the bottomed elongated hole 13.

Reference numeral 19 denotes a correction device consisting of a cylinder (or solenoid, etc.) attached to the frame at the lower side of the horizontal swing shaft 9, with a piston inside and a rod 20 protruding in the front-rear direction. Ring groove 2 into which the engagement piece 18 of the correction arm 15 is fitted
Attach the reel piece 21 provided with 2 as an engaging part,
A stopper 23 that defines the movement range L of the rod 20 is fitted into the protrusion at the other end and fixed with a screw 23a.

Reference numeral 24 denotes a detection device for detecting the movement of the material conveying belt 6 off the center of travel, and since such a detection device is known, any known detection device 24 may be installed. The one shown uses one eccentrically operated detection roll 25 that contacts one edge of the material conveying belt 6 due to the elasticity of the spring, and when the material conveying belt 6 shifts to one side to a certain extent, The first limit switch is actuated to give a drive command to the correction device 19 to correct the deviation to the other side, and when the correction is made and the material conveying belt 6 is shifted to the other side by a certain limit, the second limit switch is activated. It operates to give a drive command to the correction device 19 to correct the deviation to one side.

In addition, 26 is a detachment prevention device for the material conveying belt that is freely removably attached to the frame 3, but unless there is a failure in the detection device 24 and the correction device 19, the steering roll 14 and the driven roll 4 of the material conveying belt 6, Since it does not come off the drive roll 5, it serves as a kind of safety device.

In the embodiment described above, the steering roll 14 is brought into contact with one side of the running section 6a of the material conveying belt 6, but as shown in another embodiment in FIG. A presser roll 42 may be provided between the steering roll 6a and the steering roll 14. In that case, a support piece 31 attached to the frame 3 is provided at the upper part of the steering roll 14, and a spherical bearing 33, which is the same as the spherical bearing 8 in FIG. Apply spring 35 to 32 and hold it down.
An L-shaped bracket 38 is attached to the other end of the presser shaft 36 which has a spherical portion 37 at one end horizontally swingably supported by a spherical bearing 33, and a correction arm 15 of the swing shaft 9 is attached.
The fixing piece 39 is fitted with the mounting portion 40 adjacent to the fixing piece 39 and is fixed with the presser screw 13b passed through the bottom elongated hole 13.
A bracket 38 is fitted onto a support rod 40 which is erected from the ground and held down by a spring 41, and a presser roll 42 rotatably fitted onto a presser shaft 36 via a bearing is elastically contacted with the inner surface of the running part 6a.

To explain the operation of the embodiment shown in FIGS. 1 to 6, when the material conveying belt 6 shifts its running center to either side, the detection device 24 detects the shifting of the running section 6a.
When the deviation reaches a certain limit, either the first or second limit switch of the detection device 24 is activated and commands the correction device 19 to drive in the direction of correcting the deviation. . Therefore, the rod 20, which is a movable part, moves together with the reel piece 21 within the movement range L, and the engagement piece 18 moves into the annular groove 22.
The correction arm 15 engaged with the horizontal swing axis 9
is oscillated back and forth in the horizontal direction about the center of the spherical bearing 8, and the ring 11 is moved in an oscillating manner on the oscillating guide 12. Therefore, the horizontal swing shaft 9 rolls on the sliding guide 12 together with the ring 11 to swing the steering roll 14 in a horizontal plane, thereby automatically correcting the deviation of the running portion 6a of the material conveying belt 6.

When replacing the material conveying belt 6, the belt 6
is removed in the direction indicated by the arrow in FIG.

(Operations and Effects) The present invention has the configuration and operation as exemplified above, and the steering roll 14 is brought into contact with the running portion 6a on the reverse side of the processing mechanism 2 of the material conveying belt 6, and the material conveying belt 6 is shifted to one side. is detected by the detection device 24 and corrected by the correction device 1.
9 to issue a command signal for driving in the direction of correcting the offset, the steering roll 14 is oscillated about a shaft bearing that supports one end of the steering roll 14, and supports the steering roll 14 freely in rotation. Since the horizontal swing shaft is non-rotatable with one end supported swingably by the aforementioned bearing and the other end resting on the horizontal swing guide surface 12, the above correction device of the correction arm 15 which does not rotate. The movable part 19 can be engaged with a correction engagement piece 18 provided on the movable part 19, and the engagement piece 18 can quickly and easily correct the deviation. Furthermore, since the steering roll 14 is in pressure contact with one side of the material conveying belt 6, it is easy to remove and replace the steering roll of the material conveying belt in the axial direction, which needs to be replaced every 3 to 12 months. It facilitates the automatic maintenance of the running center of the material feed belt of woodworking machines, and in particular allows the processing of processed materials on large woodworking machines to be controlled without causing damage to the material feed belt, and eliminates the use of conventional support frames. has the benefit of eliminating the need for

[Brief explanation of the drawing]

Figures 1 to 6 show one embodiment of the present invention. Figure 1 is a side view of a woodworking machine equipped with the present invention, Figure 2 is a plan view of only the frame, Figure 3 is a side view of the same, and Figure 4 is a side view of a woodworking machine equipped with the present invention. The figure is an enlarged plan view of the steering roll 14 on the left side of FIG. 3 and its vicinity, with a portion cut away. 5 is an enlarged front view taken along the line AA in FIG. 3, and FIG. 6 is a perspective view of the correction arm 15. FIG. 7 is a front view of another embodiment similar to FIG. 5. DESCRIPTION OF SYMBOLS 1... Woodworking machine, 2... Processing mechanism, 3... Frame, 6... Material feeding belt, 6a... Running part, 7...
Shaft support piece, 8... Bearing, 9... Horizontal swing axis, 14...
... Steering roll, 15 ... Correction arm, 18 ... Engagement piece, 19 ... Correction device, 24 ... Detection device.

Claims (1)

[Claims for Utility Model Registration] In a device that is provided with a material feeding belt that is passed around rolls at the front and rear of the frame and run against the processing mechanism of a woodworking machine, one end is supported so as to be horizontally swingable, and the other end is swingable. A horizontal swinging shaft mounted on the guide so that it can freely swing horizontally but cannot rotate is provided, and a steering roll is fitted to the swinging shaft so that it can rotate freely, and is opposite to the running section of the material conveying belt that corresponds to the processed material. The steering roll is pressed against the side running section, and the material conveying belt is provided with a detection device for detecting deviation from the center of travel and a rod that is driven in a direction to correct the deviation based on a detection signal from the detection device. It is characterized by comprising a correction device such as a cylinder provided, an interlocking member is attached to the rod, and an engagement piece that fits into the ring groove of the interlocking member is provided on the correction arm engaged with the horizontal swing shaft. Steering device for material conveying belts for woodworking machines.