JPS631617A - Conveyor - Google Patents

Abstract

PURPOSE:To change a conveyor speed with a simple structure, by installing a lever projectingly in a turning shaft of a pulley, and also installing a one-way clutch, which converts and transmits rotation of an output shaft as reciprocatory rotation of the lever and transmits rotation of only one direction of the lever to the turning shaft, between the lever and a motor output shaft. CONSTITUTION:A lever 18 is installed in a conveyor pulley shaft 5 via a one- way clutch 28, and a guide rail 19 is installed in the upper part. An arm 21 is projectingly installed on top of an output shaft 20a of a motor 20, and a shaft 22 is attached adjustably for position with any of plural through holes 21a of the arm 21, while a pin 23, being slidable at the inside of the guide rail 19, is attached to this shaft 22. Therefore, rotation of the output shaft 20a is converted and transmitted to the lever 18 as reciprocatory rotation. This reciprocatory rotation of the lever 18 comes to only one direction rotation of the pulley shaft 5 by the clutch 28, whereby a conveyor is driven as repeating driving and stopping. The driving speed is made adjustable by only adjustment of these through holes 21a, thus speed regulation is performable with a simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a conveyor such as a chip conveyor for transporting chips such as cutting waste to a predetermined position.

(Prior art) Conventionally, for example, in a chip conveyor, a sprocket was provided on the output shaft of the motor and the support shaft of the belt, and a chain was hung between the two sprockets so that the conveyor belt was rotated by the rotation of the motor. I was doing it.

(Problem to be Solved by the Invention) However, in the conventional chip controller 7, in order to reliably transmit the rotation of the motor by the chain, the motor must be installed by moving the chain up and down once. It is necessary to adjust the tension. Furthermore, in order to keep the conveyor's rotation speed at the required speed, it is necessary to attach a reducer to the motor,
Alternatively, it requires the intervention of gears, which poses a problem in that the conveyor drive mechanism becomes complicated.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a lever protruding from one of the rotating shafts, and a lever between the lever and the output shaft of the drive motor. A motion conversion mechanism is provided that converts and transmits the rotation of the output shaft to the lever as reciprocating rotation, and a one-way clutch is provided between the lever and the rotating shaft for transmitting the rotation of the lever in only one direction to the rotating shaft. We have adopted a configuration in which

(Function) Therefore, in the conveyor of the present invention, the rotation of the output shaft of the drive motor is converted and transmitted to the lever as reciprocating rotation by the motion conversion mechanism that does not use a chain, and the one-way clutch allows the rotation of the lever to be rotated in only one direction. The rotation is transmitted to the rotating shaft, and the conveyor belt rotates while repeatedly moving and stopping intermittently.

For this reason, unlike conventional conveyors, in order to reliably transmit the rotation of the motor to the rotating shaft, the motor must be installed by adjusting its position up or down to adjust the tension of the chain, or by adjusting the rotation speed of the conveyor. In order to achieve this speed, there is no need for a reduction gear, gears, etc.

(Example) Hereinafter, an example in which the present invention is embodied in a chip conveyor will be described in detail based on FIGS. 1 to 5.

As shown in FIG. 1, the conveyor frame 1 has a horizontal part 2 equipped with an upwardly open chute inlet 2a for inserting chips, and an end portion that is connected to the horizontal part 2 and stands up obliquely. and a slanted part 4 having an opening 3 for discharging chips.

A rotating shaft 5 is supported between both side walls 4a at the upper end of the slanted portion 4, and a pair of left and right drive sprockets 6 are attached to both ends of the rotating shaft 5. On the other hand, a rotating shaft 7 is supported between both side walls 2b at the front end of the horizontal portion 2, and a pair of left and right driven sprockets 8 are attached to both ends of the rotating shaft 7. Between the two sprockets 8, an endless conveyor belt (not shown) is wound around chains 9 on both sides of the conveyor belt, and scrapers are placed at equal intervals on the upper surface of the conveyor belt. 10 are erected.

Further, guide rails 12 for guiding the chain 9 are provided on both inner walls of the conveyor frame 1, so that
The conveyor belt is formed by a horizontal part corresponding to the horizontal part 2 of the conveyor frame 1 and a diagonal part corresponding to the diagonal part 4.

As shown in FIGS. 1 and 2, both side walls 4 at the upper end of the slanted portion 4
A guide plate 14 is obliquely attached to the outside a, and long holes 15 are obliquely formed through the guide plate 14 and the both side walls 4a. Furthermore, bearings 16 that support both ends of the rotating shaft 5 outside the conveyor frame 1 are slidably mounted on the guide portions 14a provided on both the upper and lower sides of the guide plates 14, and these bearings 16 can be adjusted in position along the elongated hole 15 with a bolt 17.

A lever 18 is protruded from one end of the rotating shaft 5, and a guide rail 19 is provided inside the upper part of the lever 18. Further, a drive motor 20 is disposed on the upper end surface of the conveyor frame 1, and an arm 21 is protruded from an output shaft 2Oa of the drive motor 20. A shaft 22 is attached to the arm 21 so that its position can be adjusted through one of a plurality of (four in this embodiment) through holes 21a provided in the arm 21, and
A pin 23 is rotatably attached to the shaft 22 and is slidable in the longitudinal direction inside the guide rail 19. In this way, the rotation of the output shaft 20a is controlled by the lever 1 by the guide rail 19, arm 21, shaft 22, and pin 23.
A motion transmission mechanism for converting and transmitting reciprocating rotation is constructed in 8, and is covered by a cover 31.

As shown in FIG. 4.5, the proximal end 18 of the lever 18
A socket 24 with a ratchet 24a provided on the outer and inner periphery is rotatably assembled in the socket 24.
A hexagonal portion 5a provided at the end of the rotating shaft 5 is engaged and connected to the inner side of the rotary shaft 5. In addition, a through hole 18 provided in the base end portion 18a
A pin 25 is slidably attached to b, and the pin 25
A pair of recesses 25a are provided on the upper surface, into which a ball 27 pressed by a spring 26 provided in the base end 18a can engage. As shown in FIG. 5, when the ball 27 is engaged in the one recess 25a, the bottle 2
5 engages with the ratchet 24a of the socket 24, and relative rotation between the rotary shaft 5 and the lever 18 via the socket 24 is permitted only in the direction of the arrow X.

Similarly, when the ball 27 is engaged with the other recess 25a, relative rotation between the rotation shaft 5 and the lever 18 is allowed only in the direction opposite to the arrow X. In this way, the proximal end 18a of the lever 18, the socket 24 and its ratchet 24a,
The lever 18 is moved by the pin 25, spring 26, ball 27, etc.
The rotation in only one direction is transmitted to the rotating shaft 5, and the coupling and
A one-way clutch 28 is configured as a ratchet mechanism that can reverse the direction of disengagement.

Therefore, as shown in FIG. 3, when the output shaft 20a is rotated based on the operation of the drive motor 20, the lever 18 is reciprocated left and right. At this time, due to the action of the one-way clutch 28, the rotating shaft 5 is not rotated when the lever 18 is rotated to the left in FIG. 3, but is rotated in the same direction only when it is rotated to the right in the same figure. Rotated. As a result, lever 18
The rotation in only one direction is reliably transmitted to the rotating shaft 5, and the conveyor belt is reliably rotated while repeatedly moving and stopping intermittently. Therefore, unlike conventional conveyors, the drive motor 20 must be installed at a certain position in order to reliably transmit the rotation of the motor to the rotating shaft even if the position is displaced vertically or horizontally. There is no need to adjust the tension of the chain by adjusting it up or down.

In addition, in order to change the rotation speed of the conveyor belt in the chip conveyor of this embodiment, the pin 23 in the arm 21 is replaced with another through hole 21a, the position of the pin 23 is changed, and the lever A simple operation of changing the swing width of 18 is sufficient. Therefore, unlike conventional conveyors, there is no need to provide the motor with a complicated reduction gear, gears, etc. in advance.

Furthermore, since the conveyor belt rotates while repeatedly moving and stopping intermittently, for example, if a large lump of cutting waste is dropped onto the conveyor belt, the intermittent circulating movement will remove the lump of cutting waste. It becomes possible to break it down. Therefore, during the conveyance of the cutting waste, the lumps will not be caught between the conveyor belt and the conveyor frame 1, and the cutting waste will be conveyed smoothly.

Note that the present invention is not limited to the above-mentioned embodiments. For example, as shown in FIG. Long hole 30a provided in the longitudinal direction
The pin 29a is made slidable within the disk 29.
The lever 30 may be configured to rotate reciprocally based on the rotation of the lever 18, or the one-way clutch 28 may be provided with a torque limiter to avoid an excessive load on the lever 18, as shown in FIG. , output shaft 2 of drive motor 2°
A cam 32 is attached to the cam 32, and a cam follower 34, which is normally engaged with the cam 32 by a spring 33, is provided to protrude from the rotating shaft 5 via a one-way clutch 28.
The cam follower 34 may be configured to rotate reciprocatingly based on the rotation of the cam follower 2, for example, and may be implemented as appropriate without departing from the spirit of the invention.

Effects of the Invention As detailed above, the present invention has the excellent effect of simplifying the structure of the conveyor drive mechanism.

[Brief explanation of the drawing]

1 to 5 show an embodiment embodying the present invention, FIG. 1 is a partially cutaway front view of a chip conveyor, FIG. 2 is a perspective view showing the main parts, and FIG. 3 shows the operation. Front view, Figure 4 is a side sectional view showing the one-way clutch, Figure 5 is Y in Figure 4.
-Y line sectional view. FIG. 6 is a front view showing the operation of another example, and FIG. 7 is a front view showing another example soon. 5.7... Rotating shaft, 18... Lever, 19... Guide rail, 20... Drive morph, 20a... Output shaft, 21... 7-m, 23... Bin, 24...Socket, 25...Pin, 26...Spring, 27...
Paul, 28...one-way clutch.

Claims (1)

[Claims] 1. A conveyor belt suspended between a pair of parallel rotating shafts (5) and (7) so as to be able to rotate; and a conveyor belt connected to one of the rotating shafts (5) for rotating the conveyor belt. A drive motor (2) rotates a rotating shaft (5) to
0), the one rotating shaft (
5) with a lever (18) protruding from the lever (18) and the output shaft (20a) of the drive motor (20).
A motion conversion mechanism is provided between the lever (18) and the rotating shaft (5) to convert and transmit the rotation of the output shaft (20a) to the lever (18) as reciprocating rotation.
) is provided with a one-way clutch (28) for transmitting the rotation in only one direction to the rotating shaft (5). 2. The conveyor belt according to claim 1, wherein the conveyor belt includes a horizontal portion onto which chips such as cutting waste are dropped, and a diagonal portion that stands up obliquely and connects to the horizontal portion and drops and discharges the chips from the upper end. . 3 The motion transmission mechanism is connected to the output shaft (20) of the drive motor (20).
3. A conveyor as claimed in claim 1 or 2, characterized in that it is an eccentric pin (23) provided at a) and slidably engaged in the longitudinal direction of the lever (18). 4. The conveyor according to any one of claims 1 to 3, wherein the one-way clutch (28) is a ratchet mechanism. 5. The conveyor according to claim 4, wherein the ratchet mechanism is capable of reversing the connection/dissociation direction. 6. The conveyor according to claim 1, wherein the distance between the eccentric pin (23) and the output shaft (20a) is adjustable.