JP2545532B2 - Conveyor equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a conveyor device that conveys a transfer object placed on a conveyance body by reciprocating the conveyance body.

[Problems to be Solved by Prior Art and Invention] For example, in a production line or the like, a conveyor device is often used as one of means for transferring a transfer product from one process to the next process. .

This conveyor device is always movable to convey the transferred product carried out from the previous process, while the transferred product is temporarily stopped on the conveyor device in order to adjust the speed of manufacturing or assembly between each process. There is something to keep. If a belt is used for the conveyor of the conveyor device, the belt is worn and the belt needs to be replaced within a relatively short period of time.

Therefore, in recent years, for example, a conveyor device using a friction roller as disclosed in Japanese Utility Model Laid-Open No. 59-50910 is often used. In this prior art, a large number of rollers each having a conical friction surface at one end are arranged between two frames arranged in parallel at a constant interval, and are parallel to the frame. A friction body that engages with the friction surface is arranged on the drive shaft disposed in the, and by rotating the drive shaft, the transfer object placed on the roller is conveyed, and the transfer object stops. When the friction is applied, the friction surface and the friction body slide.

However, according to this prior art, due to the structure of the roller conveyor, it is not possible to convey a conveyed product shorter than the interval between the rollers, and it is possible to convey only a conveyed product having a flat bottom. In addition, when it is necessary to bend the transport path for the transported items,
It is necessary to dispose a plurality of these conveyors and dispose and connect another corner conveyor between these conveyors, or to use a flexible shaft or the like for the drive shaft of the friction roller, which complicates the device. It is large and difficult to install in a narrow space.

If the transported material is relatively lightweight, for example,
As disclosed in JP-A-59-33820, the transfer body placed on the transfer body is sequentially transferred by the transfer apparatus being vibrated by a vibrating device connected to the transfer body. Sometimes, a vibrating conveyor is used.

However, according to this prior art, since the carrier is constantly vibrated by the vibrating device, noise generation becomes a problem, fatigue easily occurs, and it is difficult to ensure durability. If you need to bend it is difficult to use.

[Object of the Invention] The present invention has been made in view of the above-described circumstances, and noise, fatigue, and durability can be ensured, and further, the structure is simple and can be installed regardless of whether the installation location is wide or narrow. It is an object of the present invention to provide a conveyor device that is capable of bending and can bend the transport path.

[Means for Solving Problems] A conveyor device according to the present invention conveys a moving object placed on the moving plate in a horizontal direction by a plurality of moving plates that are flexibly connected in a conveying direction by a connecting member. A carrier is formed, and the carrier is reciprocally installed along a guide portion provided on the support, and the carrier is moved to the support in the backward movement faster than in the forward movement. An actuator is provided.

[Operation] With this configuration, when the bendable transport body is gently moved forward by the actuator in the horizontal direction, the transfer object placed on the transport body is moved, while the transport body is moved more than the forward movement. By rapidly returning in the horizontal direction, it is stopped at a certain position due to the inertia of the transfer object, and the transfer object is sequentially transferred in the forward direction by repeating the reciprocating motion of the transfer body.

Embodiments of the Invention Embodiments of a conveyor device according to the present invention will be described below with reference to the drawings.

1 to 4 relate to a first embodiment of the present invention.
The figure is a cross-sectional plan view of the conveyor system, and Fig. 2 is II- in Fig. 1.
II arrow view, FIG. 3 (a) is a side sectional view of the starting end portion of the conveyor device, FIG. 3 (b) is a side sectional view of the end portion of the conveyor device, and FIG. FIG. 4 (b) is an operation state explanatory diagram when the transport body is moved back.

In these drawings, reference numeral 1 is a conveyor body, and a start end portion 1a and an end portion 1b formed at both ends of the conveyor body 1
Is a machine tool 2 that processes the gear 4, which is an example of a transfer unit,
It has been inserted in the 3rd magnitude respectively. The extension lines of the machine tools 2 and 3 intersect with each other, the conveyor device is bent and arranged on the intersecting extension lines, and the gear 4 is transferred from the machine tool 2 to the conveyor. It is supplied to the starting end 1a of the main body 1 and is terminated by this conveyor main body 1.
It is conveyed to 1b, and is supplied to many machine tools 3 from this terminal part 1b.

The conveyor main body 1 is provided with curved supports 6 facing each other, and a guide plate 1c is fixed to the upper surface of each of the supports 6 via a fixing member 1d. The spacer 1e is engaged with the upper part of the opposed surface of the spacer. A portion surrounded by the spacer 1e and the guide plate 1c is a transport path 11 for the gear 4.

A guide portion 6a is formed at each of the opposed portions of the support body 6, and a plurality of moving plates 7 are slidably engaged along the guide portion 6a. The opposite sides of each of the plurality of guide plates 7 are formed in the same shape as the adjacent sides, and in particular, the opposite sides of the moving plate 7 arranged at the bent portion of the conveyor body 1 are opposite to each other. It is formed in a curved shape, and it is said that the bent portions can slide without varying the distance of each moving plate 7.

A clamper 8 is fixed to the lower surface of each of the moving plates 7, and when a wire 9 is engaged with the clamper and one of the plurality of moving plates 7 slides, the clamper 8 does not move. Along with this, the other moving plate 7 is slid.
The clamper 8 and the wire 9 form a connecting member 5, and the plurality of moving plates 7 connected by the connecting member 5 form a carrier 10.

The end of the wire 9 is engaged with a tension spring 12 which is an example of an elastic body and is fixed to the end of the conveyor body 1, and the carrier 10 is always attached to the end 1b through the wire 9. It is energized. The starting end of the wire 9 is engaged with a rod 13a of an air cylinder 13, which is an example of an actuator arranged at the starting end of the guide plate 1c, and the carrier 10 moves as the rod 13a retreats. It is adapted to be slid toward the starting end 1a of the conveyor body 1.

An air passage 14 is communicated with the projecting port 13b and the retreating port 13c of the air cylinder 13, and the air passage 14 receives the air having a predetermined pressure through the directional control valve 16 at the 4 port 2 position. It communicates with the stored air source 17. The directional control valve 16 includes a solenoid 16a and an elastic body 1.
6b is connected and the solenoid 16a is not operated, the directional control valve 16 causes the air of the air source 17 to move backward by the urging force of the elastic body 16b.
It is configured to deliver to 13c.

A flow control valve 18 is provided in the air passage 14 between the air cylinder 13 and the direction control valve 16, and the flow control valve 18 is provided.
By setting 18, it is possible to adjust the acceleration of the protrusion and retreat of the rod 13a, and the reciprocal movement of the carrier 10 causes the gravitational acceleration to be g, and the gear 4 and the moving plate 7 to move.
And the coefficient of friction between the moving plate 7 and the forward acceleration is α ₁ ,
When the backward acceleration and alpha _{2, <is} moved forward in μg, α _2> α ₁ as backward in [mu] g, it is set by the flow control valve 18.

Further, the solenoid 16a is connected to a power source 21 via a timer device 19 and then grounded. By setting the timer device 19, it is possible to set the cycle and stroke of the protrusion and retraction of the rod 13a. Has been done.

Next, the operation of the conveyor device having the above-described structure will be described.

When the timer device 19 is activated, the solenoid 16a is energized, the direction control valve 16 is switched against the biasing force of the elastic body 16b, and the air of the air source 17 flows into the projecting port 13b of the air cylinder 13. To be done. Then, the transport body 10 in which the plurality of moving plates 7 are coupled by the coupling member 5 is urged by the elastic body 12, while the rod 13a of the air cylinder 13 projects and the retreat port regulated by the flow control valve 18 It is moved forward along the guide portion 6a in the direction of the terminal end portion 1b by the acceleration obtained by controlling the discharge of air from 13c.

Next, the solenoid 16a is de-energized by the timer device 19, the directional control valve 16 is switched by the elastic body 16b, and the air of the air source 17 flows into the retreat port 13c of the air cylinder 13. Then, the forward movement of the carrier 10 is stopped, and then the rod 13a is retracted against the urging force of the tension spring 12, whereby the backward movement of the carrier 10 is started. The cycle of is repeated.

Since the moving plate 7 of the carrier 10 arranged on the bent portion of the conveyor main body 1 is formed to have a bent shape in which the opposite sides are the same as the adjacent sides, the carrier 10 is bent at this bent portion. It is possible to reciprocate smoothly.

In this state, the machine tool 2 supplies the gear 4 as an example of the transferred material to the starting end portion 1a and places it on the carrier 10.

As shown in FIGS. 4 (a) and 4 (b), when the acceleration of gravity is g and the coefficient of friction between the gear 4 and the carrier 10 is μ, the forward acceleration α ₁ of the carrier 10 is Is set so as to be moved forward at α ₁ <μg, the supplied gear 4 is moved while being mounted on the carrier 10.
It is stopped when the carrier 10 is stopped.

Then, when the backward movement of the carrier 10 is started, the backward movement is performed at an acceleration of α ₂ > μg as described above, so that the gear 4 and the carrier 10 mounted on the carrier 10 are separated from each other. Slid,
Only the carrier 10 is returned while the gear 4 remains at a certain position due to inertia.

In this way, the gear 4 placed on the carrier 10
According to the forward and backward cycle of this carrier 10, the carrier path
It is gradually moved in the direction of the end portion 1b in the inside of 11 by the stroke of reciprocating motion.

The movement of the gear 4 is the same in the bent portion of the conveyor body 1, and the gear 4 reaching the bent portion is moved while sliding one side to the inner wall of the guide plate 1c and reaches the next straight portion.

The gear 4 reaching the terminal end portion 1b is taken out from the conveying path 11 by the machine tool 3 at the terminal end portion 1b and is subjected to the next processing. The action similar to is started.

In this embodiment, since the directional control valve 16 and the timer device 19 are arranged, by setting the stroke of reciprocation of the carrier 10 and the cycle of reciprocation through the timer device 19, the start end portion By the reciprocating movement of the carrier 10 in accordance with the cycle of supplying the transfer material to 1a, or the cycle in which the transfer material is taken out from the terminal end 1b, even if the transfer material is supplied to some extent continuously, It is also possible to prevent contact between these transports.

Further, in the present embodiment, the circular gear 4 is configured to be conveyed as an example of the above-mentioned transferred material, but the transferred material is the gear 4
Not limited to this, by setting the forward and backward cycles and strokes of the carrier 10 with the directional control valve 16 and the flow rate control valve 18, it is possible to carry a transported object having another shape and friction coefficient. is there.

Further, the shape of the carrier is not limited to this embodiment, and for example, the carrier 10 can be configured by connecting the transfer plates 7 in a band shape, and the carrier can be wound around, for example, a pulley. Is.

Further, although the air cylinder 13 is used as an example of the actuator in the present embodiment, the actuator is not limited to the air cylinder 13, and for example, a motor or the like may be arranged and the motor may be provided via a slider crank mechanism. It is also possible to connect to the carrier.

5 to 8 relate to a second embodiment of the present invention, FIG. 5 is a plan view of a curved portion of a conveyor device, FIG. 6 is a view taken along the line VI-VI of FIG. 5, and FIG. FIG. 6 is a side view and FIG. 8 is a view on arrow VIII-VIII in FIG. The same members as those in the first embodiment and members having the same functions as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In this embodiment, in the curved portion of the conveyor body 1,
A roller 20 for guiding the moving plate 7 is provided below the fixed member 1d, and the support 6 is fixed to the fixed plate 1d via a spacer 21. The fixed member is used when the moving plate 7 moves along a curved portion. By rotating the roller 20 provided in 1d, the resistance when the moving plate 7 moves along the curved portion is reduced.

9 to 10 relate to a third embodiment of the present invention, FIG. 9 is a sectional view of a curved portion of a conveyor device, and FIG. 10 is a plan view of a moving plate in the curved portion. The same members as those in the above-mentioned embodiment and members having the same function are designated by the same reference numerals and the description thereof will be omitted.

In this embodiment, in the curved portion of the conveyor body 1,
Rollers 22 are provided on both sides of the moving plate 7, and when the moving plate 7 moves along a curved portion, the rollers 22 provided on the moving plate 7 are guided by the guide portions 6a of the support 6 and rotate. The resistance when the moving plate 7 moves along the curved portion is reduced as in the second embodiment.

[Advantages of the Invention] As described above, according to the conveyor device of the invention,
Not only can the transport path be bent, but noise and fatigue are prevented from occurring, durability is ensured, and the transport path can be installed regardless of the location.

[Brief description of drawings]

1 to 4 relate to a first embodiment of the present invention, FIG. 1 is a sectional plan view of a conveyor device, and FIG. 2 is II-II of FIG.
Fig. 3 (a) is a side sectional view of a starting end portion of the conveyor device, and Fig. 3 (b) is a side sectional view of an end portion of the conveyor device.
FIG. 4 (a) is an operation state explanatory diagram when the transport body is moved forward, FIG. 4 (b) is an operation state explanatory diagram when the transport body is moved back, and FIGS. According to the second embodiment of the present invention, FIG. 5 is a plan view of a curved portion of a conveyor device, FIG. 6 is a view taken along the line VI-VI of FIG. 5, FIG. 7 is a side view of FIG.
FIG. 8 is a view taken in the direction of arrows VIII-VIII in FIG. 7, FIG. 9 and FIG.
FIG. 9 relates to a third embodiment of the present invention, FIG. 9 is a sectional view of a curved portion of a conveyor device, and FIG. 10 is a plan view of a moving plate in the curved portion. 4 …… Transported object 5 …… Coupling member 6 …… Supporting body 6a …… Guide section 7 …… Movement plate 10 …… Transporter 13 …… Actuator

Claims (1)

(57) [Claims] 1. A transport body for horizontally transporting a moving object placed on the movable plate is formed by a plurality of movable plates that are flexibly coupled in a transport direction by a coupling member, and the transport body is supported. A conveyor which is installed so as to be reciprocally movable along a guide portion provided on the body, and is provided with an actuator for moving the conveying body in the backward movement faster than the forward movement in the support body. apparatus.