JPS5844565B2 - Acceleration or deceleration conveyor equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to acceleration or deceleration conveyor equipment.

As acceleration conveyor equipment for accelerating the conveyed object to a certain speed and sending it out, there are roller conveyors whose rotational speeds increase sequentially and multi-stage belt conveyors whose conveyance speeds increase sequentially. Also, slippage occurs between the conveyed object and the conveyor at locations where the speed changes stepwise.

Therefore, if conventional acceleration conveyor equipment is used as a conveyor device for transferring to another tray conveyor, etc.,
Even if the conveyed object is supplied to the acceleration conveyor equipment synchronously with the tray of the tray conveyor, the timing when transferring from the acceleration conveyor equipment to the tray will be different.

Therefore, it may be possible to continuously change the speed of one belt conveyor from low speed to high speed, supply objects to be conveyed onto this belt conveyor in a low speed state, and have the objects transferred to a tray conveyor etc. in a high speed state. , since the rising speed gradient must be set to a reasonable and reasonable state, the time taken from the lowest speed to the highest speed and back to the lowest speed again is
The cycle takes a long time, and it is not possible to supply the objects intermittently.

Therefore, the time interval between receiving and receiving the transported object becomes longer,
A practical problem arises.

Such problems also occur in conventional reduction conveyor equipment.

The present invention provides an acceleration or deceleration conveyor equipment that can solve the above-mentioned problems, and below, based on the attached illustrative diagrams, it is possible to feed objects to a tray conveyor by applying the acceleration conveyor equipment according to the present invention. Explain the equipment.

In FIG. 1, reference numeral 1 denotes a tray conveyor, in which trays 2 connected at regular intervals move in the direction of the arrow, and the moving speed (conveying speed) is varied within a certain range.

Reference numeral 3 denotes a feed conveyor line, which is disposed at an angle of 45 degrees diagonally rearward with respect to the tray conveyor 1.

This feed conveyor line 3 includes a power roller conveyor 5 equipped with a stopper 4 that can be raised and lowered at the end, and a cut-off conveyor 6 that is driven at a constant speed by a motor with a cyclo reducer via a clutch/brake unit (Electropack). , a tact feeder 7 for correcting the posture of conveyed objects and sending them out, and an accelerating conveyor equipment 8 according to the present invention
and a final feeder 9 for feeding objects to the tray conveyor.

The tact feeder 7 will be explained based on FIGS. 2 and 3. Reference numeral 10 denotes a winding conveyance device, in which a wire is inserted between a common drive pulley 11 and a tail boot IJ-12 in the axial direction of these pulleys. It consists of an endless belt (power scrum) 15 that is hung at regular intervals and whose middle part is supported by support rollers 13 and 14, and the drive pulley 11 is pivotally supported between a pair of left and right support columns 16, and the tail pulley 12 and support rollers 13 and 14 are supported by a frame 18 that is vertically swingable about the shaft 1γ of the drive pulley 11.

The free end of the frame 18 is coupled to a piston rod 21 of a cylinder/piston unit 20 that is pivotally supported on a base 19, and by this cylinder/piston unit 20,
The winding and conveying device 10 can be integrally moved up and down within the range regulated by the upper limit stopper 22 and the lower limit stopper 23.

Reference numeral 24 denotes a fixed receiving plate, which is located at an intermediate position of each winding and conveying device 10, away from the boot IJ-11, 12 and the support rollers 13, 14, and is mounted on the support stand 25 via a support 26, respectively. installed.

These fixed receiving plates 24 are at a height such that they protrude slightly above the upper surface of the winding and transporting device 10 only when the winding and transporting device 10 is at the lower limit position regulated by the lower limit stopper 23 (however, Approximately half of the fixed receiving plate 24 adjacent to the drive pulley 11 on the drive boob IJ-11 side is recessed below the upper surface of the winding and conveying device 10).

21 is a variable speed motor interlockingly connected to the drive pulley 11 via synchro pulleys 28, 29, a synchro belt 30, and a worm reducer 31.

A fixed receiving plate 24 adjacent to the tail pulley 12 is provided with a protruding object posture correction stopper 32 .

The stoppers 32 are arranged in a dogleg shape so as to restrict and stop the transported object 33, which has a substantially square planar shape, with one corner oriented in the transport direction, and the height thereof is as follows: When the winding conveyance device 10 is at the upper limit position regulated by the upper limit stopper 22, the winding conveyance device 1
The height is such that it does not protrude from the top surface of 0.

Reference numeral 34 denotes a turning guide for turning the transported object 33 in advance in order to bring the transported object 33 into contact with the group of stoppers 32 in a predetermined direction.
An arm 36 which is pivotally supported by and interlocks with the turning guide 34 via the vertical shaft 35 is connected to a piston rod 39 of a cylinder/piston unit 38 which is pivotally supported to the machine frame by a vertical shaft 37. The piston unit 38 is configured so that the turning guide 34 can be rotated and retracted to the side of the conveyance path.

To explain how to use and how it works, the wrapping conveyor device 1
0 is at the upper limit position, each endless belt 15 is driven by the motor 27, and the turning guide 34 is held in a posture protruding diagonally into the conveyance path. When the object 33 is fed onto the wrapping conveyance device 10, the object 33 to be conveyed is turned along the turning guide 34 into a posture with one corner oriented in the conveying direction, and is conveyed by the wrapping conveyance device 10.

When the transported object 33 reaches just in front of the stopper 32 group (detected by a photoelectric switch, etc.), the cylinder/piston unit is activated to move the wrapping transport device 10 downward around the shaft 17 of the drive pulley 11. The object 33 is moved onto the fixed receiving plate 24 by swinging.

The conveyed object 33 transferred onto the fixed receiving plate 24 slides in the conveying direction due to inertia and the fact that the fixed receiving plate 24 is tilted forward and downward, and comes into contact with a group of stoppers 32 and stops.

Thereafter, the turning guide 34 is rotated outward about the vertical axis 35 by the cylinder/piston unit 38 and retracted to the side of the conveyance path.

Note that by slowing down the speed at which the wrapping conveyance device 10 is lowered, the conveyed object 33 is placed on the stopper 32 while the upper surface of the wrapping conveyance device 10 is at an intermediate height between the fixed receiving plate 24 and the tip of the stopper 32. It is also possible to make the object 33 transfer onto the fixed receiving plate 24 at the same time or immediately after the abutment.

As described above, the receiving plate 2 fixes the transported object 33 in a posture corrected state.
4, and when a conveyed object sending signal is input, the cylinder/piston unit 20 raises the winding conveyance device 10 from the lower limit position to the upper limit position.

As a result, the conveyed object 33 is transferred from the fixed receiving plate 24 onto the winding conveyance device 10, and when the upper surface of the winding conveyance device 10 becomes higher than the stopper 32, the conveyed object 33 is transferred to the winding conveyance device 10. It is sent to the next stage acceleration conveyor equipment 8.

Next, the acceleration conveyor equipment 8 according to an embodiment of the present invention will be explained based on FIGS. 4 and 5. 40 is a first belt conveyor, and 41 is a second belt conveyor.

42 is a variable speed motor installed on the machine frame 43, and includes synchro pulleys 44, 45 and synchro belt 46.
The output shaft of the worm reducer 47 is connected to the input shaft 5 of two cyclic automatic continuously variable transmissions 48 and 49 installed on the machine frame 43.
0 through two sets of gear wheels 51, 52, 53 and take-up gear wheels 54, 55, 56 via two sets of chinos 5γ.

The output shaft 58 of one transmission 48 is a speed increaser (a cyclo reducer used in reverse) that is interlocked and connected to the power pulley 62 of the first belt conveyor 40 via synchro pulleys 59 and 60 and a synchro belt 61. 63, and the output shaft 58 of the other transmission 49 is connected to a speed increaser (similar to the above) which is interlockingly connected to a power pulley 67 of the second belt conveyor 41 via synchro pulleys 64, 65 and a synchro belt 66. )68.

69.70 is the tail pulley of the belt conveyor 40.41, and 71.72 is the support roller thereof.

The two transmission devices 48 and 49 cyclically change the rotational speed of the output shaft 58, which rotates once per revolution of the input shaft 50, within a certain range. As shown in FIG. 6, the maximum speed of the output shaft 58 of the first transmission 48 and the minimum speed of the output shaft 58 of the second transmission 49 are configured to be approximately equal, and the first transmission 48 at the maximum speed of the output shaft 58 and the second transmission 49
The configuration is such that the time when the output shaft 58 is at its lowest speed substantially coincides in time.

The speed increase ratio of the speed increaser 63°68 and the belt transmission means 59,
The transmission ratios of 60.61, 64, and 65.66 mean that the first belt conveyor 40 and the first belt conveyor 40 and The belts of the two-belt conveyor 41 are set so that they can each be rotated by the full length valve of the conveyance path.

One embodiment of the first and second bicyclic automatic continuously variable transmissions 4849 will be explained based on FIGS. 7 to 10, taking the first transmission 48 as an example. A transmission member 73 is keyed to the shaft 50, and the transmission member γ3 is movable only in the radial direction via a slide needle bearing γ5 in an axially penetrating groove 74 with a pinched cross section provided in the radial direction. a slide member 76 fitted into the input shaft 50; a passive member 77 keyed to the output shaft 58 supported eccentrically with respect to the input shaft 50; and a cover engraved in the radial direction on the passive member 77. an engagement guide groove 78, two rollers so and si pivotally supported on the slide member 76 by a common shaft 79, and an annular guide groove 83 carved in the fixed member 82 so as to surround the input shaft 50.
One roller 80 fits into the annular guide groove 83, and the other roller 81 fits into the secured guide groove 78.

The annular guide groove 83 is connected to the output shaft 5 as shown in FIG.
The output shaft 58 is rotated in order to have a constant speed path in the lowest speed range and the highest speed range of No. 8, and to make the rising speed gradient from the lowest speed gentler and the falling speed gradient from the highest speed steeper. It is formed in a shape (see FIGS. 9 and 10) to correct speed changes.

That is, if the roller 81 is supported at a position with a constant radius relative to the input shaft 50, the speed change curve of the output shaft 58 becomes a mere substantially sine curve.

In order to correct this to a curve like 1 shown in Figure 6,
The rotation radius of the roller 81 is automatically corrected according to the rotation angle by the radial movement of the slide member 76 due to the engagement between the annular guide groove 83 and the roller 80. The passive member 77 is rotated with a speed change curve as shown in FIG.

Note that as shown in FIGS. 9 and 10, the first transmission 4
Since the shapes of the annular guide grooves 83 are slightly different between the two transmission devices 48 and 49, the shapes of the rotational speed change curves of the output shafts 58 of both devices 48 and 49 are slightly different.

To explain the usage and operation of the acceleration conveyor equipment 8, the maximum speed S of the second belt conveyor 41 is S.
= 1.5s (the included angle between the tray conveyor sln 45°1 and the feed conveyor line 3 is 45 degrees), and the rotation speed of the variable speed morph 42 is adjusted so that the rotation speed of the variable speed morph 42 is The variable speed motor 42 is operated in synchronization with the upward movement of the winding conveyance device 10 in the tact feeder γ so that the conveyed object 33 to be fed is transferred when the first belt conveyor 40 is rotating at the lowest speed. The first and second belt conveyors 4
Drive 0.41 by 1.

Note that the minimum speed of the first belt conveyor 40 is equal to the transport speed of the winding transport device 10 in the tact feeder 7.

The conveyed object 33, which is connected to the first belt conveyor 40 rotating at the lowest speed, reaches the end of the first belt conveyor 40 with the conveyed speed increased to the maximum speed of the first belt conveyor 40. , and then the second belt conveyor 4
Transfer to 1.

At this time, the second belt conveyor 41 is rotating at a minimum speed substantially equal to the maximum speed of the first belt conveyor 40, so the conveyed object 33 can be transferred without slipping.

The conveyed object 33, which is connected to the second belt conveyor 41, reaches the end of the second belt conveyor 41 with the conveyed speed increased to the maximum speed S of the second belt conveyor 41, and is transferred to the final stage of the next stage. It is sent to feeder 9.

Note that the maximum speed of the second belt conveyor 41 is equal to the conveyance speed of the feeding conveyor 84 of the final feeder 9, which will be described next.

The final feeder 9 will be explained based on FIGS. 11 and 12. The feeding conveyor 84 feeds the conveyed object 33 onto the tray conveyor 1 from an angle of 45 degrees diagonally backward with respect to the tray conveyor 1. It is constructed in a substantially triangular shape from a plurality of endless healds (Panflex slam) 86 groups driven by a power pulley 85 and a plurality of endless belts (Panflex slam) 88 groups driven by a power pulley 87. There is.

89 is a tail pulley that hangs the free ends of the endless belts 86 and 88 individually, and 90 is a tail pulley that hangs a plurality of endless belts 86 of the same length, both of which are used for tensioning the belts. The position is adjustable.

Support rollers 91 and 92 support the intermediate portion of the endless belt.

The reason why all the endless belts are not hung on one power pulley 85 is to prevent excessive differences in the amount of belt elongation (to make the belt lengths average).

93 is a variable speed motor installed in the machine frame 94,
An intermediate shaft 98 is driven via synchro pulleys 95 and 96 and a synchro belt 91.

One end of this intermediate shaft 98 is connected to a belt type continuously variable transmission device 99.
This power pulley 85 and the other power pulley 87 are interlocked and connected via synchro pulleys 100, 101 and a synchro belt 102.

Reference numeral 103 denotes a short auxiliary conveyor, which is interposed between the feeding conveyor 84 and the tray conveyor 1, and has a plurality of short endless belts arranged in series with each endless belt row of the feeding conveyor 84. It has a belt (synchrobel 1-) 104.

Each endless belt 104 has two synchronized pulleys 105,
106, and synchro pulley 1 at the rear end of each group.
06 is interlockingly connected to the front end synchronizer IJ-105 of an adjacent set via a shaft 107, so that all the short endless belts 104 are configured to rotate in an interlocking manner.

A synchro pulley 105 located at the forefront end is operatively connected to the other end of the intermediate shaft 98 via a belt type continuously variable transmission 108.

The two continuously variable transmission devices 99, 108 have two split boobies IJ-110 on the input side whose tilting distance can be adjusted by a rotary handle 10γ, and two split boobies on the output side that are always urged by a spring to approach each other. Split pulley 111 and both pulleys 1
It consists of a belt 112 stretched between 10 and 111, and the transmission ratio can be changed steplessly by operating a rotary handle 109.

To explain how to use it, each endless belt 86, 88 of the feeding conveyor 84 is driven by a variable speed motor 93.
, is driven to have a conveying speed S″F1.5ssrn 45°.

In this case, the belt type continuously variable transmission 99 is not particularly required, but can be used for speed correction.

At the same time, each endless belt 104 of the auxiliary conveyor 03 is also driven, but normally the transmission ratio of the belt type continuously variable transmission device 108 is adjusted so that the conveyance speed is equal to the conveyance speed of the feed conveyor 84. Adjust it.

The conveyed object 33 is supplied onto the feed conveyor 84 from the belt conveyor 41 in the previous stage at a speed equal to the conveyance speed S.
is successively conveyed by this feeding conveyor 84 at a conveying speed S, and is transferred onto the tray conveyor from an angle of 45 degrees diagonally backward by being given inertia at the same speed S by the auxiliary conveyor 03. become.

At this transfer speed S, since the minute speed of the tray conveyor in the conveyance direction is approximately equal to the conveyance speed S of the tray conveyor, the conveyed object 33 almost moves relatively in the conveyance direction on the tray of the tray conveyor. It will move almost accurately to the specified position without any trouble.

Even when the conveyance speed S of the tray conveyor is changed, the drive speed by the variable speed motors 27, 42, 93 is manually or automatically corrected in accordance with the changed speed, so that the second belt conveyor 41 is always Maximum speed of infeed conveyor 8
By setting the conveyance speed S of the tray conveyor 4 and the auxiliary conveyor 03 to 1.55, the conveyed objects can always be reliably and accurately fed onto the tray conveyor.

As a result, the conveyance speed of the tray conveyor becomes very low, and the inertial transfer speed of the conveyed object 33 becomes S', 1.5.
If the friction between the tray conveyor and the tray is overcome and the tray cannot be accurately fed to a predetermined position, that is, if the conveyance speed S of the tray conveyor becomes below a certain level, the feed conveyor 84 The conveyance speed is S′,
The speed is adjusted to 1.5 s, but the conveying speed of the auxiliary conveyor 03 is increased by operating the belt-type continuously variable transmission 108 to a speed at which the necessary inertia transfer speed of 1.5 s or more can be obtained. put.

With this modification, the infeed conveyor 84 has a
The conveyed object 33 sent at a speed of
Immediately before the transfer to 1.
Since the necessary inertia force can be applied by accelerating to a speed of 58 or higher, the conveyed object 33 can be transferred to the tray conveyor 1 as before.
This allows you to reliably transfer it to the specified position above.

Note that the transmission ratio of the belt type continuously variable transmission device 108 may be configured to be automatically adjusted.

It is also possible to use any convenient type of continuously variable transmission for this purpose.

In the tact feeder 7, the timing for sending out the transported object 33 in the posture correction stopped state is
The tray 2 to which the object to be transported is to be transferred is placed on the upper side of the receiving point for the time required for the object to be transferred to the tray 2 for the time required for the object to be transferred to the tray 3 to be sent out by the auxiliary conveyor 103 at the final stage. is the conveyance speed S of tray conveyor 1
Even if the speed changes, as mentioned above, the rotational speeds of the variable speed motors 27, 42, 93 for driving the tact feeder γ, the acceleration conveyor equipment 8, and the final feeder 9 are adjusted in accordance with the conveyance speed, and the final Since it is possible to obtain a conveyance speed of 1.5 seconds with eight wheels, the timing at which the conveyed object 33 is sent out from the tact feeder 7 can always be kept constant.

The conveyor equipment according to the present invention can be implemented and used as an acceleration conveyor equipment as described above, and the conveyed object receiver safely transfers the conveyed object onto the conveyor by setting the speed at low speed when picking up the conveyed object. Moreover, it is possible to increase the speed to the required level when sending it to the next stage.

Furthermore, since the conveyor is divided into multiple stages, as long as the low-speed conveyor in the first stage returns from the highest speed to the lowest speed, the next conveyed object can be fed onto that conveyor. Compared to the case of accelerating at a speed, the interval between feeding objects can be significantly shortened, allowing for highly efficient work.

Moreover, when transferring objects between conveyors at each stage,
Since the conveyance speeds of both adjacent conveyors are approximately the same, there is no slippage of the conveyed object during conveyance, and therefore, as described in the example, the conveyor on the side that receives and takes the conveyed object Even in cases where receiving locations are determined at predetermined intervals in the transport direction, there is no inconvenience such as the timing of the transfer being shifted due to slips and being unable to transfer to the predetermined location, ensuring a safe and reliable system at all times. It can do the work.

Of course, conveyor equipment is also known that is configured to eliminate slippage between the conveyor and the conveyed object when the conveyed object is transferred between front and rear conveyors having different speeds.

For example, Japanese Patent Publication No. 4417817 and Japanese Patent Publication No. 50-1408
In the invention described in No. 9, the conveyor is driven at a constant speed via a conveyor and a power transmission spring, and the speed difference when the conveyed object transfers between the front and rear conveyors is compensated for by the speed difference between the conveyed object and the conveyor. This is absorbed by the deformation of the power transmission spring due to frictional resistance.

Moreover, in the invention described in JP-A-50-14088,
The conveyor is supported so as to be movable back and forth, and the position of the conveyor is maintained by a positioning spring. The structure is such that it is absorbed by the movement of the particles.

In these conventional configurations, the intended purpose cannot be achieved unless the power transmission spring or the conveyor positioning spring has a constant spring constant corresponding to the load to which the conveyor is subjected.

In other words, unless the object to be conveyed always satisfies certain conditions in terms of weight, shape, bottom surface properties, etc., the desired slip elimination effect cannot be obtained.

In contrast, according to the configuration of the present invention, the conveyance speeds of the adjacent conveyors are forcibly changed between high and low speeds by a cyclical automatic continuously variable transmission device, so that one conveyor has the lowest speed. The time when the conveyor reaches its maximum speed and the time when the other conveyor reaches its maximum speed (equal to the minimum speed of the one conveyor) are made to substantially coincide, and at this time the conveyed objects can be transferred between both conveyors without slipping. Therefore, there are restrictions on the conveyance pitch of the conveyed object, but there are no conditions that determine the frictional resistance between the conveyed object and the conveyor, such as the weight, shape, and bottom surface properties of the conveyed object. Regardless of the type of conveyed object, it is possible to reliably eliminate slip between the conveyor and the conveyed object when transferring between both conveyors, and to accelerate or decelerate the conveyed object at the desired conveyance speed. This made it possible to transport the material accurately.

Of course, unlike conventional configurations, there is no need to configure the conveyor as a floating type or install a power transmission spring in the drive system, so the entire conveyor equipment can be constructed strongly, and the conveyor can be driven with large torque. Because it is easy to
It is also suitable for transporting large and heavy objects.

It goes without saying that the conveyor installation according to the invention can also be effectively used as a speed reduction conveyor installation.

Furthermore, the continuously variable transmission devices 48 and 49 described in the embodiment can also use the input shaft 50 as the output shaft and the output shaft 58 as the input shaft.

Furthermore, this continuously variable transmission can be effectively used when accelerating or decelerating one conveyor.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of the entire structure, FIG. 2 is a plan view of the tact feeder, FIG. 3 is a side view of the same, and FIG. 4 is a partially cutaway plan view of the acceleration conveyor equipment according to an embodiment of the present invention. Figure 5 is a side view of the same side, Figure 6 is a graph showing changes in rotational speed, and Figure 7 is a graph showing changes in rotational speed.
The figure is a partially cutaway side view of the cyclic automatic continuously variable transmission, Figure 8 is a partially cutaway plan view of the same, Figures 9 and 10 are diagrams showing the annular guide grooves of each transmission, and Figure 11 is the final feeder. FIG. 12 is a side view of the same. 1... Tray conveyor, 3... Infeed conveyor line, 5... Power roller conveyor, 6... Cut-off conveyor, 7...・・・
・Tact feeder for correcting the posture of conveyed objects and sending them out, 8・
...Acceleration conveyor equipment, 9...Final feeder for feeding objects, 40, 41...
... Belt conveyor, 42 ... Variable speed motor, 48, 49 ... Circulating automatic continuously variable transmission, 5
0...Input shaft, 58...Output shaft, 61
．． 66... Synchro belt, 62.67...
... Power Boo IJ-163, 68 ... Speed increaser, 73 ... Transmission member, 74 ... Radial groove, 76 ... Slide member , 77...
...Passive member, γ8...Engaged guide groove, 8
0,81...Roller, 83...Annular guide groove.

Claims (1)

[Scope of Claims] 1. An endless winding system for placing and conveying a conveyed object has a plurality of conveyors equipped with belt-shaped bodies arranged in series so that the conveyed object can be transferred one after another. Each conveyor is linked to a drive source through a cyclic automatic continuously variable transmission device that cyclically and forcibly varies the speed between a minimum speed and a maximum speed, and the maximum speed of one of the adjacent conveyors is The minimum speed of the other conveyor is configured to substantially match the minimum speed of the other conveyor, and furthermore, each conveyor receives and takes the object to be conveyed at the minimum speed (or maximum speed), and also receives and takes the object to be conveyed at the maximum speed (or minimum speed). Acceleration or deceleration conveyor equipment configured to be driven synchronously with each other to deliver to the next stage. 2. The cyclic automatic continuously variable transmission device includes an input shaft 50 and an output shaft 58 that are eccentrically supported relative to each other, a first member that rotates in conjunction with one of the shafts, and a first member that rotates only in the radial direction of the first member. a second member rotatably attached to the slide member; a second member rotatable in conjunction with the other shaft and having an engaged guide that is long in the radial direction; a roller that engages to be relatively movable only in the horizontal direction; an annular guide provided on the fixed member so as to surround the shaft having the first member; and a roller that is pivotally supported by the slide member and engages with the annular guide. The annular guide has a substantially constant speed region in the lowest speed region and the highest speed region of the output shaft, and changes the rotational speed of the output shaft in order to steepen the falling speed gradient from the highest speed. 2. The acceleration or deceleration conveyor equipment of claim 1, wherein said acceleration or deceleration conveyor equipment is formed into a shape for modifying.