JPH0885629A - Turnover discharger of container - Google Patents

Abstract

PURPOSE: To compactify the driving mechanism of a turnover discharge for containers as well as to make improvements in rotational performance for turnover operation. CONSTITUTION: In this turnover discharger, a holding cylinder 6 is installed in a lifter 3 as a holding actuator, while a push rod 25 is rotatably connected to an expansion rod 24 of this holding cylinder 6 in a relative manner, whereas it advances or retreats in the axial direction integrally at the same axis, and a support shaft 13 is formed into a cylindrical form, fitting and supporting the expansion rod 24 and the push rod 25 in this support shaft 13. A tip part of the push rod 25 is linked and connected to a container holding arm 15 via a transmission mechanism, thereby opening or closing the container holding arm 15 by expansion motion of the holding cylinder 6 via the push rod 25 and the transmission mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a container reversal discharge device for discharging contents by gripping, ascending, and reversing a container containing powdered or granular materials such as chemicals.

[0002]

2. Description of the Related Art As this kind of reversal discharge device, there is a device described in Japanese Patent Laid-Open No. 270891/1990. The device is provided with a pair of right and left gripping fingers that greatly extend to the left and right and moves linearly to the left and right, and a driving air cylinder is provided for each finger, and the whole of them rotates as a rotating body to invert the container. It is a structure.

[0003]

Since the left and right container gripping fingers are each provided with a gripping air cylinder, the gripping mechanism becomes large, and the gripping air cylinder is provided on the rotating body side. As the weight of the body itself increases, the piping between the air cylinder and the pneumatic unit on the non-rotating member side has a complicated structure, and the cost also increases. Furthermore, since the piping itself moves with the rotation of the rotating body,
The piping is not durable.

The object of the present invention is to make the mechanism for reversing and driving the container gripping arm compact, improve the rotation performance by suppressing the weight on the rotating body side, and drive the container gripping arm or open / close the slide gate cylinder. The purpose is to simplify the piping structure by arranging the pipe on the side of the lifting body.

[0005]

According to the first aspect of the present invention,
A support shaft is rotatably provided on an elevating / lowering body supported by a support column, and a pair of container gripping arms is openably and closably provided at the tip of the support shaft, and the container gripping arm is interlocked with a gripping actuator. At the same time, in a container reversal discharge device in which a support shaft is interlockingly connected to a rotation actuator, a gripping cylinder is provided as a gripping actuator on an elevating body, and the telescopic rod of the gripping cylinder has the same axis as the gripping cylinder. The push rod is integrally movably moved back and forth in the axial direction but relatively rotatably connected, the support shaft is formed into a tubular shape, and the telescopic rod and the push rod are fitted and supported in the support shaft,
The tip portion of the push rod is interlockingly connected to the container gripping arm via a transmission mechanism, and the container gripping arm is opened and closed via the push rod and the transmission mechanism by the expansion and contraction operation of the gripping cylinder.

According to a second aspect of the present invention, in the container reversing / ejecting device according to the first aspect, a reversing motor as a rotating actuator is mounted on an elevating body, and an output gear of the reversing motor is provided on an outer periphery of a support shaft. It meshes with the gear fixed to.

According to a third aspect of the present invention, a supporting shaft is rotatably provided on an elevating body which is supported by a column so as to be able to move up and down, and a pair of container gripping arms is provided at the tip of the supporting shaft so as to be openable and closable.
In a container reversal discharge device in which a container gripping arm is interlockingly connected to a gripping actuator, and a support shaft is interlockingly connected to a rotating actuator, a chute that has a slide gate at a tip discharge port and is fitted into the container,
A support shaft is rotatably supported, and a lifting / lowering body is provided with a gate opening / closing cylinder. The slide gate and the gate opening / closing cylinder are provided with engaging portions that are engaged with each other when the container is turned over. The slide gate of the chute fitted into the inverted container is opened and closed by the expansion and contraction operation of the work cylinder.

[0008]

The container gripping cylinder extends and pushes the push rod forward to close the container gripping arm via the transmission mechanism. Also, the chute descends and fits into the container.

Next, the elevating body is raised to a predetermined height,
By driving the reversing motor and rotating the support shaft,
Invert the container integrally with the gripping arm.

At this time, the push rod rotates integrally with the transmission mechanism and the gripping arm, but since the rotation is not transmitted from the push rod to the telescopic rod, the telescopic rod of the gripping cylinder does not rotate.

At the end of reversal, the opening / closing cylinder provided on the lifting body and the engaging portions of the slide gate are engaged with each other. By operating the opening / closing cylinder in this state, the slide gate is opened and the contents are discharged.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 8 show an embodiment of the present invention, and show a reversing and discharging device suitable for handling a drum can D containing a medicine as a container.

In FIG. 1, a column 1 is rotatably installed on a floor of a factory or the like, and has a proper chain-driving type or ball screw-type lifting mechanism incorporated therein.
The elevation drive mechanism is configured to raise and lower the elevation body 3 on the front surface.

The lifting / lowering body 3 includes a reversing bearing case 5, an air cylinder 6 for gripping arranged on the rear side of the bearing case 5, and a reversing bearing with a brake arranged on the lower side of the bearing case 5. A motor 7 is provided, and a gate opening / closing air cylinder 10 is provided at the lower end.

A horizontal front projecting cylindrical support shaft 13 is rotatably supported in the bearing case 5 via a bearing 12, and a U-shaped bracket 1 is provided at the front end of the support shaft 13.
4 is integrally fixed. At the front end of the bracket 14, a pair of left and right container gripping arms 15 are supported by a pair of left and right vertical hinges 11 so as to be openable and closable left and right.

The vertical width W of the container gripping arm 15 has a dimension substantially corresponding to the distance between the upper flange 8 of the drum can D and the intermediate reinforcing rib 9 so that the drum can D does not slip off.

A large-diameter drive gear 20 is provided on the outer periphery of the support shaft 13.
The drive gear 20 is meshed with the output gear 21 of the reversing motor 7, and the rotation of the reversing motor 7 causes the support shaft 13 to rotate via the gears 21 and 20 so that the drum can D is reversed. It has become.

A chute support arm 16 is rotatably supported on the upper surface of the bracket 14 via a horizontal support shaft 17, and the chute support arm 16 has a conical chute 1.
8 is fixed. A slide gate 23 is provided at the tip of the chute 18, and the tip discharge port of the chute 18 is opened and closed.

The chute support arm 16 and the container gripping arm 15 have lock bolts 3 each having an engagement ring 35a.
5, and a manual lock mechanism including a protrusion 36 engageable with the engagement ring 35a is provided. Lock bolt 3
5 is fixed to the chute support arm 16 so that the screw boss 3
7, and the protrusion 36 is fixed to the gripping arm 15. That is, the engagement ring 35a is attached to the protrusion 36.
To engage the ring and rotate the locking bolt 35 to rotate the ring 35.
By pulling up a, the chute 18 is moved to the drum can D
It is fastened to the upper opening of the.

The container-holding air cylinder 6 is arranged coaxially with the support shaft 13, and the telescopic rod 24 thereof is inserted into the support shaft 13 to be fitted and supported. Telescopic rod 2
A coaxial push rod 25 is arranged on the front side of 4, and the push rod 25 is fitted and supported in the support shaft 13 and moves forward and backward integrally with the telescopic rod 24 in the axial direction. Are rotatably connected. For example,
As shown in FIG. 8, an engaging projection 38 having an enlarged columnar head portion 38a is integrally formed at the front end portion of the telescopic rod 24, while an engaging hole 39 is formed at the rear end portion of the push rod 25. The head portion 38a is accommodated in the engagement hole 39 so as to be relatively rotatable.

The front end of the push rod 25 projects into the U-shaped bracket 14 as shown in FIG. 1 and is interlocked with the container gripping arm 15 via a first link mechanism 26 for opening and closing the container gripping arm. It is interlockingly connected to the chute support arm 16 via a second link mechanism 27 for opening and closing the chute.

In FIG. 2 showing the II-II cross section of FIG. 1, the space (opening width) C between the left and right tips when the container gripping arm 15 is opened is larger than the outer diameter of the drum D, and The D can be inserted between the container holding arms 15 from the front.

The first link mechanism 26 will be described. In FIG. 4, a pair of left and right drive links 30 is rotatably connected to a single vertical support shaft 28 provided at the tip of the push rod 25, and the shaft center of the vertical support shaft 28 is both. It is a common fulcrum portion A of the drive link 30. Both drive links 30 are spread laterally in a Y shape, and the distance between the tips of both drive links 30 is wider than the distance between the left and right hinges 11. On the other hand, the container gripping arm 15 is formed with a bracket 31 in the vicinity of the hinge so as to project rearward, and the drive link 30 is provided at the rear end of the bracket 31.
Is rotatably connected via a support shaft 33, and the shaft center of the support shaft 33 is a movable support point B of each drive link 30.

As the push rod 25 moves forward, both drive links 30 move forward while widening the opening angle, whereby the container gripping arms 15 rotate in the closing direction around the hinge 11.

With respect to the forward movement of the drive link 30,
The outer peripheral rear end edges of both hinges 11 function as stoppers, and when the two drive links 30 are aligned, in other words, the left and right movable fulcrums B and the common fulcrum A at the rod tip are shown in FIG. When the drive links 30 become substantially straight as described above, both drive links 30 are brought into contact with and locked to the rear end edge of the hinge 11. At this time, the maximum clamping state is reached, and the drum D is gripped with a predetermined gripping pressure.

Second link mechanism 27 for opening and closing the chute
Will be described with reference to FIG. A downwardly projecting bracket 40 is formed on the lower surface of the U-shaped bracket 14, and a pair of left and right "re" -shaped links 42 are rotatably supported on the bracket 40 via a horizontal fixed support shaft 41. ing. A long hole is formed at the upper end of the link 42, and the long hole is engaged with the pins 45 on both the left and right sides of the push rod tip. A front upper end portion of the link 42 is pivotally connected to the chute support arm 16 via a connecting rod 44 extending upward. That is, when the push rod 25 advances, the link 42 rotates clockwise around the fixed support shaft 41, lowers the chute support arm 16 via the connecting rod 44, and mounts the chute 18 on the upper end of the drum can D.

When the push rod 25 is retracted, the link 42 abuts on the rear surface of the U-shaped bracket 14 and is locked. The locking position and the stroke end of the air cylinder 6 are substantially coincident with each other.

FIG. 7 is a plan view of the slide gate 23. A shield plate 49 is inserted in a sandwich shape in a case 47 having an opening 48. By pulling a handle 50 of the shield plate 49 from the state shown in FIG. The opening 48 is opened by sliding the shielding plate 49 rearward.

A bent portion 50a is formed at the tip of the handle 50 as shown in FIG. 6, while a U-shaped engaging fitting 51 is provided at the tip of the rod 10a of the opening / closing cylinder 10. During the reversing operation, the bent portion 50a moves in the groove direction of the engaging fitting 51 and enters the groove, and the rod 50a of the cylinder 10 is contracted in the reversing posture to pull the handle 50. Has become.

As shown in FIG. 7, a locking roller 56 is provided at the tip of the case 47 and is rotatably biased by a spring 53 to a position where the handle 50 is always locked. , When the bent portion 50a enters the U-shaped bracket 51,
The metal fitting 51 causes the roller 56 to resist the spring 53 and the grip 50.
It is designed to be pushed out from. That is, the lock is released.

The operation will be described. (1) Before the drum is gripped, the chute 18 is raised as shown in FIG. 1 and the container gripping arm 15 is open as shown in FIG. 2, and the drum D is inserted into the container gripping arm 15 from the front. Insert. Further, as shown in FIG. 7, the shield plate 49 of the slide gate 23 is locked at the closed position by the locking roller 56 via the handle 50.

(2) The telescopic rod 24 of the gripping air cylinder 6 extends and pushes the push rod 25 forward to move the container gripping arm 1 via the first link mechanism 26.
Simultaneously with the closing of 5, the chute 18 descends via the second link mechanism 27.

That is, in the first link mechanism 26, from the state shown in FIG. 4, both drive links 30 move forward while increasing the opening angle, and the container gripping arm 15 is closed around the hinge 11 via the bracket 31. And rotate.
When both drive links 30 are moved forward until they are aligned as shown in FIG. 5, both drive links 30 are locked by the rear edge of the hinge 11. In this state, the container gripping arm 1
5 holds the drum with a substantially predetermined gripping force.

In the second link mechanism 27, the square-shaped link 42 is rotated clockwise as shown in FIG. 3, whereby the chute 18 is lowered through the connecting rod 44, and the chute 18 is fitted onto the drum upper end surface. To do. After the chute is fitted, the engagement ring 35a of the locking bolt 35 is engaged with the protrusion 36 and the bolt 35 is rotated to lock the chute 18 on the drum can side.

(3) In the state shown in FIG. 3, the lifting / lowering body 3 rises to a predetermined height.

(4) After rising, the reversing motor 7 is driven to rotate the support shaft 13 via the gears 21 and 20, and
The drum D is inverted as shown in.

In this case, the fulcrum A of the first link mechanism 26,
Since B is aligned on a straight line, even if a large force is applied from the drum D to the container gripping arm 15 to spread it out, the drive link 30 is made to project forward from the state of FIG. Hinge 11
Is securely locked by. Therefore, it is possible to prevent a decrease in gripping force during reversal.

(5) In the final step of reversing, the bent portion 50a of the handle 50 of the slide gate 23 is engaged with the U-shaped metal fitting 51 of the gate opening / closing cylinder 10, and the locking roller 56 of FIG. It is removed from the handle 50 against 53. That is, the lock of the closed state of the slide gate 23 is released.

(6) Rod 1 of opening / closing air cylinder 10
When 0a contracts, the shield plate 49 of the slide gate 23 slides backward, and the opening 48 is opened.
As a result, the contents are discharged.

(7) In the state where the reversal is completed, the entire weight of the contents is applied to the chute 18 and tries to open the chute 18 downward. However, since the chute 18 is manually fastened to the container gripping arm 15, the chute is closed. 18 can't be opened.

Even when a problem such as an air leak occurs in the gripping air cylinder 6 and the pressure pushing the push rod 25 decreases, the fulcrums A and B of the first link mechanism 26 are aligned on a straight line as described above. The force that the drum D tries to spread the container gripping arm 15 is received by the front hinge 11 via the drive link 30. That is, the drive link 30 does not move, and therefore
Even if the air in the air cylinder 6 escapes, the container gripping arm 15 does not open, and the drum does not rattle or fall off.

(8) After the contents are discharged, the rod 10a of the opening / closing air cylinder 10 extends again to close the opening 48 as shown in FIG.

(9) The container D is returned to the upright posture as shown in FIG. 1 by reversing the support shaft 13. At this time, when the bent portion 50a is separated from the U-shaped metal fitting 51 of the rod 10a of the opening / closing air cylinder 10, the locking roller 56 automatically returns to the state of FIG. 7 so that the shielding plate 49 does not fall out. Lock it.

(10) While raising the chute 18, the container holding arm 15 is opened and the drum D is taken out.

[0045]

[Another embodiment]

(1) A hydraulic cylinder may be used as the container gripping actuator.

[0046]

As described above, according to the invention of claim 1 of the present application, (1) the lifting cylinder 3 which is a non-rotating body is provided with the gripping cylinder 6, and the supporting shaft 13 and the like are provided on the rotating body side. The push rod 25 and the telescopic rod of the gripping cylinder, which are provided in the connecting structure, can transmit power only in the axial direction, and the power transmission in the rotation direction is cut off, so that the weight on the side of the rotating body can be reduced and inverted. Sometimes it is not necessary to rotate the rod itself of the grasping cylinder 6, the durability of the grasping cylinder 6 is improved, the rotational driving force can be reduced, and the container rotates smoothly.

(2) Since the gripping cylinder 6 is provided on the lifting body 3 which is a non-rotating body, the piping for supplying the fluid pressure is simplified as compared with the case where the lifting cylinder 3 is provided on the rotating body side.

(3) Telescopic rod 24 of gripping cylinder 6
Since the push rod 25 and the push rod 25 are fitted and supported in the tubular support shaft 13, it is not necessary to specially provide a support member for the push rod 25, and the drive mechanism can be made compact.

According to the second aspect of the present invention, in addition to the structure of the first aspect, it is interlockingly connected to the reversing motor 7 via the gear 20 fixed to the outer periphery of the support shaft 13, and the support shaft 13 is provided from the outer peripheral side. Since the rotation power is transmitted to
The gear can be arranged as close to the gripping arm side as possible, and the power transmission loss for reversal can be suppressed to be small.

According to the third aspect of the invention, the slide gate 23 can be automatically opened / closed when the container is in the inverted state, and the opening / closing cylinder itself is
Since it is provided on the side of the lifting body that is a non-rotating body, it is possible to suppress an increase in weight on the side of the rotating body, maintain the rotating performance of the rotating body, and simplify the fluid pressure supply pipe of the opening / closing cylinder.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a reversal discharge device to which the present invention is applied.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a vertical cross-sectional side view of the reversing discharge device in which both the container gripping arm and the chute are in a closed state.

FIG. 4 is an enlarged plan view of a transmission mechanism when the container gripping arm is opened.

FIG. 5 is an enlarged plan view of the transmission mechanism when the container gripping arm is closed.

FIG. 6 is a vertical cross-sectional side view of the reversal discharge device showing a state at the time of reversal.

FIG. 7 is a plan view of a slide gate.

FIG. 8 is an enlarged vertical sectional view of a connecting portion between the air cylinder and the push rod.

[Explanation of symbols]

 1 Support 3 Lifting Body 6 Air Cylinder for Grasping Container 7 Motor for Reversing 13 Support Shaft 15 Container Grasping Arm 16 Chute Support Arm 23 Slide Gate 24 Telescopic Rod 25 Push Rod 26 First Link Mechanism (Transmission Mechanism) 50a Bending Section Example of mating part) 51 U-shaped metal fitting (example of engaging part)

Claims (3)

[Claims] 1. An elevating body supported by a column so as to elevate and lower,
A support shaft is rotatably provided, and a pair of container gripping arms is provided at the tip of the support shaft so as to be openable and closable, and the container gripping arm is linked to a gripping actuator, and the support shaft is linked to a rotation actuator. In a container reversing discharge device, a gripping cylinder is provided as a gripping actuator on an elevating body, and the gripping cylinder moves integrally in the axial direction with the same axis as the gripping cylinder, but relatively. The push rod is rotatably connected, the support shaft is formed in a tubular shape, and the telescopic rod and push rod are fitted and supported in the support shaft, and the tip of the push rod is interlocked with the container gripping arm via the transmission mechanism. A container reversing discharge device, characterized in that the container gripping arm is opened and closed via a push rod and a transmission mechanism by connecting and contracting the gripping cylinder. . 2. The container reversing discharge device according to claim 1, wherein a reversing motor is mounted on a lifting body as a rotating actuator, and an output gear of the reversing motor is engaged with a gear fixed to an outer periphery of a support shaft. A container inversion discharge device characterized by being combined. 3. An elevating body supported by a column so as to elevate and lower,
A support shaft is rotatably provided, and a pair of container gripping arms is provided at the tip of the support shaft so as to be openable and closable, and the container gripping arm is linked to a gripping actuator, and the support shaft is linked to a rotation actuator. In a container reversal discharge device, a slide gate is provided at the tip discharge port, and a chute fitted into the container is rotatably supported by a support shaft, and a cylinder for opening and closing the gate is provided on the elevating body. And the gate opening / closing cylinder are provided with engaging portions that engage with each other when the container is turned upside down, and the slide gate of the chute fitted in the inverted container is opened and closed by the expansion / contraction operation of the gate opening / closing cylinder. A container inversion discharge device characterized in that.