JP2620071B2 - Container transport device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a transfer device for a transfer container which is suitably used for transferring powders and the like.

(Background technology)

For example, in the case of molding a synthetic resin as an example, the supply of material to a hopper of a molding machine is generally performed by air transport using pipes. Not only does the site become complicated (at least two pieces of air and material are required, and when multiple materials need to be mixed, a corresponding number of pipes are required for each molding machine), In addition to the hassle of cleanup, the effects of noise from the power source for pneumatic transportation cannot be ignored, there are problems on the work site such as requiring a work space, and the pipe hose length is large. In such a case, there are also problems in material molding such as separation and removal and reduction of the moisture content.

[Object of the invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a simple container transporting device used as a transporting device such as a closed container capable of transporting a granular material in a sealed state.

[Disclosure of the Invention]

In order to achieve this object, in the closed container transport device of the present invention, a base is suspended via a lifting hand on a carriage that reciprocates along a rail, and left and right openings formed in the base are provided. A container transporting device having a structure in which a pair of gripping arms are provided for each of the gripping arms, wherein each of the pair of gripping arms has a hook at a tip, and a hook is formed above the hook by a spring. It has a small claw that urges the elastic force in the closing direction to be pulled to the side, and the other end is protruded from each opening formed in the base, and the appropriate position of each arm body is placed below the base. Pivoted to the formed mounting part,
Further, the base and the arm body each have a structure in which an elastic force is constantly applied to the arm in a closing direction by a spring which is bridged between respective positions of the base and the arm body. A parallel lever provided with a stepped notch that can be engaged with a suitable upper end of each arm is pivotally supported inside each opening of the base, and an outer end of the parallel lever is connected to each of the bases. The structure is provided with an auxiliary mechanism that is structured to be pulled downward from outside of the opening by a spring.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of a system for supplying a material to a molding machine in which the container transport device of the present invention is used. First,
To explain the outline of the material supply system, the molding machine materials are mixed and mixed in an amount according to the molding machine by a mixing device (not shown), supplied to a hopper dryer A1, and subjected to appropriate dehumidification. It is housed in a more sealed container F. In the material supply station A, the material is supplied by controlling the rotation of the rotary valve A3. However, when the closed container 1 is placed on the mounting table A5 and the material is supplied from the hopper dryer A1, the material is supplied as shown in FIG. At the position shown in (a), the upper lid of the sealed container F is pushed down and opened by the operation described later, and the material is supplied via the hopper dryer A1. When the material supply is completed, the mounting table A5 on which the container F is placed is moved to the position shown in (b), and then the rail provided in the space above the pipe between the material supply station A and each molding machine B ... The gripping arms 2, 2 of the carriage 10, which moves along C, descend and grip the auxiliary plate 11b (see FIG. 2) of the closed container F, and fold up and down the lifting hands 8, 8 of the carriage 10. Then, the sealed container F is lifted. Sealed container F
Is raised to the appropriate height, the carriage 10
Is moved to a position above the molding machine B to which the material is to be supplied while holding the closed container F by the gripping arms 2 of the carriage 10. In this way, when the closed container F is transferred above the molding machine B to which the material is to be supplied, the folded lifting / lowering hands 8, 8 are extended downward, and the closed container F is moved to the desired molding machine B. Lower upward. Thus, the sealed container F is the hopper of the molding machine B.
When placed above B1, the sealed container F is operated by the operation described below.
The lower lid is pushed up and opened, and the material contained in the closed container F is discharged into the hopper B1 of the molding machine B. E is a centralized control panel for controlling this system, A2 is a dehumidifier, C1 ... is a supporting column for supporting the rail C upward, and C2 is a trolley for supplying power to the carriage 10. It is a duct.

FIG. 2 shows the basic structure of the container transport device of the present invention. Openings 1a, 1a are opened on the left and right sides of the base 1, and one end of each of the openings 1a, 1a is opened. The gripping arms 2, 2 are arranged so as to protrude. Each of the gripping arms 2, 2 is formed by stacking two arm flat plates having the same shape by three mounting shaft members 2c, 2d, 2e, and has a hook 2a at its tip and a small portion. It has claws 3. The small claw 3 is pivotally attached to an appropriate position of the arm 2 above the hook 2a, and is bridged between a shaft member 3b provided between the forked forks and the mounting shaft member 2c of the arm 2. The structure is such that an elastic force in the gripping direction, that is, in the closing direction that is pulled toward the hook 2a side is urged by the passed spring 30. Note that 3c
Is a stopper for regulating the closing operation of the claw. Each of the gripping arms 2 is pivotally supported by a mounting portion 1b provided below the base 1, and a shaft 2e of the arm 2 and a mounting plate 1c at the lower center of the base 1.
The structure has a structure in which the elastic force in the closing direction is always urged by the spring 20 bridged between them.

The upper side of each of the gripping arms 2 protrudes from an opening 1a provided in the substrate 1, and a stopper piece 1d is provided on an outer edge of the opening 1a to regulate a closing angle when the arm 2 is opened. ing.

Above the base 1, a pair of parallel levers 4a are disposed so as to be orthogonal to the upper ends of the respective arms 2. The parallel levers 4a pivot inside the opening 1a with support pieces 4c. Support,
A spring 40 is provided at an end located outside the opening 1a,
The elastic force in the pulling direction is urged toward the base 1 side. A stepped notch 4b having a sufficient width is formed at a portion of the parallel lever 4a corresponding to the upper end of the gripping arm 2. When the arm 2 is opened and closed, the stepped notch 4b is formed. A mounting shaft 2d provided at the upper end of the gripping arm 2 is engaged so as to slide.

The parallel lever 4a and the spring 40 provided corresponding to the grip arm 2 constitute the auxiliary mechanism 4, and apply a braking force to the closing operation of the spring 20 when the grip arm 2 opens and closes, thereby opening and closing the grip arm 2. This is to make the operation smooth.

The base 1 has the above-described structure, and two side pieces 5a, 5a of a housing 5 provided on the base 1 are provided with elevating hands 8, 8 formed in a pantograph shape. 5 is connected to a wire rope 7 via a moving pulley 6.
Is provided. The wire rope 7 is wound or unwound by a carriage 10 attached to the rail c (see FIG. 1) so as to be able to reciprocate, and the pantograph-shaped elevating hands 8, 8 are extended and retracted to elevate the base 1. Let it.

FIGS. 3 and 4 show the structure of the carriage. The carriage 10 has a pantograph-shaped elevating hand 8, 8 provided below a rectangular housing 101, and the base 1 is hung. .

A geared motor 102 has two sprockets 103 and 110 on its output shaft.

The sprocket 103 transmits the rotational force to the electromagnetic clutch 105 via the chain 108, and the driving wheel 106 mounted on the rail C
Is rotated to move the carriage 10, and the sprocket 110 is moved by a wire take-up reel 114 via a chain 109.
Is rotated to move the base 1 up and down. Also, 11
Reference numeral 1 denotes a clutch that controls transmission of the rotational force of the motor 102 to the reel 114. When the electromagnetic clutch 105 is disengaged and the electromagnetic clutch 111 is in a contact state, the rotational force of the motor 102 is not transmitted to the driving wheel 106, so that the wire 7 is wound or unwound by forward and reverse rotation of the motor 102. The base 1 moves up and down, but when the electromagnetic clutch 105 is in contact and the clutch 111 is in a disconnected state, the wire take-up reel 114 is
Is stopped, and the carriage 10 is reciprocated along the rail C. When the rotation of the motor 102 is stopped, the elevating operation and the reciprocating operation are stopped.

Reference numeral 107 denotes a wheel, 104 denotes an electromagnetic brake for stopping the rotation of the rotating shaft, and 112 denotes a wire guide roller. In such a transfer device, the container F grips the auxiliary plate 11c of the container between the hook 2a of the gripping arm 2 and the small claw 3 by the operation described later, and moves the lifting hands 8, 8 up and down. The carriage mounted on the rail can be moved along the rail to be conveyed.

 Next, the operation of the transport device of the present invention will be described.

FIG. 5 shows a state (referred to as a reset state) until the base 1 is lowered by extending the contracted lifting / lowering hand (not shown) until the container F is gripped. The pair of gripping arms 2, 2 provided in the pair have a substantially parallel positional relationship with each other under the tensile force of the springs 20, 20, and the small claw 3 provided above the hook a of the gripping arm 2, The hook 2a is formed by the tensile force of the spring 30 and the stopper 3c.
In the closest relationship to. The parallel lever 4a of the auxiliary mechanism 4 also has a positional relationship parallel to the base 1 due to the tensile force of the spring 40.

When the wire rope 7 is rewound in such a reset state and the base 1 is further lowered, the tapered portion 21a formed at the tip of the hook 2a of the arm 2 becomes an auxiliary plate 11b of the container F.
The arm 2 is gradually spread out against the elastic force of the spring 20, and the arm 2 engaged with the space 4b with the parallel lever 4a as the arm 2 opens.
The parallel lever 4a lifts the free end by the tensile force of the spring 40 (at this time, the small claw 3 also moves the auxiliary plate 11 of the container F).
(b) contacts the tapered portion of b and opens upward against the elastic force of the spring 30). When the auxiliary plate 11b of the container F fits into the space between the hook 2a of the arm 2 and the small claw 3,
The opened arm 2 is closed by the tension of the spring 20. In this state, the motor 10 in the carriage 10
When the rotation of the base 2 is stopped and the elevation of the base 1 is stopped, the arms 2 and 2 secure the auxiliary plate 11b of the container F between the small claw 3 and the hook 2a as shown in FIG. Can be grasped. When releasing the gripped container F, the motor 102
The wire rope 7 wound around the reel 114 by rotating
The arms 2 and 2 are further opened while the small claw 3 is opened upward against the spring 30 and the elastic force as the base 1 is further lowered. 7 and the container F is released from gripping. After releasing the holding of the container F in this manner,
When the wire rope 7 is wound around the reel 114 in the carriage 10 and the base 1 is further raised, the contact with the container F is lost, so that the arms 2, 2 try to close instantly by the restoring force of the springs 20, 20. However, when the arms 2 and 2 are opened, the free end of the parallel lever 4a of the auxiliary mechanism 4 is lifted by the pulling force of the spring 40, and the arms 2 and 2 have the engaging recesses 4b of the parallel levers 4a and 4a. , 4b, a force opposing the closing direction acts, so that when the arms 2, 2 reach the reset state from the start of closing, the arms 2, 2 are initially subjected to a braking force that gradually decreases gradually, and the closing operation is performed slowly. . Also,
When the arms 2, 2 are opened, the auxiliary mechanism 4 applies a force in the opening direction from the upper end of the gripping arm, and thus has an effect of facilitating the opening operation. After releasing the grip of the container F, it is necessary to raise the small claws 3, 3 and the hooks 2a, 2a of the arms 2, 2 again to the position of the auxiliary plate 11b in the container F. Therefore, in the reset state, the small claws 3, 3 of the arms 2, 2 and the hooks 2a, 2a
It is needless to say that it is necessary to set the space generated between them to be smaller than the thickness of the auxiliary plate 11b of the container F.

FIG. 8 is another example of the transfer device of the present invention,
At the time of releasing the grip of the arms 2, 2, the shafts 2d, 2d provided at one end of the shaft 2 are provided with the recesses 4 provided in the parallel levers 4a, 4a of the braking mechanism 4.
b, 4b, and is fixed to the arm. The opening angle of the arm is set in the recesses 4b, 4b, and the shafts 2d, 2d of the arms 2, 2.
Is specified. At the time of release, arms 2, 2
When the parallel levers 4a, 4a are fitted into the recesses 4b, 4b of the parallel levers and the opening angle is fixed, when the gripping operation is started again, the engagement between the arms 2, 2 and the parallel levers 4a, 4a is released. Therefore, the axes 2d, 2d of the arms 2, 2 must be connected to the parallel levers 4a, 4a.
While being locked to the recesses 4b, 4b, the operating portions 12a, 12a of the reset member 12 are brought into contact with a convex portion (not shown) provided on the carriage 10 side, and the reset member 12 is pressed down to lock. The structure is such that it can be released and returned to the original state.

FIG. 9 shows an example in which the lifting hands 8 ', 8' provided on the carriage 10 have a structure in which a number of cylinders are concentrically extended and contracted, and the lifting hands 8 ', 8'
8 'expands and contracts automatically as the base moves up and down.

〔The invention's effect〕

As understood from the above description, according to the container transport device of the present invention, a base is suspended via a lifting hand on a carriage that reciprocates along a rail, and a gripping arm is attached to the base. The arm is automatically opened and closed by simply raising and lowering the base by moving the lifting hand up and down, so that the closed container can be gripped or released and suspended and transferred. It can be installed by using the space above the site and extra space, and has the advantages that it does not take up space like a conveyor device, and that there is little noise during driving.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of a material supply system using the container transport device of the present invention, FIG. 2 is a structural diagram of a main part showing an embodiment of the present invention, and FIG. FIG. 4 is a view showing the structure of the carriage, and FIGS.
Fig. 8 is an explanatory view of the operation of the gripping arm, Fig. 8 is a structural view of a main part of another example of the present invention, and Fig. 9 is an explanatory view of another example of the lifting hand. (Explanation of reference numerals) 1... Base 1a, 1a... Opening 2,2... Grasping arm 2a... Hook 2b, 2b... Support point 3... Parallel lever 4b, 4b Recess 4c, 4c Support point 5 Housing 7 Wire rope 8, 8 Lifting hand C1 Rail 10 Carriage 20, 30, 40 Spring

Claims (1)

(57) [Claims] A base is suspended via a lifting hand on a carriage which can reciprocate along a rail, and a pair of gripping arms are disposed in each of left and right openings formed in the base. A container transport device having a structure as described above, wherein each of the pair of gripping arms forms a hook at a tip,
Above the hook, there is a small claw that urges the elastic force in the closing direction that is pulled toward the hook by a spring, and the other end is projected from each of the openings formed in the base, and A structure in which an appropriate position of the arm body is pivotally supported by a mounting portion formed below the base, and furthermore, an elastic force is constantly urged in the closing direction to the arm by a spring spanning the appropriate position of the base and the arm body. And a parallel lever provided with a stepped notch that can be engaged with a suitable upper end of each of the pair of gripping arms above the base from the opening of each of the bases. Characterized in that an auxiliary mechanism is provided for pivotally supporting the inside of the parallel lever, and the outer end of the parallel lever is pulled downward by a spring from the outside of each opening of the base. apparatus.