JP2557988B2 - Lifter for chemical container - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical container lifter which is optimal for supporting a chemical container for a long time on a working machine such as a tableting machine or an inspection machine.

(Prior art and its problems) In a working machine such as a tableting machine and an inspection machine in a pharmaceutical factory, a container containing a chemical is placed on the working machine when manufacturing, inspecting or bagging tablets, powdered medicines and the like. It is necessary to support it stably for a long time.

Therefore, conventionally, a table for supporting a container is provided for each work machine, the container is lifted on the table, and the container and the work machine are connected to perform work such as tableting.

However, it is uneconomical to provide a table for supporting a container for each work machine. Although it is possible to handle the container with a forklift, it is not preferable to perform the work with a normal forklift because it is necessary to maintain a clean state in a pharmaceutical factory.

The present invention has been made in order to solve the above problems, and a chemical container lifter capable of transporting a chemical container onto a working machine and stably supporting it on the working machine for a long time. The purpose is to provide.

(Means for Solving the Problem) The present invention has a pillar that is erected between a floor and a ceiling and that is rotatably provided around a vertical axis, and that is provided inside the pillar and that lifts an external lift up and down. The pillar includes a lift support mechanism that supports the movable support, a first lock mechanism that maintains a vertical movement of the lift support mechanism in a stopped state, and a second lock mechanism that maintains a rotation operation of the pillar in a stopped state. ,
An upper support shaft 12 fixed to the upper end is rotatably supported by a bearing 14 attached to the ceiling, and a lower support shaft 13 fixed to the lower end is rotatably supported by a bearing 22 attached to the floor. The lifter is supported by a screw shaft 25 extending vertically inside the pillar.
A lifting nut 30 screwed to the screw shaft 25, a connecting member connecting the lifting nut 30 and the lift 43, a rail 40 extending in parallel with the screw shaft 25 and provided in the pillar, and a screw shaft. twenty five
And a motor with reduction gear 26 for rotating and driving, and the connecting member includes a block 41 through which a slit 45 vertically provided in the pillar is inserted, and a slider slidably fitted to the rail 40.
36, the lift support mechanism rotates the screw shaft 25 to vertically move the lifting nut 30 along the screw shaft 25 and simultaneously move the connecting member and the lift 43 up and down along the rail 40. Both ends of the blind 46 stretched over the upper roller 50b and the lower roller 49 in a state where the slit 45 is closed from the inside are fixed to the upper and lower ends of the block 41. The feature is that it moves up and down with movement.

(Operation) The lift support mechanism rotates the screw shaft 25 to vertically move the lifting nut 30 screwed to the screw shaft 25 along the screw shaft 25, and at the same time, moves the lift 43 vertically along the rail 40. It is designed to move. Therefore, in the present invention, since the lifting nut 30 that is the base end portion that supports the lift 43 is screwed into the screw shaft 25, the lifting nut 30 that is at a predetermined height position, and thus the lift 43. Is the screw shaft
It cannot slide down along 25. Moreover, since the rotation of the screw shaft 25 is maintained in the stopped state by the first lock mechanism, the screw shaft 25 is relative to the lifting nut 30 in a state where the lift is supported at the predetermined height position. Never rotate.

Since the pillar is rotatable about the vertical axis and has a lift support mechanism inside, the lift 43 stably supported at a predetermined height position by the lift support mechanism, by rotating the pillar, It is possible to rotate 360 degrees around without changing the lift support mechanism. Therefore, the turning operation becomes stable, and the lift 43 is stably supported by the lift supporting mechanism as described above even at the position after turning.

(Embodiment) FIG. 1 is a vertical sectional view of the present invention, FIG. 2 is an enlarged vertical sectional view of an upper portion of the present invention, FIG. 3 is a horizontal sectional view of the present invention, and FIG. 5 and 5 are schematic plan views showing an example of an embodiment of the present invention.

In the figure, 10 is a rectangular pillar, and the outer peripheral portion thereof is covered with a cover 11 made of stainless steel, hard resin or the like. An upper support shaft 12 (Fig. 2) and a lower support shaft 13 (Fig. 4) are concentrically provided at both upper and lower ends of the pillar 10, respectively.

The upper support shaft 12 is axially supported by the cylindrical shaft 15 via a bearing 14 (FIG. 2). The cylinder shaft 15 supports the bearing 14 at its tip, and the flanged base end of the cylinder shaft 15 penetrates the ceiling plate 16 and is fixed to the ceiling 17 with bolts 18. Also, the cylinder shaft 15
The periphery of the is covered with a decorative plate 19 (Fig. 2). The lower support shaft 13 is axially supported by a base 21 fixed to the floor 20 via bearings 22 (FIG. 4). Therefore, the pillar 10
The bearing 14 and the bearing 22 are rotatably supported around the vertical axis.

A lift support mechanism A is housed inside the pillar 10. The lift support mechanism A includes a screw shaft 25 extending vertically in the pillar 10, a lifting nut 30 screwed into the screw shaft 25, and a connecting member connecting the lifting nut 30 and the lift 43. The rail 40 is provided with a rail 40 extending parallel to the screw shaft 25 and provided in the pillar, and a motor 26 with a speed reducer for rotationally driving the screw shaft 25. The connecting member includes a support plate 32, a side frame 33, a lift plate 34, a cast iron slider 36, and a block 41.

The screw shaft 25 is eccentric with respect to the support shafts 12 and 13.
The upper end of the screw shaft 25 is connected to a motor 26 with a reduction gear housed inside the upper end of the pillar 10. Motor with reducer 26
Is a controller fixed to the cover 11 of the pillar 10
It is connected to a power source (not shown) via 27, and is controlled by the controller 27 so as to be freely reversible.

As shown in FIGS. 3 and 4, a lifting nut 30 is screwed onto the screw shaft 25. The lifting nut 30 is a bolt
It is fixed to a support plate 32 by 31 and the support plate 32 is fixed to a lift plate 34 with a bolt 35 via a pair of side frames 33. A pair of sliders 36 arranged vertically are fixed to the lift plate 34 by bolts 37. The lifting plate 34 has a block
41 is fixed by welding or the like, and a lift 43 made of stainless steel is fixed to the elevating plate 34 by bolts 42 via the block 41.

Each slider 36 has a generally U-shaped cross section (FIG. 3) and is slidably fitted only in the vertical direction on a rail 40 extending parallel to the screw shaft 25. Therefore, since the lifting nut 30 is prevented from being hung around by the side frames 33, the lifting plate 34, the slider 36, and the rail 40, the lifting nut 30 moves up and down by the rotation of the screw shaft 25 as described later. Furthermore, since the lifting plate 34 is integrally connected to the lifting nut 30 via the side frame 33 and the support plate 32, it moves up and down together with the lifting nut 30.

The block 41 projects to the outside of the pillar 10 through a slit 45 (FIG. 4) formed in the cover 11 of the pillar 10. The slit 45 extends in the vertical direction of the pillar 10 by an amount corresponding to the elevation of the lift 43.

At the upper end of the block 41, one end of the blind 46 is fixed by a screw 47, and at the lower end of the block 41,
The other end of the blind 46 is fixed by a screw 48.
The blind 46 extends upward from the block 41 with the slit 45 closed from the inside, and the roller 50b and the pressing roller 50a.
Via the roller 49, and extends upward with the slit 45 blocked from the inside via the roller 49, and is fixed to the block 41. Therefore, as will be described later, when the lift plate 34 moves up and down, the blind 46 always operates so as to close the slit 45. Instead of the blind 46, the slit of the pillar 10 may be formed of a pair of elastic rubbers, and the block may move up and down while being pressed by the elastic rubbers.

As shown in the lower side of FIG. 4, a screw shaft lock mechanism (first lock mechanism) B is provided at the lower end of the screw shaft 25. The screw shaft lock mechanism B includes a gear 50 fixed to the lower end of the screw shaft 25, a stopper 51 that meshes with the gear 50, and a stopper 51.
A pedal portion 52 formed integrally with the pedal portion 52, a pin 53 integrally extending from a side portion of the pedal portion 52, and a hook portion 54 with which the pin 53 is locked.
And a handle portion 55 that drives the key portion 54.

The pedal portion 52 is supported rotatably around a pivot 56, and is biased upward by a tension spring 57. The stopper 51 is set to mesh with the gear 50 when the pedal portion 52 is biased upward as shown in the figure. The pivot 56 and the tension spring 57 are fixed to the frame of the pillar 10. Further, the hook portion 54 is provided with an arm 54a extending upward, and the arm 54a has a pivot 58a.
It is pivotally supported by the frame of the pillar 10 through.

When the pedal 52 is depressed from the state shown in the figure, the pedal
52 rotates in the direction of arrow R about the pivot 56 against the spring force of the tension spring 57. As a result, the stopper 51 is disengaged from the gear 50, and then the pin 53 is locked to the hook portion 54 and the two-dot chain line 52
Move to the position indicated by a. Further, when the handle portion 55 is pushed into the pillar 10 from that state, the pin 53 is disengaged from the hook portion 54, so that the pedal portion 52 is rotated in the opposite arrow R direction by the elasticity of the tension spring 57. As a result, the stopper 51 meshes with the gear 50 and the screw shaft 25 is locked, that is,
The rotation operation of the screw shaft 25 is maintained in a stopped state.

Further, as shown in the lower side of FIG. 4, a pillar lock mechanism (second lock mechanism) D is provided inside the lower end of the pillar 10. The pillar lock mechanism D includes a pedal 60 protruding to the outside of the pillar 10 and a pivot 61 pivotally supporting the pedal 60.
A stopper rod 62 that moves up and down in conjunction with the pedal 60 around a pivot 61 as a fulcrum, and a coil spring 63 that urges the stopper rod 62 downward.

The stopper rod 62 is a base in the locked state shown in the figure.
It is set so as to move upwards against the elasticity of the spring 63 by fitting into a bottomed stopper hole 64 provided in 21 and depressing the pedal 60. As a result, the stopper rod 62 comes out of the stopper hole 64, and the stopper state is released. In this way, the pillar lock mechanism D can lock the pillar 10, that is, can maintain the rotation operation of the pillar 10 in a stopped state.

 Next, the operation of the lifter of the present invention will be described.

In the stationary state shown in FIG. 1, first, the chemical container 70 is placed and fixed to the lift 43, and then the screw shaft locking mechanism B
Depress the pedal portion 52 of to unlock the screw shaft 25. Next, operate the controller 27 to operate the motor 26 with a reducer.
When, for example, is operated in the normal rotation direction, the rotational force of the motor 26 is transmitted to the screw shaft 25, and the screw shaft 25 rotates clockwise.
As a result, the lifting nut 30 moves upward, so that the lifting plate 34 also moves upward. Therefore, the lift 43 connected to the elevating plate 34 via the block 41 moves upward while supporting the container 70, and is lifted to the position shown by the chain double-dashed line 43a. And the handle portion of the screw shaft lock mechanism B
Push 55 into the inside of pillar 10 and screw screw lock mechanism B again.
Lock the screw shaft 25 with.

Next, depress the pedal 60 of the pillar lock mechanism D to unlock the pillar 10, and rotate the pillar 10, that is,
The lift 43 is turned and the lift 43 is arranged, for example, directly above the tabletting machine 71. Then, by returning the pedal 60, the pillar 10 is locked again.

Finally, the screw shaft lock mechanism B is released again, the lift 43 is set to a desired position, the container 70 and the tablet press 71 are connected to lock the screw shaft lock mechanism B, and the tableting work is performed. To do. Here, as shown in FIG. 5, a working machine such as a tablet machine.
By disposing 71 to 75 around the pillar 10 in 360 degrees around the same circumference at equal intervals, the work can be smoothly performed only by rotating the pillar 10, and the work efficiency is improved.

During the above work, the blind 46 covers the slit 45 as the lift plate 34 of the lift support mechanism A moves up and down.
The dust generated when the machine operates can be blocked, and the workplace can be kept clean. Further, since the inside of the machine is cut off from the slit 45, the appearance of the machine is improved.

Further, since the lifting nut 30 that is the base end portion that supports the lift 43 is screwed into the screw shaft 25, the lifting nut 30 that is at a predetermined height position, and thus the lift 43 is the screw shaft 25.
It is not possible to slip downwards along. Moreover,
Since the screw shaft 25 is locked by the screw shaft locking mechanism B, the screw shaft 25 does not rotate relative to the lifting nut 30 when the lift 43 is supported at the predetermined height position.

Further, by rotating the pillar 10, the lift 43 can be rotated 360 degrees around the height 43 without changing the lift support mechanism A. Therefore, the turning operation becomes stable, and the lift 43
The lift support mechanism A also stably supports the position after turning.

(Effects of the Invention) As described above, the present invention has the following effects.

(1) Since the lifting nut 30 that is the base end portion that supports the lift 43 is screwed into the screw shaft 25, the lifting nut 30 that is at a predetermined height position, and thus the lift 43 is the screw shaft 25. It can be surely prevented from sliding downward along the line. Moreover, since the rotation of the screw shaft 25 is maintained in a stopped state by the screw shaft lock mechanism B, the screw shaft 25 is held against the lifting nut 30 while the lift 43 is supported at the predetermined height position. It can prevent relative rotation. Therefore, according to the present invention, the lift 43 can be stably supported at an arbitrary height position for a long time.

(2) Since the pillar 10 is rotatable about the vertical axis and has the lift support mechanism A inside, the lift support mechanism A
The lift 43 is stably supported at a predetermined height by
By rotating the pillar 10, it is possible to rotate 360 degrees around the same height position without operating the lift support mechanism A, as shown in FIG.
Therefore, the turning operation can be performed stably, and the lift 43 can be stably supported by the lift support mechanism A even at the position after turning. That is, according to the present invention, it is possible to stably rotate the supported lift 43 around 360 degrees and stably support it at that position for a long time.

(3) Since the supported lift 43 can be rotated 360 degrees around, a large number of work machines 71 to 75 can be arranged in the order of steps to sequentially arrange and circulate the container 70 as shown in FIG. The efficiency can be improved.

(4) Since the blind 46 that closes the slit 45 from the inside is provided, it is possible to prevent the dust inside the machine from being discharged to the outside, to keep the workplace clean, and to improve the aesthetics of the device. .

[Brief description of drawings]

1 is a longitudinal sectional view of the present invention, FIG. 2 is an enlarged vertical sectional view of the present invention, FIG. 3 is a lateral sectional view of the present invention, and FIG. 4 is a lower enlarged vertical sectional view of the present invention. The drawing is a schematic plan view showing an example of an embodiment of the present invention. 10 ... pillar, 12 ... upper support shaft,
13 ... Lower support shaft, 14, 22 ... Bearing, 25 ... Screw shaft, 26 ... Motor with reducer, 30 ... Lifting nut, 36 ... Slider, 40 ... Rail, 41 ... Block, 43 ... Lift, 45 ... Slit, 46 ...
Blinds, 49, 50b ... Rollers, 50 ... Gears, 51 ... Stoppers, 62 ... Stopper rods, 64 ... Stopper holes

Claims (1)

(57) [Claims] 1. A pillar that is erected between a floor and a ceiling and is rotatable around a vertical axis, and a lift support mechanism that is provided inside the pillar and vertically supports an external lift. And a second lock mechanism that keeps the vertical movement of the lift support mechanism in a stopped state, and a second lock mechanism that keeps the rotation operation of the pillar in a stopped state. The pillar has an upper support fixed to the upper end. A shaft (12) is rotatably supported by a bearing (14) mounted on the ceiling, and a lower support shaft (13) fixed at the lower end is rotatably supported by a bearing (22) mounted on the floor. This makes it possible to rotate freely. The lift support mechanism includes a screw shaft (25) extending vertically inside the pillar, a lifting nut (30) screwed to the screw shaft (25), and a lifting and lowering mechanism. Connecting member that connects the nut (30) and lift (43) A rail (40) extending parallel to the screw shaft (25) and provided in the pillar, and a motor (26) with a reduction gear that rotationally drives the screw shaft (25). The block (41) is inserted through the slit (45) provided in the direction, and the slider (36) is slidably fitted to the rail (40). The lift support mechanism includes a screw shaft (25).
By rotating, the lifting nut (30) is moved up and down along the screw shaft (25), and at the same time, the connecting member and the lift (43) are moved up and down along the rail (40). The upper and lower ends of the block (41) are fixed to both ends of a blind (46) stretched over the upper roller (50b) and the lower roller (49) with the slit (45) closed from the inside. , A lifter for a chemical container, which is adapted to move up and down as the block (41) moves up and down.