JPH0630761Y2 - Carriage lifting device for accumulator - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage lifting device for an accumulator installed on a continuous processing line for strips such as strips.

[0002]

2. Description of the Related Art A continuous processing line in which a strip-shaped strip or the like is unwound from a rewinding machine, passed through a processing section for applying, drying, or heat-treating, and wound up by a winding machine is used on a rewinding side or a rewinding side. An accumulator for accumulating or feeding the strip is installed so that the processing unit does not stop even if the take side is stopped due to disconnection or connection work. In this accumulator, a belt-like material is alternately wound between a plurality of transport rolls provided on a fixed frame and a plurality of carriage transport rolls provided above the transport rolls so as to be able to move up and down. FIG. 3 shows a carriage raising / lowering device 21 of this type of accumulator, which is provided with a tuning shaft 25 rotatably driven by a drive motor 23 via a speed reducer 24 above one side of the carriage 22. The side with the shaft is called the driving side, and the opposite side is called the operating side.), And the first and second driving sprockets 26a, 26b provided at both ends of the tuning shaft 25.
The first and second drive chains 27a and 27b are respectively wound around the carriage, and one end of the first drive chain 27a is attached to the carriage 22.
Is connected to the operation side of the carriage 22 through an idle sprocket 28 provided above the operation side of the second drive chain 27b, one end of the second drive chain 27b is connected to the drive side of the carriage 22, and the other end of each drive chain 27a, 27b is connected. It has a structure in which a counterweight 29 is suspended.

[0003]

However, in the conventional carriage lifting / lowering device 21, when the first and second drive chains 27a and 27b are worn and extended due to long-term use, the carriage 22 is connected to the tuning shaft 25. Length of the first drive chain 27a and the second drive chain 27
Since the length of b is different, both drive chains 27a, 27
There was a case where the strip had a meandering due to a difference in expansion of b, the level of the carriage 22 was out of order. Therefore, the chain length has to be readjusted frequently. Therefore, as shown in FIG. 4, a carriage lifting / lowering device 31 in which the drive chains have the same length has been proposed. This one uses the two tuning shafts 25a and 25b for the carriage 22.
Is provided in parallel above and the drive shaft 33 is provided between the tuning shafts 25a and 25b via the speed reducer 32, and the drive shaft 33 is rotatably driven by the drive motor 23 via the speed reducer 24. While the drive sprockets 26 are provided at both ends of each of the tuning shafts 25a and 25b, four drive chains 27 connected to the squares of the carriage 22 are wound around the drive sprockets 26 and a counterweight 29 is hung at their tips. It is set up.

However, in this carriage lifting / lowering device 31, although the drive chains 27 have the same length, three reduction gears are required and there is a problem that mechanical loss is large. Further, since the tuning shafts 25a, 25b and the drive shaft 33 are large in number, the number of parts such as bearings for supporting them is large, and assembly and parts management are complicated and expensive. Further, since the counterweight 29 is connected to each of the four drive chains 27, there is a problem that interference with other devices in the vicinity of the accumulator and the traveling strip is likely to occur. An object of the present invention is to solve the above problems, and to provide a carriage lifting device for an accumulator which has a uniform drive chain length and maintains the level of the carriage horizontally and has a small number of parts such as a tuning shaft and a reducer. It is intended to be provided.

[0005]

In order to achieve the above object, the present invention provides a belt-like structure between a plurality of transport rolls provided on a fixed frame and a plurality of transport rolls of a carriage provided above the transport rolls. In an accumulator that alternately stores and hoists the carriage by raising and lowering the carriage, the tuning shaft provided above the carriage driving side can be driven to rotate by the drive motor via the speed reducer. And the first and second drive sprockets provided at both ends of the tuning shaft, respectively.
The second drive chain is wound, one end of the first drive chain is connected to the operation side of the carriage through a first idle sprocket provided above the operation side of the carriage, and the counterweight is hung at the other end. Connecting the one end of the second drive chain to the operation side of the carriage through a second idle sprocket provided on the drive side of the carriage and connecting the other end to the counterweight, The length from the tuning axis to the connection with the carriage is the same.

[0006]

In the structure of the present invention, the first drive chain extends horizontally from the tuning shaft to the first idle sprocket and vertically hangs from the first idle sprocket to the operation side connection portion of the carriage. The two drive chains vertically hang down from the tuning shaft to the second idle sprocket of the carriage and extend horizontally from the second idle sprocket to the operating side connection of the carriage, so both drive chains have the same length. . Therefore, the elongations of the first and second drive chains are the same, and the horizontal level of the carriage is maintained with high accuracy. When the drive motor is driven, the tuning shaft rotates via the speed reducer, and the first and second drive sprockets rotate. As a result, the first and second drive chains move, so that the carriage suspended by the first and second chains moves up and down, and the belt-shaped winding wound between the carry roll of the carriage and the carry roll of the fixed frame. Objects are stored or delivered.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an accumulator having a carriage lifting device 8 according to the present invention. The fixed frame 1 is provided with a lower mount 2 and an upper mount 3. A plurality of transport rolls 4 are rotatably supported on the lower mount 2 at regular intervals. Between the lower pedestal 2 and the upper pedestal 3, a rectangular frame-shaped carriage 5 is provided for the first and second drive chains 1 of the lifting device 8 which will be described later.
It is hung up and down by 0a and 10b. On this carriage 5, a plurality of transport rolls 6 are rotatably supported at regular intervals so as to alternate with the transport rolls 4 of the lower frame 2. The strip 7 rewound from a rewinding machine (not shown) is alternately wound between the transporting roll 4 of the fixed frame 1 and the transporting roll 6 of the carriage 5, and the tip of the strip 7 passes through a processing unit (not shown). It is designed to be wound up by a winder.

The lifting device 8 for the carriage 5 is generally
It includes a tuning shaft 9 and first and second drive chains 10a and 10b. The tuning shaft 9 is supported on the drive side of the upper frame 3 of the fixed frame 1, and can be rotationally driven by the drive motor 12 via the reduction gear 11. The first drive chain 10a is wound around the first drive sprockets 13a provided at both ends of the tuning shaft 9, and one end of the first drive chain 10a is horizontally extended and provided on the upper mount 3 above the operation side of the carriage 5. The first idle sprocket 14a is wound around the first idle sprocket 14a, and further hangs downward from the first idle sprocket 14a to be connected to the operating side of the carriage 5, while a counterweight 15 is hung at the other end.

The second drive chain 10b is wound around the second drive sprocket 13b arranged in parallel with the first drive sprocket 13a at both ends of the tuning shaft 9, and
One end thereof hangs downward and is wound around a second idle sprocket 14b provided on the drive side of the carriage 5, and further horizontally extended from the second idle sprocket 14b and connected to the operation side of the carriage 5. , The other end is the counterweight 1 of the first drive chain 10a.
Connected to 5. A chain length adjusting mechanism 16 is provided at a connecting portion of each of the first and second drive chains 10a and 10b with the carriage 5. The tuning shaft 9 and the shaft of the first idle sprocket 14a are at the same level, and the distance between the shafts is the distance between the shaft of the second idle sprocket 14b and the carriage 5 of the second drive chain 10b. Is the same as.

In the accumulator having the above structure,
As shown in FIG. 2, the first and second drive chains 10a, 1
Both 0b have a horizontal extension and a hanging part of the same length. Therefore, the length of the first drive chain 10a from the tuning shaft 9 to the connection part with the carriage 5 via the first idle sprocket 14a, and from the tuning shaft 9 to the connection part with the carriage 5 via the second idle sprocket 14b. The length of the two drive chains 10b is the same, and the extension thereof is also the same. Therefore, the driving side and the operating side of the carriage 5 are suspended by the first and second drive chains 10a and 10b under exactly the same conditions. Therefore, the level of the carriage 5 is set to the first and second drive chains 10a, 1
Even if 0b is worn and stretched due to long-term use, it is maintained horizontally without tilting. In the initial stage of winding the first and second drive chains 10a and 10b, the chain length adjusting mechanism 16 can adjust the length between the end of each chain and the connecting portion of the carriage 5.

In this accumulator, if it is necessary to stop the traveling of the strip 7 in order to cut the strip 7 on the winding side of the strip 7 or connect it to a new strip, the drive motor 12 is driven. Then, the tuning shaft 9 is rotated in the direction of arrow A. As a result, the first and second drive sprockets 13a and 13b rotate in the same direction and the counterweight sides of the first and second drive chains 10a and 10b move downward, so that the carriage 5 moves the first drive chains 10a and 10b. Ascend while being hung on. As a result, the strip 7 is stored between the transport roll 4 of the fixed frame 1 and the transport roll 6 of the carriage 5, so that the strip is continuously fed on the rewinding side.

On the contrary, when it is necessary to stop the traveling of the strip 7 in order to connect the strip 7 by replacing it with a new rewinder on the rewinding side of the strip 7, the drive motor 12 is driven. The tuning shaft 9 is rotated in the direction of arrow B.
As a result, the first and second drive sprockets 13a, 13
b rotates in the same direction, and the first and second drive chains 10a,
Since the counterweight side of 10b moves upward,
The carriage 5 includes the first and second drive chains 10a and 10b.
It descends while being hung on. As a result, since the strip 7 is fed out, even if the rewinding side is stopped, the predetermined processing is continued without stopping the strip 7 on the winding side.

[0013]

As is apparent from the above description, according to the present invention, the lengths from the tuning shafts of the first and second drive chains to the connection portion with the carriage are the same, and their elongations are also the same. As a result, the horizontal level of the carriage is maintained with high accuracy, stripping of strips and other strips is eliminated, and the frequency of carriage level inspection and chain length readjustment are reduced. Further, since the tuning shaft is a single shaft on one side, there are few parts such as speed reducers and bearings, and mechanical loss in power transmission is small. Further, it is sufficient to provide two counter weights on the driving side, and there is no interference with other peripheral devices or strips, which is advantageous in that it is safe.

[Brief description of drawings]

FIG. 1 is a perspective view of an accumulator having a carriage lifting device according to the present invention.

FIG. 2 is a side view of a carriage lifting device of the accumulator of FIG.

FIG. 3 is a perspective view of a conventional one-sided tuning shaft type carriage lifting device.

FIG. 4 is a perspective view of a conventional two-axis tuning axis type carriage lifting device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixed frame, 4 ... Conveying roll, 5 ... Carriage, 6 ... Conveying roll, 7 ... Strip (belt), 8 ... Lifting device, 9 ... Entrainment axis, 10
a, 10b ... First and second drive chains, 11 ... Reducer,
12 ... Drive motors, 13a, 13b ... First and second drive sprockets, 14a, 14b ... First and second idle sprockets, 15 ... Counterweight.

Claims (1)

[Scope of utility model registration request] 1. A belt-like material is alternately wound between a plurality of carrier rolls provided on a fixed frame and a plurality of carrier rolls of a carriage provided above the carrier rolls to elevate and lower the carriage. In an accumulator configured to store and deliver an object, a tuning shaft provided above a drive side of a carriage is rotatably driven by a drive motor through a speed reducer, and first and second tuning shafts are provided at both ends of the tuning shaft. The first and second drive sprockets are respectively
The second drive chain is wound, one end of the first drive chain is connected to the operation side of the carriage through a first idle sprocket provided above the operation side of the carriage, and the counterweight is hung at the other end. , One end of the second drive chain is connected to the operation side of the carriage through a second idle sprocket provided on the drive side of the carriage, and the other end is connected to the counterweight, A carriage lifting device for an accumulator, characterized in that the length from the tuning axis of the drive chain to the connection with the carriage is the same.