JP2001301954A - Device for delivering workpiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a workpiece delivering device requiring no component change even when a size of a workpiece is different, and excellent in working efficiency. SOLUTION: Side belts for carrying clampingly workpiece is provided in the workpiece delivering device for delivering, in order, to a carrying-out conveyer the work positioned in a downstream end of a carrying-in conveyer out of the works carried in by the conveyer. A control means is provided to control a work carrying speed by the side belts. The work carrying speed upto the vicinity of the work delivering position by the side belts is made higher than a work carrying speed by the work carrying-in conveyer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work cutting device for separating and aligning a work conveyed on a work conveying path at a predetermined pitch.

[0002]

2. Description of the Related Art For example, in a process of filling a container with liquid or powder, a so-called work cutout is performed in which containers are separated one by one, aligned at a predetermined pitch, and transferred to a liquid or powder filling process by a subsequent filling device. Equipment is required. As a conventional work cutting device, there are a device using a screw system, a device using a star wheel system, and the like.

[0003] Here, a work cutting device using a screw system is such that a helical screw installed in parallel with a work conveyance path is rotated, and the work is conveyed in a form held by the screw groove of the helical screw. The work is separated and aligned at the pitch between the thread grooves at the end, that is, at a constant pitch.

[0004] In addition, a work cutting device using a star wheel method is to rotate a disk (star wheel) provided with pockets at equal intervals on a work transfer path, to transfer the work in a form held by the pockets, and to form a fixed pitch. The work is separated and aligned.

[0005]

Problems to be Solved by the Invention 1. There are the following problems in a conventional work cutting device using a screw system and a work cutting device using a star wheel system.

2. First, in a work cutting device using a screw system, a work is held and conveyed by a screw groove, so that the width of the screw groove must be adapted to the work. It is necessary to replace the screw with a screw corresponding to the size of the work.

[0007] In a work cutting device using a star wheel method, a work is held and transported in a pocket.
The size of the pocket must be suitable for the work, and every time the size of the work changes, it must be replaced with a star wheel corresponding to the size of the work.

As described above, in the work cutting apparatus according to the conventional example, every time the size of the work changes, parts need to be replaced each time, and the work efficiency is improved.

3. Further, in both the case of the screw system and the case of the star wheel system, a plurality of workpieces must be kept in a standby state when the workpieces are conveyed and carried into the cutting-out device from the carry-in conveyor. Must. Because the workpiece located at the most downstream end on the carry-in conveyor is loaded into the helical screw or the star wheel, the workpiece at the most downstream end can be successfully loaded unless the workpiece at the most downstream end is pressed by the rearward workpiece. Because there is no.

However, when a plurality of works are in a standby state in contact with each other and placed in a state where they are pressed against each other, the works may fall down, making it impossible to insert the works into the cutting device. . In particular, if the shape of the work is tapered toward the lower part, or if it is another unstable shape, the work is more likely to fall.

Therefore, in order to avoid such inconvenience, there is a case where a means is adopted in which the work is fitted into a jig and conveyed.

It is true that the work will not fall down if such measures are taken.

[0013] However, a jig corresponding to the form of the work is required, and when the form of the work changes, the jig must be replaced each time, and the work efficiency is improved.

[0014] In view of the drawbacks of the prior art, an object of the present invention is to provide a work cutting device which is excellent in work efficiency and does not require component replacement even if the size of the work is different.

[0015]

Means for Solving the Problems 1. In order to solve the above problems, the following means is employed in the work cutting apparatus according to the present invention.

2. Means adopted in the work cutting device according to claim 1 A side belt for holding and carrying the work is provided.

[0017] A control means for controlling the work transfer speed by the side belt is provided. The work transfer speed to the vicinity of the work cutout position by the side belt is made higher than the work transfer speed by the work loading conveyor.

3. Means adopted in the workpiece cutting device according to claim 2 A stopper is provided on the loading conveyor side.

A control means for controlling the supply of the work from the stopper to the side belt is provided.

4. Means adopted in the workpiece cutting device according to claim 3 The width between the side belts can be adjusted.

5. Means adopted in the work cutting device according to claim 4 The supply speed when cutting out the work from the side belt to the carry-out conveyor is controlled to be equal to the carrying speed of the carry-out conveyor.

6. Means adopted in the work cutting device according to claim 5 A measuring means for measuring a work width is provided.

An arithmetic means is provided for calculating the stop position of the workpiece based on the numerical value measured by the measuring means.

The rotation of the side belt is controlled so that the center of the work is placed at a predetermined position on the carry-out conveyor based on the numerical values calculated by the calculating means.

7. Hereinafter, the function of the solution will be described.

(1) In the work cutting device according to the first aspect, the work located at the downstream end of the carry-in conveyor is cut out to the carry-out conveyor by the side belt. At this time, control means for controlling the work transport speed by the side belt is provided, and the work is controlled by this control means.
It is transported at a speed higher than the transport speed by the loading conveyor. At this time, the works are placed on the carry-in conveyor at equal intervals. By taking such a measure, it is possible to cut out the work at a constant pitch on the carry-out conveyor without the work remaining on the carry-in conveyor and by controlling the work conveyance speed by the side belt. .

(2) Further, in the work cutting device according to the second aspect, the work stopped by the stopper provided on the carry-in conveyor side is cut out to the carry-out conveyor by the side belt. At this time, control means for controlling the supply of the work from the stopper to the side belt is provided. This is provided because if the next workpiece is delivered to the transport position by the side belt while the preceding workpiece is being transported at a high speed by the side belt, it is difficult to cut out the workpiece at a constant pitch. .

(3) In the work cutting device according to the third aspect, the width between the side belts is adjustable. This makes it possible to adjust the width between the side belts according to the width of the work, and to provide a work cutting device that does not require component replacement even if the size of the work is different.

(4) In the work cutting device according to the fourth aspect, the speed at which the work is cut out from the side belt to the discharge conveyor is controlled to be equal to the transport speed of the discharge conveyor. This makes it possible to prevent the work from falling over when the work is cut out on the carry-out conveyor.

(5) In the work cutting device according to the fifth aspect, a measuring means for measuring a work width is provided,
There is provided arithmetic means for calculating the stop position of the workpiece based on the numerical value measured by the measuring means. Furthermore,
The rotation of the side belt is controlled so that the center of the work is placed at a predetermined position on the carry-out conveyor based on the numerical values calculated by the calculation means.

When containers with different work widths are pinched and transported by the side belt, the positional relationship of the work at the cutting position is as follows.
As shown in FIG. That is, when the work A and the work B having different widths are nipped and transported by the side belt 5, the positions of the front ends of the work on the conveyor 6 side are aligned, but the center position of the work is shifted. In FIG. 2, the center position of the work B is located on the upstream side of the center position of the work A. If the work is conveyed by the unloading conveyor 6 in such a state, for example, when the work is filled with liquid or powder by the filling device, the position of the filling nozzle may not coincide with the center of the work. In some cases, filling may not be performed properly.

Therefore, in the work cutting device according to the fourth aspect, means for measuring the work width is provided, for example, on the way of conveyance by the side belt 5, and the work width is measured by the measuring means. Then, based on the numerical values measured by the measuring means, the stop position of the work is calculated by the calculating means. Specifically, for example, if the distance from the work width detection sensor 17 as the measuring means to the work cutout position is X mm and the radius of the work (or a half value of the work width) is Y mm, X
When the work is transported by −Y mm, the center of the work comes to a predetermined position regardless of the work width as shown in FIG.

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a use state diagram of a work cutting device according to the present invention. The work 2 conveyed on the carry-in conveyor 1 is conveyed to the stopper 3 in the vicinity of the delivery position while its traveling direction is regulated by the guide plate 7, and is stopped by the stopper 3. The work 2 delivered from the stopper 3 to the work cutting device 4 is transported while being sandwiched by side belts 5, and cut out on the unloading conveyor 6. Here, both the carry-in conveyor 1 and the carry-out conveyor 6 may use ordinary belt conveyors.

The side belts 5 are endless belt members, and are provided in a pair in parallel with the carry-in conveyor 1 and the carry-out conveyor 6 so as to hold the work 2 therebetween. The side belt 5 is preferably formed of an elastic body so that the work 2 can be efficiently transported and the work 2 is not damaged.

The side belt 5 is driven by a drive source 11. Here, a variable speed motor such as a servo motor is used as the drive source 11. Drive source 11
A drive pulley 9 is attached to the drive shaft 18 of the drive motor. A pulley 19 for hanging the side belt 5 is provided on the work cutting side of the side belt 5, that is, on the unloading conveyor 6 side. The driving pulley 9 and the pulley 19 are connected via a transmission means 20 such as a belt transmission mechanism, whereby the driving force is transmitted.

The driving source 11 drives not only the side belt 5 but also the stopper 3. That is, the driving source 1
The first driving force is transmitted to the driven pulley 10 fixed to the rotating shaft 13 via transmission means 12 such as a belt transmission mechanism. Then, the rotation of the rotating shaft 13 is transmitted to the stopper 3 via transmission means 15 such as a belt transmission mechanism.

Here, a clutch 16 is interposed between the rotating shaft 13 and the transmission means 15. This clutch 16
When the side belt 5 is rotating at high speed, that is, when the workpiece 2 is being transported at a speed higher than the transport speed by the unloading conveyor 6 or the loading conveyor 1, the stopper 3
Is controlled not to rotate. On the other hand, when cutting the work 2 from the side belt 5 to the unloading conveyor 6, the side belt 5 and the unloading conveyor 1 are rotated at a constant speed.
Is rotated by the clutch 16 so as to deliver the work 2 from the carry-in conveyor 1 to the cutting-out device 4.
Operate. In addition, the stopper 3 and the pulley 14 on which the side belt 5 is suspended are provided so as to rotate separately on the same axis.

A work width detection sensor 17 is provided in the middle of the side belt 5, and measures the width of the work 2 when the work 2 is conveyed by the side belt 5. Based on the numerical value measured by the work width detection sensor 17, the work 2
Is calculated.

In the present invention, the rotation of the drive source 11 is controlled to control the speed at which the side belt 5 transports the work. That is, the work 2 is transported at a high speed by the side belt 5, or the side belt 5 is rotated at the same speed as the unloading conveyor 6 to perform the constant speed cutting. The rotation of the stopper 3 is controlled by controlling the rotation of the drive source 11. Therefore, control means for performing such control is required, but such control means can be realized by software processing by a normal computer. Further, as a calculation means for calculating the stop position of the work 2, software processing by a normal computer is sufficient.

As a means for adjusting the width between the pair of side belts 5, the leg 8a and the leg 8b are formed to be bendable. That is, as shown in FIG. 1, the leg 8a to which the pulley 19 is attached and the leg 8b supporting the drive source 11 and the like are connected to bendable. Similarly, the leg 8a with the stopper 3 attached thereto and the clutch 1
The leg 8b supporting the 6 and the like is connected to bendable. Thus, the width between the side belts 5 can be adjusted by freely bending the leg 8a and the leg 8b.

In this embodiment, the stopper 3
Although a disk-shaped elastic body is used as the above, as another possible embodiment, a plate-shaped elastic body may be used. That is, the work is sandwiched between the pair of plate-like elastic bodies, the conveyance of the work 2 is stopped, and the plate-like elastic bodies are appropriately opened and closed by the control means in accordance with the rotation of the side belt 5. .

[0042]

As described above, according to the present invention, it is possible to provide a work cutting apparatus which is excellent in work efficiency and does not require component replacement even if the size of the work is different. .

[Brief description of the drawings]

FIG. 1 is a use state diagram of a work cutting device according to the present invention.

FIG. 2 is a schematic diagram showing a work transfer position relationship.

FIG. 3 is a schematic diagram showing a work transfer position relationship.

[Explanation of symbols]

 1 ··· Conveyor 2 ·· Work 3 ··· Stopper 4 ··· Work cutting device 5 ··· Side belt 6 ···· Conveyance conveyor 7 ··· Guide plate 8a, 8b ··· Leg 9 / ··· Driving pulley 10 ··· Driving Pulley 11, Drive source 12, Transmission means 13, Rotary shaft 14, Pulley 15, Transmission means 16, Clutch 17, Work width detection sensor 18, Drive shaft 19, Pulley 20, Transmission means

Claims (5)

[Claims] 1. A work cutting device for sequentially cutting out a work located at a downstream end of a work carried in by a carry-in conveyor to a carry-out conveyor, wherein a side belt for holding and carrying the work is provided. A control means for controlling a work transfer speed by the side belt; and a work transfer speed near the work cutting position by the side belt being higher than a work transfer speed by the work loading conveyor. . 2. A workpiece cutting device according to claim 1, wherein a stopper is provided on the side of the carry-in conveyor, and control means for controlling supply of the workpiece from the stopper to the side belt is provided. 3. The work cutting device according to claim 1, wherein the width between the side belts is adjustable. 4. The apparatus according to claim 1, wherein the speed at which the workpiece is cut out from the side belt to the unloading conveyor is controlled to be equal to the transport speed of the unloading conveyor.
Or the workpiece cutting device according to claim 3. 5. A method according to claim 1, further comprising: measuring means for measuring the width of the workpiece; calculating means for calculating a work stop position based on a numerical value measured by the measuring means; and a numerical value calculated by the calculating means. The workpiece cutting device according to claim 1, wherein the rotation of the side belt is controlled so that the center of the workpiece is placed at a predetermined position on the carry-out conveyor.