JPH04132006U - Compression device in packaging machine - Google Patents

Abstract

(57) [Summary] [Purpose] A rotating machine is used as a driving means for a compression device, and changes in the rotational speed of this rotating machine are extracted as a signal, and when this rotational speed reaches a predetermined value,
To accurately detect completion of compression. [Structure] A large number of stacked items W are transferred to a compression conveyor 4 consisting of an upper conveyor 2 and a lower conveyor 3.
In a packaging machine that compresses from a free height H to a packaging height L, the upper conveyor 2 is provided with a compression device 1, and this compression device 1 is driven by a servo motor connected to a lifting mechanism 5 of the upper conveyor 2. etc., and this rotating machine 6.
an encoder 7 connected to the encoder 7, a central processing unit 9 for processing the decrease in the cumulative speed of the encoder 7 into a speed command signal, and a main unit such as a servo amplifier for stopping the rotating machine 6 using the speed command signal B. It is characterized by comprising a controller 8.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is used in the technical field of packaging equipment, especially compression equipment in packaging machines. It is related to.

0002

[Conventional technology]

Packaging machines that handle packaged items such as newspapers, etc. Equipped with a compression device to make it smaller.

0003 This compression device is usually a compression conveyor or an elevator in which the compression flat plate is a cylinder, etc. By lifting and lowering the structure, the packaged items can be raised from the free stacking height. Compressed to a height suitable for packaging processing.

0004

[Problem that the idea aims to solve]

However, compression devices using a lifting mechanism such as a cylinder have a simple structure and can handle the packaged items at once. Although it is possible to press down with a certain force, it is difficult for the packaged item to reach the specified compression height. For example, the compression force of the compression conveyor can be detected to determine whether the compression is complete. Even if you try to speed up the compression work by checking the The descending mechanism cannot detect minute changes in the descending speed or descending height of the compression conveyor. There was a problem.

[0005] In light of these conventional circumstances, this idea was developed using rotation as a drive means for the compression device. At the same time, the changes in the rotational speed of this rotating machine are extracted as a signal, and this Completion of compression can be accurately detected when the rotational speed reaches a predetermined value. The purpose of this invention is to provide a compression device for a packaging machine.

[0006]

[Means to solve the problem]

The compression device in the packaging machine of this invention can A compression conveyor consisting of an upper conveyor and a lower conveyor allows packaging from free height. In a packaging machine that is compressed up to a height, a compression device is provided on the above-mentioned upper conveyor. , this compression device rotates a servo motor etc. connected to the lifting mechanism of the upper conveyor. Decrease in the integrated speed of the machine, the encoder connected to this rotating machine, and this encoder A central processing unit that processes the speed command signal into a speed command signal, and a It consists of a main controller such as a servo amplifier to stop the machine.

[0007]

[Effect]

The upper conveyor moves at a predetermined speed until the packaged item approaches the packaging height from the free height. The speed signal is fed back from the encoder to the central processing unit.

[0008] Then, when the upper conveyor reaches the packaging height, there is a significant deceleration change in the speed signal. is detected, and the change in this speed signal is processed by the central processing unit to stop the rotating machine. As a result, completion of compression of the packaged object can be quickly confirmed.

[0009]

【Example】

An embodiment of this invention will be described below with reference to the drawings.

0010 The compression device 1 shown in FIG. A compression conveyor 4 consisting of an upper conveyor 2 and a lower conveyor 3 (not shown) The upper conveyor 2 is provided in order to compress from the free height H to the packaging height L. It is something.

[0011] That is, the compression device 1 is a servo motor connected to the lifting mechanism 5 of the upper conveyor 2. A rotary machine 6 such as a rotary machine 6, an encoder 7 connected to the rotary machine 6, and an encoder 7 connected to the rotary machine 6. a central processing unit 9 for processing the decrease in the cumulative speed of 7 into a speed command signal B; Main controller 8 such as a servo amplifier for stopping the rotating machine 6 by speed command signal B It consists of

0012 The upper conveyor 2 has an endless belt 2b on the opposite pulley 2a (the front is the drive side). It is suspended on the lifting beam 10 via a frame (not shown). There is.

[0013] The lower conveyor 3 has an endless belt 3b on the opposing pulley 3a (the front is the drive side). It is suspended over the floor, fixed on the floor via a frame (not shown), and The package W is compressed by the lower conveyor 3 and the upper conveyor 2, and this compressed The product is sent to the next process (packaging process) in the same state.

[0014] The lifting mechanism 5 moves the upper conveyor 2 up and down with respect to the lower conveyor 3. The object to be packaged W is compressed, and the lifting beam 10 has a The connected elevating and lowering transmission means 11 and 12 and the input side of each of these elevating and lowering transmission means 11 and 12 (lower side) and an input connected to this intermediate shaft 13. It consists of a side transmission means 14 and an opposing beam guide 15.

[0015] The elevating and lowering transmission means 11 includes an endless belt 11b wrapped around a pair of pulleys 11a. In addition, the elevating and lowering transmission means 12 has an endless belt 12b wrapped around a pair of pulleys 12a. It is something that was given.

[0016] The input side transmission means 14 includes a sheave 13a provided on the intermediate shaft 13 and a sheave 13a of the rotating machine 6. It consists of a sheave 6a and an endless belt 16 stretched between the two.

[0017] The central processing unit 9 transmits the speed signal A fed back from the encoder 7 to the upper conveyor 2. If the speed command signal B corresponds to the normal downward movement of the main controller 8, is not input, and the speed signal A fed back from the encoder 7 is extremely slow. When the compression is completed, the speed command signal B is input to the main controller 8 and the rotating machine 6 and In both cases, the upper conveyor 2 is stopped.

[0018] Next, the operation of the above embodiment will be explained.

[0019] The central processing unit 9 is informed in advance that the speed signal A from the encoder 7 has decreased significantly. The output operation of the speed command signal B at that time is memorized.

[0020] First, when a start command signal from the main controller 8 is input to the rotating machine 6, the rotating machine 6 rotates. The movement is converted into a lowering movement of the upper conveyor 2 via the lifting mechanism 5. At this time , the upper conveyor 2 receives the speed command signal B from the central processing unit 9 when the rotating machine 6 receives the speed command signal B from the central processing unit 9. Since it is not there, it descends at a predetermined speed.

[0021] The upper conveyor 2 comes into contact with the packaged item W and compresses the packaged item W to the packaging height L. When the rotation speed of the rotary machine 6 is lowered to a position close to the rotation speed, the rotation speed of the rotary machine 6 gradually decreases.

[0022] Thereafter, the lowering operation of the upper conveyor 2 continues, and as the packaged items W are compressed, Therefore, when the rotational speed of the rotating machine 6 and the encoder 7 decreases significantly, this rotation The value of the speed signal A from the encoder 7 corresponding to the speed stored in the central processing unit 9 When reaching the speed signal A, the central processing unit 9 processes the speed signal A and converts it into a speed command signal B. The rotating machine 6 is stopped and the upper conveyor 2 is inputted to the main controller 8. Completion of the compression operation is confirmed.

[0023]

[Effect of the idea]

The compression device in the packaging machine of this invention is the upper part of the packaging machine that compresses the items to be packaged. The conveyor is connected to a rotating machine via a lifting mechanism, and the rotational speed of this rotating machine is The encoder connected to the machine returns the speed signal to the central processing unit. Then, this large change in the speed signal is processed into a speed command signal by the central processing unit, and this The speed command signal is input to the main controller and the rotating machine is stopped. This makes it possible to accurately and quickly detect the completion of compression of the packaged material, which increases the efficiency of compression work. It has the advantage of being faster.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main parts of a compression device.

FIG. 2 is a circuit diagram illustrating the control operation of the compression device.

[Explanation of symbols]

1 Compression device 2 Upper conveyor 3 Lower conveyor 4 Compression conveyor 5 Lifting mechanism 6 Rotating machine 7 Encoder 8 Main controller 9 Central processing unit B Speed command signal H Free height L packaging height W Item to be packaged

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Shinji Imaike Shinmaywako, 1-1 Shinmaywacho, Takarazuka City, Hyogo Prefecture Industrial Machinery Division, Industrial Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A packaging machine in which a large number of stacked items are compressed from a free height to a packaging height by a compression conveyor consisting of an upper conveyor and a lower conveyor, wherein the upper conveyor includes a compression device. The compression device includes a rotating machine such as a servo motor connected to the lifting mechanism of the upper conveyor, an encoder connected to the rotating machine, and a system for processing a decrease in the cumulative speed of the encoder into a speed command signal. 1. A compression device for a packaging machine, comprising a central processing unit and a main controller such as a servo amplifier for stopping the rotating machine in response to the speed command signal.