JPH02300008A - Transfer device - Google Patents

Abstract

PURPOSE:To enable fast feeding without generation of damage in products in a transfer device for continuous manufacturing line by dividing a transfer means into several groups in the transfer direction, performing respective connections to a single variable speed motor via a clutch, and performing changing-over to the line speed, fast feed speed and free conditions at every group. CONSTITUTION:When a sensor PS1 is operated after an article to be transferred is fed into a first gauge table 1, a control circuit C accelerates the speed of a mortor M1 to make the speed of a transfer part 10 line speed, and it is made to be a fast feed speed at the time of disappearance of detection signal of the sensor PS1 or at the time of completion of cutting inter-running cutter 3. The clutch of group 1 is released when the sensor PS1 detects the next article to be transferred. When a sensor PS2 is operated, the clutch 11 of the rotary transfer part 10 is released. The operation is sequentially repeated in the respec tive groups 3, 4 and second gauge table. It is thus possible to enable fast feeding without damaging products.

Description

[Detailed description of the invention] [Industrial application field]

TECHNICAL FIELD The present invention relates to a conveying device used in a manufacturing line for articles, particularly a manufacturing line for continuously manufactured articles.

[Prior Art 1] In a conveying device such as a roller conveyor in an article manufacturing line, each part usually conveys at the same speed, so-called line speed. However, in cases where articles are manufactured continuously and there is a running cutting machine that cuts the articles on the production line, if the conveying device is flowing at line speed, the cut articles and the articles Since the items may be conveyed with the space between them clogged, it is recommended to set the conveyance speed in this area faster than the line speed and perform fast forwarding to create space between the items. is being carried out. [Problem to be Solved by the Invention] In the above case, a situation arises in which the article, which is flowing at the line speed because the cutting of the article has not yet been completed, is attempted to be fed at a high conveyance speed. However, by increasing the difference in conveyance speed between the front and rear stages of the inter-travel cutting machine, inter-travel cutting Itl? It would be possible to increase the distance between the items cut by the machine. Some items may be damaged due to the difference in speed. This is particularly likely to be a problem when the article is long, since the state where the speed difference exists will last for a long time. The present invention has been made in view of these points, and its purpose is to provide a conveying device that can perform rapid forwarding to convey articles at a speed faster than the line speed, and that does not damage the articles. It is on offer.

[Means to solve the problem]

Therefore, the present invention divides a plurality of conveyance means lined up along the conveyance direction into a plurality of groups, and connects each group of conveyance means to a single motor with variable speed through a clutch. The conveyance means can be freely set to three states for each group: line speed, rapid feed speed, and free state by releasing the clutch, and a means for detecting the transported article is disposed at the front stage of the conveyance means of each group,
The present invention is characterized in that it is provided with a control means that sets the operating state of the transport means for each group to one of the above three states based on signals from these detection means and the preceding stage transport device, processing machine, etc. There is. [Operation 1] According to the present invention, when the conveyed article approaches the conveying means, the line speed is applied, once the conveyed article has been completely transferred onto the conveying means, the rapid forwarding speed, and during the rapid forwarding, the next When an article to be conveyed reaches a conveyance means, by releasing the clutch, the conveyance means belonging to the group into which the new article to be conveyed is placed in a free state, and each conveyance means is moved by a single motor. Even though the transport means of the group of ponds is in a fast forward state, it can be in a different operating state. [Example] The present invention will be described in detail below based on an illustrated example. The illustrated example shows an example disposed in a production line for a sandwich panel made of a hard polyurethane resin and a steel plate. A first gauge table 1 and a second gauge table 2, which are disposed downstream of a running cutter 3 for cutting the sandwich panel described above, serve as conveying devices, respectively. Of both gauge tables 1 and 2 arranged in series, the first gauge table 1 located on the side of the inter-travel cutting machine 3 conveys a rotary conveyance unit 10 such as a roll that conveys the conveyed article by its rotation. It is formed as a large number of pieces lined up along the direction, and is divided into four groups ■~■ of 5 to 6 pieces in order of the conveyance direction, and furthermore, each rotary conveyance section 10 has a clutch 11, respectively. The motor M1 is individually connected to the motor M1 via the motor M1. The second gauge table 2 similarly includes a plurality of rotary conveyance units 2.
0 is divided into three groups ■ to ■ along the conveyance direction, and each rotary conveyance section 20 is connected to a clutch 21.
are individually connected to motor M2 via. Optical sensors PS1-PS1 for detecting the transported articles are installed in the M stages of each group ■ to ■ and the latter stage of group
PS is installed. The control circuit C to which these sensors PS1 to PS are connected is connected to the two variable speed motors M, M2 via motor drive circuits MD, MD, respectively. At the same time, each clutch 11.21 is connected via clutch drive circuits CD1 to CD7 for each of the groups (1) to (2). Thus, each rotary conveyance section 10.20 in the first gauge table 1 and the second gauge table 2. When there is no article to be conveyed, all the clutches 11 and 21 are connected, so the line speed is operating at an initial speed Vs that is slower than 0, but the article to be conveyed is on the side of the first gauge table 1. By being sent to
When the sensor PS1 detects an article to be transported, the control circuit C increases the speed of the motor M1 to synchronize the rotary transport section 10 with the line speed Vo. Therefore, the article to be transported is transported on the first gauge table 1 at a line speed of 0. However, if the running cutting machine 3 disposed in the previous stage issues a cutting completion signal, or if the end of the transported article passes through the installation part of the sensor P S +, the sensor PS
When the detection output of the conveyed article by M1 disappears, the control circuit C further increases the speed of the motor M1 to move each conveyance section 10 at a fast forward speed vh. Then, the transported article is connected to the sensor P.
After passing Ss, the control circuit C returns the speed of each rotary conveyance section 10 to the line speed Vo. However, if the sensor PS1 detects the next article to be conveyed during this fast forwarding and at 11f when the article to be conveyed finishes passing through the first gauge table 1, the control circuit C will control the clutch of the rotary conveyance unit 10 of group 11 to be in a free state. Then, if the sensor PS2 detects the transported article, the clutch 1 of the rotary transport section 10 of group
1 is opened, and further sensor PS is 'Il! , when a conveyed article is detected, the clutch 11 of the rotary conveyance section 10 of group (2) is released.Although the fast forwarding state is maintained, when a new conveyed article is detected, the clutch 11 of the rotary conveyance section 10 of group (2) is released. This is to ensure that there is no speed difference. When the fast-forwarded article passes through to the second gauge table 2 side and a new article has not yet been cut, the full-rotation conveyor 10 is moved at the line speed VO, and The transported articles are transferred to the second gauge table 2.
If a cutting completion signal or a passing confirmation signal from the sensor PS is issued for the next conveyed article before it passes to the side,
The full-rotation conveyor 10 is moved at a rapid traverse speed vh. FIG. 2 shows a flow chart 1.about., and FIG. 4 shows a time chart 1. of operations for each group. Basically, the second gauge table 2 is connected to the first gauge table 1, as shown in the flowchart of FIG. 3(a).
It is controlled to synchronize with the speed of the rotary conveyance section 10 of the final group (2). In other words, the rotary conveyance section 20 of the second gauge table 2 which is conveying the transported article has the rapid feed speed v
When moving at h, rapid traverse speed vh, line speed V
. When it is moving at line speed Vo, it is moved at line speed Vo. Note that the line speed becomes Vo when the length of the conveyed article is longer than the first gauge table 1 and the sensor PS5 detects the conveyed article before the cutting is completed.
Therefore, when the length of the transported article is shorter than the length of the first gauge table 1, the second gauge table 2 will not reach the line speed Vo. Even if the line speed is 0, the first gauge table 1 and the second gauge table 2
When the sensor PS located between is off, that is,
When there is no article to be conveyed between both gauge tables 1 and 2 and there is an article to be conveyed on the second gauge table 2, the second gauge table 2 moves at the rapid feed speed vh.
It moves. Then, when the conveyed article is moving at the line speed Vo, when the conveyed article finishes passing through the sensor PS, the speed is increased to the fast forwarding speed Vh. Furthermore, if the sensor PS detects the conveyed article being moved at the line speed Vo while moving at the rapid feed speed vh, the control circuit C is activated as shown in the flowchart of FIG. Similarly, sensor PSs and sensor PS disengage the clutch 21 of the rotary conveyance section 20 of group (■). When detecting an article to be transported, the clutches 21 of the rotary transport sections 20 of groups (2) and (2) are respectively disengaged. For this purpose, the rotary conveyance section 20 is driven at a rapid feed speed vh.
However, since cutting has not yet been completed, the cutter does not come into contact with the transported article moving at the line speed VO. Then, when the disconnection completion signal is input, the clutch 21 is engaged and the fast forwarding speed becomes vh. .

【Effect of the invention】

As described above, in the present invention, when the article to be conveyed approaches the conveying means, the line speed is applied, once the article to be conveyed is completely transferred onto the conveying means, the rapid traverse speed is applied, and during the rapid traverse, the next If the article to be transported approaches the transport means,
The conveying means belonging to the group into which this new conveyed article has approached is set in a free state by releasing the clutch,
Although each conveyance means is driven by a single motor, it can be operated in a different operating state from the conveyance means of other groups that are in a rapid traverse state, and for this reason, the speed is lower than the line speed. In addition to being able to carry out fast forwarding to convey articles at a high speed, the conveying means driven at this fast speed does not come into contact with the articles to be conveyed and damage the articles to be conveyed.

[Brief explanation of drawings]

Figure 1 is a schematic layout diagram of one embodiment of the present invention, Figures 2 and 3
The figure is a flowchart showing the same operation as above, and FIG. 4 is a time chart 1, in which 1 is a first gauge table, 2 is a second gauge table, 10 and 20 are rotary conveyance units, and 11.2
1 is the clutch, ■~■ is the group, C is the control circuit, PS
I to PS indicate sensors. Agent Patent Attorney Ishi 1) Chief Figure 7 3

Claims (1)

[Claims] (1) A plurality of conveyance means lined up along the conveyance direction are divided into a plurality of groups in the conveyance direction, and the conveyance means of each group are respectively connected to a single variable speed motor via a clutch, The conveying means can be set to three states for each group: line speed, rapid traverse speed, and free state when the clutch is released, and means for detecting the transported article is arranged at the front stage of the conveying means of each group, and these detection means and the front stage Based on signals from conveyance equipment, processing machines, etc.
1. A conveying device comprising a control means for setting the operating state of the conveying means to one of the three states for each group.