JP6933135B2 - Long member cutting system - Google Patents

Description

The present invention relates to a long member cutting system that cuts a long member to a predetermined length.

A standard-length cutting device that continuously cuts a metal pipe material such as aluminum to a predetermined length is known (Patent Document 1). In this device, a long pipe material is fed to a fixed length, then cut, and this is repeated to cut the pipe material to a desired length. The pipe material is cut while the pipe material is held by a pair of clampers arranged in front of and behind the cutting blade, and the standard length feed of the pipe material is performed by moving a chuck holding the rear end portion of the pipe material. Further, in the fixed length feed, it is necessary to maintain the posture of the pipe material in the front-rear direction. Therefore, in Patent Document 1, the tip position of the pipe material is guided by a support pin inserted in the tip portion of the pipe material. Further, the pipe material cut to a predetermined length is conveyed to the next work process by the take-out device.

Special Fair 08-018176 Gazette

However, when the supplied pipe material or the residual material after cutting contains a pipe material shorter than the specified length, it is necessary to manually remove the non-standard member that is less than the specified length in the conventional standard-length cutting device. ..

An object of the present invention is to detect a member having a predetermined length in a system for cutting a long member to a predetermined length.

The long member cutting system according to the first aspect of the present invention is provided with a transport means for transporting the long member, a cutting means for cutting the long member, and a downstream side of the cutting means, and the transport. The holding means is movably arranged in the front-rear direction of the means and has a chuck for holding the tip of the long member to be cut, and the cutting means is sandwiched between the holding means and the holding means so as to be movable in the front-rear direction. A pushing means that is arranged and pushes the long member into the chuck, a detecting means for detecting the length of the long member, and a control means that controls the operation of the cutting device and the holding means. The detection means includes a measurement sensor that measures the distance to the rear end of the long member to be transported, an elevating mechanism that raises and lowers the measurement sensor above and below the transfer surface, and above the measurement sensor. A presence / absence detection sensor for detecting the presence or absence of a long member is provided, and the control means pushes the long member into the holding means by the pushing means, and then determines the long member by the holding means. It is moved forward by a distance, the long member is cut by the cutting means, and the elevating means is operated based on the detection result of the presence / absence detection sensor, and the length of the long member detected by the measurement sensor and the cutting. It is characterized in that whether or not cutting is possible is determined based on the planned length, and the operations of the cutting means and the holding means are controlled.

In the first invention, the long member cutting system according to the second aspect of the present invention discharges the long member to remove the long member from the line when it is determined that the long member is less than a predetermined length. It is characterized by having means.

According to the present invention, in a system for cutting a long member to a predetermined length, a member having a predetermined length or less can be detected.

It is a side view which shows the structure of the long member cutting system which is one Embodiment of this invention. It is a schematic diagram which shows a series of operations before and after the cutting process of a long member in time series. It is an enlarged view of the upstream end of the alignment conveyor. It is an enlarged view which shows the structure of the chuck of a holding / moving device. It is a front view which looked at the nonstandard member discharge conveyor from the transport direction.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a configuration of a long member cutting system according to an embodiment of the present invention.

The long member cutting system 10 of the present embodiment is a system that cuts a long member M such as an aluminum sash to a predetermined length. In the long member cutting system 10, for example, a plurality of long members M are placed on the transport roller 12R of the long member supply conveyor (conveyor means) 12 in multiple rows (for example, four rows) with their longitudinal directions oriented in the transport direction. It is conveyed and transferred to the alignment conveyor 14.

The alignment conveyor 14 moves the long member M to the downstream side by rotating the transport roller 14R. At the downstream end of the alignment conveyor 14, a head stopper 24S that can be raised and lowered from below the transport surface onto the transport path is provided. The head stopper 24S is a plate member extending along the width direction of the transport path, and when lifted, blocks the path of the long member M so as to vertically cross the transport path. That is, in the state where the head stopper 24S is lifted, the tip of the long member M advanced by the transport roller 14R comes into contact with the head stopper 24S and stops in a state where the tip positions are aligned horizontally.

A measurement sensor (detection means) 14S that measures up to the long member M is arranged on the upstream side of the alignment conveyor 14. The measurement sensor 14S can measure, for example, the distance to the rear end of the long member M. For example, the measurement sensor 14S measures the distance to the long member M stopped by the leading stopper 24S and the rear end of the long member M at the cutting position described later by a laser or the like irradiated toward the downstream side in the transport direction. do. That is, as will be described later, the measurement sensor 14S is used to determine whether or not the long member M to be supplied has a length less than a predetermined length.

A pushing device (pushing means) 16 is arranged above the alignment conveyor 14. The pushing device 16 includes a clamp 16C that can reciprocate along a linear guide 16G extending in the transport direction. The clamp 16C grips the long member M mounted on the transport roller 14R, and transfers the long member M to the cutting device (cutting means) 18 arranged on the downstream side of the alignment conveyor 14 to the linear guide 16G. Move along.

The cutting device 18 has a table-shaped workbench 18T, a rotary blade 20 that protrudes from a slit formed in the workbench 18T, vertically crosses a transport path, and cuts each long member M, and rotates when the long member M is cut. A pressing device 22 that presses the long member M on both sides of the blade 20 and maintains its posture is provided. The pressing device 22 includes an upper pressing 22U that presses the long member M from above and a horizontal pressing 22S that presses the long member M from the side.

Further, between the downstream end of the alignment conveyor 14 and the leading stopper 24S, a lifting roller 24R that is in close contact with both and can be raised and lowered on the transport path is arranged. When the long member M is pulled onto the cutting device 18 by the clamp 16C, the lifting roller 24R slightly lifts the long member M so that the long member M is not rubbed on the work table 18T and is not scratched. be able to.

A non-standard member discharge conveyor (discharge means) 26 for discarding a long member M (non-standard member) having a length less than a predetermined length from the line is arranged on the downstream side of the cutting device 18, and further downstream of the long member M (non-standard member). A cutting member discharge conveyor 28 for sending the long member M cut to a predetermined length to the next process is arranged. In the section extending from the nonstandard member discharge conveyor 26 to the upstream side of the cutting member discharge conveyor 28, the long member M is held on the nonstandard member discharge conveyor 26 or on the cutting member discharge conveyor 26. A holding / moving device (holding means) 30 that moves upward is arranged.

The holding / moving device 30 includes a chuck 30C for gripping the tip of each long member M. Each chuck 30C is arranged at a position facing each clamp 16C of the pushing device 16 with the rotary blade 20 sandwiched between them, and the tip of each long member M is pushed into the chuck 30C by the pushing device 16. The chuck 30C can reciprocate along the linear guide 30G extending in the transport direction, and the long member M to be held can be moved downstream along the transport path to the top of the cutting member discharge conveyor 28.

The holding / moving device 30 determines whether or not the supplied long member M is less than a predetermined length, and moves the holding long member M to the nonstandard member discharge conveyor 26 and the cutting member. It can be switched between the discharge conveyor 28 and the discharge conveyor 28. That is, when it is determined that the long member M is longer than the predetermined length, the chuck 30C conveys the long member M to the cutting member discharge conveyor 28, and when it is determined that the length is less than the predetermined length. Only conveys to the non-standard member discharge conveyor 26.

The non-standard member discharge conveyor 26 includes a plurality of transfer rollers 26R, and a non-standard member discharge guide 26G that can be raised and lowered from below the transfer surface to above the transfer surface is provided between some of the transfer rollers 26R. On the side of the non-standard member discharge conveyor 26, a pusher 26P for extruding the non-standard member on the non-standard member discharge conveyor 26 laterally from the transport path and discarding the non-standard member discharge conveyor 26 is arranged.

The non-standard member discharge guide 26G is retracted below the transport surface when the holding / moving device 30 transports a long member M (member having a predetermined length or more) conforming to the standard to the cutting member discharge conveyor 28. .. That is, the long member M held by the chuck 30C is conveyed onto the cutting member discharge conveyor 28 by the holding / moving position device 30.

On the other hand, when the long member M held by the chuck 30C is determined to be a nonstandard member (a member having a length less than a predetermined length) based on the determination of the measurement sensor 14S, and the nonstandard long member M is discarded by the pusher 26P, With the non-standard member discharge guide 26G retracted below the transport surface, the long member M is transported onto the transport roller 26R of the non-standard member discharge conveyor 26 by the holding / moving device 30. Next, the non-standard member discharge guide 26G is raised, and the non-standard member on the transport roller 26R is slightly lifted from the transport roller 26R by the non-standard member discharge guide 26G. The non-standard long member M on the non-standard member discharge guide 26G is pushed out to the side of the transport path by the pusher 26P, and the non-standard long member M pushed out by the pusher 26P is on the opposite side of the pusher 26P across the transport path. It is disposed of in the dust box 26B via the provided slope 26S (see FIG. 5).

The long member M after cutting transferred to the cutting member discharge conveyor 28 by the holding / moving device 30 is carried out to the downstream side by the transport roller 28R provided on the cutting member discharge conveyor 28, and is carried out to the subsequent processing step. Is sent. The series of operations by the measurement sensor 14S, the pushing device 16, the cutting device 18, the lifting roller 24R, the head stopper 24S, the nonstandard member discharge conveyor 26, and the holding / moving device 30 described above are controlled by the control device (control means). ) 32.

2 (a) to 2 (c) show a pushing device 16, a leading stopper 24S, a lifting roller 24R, a cutting device 18, when the supplied long member M is determined by the control device 32 to be a non-standard member. It is a schematic diagram which shows the series of operations before and after the cutting process of a long member M executed by using the holding / moving device 30 in time series.

In FIG. 2A, the leading stopper 24S is raised, and the tip of the long member M conveyed by the conveying roller 14R is locked by the leading stopper 24S to perform alignment. In the same state, the clamp 16C of the pushing device 16 grips the side surface near the tip of each long member M, and in this state, reaches the rear end of the long member M supplied by using the measurement sensor 14S. The distance is measured. That is, it is determined whether or not the length of the long member M supplied to the alignment conveyor 14 is equal to or greater than a predetermined value.

In FIG. 2B, the leading stopper 24S is lowered and retracted under the transport path, and the lifting roller 24R is slightly lifted onto the transport surface. Then, the pushing device 16 moves the long member M in the transport direction and pushes the tip thereof into the chuck 30C, and the tip of the long member M is held by the chuck 30C. At this time, the rotary blade 20 is retracted to the side of the transport path, and the chuck 30C is located on the most upstream side, that is, slightly upstream from the cutting position by the rotary blade 20.

In FIG. 2C, the clamp 16C releases the grip of the long member M, and the chuck 30C holding the tip of the long member M corresponds to the cutting length L of the long member M along the linear guide 30G. It is moved forward (downstream side) by a predetermined distance. Then, the lifting roller 24R is lowered below the transport surface. After that, before and after the cutting position, the long member M is restrained by the pressing device 22, and the position is fixed to the work table 18T. Then, in this state, the long member M is cut by the rotary blade 20.

In FIG. 2D, the cutting of the long member M is completed, and the rotary blade 20 is returned to the original retracted position. In FIG. 2D, the cut long member M is a member conforming to the standard, and is moved onto the cutting member discharge conveyor 28 by the holding / moving device 30. When the transfer of the long member M onto the cutting member discharge conveyor 28 is completed, the chuck 30C holding the tip of the long member M is released. After that, the chuck 30C is slightly raised to avoid interference with the long member M, and is moved upstream toward the position shown in FIG. 2A. Similarly, when the holding / moving device 30 transfers the long member M onto the nonstandard member discharge conveyor 26, the chuck 30C is slightly raised after opening the long member M. It is moved upstream toward the position 2 (a).

In a state where the tip of the long member M located upstream of the rotary blade 20 is located at the cutting position, the control device 32 measures the distance to the rear end of the remaining long member M using the measurement sensor 14S. , It is determined whether or not the length of the residual material is equal to or greater than a predetermined value. When the chuck 30C returns to the position shown in FIG. 2A, the clamp 16C grips the long member M again and moves to the downstream side, and as shown in FIG. 2B, the tip of the long member M is reached. Is pushed into the chuck 30C, and the same process is repeated thereafter.

FIG. 3 is an enlarged view of the upstream end of the alignment conveyor 14, and a detailed description of the configuration of the sensor used in the detection process of the present embodiment will be described.

The measurement sensor 14S that measures the distance to the rear end of the long member M includes, for example, an elevating mechanism 141. When measuring the distance to the rear end of the long member M, the elevating mechanism 141 raises the measurement sensor 14S from below the transport surface and arranges it near the transport surface. On the other hand, when the long member M is supplied from the long member supply conveyor 12 to the alignment conveyor 14, the measurement sensor 14S is lowered so as not to obstruct the course thereof, and is retracted below the transport surface.

Further, at the upstream end of the alignment conveyor 14, a sensor 142 for detecting whether the long member M exists on the upstream end of the alignment conveyor 14 is provided. The sensor 142 is used, for example, when the long member M is being transferred from the long member supply conveyor 12, or when the long member M is long and its rear end reaches the upstream end of the conveyor 14 and extends. , Detect the state. While the long member M is detected by the sensor 142, the measurement sensor 14S is maintained in a retracted state below the transport surface.

4A and 4B are enlarged views showing the configuration of the chuck 30C of the holding / moving device 30, where FIG. 4A is a plan view and FIG. 4B is a side view. The configuration of the chuck 30C of the present embodiment will be described with reference to FIG.

The chuck 30C is composed of a pair of gripping pieces that sandwich a long member M inserted between them from both sides, and in the center thereof, a stopper 300, a head detection switch 302 provided at the head of the stopper 300, and a head detection switch 302. A touch sensor 304 connected to is provided.

The head detection switch 302 can reciprocate with respect to the stopper 300 in the transport direction, and is urged upstream by an urging member (not shown). When the long member M is inserted into each of the chucks 30C by the pushing device 16 and the tip thereof presses against the head detection switch 302, the head detection switch 302 is pushed to a predetermined position in contact with the stopper 300. At this time, the touch sensor 304 detects that the tip of the long member M has been pushed to the specified position of the chuck 30C. Based on the detection signal, the control device 32 closes the chuck 30C, grips the tip of the long member M from both sides by the chuck 30C, and holds the long member M.

FIG. 5 is a front view of the non-standard member discharge conveyor 26 of the present embodiment as viewed from the transport direction. With reference to FIG. 5, the disposal treatment of the non-standard member in the present embodiment will be described in more detail.

When the distance to the rear end of the long member M is measured by the measuring sensor 14S, the distance to the cutting position where the leading stopper 24S and the rotary blade 20 are provided is known, so the length of the long member M is calculated. can. The control device 32 determines whether or not the calculated length of the long member M is shorter than a predetermined value (specified value), and if it is short, the long member M is a member or a residual material that does not meet the specified value. Judged as (non-standard member).

When the long member M determined to be a nonstandard member by the chuck 30C is transferred onto the transport roller 26R, the control device 32 raises the nonstandard member discharge guide 26G from between the transport rollers 26R to raise the long member. The M is separated from the transport roller 26R. Then, the pusher 26P is moved in the width direction orthogonal to the transport direction, and the long member M mounted on the nonstandard member discharge guide 26G is pushed out to the side where the slope 26S is provided. As a result, the long member M determined to be a nonstandard member slides down the slope 26S and is thrown into the dust box 26B arranged ahead of the slope 26S.

As described above, according to the present embodiment, in a system for cutting a long member to a predetermined length, a member having a length less than the predetermined length can be detected as a nonstandard member. Further, according to the present embodiment, the non-standard member can be automatically discharged from the line and discarded based on the detection information.

10 Long member cutting system 12 Long member supply conveyor (conveyor means)
14 Alignment Conveyor 14S Measuring Sensor 16 Pushing Device (Pushing Means)
16C Clamp 18 Cutting device 18T Worktable 20 Rotary blade 22 Holding device 24S Top stopper 26 Non-standard member Discharge conveyor (Discharging means)
26B Dust Box 26G Non-standard Material Discharge Guide 26S Slope 28 Cutting Member Discharge Conveyor 30 Holding / Moving Device (Holding Means)
30C chuck 32 control device (control means)
M long member

Claims (2)

A transport means for transporting long members and
A cutting means for cutting the long member and
A holding means provided on the downstream side of the cutting means and movably arranged in the front-rear direction of the carrying means to hold the tip of a long member to be cut.
A pushing means that is movably arranged in the front-rear direction so as to face the holding means with the cutting means sandwiched in between, and holds the long member and pushes it into the chuck.
A detection means for detecting the length of the long member and
The cutting device and the control means for controlling the operation of the holding means are provided.
The detection means includes a measurement sensor that measures the distance to the rear end of the long member to be transported, an elevating mechanism that raises and lowers the measurement sensor above and below the transport surface, and a long member above the measurement sensor. Equipped with a presence / absence detection sensor to detect the presence of
The control means pushes the long member into the holding means by the pushing means, then moves the long member forward by a predetermined distance by the holding means, and cuts the long member by the cutting means. ,
The elevating means is operated based on the detection result of the presence / absence detection sensor, and whether or not cutting is possible is determined based on the length of the long member detected by the measurement sensor and the planned cutting length. A long member cutting system characterized by controlling movement. The long member cutting system according to claim 1, further comprising a discharge means for removing the long member from the line when the long member is determined to be less than a predetermined length.

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