JP2022079399A - Method for conveying plural lines of workpieces and conveyance device therefor - Google Patents

Abstract

To provide a method for conveying plural lines of workpieces realizing the cost reduction of plural lines of conveyance rollers, and a conveyance device therefor.SOLUTION: In a conveyance method in which plural lines of workpieces 30 are conveyed in a conveyance direction F while supporting them by plural lines of conveyance rollers 20, workpieces 31 to 35 in the plural lines of workpieces 30 are arranged so as to be separated in a width direction T crossed with the conveyance direction F, the conveyance rollers 21 to 26 in the plural lines of conveyance rollers 20 are arranged so as to be separated in the conveyance direction F, and the plural lines of workpieces 30 are conveyed in the conveyance direction F at a misaligned disposition in which any workpiece in the plural lines of workpieces 30 is misaligned in the conveyance direction F against the other workpiece located next to the any workpiece.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for transporting a multi-row workpiece and a transport device.

Patent Document 1 discloses a roller hearth furnace in which a plurality of low dust generation rollers (transport rollers) are arranged along a transfer direction. Patent Document 2 discloses a heat retaining furnace in which a long rolled material (work) is oscillated by an in-furnace transfer table (conveyor roller). Patent Document 3 discloses a continuous heating furnace in which a large number of long steel materials (workpieces) are charged and heated in parallel.

Japanese Unexamined Patent Publication No. 2013-100963 Japanese Unexamined Patent Publication No. 9-296220 Jitsukaisho 58-15645

When the multi-row work is transported while being supported by the multi-row transport roller, the load on the multi-row transport roller by the multi-row work varies depending on the positional relationship between the multi-row work and the multi-row transport roller. 11 and FIG. 12 will be referred to.

11 and 12 are a plan view and a side view of the transfer device 7 according to the prior art, respectively. As shown in FIGS. 11 and 12, consider a case where the ends of the multi-row work 30 are aligned and arranged in a plane view. 11 and 12 show a plurality of works 30 (work 31 to 35) when they are transported in the transport direction F while being supported by the multi-row transport rollers 20 (convey rollers 21 to 26) arranged at equal intervals. The load on the multi-row transfer roller 20 by the row work 30 is schematically shown. In the multi-row work 30 (works 31 to 35), the downstream end and the upstream end in the transport direction F are simply referred to as a downstream end and an upstream end, respectively. As an example for the sake of clarity, the multi-row work 30 shown in FIGS. 11 and 12 has a length corresponding to four spans of the multi-row transfer roller 20, and the downstream end of the multi-row transfer roller 30 is the first transfer roller 21. The state immediately before the upstream end of the multi-row work 30 is separated from the fifth transport roller 25 is shown.

In FIG. 11, 1.5w is for one span on the downstream side (since the downstream end of the multi-row work 30 is immediately before being supported by the first transport roller 21, it is considered to be one span for convenience thereafter) and upstream. This means that a load of 1.5 spans, which is the sum of 0.5 spans on the side, is applied to the second transfer roller 22. Further, in 1.0w, the load for one span, which is the sum of 0.5 spans on the downstream side and 0.5 spans on the upstream side, is applied to each of the third transfer roller 23 and the fourth transfer roller 24. It means to be done. Further, 0.5w means that the load for 0.5 span on the upstream side is applied to the fifth transport roller 25 (the upstream end of the multi-row work 30 is separated from the fifth transport roller 25). Since it is just before, it is considered to be 0.5 span for convenience.) Then, as shown in FIG. 12, instead of the load of the multi-row work 30 being applied to the first transfer roller 21, the total load of the multi-row work 30 is 7.5 w on the second transfer roller 22. The load is applied.

In the flush alignment arrangement of the multi-row workpieces 30 shown in FIGS. 11 and 12, a total load of 5.0 w is applied to each of the third transfer roller 23 and the fourth transfer roller 24, but for example, the maximum. A total load of 7.5w is applied to the second transfer roller 22. That is, in the embodiment shown in FIGS. 11 and 12, the largest total load is applied to the second transfer roller 22. If a high-strength multi-row transfer roller 20 is used so as to be able to withstand such a load, the cost increases due to the increase in diameter and thickness of the multi-row transfer roller 20. Further, when the multi-row transport roller 20 is used in a heat treatment apparatus that heat-treats at a high temperature, the cost is increased by using the multi-row transport roller 20 made of a heat-resistant material.

Therefore, an object of the present invention is to provide a transfer method and a transfer device for a multi-row work, which realizes a cost reduction of a multi-row transfer roller.

In order to solve the above problems, the method for transporting a multi-row work according to one aspect of the present invention is:
In a transport method in which a multi-row workpiece is supported by a multi-row transport roller and transported in the transport direction.
The workpieces in the plurality of rows of workpieces are arranged apart from each other in the width direction intersecting the transport direction.
The transport rollers in the multi-row transport rollers are arranged apart from each other in the transport direction.
A work in the multi-row work is misaligned in the transport direction with respect to another work located next to the work, and the multi-row work is transported in the transport direction. It is characterized by that.

According to the present invention, the transport in the misaligned arrangement distributes the load on each transport roller by the multi-row workpieces rather than the transport in which the multi-row workpieces are arranged flush with each other in a plan view. The cost of the roller can be reduced.

It is a figure schematically explaining the processing system including the transfer apparatus which concerns on 1st Embodiment. FIG. 3 is a cross-sectional view taken along the line II-II of FIG. It is a top view of the transport device in the processing system shown in FIG. It is a side view of the transport device shown in FIG. It is a top view of the arrangement apparatus which concerns on 2nd Embodiment. It is a top view of the transport device arranged on the downstream side of the array device shown in FIG. It is a side view of the transport device shown in FIG. It is a top view of the arrangement apparatus which concerns on 3rd Embodiment. It is a top view of the transport device arranged on the downstream side of the array device shown in FIG. It is a side view of the transport device shown in FIG. It is a top view of the transfer device which concerns on the prior art. It is a side view of the transport device shown in FIG. It is a perspective view of the arrangement apparatus which concerns on 1st Embodiment. It is a figure explaining the operation of the arrangement apparatus shown in FIG.

Hereinafter, embodiments of the transport device 7 according to the present invention will be described with reference to the drawings.

[First Embodiment]
The transport device 7 according to the first embodiment will be described with reference to FIGS. 1 to 4, 13 and 14. FIG. 1 is a diagram schematically illustrating a processing system 1 including a transfer device 7 according to the first embodiment. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. FIG. 3 is a plan view of the transfer device 7 in the processing system 1 shown in FIG. FIG. 4 is a side view of the transport device 7 shown in FIG. FIG. 13 is a perspective view of the array device 3 according to the first embodiment. FIG. 14 is a view illustrating the movement of the array device 3 shown in FIG. 13 (the left side view is a side view, and the right side view is a top view). In FIG. 14, (A) shows how the multi-row work 30 is conveyed, and (B) shows that the positioning unit 10 is in the lower positioning position and positions the multi-row work 30. (C) indicates that the positioning unit 10 is in the upper retracted position.

The processing system 1 shown in FIG. 1 includes an arrangement device 3 and a heat treatment device 5. The heat treatment device 5 has a transfer device 7 described later. The arrangement device 3 is arranged on the upstream side of the transfer direction F with respect to the transfer device 7. The heat treatment apparatus 5 is, for example, a roller hearth furnace that continuously heat-treats a multi-row work 30 that is transported while being supported by the multi-row transfer roller 20.

As shown in FIG. 2, the heat treatment device 5 includes a furnace body 6 and a transfer device 7. In the heat treatment apparatus 5 shown in FIGS. 1 and 2, the furnace body 6 extends in the transport direction F. The furnace body 6 is composed of, for example, a steel box body and an inner wall of a heat insulating material. The inside of the furnace body 6 is heated by a heating source (not shown) such as an electric heater or a gas burner. The multi-row work 30 as an object to be processed is heated to a temperature of, for example, about 500 to 1200 ° C. by the heat treatment apparatus 5.

The transport device 7 includes a multi-row transport roller 20 and a roller drive unit (not shown) that rotationally drives the multi-row transport roller 20. The multi-row transfer roller 20 is arranged in the furnace body 6 of the heat treatment apparatus 5 that heat-treats the multi-row work 30. The multi-row transfer roller 20 transfers the multi-row work 30 in the transfer direction F while supporting the multi-row work 30 in the furnace body 6. In other words, the multi-row work 30 is heat-treated in the heat treatment apparatus 5 while being conveyed in a misaligned arrangement described later. The multi-row transfer roller 20 used in the heat treatment apparatus 5 is made of a heat-resistant material (for example, heat-resistant steel) having heat resistance according to the heat treatment temperature in the heat treatment apparatus 5. In this case, it is possible to reduce the amount of expensive heat-resistant materials that can withstand high temperatures during heat treatment, and it is possible to reduce the cost of the multi-row transfer roller 20.

The multi-row transfer roller 20 has a plurality of transfer rollers 21 to 26, and for example, as shown in FIGS. 3 and 4, the first transfer roller 21, the second transfer roller 22, and the third transfer roller 23 are included. , A fourth transport roller 24, a fifth transport roller 25, and a sixth transport roller 26. The first transfer roller 21 to the sixth transfer roller 26 are rotatably supported by the support shaft 28 and are arranged apart from each other in the transfer direction F. The first transfer roller 21 to the sixth transfer roller 26 are arranged so that the separation distances (span lengths) of the adjacent transfer rollers are equal.

The roller drive unit of the transport device 7 may be, for example, a batch drive type in which each support shaft 28 of the multi-row transport roller 20 is collectively driven by an endless chain, or a motor may be used to drive each support shaft 28 of the multi-row transport roller 20. It can be an individual drive type that is driven individually. When the multi-row transport roller 20 rotates in the forward direction, the multi-row work 30 is transported in the transport direction F (downstream side), and when the multi-row transport roller 20 rotates in the reverse direction, the multi-row work 30 moves in the opposite direction (upstream side) of the transport direction F. ).

The multi-row work 30 is horizontally transported by the multi-row transport roller 20 along the transport direction F, for example, from the right side to the left side as shown in FIG. The multi-column work 30 has a plurality of works, for example, as shown in FIGS. 2 and 3, a first work 31, a second work 32, a third work 33, a fourth work 34, and a first work. It has 5 works 35 and. The first work 31 to the fifth work 35 are arranged apart from each other in the width direction T intersecting the transport direction F (for example, orthogonal to the transport direction F), and are arranged so that, for example, the intervals between adjacent works are equal. Will be done. The first work 31 to the fifth work 35 are long objects to be processed (for example, bar or square lumber) extending in the transport direction F, and are configured so that the total lengths in the transport direction F are equal.

A certain work (for example, the second work 32) in the multi-row work 30 is positioned in the transport direction F with respect to another work (for example, the first work 31) located next to a certain work (for example, the second work 32). The multi-row work 30 is transported in the transport direction F in the misaligned position shift arrangement. Hereinafter, the downstream side and the upstream side in the transport direction F are simply referred to as the downstream side and the upstream side, respectively. In FIG. 3, the second work 32 is located downstream of the first work 31 with a length slightly shorter than the 1.0 span length, and the third work 33 is slightly shorter than the 1.0 span length. The short length is located upstream of the second work 32, the fourth work 34 is slightly shorter than the 1.0 span length, and is located downstream of the third work 33, and the fifth work 34. Reference numeral 35 is slightly shorter than the 1.0 span length and is located upstream of the fourth work 34. Therefore, the first work 31 to the fifth work 35 in the multi-row work 30 are arranged alternately in a plan view. In the first embodiment shown in FIG. 3, the multi-row work 30 is transported in the transport direction F in a staggered arrangement in which the workpieces are displaced in a staggered manner in a plan view.

In FIG. 3, each downstream end of the first work 31, the third work 33, and the fifth work 35 has just started to be supported by the second transport roller 22, and the second work 32 and the fourth work 34 have just started to be supported. Since each downstream end is immediately before being supported by the first transport roller 21, it is not supported by the first transport roller 21. In other words, the span load on the downstream side of the second work 32 and the fourth work 34 is applied to the second transport roller 22, but the span load of the first work 31, the third work 33 and the fifth work 35 is. No load is applied to the second transfer roller 22.

Further, each upstream end of the second work 32 and the fourth work 34 is supported by the fifth transport roller 25, and each upstream end of the first work 31, the third work 33 and the fifth work 35 is the sixth. It is not supported by the sixth transport roller 26 because it has just been separated from the transport roller 26. In other words, the span load on the upstream side of the first work 31, the third work 33 and the fifth work 35 is applied to the fifth transport roller 25, but the span load of the second work 32 and the fourth work 34 is. The fifth transport roller 25 is not loaded.

Further, for example, since the first work 31 to the fifth work 35 are supported by the second transfer roller 22 and the third transfer roller 23, the second transfer roller 22 has the first work 31 to the fifth work 35. A half-span load on each upstream side of the above and a one-span load on each downstream side of the second work 32 and the fourth work 34 are loaded. Therefore, assuming that each span load in the first work 31 to the fifth work 35 is 1w, the load of 0.5w in the first work 31, the load of 1.5w in the second work 32, and 0 in the third work 33. A load of .5w, a load of 1.5w of the fourth work 34, and a load of 0.5w of the fifth work 35 are loaded on the second transfer roller 22. Then, as shown in FIG. 4, the second transport roller 22 is loaded with a load of 4.5 w as the total load of the first work 31 to the fifth work 35.

Similarly, the third transfer roller 23 and the fourth transfer roller 24 are loaded with a load of 5.0 w as the total load of the first work 31 to the fifth work 35, and the fifth transfer roller 25 is loaded with a load of 5.0 w. As the total load from the 1 work 31 to the 5th work 35, a load of 5.5 w is applied. Therefore, a total load of 5.5 w at the maximum is applied to the fifth transfer roller 25. Therefore, in the first embodiment (staggered misalignment arrangement) shown in FIGS. 3 and 4, it is compared with the total load of 7.5 w at the maximum in the aspect of FIG. 12 (parallel alignment arrangement) described as the prior art. Then, the load on the multi-row transfer roller 20 by the multi-row work 30 is distributed.

Therefore, according to the above-mentioned transport device 7, the transport in the staggered misaligned arrangement is performed by the multi-row transport roller 20 by the multi-row work 30 rather than the transport in which the multi-row works 30 are arranged flush with each other in a plan view. Since the load on the plurality of rows is distributed, the cost of the multi-row transfer roller 20 can be reduced.

The staggered misalignment arrangement of the multi-row work 30 shown in FIG. 3 is formed by the arrangement device 3 (shown in FIG. 1) arranged on the upstream side of the transfer direction F with respect to the transfer device 7. With the arrangement device 3, it is possible to easily realize a misaligned arrangement in which the multi-row work 30 is displaced in the transport direction F in advance.

The array device 3 shown in FIG. 1 has a mounting unit 4, a positioning unit 10, and a moving unit 14. As shown in FIG. 14A, the mounting portion 4 has a plurality of rows of transport rollers 20 which are arranged apart from each other in the transport direction F, and the first work 31 to the fifth work 35 of the multi-row work 30. Is placed and transported in the transport direction F. The roller drive unit of the arrangement device 3 may be a collective drive type or an individual drive type, similarly to the roller drive unit of the transfer device 7.

As shown in FIGS. 1, 13 and 14, the moving unit 14 of the array device 3 has a support 18, a pair of columns 19, a pair of elevating screws 15, and a pair of elevating drive units 16. The moving portion 14 moves the positioning portion 10 supported by the support 18 between the positioning position and the retracted position. The pair of columns 19 are erected on the mounting portion 4. An elevating drive unit 16 is attached to each column 19. The elevating drive unit 16 is, for example, an electric motor. The elevating screw 15 is, for example, a ball screw. When the elevating screw 15 extending in the vertical direction is rotated by the drive of the elevating drive unit 16, the positioning unit 10 moves in the vertical direction and moves between the positioning position and the retracted position. As shown in FIG. 14B, the positioning position is a lower position in which the multi-row work 30 conveyed in the mounting portion 4 is positioned by the positioning portion 10. As shown in FIG. 14 (C), the retracted position is an upper position where the positioning portion 10 does not interfere with the multi-row work 30 conveyed in the mounting portion 4.

In FIG. 14A, the multi-row workpieces 30 aligned and arranged flush with each other are conveyed along the transfer direction F by the multi-row transfer roller 20 and approach the contact portion 13 at the lower positioning position. Then, in FIG. 14B, the multi-row work 30 comes into contact with the contact portion 13 to stop the transport along the transport direction F. Even if the transport of the multi-row work 30 is stopped, the multi-row transport roller 20 continues to rotate, but slips with respect to the multi-row work 30, so that the multi-row transport roller 20 is in an idling state. As a result, the multi-row work 30 is positioned in the predetermined misalignment arrangement corresponding to the contact portion 13 arranged in the predetermined misalignment arrangement. After that, as shown in FIG. 14 (C), by moving the positioning portion 10 to the upper retracted position, the contact of the plurality of rows of works 30 with the contact portion 13 is released all at once. Then, the multi-row work 30 passes under the positioning unit 10 and is conveyed to the downstream side in the conveying direction F while maintaining a predetermined misaligned arrangement. As a result, the arrangement device 3 can smoothly switch the positioning and the transfer of the multi-row work 30. The elevating drive unit 16 and the elevating screw 15 in the moving unit 14 may be configured by, for example, a cylinder driven by fluid pressure and a rod connected to the cylinder.

The positioning unit 10 of the array device 3 shown in FIG. 1 is arranged, for example, on the downstream side of the transport direction F in the array device 3. As shown in FIGS. 1 and 13, the positioning unit 10 has a plurality of contact portions 13 arranged corresponding to the plurality of rows of workpieces 30, a plurality of positioning screws 12, and a plurality of positioning drive units 17. The positioning portion 10 displaceably positions the contact portion 13 so that the plurality of rows of workpieces 30 have a predetermined misaligned arrangement. The plurality of contact portions 13 and the positioning screw 12 are arranged at positions corresponding to the plurality of rows of workpieces 30 apart from each other in the width direction T.

In the embodiment shown in FIGS. 1 and 13, a positioning drive unit 17 is attached to the lower surface of the support 18. The positioning drive unit 17 is, for example, an electric motor. The positioning screw 12 is, for example, a ball screw. By driving the positioning drive unit 17, the positioning screw 12 extending in the transport direction F rotates, and the contact portion 13 moves to the upstream side or the downstream side in the transport direction F. By operating the positioning drive unit 17 individually, the contact unit 13 is arranged at each predetermined position. Therefore, the positioning unit 10 is configured so that the positioning drive unit 17 can individually adjust the amount of movement along the transport direction F according to the misalignment arrangement. As a result, the misaligned arrangement of the multi-row work 30 can be changed flexibly and quickly. The positioning unit 10 including the positioning drive unit 17 and the positioning screw 12 may be configured to include, for example, a cylinder driven by fluid pressure and a rod connected to the piston of the cylinder.

In the embodiment shown in FIG. 1, the contact portion 13 corresponding to the first work 31 is located at a position protruding upstream with respect to the contact portion 13 corresponding to the second work 32. The contact portion 13 corresponding to the third work 33 is located at a position protruding upstream with respect to the contact portion 13 corresponding to the second work 32. The contact portion 13 corresponding to the fourth work 34 is located at a position protruding downstream with respect to the contact portion 13 corresponding to the third work 33. The contact portion 13 corresponding to the fifth work 35 is located at a position protruding upstream with respect to the contact portion 13 corresponding to the fourth work 34. Therefore, the positioning portion 10 shown in FIG. 1 forms a multi-row work 30 having a staggered arrangement that is displaced in a staggered manner in a plan view.

[Second Embodiment]
The transport device 7 according to the second embodiment will be described with reference to FIGS. 5 to 7. FIG. 5 is a plan view of the array device 3 according to the second embodiment. FIG. 6 is a plan view of the transport device 7 arranged on the downstream side of the array device 3 shown in FIG. FIG. 7 is a side view of the transport device 7 shown in FIG.

In the second embodiment shown in FIG. 6, the multi-row work 30 is transported in the transport direction F in a staircase-like arrangement in a plan view.

In FIG. 6, the downstream end of the first work 31 has just started to be supported by the second transfer roller 22, and each downstream end of the second work 32 to the fifth work 35 is supported by the second transfer roller 22. It is supported and is not supported by the first transport roller 21, but protrudes stepwise in the transport direction F between the first transport roller 21 and the second transport roller 22. In other words, the load on the downstream side of the second work 32 to the fifth work 35 is applied to the second transport roller 22 according to the protrusion length to the downstream side. Further, the upstream half-span load from the first work 31 to the fifth work 35 is applied to the second transport roller 22.

The protrusion length from the second work 32 to the downstream side of the fifth work 35 is slightly shorter than the 0.25 span length, the 0.5 span length, the 0.75 span length, and the 1.0 span length. Suppose it is a length. Assuming that each span load in the first work 31 to the fifth work 35 is 1w, the load of 0.5w of the first work 31, the load of 0.75w of the second work 32, and the load of 1.0w of the third work 33 , The load of 1.25w of the 4th work 34, and the load of 1.5w of the 5th work 35 are loaded on the second transfer roller 22. Then, as shown in FIG. 7, the second transport roller 22 is loaded with a load of 5.0 w as the total load of the first work 31 to the fifth work 35.

Similarly, the third transfer roller 23, the fourth transfer roller 24, and the fifth transfer roller 25 are loaded with a load of 5.0 w as the total load of the first work 31 to the fifth work 35. Therefore, in the second embodiment (stepped misalignment arrangement) shown in FIGS. 6 and 7, it is compared with the total load of 7.5 w at the maximum in the aspect of FIG. 12 (parallel arrangement) described as the prior art. Then, the load on the multi-row transfer roller 20 by the multi-row work 30 is distributed.

Therefore, according to the above-mentioned transport device 7, the transport in the stepped misaligned arrangement is performed by the multi-row transport roller 20 by the multi-row work 30 rather than the transport in which the multi-row works 30 are arranged flush with each other in a plan view. Since the load on the plurality of rows is distributed, the cost of the multi-row transfer roller 20 can be reduced.

The stepped misalignment arrangement of the multi-row work 30 shown in FIG. 6 is formed by an arrangement device 3 (shown in FIG. 5) arranged on the downstream side of the transfer direction F with respect to the transfer device 7. With the arrangement device 3, it is possible to easily realize a misaligned arrangement in which the multi-row work 30 is displaced in the transport direction F in advance.

The array device 3 shown in FIG. 5 has a mounting unit 4, a positioning unit 10, and a moving unit 14. The positioning unit 10 is arranged, for example, on the downstream side of the transport direction F in the arrangement device 3. The positioning portion 10 has a plurality of contact portions 13 and a plurality of fixing portions 11 arranged corresponding to the plurality of rows of workpieces 30. In the positioning portion 10 shown in FIG. 5, a plurality of fixing portions 11 are fixed to the support 18 at intervals in the width direction T. The contact portion 13 connected to the fixing portion 11 fixedly positions the multi-row work 30 in the mounting portion 4 in a predetermined misaligned arrangement. In the positioning portion 10 shown in FIG. 5, the contact portion 13 does not move in the transport direction F, and the amount of protrusion protruding to the opposite side of the transport direction F is fixed corresponding to the misalignment arrangement.

In the embodiment shown in FIG. 5, the contact portion 13 corresponding to the fourth work 34 is located at a position protruding upstream with respect to the support 18. The contact portion 13 corresponding to the third work 33 is located at a position protruding upstream with respect to the contact portion 13 corresponding to the fourth work 34. The contact portion 13 corresponding to the second work 32 is located at a position protruding upstream with respect to the contact portion 13 corresponding to the third work 33. The contact portion 13 corresponding to the first work 31 is located at a position protruding upstream with respect to the contact portion 13 corresponding to the second work 32. The fifth work 35 is configured to come into contact with the support 18. Therefore, the positioning portion 10 shown in FIG. 5 forms a multi-row work 30 having a stepped arrangement that is displaced in a stepped manner in a plan view.

[Third Embodiment]
The transport device 7 according to the third embodiment will be described with reference to FIGS. 8 to 10. FIG. 8 is a plan view of the array device 3 according to the third embodiment. FIG. 9 is a plan view of the transport device 7 arranged on the downstream side of the array device 3 shown in FIG. FIG. 10 is a side view of the transport device 7 shown in FIG.

In the third embodiment shown in FIG. 9, the multi-row work 30 is transported in the transport direction F in a half-wave-shaped arrangement that is offset in a half-wave shape in a plan view.

In FIG. 9, each downstream end of the first work 31 and the fifth work 35 has just started to be supported by the second transport roller 22, and each downstream end of the second work 32 to the fourth work 34 is It is not supported by the first transport roller 21, but protrudes in a half-wave shape in the transport direction F between the first transport roller 21 and the second transport roller 22. In other words, the load on the downstream side of the second work 32 to the fourth work 34 is applied to the second transport roller 22 according to the protrusion length to the downstream side. Further, the upstream half-span load from the first work 31 to the fifth work 35 is applied to the second transport roller 22.

It is assumed that the protrusion length from the second work 32 to the downstream side of the fourth work 34 is a length of 0.5 span, a length slightly shorter than the length of 1.0 span, and a length of 0.5 span. .. Assuming that each span load in the first work 31 to the fifth work 35 is 1w, the load of 0.5w of the first work 31, the load of 1.0w of the second work 32, and the load of 1.5w of the third work 33 , The load of 1.0 w of the fourth work 34, and the load of 0.5 w of the fifth work 35 are loaded on the second transfer roller 22. Then, as shown in FIG. 10, the second transport roller 22 is loaded with a load of 4.5 w as the total load of the first work 31 to the fifth work 35.

Similarly, the third transfer roller 23, the fourth transfer roller 24, and the fifth transfer roller 25 have a total load of 5.0 w and 5.0 w as the total load of the first work 31 to the fifth work 35, respectively. A load and a load of 5.5w are applied. Therefore, in the third embodiment (half-wave type misaligned arrangement) shown in FIGS. 9 and 10, the total load of 7.5 w at the maximum in the aspect of FIG. 12 (parallel arrangement) described as the prior art. The load on the multi-row transfer roller 20 by the multi-row work 30 is distributed as compared with the above.

Therefore, according to the above-mentioned transport device 7, the transport in the half-wave type misaligned arrangement is the transport by the multi-row work 30 rather than the transport in which the multi-row works 30 are arranged flush with each other in a plan view. Since the load on the rollers 20 is distributed, the cost of the multi-row transfer roller 20 can be reduced.

The stepped misalignment arrangement of the multi-row work 30 shown in FIG. 9 is formed by an arrangement device 3 (shown in FIG. 8) arranged on the upstream side of the transfer direction F with respect to the transfer device 7. With the arrangement device 3, it is possible to easily realize a misaligned arrangement in which the multi-row work 30 is displaced in the transport direction F in advance.

The positioning unit 10 of the array device 3 shown in FIG. 8 is arranged, for example, on the upstream side of the transport direction F in the array device 3. The positioning unit 10 of FIG. 8 has the same configuration as the positioning unit 10 shown in FIG. That is, the positioning unit 10 has a plurality of contact portions 13 arranged corresponding to the plurality of rows of works 30, a plurality of positioning screws 12, and a plurality of positioning drive units 17, and the plurality of rows of works 30 are positioned at predetermined positions. The contact portion 13 is positioned so as to be displaceable so as to be in a misaligned arrangement. Therefore, the positioning unit 10 is configured so that the positioning drive unit 17 can individually adjust the amount of movement along the transport direction F according to the misalignment arrangement. As a result, the misaligned arrangement of the multi-row work 30 can be changed flexibly and quickly.

In the embodiment shown in FIG. 8, the contact portion 13 corresponding to the first work 31 is located at a position protruding downstream with respect to the support 18. The contact portion 13 corresponding to the second work 32 is located at a position protruding downstream with respect to the contact portion 13 corresponding to the first work 31. The contact portion 13 corresponding to the third work 33 is located at a position protruding downstream with respect to the contact portion 13 corresponding to the second work 32. The contact portion 13 corresponding to the fourth work 34 is located at a position protruding upstream with respect to the contact portion 13 corresponding to the third work 33. The contact portion 13 corresponding to the fifth work 35 is located at a position protruding upstream with respect to the contact portion 13 corresponding to the fourth work 34. Further, the protrusion amount of the contact portion 13 corresponding to the first work 31 and the contact portion 13 corresponding to the fifth work 35 is the same, and the contact portion 13 and the fourth work 34 corresponding to the second work 32 are the same. The amount of protrusion of the contact portion 13 corresponding to the above is the same. Therefore, the positioning portion 10 shown in FIG. 8 forms a multi-row work 30 having a half-wave pattern that is displaced in a half-wave shape in a plan view.

The multi-row workpieces 30 aligned and arranged flush with each other are transported along the transport direction F by the forward-rotating multi-row transport roller 20, and the upstream end of the multi-row workpiece 30 is below the positioning portion 10 in the upper retracted position. When passing through, the forward rotation of the multi-row transfer roller 20 is stopped. After moving the positioning unit 10 to the lower positioning position, the multi-row transfer roller 20 is rotated in the reverse direction to correspond to the contact portion 13 arranged in a predetermined misalignment arrangement in the same manner as in the above-mentioned positioning. The multi-row work 30 is positioned in a predetermined misalignment arrangement. After that, by rotating the multi-row transport roller 20 in the forward direction, the multi-row work 30 is transported to the downstream side in the transport direction F while maintaining a predetermined misaligned arrangement.

Although the specific embodiment of the present invention has been described, the present invention is not limited to the above embodiment, and can be variously modified and carried out within the scope of the present invention.

In the above embodiment, the moving unit 14 moves the positioning unit 10 in the vertical direction with respect to the mounting unit 4, but by moving the positioning unit 10 with respect to the mounting unit 4 in the width direction T. , It is also possible to position the position at the positioning position and the retracted position.

In the half-wave-shaped misalignment arrangement of the third embodiment, the central portion of the multi-row work 30 in the width direction T protrudes to the downstream side in the transport direction F in a plan view, but the multi-row work 30 The central portion in the width direction T may be recessed on the upstream side in the transport direction F in a plan view.

The transport device 7 of the present invention has a quenching treatment, an annealing treatment, a normalizing treatment, and a tempering treatment for continuously heat-treating the multi-row work 30 by carrying the multi-row work 30 on a multi-row transport roller 20. It can be applied to various heat treatments such as.

In the present invention, in order to position the multi-row work 30 in a predetermined misaligned arrangement, various means and methods such as manual positioning can be adopted instead of the automatic positioning by the positioning unit 10 described above.

The present invention and embodiments can be summarized as follows.

The transport method according to one aspect of the present invention is
In the transport method in which the multi-row workpiece 30 is supported by the multi-row transport roller 20 and transported in the transport direction F.
The works 31 to 35 in the multi-row work 30 are arranged apart from each other in the width direction T intersecting the transport direction F.
The transport rollers 21 to 26 in the multi-row transport roller 20 are arranged apart from each other in the transport direction F.
A work in the multi-row work 30 is a misaligned array in which the work is displaced in the transport direction F with respect to another work located next to the work, and the multi-row work 30 is in the transport direction. It is characterized in that it is transported to F.

According to the above aspect, the transport in the misaligned arrangement distributes the load on the multi-row transport roller 20 by the multi-row work 30 rather than the transport in which the multi-row workpieces 30 are arranged flush with each other in a plan view. , The cost of the multi-row transfer roller 20 can be reduced.

Further, in the transport method of one embodiment,
The misaligned array is a staggered array, a stepped array, or a half-wave array in a plan view.

According to the above embodiment, the load on the multi-row transport roller 20 by the multi-row work 30 can be dispersed rather than the transport arranged flush with each other in a plan view.

Further, in the transport method of one embodiment,
The multi-row work 30 in the misaligned arrangement is heat-treated in the heat treatment apparatus 5.

According to the above embodiment, the amount of expensive heat-resistant material that can withstand high temperatures during heat treatment can be reduced, and the cost of the multi-row transfer roller 20 can be reduced.

The transport device 7 according to another aspect of the present invention is
In the transport device 7 that transports the multi-row workpiece 30 in the transport direction F while supporting it with the multi-row transport roller 20.
The works 31 to 35 in the multi-row work 30 are arranged apart from each other in the width direction T intersecting the transport direction F.
The transport rollers 21 to 26 in the multi-row transport roller 20 are arranged apart from each other in the transport direction F.
The arrangement device 3 for forming a misaligned arrangement in which a certain work in the multi-row work 30 is misaligned in the transport direction F with respect to another work located adjacent to the certain work is the transport. It is arranged on the upstream side or the downstream side of the transport direction F with respect to the device 7.

According to the above aspect, it is possible to easily realize in advance a misaligned arrangement in which the multi-row work 30 is misaligned in the transport direction F.

Further, in the transport device 7 of one embodiment,
The arrangement device 3 has a mounting unit 4 for mounting and transporting the multi-row work 30, a positioning unit 10 for positioning the multi-row work 30 in the above-mentioned mounting unit 4 in the misaligned arrangement, and the positioning unit 10. It has a moving portion 14 for moving the portion 10 between a positioning position and a retracting position with respect to the previously described placement portion 4.

According to the above embodiment, the arrangement device 3 can smoothly position and convey the multi-row work 30.

Further, in the transport device 7 of one embodiment,
The positioning unit 10 is configured to be able to individually adjust the amount of movement along the transport direction F in response to the misalignment arrangement of the multi-row work 30.

According to the above embodiment, the misalignment arrangement of the multi-row work 30 can be changed flexibly and quickly.

Further, in the transport device 7 of one embodiment,
The multi-row transfer roller 20 is arranged in a heat treatment apparatus 5 that heat-treats the multi-row work 30.

According to the above embodiment, the amount of expensive heat-resistant material that can withstand high temperatures during heat treatment can be reduced, and the cost of the multi-row transfer roller 20 can be reduced. Further, the present invention can be applied to an existing heat treatment apparatus 5 in addition to the new heat treatment apparatus 5. In any of the heat treatment devices 5, the load on the roller drive unit (motor) that rotationally drives the multi-row transfer roller 20 and the multi-row transfer roller 20 is reduced, so that there is an advantage that the life of the heat treatment device 5 can be extended. There is also.

1 ... Processing system 3 ... Arrangement device 4 ... Mounting part 5 ... Heat treatment device 6 ... Furnace 7 ... Transfer device 10 ... Positioning part 11 ... Fixed part 12 ... Positioning screw 13 ... Contact part 14 ... Moving part 15 ... Lifting screw 16 ... Elevating drive unit 17 ... Positioning drive unit 18 ... Support 19 ... Support column 20 ... Multi-row transfer roller 21 ... First transfer roller (transport roller)
22 ... Second transport roller (conveyor roller)
23 ... Third transport roller (conveyor roller)
24 ... 4th transport roller (conveyor roller)
25 ... Fifth transport roller (conveyor roller)
26 ... 6th transport roller (conveyor roller)
28 ... Support axis 30 ... Multiple row work 31 ... First work (work)
32 ... 2nd work (work)
33 ... 3rd work (work)
34 ... 4th work (work)
35 ... 5th work (work)
F ... transport direction T ... width direction

Claims (7)

In a transport method in which a multi-row workpiece is supported by a multi-row transport roller and transported in the transport direction.
The workpieces in the plurality of rows of workpieces are arranged apart from each other in the width direction intersecting the transport direction.
The transport rollers in the multi-row transport rollers are arranged apart from each other in the transport direction.
A work in the multi-row work is misaligned in the transport direction with respect to another work located next to the work, and the multi-row work is transported in the transport direction. A method of transporting a multi-row work, which is characterized by the fact that. The plurality of rows according to claim 1, wherein the misaligned array is a staggered array, a stepped array, or a half-wave array in a plan view. Work transfer method. The method for transporting a multi-row work according to claim 1 or 2, wherein the multi-row work in the misaligned arrangement is heat-treated in a heat treatment apparatus. In a transport device that transports multi-row workpieces in the transport direction while supporting them with multi-row transport rollers.
The workpieces in the plurality of rows of workpieces are arranged apart from each other in the width direction intersecting the transport direction.
The transport rollers in the multi-row transport rollers are arranged apart from each other in the transport direction.
An arrangement device for forming a misaligned arrangement in which a certain work in the multi-row work is displaced in the transport direction with respect to another work located adjacent to the certain work is provided with respect to the transport device. A device for transporting a multi-row work, characterized in that it is arranged on the upstream side or the downstream side in the transport direction. The arrangement device has a mounting portion for mounting and transporting the multi-row work, a positioning portion for positioning the multi-row work in the above-mentioned mounting portion in the misaligned arrangement, and a pre-described positioning portion for the positioning portion. The transfer device for a plurality of rows of workpieces according to claim 4, further comprising a moving portion for moving between a positioning position and a retracting position. 4. Item 5. The transfer device for a multi-row workpiece according to Item 5. The transfer device for a multi-row work according to any one of claims 4 to 6, wherein the multi-row transfer roller is arranged in a heat treatment apparatus for heat-treating the multi-row work.

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