WO2001036308A1

WO2001036308A1 - Device for changing row of conveyed articles

Info

Publication number: WO2001036308A1
Application number: PCT/JP1999/007076
Authority: WO
Inventors: Kôichi TAKAGI
Original assignee: Takagi Koichi
Priority date: 1999-11-12
Filing date: 1999-12-16
Publication date: 2001-05-25

Abstract

A device for changing a row of conveyed articles, capable of suitably preventing overturn of conveyed articles and making it unnecessary to stop the line even if an overturn of conveyed articles occurs on the upstream. The device comprises a plurality of guide rails (C1) connecting a pair of attachment chains (B1), grippers (E1) fixed to sliders (D1) slidably locked to and movable along the guide rails (C1), wherein PET bottles (Q1) suspended and gripped by the grippers (E1) are conveyed and by transversely moving the sliders (D1) at a predetermined rate, the number of rows of the PET bottles (Q1) is changed.

Description

TECHNICAL FIELD The present invention relates to a conveyer conveyor, and particularly to a conveyor conveyer for changing a conveyed product line by sorting or consolidating conveyed product lines when conveying. It concerns the equipment. 2. Description of the Related Art Conventionally, a conveyed product line changing device used on a conveyed product conveyer has a fixed guide ゃ, a moving guide for moving while conveying a conveyed product on a plurality of rows of conveyors, or a phase difference. The row of the conveyed articles is sorted or gathered by a rotating body or the like, and the row of the conveyed articles is increased or decreased and changed. In addition, the modes for increasing or decreasing the number of rows of the conveyed products include increasing or decreasing the number of single conveyed product rows and a plurality of conveyed product rows, or increasing or decreasing the number of conveyed products and a plurality of conveyed product rows having different numbers of rows. Is assumed. In addition, as the above-mentioned conveyed product line changing device, usually, conveyed products are placed on the upper surface of the conveyor and conveyed, and the conveyed product line is increased or decreased in the conveying process.

However, in such a conveyed product line changing device, the conveyed product line is increased or decreased by changing the traveling direction of the conveyed product that travels straight at high speed. Therefore, when the conveyed product is a tall container such as a beverage container, which is unstable and easily falls down, there is a possibility that the beverage container may fall over. For this reason, the line must be stopped to remove the overturned goods. This caused problems such as a reduction in the line operation rate and the need for human resources. Accordingly, the present invention provides a device for changing a row of conveyed articles which can suitably prevent the conveyed articles from overturning and does not need to stop the line even if the conveyed articles are overturned. The purpose is to provide.

Disclosure of the invention

The present invention firstly provides a pair of transmission members wound around a drive wheel and a driven wheel and formed in a continuous loop shape for transmitting a rotational force from the drive wheel to the driven wheel; A plurality of guide rails connecting the guide rails at predetermined intervals, a slider slidably locked to the guide rails and movable along the guide rails, and fixed to the sliders so as to be suspended. A gripper capable of gripping and suspending the conveyed article, and capable of switching between a gripped state and an open state of the conveyed article, and simultaneously transporting the conveyed article in a suspended gripped state by the gripper. And a change mechanism for changing the row of the conveyed articles by moving the slider in the horizontal direction at a predetermined ratio.

In the transported article row changing device of the first configuration, the gripping tool is fixed to the slider, and the transported article can be gripped and suspended by the gripping tool. It is configured to transport a transportable product that can be lowered while holding it in a suspended state. At the same time, the row of the conveyed articles is changed by moving the slider in the horizontal direction at a predetermined ratio. Therefore, the transported article is suspended and gripped by the gripping tool, and the transported article is smoothly moved and moved in the lateral direction, so that the transported article can be suitably prevented from overturning. High-speed operation of the line becomes possible. Also, it is possible to smoothly cope with the case where the above-mentioned conveyed articles are intermittently supplied in a state of being separated. Furthermore, since the conveyed product is suspended by the gripping tool, even if the conveyed product falls on the upstream side, Since the above conveyed product is not grasped and falls to the lower part of the equipment, there is no need to stop the line to collect the above conveyed product that has fallen during the conveyance, which causes problems such as a reduction in the line operation rate and labor. Absent.

Secondly, in the first configuration, the gripper urges the pair of lever members toward the gripping side so that the pair of rotatably pivoted lever members are always gripped. And a switching means that can switch between a gripping state and an open state of the gripping tool by a rotating operation of the pair of lever members.

In the transported product line changing device having the second configuration, the gripper urges the pair of lever members toward the gripping side so that the pair of rotatably pivoted lever members is constantly held. It has an urging member and a switching means that can switch between the gripping state and the open state of the gripping tool by rotating the pair of lever members, so that the pair of lever members are always gripped. Since the operating mechanism for bringing the gripping tool into the gripping state is not required, the switching mechanism only needs to be set for a portion where the setting range is short and the opening state is short, such as a portion for holding and releasing the container. A simple and efficient configuration can be achieved. In addition, since the gripper can be switched between the gripping state and the open state by rotating the pair of lever members, the gripper can be switched between the gripping state and the open state with a simple configuration. Becomes possible. Thirdly, in the second configuration, the urging member obtains an urging force by a repulsive force or an attractive force of a magnet. In the transported product line changing device of the third configuration, since the biasing member obtains the biasing force by the repulsive force or the attracting force of the magnet, the structure is simple and there is no danger of cutting or the like. A conveyed product can be gripped by an inexpensive configuration.

Fourth, in the second or third configuration, the switching means It is performed by a cam mechanism. Therefore, it is possible to smoothly switch between the gripping state of the gripping state and the open state with a simple configuration.

Fifth, in the second or third configuration, the switching means performs the repulsive force of the magnet by the urging force of the attraction force. In the transported product line changing device of the fifth configuration, the simple configuration enables the switching between the gripping state of the gripper and the open state smoothly, and generation of abrasion powder due to non-contact. do not do. Further, it is possible to provide a switching means in which an impact on the holding tool is suppressed. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a configuration diagram showing a transport product line changing device based on an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a transport and sorting operation of the transport product line changing device based on the embodiment of the present invention. FIG. 3 is a perspective view showing the relationship between the guide rail, the slider and the guide member, and FIG. 4 is an enlarged view of a main part showing a gripping state of the conveyed product by the gripper. FIG. 5 is an enlarged view of a main part showing a gripped state of the conveyed product by the gripper, and FIG. 6 is a magnified view of a main part showing the released state of the conveyed product by the gripper. Fig. 8 is an explanatory view showing the operation of changing the conveyed article row by the guide member, and Fig. 8 is an explanatory view showing the switching operation between the holding state and the releasing state of the gripper by the gripping cam and the release cam. Fig. 9 is an explanatory diagram showing the dimensional relationship between the gripper and the conveyed product. Fig. 10 is the lateral movement of the conveyed product. Fig. 11 is an explanatory diagram showing an example of a rectangular columnar conveyed product, and Fig. 12 is an explanatory diagram showing an example in which a support fork is used. FIG. 13 is a perspective view showing an example in which guide rails are arranged in two axes, and FIG. 14 shows an example in which a conveyed product is gripped by a biasing force due to a repulsive force of a magnet. Fig. 15 is an enlarged view of the main part. FIG. 4 is an enlarged view of a main part showing an example in which a conveyed product is gripped by an urging force of a magnet's attraction force and an example in which a gripper is switched between a gripping state and an open state by a repulsive force of a magnet. BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be described in more detail with reference to the accompanying drawings. This embodiment shows an example of a sorting device that sorts articles conveyed in a single row into a plurality of rows. Also, an example is shown in the case of a round PET bottle as a conveyed product.

As shown in FIGS. 1 and 2, the conveyed article line changing device A1 according to the present invention includes an attachment chain (transmission member) B1, a guide rail C1, a slider D1, a gripper E1, and a guide. Material (change mechanism) F1, gripping cam G1 (switching means), release cam G2 (switching means), frame HI, supply conveyor J1, unloading conveyor J2, PET bottle (transportation product) Q1 are doing.

The attachment chain B1 has a plurality of link plates B10 connected in a continuous loop, and as shown in FIG. 1, a drive wheel B1a driven by an electric motor (not shown) and a rotating wheel B1a. It is wound around a driven wheel B1b that is freely pivotally supported, and transmits a rotational force from the drive wheel B1a to the driven wheel B1b.

As shown in FIG. 3, the attachment chain B1 is formed by engaging a pair of the link plates B10 via a pair of pins B12, and is provided on both sides of the frame H1. They are arranged facing each other. Further, as shown in FIG. 3, each of the link plates B 10 arranged inside has a substantially inverted T-shape, and a fitting hole B 10 a is formed in an upper projecting portion. Each is formed. Then, as shown in FIG. The round bar-shaped guide rails C1 are fitted and fixed between the fitting holes B10a of the respective link plates # 10 facing both sides of 1.

As shown in FIGS. 4 and 5, the slider D1 is formed by fixing a flange D14 having a substantially inverted T-shape in a side view to the lower side of a flat guide plate D10.

As shown in FIGS. 4 and 5, the guide plate D10 has a through hole D10a and a long hole D10b penetrating therethrough from the side. By inserting the guide rail C1 into the through hole D10a and the elongated hole D10b, the guide rail C1 and the slider D1 are engaged. In addition, a pin D12 is formed to protrude upward at the center of the upper surface of the guide plate D10.

As shown in FIGS. 4 and 5, the flange D14 is formed with a concave portion D14a for rotatably supporting the holding tool E1. Further, the concave portion D14 is formed on both sides thereof. A through hole D 14 b communicating with the hole 14 a is formed.

As shown in FIGS. 4 and 5, the gripper E 1 has a lever member E 10 having an arm shape disposed in a pair of left and right sides in the concave portion D 14 a of the flange D 14. Formed. Then, the pins D16 are inserted into the through holes D14b, respectively, so as to be rotatably supported by the flanges D14 as described above.

Further, as shown in FIGS. 4 and 5, a claw portion E1a projecting inward at a substantially right angle is formed at the lower end portion of the lever member E10. Further, a spring E 20 ( (Biasing member). Therefore, as shown in FIGS. 4 and 5, the claw portions E1a of the pair of left and right lever members E10 should be inserted into the lower side of the neck portion Q1a of the bottle Q1. This makes it possible to suitably hold and suspend the PET bottle Q1. In addition, since the pair of lever members E10 are always in a gripping state, an operation mechanism for holding the gripper E1 in a gripping state is not required, and a setting range such as a portion for gripping and releasing the PET bottle Q1 is set. Since the switching mechanism only needs to be set for the part where the open state is short, a simple and efficient configuration can be achieved.

Also, by pressing the outer upper end corner E 1 b of the lever member E 10 inward, the lever member E 10 resists the spring force of the spring E 20 as shown in FIG. Rotate outward around D16. Therefore, the PET bottle Q1 is released to release the grip, and the hanging of the PET bottle Q1 is released.

In other words, by opening and closing the outer upper corner E 1 b of the lever member E 10, it is possible to switch between the holding state and the open state of the PET bottle Q 1 by the gripper E 1. become.

Further, as shown in FIG. 9, the gripper E1 is also provided with the pitch Pq of the PET bottle Q1 at a short pitch Pe. Therefore, a large number of the PET bottles Q 1 are also provided, so that the gripping tool E 1 becomes more continuous, thereby appropriately preventing the PET bottle Q 1 from falling or falling. However, the PET bottle Q1 can be gripped regardless of the pitch of the PET bottle Q1. Then, it is not necessary to adjust the pitch of the gripper E1 according to the change of the pitch of the PET bottle Q1.

Preferably, the pitch Pe of the gripper E1 is set to about 30 to 70% of the outer diameter of the PET bottle Q1. Further, the gripping tools E1 are arranged so that the gap Le between the gripping tools E1 is 10% or less of the width Lq of the gripping portion of the PET bottle Q1. Therefore, it is possible to prevent the PET bottle Q 1 from dropping into the gap Le between the grippers E 1.

Further, as shown in FIG. 7, the guide member F 1 (F 1 a, F ib) is formed with flexibility by a thin leaf spring or a metal plate, and as shown in FIG. The pin D 12 of the slider D 1 is disposed at a height at which the pin D 12 can be extracted, and one end is fixed to an end of the fixed guide F 2 as shown in FIG. The rod of the air cylinder F 20 is fixed to a substantially middle portion, and is rotatable by expansion and contraction of the air cylinder F 20.

As shown in FIG. 1, the gripping cam G1 and the release cam G2 are formed along a periphery of the driving wheel B1a and the driven wheel B1b into a substantially arcuate side view by a resin member or the like. Is done. Then, as shown in FIG. 2, the gripping cams G1 are arranged right above the supply conveyor J1 in a pair of right and left directions with a predetermined interval therebetween. Further, as shown in FIG. 2, the release cams G2 are disposed in a pair of right and left on each of the sorted lines immediately above the unloading conveyor J2 in a direction facing each other at a predetermined interval. Is done. Further, as shown in FIG. 8, the gripping cam G1 and the release cam G2 gradually increase in the traveling direction in the unfolded shape, and when reaching the top, the thickness in the traveling direction is reversed. Gradually decreases. Then, as shown in FIG. 8, at the top, the interval between the gripping cam G1 and the release cam G2 disposed in a pair on the left and right is determined by the upper end corner E1b of the lever member E10. Press to set so that the specified opening / closing operation is possible.

Therefore, the grip cam G1 and the release cam G2 are connected to the slider As shown in FIG. 8, the outer upper end corner E 1b of the gripper E 1 is opened and closed by passing D 1, as shown in FIG. 8, so that the PET bottle Q 1 is gripped as described above. And a switching means capable of switching between the open state and the open state. Next, the operation and effect of the present embodiment will be described.

As shown in FIGS. 1 and 2, the supply conveyor J1 transports the PET bottles Q1 to the lower side of the attachment chain B1 in a single row. The attachment chain B1 is rotated by driving the drive wheel B1a by an electric motor (not shown). Accordingly, the guide rail C 1 fixed to each link plate B 10 is also moved along the transport direction of the PET bottle Q 1 on the traveling side (lower side) of the attachment chain B 1. , Move continuously. Therefore, the slider D1 engaged with the guide rail C1 also moves continuously in the transport direction of the PET bottle Q1 on the advancing side of the attachment chain B1.

At this time, when the slider D1 force S and the attachment chain B1 descend from the upper surface side to the lower surface side along the outer periphery of the driven wheel B1b, as shown in FIG. Since the upper end corner E 1b of the pair enters between the pair of holding cams G 1, the upper end corner E 1b is pushed inward. When the upper end corner E lb moves to the top of the pair of gripping cams G 1, as shown in FIG. 8, the upper end corner E 1 b is pushed in by a predetermined amount, and the lever member E 10 is moved. Then, as shown in FIG. 6, the gripper E1 is opened.

When the slider D 1 reaches the vicinity of the lowermost end of the driven wheel B 1 b, the claw portions E 1 a of the pair of left and right lever members E 10 are connected to the neck portion Q of the PET bottle Q 1. Since it is below 1a, the grip cam G1 is set to be retracted at this position. Therefore, the above gripper Since El is in the gripping state shown in FIG. 4, the claw portions E1a of the pair of left and right lever members E10 can be inserted under the neck portion Q1a of the PET bottle Q1. Preferably, it is possible to hold and hang the PET bottle Q1 by the holding tool E1.

Further, in this case, as described above, the pitch P q of the PET bottle Q 1 is also arranged at a short pitch Pe, as shown in FIG. Therefore, the gripping tool E1 becomes more continuous, so that the PET bottle Q1 can be suitably prevented from falling or falling. That is, the PET bottle Q1 is not only gripped by one gripping tool E1 but may be gripped by a plurality of gripping tools E1 in some cases. Further, as described above, the gripping tools E1 are arranged so that the gap Le between the gripping tools E1 is 10% or less of the width Lq of the gripping portion of the PET bottle Q1. Therefore, the PET bottle Q1 does not fall into the gap Le between the grippers E1, so that the PET bottle Q1 can be suitably prevented from falling. Then, in a state where the PET bottle Q 1 is thus held by the holding tool E 1, by turning the attachment chain B 1, the PET bottle Q 1 is moved in the arrow direction shown in FIGS. 1 and 2. Transported to

Further, as the PET bottle Q1 is transported, as shown in FIG. 2, the selected PET bottle Q1 is extracted by the plurality of guide members F1 and distributed to the left and right. Specifically, as shown in FIG. 7, the guide members F1a and F1b are rotated by the expansion and contraction of each of the air cylinders F20 to extract the selected pin D12 and guide the guide. The guide member F1a to be performed moves to the PET bottle Q1 side, and the guide member F1b that is not guided retreats from the PET bottle Q1 side.

Therefore, the pin D 1 2 of the slider D 1 The PET bottle Q 1 is pulled out by being hooked on the guide member F 1 a and moved along the guide member F 1 a, and is shaken left and right by the movement of the plurality of guide members F 1. Divided. In addition, when any of the guide members F1 is retracted from the PET bottle Q1 side, the PET bottle Q1 proceeds straight.

In this way, the number of rows of the PET bottle Q1 is changed to a desired number. In this case, the number of rows to be changed is not particularly limited, and when the number of rows to be changed is large, the guide member F1 and the air cylinder F Add the number 20. In addition, the movement of the guide member F1 by driving the air cylinder F20 described above is performed so that the transfer speed of the PET bottle Q1 can be changed to a desired number of rows of the PET bottle Q1. 。Controlled by a controller (not shown) in consideration of the pitch or the situation on the upstream and downstream of the line.

Further, as described above, when the PET bottle Q1 moves along the guide member F1 for guiding, as shown in FIG. 10, as shown in FIG. Preferably, the moving angle is within ± 20 ° in order to maintain a smooth operation state of the device. Then, as shown in FIGS. 1 and 2, when the PET bottle Q1 is conveyed to the upper portion of the unloading conveyor J2, as shown in FIG. Insert between the open cams G2. When the slider D1 moves to the tops of the pair of open cams G2, as shown in FIG. 8, the upper end corner E1b outside the lever member E10 is opened and closed. As shown in FIG. 6, the gripper E1 is in an open state.

Accordingly, the gripping state of the PET bottle Q1 by the gripper E1 is released, and the PET bottle Q1 is placed on the surface of the unloading conveyor J2, as shown in FIG. As shown in the figure, the row is changed and dropped by a minute distance, and is conveyed by the unloading conveyor J2. Then, from that state, the slider D1 is lifted up along the drive wheel B1a to the return side (upper surface side) of the attachment chain B1 together with the link plate B10 and the guide rail C1. Then, the return side of the attachment chain B1 is pulled back to the side opposite to the direction of transport of the PET bottle Q1, and is used again for transporting the PET bottle Q1 above the supply conveyor J1. In addition, the traveling speed of the supply conveyor J1, the attachment chain B1, and the unloading conveyor J2 is substantially the same so that the transfer to each member is performed so that the rollover does not occur smoothly. Speed, preferably.

As described above, according to the configuration of the conveyed article line changing device A1 according to the present embodiment, the gripper E1 is fixed to the slider D1, and the PET bottle Q1 is gripped and lifted. The PET bottle Q1 is transported in a state where it is suspended and gripped. At the same time, the number of rows of the PET bottles Q1 is changed by moving the slider D1 in the horizontal direction at a predetermined ratio. In this case, the PET bottle Q1 is suspended and gripped by the gripper E1, and the PET bottle Q1 is smoothly moved and moved in the lateral direction. Can be prevented.

Therefore, high-speed operation of the transfer line can be performed. In addition, it is possible to smoothly cope with the case where the PET bottle Q1 is intermittently supplied in a state of being separated. In addition, since the gripper E1 is a method of suspending the PET bottle, the PET pot Q1 supplied from the supply conveyor J1 falls without being gripped in a state in which the PET bottle Q has fallen upstream, Since it is collected at the lower part, it is not necessary to remove the PET bottle Q1 from the device. And does not hinder line operation.

Further, in the gripping tool E1, since the gripping tool E1 can be switched between the gripping state and the open state by the rotation of the pair of lever members E10, the gripping tool E1 has a simple configuration. It becomes possible to switch between the gripping state and the open state of the tool E1.

Further, at this time, switching between the gripping state and the release state of the gripping tool E1 is performed by switching means using a cam mechanism including the gripping cam Gl and the release cam G2. Therefore, it is possible to smoothly switch between the gripping state and the open state of the gripper E1 with a simple configuration. The states of the gripping cam G1 and the release cam G2 viewed from above in each drawing show a developed shape.

Further, while the PET bottle Q1 is gripped by the gripper E1 and the transfer and the row are changed, the stability is high and the high-speed operation is possible.

Furthermore, the conveyor length can be made shorter than that of a conventional sorting and sorting device using a conveyor, so that the size of the device can be reduced. In addition, the equipment can be manufactured at low cost, and the late space in the plant can be reduced.

Note that the present invention is not limited to only the configuration of the present embodiment, and various embodiments are possible without departing from the gist of the present invention. For example, in the present embodiment, the configuration is such that two round bar-shaped guide rails C 1 are used for one slider D 1, but the present invention is not limited to this. A configuration using one guide rail formed into a square bar shape to prevent the rotation of 1 may be used.

Also, the sliding of the slider D 1 and the guide rail C 1 may be performed by using a bearing, a metal bush, or an oil-impregnated resin. If the slider D1 can smoothly slide on the guide rail, all of them are included.

In this embodiment, the PET bottle Q1 is configured to be conveyed. However, any bottle that can be hung by a holding tool, such as a bottle of milk, a milk bottle, or a mug-like container with a handle, may be used. If all are included.

Further, in the present embodiment, the PET bottle Q1 has a cylindrical shape. However, as shown in FIG. 11, even when a prismatic PET bottle Q2 is transported, the PET bottle Q1 is preferably used. Applicable. In this example, the PET bottle is used to mean a polyethylene terephthalate bottle.

Further, in the present embodiment, an example of the sorting device for sorting the PET bottles Q1 conveyed in a single row into a plurality of rows is shown, but the present invention is not limited to this, and various modes are possible. It is. For example: (a) Sorting a plurality of rows of PET bottles Q1 into a plurality of rows of PET bottles Q1. (Mouth) A collection of multiple rows of PET bottles Q1 into a single row of multiple PET bottles Q1. (C) A set of a plurality of rows of the above-mentioned PET bottles Q1 is collected into a single row of the above-mentioned PET bottles Q1. In the above (c) mode in which a plurality of rows of the PET bottles Q1 are assembled into a single row of the PET bottles Q1, the driving direction is reversed by using the configuration of the present embodiment as it is. It can be done by driving in the direction. In this case, the guide member F1 is disposed on the return side of the attachment chain B1, and when the PET bottle Q1 is gripped, the guide member F1 is positioned according to the position of the PET bottle Q1. Thus, the gripping tool E1 is already arranged in a state of being sorted.

Also, of course, the attachment chain B1, the slider Dl, the gripping cam Gl, the release cam G2, etc. It is set arbitrarily according to the weight, size, speed, etc. For example, if the conveyed article is relatively light, each of the above members is made of an oil-containing resin, and if the conveyed article is relatively heavy, the above members are made of steel, stainless steel, or the like. Configuration.

As a countermeasure for such a case where the conveyed article is relatively heavy, as shown in Fig. 13, guide rails C2 are arranged in two axes in the vertical direction. The attachment chain B2 and the slider D2 that engage with C2 can also be arranged in two axes in the vertical direction. In this case, since the guide rails C2 are arranged biaxially in the vertical direction, the allowable weight in the vertical direction can be increased, and the configuration is stronger against the weight of the conveyed goods.

The control of the electric motor (not shown) for driving the attachment chain B 1 and the air cylinder F 20 for rotating the guide member F 1 is performed by a switching operation visually performed by an operator, or an electric circuit or the like. Arbitrary, such as control by a microcomputer, may be used.

When changing the row of conveyed objects having different heights, the height of the frame H1 should be changed to make the height of the gripper E1 correspond to the conveyed object. Is possible.

Further, as shown in FIG. 12, when the PET bottle Q1 is transferred from the supply conveyor J1 to the gripper E1, or the PET bottle Q1 is transferred from the gripper E1 to the unloading conveyor J2. For example, when the Q1 is relocated, the support fork S1, whose thickness gradually changes, can be provided below the neck Qla of the PET bottle Q1. With this configuration, the above operation can be performed more smoothly and reliably.

Further, in the biasing member and the switching means of the gripper E1, the present embodiment is also used. In the configuration described above, as described above, the configuration is made of the tension spring (spring E 20) and the force (the grip cam G 1 and the release cam G 2). However, the configuration is not limited to this. Embodiments are possible. For example, the urging member may be configured to obtain a urging force for urging the gripper E1 by a compression spring, a leaf spring, or a repulsive force of a magnet, or an attraction force. The gripping tool E1 can be switched smoothly between a holding state and an open state by a repulsive force or an attractive force of a magnet, a configuration in which a pushing member is brought into contact with the gripping tool E1 by a solenoid to open and close, and the like. Any mechanism that can be opened and closed and that can hold the grip state is included.

Further, an example in which the repulsive force of a magnet is used as the urging member will be specifically described. As shown in FIG. 14, a magnet M is provided at a position inside the upper ends of the left and right lever members E 10. 10 and a convex portion D30 is formed in the concave portion D14a of the flange D14, and a portion of the convex portion D30 facing the magnet M10 is A magnet M 20 with the direction of the magnetic pole set so as to repel the polarity of the magnet M 10 is provided. Therefore, it is possible to adopt a configuration in which the resilient force of the magnet M10 and the magnet M20 constantly urges the lever member E10 in the closing direction.

Further, specifically describing an example in which the attraction force of a magnet is used as the urging member, as shown in FIG. 15, the portions inside the central portion of the left and right lever members E 10 are respectively provided. The magnets M30 and M40 are arranged in opposite directions so that the magnetic poles attract each other. Therefore, the lever member E10 may be attracted to each other by the attractive force of the magnet M30 and the magnet M40, and the lever member E10 may be constantly urged in the closing direction. it can.

Further, an example in which a repulsive force of a magnet is used as the switching means will be specifically described. Then, as shown in FIG. 15, magnets M50 and M60 are disposed outwardly at the upper end corners Elb of the left and right lever members E10. Also, at the position facing the magnets M50 and M60 at the holding position or the opening position of the PET potter Q1 where the above-mentioned holding tool E1 needs to be switched, the above-mentioned magnet M50 is provided respectively. The magnets M70 and M80 are arranged so that the magnetic poles repel each other. Therefore, the magnets M50, M60 and the magnets M70, M80 repel each other at the gripping position or the open position of the PET bottle Q1, thereby gripping the lever member E10. Since the upper end corner E1b of the lever member E10 is pushed in by overcoming the urging force of the urging member biasing to the side, the lever member E10 can be turned to the open side.

In the case where the biasing member obtains a biasing force by a repulsive force or an attractive force of a magnet, a simple and inexpensive configuration without fear of cutting or the like can be provided. In a configuration in which the means utilizes the repulsive force or the attractive force of the magnet, the switching means is capable of not generating abrasion powder because of non-contact and suppressing the impact on the holding tool. Further, in FIG. 15, the left and right lever members E 10 are both pivotally supported by a single pin D 16, but the pin D 16 may be shared as described above. It is possible, and with such a configuration, it is possible to configure an inexpensive and simple gripping tool. Industrial applicability

INDUSTRIAL APPLICABILITY As described above, the present invention is most suitable for a conveyed product line changing apparatus that can surely prevent a conveyed product from falling even if the line is conveyed in a high-speed operation. Even if the conveyed product falls, it is suitable for a conveyed product line changing device that does not need to stop the line.

Claims

The scope of the claims

1. A pair of transmission members wound in a drive wheel and a driven wheel and formed in a continuous loop shape for transmitting a rotational force from the drive wheel to the driven wheel, and a predetermined interval between the pair of transmission members. A plurality of guide rails to be connected; a slider slidably locked to the guide rails and movable along the guide rails; and a gripper for gripping and suspending a transportable product fixed to the sliders. A gripper capable of switching between a gripped state and an open state of the conveyed article; and a conveyer in a state where the conveyed article is suspended and held by the gripper, and at the same time, the slider And a change mechanism for changing the row of the conveyed articles by moving the conveyed articles horizontally at a predetermined ratio.

2. An urging member for urging the pair of lever members toward the gripping side so that the gripping tool always holds a pair of rotatably pivoted lever members, and an urging member for urging the pair of lever members. 2. The transported article sequence changing device according to claim 1, further comprising: a switching unit configured to switch between a gripping state and an open state of the gripping tool by a rotation operation.

3. The apparatus according to claim 2, wherein the urging member obtains an urging force by a repulsive force or an attractive force of a magnet.

4. The apparatus according to claim 2, wherein the switching means is performed by a cam mechanism.

5. The apparatus according to claim 2, wherein the switching means is performed by a biasing force due to a repulsive force or an attractive force of a magnet.