JP2006219206A - Conveyed material delivery device of roller conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveyed material delivery device, improving the work efficiency of delivering conveyed materials one by one to the leading end of a conveying passage, and taking the conveyed materials from the leading end of the conveying passage. <P>SOLUTION: This conveyed material delivery device 3 is installed in a gravity type roller conveyer 1 having a conveying passage where a plurality of free rollers 10 are laterally disposed. The device is provided with a rocking member 31 longitudinally extended on the lower surface side of the conveying passage and journaled to rock at the longitudinally intermediate position by a spindle 30 and actuating means 34, 35, 36 for actuating the above rocking member. The leading end of the rocking member 31 is provided with a stopper part 32 projected above the conveying passage when the leading end rises to regulate the movement of a first conveyed material 2a on the front side, and the trailing end of the rocking member 31 is provided with a brake part 33 brought into press contact with the plurality of free rollers 10 where a second conveyed material 2b following the first conveyed material 2a is placed when the trailing end rises to inhibit the rotation of the free rollers and regulate the movement of the second conveyed material 2b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a conveyed product feeding apparatus installed on a Kravity type roller conveyor.

  Conventionally, in a vehicle assembly line or the like, a craft roller type conveyor is used as a storage for supplying assembly components such as a battery. As shown in FIG. 7, this type of roller conveyor constitutes an inclined conveyance path in which a plurality of free rollers 10 are provided horizontally, and the assembly component (hereinafter referred to as conveyance object) 2. Is transported naturally from a high rear position to a low front position. The end panel 13 provided at the front end of the transport path stops the movement of the first transported object 2 and a plurality of subsequent transported objects They are placed in a line on the transport path. Then, by removing the leading transported object 2, the transported object 2 is sequentially pushed out to the front end position of the transport path.

  By the way, when taking out the conveyed product 2 from the front end position of a conveyance path, the following malfunctions arise. As a jig for taking out the conveyed product from the conveyance path, a jig for sandwiching and lifting the conveyed product from both sides is generally used. However, due to the shape of the outer periphery of the conveyed product and the convenience of arrangement of the conveyed product depending on the assembly location, etc. In some cases, the transported object is sandwiched and lifted from both front and rear sides in the transport direction. In such a case, since there is no gap between the first transported object 2 and the succeeding one, the jig 9 for lifting the transported object 2 cannot be used. Further, since a load is applied to the first transported object 2 from the subsequent transported object, a large force is required for taking out. Therefore, a transport object feeder is attached to the roller conveyor so as to form a gap between the head and the subsequent second transport object 2 to move the second and subsequent transport objects 2. Be regulated.

There exists a thing described in the following patent document 1 as the said conventional conveyed product feeder. As shown in FIG. 8, a swing member 80 is provided below the roller conveyor. The swing member 80 is pivotally supported by a support shaft 81 so that the front and rear intermediate positions are swingable. The first stopper portion 71 is provided that protrudes on the conveyance path through the clearance of the free roller 10 and restricts the forward movement of the conveyed product 2a on the front side. A second stopper portion 72 that restricts the forward movement of the rear transport object 2b that protrudes on the road and follows the front transport object 2a is provided. The swing member 80 is driven to swing by the actuator 60 to release the restriction on the movement of the front-side transported object 2a and restrict the movement of the rear-side transported object 2b so that only the front-side transported object 2a is moved. Yes. According to this, a conveyed product can be intermittently sent to the front end of a conveyance path one by one, and a gap can be provided between the conveyed products 2a and 2b.
Japanese Patent Laid-Open No. 4-96410 (FIG. 4)

  However, in the conventional conveyed product feeder, the pitch between the first and second stopper portions 71 and 72 must be matched to the size (longitudinal length) of the conveyed items 2a and 2b and the pitch of the free rollers 10. There are many restrictions on design and installation. When used in a conveyor for supplying a battery or the like of the production line, the size (front / rear length) of the battery varies depending on the type of vehicle to be assembled. Therefore, the pitch between the first and second stopper portions 71 and 72 is changed each time. Must change. Further, the second stopper portion 72 must be inserted between the front and rear transport objects 2a and 2b, and can be inserted between the adjacent transport objects 2a and 2b in contact with each other. If the transported objects 2a and 2b are misaligned, the stopper 72 may hit the transported objects 2a and 2b and damage them, or the rear transported object 2b may not be regulated accurately.

  Therefore, in view of the above circumstances, the present invention requires less design and installation restrictions, is not affected by changes in the size (longitudinal length) of the conveyed object, does not damage the conveyed object, and conveys the conveyed objects one by one. It is an object of the present invention to provide a conveyed product feeding device for a roller type roller conveyor capable of improving the operability of the work of taking out a conveyed product from the front end of the conveying path.

  The present invention is installed on a Kravity type roller conveyor that transports a conveyed product from a high rear side to a low front side along an inclined conveyance path in which a plurality of free rollers are installed horizontally. And a swing member that extends in the front-rear direction along the lower surface side of the transport path and is pivotally supported by a support shaft so that the intermediate position between the front and rear is swingable. And a stopper portion that restricts the movement of the first transported object that protrudes on the transport path and moves forward in the transport direction when the front end is raised. On the other hand, at the rear end, when the rear end is raised, each free roller is brought into pressure contact with a plurality of the free rollers on which the second conveyed item following the first conveyed item is placed from below. Brake part for preventing the rotation of the second transported object Provided (claim 1). Since the movement of the first transported object is restricted by the stopper part and the stopper part is released to move the first transported object, the brake part restricts the movement of the second transported object. Only the conveyed product can be moved. In this case, since the brake unit presses the free roller supporting the second conveyed product from below to prevent rotation and restricts the movement of the second conveyed item, the first and second conveyances are performed. It is not restricted by the connecting position of the objects or the position of the gap between the rollers, and can cope with a change in the size (front and back length) of the conveyed object without damaging the conveyed object.

  The brake portion is provided with a sheet material having a pressure contact surface that presses against the peripheral surfaces of the plurality of free rollers and prevents the rotation of the free rollers by frictional resistance. It is suitable for preventing the rotation of a plurality of free rollers.

  As the actuating means, an urging member for urging the rear end of the oscillating member to the raised position and a base end are connected to the oscillating member, and the front end of the oscillating member is moved against the urging member. An operation handle for moving to the raised position and a holding member for holding the operation handle at the front end raised position of the swinging member are provided. The swing member can be operated by an operating means having a simple structure.

  The swing member is configured to hold the first transported object at a position spaced from the front end of the transport path by the stopper when the front end is moved to the raised position. By switching the oscillating member to the operating state of the brake unit by the operating means, only the first transported object is sent to the front end position of the transport path, and the first transported object is the front end of the transport path. After moving to the position, the swinging member is switched to the operation state of the stopper portion to advance the second transported object to a position regulated by the stopper portion, and the subsequent transported object follows the second transported object. (Claim 4). The transported objects can be sent one by one to the front end of the transport path at intervals.

  According to the conveyed product feeding apparatus of the present invention, the pitch between the member that regulates the first conveyed item and the member that regulates the second conveyed item is accurately set to the pitch of the free roller and the longitudinal length of the conveyed item. There are few restrictions on the design and installation of equipment that must be matched, and even if the size (front / rear length) of the transported object changes, the movement of the transported object can be regulated accordingly. In this way, it is possible to feed the conveyed objects one by one to the front end of the conveying path and improve the workability of taking out the conveyed object from the front end of the conveying path.

  1 to 6, an embodiment in which the present invention is applied to a gravity type roller conveyor used as a storage for supplying assembled parts 2 such as batteries in a vehicle production line will be described. As shown in FIGS. 1 to 4, the roller conveyor 1 includes a plurality of free rollers with a slight interval in the front-rear direction between the left and right frame members 11 arranged in parallel at a predetermined interval. -A structure in which the roller 10 is horizontally arranged so as to be rotatable, and a plurality of free rollers 10 form a conveyance path. Each free roller 10 has a diameter of about 38 mm and is installed at a pitch of 50 mm.

  The roller conveyor 1 has a plurality of support legs 15 provided at the front end and the rear end (only the support legs 15 at the front end are shown in the figure) so that the roller conveyor 1 is inclined forward from the rear end to the front end. It is supported. The roller conveyor 1 has an inclination angle of about 2 ° to 5 °, and naturally feeds a transported object 2 such as a battery along the transport path to the front end side. On both the left and right sides of the transport path, guide rails 12 are provided on the upper portions of both frame members 11 to prevent the transported object 2 from shifting laterally. An end panel 13 is installed between the front end terminals of both frame members 11 at the front end of the conveyance path, and the conveyed product 2 is held at the front end position of the conveyance path by the end panel 13.

  On the lower surface side of the roller conveyor 1, a conveyed product feeding device 3 for controlling the movement of the conveyed product 2 on the conveying path is provided at a position near the front end. Hereinafter, details of the conveyed product feeder 3 will be described. As shown in FIGS. 1 to 6, the conveyed product feeding device 3 includes a base erected between the lower ends of a pair of left and right vertical plate-like brackets that project downward from the left and right frame members 11 of the roller conveyor 1. The frame 302 is assembled.

  The conveyed product feeding device 3 includes a seesaw-like rocking member 31 that extends in the front-rear direction along the lower surface of the conveyance path, and that can be alternately raised and lowered at the front end and the rear end around the front-rear intermediate portion. The swing member 31 is made of a metal plate extending in the front-rear direction along the lower surface of the roller conveyor 1 and has a lateral width that is narrower than the conveyance path of the roller conveyor 1 and bends downward to the left and right side edges. It has a pair of left and right vertical flanges. A support shaft 30 that passes through the left and right vertical flanges in series is laterally provided in the swing member 31 at an intermediate position in the front-rear direction. The support shaft 30 is welded to both vertical flanges. It is.

  The both ends of the support shaft 30 are rotatably supported by a pair of bearings 303 installed on the left and right sides of the upper surface of the base frame 302 so that the swing member 31 can swing around the support shaft 30. .

  The front end of the swing member 31 is bent upward from the front edge thereof, and protrudes on the transport path from the gap between the free rollers 10 of the roller conveyor 1 when the front end of the swing member 31 is raised. A vertical plate-like stopper portion 32 is formed which comes into contact with and engages with the lower front edge portion of the conveyed product 2 moving on the road and stops its movement. The stopper portion 32 is provided such that the stop position of the conveyed product 2 is a position 1.5 to 2 times the longitudinal length of the conveyed product 2 from the front end of the roller conveyor 1. A cushion material for the free roller is attached to the boundary between the swing member 31 and the stopper portion 32 from the upper surface of the swing member 31 to the wall surface of the stopper portion 32 on the inner corner side (FIG. 6).

  On the other hand, the rear end of the swing member 31 is brought into pressure contact with the free roller 10 from the lower side when the rear end is raised, and the free roller 10 is prevented from rotating by frictional resistance and engaged with the stopper portion 32. A brake unit 33 is provided to restrict the movement of the second transported object 2b following the first transported object 2a. The brake unit 33 has a structure in which a member having a large frictional resistance, for example, a thick sheet material 331 made of urethane is attached to the upper surface of the rear end of the swing member 3, and a plurality of ( In the illustrated example, three free rollers 10 are provided to prevent rotation.

  As an operating means for swinging the swinging member 31 in the conveyed product feeding device 3, the rear end of the swinging member 31 is raised, and a biasing force is applied to bias the brake portion 33 in a direction to press the free roller 10. A member 34 is provided. The urging member 34 is a coil spring, and is installed between the lower surface of the rear end of the swing member 31 and the overhanging portion 304 that protrudes rearward from the base frame 302.

  An operating handle 35 for operating the front end of the swinging member 31 to the raised position against the biasing force of the spring member 34 is provided as an operating means for the swinging member 31. The operation handle 35 is provided with a handle bracket 351 that protrudes downward from the frame member 11 from the front end portion of the swinging member 31, extends laterally from the lower end thereof to reach the outer position of the frame member 11, and bends forward. A pipe member 352 projecting forward from the front end of the frame member 11 is connected to the front end of the pipe member 352, and a grip for an operator is provided. By pulling the operation handle 35 upward, the swing member 31 is moved to the front end raised position.

  Further, as the actuating means, there is provided a holding member 36 for holding the operating handle 35 in the lifted position so that the swinging member 31 is moved to the front end raised position by the operating handle 35 and the swinging member 31 is held in this state. . As shown in FIG. 5, the holding member 36 is provided with a box-shaped case portion 361 on the outer surface of the front end of the frame member 11 on the operation handle 35 side, and the case portion 361 has a U-shaped groove that opens upward. 362 is formed. The vicinity of the grip of the operation handle 35 is inserted into the groove 362.

  A holding plate 364 is provided on the upper portion of the case portion 361 so as to be slidable in the left-right direction. The holding plate 364 can be switched between a projecting position in which the front end of the plate projects into the groove so as to close the upper opening of the groove 362 and a retracted position in which the front end of the plate is retracted from the groove 362. The front end of the holding plate 364 is a tapered surface whose lower surface is tapered toward the front end. Further, the holding plate 364 is always urged on the protruding position side by an urging member (not shown). Further, the holding plate 364 is provided with an operation knob 365 for allowing the operator to move the holding plate 364 to the retracted position against the urging force.

  When the operation handle 35 in the groove 362 is pulled up, the holding plate 364 comes into contact with the tapered surface and is pushed by the operation handle 35 to move to the retracted position. When the operation handle 35 passes over the plate tip of the holding plate 364 and is above the groove 362, the holding plate 364 returns to the protruding position by the biasing force, and the plate tip of the holding plate 364 protruding into the groove 362 supports from below. The operation handle 35 is held in the raised position.

  The roller conveyor 1 provided with the conveyed product feeding device 3 is set in a state where the front end stopper portion 32 protrudes on the conveyance path with the operating handle 35 pulled up and the swing member 31 at the front end raised position. In this state, when a plurality of transported objects 2 are placed on the transport path from the rear side, the transported objects 2 are sent to the front side, and as shown in FIGS. 1 and 6A, the first transported object 2a is transported. The movement stops when it comes into contact with the stopper portion 32 at a position in front of a predetermined distance from the front end of the road. The succeeding second conveyed product 2b comes into contact with the first conveyed product 2a and stops there. Thereafter, a plurality of transported objects 2 are connected.

  Subsequently, in order to pick up the first transported object 2a from the transport path from this state, the first transported object 2a is moved to the front end position of the transport path as shown in FIGS. 2 and 6B. In this case, by switching the holding plate 364 to the retracted position by the operation knob 365 of the holding member 36, the restriction of the operation handle 35 is released, and the rear end of the swinging member 31 is lifted by the urging member 34 so that the front end is The stopper part 32 descends below the transport path. Thereby, the restriction | limiting of a movement is cancelled | released and the 1st conveyed product 2a moves to the front, and reaches the position contact | abutted to the end plate 13 of a conveyance path front end.

  At the same time, the brake portion 33 at the rear end of the swinging member 31 is pressed against the plurality of free rollers 10 on which the second conveyed product 2b is placed from below to prevent these rotations. The transported object 2b is restricted from moving forward and is left on the spot. After the first transported object 2a moves to the front end position of the transport path, the operation handle 35 is pulled up to return the stopper 32 to the state where the stopper portion 32 protrudes on the transport path with the swing member 31 as the front end raised position. As a result, the second conveyed product 2b is released from the restriction by the brake portion 33 and moves forward, and comes into contact with the stopper portion 32 and stops.

  Thus, the conveyed product feeder 3 can send the conveyed products one by one to the front end position of the conveying path, and between the first conveyed object 2a and the second conveyed object 2b moved to the conveying path front end. Since a gap can be formed, it is possible to use a jig 9 (FIG. 7) that sandwiches the first conveyed product 2a from the front end of the conveying path in the front-rear direction. Moreover, since the load from the 2nd conveyed product 2b is not applied to the 1st conveyed product 2a, the force picked up is required minimum.

  In order to restrict the movement of the second conveyed product 2b, the conveyed product feeding device 3 is not a stopper that protrudes on the conveying path and engages the conveyed item directly at the rear end of the swing member 31 as in the prior art. In addition, since the brake unit 33 that prevents the rotation of the roller 10 by pressing against the free roller 10 on which the conveyed product is placed is pressed from the lower side, it is necessary to insert it into the gap of the free roller 10. There is no need for such an accuracy that a stopper portion is inserted between the first and second transported objects 2a and 2b arranged in the front-rear direction. Moreover, since it does not hit the conveyed product 2 directly, there is no possibility of damaging the conveyed product 2. Since the brake portion 33 is pressed against the plurality of free rollers 10 to prevent these rotations, the restricted range can be set wider, even if the longitudinal length of the conveyed product 2 changes slightly. This can be handled.

  In the conveyed product feeding device 3, if the stopper portion 32 at the front end of the swinging member 31 is aligned with the gap between the free rollers 10, the brake portion 33 at the rear end of the swinging member 31 becomes the second conveyed product 2b. A rough layout corresponding to can be used, and there are few restrictions on design and installation. Further, since the actuating means of the swing member 31 is constituted by the biasing member 34 and the operation handle 35, the structure can be simplified and the running cost is not required.

  The above-described embodiment is an example and does not limit the scope of the present invention, and the scope of the present invention includes various modifications and changes to the above-described embodiment. For example, in the above-described embodiment, the transport object feeding device is provided at a position behind the front end of the transport path so that the transport object is fed to the front end of the transport path one by one and a gap is provided between the subsequent transport objects. However, a conveyed product feeding device may be provided at the front end position of the conveyance path, and the conveyed products may be sent out one by one from the conveyance path front end. Further, the swing member actuating means may be actuated by an actuator such as electric or air pressure or hydraulic pressure.

It is a principal part side view of the clarity type roller conveyor provided with the conveyed product feeder of this invention, The 1st and 2nd conveyed product is the position before a front end of a conveyance path by the said conveyed product feeder. It is a figure which shows the state which controlled. FIG. 2 is a side view of the main part of the above-described Kravity type roller conveyor corresponding to FIG. 1, feeding the first transported object to the front end position of the transport path, and transporting the second and subsequent transported objects by the transported object feeder. It is a figure which shows the state controlled by the position before this rather than the front end of a road. It is a principal part top view of the above-mentioned Kravity type roller conveyor. It is a front view of the above-mentioned crafty type roller conveyor. It is operation | movement explanatory drawing of the holding member which is an operation means of the said conveyed product feeding apparatus. FIG. 6A shows the operation of the transported article feeding device, FIG. 6A shows a state in which the movement of the first transported object is regulated, and FIG. 6B shows the release of the movement of the first transported object. It is a figure which shows the state which controlled the movement of the 2nd conveyed product. It is a principal part side view of the conventional Kravity type roller conveyor. It is a schematic side view of the conventional conveyed product feeding apparatus used for a clarity type roller conveyor.

Explanation of symbols

1 Kravity type roller conveyor
10 Free Roller
2 Transported goods
2a 1st conveyed product 2b 2nd conveyed product 3 conveyed product feeding apparatus 30 Support shaft 31 Oscillating member 32 Stopper part 33 Brake part 331 Sheet material 34 Biasing member (actuating means)
35 Operation handle (actuating means)
36 Holding member (actuating means)

Claims (4)

Conveyed goods installed on a Kravity-type roller conveyor that conveys conveyed goods from a rear side having a high position to a front side having a low position along an inclined conveyance path in which a plurality of free rollers are installed horizontally. A feeding device,
A swing member that extends in the front-rear direction along the lower surface side of the transport path and is pivotally supported by the support shaft so as to be swingable by a support shaft, and an operating means for swinging the swing member are provided.
The front end of the swing member is provided with a stopper portion that protrudes on the transport path when the front end is raised and restricts the movement of the first transported object located on the front side in the transport direction,
At the rear end, when the rear end is raised, a plurality of free rollers on which the second transported material following the first transported material is placed are pressed from below to rotate the free rollers. A transporter feeding device for a roller conveyor, wherein a brake unit is provided for preventing movement of the second transported object and preventing movement of the second transported object.   2. The roller according to claim 1, wherein the brake portion is provided with a sheet material having a pressure contact surface that presses against the peripheral surfaces of the plurality of free rollers and prevents rotation of the free rollers by frictional resistance. A transporter for a conveyor.   As the actuating means, an urging member for urging the rear end of the oscillating member to the raised position and a base end are connected to the oscillating member, and the front end of the oscillating member is moved against the urging member. 3. A conveyed product feeding device for a roller conveyor according to claim 1, further comprising an operation handle for moving to the raised position and a holding member for holding the operation handle at the front end raised position of the swinging member.   The swing member is configured to hold the first transported object at a position spaced from the front end of the transport path by the stopper when the front end is moved to the raised position. By switching the oscillating member to the operating state of the brake unit by the operating means, only the first transported object is sent to the front end position of the transport path, and the first transported object is the front end of the transport path. After moving to the position, the swinging member is switched to the operation state of the stopper portion to advance the second transported object to a position regulated by the stopper portion, and the subsequent transported object follows the second transported object. 4. A conveyed product feeding device for a roller conveyor according to claim 1 to 3.

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