JP2007204180A - Container eliminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container eliminating device capable of preventing a discharged container from falling down and contacting the following container and of stably discharging a container without rotating it. <P>SOLUTION: This container eliminating device is provided with a rotating shaft 22 extending to the height direction of a carried container 1; a rotating member 30 mounted to the rotating shaft 22; a rotating roller 34 mounted to one end part of the rotating member 30; and a servomotor 20 for positioning the rotating roller 34 on a carrying path by rotating the rotating member 30 around the rotating shaft 32 and for moving the carried container 1 to outside of the carrying path by making the carried container 1 contact with the rotating roller 34. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a container rejection apparatus that excludes containers to be conveyed from a conveyance path, and more particularly to a container exclusion apparatus that excludes defective containers from a conveyance conveyor to an adjacent discharge conveyor.

  Among the containers that are placed on the conveyor and conveyed, for example, there is a container exclusion device as an apparatus that excludes defective containers from the conveyor to the adjacent discharge conveyor. Examples of containers include PET bottles, glass bottles, cans, etc., and container exclusion devices that move plates and brushes on a conveyor and discharge the plates and brushes in contact with the containers are known (for example, , See Patent Document 1).

  However, in the case of a container exclusion device using a plate or brush, a large frictional resistance is generated when the plate or brush contacts the container, and the discharge container cannot be smoothly moved from the transfer conveyor to the discharge conveyor. In addition, when the frictional resistance at the time of container contact is large as described above, it is greatly affected when the transport speed of the transport conveyor fluctuates. In particular, when the container is transported slowly, the braking action due to the frictional resistance at the time of container contact becomes large, and the container contacts the subsequent container. Furthermore, if the frictional resistance at the time of container contact is large, a rotational moment acts on the discharge container, the container is discharged while rotating, and the container becomes unstable and falls down.

JP 2004-115205 A

  The present invention has been made in view of the problems of the prior art as described above, and prevents the container to be discharged from falling and contacting the subsequent container, and can stably discharge without rotating the container. It aims at providing a container exclusion apparatus.

  According to one aspect of the present invention, there is provided a container evacuation apparatus that prevents a container to be discharged from falling and contacts a subsequent container, and can stably discharge the container without rotating the container. This container rejection apparatus can exclude the container to be conveyed from the conveyance path. The container rejection apparatus includes a rotating shaft extending in the height direction of the container to be conveyed, a rotating member attached to the rotating shaft, and a rotating roller attached to one end of the rotating member. Further, the container exclusion device rotates the rotating member around the rotating shaft to position the rotating roller on the transport path, and brings the transported container into contact with the rotating roller so as to be outside the transport path. A rotation mechanism for moving to is provided.

  An urging means (for example, a coil spring) that urges the rotating roller in a direction opposite to the conveying direction of the container may be further provided. Further, a position adjusting mechanism for adjusting the position of the rotating roller and an inclination angle adjusting mechanism for adjusting the inclination angle of the rotating roller may be further provided. Furthermore, the said conveyance path | route can be comprised by the conveyance conveyor which conveys a container to a linear direction.

  According to the present invention, since the rotating roller is brought into contact with the container, the frictional resistance at the time of contact is reduced, and the loss of the speed component of the container along the conveying direction due to the contact can be reduced. For this reason, the container to discharge becomes very difficult to fall down. Further, since the container is discharged without almost losing the velocity component of the container along the transport direction, the possibility that the discharged container contacts the subsequent container can be extremely reduced. Further, since the rotating roller is brought into contact with the container, the rotating moment does not act on the container when it comes into contact with the container, and the container can be discharged stably without rotating.

  Hereinafter, an embodiment of a container exclusion device according to the present invention will be described in detail with reference to FIGS. 1 to 5B. In FIG. 1 to FIG. 5B, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a plan view showing a basic configuration of a container rejection apparatus according to an embodiment of the present invention. As shown in FIG. 1, a plurality of containers 1 made of, for example, glass bottles are placed on a transport conveyor 2 in an upright state with a predetermined interval, and these containers 1 are driven by the transport conveyor 2. It is conveyed in the direction of the arrow in FIG. Thus, in this embodiment, the conveyance route of a container is comprised by the conveyance conveyor 2 which conveys a container to a linear direction.

  A discharge conveyor 3 for discharging the defective containers 1a is disposed adjacent to the transfer conveyor 2, and is set to be driven at an arbitrary transfer speed ratio between the transfer conveyor 2 and the discharge conveyor 3. In addition, a container removing device 4 is installed adjacent to the transport conveyor 2 to exclude the defective containers 1 a from the transport conveyor 2 to the discharge conveyor 3.

  FIG. 2 is a longitudinal sectional view of FIG. As shown in FIG. 2, the container exclusion device 4 is attached to the first frame 12 via a first frame 12 that is attached to a support frame 10 that supports the conveyor 2 so as to be movable up and down, and a rod 14 that extends in the horizontal direction. And a second frame 16 attached thereto. The second frame 16 includes an upper frame 16 a and a lower frame 16 b, and the upper frame 16 a and the lower frame 16 b are connected to each other by a support shaft 18. With such a configuration, the upper frame 16a is rotatable about the support shaft 18 with respect to the lower frame 16b.

  As shown in FIG. 2, an AC servo motor 20 is installed on the upper portion of the upper frame 16 a, and a rotating shaft 22 is connected to the rotating shaft of the servo motor 20. The rotating shaft 22 extends in the height direction (that is, the vertical direction) of the container 1 to be conveyed. Further, a bearing case 28 that houses bearings 24 and 26 is attached to the upper frame 16a, and the rotating shaft 22 is rotatably supported by these bearings 24 and 26.

  3 is an enlarged cross-sectional view showing a lower end portion of the rotary shaft 22, and FIG. 4 is a plan view. As shown in FIGS. 3 and 4, a plate-like rotating member 30 is fixed to the lower end of the rotating shaft 22, and a rotating roller 34 that is rotatable around a shaft 32 is attached to the tip of the rotating member 30. It has been. In such a configuration, when the servo motor 20 is driven, the rotating shaft 22 rotates, and the rotating member 30 rotates about the rotating shaft 22. That is, the servo motor 20 rotates the rotating member 30 around the rotating shaft 22 to position the rotating roller 34 on the transport conveyor 2, and the container 1 to be transported is brought into contact with the rotating roller 34 so that the outer side of the transport conveyor 2. It functions as a rotation mechanism that moves to. The rotation speed of the rotating member 30 can be adjusted by adjusting the pulse interval of the servo motor 20, and the rotation angle can be adjusted by adjusting the pulse amount.

  As shown in FIG. 3, a coil spring 36 is disposed above the rotating member 30 with the rotating shaft 22 inserted therein. A pin 38 extending vertically is provided at the end of the rotating member 30 opposite to the rotating roller 34, and one end of a coil spring 36 is fixed to the pin 38. The other end of the coil spring 36 is fixed to a pin 42 of a spring fixing portion 40 disposed above the coil spring 36. By this coil spring 36, the rotating roller 34 is urged in a direction opposite to the conveying direction of the container 1. Thus, the coil spring 36 functions as a biasing unit that biases the rotating roller 34 in the direction opposite to the conveying direction of the container 1.

  A position adjustment handle 44 as a position adjustment mechanism for adjusting the vertical position of the second frame 16 is provided at the lower end of the first frame 12. By rotating the position adjusting handle 44, the second frame 16 is moved up and down with respect to the support frame 10, and the vertical positions of the rotating member 30 and the rotating roller 34 can be adjusted. A position adjusting handle 46 as a position adjusting mechanism for adjusting the horizontal position of the second frame 16 is provided at the end of the rod 14 connecting the first frame 12 and the second frame 16. By rotating the position adjusting handle 46, the second frame 16 can be moved in the horizontal direction with respect to the first frame 12, and the horizontal position of the rotating member 30 and the rotating roller 34 can be adjusted. ing.

  Further, one end of a rod 50 inserted through the rod insertion portion 48 of the upper frame 16a is rotatably attached to the lower frame 16b. An inclination angle adjustment handle 52 as an inclination angle adjustment mechanism for adjusting the inclination angle of the rotating member 30 is provided at the other end of the rod 50. By rotating the tilt angle adjusting handle 52, the upper frame 16a is rotated about the support shaft 18, and the tilt angles of the rotating member 30 and the rotating roller 34 can be adjusted.

  As shown in FIG. 1, a pair of container detection sensors 5, 5 are arranged on the upstream side of the container exclusion device 4 with the conveyance conveyor 2 interposed therebetween, and the containers conveyed by the container detection sensors 5, 5 The position is detected. A container inspection device (not shown) is installed on the upstream side of the container detection sensors 5 and 5, and the container inspection device inspects whether the container to be transported is a good product or a defective product.

  Next, operation | movement of the container exclusion apparatus 4 comprised as mentioned above is demonstrated. When a container rejection signal for eliminating defective containers is input from the container inspection apparatus installed on the upstream side of the conveyor 2 to the container rejection apparatus 4, the position of the defective containers is detected by the container detection sensors 5 and 5, and servo The motor 20 is driven. The rotating member 30 attached to the rotating shaft 22 is rotated by driving the servo motor 20, and the rotating roller 34 of the rotating member 30 is moved to the contact position (position shown in FIG. 1) on the conveyor 2. The rotating roller 34 is kept stationary at this contact position. Then, as shown in FIGS. 5A and 5B, the defective container 1a conveyed by the conveyor 2 is brought into contact with the rotating roller 34 of the rotating member 30, and the traveling direction thereof is changed. 2 is transported to a discharge conveyor 3 arranged adjacent to 2.

  As described above, in this embodiment, since the rotating roller 34 that is rotatable about the shaft 32 is brought into contact with the defective container 1a, the frictional resistance at the time of contact is reduced, so that the container along the conveying direction by contact is reduced. The loss of the speed component can be reduced. For this reason, the defective container 1a to be discharged is very difficult to fall down. Further, as shown in FIG. 5 (b), since the impact at the time of contact with the defective container 1a is absorbed by the coil spring 36, the above-described effect of preventing the container from falling is improved. Further, since the defective container 1a is discharged without almost losing the velocity component of the container along the transport direction, the possibility that the discharged defective container 1a comes into contact with the subsequent container can be extremely reduced. Further, since the rotating roller 34 that is rotatable around the shaft 32 is used, when the rotating roller 34 comes into contact with the defective container 1a, no rotational moment acts on the defective container 1a, and the defective container 1a is not rotated. Can be discharged.

  After a certain period of time has elapsed since the defective container 1a contacts the rotating roller 34 of the rotating member 30, the servo motor 20 is driven to rotate the rotating member 30 so that the rotating roller 34 is moved away from the conveying conveyor 2. Move to. In a normal state, since the rotation roller 34 is located at this retracted position, a non-defective container passes through the container removal device 4 and is directly conveyed by the conveyor 2 without contacting the rotation roller 34.

  As described above, by rotating the position adjusting handle 44, the vertical position of the rotary member 30 and the rotary roller 34 can be adjusted, so that the rotary roller can be placed at any position along the height direction of the container. 34 can be arranged. Thus, according to the container exclusion device 4 in the present embodiment, it is possible to flexibly cope with a change in the height of the container.

  Moreover, since the contact position on the conveyance path of the rotation member 30 can be changed by changing the rotation angle of the servo motor 20, the contact position can be appropriately set according to the conveyance speed, and the container can be conveyed. It can respond flexibly to changes in speed. Furthermore, by appropriately setting the spring constant of the coil spring 36, the amount of movement of the container in the direction perpendicular to the conveying direction can be changed, so that the container discharge destination can be set according to the inspection determination in the container inspection apparatus. It is also possible to change.

  In the present embodiment, since the traveling direction of the container is changed by the rotating roller 34 stationary with respect to the container to be transported, the container can be stably moved to the outside of the transport path. That is, since the rotating roller 34 is stationary, the force acting on the container at the time of contact is constant, so the distance and speed at which the container is moved can be constant, and the container can be stably placed outside the transport path. Can be moved to. Therefore, even if the container is small and light, such as a small-capacity empty space, the container can be stably moved to the outside of the conveyance path without falling down. Further, since the rotating roller 34 is stationary, the container can be stably moved to the outside of the conveyance path even when the container is conveyed at high speed.

  According to the container exclusion device of the present embodiment, it is possible to flexibly cope with changes in the conveyance speed, mass, shape, material, and the like of the container. In other words, a change in the conveyance speed of the container is dealt with by controlling the position (contact position) where the rotating roller 34 is brought into contact with the container by the servo motor 20 and adjusting the contact angle between the rotating roller 34 and the container. be able to. In addition, the moving distance of the container can be adjusted accordingly. The rotating roller 34 is replaceable, and changes in the mass and material of the container can be dealt with by changing the material and shape of the rotating roller 34.

  Furthermore, with respect to changes in the shape of the container, the position adjustment handles 44 and 46 and the inclination angle adjustment handle 52 described above are used to adjust the vertical position, horizontal position, and inclination angle of the rotating roller 34. Can respond. In this way, the degree of contact of the upper and lower rotating rollers 34 with the container (corresponding to the pressing force for pushing out the container) and the position can be adjusted to the optimum state, so that the container can be prevented from overturning when the container is extruded. Can do.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and it goes without saying that the present invention may be implemented in various forms within the scope of the technical idea.

It is a top view which shows the basic composition of the container exclusion apparatus in one Embodiment of this invention. It is a longitudinal cross-sectional view of the container exclusion apparatus shown in FIG. It is an expanded sectional view which shows the lower end part of the rotating shaft in the container exclusion apparatus of FIG. FIG. 4 is a plan view of FIG. 3. FIG. 5A and FIG. 5B are plan views showing a process of discharging the container by rotating the rotating member of the container removing device shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 1a Defective container 2 Conveyor 3 Discharge conveyor 4 Container removal apparatus 5 Container detection sensor 10 Support frame 12 1st frame 14,50 Rod 16 2nd frame 18 Support shaft 20 Servo motor 22 Rotating shaft 24, 26 Bearing 28 Bearing case 30 Rotating member 32 Shaft 34 Rotating roller 36 Coil spring 38, 42 Pin 40 Spring fixing part 44, 46, 52 Handle 48 Rod insertion part

Claims (5)

A container rejection device that excludes a container to be transported from a transport path,
A rotating shaft extending in the height direction of the container to be conveyed;
A rotating member attached to the rotating shaft;
A rotating roller attached to one end of the rotating member;
A rotating mechanism that rotates the rotating member around the rotating shaft to position the rotating roller on the transport path, and moves the container to be transported to the outside of the transport path by contacting the rotating roller;
A container excluding device comprising:   The container excluding apparatus according to claim 1, further comprising an urging unit that urges the rotating roller in a direction opposite to a conveyance direction of the container.   The container excluding apparatus according to claim 1, further comprising a position adjusting mechanism that adjusts a position of the rotating roller.   The container exclusion device according to any one of claims 1 to 3, further comprising an inclination angle adjusting mechanism for adjusting an inclination angle of the rotating roller.   The said conveyance path | route is comprised by the conveyance conveyor which conveys a container to a linear direction, The container exclusion apparatus as described in any one of Claim 1 to 4 characterized by the above-mentioned.

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