Stopping device, drum conveyor and belt conveyor

Abstract

The stop device of the present application stops an object moving on a moving passage, and includes a stop member as a member for stopping the object, and a rising and lowering portion that raises and lowers the stop member using a cam mechanism with respect to the moving passage.

Description

Technical Field

[0001] The present invention relates to a stopping device for stopping an object moving on a moving channel, and a roller conveyor and a belt conveyor equipped with said stopping device. Background Technology

[0002] A roller conveyor is known to have multiple rollers arranged side by side in one direction, which serve as a moving channel (conveyor channel) for moving (transporting) objects (conveyed items). This roller conveyor is used in various industrial fields, depending on the type of object, such as in logistics centers, food production lines, industrial product production lines, mail centers, and distribution centers.

[0003] In this roller conveyor, sometimes it is necessary to stop the object moving on one roller conveyor to another, or to temporarily store multiple objects on the roller conveyor, or to adjust the direction of the object on the roller conveyor, etc. For this purpose, a stopping device (stopping device) is sometimes provided on the roller conveyor, for example, a stop member with a cylinder is disclosed in Patent Document 1.

[0004] The cylinder-equipped stop device disclosed in Patent Document 1 has the advantage of being able to be positioned midway between multiple rollers and actuating when necessary, but it has the disadvantage of requiring an air supply to drive the working cylinder. Furthermore, an airtight air supply channel is also required.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Publication No. 2018-177441 Summary of the Invention

[0008] The present invention was made in view of the above circumstances, and its object is to provide a stopping device that does not require an air supply, as well as a roller conveyor and a belt conveyor equipped with said stopping device.

[0009] The present invention relates to a stopping device for stopping an object moving in a movement channel, and includes: a stopping member for stopping the object; and an exiting / receiving portion for exiting / receiving the stopping member in the movement channel by means of a cam mechanism. The present invention relates to roller conveyors and belt conveyors incorporating this stopping device.

[0010] The objects, features, and advantages of the present invention, as described above and others, will become more apparent from the following detailed description and accompanying drawings. Attached Figure Description

[0011] Figure 1 This is a diagram illustrating the configuration of a roller conveyor for explaining an implementation method.

[0012] Figure 2 This is a diagram illustrating the configuration of the stopping device provided by the roller conveyor.

[0013] Figure 3 This is an exploded perspective view of the stopping device.

[0014] Figure 4 This is a diagram illustrating the grooved cam and cam follower of the stopping device.

[0015] Figure 5 This is a schematic diagram showing the roller conveyor around the mounting location of the stopping device.

[0016] Figure 6 This is a perspective view showing the standby state (submerged state) and the operating state (protruding state) of the stopping device.

[0017] Figure 7 This is a diagram illustrating an example of the use of the roller conveyor equipped with the aforementioned stopping device.

[0018] Figure 8 This is a diagram illustrating a variation of the grooved cam used in the stopping device. Detailed Implementation

[0019] Hereinafter, one or more embodiments of the present invention will be described with reference to the accompanying drawings. However, the scope of the invention is not limited to the disclosed embodiments. Furthermore, configurations marked with the same symbols in the figures represent the same configurations, and their descriptions are appropriately omitted. In this specification, general terms are indicated by reference numerals with suffixes omitted, while specific configurations are indicated by reference numerals with suffixes.

[0020] The stopping device (stopping device) in the embodiment is a stopping device for stopping an object moving on a moving channel. It includes: a stopping member as a component for stopping the object; and a cam mechanism for moving the stopping member in and out of the moving channel. This stopping device can be used in various moving channels corresponding to the type of object. Here, as an example, the stopping device is described in the case of a roller conveyor having multiple rollers arranged side by side in one direction. In this case, the stopping device is configured such that the stopping member moves in and out of at least one of the two adjacent rollers among the multiple rollers, and the outer side of the roller located at the end of the multiple rollers in that one direction. Hereinafter, the stopping device and the roller conveyor having the stopping device will be described in more detail.

[0021] Figure 1 This is a diagram illustrating the configuration of a roller conveyor for explaining an implementation method. Figure 2 This is a diagram illustrating the configuration of the stopping device provided by the roller conveyor. Figure 2 A is a perspective view of the stopping device in its operational state (protruding state). Figure 2 B is the edge of the standby state (ignition state). Figure 2 A side view of a partial section observed along section line II shown in Figure A. Figure 2 The section of B is a plane parallel to the XZ plane. Figure 3 This is an exploded perspective view of the stopping device. Figure 4 This is a diagram illustrating the grooved cam and cam follower of the stopping device. Figure 4 A is a top view of the grooved cam. Figure 4 B is a side view of the cam follower. Figure 5 This is a schematic diagram showing the roller conveyor around the mounting location of the stopping device. Figure 5 A to Figure 5 F indicates that the stop device is in standby mode (submerged state). Figure 5 G indicates the state where the stopping device is in the activated (protruding) state. Assuming that the drive unit of the stopping device (in one example, a motor roller) can be visually identified as the upstream side, Figure 5 A is a three-dimensional view observed from the upstream side. Figure 5 B is the top view. Figure 5 C is a three-dimensional view taken from the downstream side. Figure 5 D is the plan view (front view) viewed from the upstream side. Figure 5 E is the right-side view relative to the direction from the upstream side towards the downstream side. Figure 5 F is a plan view (rear view) viewed from the downstream side. Figure 5 G is the right-side view relative to the direction from the upstream side towards the downstream side. Figure 6 This is a perspective view showing the standby state (submerged state) and the operating state (protruding state) of the stopping device. Figure 6 A indicates that the stopping device is in standby mode (submerged state). Figure 6 B indicates the stop device is in the activated state (protruding state). To clarify the directional relationship, in... Figures 1 to 3 and Figure 6 The diagram illustrates an XYZ orthogonal coordinate system. Furthermore, the X direction represents the path along which the object moves using the roller conveyor. Figure 1 The direction of movement DR shown in A is the horizontal direction, the Z direction is the height direction orthogonal to the X direction (vertical direction), and the Y direction is the direction orthogonal to both the X and Z directions (width direction and depth direction).

[0022] For example, such as Figure 1 and Figure 6 As shown, the roller conveyor CV in the embodiment includes a conveyor body 1, a stopping device 2, and a control device 3.

[0023] The conveyor body 1 is a device that forms a moving channel (conveyor channel) for the movement (transportation) of a specified object (conveyor). It includes multiple rollers 11 arranged in parallel along one direction, with the one direction being the moving direction DR, and the top of the multiple rollers 11 serving as the moving channel to move the object. Figure 1 In the example shown, multiple rollers 11 are arranged side-by-side sequentially along the X direction, which is one of the directions. Additionally, in Figure 1 The image shows a portion of the conveyor body 1 with eight rollers 11-1 to 11-8; the remaining portions are omitted. The rollers 11 are rotatably supported by a pair of first and second frames 12-1 and 12-2, which are perpendicular to one direction in the horizontal plane (in... Figure 1 In the example shown, the members are spaced apart by a specified interval (the first interval) in the Y direction and are plate-like members that are long along said one direction. The first and second frames 12-1 and 12-2 each have a portion extending from the vertical direction (in... Figure 1 In the example shown (Z direction), flanges (extension portions) 121-1, 122-1; 121-2, 122-2 extend outward along the Y direction from each end of the plurality of parallel rollers 11. In the first and second frames 12-1, 12-2, which are plate-like members elongated along the X direction, their flanges 121-1, 122-1; 121-2, 122-2 enhance strength in the two directions orthogonal to the X direction, namely the Y and Z directions. The plurality of rollers 11 includes: a plurality of drive rollers 11a that generate their own driving force and rotate; and a plurality of driven rollers 11b that rotate using driving forces from other sources. The plurality of drive rollers 11a are arranged at a specified interval (second interval) along one direction, and one or more driven rollers 11b are arranged between adjacent drive rollers 11a. Figure 1 In the example shown, multiple drive rollers 11a (11a-3, 11a-6) are arranged every two, and two driven rollers 11b (11b-1, 11b-2; 11b-4, 11b-5; 11b-7, 11b-8) are arranged between adjacent drive rollers 11a.

[0024] The drive roller 11a is, for example, a motor roller with a built-in motor that receives and is driven by an electrical supply. The motor roller used in this roller conveyor CV is a known type of motor roller, disclosed, for example, in Patent Document 1 and International Publication No. 2009 / 139068. This motor roller, for example, has a cylindrical roller tube (roller) with both ends blocked by a pair of first and second side plates. The first and second side plates are rotatably mounted on a pair of first and second shafts fixed to a pair of first and second frames 12-1, 12-2 via bearing members such as bearings. Inside the roller tube, a built-in motor is installed in an internal frame fixed to one of the first and second shafts (e.g., the first shaft) and a reducer is mounted on the output shaft of the built-in motor. The roller tube is mounted and fixed to the output shaft of the reducer. The first shaft, fixed to the built-in frame, is hollow. A cable (wiring) is inserted from the outside into the hollow interior, with one end connected to the control device 3 and the other end connected to the built-in motor. The built-in motor is driven by electricity supplied through the cable, and the driving force generated by the built-in motor is transmitted to the roller tube through the reducer, causing the roller tube to rotate around the first and second shafts as rotation axes.

[0025] In addition, in the above description, the drive roller 11a is a motor roller with a built-in motor. However, the drive roller 11a may also be a type in which the motor is externally mounted and the driving force of the external motor is transmitted to the roller by means of, for example, pulleys and belts, or by means of, gears.

[0026] Driven roller 11b is a known type of driven roller, disclosed for example in Patent Document 1 and International Publication No. 2009 / 139068. This driven roller 11b, for example, has a cylindrical roller tube (roller) with both ends blocked by a pair of first and second side plates. These first and second side plates are rotatably mounted on a pair of first and second shafts fixed to a pair of first and second frames 12-1 and 12-2 via bearing members such as bearings. The driven roller 11b rotates due to friction with an object moved by the drive roller 11a. Alternatively, the drive roller 11a and the driven roller 11b each have pulleys with belts attached at one end. The driving force of the drive roller 11a is transmitted to the driven roller 11b via the pulleys of the drive roller 11a, the belt, and the pulleys of the driven roller 11b, causing the driven roller 11b to rotate.

[0027] The stopping device 2 is a device that stops an object moving in the moving channel. The stopping device 2 can also release the object from stopping after it has come to a stop. In this embodiment, the moving channel is formed by a plurality of rollers 11 of the conveyor body 1. For example, as... Figures 1 to 6As shown, the stopping device 2 includes: a stopping member 21 as a member for stopping the object; and a cam mechanism that allows the stopping member 21 to emerge from and submerge in the moving channel. The cam mechanism includes: a recessed cam 22 with a cam groove 222 forming a concave or through-opening; and a cam follower 23 guided by the cam groove 222 and engaged with the stopping member 21. The cam groove 222 is arc-shaped in a plane formed by a first straight line along the moving direction DR of the moving channel and a second straight line along the emergence direction. Figures 1 to 6 In the example shown, the movement direction DR is the X-direction, the first straight line is a straight line parallel to the X-axis, the emergence direction is the Z-direction, the second straight line is a straight line parallel to the Z-axis, and the plane formed by the first and second straight lines is the XZ plane (a plane parallel to the XZ plane). The emergence part also includes a drive unit that drives the groove cam 22 about an axis with a third straight line as the rotation axis. This third straight line passes through an eccentric point EP that is off-center from the center point CP of the arc shape and along the normal direction of the plane. Figures 1 to 6 In the example shown, the normal direction of the plane is the Y direction, and the third straight line is a straight line parallel to the Y-axis. The drive unit is a motor roller for a roller conveyor, specifically a motor roller with a built-in motor.

[0028] More specifically, the stopping member 21 is a plate-shaped member. Figures 1 to 6In the example shown, the stop member 21 includes: a first face 211 that forms a first surface parallel to the YZ plane and is flat; a step portion 212 that extends from the first face 211 by bending approximately 90 degrees in the X direction and further bending approximately 90 degrees in the Z direction; a second face 213 that extends from the step portion 212 and forms a second surface parallel to the YZ plane and is flat; a pair of first and second track holding portions 214-1 and 214-2 that extend from each end of the second face 213 in the Y direction along the Z direction; and a pair of first and second cam follower holding portions 215-1 and 215-2 that protrude in a flange-like manner from each root of the first and second track holding portions 214-1 and 214-2 in the X direction. Therefore, the stop member 21 has a step at the step portion 212, and a space is formed between the first and second cam follower holding portions 215-1 and 215-2, spaced apart by a specified interval (the third interval) in the Y direction, in which the appearance portion can be arranged. The first track 24-1, which is a plate-shaped member that is long in the Z direction, is fixed to the first track holding portion 214-1 by screws, for example, and the first track holding portion 214-1 holds the first track 24-1. One end of the plate-shaped first track 24-1 in the Y direction is bent at approximately 90 degrees in the X direction, covering the outer end face of the first track holding portion 214-1 in the Y direction. Therefore, the first track 24-1 is approximately L-shaped in a cross section parallel to the XY plane. Similarly, the second track 24-2, which is a plate-shaped member that is long in the Z direction, is fixed to the second track holding portion 214-2 by screws, for example, and the second track holding portion 214-2 holds the second track 24-2. One end of the plate-shaped second track 24-2 in the Y direction is bent at approximately 90 degrees in the X direction, covering the outer end face of the second track retaining part 214-2 in the Y direction. Therefore, the second track 24-2 is approximately L-shaped in cross-section of the XY plane.

[0029] The stopping device 2 includes a pair of first and second track guides 25-1 and 25-2, which are columnar members. Each of the first and second track guides 25-1 and 25-2 has a recessed strip extending inward along the columnar extension direction on one side. The first and second track guides 25-1 and 25-2 are positioned such that the recessed strips face each other, with a fourth interval corresponding to the length in the Y direction from the first track holding portion 214-1 to the second track holding portion 214-2, so that the extension direction of the columnar member is aligned with the Z direction. They are fixed to the base plate 27, for example, with screws and respectively via a pair of first and second guide mounting plates 26-1 and 26-2. The first track 24-1, held by the first track retaining part 214-1 with a roughly 90-degree bend, is positioned so that the bottom surface of the recessed strip faces the first track 24-1. A portion of the outer end of the first track 24-1 in the Y-direction is slidably engaged in the recessed strip of the first track guide 25-1. Similarly, the second track 24-2, held by the second track retaining part 214-2 with a roughly 90-degree bend, is positioned so that the bottom surface of the recessed strip faces the second track 24-2. A portion of the outer end of the second track 24-2 in the Y-direction is slidably engaged in the recessed strip of the second track guide 25-2. When viewed along the Z-direction (appearance / departure direction), the step portion 212 of the stop member 21 overlaps with the end face of one end of the base plate 27 in the Z-direction.

[0030] Groove cam 22 in Figures 1 to 6 In the example shown, a pair of first and second recessed cams 22-1 and 22-2 are provided. Since these first and second recessed cams 22-1 and 22-2 are of the same shape, the recessed cam 22 is primarily referenced to... Figure 4 A is explained as follows. For example... Figure 4 As shown in Figure A, the grooved cam 22 has a plate-shaped component, namely the grooved cam body 221, with a circular cutout. The plate-shaped grooved cam body 221 has a recessed area or a through opening (in...). Figure 4 In the example shown in A, the cam groove 222 is an arc-shaped cam groove (with a through opening). A shaft insertion opening 223 is formed at an eccentric point EP, a distance eccentrically offset from the center point CP of the arc shape, for inserting the shaft of a motor roller 29, which is an example of the drive unit. The center point CP of the arc shape coincides with the center point of the groove cam body 221 when it is circular without a cut. The circumferential length of the cam groove 222 (the size of the central angle of the arc shape), the radius of the cam groove 222, and the position of the eccentric point EP are appropriately set according to the emergence length relative to the first face 211 of the stop member 21 of the moving channel.

[0031] The base plate 27 is a plate-shaped component. In one example, the base plate 27 is rectangular. As described above, when the first and second tracks 24-1 and 24-2, which are respectively held by the pair of first and second track holding portions 214-1 and 214-2 of the stopping member 21, are each slidably embedded in the respective recesses of the pair of first and second track guides 25-1 and 25-2 mounted on the base plate 27, in order for the first recessed cam 22-1 to pass through the space between the first and second track holding portions 214-1 and 214-2 and the first track holding portion On the inner side of 214-1 in the Y direction, a first recessed cam passage opening 271-1 with a rectangular through opening extending in the Z direction is formed on the base plate 27. To allow the second recessed cam 22-2 to pass through the space between the first and second track holding portions 214-1 and 214-2, and on the inner side of the second track holding portion 214-2 in the Y direction, a second recessed cam passage opening 271-2 with a rectangular through opening extending in the Z direction is formed on the base plate 27. Between the first recessed cam passage opening 271-1 and the first track guide 25-1, to prevent the stop member 21 from interfering with the first track holding portion 214-1 and the first track 24-1 during its movement, one end of a plate-shaped first shaft support member 28-1, which is approximately L-shaped in cross-section in the XY plane, is fixed to the base plate 27, for example, with screws. At the other end of the generally L-shaped first shaft support member 28-1, a through-opening for supporting the shaft of the motor roller 29, which is an example of the drive unit, is formed. Similarly, between the second recessed cam and the second track guide 25-2, to prevent the stop member 21 from interfering with the second track holding part 214-2 and the second track 24-2 during its movement, one end of the generally L-shaped plate-like second shaft support member 28-2, which has a generally L-shaped cross-section in the XY plane, is fixed to the base plate 27, for example, with screws. At the other end of the generally L-shaped second shaft support member 28-2, a through-opening for supporting the shaft of the motor roller 29, which is an example of the drive unit, is formed.

[0032] The motor roller 29 is an example of the drive unit, and in this embodiment, it is a motor roller for a roller conveyor used in a roller conveyor CV. This motor roller 29, for example, is similar to the drive roller 11a, having a cylindrical roller tube (roller) with both ends rotatably mounted to a pair of first and second side plates of a pair of first and second shafts via bearing members such as bearings. Inside the roller tube is a built-in motor mounted in an internal frame fixed to one of the first and second shafts (e.g., the first shaft) and a speed reducer mounted on the output shaft of the built-in motor. The roller tube is mounted and fixed to the output shaft of the speed reducer. The first shaft fixed to the internal frame is hollow, and a cable (wiring) with one end connected to the control device 3 is inserted from the outside into the hollow interior. The other end of the cable is connected to the built-in motor. The built-in motor is driven by electricity supplied through the cable, and the driving force generated by the built-in motor is transmitted to the roller tube through the speed reducer, causing the roller tube to rotate about the first and second shafts as its axis of rotation. The length of the motor roller 29 used in the stopping device 2 is shorter than that of the roller 11 used in the conveyor body 1. The motor roller 29 is fixed to the first shaft support member 28-1 by inserting its first shaft body through the first shaft insertion opening 223-1 of the first groove cam 22-1, and the first shaft body is fixed to the second shaft support member 28-2 by the second shaft insertion opening 281-2 of the second groove cam 22-2 by inserting its second shaft body through the second shaft insertion opening 223-2 of the second groove cam 22-2. Thus, the first groove cam 22-1, the motor roller 29, and the second groove cam 22-2 are mounted on the base plate 27 such that each of the first and second groove cams 22-1 and 22-2 can be respectively mounted through the openings 271-1 and 271-2. Furthermore, one end of the roller tube of the motor roller 29 is fixedly mounted to the first groove cam 22-1 with a screw, and the other end is fixedly mounted to the second groove cam 22-2 with a screw. Thus, the first groove cam 22-1 is mounted to one end of the roller tube of the motor roller 29 such that the first groove cam body 221-1 is parallel to the XZ plane. The first cam groove 222-1 is located in the moving direction DR (in the moving channel) of the moving channel. Figures 1 to 6 The first straight line (in the example shown, the X direction) and along the stated emergence direction (in Figures 1 to 6 In the example shown, the second line (in the Z direction) forms the plane (within) Figures 1 to 6In the example shown, the groove is arc-shaped (within the XZ plane). Similarly, the second groove cam 22-2 is mounted on the other end of the roller tube of the motor roller 29 such that the second groove cam body 221-2 is parallel to the XZ plane. The second cam groove 222-2 is located in the moving direction DR (in the moving channel) along the moving channel. Figures 1 to 6 The first straight line (in the example shown, the X direction) and along the stated emergence direction (in Figures 1 to 6 In the example shown, the second line (in the Z direction) forms the plane (within) Figures 1 to 6 In the example shown, the shape is an arc (within the XZ plane).

[0033] Cam follower 23 in Figures 1 to 6 In the example shown, a pair of first and second cam followers 23-1 and 23-2 are provided. Since these first and second cam followers 23-1 and 23-2 are of the same shape, the cam follower 23 is primarily referenced to... Figure 4 B is explained below. Cam follower 23, as shown... Figure 4 Figure B shows a cylindrical shaft portion 232 and a cylindrical follower body 231. The follower body 231 is rotatably mounted relative to one end of the shaft portion 232, for example, via a needle roller bearing. Therefore, the diameter of the shaft portion 232 is shorter than the diameter of the follower body 231. The diameter of the follower body 231 is slightly shorter than the radial length (width) of the cam groove 222 so that it can be movably inserted into the cam groove 222.

[0034] The first cam follower 23-1 is guided by the first cam groove 222-1 of the first recessed cam 22-1 and engages with the stop member 21. The second cam follower 23-2 is guided by the second cam groove 222-2 of the second recessed cam 22-2 and engages with the stop member 21. Figures 1 to 6 In the example shown, the first follower body 231-1 of the first cam follower 23-1 is movably embedded in the first cam groove 222-1 of the first recessed cam 22-1, and the other end of the first shaft portion 232-1 of the first cam follower 23-1 is fixedly mounted to the first cam follower retaining portion 215-1 of the stop member 21, for example, with a screw. Similarly, the second follower body 231-2 of the second cam follower 23-2 is movably embedded in the second cam groove 222-2 of the second recessed cam 22-2, and the other end of the second shaft portion 232-2 of the second cam follower 23-2 is fixedly mounted to the second cam follower retaining portion 215-2 of the stop member 21, for example, with a screw.

[0035] These first and second tracks 24-1, 24-2, first and second track guides 25-1, 25-2, first and second guide mounting plates 26-1, 26-2, first and second shaft support members 28-1, 28-2, motor roller 29, first and second recessed cams 22-1, 22-2, and first and second cam followers 23-1, 23-2 constitute an example of the aforementioned emerging part, corresponding to an example of the aforementioned emerging part. The first and second tracks 24-1, 24-2, first and second track guides 25-1, first and second recessed cams 22-1, 22-2, and first and second cam followers 23-1, 23-2 constitute an example of the aforementioned cam mechanism, corresponding to an example of the aforementioned cam mechanism. The first and second recessed cams 22-1 and 22-2 are examples of what is called a driver; the first and second tracks 24-1 and 24-2 and the first and second cam followers 23-1 and 23-2 are examples of what is called a follower; and the first and second track guides 25-1 and 25-2 are examples of what is called a fixing node. Alternatively, the first and second track holding portions 214-1 and 214-2 that hold the first and second tracks 24-1 and 24-2 may also be included in the aforementioned recessed portion. In this case, the first and second track holding portions 214-1 and 214-2 are included in the followers.

[0036] Furthermore, in this embodiment, the stopping device 2 is used to detect the movement state of the groove cam 22. Figures 1 to 6In the example shown, to detect the movement state of the first recessed cam 22-1, it also includes first and second sensors 30-1 and 30-2, a sensor holding part 31, and first and second sensor ports 32-1 and 32-2. The first and second sensors 30-1 and 30-2 are sensors used to detect the rotational position of the first recessed cam 22-1 as the movement state of the first recessed cam 22-1, and are, for example, inductive proximity sensors. The sensor holding part 31 is a plate-shaped member that is approximately L-shaped on a cross-section parallel to the XZ plane (the cross-section of the XZ plane), and holds the first and second sensors 30-1 and 30-2. More specifically, the sensor holding part 31 holds the first and second sensors 30-1 and 30-2 by sequentially arranging them side-by-side in the X direction at one end of the generally L-shaped structure. The other end of the generally L-shaped structure is fixed to the base plate 27, for example, with screws, below the motor roller 29, with the first and second sensors 30-1 and 30-2 facing the first recessed cam 22-1. The first sensor port 32-1 is a component for actuating the first sensor 30-1, and the second sensor port 32-2 is a component for actuating the second sensor 30-2. When the first and second sensors 30-1 and 30-2 are inductive proximity sensors, the first and second sensor ports 32-1 and 32-2 are respectively low-height cylindrical members made of metal (including alloys) to be closer to the first and second sensors 30-1 and 30-2 relative to the first groove cam body 221-1 of the first groove cam 22-1, and to generate and allow the flow of induced current. The first sensor port 32-1 is located at the stop member 21. Figure 6 In the submerged state (standby state) shown in Figure A, at the position opposite to the first sensor 30-1 (first position), as follows: Figure 2 As shown in Figure B, for example, the first groove cam body 221-1 is fixedly mounted to the first groove cam 22-1 with screws. The second sensor port 32-2 is located at the stop member 21. Figure 6 In the convex state (action state) shown in B, at the position opposite to the second sensor 30-2 (second position), as Figure 2 As shown in B, for example, the first groove cam body 221-1 is fixedly mounted to the first groove cam 22-1 with screws.

[0037] The stop device 2 constitutes a stop so that in Figure 6 In the standby state (submerged state) shown in Figure A, the stop component 21 exits from the movement channel and... Figure 6In the operating state (protruding state) shown in B, the stopping member 21 is configured relative to the moving channel in such a way that it protrudes into the moving channel. In this embodiment, the moving channel is formed by a plurality of rollers 11 of the conveyor body 1. Therefore, at least one of the following is true: between two adjacent rollers 11 and on the outside of the roller 11 located at one end of the plurality of rollers 11 in the aforementioned direction. Figures 1 to 6 In the example shown, the stopping device 2 is located between two adjacent rollers 11-1 and 11-2. Figure 5 As shown in Figure E, in the standby state, the stop component 21 exits from the movement channel formed by the plurality of rollers 11, and as... Figure 5 As shown in G, in the operating state, the stop member 21 protrudes into the moving channel and is thus configured to be mounted on the conveyor body 1 by means of a pair of first and second stop device retaining parts 13-1, 13-2. More specifically, the first and second stop device retaining parts 13-1, 13-2 are plate-shaped members with approximately right-angled triangular shapes, each end of which is bent at approximately 90 degrees, clamping the two sides of the right angle. Therefore, the first and second stop device retaining parts 13-1, 13-2 are approximately L-shaped in the XZ plane and approximately L-shaped in the XY plane, respectively. One end of the approximately L-shaped first stop device retaining part 13-1 in the XZ plane is fixed to the flange 122-1 of the first frame 12-1, for example, with a screw, and one end of the approximately L-shaped second stop device retaining part 13-2 in the XZ plane is fixed to the flange 122-2 of the second frame 12-2, for example, with a screw. Furthermore, as described above, in order to make the stop member 21 appear in the moving channel, the generally L-shaped end of the first stop device retaining part 13-1 on the cross section of the XY plane is fixedly mounted to the base plate 27 by screws, for example, and the generally L-shaped end of the second stop device retaining part 13-2 on the cross section of the XY plane is fixedly mounted to the base plate 27 by screws, for example.

[0038] The control device 3 is a device that is connected to each drive roller 11a of the conveyor body 1 and controls each drive roller 11a. The control device 3 controls the drive roller 11a to rotate forward at a specified speed or reverse at a specified speed based on control signals from a host system (not shown) of the roller conveyor CV or inputs from the operation panel (not shown) of the control device 3. Forward rotation refers to the rotation direction of the drive roller 11a that moves the object along the moving direction DR. This control device 3 is a known control device, disclosed, for example, in Patent Document 1 and International Publication No. 2013 / 057767. Furthermore, in this embodiment, the stop device 2 uses a motor roller 29, which is an example of the drive unit. Therefore, the control device 3 is connected to the motor roller 29 of the stop device 2 and the first and second sensors 30-1 and 30-2, respectively, and controls the motor roller 29 based on the detection signals from the first and second sensors 30-1 and 30-2.

[0039] In the stop device 2 configured in this way, for example in the standby state (submerged state), if an instruction to move to the action state (protruding state) is received from the host system or the operation panel, the control device 3 controls the motor roller 29 of the stop device 2 to rotate forward until a detection signal is received from the second sensor 30-2. Through this control, the motor roller 29 rotates forward. That is, the built-in motor of the motor roller 29 drives the roller tube of the motor roller 29 to rotate forward via the reducer of the motor roller 29, using the first and second shafts of the motor roller 29, which are respectively fixed to the first and second shaft support members 28-1 and 28-2, as rotation axes. If the roller tube of the motor roller 29 rotates forward, the first and second groove cams 22-1 and 22-2 fixed to the roller tube of the motor roller 29 are driven. That is, the first and second recessed cams 22-1 and 22-2 rotate about an axis passing through the eccentric points EP-1 and EP-2, which are eccentric to the center points CP-1 and CP2 of the arc shapes of the first and second cam grooves 222-1 and 222-2, and along a third straight line in the normal direction (Y direction) of the XZ plane. If the first and second recessed cams 22-1 and 22-2 rotate, the first and second cam followers 23-1 and 23-2 are each guided to move by the first and second cam grooves 222-1 and 222-2, respectively. That is, the first and second follower bodies 231-1 and 231-2 of the first and second cam followers 23-1 and 23-2, respectively embedded in the first and second cam grooves 222-1 and 222-2, move from one end to the other in the circumferential direction along the first and second cam grooves 222-1 and 222-2, respectively. Therefore, the first and second shaft portions 232-1 and 232-2 of the first and second cam followers 23-1 and 23-2 also move. Each movement is transmitted to the stop member 21 through the first and second cam follower holding portions 215-1 and 215-2 of the first and second cam followers 23-1 and 23-2, respectively, which are fixedly installed on the first and second shaft portions 232-1 and 232-2 of the first and second cam followers 23-1 and 23-2. The stop member 21 also moves along with the movement of the first and second cam followers 23-1 and 23-2. Here, the movement of the stop member 21 is restricted (guided) to Z-direction movement by the first and second track guides 25-1 and 25-2, for example, as shown in the figure. Figure 6 The stop member 21's first face 211 protrudes from the movement channel after moving a predetermined length ST along the Z direction. Furthermore, if the second sensor 30-2 detects the second sensor port 32-2, the second sensor 30-2 sends a detection signal to the control device 3. Based on the receipt of this detection signal, the control device 3, as described above, stops the forward rotation of the motor roller 29.

[0040] In addition, as described above, the control device 3 can also confirm the detection of the first sensor port 32-1 by the first sensor 30-1 before the motor drum 29 starts to rotate forward, thereby confirming that the stop device 2 is in standby mode.

[0041] Furthermore, in the aforementioned stopping device 2, the predetermined length ST, which serves as the movement amount of the stopping member 21, can be adjusted by adjusting the position of the second sensor port 32-2. The predetermined length ST can also be adjusted by adjusting the forward rotation drive time.

[0042] On the other hand, for example, in the active state (protruding state), if an instruction to switch to the standby state (submerged state) is received from the upper system or the operation panel, the control device 3 controls the motor roller 29 of the stop device 2 to reverse until a detection signal is received from the second sensor 30-2. Through this control, the motor roller 29 reverses. That is, the built-in motor of the motor roller 29 is driven, and through the reducer of the motor roller 29, the roller tube of the motor roller 29 reverses with the first and second shafts of the motor roller 29, respectively fixed to the first and second shaft support members 28-1 and 28-2, as the rotation axis. If the roller tube of the motor roller 29 reverses, the first and second groove cams 22-1 and 22-2 fixed to the roller tube of the motor roller 29 are driven. That is, the first and second recessed cams 22-1 and 22-2 rotate about an axis passing through the eccentric points EP-1 and EP-2, which are eccentric to the center points CP-1 and CP2 of the arc shapes of the first and second cam grooves 222-1 and 222-2, and along a third straight line in the normal direction (Y direction) of the XZ plane. If the first and second recessed cams 22-1 and 22-2 rotate, the first and second cam followers 23-1 and 23-2 are each guided to move by the first and second cam grooves 222-1 and 222-2, respectively. That is, the first and second follower bodies 231-1 and 231-2 of the first and second cam followers 23-1 and 23-2, respectively embedded in the first and second cam grooves 222-1 and 222-2, respectively, move from their respective other ends in the circumferential direction to their respective ends along the first and second cam grooves 222-1 and 222-2. Therefore, the first and second shaft portions 232-1 and 232-2 of the first and second cam followers 23-1 and 23-2 also move. Each movement is transmitted to the stop member 21 through the first and second cam follower holding portions 215-1 and 215-2 of the first and second shaft portions 232-1 and 232-2, respectively, which are fixedly installed on the first and second cam followers 23-1 and 23-2. The stop member 21 also moves along with the movement of the first and second cam followers 23-1 and 23-2. Here, the movement of the stop member 21 is restricted (guided) to Z-direction movement by the first and second track guides 25-1 and 25-2. The stop member 21 moves along the Z-direction, and the first face 211 of the stop member 21 exits from the movement channel. Furthermore, if the first sensor 30-1 detects the first sensor port 32-1, the first sensor 30-1 sends a detection signal to the control device 3. Based on the receipt of this detection signal, the control device 3, as described above, stops the reverse rotation of the motor roller 29.

[0043] In addition, as described above, the control device 3 can also confirm the detection of the second sensor port 32-2 by using the second sensor 30-2 before the motor roller 29 reverses, thereby confirming that the stop device 2 is in operation.

[0044] As explained above, the roller conveyor CV of the embodiment and its stop device 2 use a cam mechanism to make the stop member 21 appear in and out of the moving channel, so there is no need to supply air.

[0045] While a fixed type of stop device, such as a stop plate, is cheaper, it requires time-consuming labor to install the stop plate at the stopping position of the object or to remove the stop plate when the stopped object needs to be restarted. The roller conveyor CV and the stop device 2 described above utilize a cam mechanism to move the stop member 21 in and out of the movement path, thus eliminating this time-consuming labor.

[0046] The roller conveyor CV and the stopping device 2 described above use a recessed cam, which is a planar cam with a cam groove formed in a plane. Therefore, the cam mechanism can be implemented with a simple structure. For example, when a force is applied to the stopping member 21 in a direction intersecting the exit direction (e.g., the horizontal direction of the movement direction DR) due to different objects, the use of the recessed cam allows the stopping member 21 to retract.

[0047] The aforementioned roller conveyor CV and the aforementioned stop device 2 convert the motor roller of the roller conveyor into the drive unit. Therefore, the control device (controller) of the roller conveyor that controls the motor roller can be converted into the control device of the stop device 2.

[0048] The roller conveyor CV and the stop device 2 described above cause the stop member 21 to move out and inward by driving the motor roller 29. Therefore, compared with the case where the stop member 21 is reliably withdrawn by its own weight, the stop member 21 can be reliably withdrawn. In particular, for example, when a force is applied to the stop member 21 in a direction intersecting the moving direction (e.g., the horizontal direction of the moving direction DR) due to different objects, the roller conveyor CV and the stop device 2 described above can also withdraw the stop member 21.

[0049] Because the stop member 21 has a stepped portion 212 that overlaps with the end face of one end of the base plate 27 in the Z direction (appearance / departure direction) when viewed from the Z direction, even if the first sensor 30-1 used to detect the standby state malfunctions, in the above-described roller conveyor CV and the above-described stop device 2, the stepped portion 212 of the stop member 21 abuts against the end face of the base plate 27, thus stopping the movement of the stop member 21. Therefore, the above-described roller conveyor CV and the above-described stop device 2 have a fail-safe function. If the stepped portion 212 abuts against the end face of the base plate 27, the motor roller 29 is subjected to a load. Therefore, by monitoring the current supplied to the built-in motor of the motor roller 29 by the control device 3, the control device 3 can detect the abutment and also stop the reverse drive of the motor roller 29.

[0050] According to this embodiment, a roller conveyor CV equipped with the aforementioned stopping device 2 can be provided. When the roller conveyor CV is equipped with a stopping device disposed midway along the plurality of rollers 11, by protruding the stopping member 21 into the movement channel, the object can be stopped at the necessary time midway along the plurality of rollers 11, and by retracting the stopping member 21 from the movement channel, the object can be moved again at the necessary time. When the roller conveyor CV is equipped with a stopping device 2 disposed on the outer side of the ends of the plurality of rollers 11, by protruding the stopping member 21 into the movement channel, the object can be stopped at the ends of the plurality of rollers 11 at the necessary time, and by retracting the stopping member 21 from the movement channel, the object can be moved again at the necessary time.

[0051] In the case where the stopping device is an electric type utilizing an electric cylinder, a control device for controlling the electric cylinder is required. The control device 3 for controlling the motor roller 11a of the roller conveyor CV described above can also control the drive unit of the stopping device 2 (in one example, the motor roller 29), therefore, there is no need to prepare a separate control device for controlling the drive unit of the stopping device 2.

[0052] Next, an example of the application of a roller conveyor CV equipped with a stop device 2 will be described. Figure 7 This is a diagram illustrating an example of the use of the roller conveyor equipped with the aforementioned stopping device. Figure 7 A is a diagram showing the movement of the object (object 1 Ob-1) moved by the roller conveyor CV. Figure 7 B is a diagram showing the storage of three objects, OB-1 to OB-3, in the moving channel of the roller conveyor CV. Figure 7 C represents Figure 7Figure B shows the situation where the first object, Ob-1, which is at the forefront (the most downstream) of the three stored objects Ob-1 to Ob-3, starts moving again.

[0053] exist Figure 7 In the example shown, the stopping device 2 is configured such that the stopping member 21 appears between two adjacent rollers 11 of the plurality of rollers 11.

[0054] When using a roller conveyor CV to move (transport) object Ob, the stopping device 2 is as follows: Figure 7 As shown in Figure A, the object is in a standby state (submerged state), and the stop component 21 exits from the movement channel (conveyor channel). Thus, the object Ob, which is moved by the multiple rollers 11, continues its movement.

[0055] In the case of using a roller conveyor CV to store data during the movement of multiple objects (Ob), the stopping device 2 is as follows: Figure 7 As shown in Figure B, the stop member 21 protrudes from the movement channel when the object Ob-1, which is moved by the multiple rollers 11, reaches the position of the stop member 21 of the stopping device 2. Here, if the object Ob-1 is tilted relative to the movement direction DR (X direction), the tilt of the object Ob-1 relative to the movement direction DR is corrected by the object Ob-1 abutting against the flat first surface 211, since the first surface 211 of the stop member 21 is flat. If the object Ob-2, which is moved by the multiple rollers 11, reaches the position of the stopped object Ob-1, it abuts against the object Ob-1 and is stopped by the object Ob-1. Thus, the first and second objects Ob-1 and Ob-2 are stored in the movement channel. If the third object Ob-3, which is moved by the multiple rollers 11, moves to the position of the stationary second object Ob-2, it comes into contact with the second object Ob-2 and is stopped by the second object Ob-2. Thus, the first to third objects Ob-1 to Ob-3 are stored in the movement channel. Furthermore, during the storage of the first to third objects Ob-1 to Ob-3, the drive roller 11a that carries the first to third objects Ob-1 to Ob-3 can also be stopped.

[0056] In the case where a roller conveyor CV is used to reposition multiple stored objects (Ob), the stopping device 2 is as follows: Figure 7As shown in Figure C, the stop device 21 retracts from the movement channel when it transitions from the operating state to the standby state. If the stop device 21 retracts from the movement channel, the first object Ob-1, which was stopped by the stop device 21 (the downstreammost object), resumes its movement using the multiple rollers 11. Alternatively, after the first object Ob-1 has moved, the stop device 2 can transition from the standby state to the operating state, thereby storing the second and third objects Ob-2 and Ob-3. Then, at a predetermined time, the stop device 2 transitions from the operating state to the standby state, and the movement of the second object Ob-2 resumes. This allows adjustment of the gap (5th gap) between the first object Ob-1 and the second object Ob-2. Similarly, the gap (6th gap) between the second object Ob-2 and the third object Ob-3 can also be adjusted.

[0057] In addition, in the above description, one stop device 2 is provided for the roller conveyor CV, but multiple stop devices 2 may also be provided.

[0058] Furthermore, the aforementioned stopping device 2 has a cam groove 222 that forms an arc shape and is driven around an axis by a third straight line passing through the eccentric point EP. However, the shape of the groove cam 22 is not limited to this, as long as it is a shape that allows the stopping member 21 to move in and out of the moving channel by means of a cam mechanism.

[0059] Figure 8 This is a diagram illustrating a modified embodiment of the grooved cam used in the stopping device. Figure 8 B is the top view of the grooved cam. Figure 8 A is along Figure 8 The sectional view observed along section line II-II shown in Figure B. Figure 8 C is a side view of a grooved cam. For example, the cam mechanism has a feature that replaces... Figure 4 The grooved cam 22 shown in Figure A, Figure 8 The cam 22a shown has a recessed cam groove with a concave or through-opening shape; and a cam guided by the cam groove and engaged with the stop member 21. Figure 4The cam follower 23 is shown in Figure B. The cam groove 222a has a generally U-shaped form with rounded corners in the plane formed by a first straight line along the movement direction DR of the moving channel and a second straight line along the exit direction. Similarly, the movement direction DR is the X direction, the first straight line is a line parallel to the X-axis, the exit direction is the Z direction, the second straight line is a line parallel to the Z-axis, and the plane formed by the first and second straight lines is the XZ plane (a plane parallel to the XZ plane). The exit portion also includes a drive unit that drives the groove cam 22a about a third straight line as a rotation axis. This third straight line passes through an eccentric point EPa, offset to one side from the center position on the inner side of the generally U-shaped part, and is along the normal direction of the plane. Similarly, the normal direction of the plane is the Y direction, and the third straight line is a line parallel to the Y-axis. The drive unit is a motor roller for a roller conveyor, specifically a motor roller with a built-in motor.

[0060] More specifically, the recessed cam 22a, like the one described above, has a pair of first and second recessed cams 22a-1 and 22a-2. Since these first and second recessed cams 22a-1 and 22a-2 are of the same shape, the recessed cam 22a will be described as follows. Figure 8 As shown in Figure B, the recessed cam 22a has a plate-shaped component that is roughly D-shaped when viewed from above, namely the recessed cam body 221a. The plate-shaped recessed cam body 221a has a recessed area or a through opening (in...). Figure 8 In the example shown in B, the cam groove 222a is a roughly U-shaped cam groove with two rounded corners when viewed from above (through opening). Figure 8 In the example shown, in cam groove 222a, one end of the generally U-shaped section is inclined outward and slightly extended. The inner side of the generally U-shaped section is offset to one side from the center position in the Z direction (in...). Figure 8 In the example shown in B, the position of the eccentric point EPa (leaning downwards in the Z direction) forms a shaft insertion opening 223a for inserting a through opening into the shaft of the motor roller 29, which is an example of the drive unit. The approximate U-shaped size of the cam groove 222a (the length of the cam groove 222a in the extension direction) and the position of the eccentric point EPa are appropriately set according to the emergence length of the first face 211 of the stop member 21 of the moving channel. Furthermore, in the above-described recessed cam 22, the center point CP of the arc shape coincides with the center point of the recessed cam body 221 when it is circular without a cut, however, in Figure 8 In the grooved cam 22a shown, the center point of the cam groove 221a may not be the same as the center point of the grooved cam body 221a.

[0061] Furthermore, in the above description, the stopping device 2 is provided in the roller conveyor CV. However, the stopping device 2 can also be provided in a belt conveyor having one or more auxiliary conveyors, which have multiple rollers arranged side by side in one direction and a conveyor belt sleeved on the multiple rollers. This belt conveyor is a known type, disclosed, for example, in Japanese Patent Publication No. 2018-158826. In this case, the stopping device 2 is configured such that the stopping member appears between two adjacent auxiliary conveyors and on the outside of one auxiliary conveyor or at one end of the multiple auxiliary conveyors in that one direction. When the belt conveyor is equipped with the stopping device 2 located midway between the multiple auxiliary conveyors, by protruding the stopping member 21 into the movement channel, the object can be stopped at a necessary time midway, and by retracting the stopping member 21 from the movement channel, the object can be moved again at a necessary time. When the aforementioned belt conveyor is equipped with a stop device 2 disposed on the outside of the ends of multiple auxiliary conveyors, by protruding the stop member 21 into the moving channel, the object can be stopped at the end when necessary, and by withdrawing the stop member 21 from the moving channel, the object can be moved again when necessary.

[0062] This specification discloses various implementation techniques as described above, and the main techniques therein are summarized below.

[0063] One technical solution relates to a stopping device that stops an object moving on a movement channel, and includes: a stopping member for stopping the object; and an exiting part that uses a cam mechanism to make the stopping member exit the movement channel.

[0064] The stopping device uses a cam mechanism to move the stopping component out of the movement channel, thus eliminating the need for an air supply.

[0065] In another technical solution, in the above-mentioned stopping device, the cam mechanism includes: a recessed cam with a cam groove that is concave or has a through opening; and a cam follower that is guided by the cam groove and engaged with the stopping member, wherein the cam groove is arc-shaped in a plane formed by a first straight line along the moving direction of the moving channel and a second straight line along the emerging direction, and the emerging part further includes: a driving part that drives the recessed cam about a third straight line as a rotation axis, the third straight line passing through an eccentric point eccentric from the center point of the arc shape and along the normal direction of the plane. In another technical solution, in the above-mentioned stopping device, the cam mechanism includes: a recessed cam with a cam groove that is concave or has a through opening; and a cam follower guided by the cam groove and engaged with the stopping member, wherein the cam groove is in the shape of a U-shape with rounded corners in a plane formed by a first straight line along the moving direction of the moving channel and a second straight line along the emerging direction, and the emerging part further includes: a driving part that drives the recessed cam about a third straight line as a rotation axis, the third straight line passing through an eccentric point on the inner side of the U-shape that is biased to one side relative to the central position and along the normal direction of the plane.

[0066] These stopping devices utilize recessed cams, which are planar cams with cam grooves formed in a plane, thus enabling the implementation of a cam mechanism with a simple structure. Even when a force is applied to the stopping member in a direction intersecting the movement direction (e.g., the horizontal direction) due to factors such as the object, the use of the recessed cam allows the stopping member to retract.

[0067] In another technical solution, in these aforementioned stopping devices, the drive unit is a motor roller used in roller conveyors, and is a motor roller with a built-in motor.

[0068] This stopping device converts the motor roller of a roller conveyor into a drive unit. Therefore, the control device (controller) for the roller conveyor that controls the motor roller can be used as the control device for this stopping device. When this stopping device is used on a roller conveyor, the control device that controls the motor roller of the roller conveyor can also control the drive unit (one example of a motor roller) that functions as the stopping device. Therefore, it is not necessary to prepare a separate control device for controlling the drive unit of the stopping device.

[0069] Another technical solution relates to a roller conveyor comprising a plurality of rollers arranged side by side in one direction, and further comprising: any of the aforementioned stopping devices, configured such that the stopping member appears in a manner such that it appears between adjacent rollers of the plurality of rollers and on the outer side of the roller located at the end of the plurality of rollers in the one direction.

[0070] One technical solution relates to a belt conveyor comprising: one or more auxiliary conveyors, each auxiliary conveyor comprising a plurality of rollers arranged side by side in one direction and a conveyor belt sleeved on the plurality of rollers, and the belt conveyor further comprising: a stopping device according to any one of claims 1 to 3, wherein the stopping member is configured to appear in at least one of the following: between two adjacent auxiliary conveyors among the plurality of auxiliary conveyors, and outside the one direction of the one auxiliary conveyor or the auxiliary conveyor located at one end of the plurality of auxiliary conveyors.

[0071] Based on these, roller conveyors and belt conveyors equipped with the aforementioned stopping devices can be provided. When the roller conveyor and belt conveyor have a stopping device located midway, by protruding a stopping member into the moving channel, the object can be stopped at a necessary time midway, and by retracting the stopping member from the moving channel, the object can be moved again at a necessary time. When the roller conveyor and belt conveyor have a stopping device located on the outer side of an end, by protruding a stopping member into the moving channel, the object can be stopped at that end at a necessary time, and by retracting the stopping member from the moving channel, the object can be moved again at a necessary time.

[0072] To illustrate the invention, it has been adequately and sufficiently described above with reference to the accompanying drawings and embodiments. However, it should be recognized that modifications and / or improvements to the above embodiments can be readily made by those skilled in the art. Therefore, any modifications or improvements made by those skilled in the art that do not depart from the scope of the claims set forth in the claims are to be interpreted as being included within the scope of the claims.

[0073] Industrial availability

[0074] According to the present invention, a stopping device, a roller conveyor, and a belt conveyor can be provided.

Claims

1. A stopping device, characterized in that, To stop an object moving on the movement channel, and includes: A stopping component is a component used to stop the object; and The exiting part utilizes a cam mechanism to cause the stopping member to exit and re-enter the moving channel, wherein... The cam mechanism includes: A recessed cam, having a cam groove that is either concave or has a through opening; and The cam follower is guided by the cam groove and engages with the stop member, wherein, The cam groove is arc-shaped in the plane formed by the first straight line along the moving direction of the moving channel and the second straight line along the emerging direction. The aforementioned locations also include: The drive unit drives the grooved cam about an axis with a third straight line as the rotation axis, the third straight line passing through an eccentric point off-center from the center point of the arc shape and along the normal direction of the plane.

2. A stopping device, characterized in that, To stop an object moving on the movement channel, and includes: A stopping component is a component used to stop the object; and The exiting part utilizes a cam mechanism to cause the stopping member to exit and re-enter the moving channel, wherein... The cam mechanism includes: A recessed cam, having a cam groove that is either concave or has a through opening; and The cam follower is guided by the cam groove and engages with the stop member, wherein, The cam groove has a rounded U-shaped shape in the plane formed by the first straight line along the moving direction of the moving channel and the second straight line along the emerging direction. The aforementioned locations also include: The drive unit drives the grooved cam about an axis with a third straight line as the rotation axis. The third straight line passes through an eccentric point on the inner side of the U-shape that is offset to one side relative to the central position and is along the normal direction of the plane.

3. The stopping device according to claim 1 or 2, characterized in that, The drive unit is a motor roller used in roller conveyors, and it is a motor roller with a built-in motor.

4. A roller conveyor, characterized in that... It includes multiple rollers arranged side by side in one direction, and also includes: The stopping device according to any one of claims 1 to 3 is configured such that the stopping member appears in at least one of the rollers adjacent to each other among the plurality of rollers, and on the outside of the roller located at one end of the plurality of rollers in the one direction.

5. A belt conveyor, characterized in that... include: One or more auxiliary conveyors, each auxiliary conveyor comprising a plurality of rollers arranged side by side in one direction and a conveyor belt sleeved on the plurality of rollers, and The belt conveyor also includes: The stopping device according to any one of claims 1 to 3 is configured such that the stopping member appears between two adjacent auxiliary conveyors among the plurality of auxiliary conveyors, and outside the outer side of the one direction of the one auxiliary conveyor or the auxiliary conveyor located at the end of the plurality of auxiliary conveyors.

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