JP6057234B2 - Device for preventing mistakes in picking or sorting goods - Google Patents

Description

  The present invention relates to an apparatus for preventing an erroneous operation of an article picking operation for collecting a necessary number of desired articles according to a customer order or the like, or an article sorting operation for sorting the collected articles for each delivery destination.

The recent distribution of various goods, instead of delivering directly from the manufacturer etc. to the dealers, consumers, etc., after collecting goods ordered by the customer from a large quantity of goods at the distribution center by picking work, Sorted by delivery destination.
In the distribution center, work with functions to prevent erroneous work in order to perform accurate picking work that does not include errors such as delivery destination and number of deliveries, and goods sorting work in a short time. A device is sought.
For article picking or article sorting, there are provided a plurality of frontage doors provided with closing members for storing the goods, and driving means for individually opening and closing the closing members of the frontage doors, and the goods are loaded when the closing member is opened. After that, there is known an article sorting apparatus that prevents a sorting error by closing a closing member in response to an input completion signal input by an operator. (For example, refer to Patent Document 1).
In addition, as a driving mechanism for the closing member of such a device, there has been proposed a device using a slanted or crescent-shaped cam having an arcuate cam surface whose distance from the center increases according to the rotation angle (for example, Patent Documents). 2, see Patent Document 3).

Japanese Patent No. 4119861 Utility Model Registration No. 3157666 Japanese Patent No. 5149775

FIG. 9 is a diagram for explaining an example of an apparatus for preventing erroneous operation of article picking or article sorting, FIG. 9A is a perspective view for explaining the whole, and FIG. 9B is an enlarged explanation of a drive mechanism for a frontage closing member. It is a figure to do.
The conventional article picking or article sorting error prevention device 80 includes a plurality of article openings 5, and each article opening 5 is provided with an opening closing member 7.
When the worker reads the work instruction or the identification information 23 of the article 22 with the reading device 24, the control device 25 of the erroneous work prevention device 80 transmits a signal for opening the opening closing member 7 of the predetermined article opening 5.
As a result of receiving the signal for opening the frontage closing member 7, when the frontage closing member 7 of the specific article frontage 5 is opened, the operator picks the article from the article frontage 5 in which the frontage closing member 7 is opened, or the article frontage. After the article sorting to 5, by blocking the optical path 33 of the foot switch, a confirmation signal for picking work of the corresponding article or article sorting work is transmitted to the control device 25.

When the control device 25 that has received the confirmation signal releases the pressure of the air actuator 84 that gives the driving force to open the frontage closing member 7, the biasing force of the linear drive means disappears. This completes the picking or sorting of items.
By repeating the same operation, the worker completes the picking of articles from each article front or the sorting of articles to the goods front.
In this apparatus, as shown in FIG. 9B as seen from the side of the article frontage 5, the frontage closing member 7 is attached to the rotary shaft 81 provided on the upper part of each article frontage 5. In addition, each rotating shaft 81 is provided with a ball-shaped cam 83 having an arcuate cam surface in the vicinity of one of the structural members 82 of each article frontage.
Then, the cam surface of the slanting cam 83 is pressed by driving the air actuator 84 that is operated by compressed air, whereby the rotary shaft 81 is rotated to a predetermined position to open the closing member 7 of the article frontage 5, and the article picking or article Sorting is possible.

As described above, in both the article picking and the article sorting operations, it is possible to work only on the article opening 5 in which the opening closing member 7 is opened. Therefore, an error may occur in the article picking or the article sorting operation. It is possible to realize picking of goods that are not present and work for sorting goods.
However, in this apparatus, since the ball-shaped cam 83 and the air actuator 84 are provided at the left and right ends of the frame that defines the article front or the intermediate part, it is inevitable that a dead space is generated in the article front.

The article picking or article sorting error prevention apparatus has a number of article openings as shown in FIG. Further, in the article distribution center, by arranging a large number of such devices, efficient article picking or article sorting work is realized in a short time.
Therefore, since the members arranged on the left and right of the article frontage reduce the effective space of each article frontage, there has been a problem that work efficiency is reduced in picking or sorting goods.

The subject of the present invention is that one outer peripheral surface side of the central surface inclined to the front end portion at right angles to the central surface from the intersection of the central surface including the central axis of the cylindrical cam and the rear end portion side, and the other The center of the drive shaft of the linear drive means provided with the rotation prevention means around the axis at the rear end portion of the cylindrical cam having the first cam slope provided on both the outer peripheral surface side and the central axis of the cylindrical cam The cylindrical body includes two cam followers that are arranged so as to coincide with the center of the cylindrical body and are arranged inside the cylindrical body, the tip portions that contact each of the first cam slopes having a spherical surface or a spheroid surface. Rotating means that is arranged in a line-symmetrical position with respect to the central axis of the cylinder and that allows the cylindrical body to be rotated by the linear driving means is attached to each of a plurality of article openings, and the driving force to the linear driving means is reduced. The opening / closing operation of the frontage closing member of a predetermined article It can be solved by erroneous work device for preventing article picking or article sorting characterized by Rukoto.
Further, the rotation preventing means is constituted with the rod-like body extending in the cylindrical cam side to the drive shaft and spur row from said linear drive means, the receiving hole of the rod-shaped body provided on the end surface of the rear end portion of the cylindrical cam A member that protrudes from the drive shaft surface and a contact portion between a fixed member provided on the outer surface of the linear drive means, or a drive shaft of the linear drive means provided with rotation preventing means It is an erroneous work prevention device for the above-described article picking or article sorting.
Further, it is any of those fixed by screwing screw groove provided on the tip portion of the holding member in a fixed nut which is provided on the outer surface of Installing with members and the attachment member fitted in the cylindrical body the article picking or This is an apparatus for preventing erroneous work for sorting goods.
Further, the article picking provided with a stopper having a stop surface for the contact flat surface and the surface at the tip portion extending the flat plate surface direction of the support for supporting the cylinder from the annular portion fitted to the cylindrical body Alternatively, it is a device for preventing erroneous work for sorting articles.
One end of a first curved surface portion that extends above the stop surface is connected to the tip portion , and the second curved surface portion whose direction is opposite to that of the first curved surface portion is connected to the other end of the first curved surface portion. One end of the second curved surface portion is connected to the other curved surface portion, and the other end of the second curved surface portion is a stopper integrated with the annular portion.
Further, in the article picking or article sorting erroneous work preventing apparatus, the linear driving means is either an air actuator or a linear motor.
This is an apparatus for preventing erroneous operation of the article picking or article sorting, which is one of the above.

According to the present invention, one outer peripheral surface side and the other outer peripheral surface of the central surface inclined toward the front end portion at right angles to the central surface from the intersection of the central surface including the central axis of the cylindrical cam and the rear end portion side. The center of the drive shaft of the linear drive means provided with the rotation prevention means around the shaft at the rear end portion of the cylindrical cam having the first cam inclined surface provided on both sides of the cylindrical cam and the cylindrical body The two cam followers having a tip or a spheroid surface in contact with each of the first cam inclined surfaces are arranged in the cylindrical body in a manner matching the center of the cylindrical body. A rotating means that is arranged in a line-symmetrical position with respect to the axis and that allows the cylindrical body to be rotated by the linear driving means is attached to each of a plurality of article openings, and by applying a driving force to the linear driving means Open / close the opening closing member It is possible to provide an erroneous working device for preventing article picking or article sorting.

FIG. 1 is a front view illustrating an article picking or article sorting error prevention apparatus according to the present invention. FIG. 2 is a diagram for explaining an example of an apparatus for opening and closing a frontage closing member for an article picking or article sorting error prevention apparatus according to the present invention. 2A is a plan view of the state in which the frontage closing member is opened as seen from above, and FIG. 2B is a side view of FIG. 2A as seen from the direction B. FIG. 3 is a view for explaining another example of the device for opening and closing the frontage closing member of the article picking or goods sorting error prevention device of the present invention, and is a plan view of the state where the frontage closing member is opened from above. FIG. FIG. 3A is a diagram illustrating an example in which a circular opening is provided in the frontage closing member, and FIG. 3B is a diagram illustrating an example in which a rhombus-shaped opening is provided. FIG. 4 is a view for explaining an example of a front end closing member holder for an article picking or article sorting error prevention apparatus according to the present invention. 4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a view from the back. FIG. 5 is a view for explaining an example of the stopper of the rotation means of the frontage closing member of the article picking or article sorting erroneous work prevention apparatus of the present invention, and the cylinder comes to a stop when the stopper contacts the flat plate surface. It is a figure explaining a state. 5A is a diagram viewed from the axial direction, and FIG. 5B is a diagram viewed from the right direction of FIG. 5A. FIG. 6 is a view for explaining an example of the rotation means of the frontage closing member of the product picking or product sorting error prevention device according to the present invention. 6A is a top view of a state where the apparatus is attached to the apparatus, FIG. 6B is a cross-sectional view perpendicular to the central axis of the cam follower portion, and FIG. 6C includes the central axis at the front and rear of the cylindrical cam. It is sectional drawing cut | disconnected by the surface. FIG. 7 is a view for explaining an example of a cylindrical cam and a driving means for operating a rotating means used for preventing erroneous work of article picking or article sorting according to the present invention. FIG. 7A is a perspective view in which the rear end portion of the cylindrical cam is directed downward. FIG. 7B is a plan view seen from a direction perpendicular to the stop axis. FIG. 8 is a view for explaining a cylindrical cam for operating a rotating means used for preventing erroneous operation of article picking or article sorting according to the present invention. FIG. 8A is a front view with the rear end portion of the cylindrical cam downward. FIG. 8B is a plan view seen from the distal end direction of the cylindrical cam. FIG. 8C is a plan view seen from the rear end direction of the cylindrical cam. Moreover, FIG. 8D is the figure seen from the side surface direction of FIG. 8A. FIG. 9 is a view for explaining a conventional article picking or article sorting error prevention apparatus, FIG. 9A is a perspective view for explaining the whole, and FIG. 9B is an enlarged view of an opening / closing door drive mechanism. It is a figure to do.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view illustrating an article picking or article sorting error prevention apparatus according to the present invention.
An article picking or article sorting error prevention apparatus 1 shown in FIG. 1 includes a vertical frame 3a, a horizontal frame (not shown), a rotation means holding frame 3c provided on the front surface of the horizontal frame, and a shelf board. It is provided with the product openings 5 formed in 3d and arranged in four columns and four rows.
The rotation means 11 attached to the rotation means holding frame 3c is attached to the upper part of each article opening 5.

In addition, each article frontage 5 is provided with a frontage closing member 7 that is inserted and fixed in a groove-like portion formed in the frontage closing member holder 7.
Each frontage closing member 7 is attached to the frontage closing member holder 6 by a fixing screw (not shown), and the frontage closing member holder 6 has a screw groove provided in the holding member 9 protruding from the inside of the groove-shaped portion. It is screwed into the fixing annular body 15 and screwed into a fixing nut 9a provided on the outer surface so as not to be loosened during operation.
A cam follower 18 is attached to the cam follower mounting annular body 18, and a driving force for rotating the cylindrical body from a cylindrical cam that linearly moves in the axial direction of the cylindrical body provided in the cylindrical body 13 is generated by the cam follower 18. Giving.

Each rotating means 11 is suspended by a suspension member 19 on a support 3c provided on the front surface of the lateral frame 3b, and the suspension member 19 is further fixed by a fixing screw 19a.
Thus, by attaching to the support body with the suspension member 19, the rotation means 11 can be easily attached and detached, so that the manufacture and maintenance of the apparatus can be facilitated.

Next, the article picking operation will be described as an example. When the operator reads the article container identification information 21 of the article container 20 by the reading unit 24, the control device 25 selects the article picking apparatus corresponding to the read article container identification information 21. If this is the case, the corresponding article picking information is received from the management device (not shown) and the article picking operation is started.
With the start of the article picking operation, the control device 25 transmits a signal for opening the frontage closing member 7 of the article frontage 5 that stores the article corresponding to the article picking information.
The operator takes out the article from the article opening 5 in which the opening closing member 7 is opened, and blocks the optical path 33 of the foot switch from the light emitting means 30 to the light receiving means 32 with his / her foot. A signal for confirming the completion of picking of the article from the frontage 5 is transmitted, and the taken-out article is put into the article container 20.

As a result, the control device 25 notifies the worker of the confirmation of work by voice such as “thank you” from the speaker 26 upon receipt of the confirmation signal, and then proceeds to the picking work of the next article and moves to the same article. Perform picking work.
In addition, when taking out a plurality of articles from the same article front, instead of the work of checking one by one as described above, for example, when taking out three of the same articles, the control device 25 While opening the opening closing member 7 of the corresponding article opening 5, the speaker 26 may notify the total number of articles to be picked as “3, 3,... In this case, the operator can complete the picking of the article from the corresponding article front by inputting a completion signal after picking up the total number of three together.

Next, description will be given by taking as an example the case of an article sorting operation for each article frontage by the apparatus of the present invention.
When the article container 20 containing the articles is delivered, when the operator reads the article container identification information 21 by the reading means 24, the control device 25 causes the erroneous operation of sorting the articles corresponding to the read article container identification information 21. In the case of the prevention device 1, the corresponding item sorting information is received from the management device (not shown) and the item sorting operation is started.

  Next, when the article identification information 23 of the article 22 taken out from the article container 20 is read by the reading means 24, the control device 25 operates the rotating means 11 attached to the article frontage 5 corresponding to the article sorting information, and The front opening closing member 7 of the product front is opened.

The operator inserts the article 22 into the article opening 5 in which the opening closing member 7 is opened, and blocks the optical path 33 of the foot switch from the light emitting means 30 to the light receiving means 32 with the foot, thereby preventing the control device 25. Then, a confirmation signal of completion of the insertion into the current article front is transmitted.
In addition, as shown in FIG. 1, by providing a portion that is higher than the floor surface on which the article sorting device is installed, such as a ridge 34, at the bottom of the optical path 33 of the foot switch, Can give different feelings, so that the operator can easily recognize the optical path 33 of the foot switch without looking at the floor surface. Therefore, the operator can reliably input a work completion signal in a short time, which is effective for quickly performing the article sorting work without error.

  Further, as the reading means 24 for the article identification information 23, a wearable reading means attached to a hand, a finger, or the front surface of the body can be used. In particular, when the article 22 is small, the article 22 is taken out from the container 20 with one hand, and the article identification information 23 is read by the wearable reading means attached to the other hand or the front of the body. Since the work from the start to the completion of the article sorting work can be performed at this place, the distance traveled by the worker is shortened, and the work efficiency can be increased.

  In the above description, an example has been described in which articles are sorted one by one into the corresponding article front. However, in the article sorting apparatus according to the present invention, when a plurality of articles are sorted into the same article front, the corresponding goods front. While opening the closing member 7 and repeatedly instructing the total number of insertions from the speaker 26 as “3, 3, 3,... It is also possible to perform an article sorting operation in which the time required for article sorting is shortened compared to the article sorting operation.

  Further, in the article picking or article sorting erroneous work prevention apparatus of the present invention, after inputting the work completion signal, the frontage closing member is closed and the speaker 26 is informed to the operator by voice such as “thank you” or optically. By telling the worker that the corresponding work has been completed using the display device or the like, the worker can fully recognize the progress of the article sorting work. Accordingly, it is possible to perform an article picking or article sorting operation that is less prone to work errors.

FIG. 2 is a diagram for explaining the attachment state of the rotating means and the closing member of the apparatus for picking or sorting wrong articles according to the present invention. FIG. 2A is a top view of a state in which the closing member is opened.
2B is a view of the portion B in FIG. 2A as viewed from the right side. The rotating means 11 is a suspension member from above with respect to a plate-like rotating means support 3c provided on the front surface of the lateral frame 3b. It is suspended by 19 and further fixed by a fixing screw 19a.
The cylindrical body 13 of the rotating means 11 is fitted with two fixing annular bodies 15 at intervals, and the closing member 7 is formed in a groove shape in the screw hole provided in the fixing annular body 15. Since the closing member mounting member 9 is screwed from the closing member holder 6 side sandwiched and held in the opening and is fixed by the fixing nut 9a, no loosening occurs during operation.
Further, two stoppers 16 for specifying the opening position are mounted adjacent to the fixing annular body 15. The position of the front opening closing member can be set individually when opening the front opening and closing the front opening for each stopper. Therefore, when the number of steps of the opening increases in the vertical direction, it is possible to set the opening / closing position of the frontage closing member of the article frontage at each step to a position where the operation is easy.

Further, openings 12 a and 12 b having different areas of the openings are provided on the holding surface of the opening closing member 7 of the closing member holder 6. Thus, by providing the opening part from which a magnitude | size differs, the intensity | strength with respect to the stress which acts on a closing member holder can be raised with the weight reduction of a frontage closing member. Therefore, it is possible to provide an efficient device with low energy consumption.
In addition, it is preferable to use a lightweight and cushioning material such as a foamed polystyrene material for the frontage closing member 7. This reduces the air resistance during the opening / closing operation of the article frontage.

FIG. 3 is a view for explaining another example of the rotating means and the closing member of the article picking or article sorting erroneous operation preventing apparatus of the present invention, both of which are in the state in which the closing member is opened. It is the figure seen from the upper part.
FIG. 3A shows a case where a plurality of circular through holes 7 a are provided in the frontage closing member 7.
Moreover, FIG. 3B provides a plurality of diamond-shaped through holes 7b.
As described above, by providing a through-hole in the frontage closing member 7, it is possible to reduce the air resistance during the opening / closing operation, and to check the inside of the product frontage even when the frontage is closed by the frontage closing member. Therefore, it is possible to realize accurate and efficient article picking and article sorting work without leaving any articles from the article frontage.

FIG. 4 is a diagram for explaining in detail the frontage closing member holder of the article picking or article sorting error prevention apparatus of the present invention.
FIG. 4A is a view of the frontage closing member holder as viewed from the front side of the apparatus of the present invention. Moreover, FIG. 4B is the figure seen from the side which attaches the frontage closing member 7 to a rotation body. Moreover, FIG. 4C is the figure seen from the back direction of FIG. 4A.
The frontage closing member holder is made of a lightweight material such as an aluminum alloy. Furthermore, as shown to FIG. 4A and FIG. 4C, intensity | strength can be raised with the weight reduction of a frontage holding member by providing opening part 12a, 12b from which a magnitude | size differs in the frontage closing member attachment surface of both surfaces.
Further, the frontage closing member holder can be fixed by tightening a nut in a screw groove at the tip of the closing member attaching member 9 inserted into the attaching holes 9a, 9b.
When a lightweight foamed plastics plate is used as the frontage closing member 7, it is inserted into the groove-like portion sandwiched between the front and back members as shown in FIGS. By screwing fixing screws into the plurality of set screw holes 12c, the frontage closing member 7 can be fixed so as not to drop off during operation.

FIG. 5 is a view for explaining an example of a stopper for setting the rotation range of the rotating body of the article picking or article sorting error prevention apparatus of the present invention.
The stopper 16 of the present invention is made of a lightweight and strong member such as an aluminum alloy having a uniform thickness, and is a screw hole provided in an annular portion 16a fitted to the cylindrical body 13 of the rotating means 11. A set screw 16c is screwed into 16b and fixed to the cylindrical body 13.
The stopper has an extension 16d extending to one of the two surfaces that form a right angle of the holder of the rotating means located in the tangential direction of the lower portion of the annular portion 16a. The distal end portion of the extension portion 16 extends to the portion of the annular portion that is perpendicularly projected onto the holding body surface, and includes a surface contact portion 16f that contacts the contact surface 16e of the holding body.
In addition, a first curved surface 16g having a vertex is connected obliquely above the front end direction of the surface contact portion 16f, and the first curved surface 16g is connected to one end of a second curved surface 16h whose vertex direction is opposite. Furthermore, the other end of the second curved surface extends in the direction of the annular portion 16a and is integrated with the annular body, and the outer surface from the annular body to the surface contact portion is substantially S-shaped. ing.

As described above, the portion extending from the annular body to the outer surface is provided with the curved surface portion 16g having a large mass at the distal end portion, and the second sectional area is smaller than the distal end portion due to the substantially S-shaped curved surface from the distal end portion. The curved portion 16h is integrated with the lower portion of the annular portion 16a.
Therefore, since the curved surface portion having a contact surface with a large mass between the annular portion and the tip portion is coupled by the curved surface portion having a small cross-sectional area, the stopper reduces the impact acting on the rotating body by exerting a spring action. be able to.
Further, two stoppers 16 are adjacent to each of the two fixing annular bodies 15 provided on the cylindrical body 13 of the rotating means 11, and are in contact with either the horizontal member or the vertical member of the rotating means. It is possible to exhibit an effect in mitigating the impact acting on the rotating body both when the frontage is closed by the frontage closing member and when the frontage is opened.

FIG. 6 is a view for explaining the rotation means of the article picking or article sorting error prevention apparatus according to the present invention, and FIG. 6A is a view of the state in which the frontage closing member is opened as viewed from above.
6B is a cross-sectional view of the rotating body cut along a plane passing through the center in the thickness direction of the cam follower mounting annular body in FIG. 6A.
FIG. 6C is a cross-sectional view of the rotating body of FIG. 6A cut along the center line from the cam follower to a part of the linear drive means.
The rotating means 11 supports the cylindrical body 13 by a support body 14 so as to be rotatable. The cylindrical body 13 is equipped with a cam follower mounting annular body 17 and two cam followers 18 are mounted symmetrically with respect to the central axis. The tip of each cam follower protrudes from the cam follower mounting annular body 17 toward the central axis.

In addition, the cam follower 18 uses a cam follower having a spherical tip and a spheroid surface at the tip that contacts the inclined surface, so that the cam follower can be moved from the cylindrical cam to the cam follower as compared with the case of using a prismatic or cylindrical cam follower. Since the driving force can be transmitted smoothly and continuously, the cylindrical body 13 can be smoothly rotated.
Further, screws provided at one end of the holding member 9 are screwed into the left and right fixing annular bodies 15 fitted to the cylindrical body 13, and further, fixing nuts 9a are arranged and screwed on the surfaces of the fixing annular bodies 15a and 15b. Thus, the fixing of the holding member 9 can be securely fixed without loosening.

6C, a drive shaft 42 of the linear drive means 40 is coupled to the rear end portion 60 of the cylindrical cam 50 so as to be rotatable, as shown in a sectional view in a plane including the central axis of the cylindrical body in the vicinity of the cam follower. In the held cylindrical body 13, the central axis of the cylindrical cam is arranged so as to coincide with the central axis of the cylindrical body 13. The linear drive means 40 is provided with a rotation preventing means 44 for preventing the cylindrical cam 50 from rotating about the central axis.
Examples of the rotation prevention means 44 include rotation prevention means for preventing rotation by engagement of a fixed member protruding from the linear drive means and a member protruding in the radial direction of the shaft from the drive shaft 42.

Rotating means 11 provided with a front opening closing member (not shown) on the holding member 9 projecting from the outer surface of the cylindrical body 13 is arranged at the upper part of each product front opening, and predetermined by the front opening closing member (not shown). The product opening can be opened and closed.
The linear driving means 40 may be an air actuator provided with an air piston, a linear motor actuator, or the like, but it is preferable to use an air actuator with a simple structure. Further, when an air actuator provided with a drive shaft rotation prevention mechanism is used, the above-described rotation prevention member does not have to be mounted.

FIGS. 7A and 7B are diagrams for explaining a member in which a linear cam is attached to a cylindrical cam of the apparatus for preventing erroneous operation of article picking or article sorting according to the present invention, FIG. 7A is a perspective view, and FIG. 7B is a horizontal axis. It is the arrange | positioned top view.
The cylindrical cam 50 passes through an intersection 51 with the axial center plane of the cylindrical cam, and on the distal end side is perpendicular to each section screen 56a, 56b perpendicular to the center plane, and the cam slope 52a It has a cam slope 52b (not shown) that is point-symmetric with respect to a point on the central axis of the cylindrical cam.
In this figure, each section screen does not coincide with the central axis, but is shifted in order to secure the tool margin of the cutting tool.
Further, the linear drive means 40 has a drive shaft 42 protruding from the front end side of the linear drive means 40 coupled to the rear end portion of the cylindrical cam 50, and has an attachment member 41 that is attached to a cylindrical body (not shown). ing.

Further, one end of two rotation preventing members 45a and 45b is coupled to the tip end portion 44 of the linear drive means 40, and the other end is fitted into holes 47a and 47b provided in the cylindrical cam. Accordingly, rotation around the axis of the cylindrical cam 50 can be prevented even in the case of a linear drive means that does not have a rotation prevention function.
The tip 53 of the cam slope 52a of the cylindrical cam 50 is chamfered so as not to be damaged during assembly work.
Further, one outer peripheral surface side and the other outer peripheral surface side of the central surface inclined toward the front end portion at right angles to the central surface from the intersection of the central surface including the central axis of the cylindrical cam and the rear end portion side. It has the 1st cam slope provided in both .

  Further, one end of two rotation preventing members 45a and 45b is coupled to the tip end portion 44 of the linear drive means 40, and the other end is fitted into holes 47a and 47b provided in the cylindrical cam. Accordingly, rotation around the axis of the cylindrical cam 50 can be prevented even in the case of a linear drive means that does not have a rotation prevention function.

FIG. 8 is a view for explaining an example of the cylindrical cam of the present invention.
FIG. 8A is a plan view projected onto a plane parallel to the central axis, and FIG. 8B is a plan view seen from the distal end side of the cylindrical cam. FIG. 8C is a plan view seen from the rear end side. 8D is a view seen from the side. The cylindrical cam 50 is composed of one outer peripheral surface and the other outer periphery inclined from the intersection of the surface including the central axis 54 of the cylindrical cam and the rear end toward the front end. First cam slopes 52a and 52b are provided on both sides .
A chamfered portion 53 is provided at the tip of each cam slope.
The rear end portion 60 has a drive shaft attachment portion 62 and a rotation prevention means attachment portion 64 for attaching the drive shaft of the linear direction drive means.
The angle θ formed by the cam slant surface and the central axis of the cylindrical cam is determined by the diameter of the cylindrical cam, the amount of movement of the linear drive shaft, the opening / closing angle of the front opening closing member, etc. Thus, it is possible to obtain an opening / closing angle that does not hinder the loading and unloading of the article into the article opening.

Further, according to the present invention, since the contact surface of the cam follower that contacts the cam surface is a curved surface such as a spherical surface or an elliptical surface, the rotating body to which the cam follower is attached can be smoothly and largely rotated by the movement of the cam. Therefore, when the frontage closing member is opened, the opening can be greatly opened, and thus an erroneous work prevention device for article picking or article sorting with good workability can be provided.
In addition, as the cylindrical cam and cam follower of the present invention, it is preferable to use a synthetic resin material typified by a hard low friction material such as oil-impregnated polyamide. Cylindrical cams made of these materials can perform stable operation over a long period of time without performing operations such as applying lubricant.

DESCRIPTION OF SYMBOLS 1 ... Product picking or missorting prevention device of goods sorting, 3a ... Vertical frame, 3b ... Horizontal frame, 3d ... Shelf board, 5 ... Product frontage, 7 ... Frontage closing member, 9 ... holding member, 9a ... fixing nut, 11 ... rotating means, 13 ... cylindrical body, 14 ... support, 15a, 15b ... fixing ring Body, 16 ... stopper, 16a ... annular portion, 16b ... tangential portion , 17 ... cam follower mounting annular body, 20 ... article container, 21 ... article container identification information, 22 ... -Article, 23 ... Article identification information, 24 ... Reading means, 25 ... Control device, 26 ... Speaker, 30 ... Light emitting means, 32 ... Light receiving means, 33 ... Foot Optical path of the switch, 34... Ridge, 40... Linear drive means, 41. Mounting member, 42 ... drive shaft, 46a, 46b ... cam follower, 44 ... rotation preventing means, 45a, 45b ... rotation preventing member, 47a, 47b ... hole, 48 ... electrical connection Wiring for use 50... Cylindrical cam 51... Intersection with the axial center surface of the cylindrical cam 53 53 Jade cam 51 Rotating shaft 53 Jade cam 50 ... Cylinder cam, 54 ... Axial center plane, 56a, 56b ... Division screen, 60 ... Rear end of cylindrical cam, 71a, 71b ... Hook member, 72a ... Set Screw hole, 73 ... L-shaped member, 74 ... vertical direction portion, 75 ... drop-preventing member, 80 ... conventional work prevention device, 81 ... rotary shaft, 82 ...・ Structural member, 83 ... Jade cam, 84 ... Air actuator

Claims (6)

On both one outer peripheral surface side and the other outer peripheral surface side of the central surface inclined toward the front end portion at right angles to the central surface from the intersection of the central surface including the central axis of the cylindrical cam and the rear end portion side The center of the drive shaft of the linear drive means provided with the rotation prevention means around the shaft at the rear end portion of the cylindrical cam having the provided first cam slope , and the center axis of the cylindrical cam and the center of the cylinder body Two cam followers that are aligned and connected to each other and arranged inside the cylindrical body, and whose tip portions that contact each of the first cam inclined surfaces have a spherical surface or a spheroid surface are axisymmetric about the central axis of the cylindrical body The rotation means arranged at the position and capable of rotating the cylindrical body by the linear drive means is attached to each of a plurality of article fronts, and a predetermined product front is provided by applying a driving force to the linear drive means. It is characterized by opening and closing the frontage closing member Erroneous working device for preventing article picking or article sorting that. That said anti-rotation means, constituted the rod-shaped body extending in the cylindrical cam side to the drive shaft and spur row from said linear drive means, the receiving hole of the rod-shaped body provided on the end surface of the rear end portion of the cylindrical cam, Either configured by a contact portion between a member protruding from the drive shaft surface and a fixing member provided on the outer surface of the linear drive means, or a drive shaft of the linear drive means provided with rotation prevention means The apparatus for erroneous work picking or sorting of articles according to claim 1, wherein Any of claim 1 or 2, characterized in that fixed by screwing screw groove provided on the tip portion of the holding member in a fixed nut which is provided on the outer surface of Installing with members and mounting members fitted on the cylindrical body An apparatus for preventing erroneous operation of article picking or article sorting according to claim 1. Claims, characterized in that it comprises a stopper having a stop surface for the contact flat surface and the surface at the tip portion extending the flat plate surface direction of the support for supporting the cylinder from the annular portion fitted to the cylindrical body Item 4. An apparatus for preventing erroneous operation of article picking or article sorting work according to any one of Items 1 to 3 . One end of a first curved surface portion that extends above the stop surface is connected to the tip portion , and the second curved surface portion whose direction is opposite to that of the first curved surface portion is connected to the other end of the first curved surface portion. 5. The article picking or article sorting error prevention apparatus according to claim 4 , wherein one end of the second curved surface portion is connected to the other curved surface portion, and the other end of the second curved surface portion is a stopper integrated with the annular portion. It said linear drive means, an air actuator, the article picking or erroneous working device for preventing article sorting work according to claims 1, wherein in any one of 5 to be either linear motor.

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