JPH0820428A - Slide shoe type sorter - Google Patents

Abstract

PURPOSE:To prevent the occurrence of impact noise in maintaining a state that a partial shoe sticks fast to a guideway of a guide rail in time of shoe movements as well as to promote a decrease in manufacturing cost and a reduction in noise. CONSTITUTION:A guide rail 31 moving an article extruding shoe in the cross direction of a conveying route by means of a slat is provided with a first shoe guideway 34 moving the shoe in a direction of an angle theta to the traveling direction as a guideway where a shoe bearing 18 contacts, and a second shoe guideway 35 to be smoothly continued to and end of this forst shoe guideway 34, respectively. In this constitution, the second shoe guideway 35 is formed into a curved surface smoothly extending up to a position where a travling velocity V0 of the shoe reached to the end of the first shoe guideway 34 in the cross direction of the conveying route becomes almost zero due to frictional force acting on the shoe.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is equipped with a slat conveyor slat having an article pushing shoe movable in a direction orthogonal to the running direction of the slat. The present invention relates to a slide shoe sorter that sends out articles to a sorting and conveying path branched from a conveying path of a slat conveyor.

[0002]

2. Description of the Related Art As a sorting device for sorting articles into a plurality of sorting and conveying paths prepared at predetermined positions, conventionally, articles slid on slats of slat conveyors that convey articles in a direction orthogonal to the traveling direction of the slats. Various slide shoe sorters have been proposed which are equipped with an extrusion shoe and which convey the conveyed articles on the slat to a sorting and conveying path branched from the conveying path of the slat conveyor by moving the shoe for extruding the article.

2 to 4 show a conventional example of the slide shoe sorter. The slide shoe sorter 10 includes a slat conveyor 1 for carrying an article by moving a slat 3 on which the article 6 is carried in the article carrying direction, and a slats in a direction orthogonal to the running direction of the slat 3. In the sorting zone S equipped with the article pushing shoe 4 mounted on the slat 3 and the sorting transport path 7 branched from the transport path of the slat conveyor 1, the article pushing shoe 4 is moved to the sorting transport path 7 side. The shoe driving means 5 is provided, and the articles 6 on the slats 3 are sent out to a predetermined sorting and conveying path 7 by the article pushing shoes 4.

As shown in FIG. 2, the slats 3 of the slat conveyor 1 are supported by endless chains 2 whose both ends run in the article conveying direction (the arrow (a) direction in the figure). . Further, as shown in FIG. 3, the shoe driving means 5 is provided in each sorting zone S corresponding to each sorting and conveying path 7 diverted from the conveying path by the slat conveyor 1, and conveys on the slat conveyor 1. The article extruding shoe 4 is moved so that the article 6 thus transferred is transferred to the corresponding sorting and conveying path 7.

Specifically, as shown in FIG. 2, the shoe driving means 5 is brought into contact with a bearing (see FIG. 4) on a support shaft projecting below the slats 3 of the article pushing shoe 4. A bar member for moving the shoe 4 for pushing out the article in a direction orthogonal to the conveying direction, which is guided in an oblique direction by an actuator 8 which is operated by a control means (not shown), and is provided on one side of the slat conveyor 1 (the sorting conveying path 7). The article transfer is realized by moving and aligning the article pushing shoes 4 waiting on the opposite side) obliquely in the diversion direction of the sorting and conveying path 7. In the example shown here, the sorting / conveying path 7 is a roller conveyor as shown in FIG.

As shown in FIG. 4, the shoe 4 for pushing out the article is normally movably supported in a direction orthogonal to the traveling direction of the slat 3 and is orthogonal to the traveling direction of the slat 3 by the shoe driving means 5. And a shoe cap 14 which is mounted on the shoe slide 13 and serves as a contact portion with an article when the article is pushed out to the sorting and conveying path 7. As described above, the shoe slide 13 has a support shaft 17 protruding downward from the slat 3, and the support shaft 17
A bearing (shoe bearing) 18 which is supported by the shoe driving means 5 and serves as an abutting portion during a moving operation.
And are equipped with.

The slats 3 of the slat conveyor 1
Can be circulated in a range from the transport start point to the transport end point by the endless chain 2, and on the return side thereof, as shown in FIG. 5, the articles 6 are sorted by the shoe drive means 5 to push them to the sorting transport path 7. A return guide rail 20 for returning the article pushing shoe 4 moved to the transport path 7 side to the standby position on the side opposite to the sorting transport path 7.
Is equipped with.

The return guide rail 20 has a guide surface 2 on which the bearing 18 of the shoe 4 for pushing out the article abuts.
The first guide rail 22 formed in a straight line inclined from the sorting and conveying path 7 side toward the standby side and the guide surface 23 on the standby side with which the bearing 18 abuts along the traveling direction of the slat 3. The linear guide rail 2
4 is provided.

[0009]

However, in the movement of the article pushing shoe 4 by the conventional return guide rail 20 described above, when the article pushing shoe 4 arrives at the standby side, the article pushing shoe 4 moves. The bearing 18 is shown in FIG.
As shown in, there is a problem that the second guide rail 24 on the standby side collides vigorously and becomes a noise source that generates a loud collision noise.

Therefore, conventionally, in order to solve such a problem, a magnetic attraction type control device for keeping the bearing 18 in close contact with the first guide rail 22 by an attraction force by a magnetic force is provided, or It is considered to equip the guide surface of the second guide rail 24 with a cushioning material for cushioning the collision of the bearing 18. However, if such a countermeasure is taken, the mechanism for moving and operating the article pushing shoe 4 becomes complicated. Therefore, there is a problem in that the cost of the device is increased.

Therefore, an object of the present invention is to solve the above-mentioned problems. To solve the above problem, an article extruding shoe that is slidably mounted in a direction orthogonal to the running direction of a slat is provided as a part of the article extruding shoe. When moving the slat in the direction orthogonal to the traveling direction by the guide rail having the guide surface with which the abuts, without using a magnet suction type control device or a cushioning material,
A slide that can maintain a state in which a part of the shoe for pushing out articles is in close contact with the guide surface of the guide rail to prevent the generation of collision noise, and at the same time achieve a reduction in manufacturing cost and a reduction in noise. It is to provide a shoe sorter.

[0012]

The above object of the present invention is to provide a slat conveyor that conveys an article by moving a slat on which the article is placed in the conveyance direction of the article, and a slidable conveyor in a direction orthogonal to the traveling direction of the slat. An article pushing shoe movably mounted on the slat and a guide rail for moving the article pushing shoe on the slat in the width direction of the conveyance path by the slat by a guide surface with which a part of the article pushing shoe abuts. (31) is a slide shoe sorter for sending articles on a slat to a sorting and conveying path branched from the conveying path of the slat conveyor by means of an article pushing shoe that moves in the width direction of the conveying path by the slats, The rail (31) serves as a guide surface with which a part (18) of the shoe for pushing out the articles comes into contact, and the rail has a direction of an angle θ with respect to the traveling direction. The first shoe guide surface (34), a second shoe guide surface smoothly continuous to the first end of the shoe guide surface for moving the shoe article extrusion (35)
The second shoe guide surface (35) has a moving speed V _{0 in} the width direction of the conveying path of the article pushing shoe reaching the end of the first shoe guide surface (34) for pushing the article. This is achieved by a slide shoe type sorter characterized in that it has a curved surface shape that smoothly extends to a position where it becomes substantially zero due to the frictional force acting on the shoe.

In the slide shoe sorter described above, the second shoe guide surface of the guide rail has a gravitational acceleration g, a friction coefficient μ between the article extruding shoe and the slat, and a traveling speed of the slat. V _S , an inclination angle of the first shoe guide surface with respect to the traveling direction of the slat θ, and a moving speed V _{0 in} the width direction of the conveying path of the article pushing shoe reaching the end of the first shoe guide surface is the article pushing rate. When the maximum reachable distance in the width direction of the conveying path until it becomes 0 due to the frictional force acting on the shoe is S _max , an arc-shaped curved surface having a curvature larger than the radius R ₀ obtained by the following equation (1) is obtained. The above-mentioned object can be achieved also by the formed structure.

[0014]

[Equation 2]

[0015]

In the slide shoe sorter, the article pushing shoe which is slidably mounted in the direction orthogonal to the traveling direction of the slats is provided by the guide rail having the guide surface with which a part of the article pushing shoe abuts. The collision sound generated when the slat is moved in the direction orthogonal to the running direction is
The bearing, which is a part of the shoe for pushing out the article, which is in contact with the guide surface of the guide rail for the moving operation, is separated from the guide surface in which it is first contacted, and is guided by another guide rail that is arranged oppositely. Caused by a collision with a surface.
Then, the collision sound at this time becomes larger in proportion to the speed of the article pushing shoe in the width direction of the conveying path.

However, according to the above configuration of the present invention, the guide surface of the guide rail with which the bearing, which is a part of the article pushing shoe, abuts, is at an angle θ with respect to the running direction of the slat.
A first shoe guide surface for moving the shoe for pushing out the article in the direction of, and a second shoe guide surface smoothly continuous to the end of the first shoe guide surface, and the second shoe guide surface. The surface has a moving speed V _{0 in} the width direction of the conveying path of the shoe for pushing out the article which has reached the end of the first shoe guide surface.
Has a curved surface shape that smoothly extends to a position where it becomes almost 0 by the frictional force acting on the shoe for pushing out the article, and therefore the article that has reached the end of the guide rail (that is, the end of the second shoe guide surface) The extrusion shoe does not have a force toward another guide rail that is arranged to face the guide rail that has been in contact with it until then, without using a magnetic attraction type control device or cushioning material. It is possible to prevent a collision noise from occurring by maintaining a state where a part of the extrusion shoe is in close contact, and at the same time, it is possible to reduce manufacturing cost and reduce noise.

Moreover, by making the first shoe guide surface of the guide rail linear and the second shoe guide surface arcuate, the guide rail itself can be made into a simple shape that is easy to form, It is possible to improve the rail productivity and reduce the guide rail forming cost.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The slide shoe sorter according to the present invention is a slat conveyor that conveys an article by moving a slat on which the article is placed in the conveyance direction of the article, and a direction orthogonal to the traveling direction of the slat (that is, a conveyance path by the slat). The article pushing shoe mounted on the slat slidably in the width direction and the guide surface against which a part of the article pushing shoe abuts the article pushing shoe on the slat in the width direction of the conveying path by the slat. In a slide shoe sorter that sends out the articles on the slats to the sorting and conveying path branched from the conveying path of the slat conveyor by means of an article pushing shoe that moves in the width direction of the conveying path by the slats, It has been devised to be.

The structure other than the guide rail may be the same as the conventional one. That is, the slat conveyor is shown in FIGS.
4 and the shoe for pushing out the article has a structure as shown in FIG. FIG. 1 shows a guide rail 30 used in one embodiment of the present invention. The guide rail 30 is arranged on the return side of the slat, and pushes out the article to return the article pushing shoe moved to the other end side of the slat (sorting conveyance path side) to the standby side opposite to the sorting conveyance path. The first guide rail 31 for moving the shoe for pushing out the article to the standby side of the slat, and the first guide rail 31 arranged linearly on the standby side of the slat facing the first guide rail 31. It is composed of two guide rails 32.

Here, the first guide rail 31 is
Shoe bearing 18 which is a part of the shoe for pushing out articles
As a guide surface with which the (see FIG. 4) abuts, a first shoe guide surface 34 for moving the article pushing shoe in the direction of an angle θ with respect to the traveling direction indicated by the arrow (B), and the first shoe guide surface A second shoe guide surface 35 that smoothly continues to the end of the surface 34 is provided.

The second shoe guide surface 35 is
The movement speed V _{0 of} the shoe bearing 18 in the width direction of the conveying path reaching the end of the first shoe guide surface 34 is smoothly adjusted to a position where it is almost zero due to the frictional force acting on the shoe for pushing out the article from the slat or the like. It is formed in an arcuate curved surface having an extending radius R.

[0022] More specifically, the radius R, the gravitational acceleration g, the friction coefficient mu, the running speed of the slat (the constant) V _S between the shoe and slat article extrusion, with respect to the running direction direction of the slat The inclination angle of the first shoe guide surface 34 is θ, the moving speed in the width direction of the conveyance path of the article pushing shoe reaching the end of the first shoe guide surface 34 is V ₀ , and this V ₀ is for article pushing. The radius R ₀ is set to be larger than the radius R ₀ calculated by the following equation (1), where S _max is the maximum reachable distance in the width direction of the conveying path until it becomes 0 due to the frictional force acting on the shoe.

[0023]

(Equation 3)

The reason why the curvature R of the second shoe guide surface 35 is set in this way is as follows. According to the first guide rail 31, the range L ₁ shown in FIG. 1 is a region in which the moving direction of the shoe bearing 18 is restricted by the first shoe guide surface 34, and the range L ₂ is the second shoe. This is a region where the moving direction of the shoe bearing 18 is restricted by the guide surface 35. The first shoe guide surface 3
4 guides the shoe bearing 18 in a straight line inclined at an angle θ with respect to the traveling direction of the slat.

If the second shoe guide surface 35 is not provided at the end of the first shoe guide surface 34, the article pushing shoe 4 reaching the end at the first shoe guide surface 34 will be , A constant speed V in the running direction of the slat
_{At S} , as a parabola that is struck from the end of the first shoe guide surface 34 at the initial velocity V ₀ in the width direction of the conveyance path, and the speed in the width direction of the conveyance path is gradually attenuated by the frictional force acting on the shoe for pushing out the article. Will follow the trajectory of.

In this case, the speed V of the shoe for pushing out the article in the width direction of the conveying path and the moving distance S in the width direction of the conveying path.
Becomes as shown in the following equations (2) and (3), where the elapsed time is t.

[0027]

[Equation 4]

In the above equations (2) and (3), the acceleration α is the coefficient of friction μ between the shoe for pushing out the article and the slat.
The deceleration due to is α = −μg (g is gravitational acceleration). Further, since the initial velocity V ₀ of the shoe for ejecting articles in the width direction of the conveying path is V ₀ = V _S tan θ, the above (2),
The equation (3) can be rewritten into the following equations (4) and (5).

[0029]

(Equation 5)

First shoe guide surface 3 of the shoe for pushing out articles
The maximum reachable distance (maximum moving distance) S _{max in} the width direction of the conveying path of the article pushing shoe that protrudes from the end of No. 4 is time t at which V = 0 as shown in the following equations (6) and (7). By substituting t into the above equation (4),
It can be expressed by the following equation (8).

[0031]

(Equation 6)

Then, the movement locus X of the article pushing shoe when the article pushing shoe jumps out from the end of the first shoe guide surface 34, the maximum reachable distance S _{max from the trailing} end of the first shoe guide surface 34. Arc R ₀ passing through two points of
When it is attempted to approximate by, the arc R ₀ at that time is expressed by the above equation (1).

Therefore, as in the embodiment shown in FIG. 1, the second shoe guide surface 35 is set to an arcuate curved surface having a radius of curvature R larger than R ₀ shown in the above equation (1). Thus, the shoe bearing 18 that has exited the end of the first shoe guide surface 34 maintains the state of being in close contact with the surface of the second shoe guide surface 35 and passes through the point S _max , during which the conveyance path The speed in the width direction is sufficiently damped, and almost no force is exerted on the second guide rail 32 arranged on the standby side of the slat, so that the shoe bearing 18 vigorously moves toward the second guide rail 32. Collisions can be avoided.

Therefore, it is possible to maintain the state in which the shoe bearing 18 is in close contact with the first guide rail 31 and prevent the occurrence of a collision noise without using a magnet attraction type control device or a cushioning material. It is possible to simultaneously reduce the manufacturing cost and reduce the noise.

Moreover, the first shoe guide surface 34 of the guide rail 31 has a simple linear shape, and the second shoe guide surface 3
By making 5 a simple arc shape, the guide rail 31 itself can be made into a simple shape that is easy to form, improving the productivity of the guide rail 31 and at the same time making the guide rail 3
The molding cost of 1 can be reduced.

The curved surface shape of the second shoe guide surface 35 is not limited to a simple arc shape having a single radius of curvature.

In the above-described embodiment, the movement trajectory X of the article pushing shoe when the article pushing shoe jumps out from the end of the first shoe guiding surface 34 is defined by the movement of the first shoe guiding surface 34. Although it is approximated by the circular arc R ₀ passing through the two points of the end point and the maximum reachable distance S _max , it is also possible to approximate it by an ellipse or another function.

Further, the above-mentioned one embodiment has shown the case where the article pushing shoe on the sorting and conveying path side is moved to the standby side on the return side of the slat, but the technique of the present invention is such that the articles are sorted and conveying path. It goes without saying that it can also be used in the case of moving the article extruding shoe located on the standby side in order to send it to the sorting conveyance path side.

[0039]

According to the slide shoe sorter of the present invention, the guide surface of the guide rail with which the bearing, which is a part of the shoe for pushing out articles, abuts, is pushed out in the direction of the angle θ with respect to the running direction of the slat. A first shoe guide surface for moving the first shoe guide surface, and a second shoe guide surface that smoothly continues to the end of the first shoe guide surface, and the second shoe guide surface is the first shoe guide surface. A curved surface shape that smoothly extends to a position where the moving speed V ₀ of the article extrusion shoe in the width direction of the conveying path reaching the end of the shoe guide surface becomes substantially 0 due to the frictional force acting on the article extrusion shoe. Therefore, the article pushing shoe reaching the end of the guide rail (that is, the end of the second shoe guide surface) is directed to another guide rail arranged to face the guide rail that has been in contact with the shoe. Power Even without using a magnetic attraction type control device or cushioning material, it is possible to maintain a state in which a part of the shoe for pushing out the article is in close contact with the first guide rail and prevent the occurrence of collision noise. It is possible to simultaneously reduce the manufacturing cost and reduce the noise. Moreover, by making the first shoe guide surface of the guide rail linear and the second shoe guide surface arcuate, the guide rail itself can be made into a simple shape that is easy to mold, and the guide rail can be produced. It is possible to reduce the forming cost of the guide rail while improving the property.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a guide surface of a guide rail according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a conventional slide shoe sorter.

FIG. 3 is an explanatory diagram of a sorting method using a conventional slide shoe sorter.

FIG. 4 is a front view of an article extruding shoe used in the slide shoe type sorter according to the embodiment.

FIG. 5 is an explanatory view of a guide rail in a conventional slide shoe sorter.

FIG. 6 is an enlarged view of part A of FIG.

[Explanation of symbols]

 3 slats 6 articles 13 shoe slides 14 shoe caps 17 support shafts 18 shoe bearings 30 guide rails 31 first guide rails 32 second guide rails 34 first shoe guide surfaces 35 second shoe guide surfaces

Claims (2)

[Claims] 1. A slat conveyor that conveys an article by moving a slat on which the article is placed in a conveying direction of the article, and an article mounted on the slat slidably in a direction orthogonal to the traveling direction of the slat. An extrusion shoe,
A guide rail (31) for moving the article pushing shoe on the slat in the width direction of the conveying path by the slat by a guide surface with which a part of the article pushing shoe abuts, and moving in the width direction of the conveying path by the slat Is a slide shoe type sorter that sends out the articles on the slats from the conveyance path of the slat conveyor to a sorting conveyance path that branches off from the conveyance path of the slat conveyor by the guide rail (31). ) Is in contact with the first shoe guide surface (34) for moving the shoe for pushing out the article in the direction of the angle θ with respect to the running direction and the end of the first shoe guide surface smoothly continues. A second shoe guide surface (35), wherein the second shoe guide surface (35) reaches the terminal end of the first shoe guide surface (34). A slide shoe type sorter characterized in that it has a curved surface shape that smoothly extends to a position where the moving speed V ₀ of the carriage in the width direction in the width direction becomes almost 0 due to the frictional force acting on the shoe for pushing out articles. 2. A second shoe guide surface of the guide rail.
However, the gravitational acceleration is g
The friction coefficient between them is μ, and the running speed of the slat is V _S, Slur
The inclination angle of the first shoe guide surface with respect to the running direction of the
θ, article extrusion reaching the end of the first shoe guide surface
Speed V in the width direction of the conveying path of the shoe for shoes ₀For article extrusion
Conveyance path until it becomes 0 due to the frictional force acting on the shoe
The maximum reachable distance in the width direction of S_maxThen, the following formula
(1) [Equation 1]Radius R calculated by₀Curved surface with a larger curvature than
The slurry according to claim 1, which is formed.
Id-shoe sorter.