JP2003285912A - Carrying method and its device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying device allowing high-speed carriage and highly accurate positioning of carried objects and absorption of errors in the length of a working time in each working process. <P>SOLUTION: Engagement hooks to be moved along carrying surfaces 4 of chuters 3a, 3b are put in engagement with positioning stoppers 8a, 8b for the carried objects 2 on the carrying surfaces 4. The engagement hooks push the positioning stoppers 8a, 8b to carry the carried objects 2. The high-speed carriage for the carried objects 2 is accomplished by the high-speed movement of the engagement hooks. Engagement pins 12 of positioning holding mechanisms 11 are put in engagement with holding recessed portions 9 of the positioning stoppers 8a, 8b for the carried objects 2 being carried to be positioned. The highly accurate holding of the carried objects 2 by the positioning holding mechanisms 11 results in the highly accurate positioning of the carried objects 2. When the holding of the carried objects 2 by the positioning holding mechanisms 11 is cancelled, the engagement hooks are put in engagement with the positioning stoppers 8a, 8b for the carried objects 2 to be carried. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrying method and apparatus for carrying an object to be carried along a carrying path.

[0002]

2. Description of the Related Art Conventionally, this type of transfer device is a transfer device of an assembly device in which work steps are laid out in a multi-step manner in a linear direction, and the transfer device is generally classified into three types. Are known.

First of all, the first is the most general conveyor using a conveyor, and jigs are attached to the outer surface of the belt of the conveyor at equal intervals along the circumferential direction. ing. Then, the belt body of the conveyor is intermittently driven to convey and position the object to be conveyed on the belt body.

However, in carrying and positioning by the carrying device, a timing belt or a steel belt is used as the belt body of the conveyor in order to ensure the positioning accuracy of the carried object, and the belt body of the conveyor is driven to rotate. It is common to use a position-controllable motor such as a stepping motor or a servomotor as the motor, but due to the expansion and contraction of the belt body and the distortion of the gear that rotationally drives the belt body, for example, 0.01 mm It is not easy to obtain highly accurate positioning accuracy as described below.

Further, since the jigs are fixed to the outer peripheral surface of one belt body at equal intervals, the working time of the entire object to be transported by this one belt body is different in each working process. It depends on the working time of the process with the longest working time.

Secondly, there is a transporting device which is a combination of a positioning stage using a ball screw, a belt, a gear, etc. driven by an air cylinder or a motor. Although the positioning accuracy of the transfer device depends on the accuracy of the stopper for positioning the object to be transferred and the accuracy of the ball screw or the like, highly accurate positioning can be performed.

However, in this carrying device, the number of actuators increases as the number of working steps increases, so that the control for positioning the object to be carried at the predetermined position of the positioning stage becomes complicated and expensive.

The third type is a free-flow conveyor type transfer device using a free-flow conveyor and a stopper. This transfer device can flexibly respond to the cycle time even when the work time in each work process is different, but since it uses a free-flow structure, high-speed operation is not easy, It is not easy to carry goods at high speed.

[0009]

As described above, in the first conventional conveying device, highly accurate positioning is not easy due to the influence of the expansion and contraction of the belt body and the distortion of the gear, and the belt is conveyed by the belt body. The work time of the entire transported object depends on the work time of the longest process in each work process.

Further, in the second transfer device, the number of actuators increases as the number of work steps increases, so that the control for positioning the transferred object becomes complicated and expensive.

Further, the third transfer device has a problem that it is not easy to transfer the object to be transferred at high speed because the free flow structure is used.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a transfer method and apparatus capable of accurately positioning an object to be transferred and absorbing the length error of the working time in each working process. To aim.

[0013]

According to the present invention, when an object to be conveyed is conveyed along a conveying path, a plurality of engaging bodies that move apart from each other along the conveying path are engaged with the object to be conveyed. When the objects to be conveyed are brought together and the object to be transferred is stopped, the object to be transferred is held and the engagement by the plurality of engaging bodies is released.

Then, the object to be conveyed is conveyed by the engagement of a plurality of engaging members that move away from each other along the conveying path along which the object to be conveyed is conveyed. Further, by holding the conveyed object conveyed by the engagement of the plurality of engaging bodies, the engagement of the plurality of engaging bodies is released, and the conveyed object can be positioned. Therefore, by highly accurately holding the transferred object, it is possible to position the transferred object with high accuracy. Further, by releasing the holding of the transported object, the transported object can be transported, so that the length error of the working time in each working process can be absorbed.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The construction of an embodiment of a carrying device of the present invention will be described below with reference to FIGS.

In FIGS. 1 to 3, reference numeral 1 denotes a carrier device main body, and the carrier device main body 1 is a carrier device and a positioning device of an assembling device for assembling a plurality of relatively small and lightly disassembled parts, and a linear device. This is a linear multi-step intermittent feed device in which work steps are laid out and arranged in a plurality of steps in a predetermined direction, and the workpiece 2 or a conveyed object 2 such as a jig is transferred to each work step.

Further, the main body 1 of the transfer device is provided with an object 2 to be transferred.
Is provided with a pair of shooters 3a, 3b having an elongated rectangular shape as a work surface portion that transports the sheet from a transport start end that is one end in the longitudinal direction to a transport end that is the other end in the longitudinal direction. The upper surface of each of the shooters 3a and 3b is a transport surface 4 which is a work surface as a transport path.
Is installed in a horizontal position. The transported object 2 is installed on the transport surface 4, and the transported object 2 is transported in the transport direction C which is the longitudinal direction of the transport surface 4.

Further, the transfer surface 4 of the shooters 3a, 3b.
Are spaced apart from each other in the width direction so that their longitudinal directions are parallel to each other. In addition, these shooters
3a, 3b are installed in a state in which the transfer start end of one shooter 3a is close to the transfer end of the other shooter 3b, and the transfer end of one shooter 3a is close to the transfer start end of the other shooter 3b. .

Then, between the conveyance start end of one shooter 3a and the conveyance end end of the other shooter 3b, the object 2 conveyed to the conveyance start end of the other shooter 3b is conveyed by one shooter 3a. A folding unit 5a is attached as a conveying means for conveying the sheet to the starting end. Similarly, between the transport start end of the other shooter 3b and the transport end end of the one shooter 3a, the transported object 2 transported to the transport start end of the one shooter 3a is transferred to the other shooter 3b. A folding unit 5b is attached as a transporting means for transporting to.

Each of the folding units 5a and 5b includes a transport surface 4 of one shooter 3a and the other shooter 3a.
These shooters are flush with each of the transport surfaces 4 of 3b.
A transport surface 6 having a transport direction D orthogonal to the transport direction C of 3a and 3b is provided. And these folding units 5
On each of the transport surfaces 6 a and 5 b, there is a transport lever 7 that pushes the rear side of the transported object 2 placed on the transport surface 6 to transport the transported object 2 from the transport start end to the transport end. It is installed. The transport lever 7 moves from the transport start end to the transport end on the transport surface 6 by an air cylinder (not shown).

On the other hand, on both sides of the shooter 3a, 3b which are transported on the transport surface 4 orthogonal to the transport direction C, the shooter 3a, 3b has a width direction from the transport surface 4 of the shooter 3a, 3b. Positioning stoppers 8a and 8b are attached as stopper bodies that protrude laterally along the direction. The tip ends of the positioning stoppers 8a and 8b are bent and protrude downward from the lower end surfaces of the shooters 3a and 3b. Further, on the outer side surfaces of the positioning stoppers 8a and 8b, holding recesses 9 each having a groove shape along the vertical direction are formed.

Further, in the outer regions in the width direction of the shooters 3a and 3b, the objects 2 to be conveyed which are conveyed along the conveying direction C of the conveying surfaces 4 of the shooters 3a and 3b are arranged on the conveying surfaces 4. A plurality of positioning and holding mechanisms 11 as holding means for positioning and holding at a work process position as a predetermined position are respectively installed. These positioning and holding mechanisms 11 are installed at positions separated along the transport direction C of the shooters 3a, 3b in accordance with the work process time of the positioning and holding mechanisms 11. Further, these positioning and holding mechanisms 11 are detachable, that is, engageable and disengageable with the holding recesses 9 of the positioning stoppers 8a and 8b of the transported object 2 transported along the transport surface 4 of the shooters 3a and 3b. It has a dowel pin 12.

Specifically, these positioning and holding mechanisms 11 are
When the transported object 2 transported along the transport surface 4 of the shooters 3a, 3b approaches, the engaging pin 12 is projected so that the engaging pin 12 engages with the holding recess 9 of the positioning stoppers 8a, 8b. When the two sides of the conveyed object 2 orthogonal to the conveying direction C are sandwiched, the conveyed object 2 is held by the conveying surfaces 4 of the shooters 3a, 3b.
Positioned and held at the work process position in.

Below the shooters 3a and 3b, as shown in FIG. 2, a belt conveyor 15 as a conveying means is installed. These belt conveyors 15
Is a conveyor belt 16 which is an endless belt body in which the forward path surface moves along the carrying direction C on the carrying surface 4 of each shooter 3a, 3b, and the backward path surface moves in the direction opposite to the carrying direction C. Is equipped with.

The conveyor belt 16 is rotatably arranged along the carrying direction C on the carrying surface 4 of the shooters 3a, 3b at the carrying starting end and the carrying ending end of the shooters 3a, 3b. It is attached in a state of being rotatably stretched between a pair of drive rollers (not shown). Further, the conveyor belt 16 is driven by the rotation of a drive roller by a drive source which is a general-purpose motor (not shown) such as an induction motor. Here, the conveyor belt 16 continues to rotate in a constant state regardless of whether or not the positioning pins 8a and 8b attached to the transported object 2 are held by the engagement pins 12 of the positioning and holding mechanism 11.

Further, on the outer peripheral surface of these conveyor belts 16, a jig carrying hook which is a hook body as an engaging body,
That is, a plurality of engagement hooks 21 are attached. As shown in FIG. 3, the plurality of engagement hooks 21 are formed in a substantially L-shaped cross section, and are provided at positions spaced at equal intervals along the longitudinal direction of the conveyor belt 16. Therefore, these engagement hooks 21 move along the transport surface 4 of each shooter 3a, 3b. In addition, these engagement hooks 21,
When moving along the transport surface 4 of the shooters 3a, 3b with the rotation of the conveyor belt 16, the positioning stoppers 8a, 8b of the transported object 2 installed on the transport surface 4 are caught and engaged, This conveyed object 2 is conveyed in the conveying direction C on the conveying surface 4.
To be transported to.

Further, each of the plurality of engaging hooks 21 is provided with a substantially rectangular flat plate-shaped bottom plate portion 22 which is in contact with and connected to the outer surface of the conveyor belt 16. A connecting piece portion 23 that projects perpendicularly to the surface direction of the bottom plate portion 22 is integrally formed at one side edge of the bottom plate portion 22 on the conveyor direction C side of the conveyor belt 16. An engaging piece portion 24 having a surface direction along the projecting direction of the connecting piece portion 23 is rotatably supported by a shaft body 25 so that the connecting piece portion 23 can be bent. It is installed. This engaging piece 24
Is rotatable in a direction opposite to the driving direction of the conveyor belt 16 from a state in which the plane direction is orthogonal to the plane direction of the bottom plate portion 22.

Further, an elongated cylindrical roller body 26 rotatable along the rotation direction of the conveyor belt 16 is attached to the tip of the engaging piece 24. This roller body 26
Is detachably engaged with the positioning stoppers 8a, 8b engaged with the transported object 2 on the transport surface 4 of the shooters 3a, 3b, and transports the transported object 2 as the conveyor belt 16 is rotationally driven. Carry in the direction C. Further, the roller body 26 facilitates the release of the engagement of the roller body 26 with the positioning stoppers 8a and 8b.

Further, in the inner corner portion 27 formed by the base end side of the connecting piece portion 23 and the upper side surface of the bottom plate portion 22, both ends 32 of the spring portion 31 spirally wound are orthogonal to each other. Spring 33, which is a coil spring as an urging means protruding toward
Is attached. One end of the spring 33 is in contact with the upper side surface of the bottom plate portion 22, and the other end is in contact with the inner side surface of the engaging piece portion 24 via the base end side of the connecting piece portion 23. Therefore, the spring 33 is arranged in the conveying direction C by the engaging piece portion 24.
By a certain amount of load in the direction opposite to the above direction, the engaging piece portion 24 is urged so as to escape in the direction opposite to the transport direction C, that is, bendable.

Here, the spring 33 bends the engaging piece portion 24 by a predetermined external force in the direction opposite to the rotation direction of the conveyor belt 16, and moves the engaging piece portion 24 to the positioning stoppers 8a, 8b. Disengage the. Specifically,
When the engaging pin 12 of the positioning holding mechanism 11 is engaged with the holding concave portion 9 of the positioning stoppers 8a, 8b of the conveyed object 2 conveyed on the conveying surface 4 of the shooters 3a, 3b, the spring 33 is The engagement piece portion 24 of each engagement hook 21 is rotated against the elastic force of the spring 28, and the engagement of the engagement piece portion 24 with the positioning stoppers 8a and 8b is released.

Next, a carrying method by the carrying device of the above-described embodiment will be described.

First, the conveyor belts 16 of the belt conveyors 15 located below the shooters 3a and 3b are continuously driven to rotate in the carrying direction C on the carrying surface 4 of the shooters 3a and 3b.

In this state, the transfer surface 4 of one shooter 3a
The belt conveyer 1 is attached to the positioning stoppers 8a and 8b attached to both sides of the object to be conveyed 2 that has been conveyed to the upper conveyance start end.
The engaging piece portion 24 of the engaging hook 21 of any one of 5 is engaged.

At this time, the rotation of the conveyor belt 16 of the conveyor belt 15 causes the engagement piece portion 24 of the engagement hook 21 to rotate.
Pushes the transported object 2 via the positioning stoppers 8a and 8b, and transports the transported object 2 along the transport surface 4 to the transport end.

When the object 2 is carried to the work process position on the carrying surface 4 of the one shooter 3a, the positioning and holding mechanism 11 installed at this work process position.
The engaging pin 12 is projected so that the engaging pin 12 is engaged with the holding recesses 9 of the positioning stoppers 8a and 8b of the transported object 2.

At this time, by the engagement pins 12 engaging the positioning stoppers 8a, 8b of the article 2 to be held in the holding recesses 9, the article 2 is held at the work step position on the conveyance surface 4.

Then, the engaging pin 12 of the positioning and holding mechanism 11
By the engagement of the positioning stoppers 8a, 8b of the transported object 2 with the holding recesses 9 by the above, the engaging pieces of the engaging hooks 21 engaged with the positioning stoppers 8a, 8b are resisted against the elastic force of the spring 33. 24 is bent in the direction opposite to the conveying direction C, and the engagement piece portion 24 of the engagement hook 21 disengages from the positioning stoppers 8a and 8b.

Therefore, as the conveyor belt 16 is driven to rotate, the engagement of the engaging piece portion 24 of the engaging hook 21 with the positioning stoppers 8a, 8b of the conveyed object 2 is sequentially released. The object 2 will be held in the working process position.

After that, at the work step position, a work such as loading, unloading or processing is performed on the transported object 2, and when the work in this work step is completed, the positioning holding mechanism 11 is engaged. The engagement of the positioning stoppers 8a, 8b of the transported object 2 with the holding recess 9 by the pin 12 is released.

Then, due to the engagement piece 24 of the engaging hook 21 engaging with the positioning stoppers 8a, 8b of the conveyed object 2, the conveyed object 2 is rotated with the rotation of the conveyor belt 16 of the belt conveyor 15. Is transported to the next work process position along the transport direction C on the transport surface 4 of the one shooter 3a. By repeating this operation, the transported object 2 can perform a plurality of work processes laid out in a linear direction. Sequentially transported.

The transfer surface 4 of the one shooter 3a
The transported object 2 transported to the transport end of the transport unit 6 is transported to the transport start end of the transport surface 6 of the one folding unit 5a, and then pushed by the transport lever 7 of the folding unit 5a. Is conveyed to the end of the conveyance.

Further, the object 2 transported to the transport end of the transport surface 6 is transported to the transport start end of the transport surface 4 of the other shooter 3b and then positioned below the other shooter 3b. One of the engaging hooks 21 of the belt conveyor 15 engages with the positioning stoppers 8a and 8b of the transported object 2 to transport the transported object 2 to the transport end of the transport surface 4 of the other shooter 3b. .

The object 4 to be conveyed is the other shooter.
When it is transported to the work process position on the transport surface 4 of 3b, the positioning and holding mechanism installed at this work process position
Due to the protrusion of the engaging pin 12 of 11, the engaging pin 12 engages with the holding recesses 9 of the positioning stoppers 8a and 8b of the transferred object 2 to transfer the transferred object 2 to the transfer surface 4 of the other shooter 3b. At the work process position.

After this, the object to be conveyed 2 at this work step position
When the work of (1) is completed, the engagement pins 12 of the positioning and holding mechanism 11 disengage the positioning stoppers 8a, 8b of the transported object 2 from the holding recesses 9, and the transported object 2 is transferred to the other shooter. It is transported to the transport end of the transport surface 4 of 3b.

The transfer surface 4 of the other shooter 3b
The transported object 2 that has been transported to the transport end of is transported to the transport start end of the transport surface 6 of the other folding unit 5b, and is pushed by the transport lever 7 of this folding unit 5b to move the folding unit 5b. After being transported to the transport end of the transport surface 6, the transport surface 4 of one shooter 3a
Is transported to the transport start end.

As described above, according to the above-described embodiment, the transferred object 2 transferred to the transfer start end on the transfer surface 4 of each shooter 3a, 3b is positioned on both sides of the transferred object 2. The engaging pieces 24 of the engaging hooks 21 of the belt conveyor 15 engage with the stoppers 8a and 8b. Then, due to the movement of the engaging hooks 21 due to the rotational driving of the belt conveyor 15 by the conveyor belt 16, the object to be conveyed 2 is pushed by the engaging piece portions 24 of the engaging hooks 21, and the objects to be conveyed are 2 is transported to the transport end of the transport surface 4 of the shooters 3a, 3b. For this reason, the conveyor belt of this belt conveyor 15
By rotating 16 at high speed, each shooter 3a, 3a
The transferred object 2 on the transfer surface 4 of b can be transferred from the transfer start end to the transfer end at high speed.

Also, the engaging hooks of the belt conveyor 15
The positioning stoppers 8a, 8b are pushed by the engaging pieces 24 of the positioning stoppers 8a, 8b of the to-be-conveyed object 2 being conveyed on the conveying surface 4 of the shooters 3a, 3b. The object to be conveyed 2 is held by engaging the engaging pin 12 of 11 and the engaging hook 21 engages the positioning stoppers 8a and 8b of the object to be conveyed 2 with the engaging piece of the engaging hook 21. By bending the part 24 against the elastic force of the spring 33 to release it, the transferred object 2 is transferred to the transfer surface 4 of the shooters 3a, 3b.
It can be positioned and held at any work process position in.

For this reason, the engagement pin of the positioning and holding mechanism 11 is kept in a state in which the rotational drive of the conveyor belt 16 of the belt conveyor 15 is continued without being stopped or reduced in speed.
By accurately engaging the positioning stoppers 8a, 8b of the transferred object 2 with the holding recesses 9 by 12, the shooters 3a, 3b of the transferred object 2 can be moved at any work process position on the transfer surface 4. Highly accurate positioning is possible.

Further, the engagement pin 12 of the positioning and holding mechanism 11
By releasing the engagement of the positioning stoppers 8a, 8b of the transported object 2 with the holding recesses 9 by the engaging hooks 21 engage with the positioning stoppers 8a, 8b of the transported object 2, the transported objects 2 are transported. The object 2 can be conveyed again to the conveying end on the conveying surface 4 of the shooter 3a, 3b. Therefore, by appropriately adjusting the installation position of the positioning mechanism 11, even if the working time in each working process is different, each shooter 3a, without stopping or slowing the rotational drive of the conveyor belt 15, It is possible to absorb the length error of the working time in each working process on the transport surface 4 of 3b. For this reason, it is possible to flexibly deal with work processes for producing a plurality of products.

When the object 2 to be transferred on the transfer surface 4 of each shooter 3a, 3b is intermittently transferred, the belt conveyor 15
Since it is not necessary to stop or slow down the rotational drive of the conveyor belt 16, the motor for rotationally driving the conveyor belt 16 can be a relatively inexpensive general-purpose motor. Therefore, by rotating the conveyor belt 16 with a general-purpose motor such as this relatively inexpensive induction motor, the manufacturing cost of the belt conveyor 15 can be reduced.
The manufacturability of the carrier body 1 can be improved.

When the shooters 3a, 3b intermittently convey the object to be conveyed, the conveyor belt 16 of the belt conveyor 15
Since it is sufficient to constantly drive this conveyor belt 16 without stopping or slowing the rotational drive of
Even when the work time in each work process on the transport surface 4 of each shooter 3a, 3b is different, it is possible to prevent the occurrence of a work waiting state in each work process.

Therefore, by providing a plurality of steps having a long working time on the transfer surface 4 of each shooter 3a, 3b, it is possible to prevent the cycle time of each shooter 3a, 3b from depending on the step having a long working time. it can. Further, by simultaneously arranging the inspection process and the like on the transfer surface 4 of each of the shooters 3a and 3b, defective products of the transferred object 2 can be reprocessed, and the yield of the transferred object 2 can be improved. .

Furthermore, by constantly rotating the conveyor belt 16 of the belt conveyor 15, the shooters 3a, 3
It is possible to easily skip unnecessary work steps on the conveyance surface 4 of b. Therefore, by recognizing the type of the conveyed object 2 conveyed on the conveying surfaces 4 of the shooters 3a and 3b by the image recognition device or the type discrimination detection,
At the same time, a plurality of product types 2 can be produced.

Further, since the rotatable roller body 26 is attached to the tip of the engaging piece portion 24 of each engaging hook 21, the roller body 26 engages with the positioning stoppers 8a, 8b of the conveyed object 2, And this disengagement becomes smooth. Therefore, it is possible to reduce a collision when each of the engagement hooks 21 engages with the positioning stoppers 8a and 8b of the transported object 2 and a reaction when the engagement is released.

It should be noted that, in the above-mentioned one embodiment, the positioning stopper for the transported object 2 by the engaging piece portion 24 of each engaging hook 21.
Although the engagement with 8a, 8b is released by the elastic force of the spring portion 31 of the spring 33, it may be locked or unlocked by using a plunger pin or a magnet.

Further, the pair of shooters 3a, 3b are arranged in parallel, and the object 2 to be conveyed is placed between the pair of shooters 3a, 3b.
Although the transport lever 7 of the folding units 5a and 5b for transporting is transported by an air cylinder, it can be used in correspondence with a conveyor or a pick and place mechanism.

Further, although each engaging hook 21 is moved in the conveying direction C by the conveyor belt 16 of the belt conveyor 15, even if each engaging hook 21 is moved in the conveying direction C by a chain or the like. The same effects as those of the above-described embodiment can be obtained.

[0058]

According to the present invention, the object to be transferred can be positioned by releasing the engagement of the plurality of engaging bodies when the object to be transferred is held, so that the object to be transferred can be held with high accuracy. By this, since the transported object can be positioned with high accuracy, and the transported object can be transported by releasing the holding of the transported object, it is possible to absorb the error of the working time in each working process.

[Brief description of drawings]

FIG. 1 is a top view showing an embodiment of a carrying device of the present invention.

FIG. 2 is a side view showing the same carrier device.

FIG. 3 is an enlarged side view showing an engagement body of the above-described transport device.

[Explanation of symbols]

2 Transported objects 4 Transport surface as transport path 8a, 8b Positioning stopper as stopper body 11 Positioning and holding mechanism as holding means 16 Conveyor belt as a belt body 21 Engagement hook as an engagement body 33 Spring as biasing means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tsuyoshi Ihara             8 East Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa             Shiba Electronics Engineering Co., Ltd. F-term (reference) 3C030 DA02 DA04 DA09 DA14 DA21                       DA22 DA28 DA33 DA34 DA38                 3F013 AA01 AA02 AA05 AA08 AA17                       AC01 AD02 AD09 AD16 AE04                       AF01 BB02 BB08 BB19                 3F017 EA01 FA03 FA05 FB01 FE01                       FE07 FG01

Claims (9)

[Claims] 1. When transporting an object to be conveyed along a conveying path, a plurality of engaging bodies that move away from each other along the conveying path are engaged with the object to be conveyed, and the object to be conveyed is stopped. When carrying out, the carrying method is characterized in that the carried object is held and the engagement by the plurality of engaging bodies is released. 2. The transport method according to claim 1, wherein the plurality of engaging bodies are moved by a belt body that moves along the transport path. 3. A transport path for transporting an object to be transported, and moving along the transport path so as to be spaced apart from each other, and removably engaged with the object to be transported along the transport path. A transporting device, comprising: a plurality of engaging bodies to be transported by means of a plurality of engaging bodies; and holding means for holding a transported object transported by engagement by these engaging bodies. 4. The transfer device according to claim 3, wherein the engagement body continues to move in a constant state regardless of whether or not the object to be transferred is held by the holding means. 5. The conveyor according to claim 3, further comprising a belt body provided with a plurality of engaging bodies which are spaced apart from each other along a conveying direction of the conveying path and which moves along the conveying path. apparatus. 6. The conveying device according to claim 3, further comprising a stopper body that holds the object to be conveyed and engages a plurality of engaging bodies in a disengageable manner. 7. The conveying device according to claim 3, wherein the engagement body is disengaged from the stopper body by a predetermined external force in a direction opposite to the moving direction of the belt body. . 8. The conveying device according to claim 3, further comprising a biasing unit that biases the engagement body so as to be bendable in the moving direction of the belt body. 9. The transfer device according to claim 3, wherein the holding means holds both sides of the object to be transferred on the transfer path, the both sides being orthogonal to the transfer direction.