JPH0611942Y2 - Carrier - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a transfer device that transfers a product to a required position.

[Prior art]

2. Description of the Related Art Conventionally, it is generally known that a large number of synthetic resin chain constituent parts are rotatably connected to each other by shaft pins to form a conveyor belt in order to cope with various different conveying lengths.

[Problems to be solved by the device]

However, while the chain components are required to have wear resistance and impact resistance, they are required to have a low coefficient of friction in order to smoothly rotate each other according to the outer circumference of the sprocket when meshing with the sprocket. Has been done. For this reason, the chain constituent member is made of polyamide resin or the like having a low friction coefficient, but naturally the friction coefficient of the product mounting surface was also small. When the product is placed on such a conveyor belt and conveyed, the product is slippery on the belt surface,
There is a problem that the transportation posture is not constant. In particular, in the case of a carrier device that intermittently conveys a product by stopping at each of the carry-in position and the carry-out position, the product is moved on the carrier chain by the inertia force acting on the product when the carrier device is started or stopped. I slid over, and the mounting posture was not constant. When such a transport device is used for various automation devices, it is necessary to reliably detect the product placed on the transport belt surface at each stop position, and therefore the product mounting posture may be almost constant. Although required, there is a problem that the product cannot be taken out because the product attitude is unstable. That is, if the product is taken out by the hand device or the like in a state where the product posture is disturbed, the product may be pushed out by the hand device, and the product may not be taken out. The present invention was devised in order to solve the above-mentioned conventional drawbacks, and the purpose thereof is to be able to maintain the connected state of the chain constituent members for a long period of time and to check the posture of the product during transportation. Prevent turbulence,
An object of the present invention is to provide a carrier device capable of reliably carrying the product in a substantially constant posture.

[Means for solving problems]

For this reason, the present invention is mounted on shafts each having a shaft line in a direction orthogonal to the conveying direction, which is rotatably supported on the upper side and the lower side in the conveying direction of a pair of supporting frames facing each other with a required space. In a transport device in which a transport chain is stretched around the outer periphery of the sprocket so as to be bendable in the vertical direction and one of the sprockets is rotated by an electric motor to drive the transport chain, the transport chain is A boss having an outer diameter engageable with the teeth of the sprocket on one side in the transport direction, a through hole having an axis in the transport orthogonal direction at the center, and a boss having a large diameter portion at one end of the through hole, The boss of the through-hole that substantially matches the through-hole of the boss in one of the pair of shaft-supporting portions facing each other at a distance that substantially matches the axial length of the boss on the other side of the lower surface of the flat surface portion in the transport direction. A large number of chain constituent members having a small engaging portion on the inner peripheral surface and a through hole that substantially coincides with the through hole of the boss in the other shaft supporting portion are provided in the shaft supporting portion and the boss through hole located between them. Insert a fixed shaft having a large-diameter portion and an engaging concave portion to engage the engaging small-diameter portion of one shaft supporting portion with the engaging concave portion, and bring the engaging large-diameter portion into contact with one axial supporting portion. It is characterized in that a high friction member is attached to the upper surface of the flat portion while being connected.

[Function of the device]

Since the present invention is configured as described above, after the boss of the other chain constituent member is positioned between the bearing portions of the one chain constituent member, the fixed shaft is inserted into the through holes of the shaft support portion and the boss. And connect each other. At this time, as the fixed shaft is inserted, the small engagement portion of one shaft support becomes elastically deformable by the large diameter portion of the boss, gets over the engagement large diameter portion of the fixed shaft and engages with the engagement recess. At the same time, the engagement large-diameter portion is located inside the large-diameter portion of the boss and abuts against one of the shaft support portions. As a result, the chain constituent members are connected to each other in a state where the fixed shaft is pulled out and regulated. Then, after the product is placed on the carrier chain and the carrier chain travels in a predetermined direction by a sprocket that rotates with the driving of the electric motor, the product is carried to a predetermined position. At this time, since the high-friction member is attached to the plane portion of each chain constituent member of the transport chain, the coefficient of friction with the product is increased to prevent the product from being displaced during transport.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the outline of a carrier device, FIG. 2 is an exploded perspective view of a chain constituent member, and FIG. 3 is a longitudinal sectional view showing a connected state of the chain constituent member. Is a length corresponding to the required transport length, consisting of a pair,
Both of them are configured to be spaced apart from each other by a fixed bar 5. A guide groove 7 is provided on the upper surface of the support frame 3 for slidingly guiding a transport chain 21, which will be described later. A drive shaft 9 is provided at one end of the support frame 3.
However, the driven shaft 11 is rotatably supported at the other end. An electric motor 13 fixed to the side surface of the support frame 3 is connected to one side of the drive shaft 9 via a reduction mechanism 15. A sprocket 17 made of synthetic resin is fixed to each shaft end of the drive shaft 9 so as to substantially coincide with the guide groove 7. Similarly, a sprocket 19 made of synthetic resin is fixed to each shaft end of the driven shaft 11 so as to substantially coincide with the guide groove 7. It should be noted that a large number of teeth 17a
19a is formed so as to engage with a boss 29 described later. And the sprocket 17 and the sprocket 1
A carrier chain 21 is stretched between the carrier 9 and the carrier 9. The transport chain 21 is an endless type in which a large number of chain constituent members 23 are connected in the longitudinal direction and can be bent up and down by respective sprockets 17 and 19, and the chain constituent members 23 are wear resistant. It is made of nylon (trademark), polyacetal resin, or the like that has impact resistance and a low friction coefficient. A boss 29 having an axis in the direction orthogonal to the conveying direction is integrally formed on the lower surface of the plane portion 30 of each chain component member 23 on the lower side in the conveying direction with an outer diameter that can engage with the teeth 17a and 19a. The through hole 2 is formed at the center of the boss 29.
9a is formed. In addition, each chain constituent member 23
A pair of shaft supporting portions 25 and 27 are integrally formed on the lower surface of the flat surface portion 30 on the upstream side in the conveying direction with a space substantially matching the axial length of the boss 29. The large diameter portion 29b is formed in the through hole 29a of the boss 29.
Is formed on the side of one of the shaft supporting portions 25. In addition, each of the shaft support portions 25 and 27 has a through hole 2 having an axis in the direction orthogonal to the conveyance.
5a and 27a are formed, and the through hole 2 of the one shaft support portion 25 is formed.
A large-diameter portion 25b is formed in 5a and the boss 2
In the through hole 25a on the 9 side, an engagement small diameter portion 25c is formed with an inner diameter substantially matching a head portion 31a of a support shaft 31 described later. The engagement small-diameter portion 25c is formed in a taper shape whose diameter gradually decreases toward the boss 29 side. The chain constituent members 23 are mutually connected to one of the shaft supporting portions 25.2.
After inserting the other boss 29 between the 7 and 7, the shaft support 25
27, the support shaft 31 as a fixed shaft is inserted into the through holes 25a, 27a, 29a of the boss 29 so as to be rotatably connected. The support shaft 31 has a head portion 31a that coincides with the large diameter portion 25b, an engagement concave portion 31b that engages with the engagement small diameter portion 25c, an engagement large diameter portion 31c that coincides with the large diameter portion 29b, and the above. A shaft portion 31d, which corresponds to the through holes 29a and 27a, is integrally formed. When the support shaft 31 is inserted, the small engagement portion 25c with which the support shaft 31 abuts
Since the elastic deformation is made possible by the large diameter portion 29b of the boss 29, after the boss 29 gets over the large engagement portion 31c, it elastically returns to engage with the engagement recess 31b. Further, in this state, the engagement large-diameter portion 31c abuts on the inner side surface of the shaft support portion 25, more specifically, the inner side surface of the engagement small-diameter portion 25c, and engages the engagement small-diameter portion 25c with the engagement concave portion 31b as well as the support shaft. The escape of 31 is regulated. A high friction member 33 is attached to the upper surface of the flat portion 30. As the high friction member 33, a polyolefin-based thermoplastic elastomer, rubber or the like is suitable. As a method of attaching the high friction member 33, the high friction member 33 is integrally molded with the flat surface portion 30 of the chain component member 23, or an engaging hole is formed in the flat surface portion 30 and the engagement is performed. Any method of inserting and engaging the engaging portion provided on the lower surface of the high friction member 33 may be used. As described above, in the present embodiment, the pair of shaft support portions 25 and 27 and the through holes 25a, 27a and 29 of the boss 29 located between them.
When connecting the chain constituent members 23 by inserting the support shaft 31 into the inside of a, the large diameter portion 29b is inserted into the through hole 29a of the boss 29.
Since the engagement large diameter portion 31c is abutted, the engagement small diameter portion 25c is elastically deformed to engage with the engagement recess 31b and the engagement large diameter that has passed over the engagement small diameter portion 25c. By bringing the portion 31c into contact with the inner surface of the shaft support portion 25, the support shaft 31 can be prevented from coming out, and the chain constituent members 23 can be kept connected to each other for a long period of time. Further, since the high friction member 33 is provided on the upper surface of the flat portion 30, the coefficient of friction with the product is increased to prevent the product from sliding on the carrier chain 21 due to the intermittent drive of the carrier chain 21. can do. As a result, the product can be conveyed to a predetermined position in the carry-in posture.

[Effect of device]

For this reason, the present invention can maintain the connected state of the chain constituent members for a long period of time and prevent the posture of the product from being disturbed during the transportation, and can reliably transport the product in a substantially constant posture. It is possible to provide a different transport device.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outline of a carrying device, FIG. 2 is an exploded perspective view of a chain constituent member, and FIG. 3 is a longitudinal sectional view showing a connected state of the chain constituent member. In the figure, 1 is a conveying device, 3 is a support frame, 9 is a drive shaft which is one of the shafts, 11 is a driven shaft which is one of the shafts, 17 and 19
Is a sprocket, 21 is a transport chain, 23 is a chain constituent member, 25 and 27 are shaft supporting portions, 25a and 27a are through holes, 25c is an engaging small diameter portion, 29 is a boss, 29a is a through hole, 29b is a large diameter portion, 30 is a flat surface portion, 31 is a support shaft as a fixed shaft, 31b is an engaging concave portion, 31c is an engaging large diameter portion,
33 is a high friction member.

Claims (1)

[Scope of utility model registration request] 1. A pair of support frames facing each other at a required interval are rotatably supported on the upper side and the lower side in the transport direction, and are attached to shafts each having an axis in a direction orthogonal to the transport direction. A transport device in which a transport chain is stretched around the outer periphery of the sprocket so that it can be bent in the vertical direction and one of the sprockets is rotated by an electric motor to drive the transport chain. A boss having an outer diameter capable of engaging with the teeth of the sprocket on one side in the direction and an axis in the center in the direction orthogonal to the conveyance, and a boss having a large diameter portion at one end of the through hole; Of the pair of shaft support portions facing each other on the other side of the lower surface in the transport direction at intervals substantially matching the axial length of the boss, the inner circumference of the boss side of the through hole that substantially matches one of the through holes of the one boss. A large number of chain constituent members having a small engaging portion on the surface and a through hole on the other shaft supporting portion that substantially matches the through hole of the boss are installed inside the through hole of the boss located between the shaft supporting portion and both. A fixed shaft having a diameter portion and an engagement recess is inserted to engage the engagement small diameter portion of one shaft support portion with the engagement recess, and the engagement large diameter portion is brought into contact with one shaft support portion for connection. And a high-friction member is attached to the upper surface of the flat portion.