JPH041132Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a conveyor chain structure, and more specifically, to a conveyor chain structure configured to prevent the chain from bending in the middle or low direction due to the weight of conveyed objects. It is.

[Conventional technology]

Conventionally, in this type of structure, a pair of left and right outer pin link plates and a pair of left and right inner roller link plates are alternately connected with pins to form a chain, and the opposite side of the inner roller link plate is connected alternately with pins. The edges are configured so that both link plates abut each other in a linearly connected state, and the weight of the conveyed object is received by the contact action of the two contact surfaces, so that it does not bend depending on the weight of the conveyed object. In addition, there are some that are configured to bend in the opposite direction.

[The problem that the idea attempts to solve]

However, in this conventional structure, the weight is supported by the opposite edge of the roller link plate to prevent bending, so contact noise occurs as the chain moves, especially when transitioning from a bent state to a straight state. This caused problems in terms of manufacturing and assembly.

Also, Special Publication No. 55-42003, Utility Model Publication No. 56-
No. 162211 is known, but this conventional structure has disadvantages in terms of stable conveyance of conveyed objects, miniaturization of the device, and improvement in the size that can be conveyed.

[Means to solve the problem]

The present invention attempts to provide a conveyor chain structure that can eliminate these disadvantages.

The gist of the present invention will be explained below with reference to the accompanying drawings. In a chain 4 in which a pair of left and right outer pin link plates 1 and a pair of left and right inner roller link plates 2 are alternately connected by pins 3, each of the outer pin link plates 1 is formed to protrude toward the load side and is transported. Slat frame 2 on which the object 14 is placed
A mounting portion 18 is formed on which the pin link plate 1 can be attached in a protruding state to the outside of the chain, and a no-back bend pin (chain backlash prevention pin) 6 is fixedly installed between the protruding portions 5 of the pin link plate 1. Each of the roller link plates 2 is formed into a concave shape from the front, and a convex portion 7 is provided on the opposite edge to protrude toward the load side.
A relief recess 26 is formed in the middle portion to accommodate the side portion of the slat frame 21, and a straight line between the link plates 1 and 2 is formed at the opposite edge of the convex portion 7 to the no-back bend pin 6. This is a conveyor chain structure characterized by forming a notched groove 17 that can be abutted in a connected state.

〔Example〕

Further, one embodiment of the present invention shown in the accompanying drawings will be specifically described.

As shown in FIG. 5, the chain 4 of this embodiment is a vertical transport conveyor, and has a feed frame 9 disposed on the lower side of the main body frame 8, and an upper opposite side 10.
An outer chain 12 and an inner chain 13 are disposed in circulation on the main body frame 8 along a predetermined route on both the left and right sides, one end of the chain 4 is connected to the outer chain 12, and the inner chain is connected to the outer chain 12. 1
3, the other end is connected to both chains 12, 1.
The conveyed object 14 is vertically conveyed in a suspended state by the traveling of No. 3, and after being conveyed, it is bent and travels back.

Further, in this embodiment, the pin link plate 1 is formed into an inverted T-shaped plate from the front as shown in FIG. , are alternately connected by bushes 16, and the no-back bend pins 6 are fixedly installed between the protrusions 5 by press-fitting into the left and right pin link plates 1, and the protrusions 7 on the opposite side edges of the roller link plate 2. Half-moon-shaped cutout grooves 17 are formed in each of the pin link plates 1 to fit into the no-back bend pins 6, and a mounting portion 18 is formed by bending the upper edge of the pin link plate 1.

Two of these chains 4 are arranged in parallel on the left and right, and a plurality of slat frames 21 each having a shape of bolts 19 and nuts 20 are constructed by each mounting portion 18 to form a mounting body 22.

Further, a mounting pipe 23 is attached to each end of the chain 4 with a bolt 24, and each of the mounting pipes 2
3 is connected to the inner chain 13 or the outer chain 12.

Reference numeral 25 is a guide roller made of resin.

Since the present embodiment has the above-mentioned configuration, when the conveyed object 14 rises vertically as shown in FIG. 1
Due to the weight of the roller link plate 2, the middle part is bent and a load is applied to bend the middle part, but as shown in the horizontal part of FIG. The groove 17 abuts on the no-back bend pin 6, preventing downward bending and allowing vertical conveyance in a substantially horizontal state.

Further, when the conveyed object 14 is sent to the take-out frame 11 and then returns, it is guided by guide rollers 25 as shown in the bent portion in FIG. 2, and can be bent while returning.

Further, each of the outer pin link plates 1 is formed as an inverted T-shaped plate from the front, and each of the inner roller link plates 2 is formed into a concave shape from the front. Compared to when a square pipe is installed when the slat frame 21 can be installed and there is no escape recess 26,
The height of the mounting body 22 can be lowered, the outer diameter of the detour of the chain 4 can be reduced at the sprocket portion, the delivery and transportation of small items can be made smooth, stable transportation is possible, the size can be reduced, and the slat frame 21 can be The slat frame 21 can be installed protruding from the outside of the chain 4 in a state where it is supported on both sides, which can expand the transportable size of the conveyed object 14, prevent twisting of the chain 4, and reduce wear on the link sliding parts. Chain 4
It can prevent foreign objects from getting caught in the

In addition, a half-moon-shaped notch groove 17 is formed in the convex portion 7 on the opposite edge of the roller link plate 2, so that the contact surface pressure due to the weight of the conveyed object 14 is reduced. can.

Furthermore, since the no-back bend pin 6 is press-fitted into the pin link plate 1, the hole can be made to have the same diameter as the pin 3, and the pin link plate 1 can be manufactured easily.

[Effect of idea]

As described above, the present invention is a chain in which a pair of left and right outer pin link plates and a pair of left and right inner roller link plates are alternately connected by pins, and each of the outer pin link plates is formed to protrude toward the load side. A mounting part is formed on which the slat frame on which the conveyed object is placed can be mounted in a protruding state to the outside of the chain, and a Norvac bend pin is fixedly installed between the protruding parts of this pin link plate, and the inner roller link plate is fixedly installed. Each of the slat frames is formed into a concave shape in front, and a convex portion protruding toward the load side is formed on the opposite side edge, and a recessed portion capable of receiving the side portion of the slat frame is formed in the middle portion, and the opposite side edge of the convex portion is formed. Since a cutout groove is formed in the part of the no-back bend pin so that it can come into contact with the link plates in a linearly connected state, even if the weight of the conveyed object is applied and the chain tries to bend, the cutout groove of the convex part is formed. contacts the Novak Bend pin, receives this load, and reliably prevents the chain from bending and bending.Also, since the opposing edges do not contact each other over the entire surface, noise generation can be prevented, and the notched groove The contact surface pressure can be reduced by this.

In addition, each of the inner roller link plates has a concave shape from the front, and a convex portion protruding toward the load side on the opposite side edge and a relief recess that can receive the side portion of the slat frame, making it easy to attach the pin link plate. The slat frame can be mounted low in the sprocket part, and the outer diameter of the chain detour can be reduced in the sprocket part.
Smooth delivery and transportation of small items, stable transportation, miniaturization, and the ability to protrude the slat frame from both sides of the chain, expanding the size of objects that can be transported and preventing twisting of the chain. This can reduce wear on the link sliding parts, and by installing the slat frame in a protruding manner to the outside of the chain, it is possible to prevent foreign matter from getting caught in the chain.

As described above, the intended purpose can be fully achieved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is an exploded perspective view of the main parts, Fig. 2 is a front view of the main parts, Fig. 3 is a partial plan view, and Fig. 4 is a partial side sectional view. , 5th
The figure is an overall plan view of the device in use. 1...Pin link plate, 2...Roller link plate, 3...Pin, 4...Chain, 5...
...Protrusion, 6...Norback bend pin, 7...
Convex portion, 14...Conveyed object, 17...Notch groove, 18...
...Mounting portion, 21...Slat frame, 26...Escape recess.

Claims (1)

[Scope of utility model registration request] In a chain in which a pair of left and right outer pin link plates and a pair of left and right inner roller link plates are alternately connected by pins, each of the outer pin link plates is formed to protrude toward the load side to place a conveyed object. A mounting part is formed to which the slat frame can be mounted in a protruding state to the outside of the chain, and a Norvac bend pin is fixedly installed between the protruding parts of the pin link plate, and each of the inner roller link plates is formed into a concave shape from the front. A convex portion protruding toward the load side is formed on the opposite side edge, and a recessed portion capable of receiving the side portion of the slat frame is formed at the middle portion, and the no-back bend pin is formed on the opposite side edge of the convex portion. A conveyor chain structure characterized in that a notched groove is formed in the link plate so that the two link plates can come into contact with each other in a linearly connected state.