JP2000198523A - Attachment for conveyor chain having screw function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate clearance on a connecting part of an attachment and a member with a screw part by forming a hole on the attachment for a conveyor chain, and pressing and mounting the member with the screw part to the attachment for the conveyor chain. SOLUTION: An attachment 10 for a conveyor chain is formed by vertically folding an attachment piece 11A from a plate 11, and forming two holes 11B on the attachment piece 11A. A screw hole 12A of a projection weld nut 12 having projections 12B for welding at four corners of the hole 11B and the hole 11B formed on the attachment piece 11A are aligned by a jig, the heat for welding is concentrated on the projections 12B for welding of the projection weld nut 12 so that they are brought into press contact with one another by heating and softening. Accordingly, a clearance is not generated on a connecting part between the attachment piece 11A and the projection weld nut 12 comprising the screw hole 12A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a conveyor chain attachment having a screw function.

[0002]

2. Description of the Related Art Conventionally, as an example of an attachment for a conveyor chain having a screw function, there is an A attachment for a conveyor chain in which a general-purpose nut (hex nut) is welded. FIG. 5 (a) is a front view of a conventional conveyor chain A attachment to which a general-purpose nut is welded.
(B) is a plan view thereof. In the conveyor chain A attachment 110 shown in FIGS. 5 (a) and 5 (b), a mounting piece 111A projects vertically from the plate 111, and the mounting piece 111A has two holes 111B. The general-purpose nut 112 is joined to each of the holes 111B by welding. At the time of this welding, the screw hole 112A and the hole 111B of the universal nut 112 are used.
Are aligned using a jig (the screw hole 112A and the hole 111B are aligned with a pin), and welding is performed using a welding member. Thus, the hole 111B and the universal nut 112
Are joined by welding, the welding member may enter the gap between the hole 111B and the general-purpose nut 112,
It is difficult to make the screw hole 112A of the general-purpose nut 112 perpendicular to the hole 111B, and the center axis of the screw hole 112A of the general-purpose nut 112 may not match the center axis of the hole 111B. Nut 112
Accuracy of the screw hole 112A may decrease. When such a phenomenon occurs, the attachment 110
When attaching slats or pins to a vehicle, there is a problem in that fastening bolts are hindered.

FIG. 6 (a) is a front view of a conveyor chain incorporating the conventional conveyor chain A attachment to which the conventional general-purpose nut shown in FIGS. 5 (a) and 5 (b) is welded, and FIG. 6 (b). Is a plan view thereof. As shown in FIGS. 6A and 6B, the attachment 110 is assembled with an inner plate 120, an outer plate 121, a C pin 122, an F roller 123, and a T pin 124 to form a conveyor chain. It is. By the way, since the attachment of the slats and the pins to the attachment 110 is performed after the conveyor chain is completed by incorporating the attachment 110, as described above,
When the fastening of the mounting bolts is hindered, the conveyor chain must be replaced, which causes a problem of hindering the operation of the conveyor.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention solves the above-mentioned conventional problems and has no gap in the joint between the attachment and the member provided with the thread, and the thread is perpendicular to the attachment. An object of the present invention is to provide an attachment for a conveyor chain, which is provided and can substantially eliminate the influence of heat on both the attachment and the screw portion.

[0005]

In order to achieve the above object, a conveyor chain attachment having a screw function according to the present invention is provided with a hole in the conveyor chain attachment, and a center axis of the hole and a center axis of a screw portion. And a member provided with a threaded portion is attached to the conveyor chain attachment by press-contact so that

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The conveyor chain attachment having a screw function according to the present invention is provided with a hole in the conveyor chain attachment so that the center axis of the hole coincides with the center axis of the screw section. Since the provided member is attached by pressing against the conveyor chain attachment, there is no gap at the joint between the attachment and the member provided with the screw portion, and the screw portion is attached vertically to the attachment. The effect of heat on the attachment and the thread can be almost eliminated. The form of the pressure welding includes projection welding, spot welding, press fitting, adhesion, and the like.

[0007]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1A is a front view of an A attachment according to an embodiment of the present invention, and FIG. 1B is a plan view thereof. FIG.
(A) is a front view of a conveyor chain incorporating the A attachment according to the embodiment of the present invention shown in FIGS. 1 (a) and 1 (b), and FIG. 2 (b) is a plan view thereof. FIG.
1A is a perspective view of a projection welding nut used for an A attachment according to an embodiment of the present invention shown in FIGS. 1A and 1B. FIG. In the A attachment 10 for a conveyor chain shown in FIGS. 1 (a) and 1 (b), a mounting piece 11A is bent vertically from a plate 11, and two holes 11B are provided in the mounting piece 11A. FIG. 4 (a) shows the respective portions of the hole 11B.
Projection welding nuts 12 having projections 12B for welding at the four corners shown in FIG. The pressure welding by this projection welding
The screw hole 12A of the projection welding nut 12 and the hole 11B provided in the mounting piece 11A are aligned with a jig (the screw hole 12A and the hole 11B are aligned with a pin), and the projection for welding the projection welding nut 12 is formed. 1
The welding heat is concentrated on 2B to soften it by heating and press-contact. Therefore, when pressed by this projection welding, no gap is formed at the joint between the mounting piece 11A and the projection welding nut 12 having the screw hole 12A, and the screw hole 1 is perpendicular to the mounting piece 11A.
2A is attached. Furthermore, since only the welding projection 12B is heated, the screw hole 12A and the mounting piece 11A are not adversely affected by heat. As a result, there is no problem in fastening the mounting bolt.

FIG. 2 (a) is a front view of a conveyor chain incorporating the conveyor chain A attachment according to the embodiment of the present invention shown in FIGS. 1 (a) and 1 (b).
FIG. 2B is a plan view thereof. FIG. 2 (a), FIG.
As shown in (b), the attachment 10 includes an inner plate 20, an outer plate 21, a C pin 22, an F roller 23,
It is assembled together with the T-pin 24 to form a conveyor chain. By the way, attachment of a slat, a pin, or the like to the attachment 10
Is carried out after the conveyor chain is completed by incorporating the mounting bolts. However, the fastening of the mounting bolts to the screw holes 12A can be performed without any trouble, so that the operation of the conveyor is not hindered.

Another embodiment of the present invention will be described with reference to the drawings. FIG. 3A is a front view of an A attachment according to another embodiment of the present invention, FIG. 3B is a plan view thereof, and FIG.
FIG. 6 is a perspective view of a projection welding bolt used for an A attachment according to another embodiment of the present invention shown in FIGS. 3 (a) and 3 (b). In the conveyor chain A attachment 15 shown in FIGS. 3A and 3B, the mounting piece 16A is bent vertically from the plate 16;
The mounting piece 16A is provided with holes 16B at two places, and each of the holes 16B has a projection welding bolt 17 having a projection 17B for welding at each of four corners of a head 17A shown in FIG. 4B. The portion 17C is inserted and pressed by projection welding. Press-fitting by the projection welding is performed by inserting the external thread portion 17C of the projection welding bolt 17 into the hole 16B, bringing the projection 17B for welding into contact with the mounting piece 16A, and forming the projection 1 for welding.
The welding heat is concentrated on 7B to soften it by heating and press-contact. Therefore, when pressed by this projection welding, there is no gap at the joint between the mounting piece 16A and the head 17A of the projection welding bolt 17, and the projection welding bolt 17 is mounted perpendicular to the mounting piece 16A. Further, since only the welding projection 17B is heated, the external thread 17C and the mounting piece 16A are not adversely affected by heat. As a result, there is no hindrance to fastening by the projection welding bolt 17.

The attachment of the slats and the like to the attachment 15 is performed after the conveyor chain is completed by incorporating the attachment 15. However, the fastening of the conveyor by the projection welding bolts 17 is not hindered. There is no hindrance to operation.

In each of the above embodiments, pressure welding is performed by projection welding. However, pressure welding may be performed by spot welding, press-fitting, bonding, or the like, and the same effect as that by projection welding can be obtained.

Further, in each of the embodiments described above, the A attachment is described, but the same effect can be obtained with the G attachment and other types of attachments.

[0013]

According to the conveyor chain attachment having a screw function of the present invention, no gap is formed at the joint between the attachment and the member having the thread portion.
A thread is provided vertically to the attachment. Further, the influence of heat on the attachment and the screw portion can be almost eliminated.

[Brief description of the drawings]

FIG. 1 (a) is a front view of a conveyor chain A attachment obtained by projection welding a projection welding nut according to an embodiment of the present invention.
(B) is a plan view thereof.

FIG. 2 (a) is a front view of a conveyor chain incorporating the conveyor chain A attachment according to the embodiment of the present invention shown in FIGS. 1 (a) and 1 (b), and FIG. ) Is its plan view.

FIG. 3A is a front view of a conveyor chain A attachment according to another embodiment of the present invention in which projection welding bolts are projection-welded, and FIG. 3B is a plan view thereof.

FIG. 4 (a) is a perspective view of a projection welding nut used for the A attachment for the conveyor chain according to the embodiment of the present invention shown in FIGS. 1 (a) and 1 (b). FIG. 4B is a perspective view of a projection welding bolt used for the A attachment for the conveyor chain according to another embodiment of the present invention shown in FIGS. 3A and 3B.

FIG. 5 (a) is a front view of a conventional conveyor chain A attachment to which a conventional general-purpose nut is welded, and FIG. 5 (b) is a plan view thereof.

6 (a) is a front view of a conveyor chain incorporating the conventional conveyor chain A attachment to which the conventional general-purpose nut shown in FIGS. 5 (a) and 5 (b) is welded, and FIG. ) Is its plan view.

[Explanation of symbols]

10: Conveyor chain A attachment 11: Plate 11A: Mounting piece 11B: Hole 12: Projection welding nut 12A: Screw hole 12B: Projection 15: Conveyor chain A attachment 16: Plate 16A: Mounting piece 16B: Hole 17: Projection welding Bolt 17A: Head 17B: Projection 17C: Male thread 20: Inner plate 21: Outer plate 22: C pin 23: F roller 24: T pin 110: Conveyor chain A attachment 111: Plate 111A: Mounting piece 111B: Hole 112: General-purpose nut (hex nut) 112A: Screw hole 120: Inner plate 121: Outer plate 122: C pin 123: F roller 124: T pin

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shuji Omori 4-17-96, Tsurumi-ku, Tsurumi-ku, Osaka-shi, Osaka Inside Tsubakimoto Chain Co., Ltd. (72) Satoshi Kuriyama 4--17, Tsurumi, Tsurumi-ku, Osaka-shi, Osaka No. 96 Tsubakimoto Chain Co., Ltd.

Claims (1)

[Claims] 1. A conveyor chain attachment having a screw function in which a hole is provided in a conveyor chain attachment and a member having a screw portion is attached to the hole, wherein a center axis of the hole and a center axis of the screw portion are provided. A conveyor chain attachment having a screw function, characterized in that the member provided with the threaded portion is pressed against the conveyor chain attachment so as to match.