CN2474257Y

CN2474257Y - Reinforced bar straight thread roller head

Info

Publication number: CN2474257Y
Application number: CN 01238612
Authority: CN
Inventors: 胡炳义; 徐军民
Original assignee: RIXIN MACHINERY PLANT XISHAN CITY
Current assignee: RIXIN MACHINERY PLANT XISHAN CITY
Priority date: 2001-03-29
Filing date: 2001-03-29
Publication date: 2002-01-30
Anticipated expiration: 2011-03-29

Abstract

The utility model discloses a straight thread rolling dog of a reinforcement bar comprising a body, wherein the two surfaces of the body are respectively provided with a connecting ring and a flange. An adjacent surface between the body and the flange is provided with a longitudinal blind hole, a centre hole and a through-hole are relatively opened at the bottom of the longitudinal blind hole and on a cover board, and two ends of an eccentric shaft are fixed on the cover board and in the through-hole of the bottom of the longitudinal blind hole arranged on the body. The eccentric shaft is provided with rollers. An end portion that the eccentric shaft extends into the longitudinal blind hole is equipped with a gear engaged with internal tooth of a worm gear. A horizontal blind hole is disposed on an excircle of the body and an endless screw is installed inside the horizontal blind hole. The endless screw is engaged with a worm gear. The utility model has the advantages of simple structure, rapid adjustment speed, high work efficiency, easy locking and guaranteed manufacture quality. The utility model is used to process straight screws to head portions of reinforcement bars.

Description

The reinforced bar straight thread rolling head

The utility model relates to a kind of thread processing equipment.Specifically, be a kind of reinforced bar straight thread rolling head that is used for the reinforcing bar head is carried out screw thread processing.

Splice is adopted and to be threaded, and does not need welding equipment, and not only economize on electricity economizes material, and easy to operate, be convenient to all-weather construction, also can improve the intensity of joint.Therefore, extensively adopted by building industry.This method of attachment needs earlier straight thread to be processed at the two ends of reinforcing bar, gets final product with the sleeve pipe butt joint that has internal thread again.Adopt this method of attachment, need a kind of equipment that can carry out straight thread processing the reinforcing bar head.At present, the equipment that is used for reinforcing bar head straight thread processing mainly is the reinforced bar straight thread rolling head.Be drilled with eight through holes accordingly on the body blind hole bottom of this rolling head and the gear wheel in the blind hole, realize fixing between gear wheel and body by means of eight screws.Simultaneously, on the cylindrical of body, have a radial hole, a screw is installed in this radial hole, make it tightly withstand the cylindrical of gear wheel by regulating this screw.Thereby, realize the locking of rolling head.Use this rolling head, though also can be used for the reinforcing bar head is carried out straight thread processing, but because it is to come gear wheel end face and between cog are fixed by many bolts, not only complex structure, governing speed are slow, work efficiency is not high, and be difficult to lock, the size of reinforced bar straight thread easily changes in the process, difficult quality guarantee.

The purpose of this utility model is to provide a kind of reinforced bar straight thread rolling head.This rolling head is simple in structure, governing speed is fast, work efficiency is high, easy locking, can guarantee crudy.

For achieving the above object, the utility model is taked following technical solution:

Reinforced bar straight thread rolling head of the present utility model comprises disc-shaped body, and the one side of this body has clamping ring and cover plate thereof, and another side has flange.Be processed with vertical blind hole in the middle of the body one side by flange one side, vertically the lower curtate of blind hole has centre bore, and through hole is arranged around this centre bore.Also have centre bore and through hole on the cover plate accordingly.The two ends of eccentric shaft are separately fixed in the through hole of cover plate and the vertical blind hole of body bottom.Roller is enclosed within on the eccentric shaft by means of needle bearing.The end end that eccentric shaft stretches in the vertical blind hole of body is fixed with gear.Its design feature is in vertical blind hole of body worm gear to be arranged, and the internal tooth of this worm gear is meshed with gear.Have horizontal blind hole on the cylindrical of body, laterally be furnished with worm screw in the blind hole, the external tooth of the worm gear that this worm screw and the vertical blind hole of body are interior is meshed.

Adopt above-mentioned technical solution, have the following advantages:

Because in the vertical blind hole of body of the present utility model worm gear is installed, the internal tooth of this worm gear is meshed with gear.Have horizontal blind hole on the cylindrical of body, laterally be furnished with worm screw in the blind hole, the external tooth of the worm gear that this worm screw and the vertical blind hole of body are interior is meshed.By regulating worm screw, can realize the adjusting and the locking of rolling head.Not only simple in structure, governing speed is fast, work efficiency is high, and easily locking, the straight thread size of reinforcing bar can not change in the process, can guarantee crudy.

Fig. 1 is a reinforced bar straight thread rolling head structural representation of the present utility model;

Fig. 2 is the A-A cross-sectional schematic of Fig. 1;

Fig. 3 is the B-B cross-sectional schematic of Fig. 1.

As Fig. 1, Fig. 2 and shown in Figure 3, reinforced bar straight thread rolling head of the present utility model has a circular body 12, and the edge of body 12 circumferentially is processed with eight longitudinal holes, and clamping ring 9 is fixed on the one side of body 12 by means of this longitudinal hole and bolt 2.Clamping ring 9 is a cylinder, and its outer face is processed with eight screws, and the corresponding position, edge of cover plate 5 also is processed with eight screws, and the two fixes by means of bolt 3.Boring has a bigger vertical blind hole in the middle of the adjacent one side of body 12 and flange 15, and vertically the bottom centre of blind hole is drilled with centre bore, is drilled with four through holes around this centre bore.Correspondingly, also be drilled with a centre bore and four through holes on the cover plate 5.In body 12 and the cover plate 5 corresponding a pair of through holes eccentric shaft 8 is arranged all, the interlude diameter of eccentric shaft all overlaps a roller 7 by means of needle bearing 6 greater than the diameter at two ends on this interlude.Said roller 7 is taper, and by an end of cover plate 5 less than the other end.For preventing the axial float of roller 7, and 1/4 pitch of roller 7 is staggered, on the eccentric shaft 8 of 12 of roller 7 one ends and 5 of cover plates and roller 7 other ends and bodies, all overlap a pad 4.Eccentric shaft 8 stretches into an end end in body 12 blind holes, and each fixes a gear 13 by key 16.One worm gear 14 is installed in body 12 blind holes, and the tooth in this worm gear on the circle is meshed with gear 13.Processing one horizontal blind hole on the cylindrical of body 12, this horizontal blind hole is vertical and tangent with vertical blind hole of body 12, and one section car of its oral area has internal thread, and a worm screw 11 is installed in it.The external tooth of the worm gear 14 in this worm screw and the body 12 vertical blind holes is meshed, and it is by means of tightly emitting 10 to fix with body 12.

During work,, choose corresponding rolling wheel 7, and, make eccentric shaft 8 locked by worm gear 14, worm screw 11 and gear 13 according to the diameter of processed reinforcing bar.Simultaneously, motor output shaft and flange 15 Joints.Under the drive of motor, flange 15, body 12, worm gear 14, gear 13 and four eccentric shafts 8 rotate together.At this moment, processed reinforcing bar is inserted in the centre bore of cover plate 5, can realize the straight thread processing of its end.

Claims

1. the reinforced bar straight thread rolling head comprises disc-shaped body (12), and the one side of this body has clamping ring (9) and cover plate (5) thereof, and another side has flange (15); Be processed with vertical blind hole in the middle of the body one side by flange one side, vertically the lower curtate of blind hole has centre bore, and through hole is arranged around this centre bore; Also have centre bore and through hole on the cover plate (5) accordingly; The two ends of eccentric shaft (8) are separately fixed in the through hole of cover plate (5) and the vertical blind hole of body (12) bottom; Roller (7) is enclosed within on the eccentric shaft (8) by means of needle bearing (6); Eccentric shaft (8) stretches into body (12) and vertically is fixed with gear (13) in the end end in the blind hole, and it is characterized in that has worm gear (14) in vertical blind hole of body (12), and the internal tooth of this worm gear is meshed with gear (13); Have horizontal blind hole on the cylindrical of body (12), laterally be furnished with worm screw (11) in the blind hole, this worm screw and body (12) the vertically external tooth of the interior worm gear (14) of blind hole are meshed.

2. reinforced bar straight thread rolling head according to claim 1 is characterized in that the horizontal blind hole oral area on body (12) cylindrical has internal thread for one section, is useful on the tight cap (10) that compresses worm screw (11) in this horizontal blind hole oral area.