CN2545235Y - Improved flat seaming needle drive shaft sealing structure of flat seaming machine - Google Patents

Abstract

An improved flat seaming machine satin stitch drive shaft seal structure; the structure comprises a satin stitch vertical shaft sleeve which is fixed on the hull of the flat seaming machine, a drive shaft which is penetrated through the vertical shaft sleeve and a limited block which is fixed on the drive shaft; a ring groove is arranged at the joint of the end face of the limited block and the external wall; an O-shaped seal ring is arranged in the ring groove. Because the limited block rotates with the drive shaft, the seal ring is in a static seal state relative to the drive shaft, the end face of the seal ring is propped and compressed on the end face of the bottom of the vertical shaft sleeve; in this way, the seal ring groove is easy to be taken out at the cornet of the limited block end face, the precision is increased and the contact of the moving seal of the seal ring is reduced. The improved structure is characterized by simple manufacture, convenient installation and maintenance and excellent sealing property.

Description

The improved flat seaming machine pin power transmission shaft hermetically-sealed construction that stretches tight

The utility model relates to a kind of accessory of flat seaming machine, particularly to the stretch tight improvement of pin power transmission shaft hermetically-sealed construction of flat seaming machine.

The sealing of stretching tight between pin power transmission shaft and the axle sleeve in the existing flat seaming machine is guaranteed its inwall and power transmission shaft sealing by the sealing ring in the sleeve lining ring recess, because ring recess is positioned on the sleeve lining, on the one hand, the ring recess manufacture difficulty is big, rough inner surface, the O RunddichtringO places in it easily from the inner surface seepage, on the other hand, power transmission shaft carries out along the de-rotation intersection, causes that easily sealing ring sealing contact surface both sides rub simultaneously, cause the sealing ring abrasion, influenced the service life of sealing ring.

The purpose of the utility model is to provide a kind of good sealing effect, make simple, the stretch tight hermetically-sealed construction of pin power transmission shaft of the flat seaming machine of long service life.Its technical scheme is such: it comprises the pin vertical pivot cover that stretches tight that is fixed on the flat seaming machine casing, be applied in the power transmission shaft that vertical pivot put, had crank, be positioned at vertical pivot cover lower end and be fixed on limited block on the power transmission shaft, wherein limited block end face and inwall intersection are provided with ring recess, and ring recess is built in the O RunddichtringO.Because limited block is with the power transmission shaft transmission, the relative power transmission shaft of sealing ring is in static seal, and the end face of sealing ring is overlapped bottom face by roof pressure at vertical pivot again, like this, on the one hand, seal groove is at the easy pumping slot of limited block end face angle, and the precision of being processed into is also high, has avoided the seepage of sealing ring in ring recess, on the other hand, reduce the contact-making surface of the movable sealing of sealing ring, reduced the abrasion of sealing ring, prolonged the service life of sealing ring.Thereby it is simple that it has making, and installation, maintenance is convenient, advantages such as good seal performance.

Below in conjunction with embodiment shown in the drawings, the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the enlarged drawing of Figure 1A portion.

Referring to Fig. 1, Fig. 2, the improved flat seaming machine pin power transmission shaft hermetically-sealed construction that stretches tight comprises the pin vertical pivot cover 2 that stretches tight that is fixed on the flat seaming machine casing 3, places rotary power transmission shafts 5 in the vertical pivot cover 2, is fixed on the limited block 7 that limits its vertical tremor on the power transmission shaft 5.Have seal groove between limited block 7 end faces and the inwall, sealing ring 4 places on the ring recess, makes it slightly protrude limited block 7 end faces, this end face roof pressure is overlapped on 3 lower surfaces at vertical pivot, and with screw 6 limited block 7 is fixed on the power transmission shaft 5.Like this, sealing ring 4 is close to power transmission shaft 5, vertical pivot cover 2, has stoped the seepage of oil in the flat seaming machine casing, thereby has reached effective sealing.

Claims (1)

1. the improved flat seaming machine hermetically-sealed construction of pin power transmission shaft that stretches tight, it comprises the pin vertical pivot cover (2) that stretches tight that is fixed on the flat seaming machine casing (3), be applied in power transmission shaft on the vertical pivot cover (2), that have footstalk (1) (5), be positioned at vertical pivot cover (2) lower end, be fixed on the limited block (7) on the power transmission shaft (5), it is characterized in that: limited block (7) end face and inwall intersection are provided with ring recess, and O RunddichtringO (4) is housed in the ring recess.