CN103203444A

CN103203444A - Lock mold oil cylinder

Info

Publication number: CN103203444A
Application number: CN2012100068503A
Authority: CN
Inventors: 刘贤华
Original assignee: Keda Industrial Co Ltd
Current assignee: ANHUI XIANGSHENG TECHNOLOGY Co.,Ltd.
Priority date: 2012-01-11
Filing date: 2012-01-11
Publication date: 2013-07-17
Anticipated expiration: 2032-01-11
Also published as: CN103203444B

Abstract

The invention belongs to the technical field of high-pressure lock mold equipment, particularly relates to a lock mold oil cylinder. The lock mold oil cylinder comprises a cylinder, and a piston and a main nut which are arranged in the cylinder; and the piston and the main nut are spherically connected. According to the lock mold oil cylinder, the connecting structure between the piston and the main nut is changed into a spherical connecting structure, the piston and the main nut can rotate relatively, the piston is not fixed and restrained by the main nut and can deflect together with the cylinder when the cylinder deflects together with a fixed beam, so that the good sealing effect between the piston and the cylinder is ensured, and the problem that the piston scratches the cylinder is effectively solved.

Description

A kind of Mode-locking oil cylinder

Technical field

The invention belongs to the high-voltage lock mould equipment technical field, be specifically related to a kind of Mode-locking oil cylinder.

Background technology

Mode-locking oil cylinder is a kind of mechanism that high-voltage lock mould is provided of vertical two panel extrusion shapers.As shown in Figure 1, when mould 6 is carried out high-voltage lock mould, its moving beam 1 and decide beam 2 clampings in mould 6 both sides, one end of pull bar 3 runs through to be decided beam 2 and locks together with Mode-locking oil cylinder 5, the other end of pull bar 3 runs through moving beam 1 and is threaded togather with cohesion nut 4, can make behind the hydraulic oil end of pull bar 3 to the outer side shifting of decide beam 2 in case inject in the Mode-locking oil cylinder 5, so pulling to move beam 1 close to deciding beam 2, reach the purpose of tightly pinning mould 6.

As shown in Figure 2, Mode-locking oil cylinder 5, the mother nut 55 that comprises the cylinder barrel 52 that is fixedly connected on the drive end bearing bracket 51 decided on the beam 2, links together by screw with described drive end bearing bracket 51, is sleeved on piston rod 53 on the pull bar 3, is connected piston 54 on the piston rod, is threaded togather with pull bar 3 and be connected cylinder barrel 52 tail ends be connected cover 56.

As shown in Figure 3, in existing Mode-locking oil cylinder 5, fixedly connected by screw between mother nut 55 and the piston 54, mother nut 55 is plane (shown in the B part among Fig. 3) with the contact-making surface of piston 54.

As illustrated in fig. 1 and 2, at moving beam 1 with decide in beam 2 extrusion dies 6 processes, decide beam 2 stressed meetings and produce the slight curves of direction shown in the dotted line among the figure, decide beam 2 stress deformations and will drive drive end bearing bracket 51, cylinder barrel 52 deflection together, yet pull bar 3 is can be with not deciding beam 2 bendings, thereby makes and can produce certain drift angle between pull bar 3 and the cylinder barrel 52.

Owing to be to fixedly connected in the plane between mother nut 55 and the piston 54, mother nut 55 is fixed on again on the pull bar 3, then piston 54 can be not the same as deciding beam 2 deflections with cylinder barrel 52, to form certain included angle between piston 54 and the cylinder barrel 52 so, the generation of this angle will destroy sealing generation oil leakage phenomenon.More seriously, because the gap very little (usually less than 1 millimeter) between piston 54 and the cylinder barrel 52, not to the gap between mother nut 55 and the cylinder barrel 52 so big (usually between the 2-5 millimeter) is out of shape than greatly the time when decide beam 2, and piston 54 is with direct scratch cylinder barrel 52.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide a kind of sealing effectiveness better and be not easy by the Mode-locking oil cylinder of scratch.

For achieving the above object, technical scheme that the present invention adopts is as follows:

A kind of Mode-locking oil cylinder, sphere is connected between the piston and the mother nut that comprise cylinder barrel and be positioned at cylinder barrel inside, piston and mother nut.

Further, the lower surface of described piston is the concave spherical surface that indent forms, and the upper surface of described mother nut is the protruding sphere that evagination forms; Sphere is connected between described piston and the mother nut, specifically is that described concave spherical surface is connected with described protruding sphere contact.

Further, the lower surface of described piston is the protruding sphere that evagination forms, and the upper surface of described mother nut is the concave spherical surface that indent forms; Sphere is connected between described piston and the mother nut, specifically is that described concave spherical surface is connected with described protruding sphere contact.

Further, the internal diameter of described concave spherical surface and described protruding sphere is outer through identical.

Further, the gap between described mother nut and the described cylinder barrel is more than or equal to 1.5 millimeters.

The present invention has changed the syndeton between piston and the mother nut into the sphere syndeton, can rotate relatively between piston and the mother nut, piston no longer is subjected to the fixedly constraint of mother nut, at cylinder barrel with deciding in the beam deflection, piston can be followed cylinder barrel deflection together, and then guaranteed excellent sealing effect between piston and the cylinder barrel, and can effectively avoid piston scratch cylinder barrel.

Description of drawings

The picture that this description of drawings provides is used for auxiliary to further understanding of the present invention, constitutes the application's a part, does not constitute to improper restriction of the present invention, in the accompanying drawings:

Fig. 1 is the overall structure schematic diagram of high-voltage lock mould mechanism;

Fig. 2 is cross-sectional view of the present invention;

Fig. 3 is the piston of existing Mode-locking oil cylinder and the annexation schematic diagram between the mother nut;

Fig. 4 is the A partial schematic diagram of Fig. 2, namely is the annexation schematic diagram between piston of the present invention and the mother nut.

Diagram:

1, moving beam 2, Ding Liang

3, pull bar 4, cohesion nut

5, Mode-locking oil cylinder 6, mould

51, drive end bearing bracket 52, cylinder barrel

53, piston rod 54, piston

55, mother nut 56, connection cover

The specific embodiment

Describe the present invention in detail below in conjunction with accompanying drawing and specific implementation method, be used for explaining the present invention in schematic enforcement of the present invention and explanation, but not as a limitation of the invention.

Embodiment 1:

As shown in Figure 2, present embodiment discloses a kind of Mode-locking oil cylinder, the mother nut 55 that it still mainly comprises the cylinder barrel 52 that is fixedly connected on the drive end bearing bracket 51 decided on the beam 2, links together by screw with described drive end bearing bracket 51, be sleeved on piston rod 53 on the pull bar 3, be connected piston 54 on the piston rod, be threaded togather with pull bar 3 and be connected cylinder barrel 52 tail ends be connected cover 56, piston 54 and mother nut 55 all are positioned at cylinder barrel 52.

As shown in Figure 4, the lower surface of piston 54 is the concave spherical surface that indent forms, the upper surface of described mother nut 55 is the protruding sphere that evagination forms, and the concave spherical surface of piston 54 contacts with the protruding sphere of mother nut 55 and is connected, namely be piston 54 with mother nut 55 between sphere be connected (shown in the B part among Fig. 4).Certainly, in order to make piston 54 and mother nut 55 fiting effects better, the internal diameter of described concave spherical surface is outer through identical with described protruding sphere.

Though mother nut 55 is enough big with the spacing of described cylinder barrel 52 in the existing structure, hinder cylinder barrel 52 in order to prevent that mother nut 55 from hanging, the gap between the further clear and definite mother nut 55 of present embodiment and the cylinder barrel 52 is more than or equal to 1.5 millimeters.

Need to prove that sphere is connected between piston 54 and the mother nut 55, specifically can also be:

Change the lower surface of piston 54 into protruding sphere that evagination forms, the upper surface of mother nut 55 changes the concave spherical surface that indent forms into, and the protruding sphere of piston 54 is connected with the contact of the concave spherical surface of mother nut 55.Its principle and Fig. 4 structure are identical, only are that the two concavo-convex sphere that is in contact with one another is exchanged.

Need to prove that the internal diameter that present embodiment includes but not limited to concave spherical surface is outer through identical situation with described protruding sphere, also comprises the internal diameter of concave spherical surface greater than the situation of the external diameter of protruding sphere, these all are protection scope of the present invention.

Adopt the present embodiment structure, the piston of Mode-locking oil cylinder can not deflect with cylinder barrel as being fastenedly connected, and avoids Mode-locking oil cylinder serious leakage or coup injury phenomenon, the service life of having improved present embodiment to occur.

More than technical scheme that the embodiment of the invention is provided be described in detail, used specific case herein principle and the embodiment of the embodiment of the invention are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims

1. a Mode-locking oil cylinder comprises cylinder barrel (52) and is positioned at cylinder barrel (52) inner piston (54) and mother nut (55), it is characterized in that:

Sphere is connected between described piston (54) and the mother nut (55).

2. Mode-locking oil cylinder according to claim 1 is characterized in that:

The lower surface of described piston (54) is the concave spherical surface that indent forms, and the upper surface of described mother nut (55) is the protruding sphere that evagination forms; Sphere is connected between described piston (54) and the mother nut (55), specifically is that described concave spherical surface is connected with described protruding sphere contact.

3. Mode-locking oil cylinder according to claim 1 is characterized in that:

The lower surface of described piston (54) is the protruding sphere that evagination forms, and the upper surface of described mother nut (55) is the concave spherical surface that indent forms; Sphere is connected between described piston (54) and the mother nut (55), specifically is that described concave spherical surface is connected with described protruding sphere contact.

4. according to claim 2 or 3 described Mode-locking oil cylinders, it is characterized in that:

The internal diameter of described concave spherical surface is outer through identical with described protruding sphere.

5. Mode-locking oil cylinder according to claim 1 is characterized in that:

Gap between described mother nut (55) and the described cylinder barrel (52) is more than or equal to 1.5 millimeters.