CN214557469U

CN214557469U - A top device for assisting liftout

Info

Publication number: CN214557469U
Application number: CN202120682893.8U
Authority: CN
Inventors: 闵锐
Original assignee: Hubei Yixing Intelligent Equipment Co ltd
Current assignee: Hubei Yixing Intelligent Equipment Co ltd
Priority date: 2021-04-03
Filing date: 2021-04-03
Publication date: 2021-11-02
Anticipated expiration: 2031-04-03

Abstract

The utility model provides a top device for assisting liftout, includes the base, its characterized in that: the base is sleeved with an eccentric outer sleeve, a mandrel is sleeved in the eccentric outer sleeve, a tip is clamped in the mandrel, a limiting plate is fixedly connected to the tail end of the mandrel, a buffer device is arranged in a cavity between the mandrel and the limiting plate, an oil cylinder is arranged on the rear side of the base, a cylinder body of the oil cylinder is clamped with the tail end of the eccentric outer sleeve, a piston rod of the oil cylinder is fixedly connected with the buffer device, a push rod is arranged on the rear side of the tip and sequentially penetrates through the mandrel and the piston rod, and an adjusting nut is arranged at the tail end of the push rod. The invention has simple structure and convenient use, can meet the ejection requirements of workpieces with different lengths and has short center height adjustment time of the center.

Description

A top device for assisting liftout

Technical Field

The utility model relates to the field of machining, concretely relates to top device for assisting liftout.

Background

When some long shaft parts are turned, because one end of a workpiece is tightly clamped during clamping, and the other end of the workpiece can be suspended, in order to ensure that the workpiece does not deviate during machining, some auxiliary supports need to be added, wherein the center device is one of the auxiliary supports. In the prior art, the tip and a workpiece are in direct and rapid hard contact when in contact, so that the tip is easy to damage; the top is taken out by ejecting a tail screw or ejecting a front nut, so that the disassembly is time-consuming and labor-consuming. In addition, when the center base needs to be adjusted during installation or later maintenance, the matching and grinding gasket under the base needs to be ground, which is troublesome.

Disclosure of Invention

The utility model aims at overcoming the shortcoming and not enough of prior art, providing a simple structure, convenient to use, the liftout demand of adaptable different length work pieces, the top device that is used for supplementary liftout that top center height adjustment time is short.

In order to achieve the above purpose, the technical solution of the utility model is that: the utility model provides a top device for assisting liftout, includes the base, its characterized in that: the base is sleeved with an eccentric outer sleeve, a mandrel is sleeved in the eccentric outer sleeve, a tip is clamped in the mandrel, a limiting plate is fixedly connected to the tail end of the mandrel, a buffer device is arranged in a cavity between the mandrel and the limiting plate, an oil cylinder is arranged on the rear side of the base, a cylinder body of the oil cylinder is clamped with the tail end of the eccentric outer sleeve, a piston rod of the oil cylinder is fixedly connected with the buffer device, a push rod is arranged on the rear side of the tip and sequentially penetrates through the mandrel and the piston rod, and an adjusting nut is arranged at the tail end of the push rod.

The buffer device comprises a buffer spring and a top block, the bottom of the top block is fixedly connected with the piston rod, and two ends of the buffer spring are respectively connected with the mandrel and the top block.

A sliding groove is formed between the eccentric outer sleeve and the mandrel, a limit screw is fixed in the eccentric outer sleeve, and the tail end of the limit screw extends out of the eccentric outer sleeve and is located in the sliding groove.

The axis of the eccentric outer sleeve is not concentric with the axis of the mandrel.

And a nut is arranged between the buffer device and the limiting plate and is screwed on the piston rod.

And a sealing ring is arranged at the joint of the ejector rod and the mandrel.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses set up buffer gear in the rear end of dabber, buffer gear makes the contact between top and work piece no longer be hard contact, and is littleer to top impact, has effectively prolonged top life, has also protected the centre bore of work piece simultaneously, sets up the ejector pin at top rear side and can effectively reduce the top degree of difficulty of changing.

2. The utility model discloses set up stop screw in axle department, can restrict the stroke of dabber, prevent that the dabber is taken out when the liftout, guarantee the stability of equipment operation.

3. The utility model discloses the axis of well eccentric overcoat is not concentric with the axis of dabber, when the top center height of adjustment, only need rotate eccentric overcoat can, it is more convenient to operate.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises a base 1, an eccentric outer sleeve 2, a mandrel 3, a tip 4, a limiting plate 5, a buffering device 6, an oil cylinder 7, a piston rod 8, an ejector rod 9, an adjusting nut 10, a buffering spring 11, an ejector block 12, a sliding groove 13, a limiting screw 14, a nut 15 and a sealing ring 16.

Detailed Description

The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.

Referring to fig. 1, a centre device for assisting material ejection comprises a base 1, an eccentric outer sleeve 2 is sleeved in the base 1, a mandrel 3 is sleeved in the eccentric outer sleeve 2, the axis of the eccentric outer sleeve 2 is not concentric with the axis of the mandrel 3, a sliding groove 13 is arranged at the contact position of the eccentric outer sleeve 2 and the mandrel 3, a limit screw 14 is fixed in the eccentric outer sleeve 2, the tail end of the limit screw 14 extends out of the eccentric outer sleeve 2 and is positioned in the sliding groove 13, a centre 4 is clamped in the mandrel 3, a limit plate 5 is fixedly connected to the tail end of the mandrel 3, a buffer device 6 is arranged in a cavity between the mandrel 3 and the limit plate 5, the buffer device 6 comprises a buffer spring 11 and a top block 12, two ends of the buffer spring 11 are respectively connected with the mandrel 3 and the top block 12, a nut 15 is arranged between the top block 12 and the limit plate 5, the nut 15 is screwed on a piston rod 8, the rear side of the base 1 is provided with an oil cylinder 7, the cylinder body of the oil cylinder 7 is clamped with the tail end of the eccentric outer sleeve 2, a piston rod 8 of the oil cylinder 7 is fixedly connected with the bottom of an ejector block 12, the rear side of the center 4 is provided with an ejector rod 9, the ejector rod 9 penetrates through the mandrel 3 and the piston rod 8 in sequence, a sealing ring 16 is arranged at the joint of the ejector rod 9 and the mandrel 3, and the tail end of the ejector rod 9 is provided with an adjusting nut 10.

The working process of the utility model is as follows:

when the tail (right) of the cylinder body of the oil cylinder 7 is filled with oil, the piston rod 8 moves leftwards to drive the ejector block 12 to move leftwards, the thrust acts on the mandrel 3 through the buffer spring 6 to push the tip 4 to move leftwards to jack the workpiece, and when the tip 4 contacts the workpiece, the buffer spring 6 compresses the thrust generated by the buffer oil cylinder 7, so that the tip 4 is softer and not easy to damage when the head of the tip contacts the workpiece. The stop screw 14 effectively prevents the mandrel 3 from being withdrawn.

When oil enters the front end (left side) of the cylinder body of the oil cylinder 7, the piston rod 8 moves rightwards to drive the ejector block 12 to move rightwards, meanwhile, the buffer spring 6 slowly extends, the limiting plate 5 is pushed to move rightwards through the nut 15, and the mandrel 3 connected with the limiting plate 5 moves leftwards to drive the tip to retract.

When the center needs to be taken out, the adjusting nut 10 is screwed into the left, then the tail (right) of the cylinder body of the oil cylinder 7 is filled with oil, at the moment, the piston rod 8 moves to the left, the adjusting nut 10 drives the ejector rod 9 to move to the left, the ejector block 12 is driven to move to the left, the thrust acts on the mandrel 3 through the buffer spring 6, the mandrel 3 moves to the left, when the right end of the sliding groove 13 in the mandrel 3 moves to the position of the limit screw 14, the mandrel 3 stops moving, at the moment, the ejector rod 9 continues to move to the left, and the center 4 is pushed out from the inner taper hole of the mandrel 3.

When the center height of the center 4 needs to be adjusted, only the eccentric outer sleeve 2 needs to be rotated, and when the eccentric outer sleeve 2 rotates, the center of the center 4 can move along with the eccentric outer sleeve 2 because the mandrel 3 is not concentric with the outer mounting surface of the eccentric outer sleeve 2, so that the adjustment is more convenient.

Claims

1. A tip device for assisting liftout, includes base (1), its characterized in that: the utility model discloses a novel multi-functional bearing base, including base (1), eccentric overcoat (2) has cup jointed in base (1), dabber (3) has cup jointed top (4) in eccentric overcoat (2), the terminal fixedly connected with limiting plate (5) of dabber (3), be provided with buffer (6) in the cavity between dabber (3) and limiting plate (5), the rear side of base (1) is provided with hydro-cylinder (7), the cylinder body of hydro-cylinder (7) is in the same place with the terminal joint of eccentric overcoat (2), piston rod (8) and buffer (6) fixed connection of hydro-cylinder (7), the rear side of top (4) is provided with ejector pin (9), ejector pin (9) successively pass dabber (3) and piston rod (8), and the tail end of ejector pin (9) is provided with adjusting nut (10).

2. The center device for assisting in ejecting material according to claim 1, wherein: buffer (6) include buffer spring (11) and kicking block (12), kicking block (12) bottom and piston rod (8) fixed connection, buffer spring (11)'s both ends are connected with dabber (3) and kicking block (12) respectively.

3. The center device for assisting in ejecting material according to claim 1, wherein: be provided with spout (13) between eccentric overcoat (2) and dabber (3), eccentric overcoat (2) internal fixation has stop screw (14), the end of stop screw (14) stretches out eccentric overcoat (2) and is located spout (13).

4. The center device for assisting in ejecting material according to claim 1, wherein: the axis of the eccentric outer sleeve (2) is not concentric with the axis of the mandrel (3).

5. The center device for assisting in ejecting material according to claim 1, wherein: a nut (15) is arranged between the buffer device (6) and the limiting plate (5), and the nut (15) is screwed on the piston rod (8).

6. The center device for assisting in ejecting material according to claim 1, wherein: and a sealing ring (16) is arranged at the joint of the ejector rod (9) and the mandrel (3).