CN212398143U

CN212398143U - Automatic material puller

Info

Publication number: CN212398143U
Application number: CN202021074094.4U
Authority: CN
Inventors: 肖文平
Original assignee: Wuhan Feituoke Industry Co ltd
Current assignee: Wuhan Feituoke Industry Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-01-26
Anticipated expiration: 2030-06-11

Abstract

The utility model relates to an automatic material field that draws of numerical control lathe turning unloading, concretely relates to automatic material puller, including drawing material pole, expansion block, adjusting device, the front end of drawing the material pole is provided with the lamella of partition, the expansion block sets up in the cavity that the lamella formed, the expansion block is provided with the external conical surface of contracting gradually towards the lamella direction, adjusting device connects movably on drawing the material pole to the axial is injectd and is adjusted the expansion block relative the position of lamella. The utility model discloses an adjusting device promotes the inflation piece and then extrudees the lamella that draws the material pole to be located the front end, forces the lamella to radially open or draw in to the external diameter that changes and draw the material pole front end makes the utility model discloses can be applicable to the bar in certain limit aperture. The utility model discloses realize automatic drawing the material, one person's multimachine production, lifting efficiency improves the production security, has reduced working strength.

Description

Automatic material puller

Technical Field

The utility model relates to a numerical control processing field, concretely relates to automatic material field that draws of numerical control lathe turning unloading.

Background

For the purpose of realizing full-automatic machining, a numerical control lathe is generally provided with a corresponding automatic feeding mechanism. However, in a workshop with limited space, the numerically controlled lathe may not be equipped with an automatic feeding mechanism, so that the turning and blanking process requires manual drawing and processing, and an operator at a processing site usually has one person to take charge of the care work of a plurality of numerically controlled lathes, so that the following problems occur: 1. the machine tool is stopped due to untimely material pulling, so that the machining efficiency is influenced; 2. the potential safety hazard exists due to manual material pulling; 3. each machine needs manual drawing or changing and self-checking quality, and the working intensity of workers is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides an automatic material puller, which comprises a material pulling rod, an expansion block and an adjusting device, wherein the material pulling rod is provided with a front end, the front end is divided into equally-divided petals by grooves, the expansion block is arranged in a cavity formed by the petals, the expansion block is provided with an external conical surface which gradually shrinks towards the petal direction, the adjusting device is movably connected on the material pulling rod and axially limits and adjusts the position of the expansion block relative to the petals, and when the external conical surface gradually contacts the petals, the petals radially expand; when the outer conical surface is gradually away from the petals, the petals are radially closed.

Furthermore, an inner conical surface which is gradually gathered is arranged on the inner wall of the valve.

Further, the end of the groove is connected with the hole.

Furthermore, an elastic piece is arranged between the adjusting rod and the expansion block.

Further, the adjusting rod is an adjusting screw.

The utility model has the advantages that; 1. one person can produce a plurality of machines, so that the efficiency is improved; 2. the material is automatically pulled, so that the production safety is improved; 3. avoid artifical drawing of materials, reduced working strength.

Drawings

Fig. 1 is a sectional view of the present invention;

fig. 2 is an exploded perspective view of the present invention;

FIG. 3 is a schematic structural view of the present invention in an operating state;

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Reference to

The utility model discloses an automatic material puller includes material pulling rod 16, expansion block 22, adjusting rod 36, material pulling rodThe material of 16 is preferably S17400H 900, and Cr12 or 40Cr may be used for heat treatment

The expansion block 22 is arranged in a cavity 10 formed by the petals 18, the expansion block 22 is provided with a smooth front end portion 34, the outer diameter of the front end portion 34 is slightly smaller than the inner diameter of the cavity 10, and the front end portion 34 is arranged in the cavity 10. The material of the expansion block 22 is preferably nylon rod, and can also be made of other non-metallic materials which are easy to process. The front end 34 of which adjoins a conical rear end which tapers in the direction of the flap 18, i.e. on which the outer conical surface 24 is formed. The adjustment device 36 is movably connected to the lifter bar 16, in particular, one end of the adjustment device 36 is inserted through the central hole 20 of the expansion block 22 into a hole 38 located in the cavity 10, the adjustment device 36 being provided with a projection 42 for defining the expansion block 22. The adjusting device 36 is made of common steel, and the connection form is not limited to threads, bolts, snap rings and the like. In a preferred embodiment of the present invention, the adjusting device 36 is an adjusting screw. I.e. a female thread is machined in the bore 38 and a male thread is machined at one end of the adjustment device 36 to mate with it, the adjustment device 36 being threaded onto the puller rod 16.

Referring to fig. 3, prior to use, a set program is entered into the machine tool control panel to clamp the rear end 32 of the puller bar 16 to the machine tool turret, and after the inner bore 50 of the bar 56 has been machined, the turret (not shown) is advanced to a set position, the front end 52 of the puller bar 16 is inserted into the inner bore 50, and the outer diameter 28 of the front end 52 of the puller bar 16 is in interference fit with the inner bore 50 of the bar 56. The hydraulic three-jaw (not shown) for clamping the bar 56 is released, the cutter tower retreats to the set position, the bar 56 is automatically pulled out, the hydraulic three-jaw clamps, the cutter tower retreats to the safe position continuously, the puller is separated from the inner hole 50 of the bar, and the machine tool continues to carry out the next instruction in cycles.

One aspect of the present invention is that the adjustment device 36 can axially adjust the position of the expansion block 22 relative to the petals 18 to radially expand or contract the petals 18. For example, when the adjustment device 36 pushes the expansion block 22 axially into the cavity 10, the outer conical surface 24 of the expansion block 22 gradually contacts the inner wall of the petals 18, and the petals 18 radially expand under the compression of the outer conical surface 24, and the outer diameter 28 of the front end 52 gradually increases; conversely, as the expansion block 22 moves axially away from the cavity 10, the lobes 18 radially collapse and the outer diameter 28 of the leading end 52 gradually decreases. The outer diameter 28 of the front end 52 varies within a certain size range, thereby enabling the utility model to be applicable to bars in a certain range of apertures, promoting the range of application. The grooves 26 provide the petals 18 with an advantage of radial opening or closing movement, and in another preferred embodiment, the ends of the grooves 26 are connected to holes 30, and the holes 30 reduce stresses that are locally generated when the petals 18 open or close, further facilitating radial movement of the petals 18.

Preferably, tapered inner conical surfaces 12 are provided on the inner walls of the petals 18, the inner conical surfaces 12 reducing the friction between the petals 18 and the outer conical surfaces 24 to provide smoother axial movement of the expansion blocks 22 and thereby reduce the force on the adjustment mechanism 36. To facilitate the entry of the puller into the bore 50 of the bar 56, the outer wall 54 of the lobe 18 may be tapered or radiused.

In a preferred embodiment, an elastic element 40 is arranged between the adjustment rod 36 and the expansion block 22, the elastic element 40 being arranged between the projection 42 of the adjustment device 26 and the end 48 of the expansion block 22, preferably a spring, which on the shaft compensates for the position of the expansion block 22 into the cavity 10.

The invention has been described with reference to the preferred embodiments, to the above examples which are not intended to limit the invention, and from reading the present description, those skilled in the art will be able to conceive of numerous modifications and variations to this structure, without departing from the inventive concept, any obvious alternative falling within the scope of the invention.

Claims

1. Automatic puller, comprising a puller rod (16), an expansion block (22), an adjusting device (36), characterized in that said puller rod (16) has a front end (52), said front end (52) is divided into equally divided petals (18) by a groove (26), said expansion block (22) is arranged in a cavity (10) formed by said petals (18), said expansion block (22) is provided with a gradually contracting external cone surface (24) in the direction towards said petals (18), said adjusting device (36) is movably connected to said puller rod (16) and axially defines and adjusts the position of said expansion block (22) relative to said petals (18), said petals (18) are radially expanded when said external cone surface (24) gradually contacts said petals (18); the petals (18) radially converge as the outer conical surface (24) tapers away from the petals (18).

2. The automatic puller according to claim 1, characterized in that the inner wall of said petal (18) is provided with an inner conical surface (12) which tapers.

3. The automatic puller according to claim 2, characterized in that the end of the groove (26) is connected to the hole (30).

4. The automatic puller according to claim 3, characterized in that an elastic member (28) is provided between said adjusting device (36) and said expansion block (22).

5. The automatic puller according to any one of claims 1 to 4, characterized in that said adjusting device (36) is an adjusting screw.