CN103567960A - Pin pulling device - Google Patents

Abstract

The invention discloses a pin pulling device, which comprises a body, and specifically comprises a guide part and a support part which are integrally molded, a support sleeve, a threaded sleeve, a chuck, fan blades, and a rotating head, wherein a support groove is formed in the support part, and the body is arranged in the support sleeve and slides relative to the support sleeve; the threaded sleeve is arranged on the guide part, and one end of the threaded sleeve is propped against the end face of the support sleeve; when the threaded sleeve is rotated, the body and the support sleeve oppositely move; the chuck is arranged in the guide part and is provided with two jaws, and the end heads of the two jaws are outwards provided with support blocks respectively; the fan blades are arranged between the support groove and the support blocks, and the jaws are extruded by the fan blades to move inward to clamp a pin to be pulled; the rotating head is in threaded connection with the chuck and drives the chuck to move through threads so that the pin is pulled out. The device is simple and quick to operate, and does not damage the pin.

Description

The spike devices of pulling pin

Technical field

The present invention relates to mechanical assembling field, particularly a kind of spike devices of pulling pin.

Background technology

In machinery assembling field, pin mainly, as assembling and positioning, also can be used as connector.Such as, straight pin, it is commonly used in machinery assembling field as connector, and most straight pins is arranged on part by interference fit, the part that general straight pin exposes is very short (4-5mm) often, straight pin itself is very smooth again, there is no the point that can put forth effort, at this time straight pin will be pulled out to the difficult that just seems.

At present, general method is, in the situation that carrying out part protection, at a bolt of cylinder plunger welding, then by pulling out bolt, to reach the object of tearing straight pin open.

But while utilizing aforesaid way to choose straight pin, first, the ground that mechanical part to be torn open need to be delivered to electric welding machine can operate just now, can not operate on production line, impact is normally produced; Secondly, because straight pin exposed portions serve is very short, parts, near parts, are easily injured in welding position during welding; Again, welding itself has destroyed reusing of pin, causes waste, meanwhile, and inefficiency.

Summary of the invention

The present invention is in order to overcome defect in above-mentioned prior art, and a kind of spike devices of pulling pin is provided, and solves the pin difficult problem of choosing, simple to operate, does not hinder pin itself.

For achieving the above object, the invention provides a kind of spike devices of pulling pin, comprise: body, it specifically comprises integrated guide part and support portion, guide part is the cylindrical body with pilot hole, and pilot hole and support portion connect, and on guide part lateral wall, are provided with external screw thread, support portion is outwardly open concave body, at the madial wall place of concave body, is provided with support slot; Support set, it is the concave structure with through hole, and guide part is through through hole, and the lateral wall of concave body and the madial wall of concave structure are slidably matched; Thread bush, it coordinates with external screw thread, and one end of thread bush is connected on the end face of support set, and when rotation thread bush, body and support set relatively move; Chuck, it is contained in pilot hole, and chuck is the cylinder with two intermediate plates, in cylinder one end, is provided with internal thread, in two intermediate plate terminations, is outwards respectively equipped with back-up block; Fan sheet, it is contained between support slot and back-up block, and when chuck moves inward along pilot hole, fan sheet extruding intermediate plate comes closer to clamp and waits to pull pin nail; Swivel head, its one end insert pilot hole and and screw-internal thread fit, the other end is connected to guide part front end, when rotation swivel head, swivel head moves along pilot hole by screw drive chuck.

In technique scheme, two intermediate plate bare terminal end inner surfaces are suitable with the nail profile of waiting to pull pin.

In technique scheme, two intermediate plate termination inner surfaces are semicircle.

In technique scheme, in back-up block inner side, be provided with groove, groove mates with fan sheet one end.

In technique scheme, support slot and groove are circular configuration, and fan sheet two ends coordinate with circular configuration.

In technique scheme, on swivel head, be provided with clamping swingle.

In technique scheme, on thread bush, be provided with back-out bar.

Compared with prior art, the beneficial effect that the present invention has: by design chuck, the convenient pin that clamps, solves the pin difficult problem of choosing; By design support set, body and thread bush, can, so that the relative support set relative motion of chuck and then extract pin is simple to operate, not hinder pin itself.

Accompanying drawing explanation

Fig. 1 is the present invention's spike devices structural representation of pulling pin;

Fig. 2 is chuck structure schematic diagram in the present invention;

Fig. 3 is the left view of Fig. 2;

Fig. 4 utilizes the present invention's spike devices pin view of choosing of pulling pin.

Mark the following drawings mark thereon by reference to the accompanying drawings:

1-body, 11-guide part, 12-support portion, 2-support set, 3-thread bush, 31-screws out bar, 4-chuck, 41-intermediate plate, 42-back-up block, 43-internal thread, 44-otch, 5-fans sheet, 6-swivel head, 61-clamps swingle.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of the specific embodiment.

The spike devices of pulling pin of the present invention is mainly choose difficulty and design for existing pin, by design chuck, clamps pin exposed portions serve, then by thread bush, drives chuck to move and then takes out pin.This device can operate on the production line of original place, is not subject to the restriction in time, place, and this device is simple to operate, and efficiency is high, and in addition, this device can not destroy pin, saves cost.

As shown in Figure 1, the spike devices of pulling pin of the present invention comprises body 1, support set 2,thread bush 3,chuck 4,fan sheet 5 and swivel head 6, body 1 specifically comprises integrated guide part 11 and support portion 12, guide part 11 is cylindrical body structure, in guide part 11 inside, be provided with pilot hole (unmarked in figure), pilot hole and support portion 12 connect, on guide part 11 lateral walls, be provided with external screw thread (unmarked in figure), support portion 12 is outwardly open concave body structure, is provided with support slot (unmarked in figure) at the madial wall place of concave body.Support set 2 is the concave structure with through hole (unmarked in figure), body 1 is contained in support set 2, it is mainly the pin of choosing and provides support, particularly, guide part 11 is through through hole, and the lateral wall of concave body and the madial wall of concave structure are slidably matched, when choosing pin, the edge of concave structure is supported on part 8 surfaces upper (referring to Fig. 4), and body 1 slides along support set 2.The driving force of body 1 is fromthread bush 3, andthread bush 3 coordinates with external screw thread, and one end ofthread bush 3 is connected on the end face of support set 2, whenrotation thread bush 3, body 1 slides along the madial wall of support set 2 concave structures, in addition, onthread bush 3, be provided with and screw outbar 31, convenient rotation thread bush 3.Chuck 4 is contained in pilot hole, andchuck 4 one end are provided with two intermediate plate 41(referring to Fig. 2), the other end is provided withinternal thread 43, in twointermediate plate 41 terminations, is outwards respectively equipped with back-up block 42(referring to Fig. 2), in back-upblock 42 inner sides, be provided with groove 421.Whenchuck 4 is contained in pilot hole,fan sheet 5 is contained between support slot and thegroove 421 of back-upblock 42, and whenchuck 4 moves inward,fan sheet 5 extruding twointermediate plates 41 come closer, thereby clamp the nail 7(that waits to pull pin referring to Fig. 4).Chuck 4 drives by swivel head 6, swivel head 6 one end are designed to bolt arrangement, and after insertion pilot hole, with the internal thread 43(ofchuck 4 referring to Fig. 2) coordinate, swivel head 6 other ends are connected to guide part 11 front ends, at swivel head 6 front ends, be provided with andclamp swingle 61, when rotation swivel head 6,swivel head 5 moves along pilot hole byscrew drive chuck 4.

As shown in Figures 2 and 3, in such scheme,chuck 4 can process by cylindrical member, particularly, chuck 4 one end machininginternal threads 43, theintermediate plate 41 of the other end can be realized by cut akerf 44 in the middle of cylindrical member,intermediate plate 41 has elasticity,intermediate plate 41 front ends are outer to be processed back-upblock 42 and processesgroove 421, andgroove 421 is designed to 6 (referring to Fig. 3) symmetrically,intermediate plate 41 front end inside process and wait the suitable cavity of nail profile of pulling pin,intermediate plate 41 front end inner surfaces can be designed as semicircle, also can be designed as flat shape, as long as conveniently clamp, wait to pull pin nail.

In order to fan location and the rotation ofsheet 5, support slot andgroove 421 are designed to circular configuration, and correspondingly,fan sheet 5 two ends are also designed to circular configuration, and its two ends coordinate with support slot andgroove 421 respectively.

As shown in Figure 4, the concrete structure principle of this device is above narrated, when utilizing this device to choose pin, first, support set 2 is supported on part 8 surfaces, the nail exposed portions serve of waiting to pull pin stretches between twointermediate plates 41, rotate and clamp swingle 61, be threadedconnection tensioning chuck 4 and move to the left,chuck 4 produces relative motion withfan sheet 5,intermediate plate 41 is out of shape to the inside owing to being subject to the effect of power, thereby clamps pin 7.Then, rotate and screw outbar 31drive thread bush 3 rotations, be threaded connection and make body 1 and support set 2 produce relative motion, chuck 4 moves together with body 1, and then reaches the object of extracting pin 7.

Disclosed is above only specific embodiments of the invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims (7)

1. the spike devices of pulling pin, is characterized in that, comprising:

Body, it specifically comprises integrated guide part and support portion, described guide part is the cylindrical body with pilot hole, described pilot hole and described support portion connect, on described guide part lateral wall, be provided with external screw thread, described support portion is outwardly open concave body, at the madial wall place of described concave body, is provided with support slot;

Support set, it is the concave structure with through hole, and described guide part is through described through hole, and the lateral wall of described concave body and the madial wall of described concave structure are slidably matched;

Thread bush, it coordinates with described external screw thread, and one end of described thread bush is connected on the end face of described support set, and when the described thread bush of rotation, described body and described support set relatively move;

Chuck, it is contained in described pilot hole, and described chuck is the cylinder with two intermediate plates, in described cylinder one end, is provided with internal thread, in intermediate plate termination described in two, is outwards respectively equipped with back-up block;

Fan sheet, it is contained between described support slot and described back-up block, and when described chuck moves inward along described pilot hole, described fan sheet pushes described intermediate plate and comes closer to clamp and wait to pull pin nail;

Swivel head, its one end insert described pilot hole and with described screw-internal thread fit, the other end is connected to described guide part front end, when rotation is during described swivel head, described swivel head moves along described pilot hole by chuck described in screw drive.

2. the spike devices of pulling pin according to claim 1, is characterized in that, described two intermediate plate bare terminal end inner surfaces are suitable with the nail profile of waiting to pull pin.

3. the spike devices of pulling pin according to claim 2, is characterized in that, described two intermediate plate termination inner surfaces are semicircle.

4. the spike devices of pulling pin according to claim 1, is characterized in that, in described back-up block inner side, is provided with groove, and described groove mates with described fan sheet one end.

5. the spike devices of pulling pin according to claim 4, is characterized in that, described support slot and described groove are circular configuration, and described fan sheet two ends coordinate with described circular configuration.

6. according to the arbitrary described spike devices of pulling pin of claim 1 to 5, it is characterized in that, on described swivel head, be provided with clamping swingle.

7. according to the arbitrary described spike devices of pulling pin of claim 1 to 5, it is characterized in that, on described thread bush, be provided with back-out bar.

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