CN203738639U

CN203738639U - Clamp

Info

Publication number: CN203738639U
Application number: CN201420049025.6U
Authority: CN
Inventors: 康惠忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-24
Filing date: 2014-01-24
Publication date: 2014-07-30
Anticipated expiration: 2024-01-24

Abstract

The utility model provides a clamp. The clamp comprises an upper clamping arm and a lower clamping arm, wherein the upper clamping arm and the lower clamping arm are movably connected in sequence through a shaft, the shaft is sleeved with a torsional spring, two supporting legs of the torsional spring are pressed on the upper clamping arm and the lower clamping arm respectively, the upper clamping arm and the lower clamping arm are provided with a first concave portion and a second concave portion respectively, the upper concave portion and the lower concave portion correspond to each other, the upper concave portion and the lower concave portion form a force bearing portion, two driving rods are arranged in the force bearing portion and abut against the first concave portion and the second concave portion respectively, and the driving rods drive and are connected with an external pneumatic mechanism. By means of the technical scheme, the upper clamping arm and the lower clamping arm are kept closed due to the normally-closed characteristic of the torsional spring, the upper clamping arm and the lower clamping arm are driven by the driving rods to be separated, it is ensured that when the opened state of the clamp is kept for a long time, no abrasion is caused and accuracy is not reduced, and the clamp is tight in clamping, reasonable in structure and design and high in opening and closing speed.

Description

A kind of fixture

Technical field

The utility model relates to mechanical field, refers to especially a kind of fixture.

Background technology

Carry out at present the anticorrosion or Wear-resistant Treatment of the oxidation of aluminium, magnesium, titanium alloy in the oxidation technology streamline of product time, operate again after need to first using the product clamping that fixture will be processed.A ring important in whole technological process to the clamping of product, in other words, if the Position Control to product is bad, have influence on the effect that product carries out oxidation operation, and how accurately and rapidly product to be clamped, seem particularly important, in current clamping station, major part is all to adopt simple mechanical clamp to clamp or manual operation clamping, simple mechanical clamp clamping, exist clamp precision not high, clamp inefficient problem, manual operation clamping has increased labourer's labour intensity, and efficiency is not high.

Utility model content

The utility model proposes a kind of fixture, solved that clamp precision in prior art is high, the problem of inefficiency.

The technical solution of the utility model is achieved in that

A kind of fixture, comprise: the upper clip arm being flexibly connected successively by axle and lower clip arm, on described axle, be arranged with torque spring, two legs of described torque spring compress respectively described upper clip arm and described lower clip arm, on described upper clip arm and described lower clip arm, be respectively equipped with the first recess and second recess of mutual correspondence, described the first recess and described the second recess form forced section, in described forced section, be provided with two drive rods, the first recess and described the second recess described in described drive rod difference butt, described drive rod drives and connects external pneumatic mechanism.

Further, on described upper clip arm and described lower clip arm, be respectively equipped with corresponding through hole, in described through hole, run through and be provided with screw rod.

Further, on described screw rod, be arranged with locking nut.

Further, described upper clip arm and described lower clip arm back are provided with groove, and groove floor is provided with lug boss, lug boss described in the leg snapping of described torque spring.

Further, a described upper clip arm and described lower clip arm side front end is in correspondence with each other provided with broached-tooth design.

The beneficial effects of the utility model are: pass through such scheme, utilize normally closed property preservation upper clip arm and the lower clip arm closure of torque spring, recycling drive rod drives upper clip arm to separate with lower clip arm, ensure that fixture can not cause wearing and tearing to reduce precision because staying open for a long time state, clamp tight and reasonable in design, open closing velocity fast.

Brief description of the drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the planar structure schematic diagram of an embodiment of a kind of fixture of the utility model;

Fig. 2 is the sectional structure schematic diagram of fixture shown in Fig. 1;

Fig. 3 is the perspective view of fixture shown in Fig. 1.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.

An embodiment referring to Fig. 1 to a kind of fixture of the utility model shown in Fig. 3, comprising: upper clip arm 3 and lower clip arm 2, one end of upper clip arm 3 and lower clip arm 2 correspondences is flexibly connected by axle 1.On described axle 1, be arranged with torque spring 11.Described upper clip arm 3 and described lower clip arm 2 backs are provided with groove 7, and two legs of torque spring 11 compress respectively upper clip arm 3 and described lower clip arm 2.Groove 7 bottom surfaces are provided with lug boss 71, lug boss 71 described in the leg snapping of described torque spring 11.

On described upper clip arm 3 and described lower clip arm 2, be respectively equipped with the first recess 31 and second recess 21 of mutual correspondence, described the first recess 31 and described the second recess 21 form forced section, in described forced section, be provided with two drive rods 4, the first recess 31 and described the second recess 21 described in described drive rod 4 difference butts, described drive rod 4 drives and connects external pneumatic mechanisms.A described upper clip arm 3 and described lower clip arm 2 side front end is in correspondence with each other provided with the broached-tooth design for increasing friction force.

In working order, upper clip arm 3 and lower clip arm 2 are acted on mutually by torque spring 11 to be adjacent to, and while if desired clamping object, pneumatic mechanism first drives drive rod 4 to move, thereby drive rod 4 drives the separately convenient clamping of upper clip arm 3 and lower clip arm 2; Pneumatic mechanism

As the further optimization to the present embodiment, for preventing that fixture from becoming the unstable situation of the lax clamping causing because torque spring 11 works long hours in clamping, on described upper clip arm 3 and described lower clip arm 2, be respectively equipped with corresponding through hole, in described through hole, run through and be provided with screw rod 5.On described screw rod 5, be arranged with locking nut 6.In the time that fixture clamps object, in order to make fixture keep the state clamping, screw rod 5 is passed to through hole and utilizes locking nut 6 to lock the clamped condition that ensures fixture, prevent that fixture from occurring lax.

Pass through such scheme, utilize the normally closed property preservation upper clip arm 3 and lower clip arm 2 closures of torque spring 11, recycling drive rod 4 drives upper clip arm 3 to separate with lower clip arm 2, ensure that fixture can not cause wearing and tearing to reduce precision because staying open for a long time state, clamp tight and reasonable in design, open closing velocity fast.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a fixture, comprise: the upper clip arm being flexibly connected successively by axle and lower clip arm, on described axle, be arranged with torque spring, two legs of described torque spring compress respectively described upper clip arm and described lower clip arm, it is characterized in that: the first recess and the second recess that on described upper clip arm and described lower clip arm, are respectively equipped with mutual correspondence, described the first recess and described the second recess form forced section, in described forced section, be provided with two drive rods, the first recess and described the second recess described in described drive rod difference butt, described drive rod drives and connects external pneumatic mechanism.

2. a kind of fixture according to claim 1, is characterized in that: on described upper clip arm and described lower clip arm, be respectively equipped with corresponding through hole, in described through hole, run through and be provided with screw rod.

3. a kind of fixture according to claim 2, is characterized in that: on described screw rod, be arranged with locking nut.

4. a kind of fixture according to claim 1 and 2, is characterized in that: described upper clip arm and described lower clip arm back are provided with groove, and groove floor is provided with lug boss, lug boss described in the leg snapping of described torque spring.

5. a kind of fixture according to claim 3, is characterized in that: a described upper clip arm and described lower clip arm side front end is in correspondence with each other provided with broached-tooth design.