CN201979254U

CN201979254U - Spot welding locking plier

Info

Publication number: CN201979254U
Application number: CN2011200887939U
Authority: CN
Inventors: 李军
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-30
Filing date: 2011-03-30
Publication date: 2011-09-21
Anticipated expiration: 2021-03-30

Abstract

A spot welding locking plier belongs to a processing tool and comprises an upper plier arm and a lower plier arm, wherein the head of the upper plier arm is fixedly connected with an upper plier nose; the head of the upper plier arm below the upper plier nose is hinged with a lower plier nose; and the other end of the lower plier nose is hinged with one end of the lower plier arm. A movable rod is hinged in the middle part of the lower plier arm; the middle part of the movable rod is protruded downwards; and the other end of the movable rod is arranged inside the upper plier arm. A tension spring is arranged between the middle part of the lower plier nose and the internal middle part of the upper plier arm. A regulation bolt is arranged at the tail of the upper plier arm and is propped against one end of the movable rod inside the upper plier arm. The tail part of the lower plier arm is hinged with a compressing rod; and one end of the compression rod is arranged below a bulge on the lower part of the movable rod. A stop block is fixedly arranged behind the hinged part of the lower plier nose inside the upper plier arm. An upper flat copper clamping block is hinged at the end part of the upper plier nose. The end part of the lower plier nose is fixedly connected with a lower clamping block. The spot welding locking plier has a big clamping force and is easy to operate.

Description

The spot welding locking pliers

Technical field

The utility model belongs to a kind of machining tool, is specifically related to a kind of locking pliers of clamping.

Background technology

Be used for holding workpiece at present and carry out the pliers that the common tool of spot welding processing is a lever principle of utilization such as tiger pincers, when holding workpiece is carried out spot welding, owing to directly have an effect by people's hand, be directly conducted to workpiece by a lever, cause clamping force less, clamped workpiece is got loose, and operation effort and clamping effect are bad.

Summary of the invention

The purpose of this utility model is: provide a kind of clamping force that is used for spot welding big and operate locking pliers easily.

The purpose of this utility model is achieved in that the spot welding locking pliers, comprise tong arm and following tong arm, the fixedly connected pincers of going up of the head of last tong arm are chewed, being positioned at pincers chews the head of last tong arm of below and is hinged down to clamp and chews, the other end that following pincers are chewed is hinged with an end of following tong arm, the middle part of following tong arm is hinged a motion bar, protrude downwards at the middle part of motion bar, the other end of motion bar is arranged in the tong arm, between the middle part that described pincers are down chewed and the middle part of last tong arm inboard extension spring is set, the described afterbody of going up tong arm is provided with the adjusting bolt, and make the adjusting bolt prop up an end of the motion bar in the tong arm, the described afterbody of tong arm down is hinged a depression bar, and an end of depression bar is arranged on the below at protrusion place, described motion bar bottom, clamps the rear of chewing the place of being hinged in the last tong arm down and fixedly installs a block; The end that described upward pincers are chewed is hinged a copper flat upper clamping block, the fixedly connected following clamp in end that described pincers are down chewed.

The utility model is owing to there is motion bar to be connected between tong arm and the following tong arm, constituted the secondary lever, when holding workpiece, only need very little power workpiece can be clamped, last pincers are chewed and are hinged the copper flat compact heap of going up, following pincers are chewed and are fixedly installed down compact heap, caught workpiece can be clamped firmly, and copper compact heap is that workpiece and compact heap are welded together when preventing electric welding; Depression bar on the following tong arm is used to provoke the protrusion place of motion bar, two pincers is chewed opened; The effect of extension spring is when two pincers are chewed clamping, make it the clamping force that keeps certain, regulate bolt and be used to regulate motion bar in the position in last tong arm, the opening and closing degree that pincers are chewed changes, can adapt to different workpiece processing requests, the effect of block is to chew when opening at following pincers, props up down to clamp and chews, and prevents from excessively to open.

In sum, the big and operation of the utility model clamping force easily.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model.

The specific embodiment

As figure, as shown in Figure 1, straight shape of the mouth as one speaks locking pliers, comprise tong arm 5 and following tong arm 3, the fixedly connected pincers of going up of the head of last tong arm 5 chew 8, being positioned at pincers chews the head of last tong arm 5 of 8 belows and is hinged down to clamp and chews 9, the end that following pincers are chewed 9 the other end and following tong arm 3 is hinged, the middle part of following tong arm 3 is hinged a motion bar 4, protrude downwards at the middle part of motion bar 4, the other end of motion bar 4 is arranged in the tong arm 5, and following pincers are chewed between the middle part of 9 middle part and last tong arm 5 inboards extension spring 6 is set, and the afterbody of last tong arm 5 is provided with adjusting bolt 1, and make adjusting bolt 1 prop up an end of the motion bar 4 in the tong arm 5, the afterbody of following tong arm 3 is hinged a depression bar 2, and an end of depression bar 2 is arranged on the below at protrusion place, motion bar 4 bottom, clamps the rear of chewing 9 places of being hinged in the last tong arm 5 down and fixedly installs a block 7; Last pincers are chewed 8 end and are hinged a copper flat upper clamping block 11, and following the pincers chewed 9 the fixedly connected following clamp 10 in end.

Claims

1. spot welding locking pliers, it is characterized in that: comprise tong arm and following tong arm, the fixedly connected pincers of going up of the head of last tong arm are chewed, being positioned at pincers chews the head of last tong arm of below and is hinged down to clamp and chews, the other end that following pincers are chewed is hinged with an end of following tong arm, the middle part of following tong arm is hinged a motion bar, protrude downwards at the middle part of motion bar, the other end of motion bar is arranged in the tong arm, between the middle part that described pincers are down chewed and the middle part of last tong arm inboard extension spring is set, the described afterbody of going up tong arm is provided with the adjusting bolt, and make the adjusting bolt prop up an end of the motion bar in the tong arm, the described afterbody of tong arm down is hinged a depression bar, and an end of depression bar is arranged on the below at protrusion place, described motion bar bottom, clamps the rear of chewing the place of being hinged in the last tong arm down and fixedly installs a block; The end that described upward pincers are chewed is hinged a copper flat upper clamping block, the fixedly connected following clamp in end that described pincers are down chewed.