CN205996371U - Thermocouple welding gripper clamp - Google Patents

Abstract

A kind of thermocouple welding gripper clamp disclosed in the utility model, it is desirable to provide a kind of contact resistance is less, thermocouple wire is difficult the thermocouple welding gripper clamp of landing.The utility model is achieved by following technical proposals：It is formed with the lower planes that the opening and closing of jaw (2) is healed up vertically described jaw (2), the spaced straight line line semicircle that is parallel to each other is pre- indent (4), and straight line line semicircle pre- indent (4) width is the diameter of thermocouple wire.Thermocouple wire is closely embedded in the semicircle notch of pre- indent by the utility model using less pre-stamped decorative pattern radius on the lower planes that heal up of opening and closing of jaw.Due to being pre- indent for semicircle, after jaw closure, thermocouple wire is closely pressed on jaw so that thermocouple wire can be fixed by the pre- indent.Thermocouple wire can closely be embedded into reserved notch.Thermocouple gripper clamp is bigger than the chucking power of common flat-nose pliers to the chucking power of thermocouple wire, and thermocouple wire is difficultly slipped off, and facilitates welding.

Description

Thermocouple welding gripper clamp

Technical field

The utility model is related to a kind of clamping fixture used by welding thermocouple.As for, for most of thermocouples Bonding machine, the fixture are also to constitute circuit loop part used by thermocouple welding.

Background technology

Thermocouple is the temperature-sensing element that commonly uses in temp measuring system.It has temperature signal is converted to electric signal, its Simple structure, thermal inertia are little, high precision, the advantages of be easy to signal teletransmission.Thermocouple often needs to be welded, currently used for welding Capital equipment be arc welder, it be using electric capacity charge after then discharged, short circuit closure abrupt release Electric current, produces amount of localized heat using high current through the contact of thermocouple both threads rope composition, reaches fusing thermocouple wire and lead Line is welded.Its circuit structure diagram is as shown in Figure 2.Concrete operating principle is：Thermocouple is treated that welding end parallel clamp is held, bare terminal end Power-supply device positive pole is accessed, separately use carbon-point or carbon block as the negative pole for connecting power supply, during welding, carbon-point or carbon block and thermocouple The end in contact starting the arc to be welded moment generation high heat, realize welding.The utility model is mainly for the type thermocouple welding machine, city The Hotspot bonding machine of typical such bonding machine such as Mei Gou DDC company on field.Used due to most thermocouple welding machines Gripper clamp is that commercially available general flat-nose pliers power-up pole repacking comes, and its reserved clamping inter-ridge distance is excessive, and direction is typically put down Row is in jaw direction, and thermocouple wire is generally perpendicular to lines when welding, and its contact area diminishes, and then may result in contact electricity Resistive is big, or chucking power is not enough, thermocouple get loose from gripper clamp or, contact resistance becomes big, welding failure.Simultaneously because Common flat-nose pliers tolerance is larger, and for tiny filiform is clamped, chucking power substantially not enough, easily gets loose.Some bonding machines are adopted Jumper pincers, equally exist precompressed lines and conventional welding direction is not inconsistent, tolerance is big problem.

Content of the invention

The utility model is the weak point for overcoming thermocouple gripper clamp in existing welder, provides a kind of contact resistance Less, thermocouple wire is difficult the thermocouple welding gripper clamp of landing.

The utility model solves the technical scheme adopted by its technical problem, a kind of thermocouple welding gripper clamp, a kind of Thermocouple welding gripper clamp, with one and cutting pliers shape identical caliper 3, it is characterised in that heal up in the opening and closing of jaw 2 Lower planes on be formed with the vertically jaw 2, be parallel to each other the pre- indent 4 of spaced straight line line semicircle, straight line line semicircle 4 width of pre- indent is the diameter of thermocouple wire.

The utility model compares existing having the advantages that：

Contact resistance is less.The utility model is using less pre-stamped flower on the lower planes that heal up of opening and closing of jaw Line radius, thermocouple wire is closely embedded in the semicircle notch of pre- indent.Due to being pre- indent for semicircle, jaw is closed Thermocouple wire is closely pressed on jaw afterwards so that thermocouple wire can be fixed by the pre- indent.Gripper clamp jaw is closed, heat Galvanic couple line will have half and be exposed in jaw plane, and after closure jaw, held tight is lived thermocouple wire by first half jaw, contact Closely, good so as to ensure that contact, at the same also ensure that thermocouple wire will not the landing from jaw, this reduces and connect Get an electric shock and hinder, larger resistance will not be formed on pliers with thermocouple wire, would not also cause these places by white during high current White consumption discharge current, causes thermocouple head end to be welded to generate heat not enough, so as to cause welding failure.

Thermocouple wire is difficult landing., due to adopting less pre-stamped decorative pattern radius, thermocouple wire can for the utility model Closely it is embedded into reserved notch.Thermocouple gripper clamp to the chucking power of thermocouple wire than common flat-nose pliers chucking power more Greatly, thermocouple wire is difficultly slipped off, and facilitates welding.

Description of the drawings

Fig. 1 is the organigram of the utility model thermocouple welding gripper clamp.

The circuit theory schematic diagram of the current electronics thermocouple bonding machine of Fig. 2.

Specific embodiment

The utility model is referred to following examples and is achieved.

With reference to Fig. 1.A kind of thermocouple welding gripper clamp, with one and cutting pliers shape identical caliper 3.In jaw 2 The lower planes that heal up of opening and closing on be formed with the vertically jaw 2, be parallel to each other the pre- indent 4 of spaced straight line line semicircle, Pre- 4 width of indent of straight line line semicircle is the diameter of thermocouple wire.The pre- indent 4 of straight line line semicircle is 0.3mm-0.6mm.Thermocouple is welded Connect gripper clamp to be made up of the caliper 3 for connecting clamp holder 1.Pre-stamped notch 4 can be movable within the specific limits, can adhere to pincers Object at mouthful.Thermocouple wire passes through the pre- indent 4 of pre-stamped straight line line semicircle and is fixed in notch.Closure jaw 2, thermocouple Line tightly will be suppressed in notch.Having reached increases compression area reduction contact resistance while placing the problem got loose during welding.

Claims (4)

1. a kind of thermocouple welding gripper clamp, with one with cutting pliers shape identical caliper, it is characterised in that in jaw (2) it is formed with vertically described jaw (2) on the lower planes that opening and closing is healed up, be parallel to each other spaced straight line line semicircle precompressed Groove (4), straight line line semicircle pre- indent (4) width are the diameter of thermocouple wire.

2. thermocouple welding gripper clamp as claimed in claim 1, it is characterised in that：The diameter of the pre- indent of straight line line semicircle (4) For 0.3mm-0.6mm.

3. thermocouple welding gripper clamp as claimed in claim 1, it is characterised in that：Thermocouple welding gripper clamp is by connection clamp handle The caliper (3) of hand (1) is constituted.

4. thermocouple welding gripper clamp as claimed in claim 1, it is characterised in that：Thermocouple wire passes through pre-stamped straight line line The pre- indent of semicircle (4) is fixed in notch.