CN201442145U

CN201442145U - Plate spring type welding clamp

Info

Publication number: CN201442145U
Application number: CN2009200145984U
Authority: CN
Inventors: 范垂顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-16
Filing date: 2009-06-16
Publication date: 2010-04-28
Anticipated expiration: 2019-06-16

Abstract

A plate spring type welding clamp utilizing a plate spring to replace a traditional steelwire cylindrical compression spring radically solves the problem that the handle of the prior welding clamp is hot after continuous welding through adopting unique structure. The plate spring type welding clamp comprises a handle assembly and a lower insulator assembly, and adopts the technical points that a plate spring is arranged on the lower insulator in the lower insulator assembly; the plate spring is fixedly connected with the connecting frame and the support frame of the lower insulator; a spring lift rack provided with a spring lift shaft and a connecting shaft is arranged on the inner wall of an upper insulator on the handle assembly; the support frame is hinged with the connecting shaft; and the other end of the plate spring is connected with the spring lift shaft of the spring lift rack on the upper insulator. By adopting the unique structure, the plate spring type welding clamp has reasonable design, reduces the length of the electric conductors of the lower gripping head, remarkably saves the electric conductors, reduces the manufacturing cost, prolongs the service life, avoids hot handle after continuous welding, and improves the working performance.

Description

Plate spring type welding clamp

Technical field

The utility model relates to a kind of arc-welding apparatus that is used for the alternating current-direct current continuous welding, the plate spring type welding clamp of handle non-scald on hand during that particularly a kind of steel wire column type compression spring that replaces traditional structure with leaf spring obtains the welding rod chucking power and continuous welding.

Background technology

At present, the chucking power of electrode holders clamping welding rod is compressed spring from the steel wire column type of traditional structure mostly both at home and abroad, be that the lower clamp nozzle that is connected with cable on the lower insulator that links of the handle insulator of the upper clamp nozzle of electrode holders control rod assembly and handle assembly is to compress the clamping welding rod with the compression spring, after using a period of time, the welding rod chucking power can obviously weaken along with the elastic fatigue of steel wire column type compression spring, cause the chucking power deficiency of welding rod, directly influence weld job.Meanwhile, upper and lower jaw and welding rod loose contact also can cause contact resistance to increase, and burn red discard electrode, and consequent heat just is transmitted on the handle insulator by lower insulator and cable.In addition, because of the joint of its lower clamp nozzle electric conductor and cable links together by lower insulator and handle insulator, not only heat very directly is transmitted on the handle insulator, and the strong point of compression spring is longer to the distance between the upper and lower jaw of clamping welding rod, also increased the length of lower clamp nozzle electric conductor, so this structure also makes the material cost of electric conductor strengthen, handle reaches hot temperature very soon when continuous welding.The improvement that the improvement of the existing electrode holders of cause rests on the draw bail of lower clamp nozzle electric conductor and cable adapter always designs, and this joint always is fixed on the lower insulator that links to each other with the handle insulator, the heat that the joint produces can directly promptly be transmitted on the handle insulator by lower insulator and cable, handle is scalded one's hand, so the problem of handle non-scald on hand can not fundamentally solve the electrode holders continuous welding time.

The applicant once designed laminated type electrode holders (the license notification number is CN100348356C) and Wedge type electrode holder (patent publication No. is CN101306489A) etc. at existing problem spiral, that the presser type electrode holders exist, tried hard to make electrode holders non-scald on hand when the continuous welding operation.Wherein the former laminated type electrode holders are to be upper and lower cable thigh with the share split of electric welding jaw cable, and link into an integrated entity with upper and lower jaw respectively.Its electric welding jaw cable adapter with connect the cable adapter of electric welding machine, utilize wire terminal protection body (iron pipe) to link together, but the cable adapter pressing is difficult to the tight and uniformity of maintenance when practical operation with the forcing press pressing and fixing.Though laminated type electrode holders cable adapter is under the just right situation of stamping press, the contact resistance of joint than spiral, the presser type electrode holders are little, if but stamping press is not in place, the contact resistance of joint increases thereupon, caloric value also just increases, and can form the phenomenon that the handle insulator scalds one's hand equally.If it is good that laminated type electrode holders cable adapter connects, stamping press is selected appropriate, and handle is to be difficult for scalding one's hand, and key is that the stamping press size is difficult to grasp apt.Because be subjected to the restriction of structural factor, the manufacturing cost of laminated type electrode holders also is higher than other electrode holders about 40%.And latter's Wedge type electrode holder comprises control rod assembly, wiring assembly and the handle assembly that fits together, it is cable closely to be pressed on the inclined-plane of lower clamp nozzle electric conductor by the wedge shape briquetting, make the cable adapter extruding closely, strengthen handle problem such as scald one's hand when the continuous welding operation with the contact resistance that tightly do not cause that solves because of joint cable line pressure.Although taked some provision for thermal insulations, because of joint and lower insulator and the handle insulator or the integral structure of its cable and lower clamp nozzle electric conductor, the heat that can't thoroughly cut off the thermal source generation conducts on the handle insulator.

The utility model content

The purpose of this utility model provides a kind of leaf spring that utilizes and replaces the plate spring type welding clamp that traditional steel wire column type compression spring constitutes unique texture, fundamentally solved the hot problem of handle that existing electrode holders continuous welding produces, it has internal structure and face shaping advantage all reasonable in design, can significantly save conductive material, reduce manufacturing cost, increase the service life, really do and accomplish the continuous welding non-scald on hand, improve operating efficiency.

The technical solution of the utility model is: this plate spring type welding clamp comprises handle assembly and lower insulator assembly, its technical essential is: on the lower insulator in the described lower insulator assembly leaf spring is set, the connection box and the carriage of described leaf spring and described lower insulator are mutually permanently connected together.

Upper insulator inwall setting in the described handle assembly is fixed with the spring support of lifting of lifting spring axle and coupling spindle, it is hinged to be arranged on the coupling spindle that described carriage on the described lower insulator and described upper insulator lift spring support, and the other end of the leaf spring on the described lower insulator is connected mutually with the spring axle of lifting of lifting spring support of described upper insulator.

What be arranged on that upper clamp nozzle on the described lower insulator is fixedly connected on described leaf spring lifts the end that the spring axle is connected mutually with described, be arranged on the electric conductor of the lower clamp nozzle on the described lower insulator and described leaf spring and described connection box and be fixed together, the relative pincers face of described upper and lower jaw is closely contacted.

Be arranged on the upper insulator handle pipe that links into an integrated entity of described handle assembly and the periphery of instlated tubular and coat the handle insulator, aluminium foil thermal resistance reflecting drum is set in interior week.

The inwall of the lower insulator of described lower insulator assembly is fixed with frame board, and the cable adapter that is arranged in the described lower insulator assembly closely is crimped on by the electric conductor that is arranged on the lower clamp nozzle of pressing plate in described connection box on the described frame board.

The inboard of lifting spring support that is arranged on described upper insulator inwall attaches aluminium foil thermal resistance reflecting layer.

Advantage of the present utility model and positive technique effect are: owing to the utlity model has internal structure and face shaping advantage all reasonable in design, the traditional steel wire column type compression spring of leaf spring replacement creatively is set on the lower insulator of lower insulator assembly obtains the welding rod chucking power, and the upper insulator of handle assembly and being fixed with between the lower insulator assembly of leaf spring, only hinged by the carriage of lifting coupling spindle on the spring support and lower insulator assembly of upper insulator, the spring axle of lifting that one end and the upper insulator of leaf spring lifted spring support is connected mutually, remove the hinged place of coupling spindle and carriage, outside lifting the spring axle and the joining place of leaf spring contacting, all the other positions disengagings do not contact, so the contact area between the lower insulator of the upper insulator of handle assembly and lower insulator assembly is very little, thereby form the barrier fracture belt of one intercept heat conduction.Therefore, the heat of the lower insulator of lower insulator assembly pass on the upper insulator of handle assembly heat seldom, these shortages of heat are so that handle insulator temperature is raised to hot degree, so fundamentally solved the hot problem of handle that existing electrode holders continuous welding produces.When continuous welding, although the lower insulator temperature of the lower insulator assembly that is intercepted by fracture belt may reach hot temperature, but when weld job changes welding rod, just handle is pressed to motionless lower insulator, the spring of lifting that leaf spring end that upper clamp nozzle is housed is lifted on the spring support along with upper insulator lifts on axially, and allowing upper and lower jaw open is interchangeable welding rod.Owing to change welding rod and finish, so can't feel hot in moment.Because of having used leaf spring, great changes will take place for the electrode holders internal structure, jaw, joint, leaf spring are integrated dexterously, the leaf spring strong point is shortened greatly to the distance between jaw, so the electric conductor length of lower clamp nozzle also shortens thereupon, conductive material than spiral electrode holders saves 2/5, save 3/5-4/5 than the presser type electrode holders, therefore can significantly save conductive material, reduce manufacturing cost, increase the service life, really do and accomplish the continuous welding non-scald on hand, improve operating efficiency.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a kind of concrete structure schematic diagram of the present utility model.

Fig. 2 is that the A of Fig. 1 is to view.

Fig. 3 is the generalized section of Fig. 2 along the B-B line.

Fig. 4 is the generalized section of Fig. 1 along the C-C line.

Fig. 5 is the generalized section of Fig. 1 along the D-D line.

Fig. 6 is the generalized section of Fig. 1 along the E-E line.

Fig. 7 is a kind of concrete structure schematic diagram of leaf spring.

Fig. 8 is the generalized section of Fig. 7 along the F-F line.

Fig. 9 is the schematic diagram of the fracture belt between handle assembly and lower insulator assembly.

Sequence number explanation among the figure: 1 upper clamp nozzle; 2 screws; 3 packing rings; 4 lift the spring axle; 5 leaf springs; 6 aluminium foil thermal resistance reflecting layer; 7 coupling spindles; 8 carriages; 9 screws; 10 screws; 11 lift spring support; 12 upper insulators; 13 handle insulators; 14 instlated tubulars; 15 aluminium foil thermal resistance reflecting drums; 16 cables; 17 screws; 18 screws; 19 frame boards; 20 lower insulators; 21 screws; 22 screws; 23 pressing plates; 24 connection boxes; 25 lower clamp nozzles; 26 screws; 27 times refractory protections; refractory protection on 28; 29 fracture belts.

The specific embodiment

Describe concrete structure of the present utility model in detail according to Fig. 1-9, this plate spring type welding clamp comprises handle assembly and lower insulator assembly.Wherein handle assembly comprises handle insulator 13, instlated tubular 14, aluminium foil thermal resistance reflecting drum 15, upper insulator 12, coupling spindle 7, lifts spring axle 4, lifts spring support 11, aluminium foil thermal resistance reflecting layer 6, screw 9,17, goes up part such as heatproof protective layer 28.The lower insulator assembly comprises upper clamp nozzle 1, leaf spring 5, carriage 8, cable 16, pressing plate 23, lower insulator 20, packing ring 3, screw 2,26,22,21,18, frame board 19, connection box 24, lower clamp nozzle 25, following heatproof protective layer 27 parts such as grade.

Lift spring support 11 what the inwall of the upper insulator 12 of handle assembly utilized screw 9 fixedly to be equipped with to lift spring axle 4 and coupling spindle 7.In order to reduce, lifting the spring support 11 inboard aluminium foil thermal resistance reflecting layer 6 that attach to lifting the radiations heat energy conduction of spring support 11.Coat handle insulator 13 at the handle pipe of the upper insulator that links into an integrated entity 12 of handle assembly and the periphery of instlated tubular 14, and utilize screw 17 to carry out axially or circumferentially spacing fixing.The handle pipe of upper insulator 12 and instlated tubular 14 aluminium foil thermal resistance reflecting drum 15 is set in interior week, to form the multilayer insulation barrier, further strengthen effect of heat insulation to handle.

Lower insulator 20 is arranged in the lower insulator assembly, and the inwall of lower insulator 20 utilizes screw 26,21,18 to be fixed with the frame board 19 that matches with lower insulator 20 inner wall shape, is fixed with connection box 24 on the frame board 19.Leaf spring 5 and carriage 8 thereof are set on the lower insulator of lower insulator assembly.The structure of leaf spring 5 both can adopt split-type structural, as adopting the structure (shown in Fig. 1,5) fixedly connected with connection box 24 and carriage 8 respectively, or adopt with leaf spring 5 directly with make the connection box 24 of one and the structure (not shown) that carriage 8 is fixed together; Also can adopt monolithic construction, as adopting leaf spring 5 and connection box 24 are made the structure that one is fixed together with carriage 8 again, or adopt leaf spring 5 and carriage 8 made the structure that one is fixed together with connection box 24 again, or adopt with leaf spring 5 directly and connection box 24 and carriage 8 make the structure (not shown) of one.Present embodiment adopts split-type structural, and the leaf spring 5 that promptly is arranged on the lower insulator utilizes screw 10 to be fixed together with connection box 24 and carriage 8.Carriage 8 by coupling spindle 7 with to lift spring support 11 hinged.The other end of leaf spring 5 is connected mutually with the spring axle of lifting on the spring support 11 4 of lifting of upper insulator 12.Upper and lower jaw 1,25 all is arranged on the lower insulator of lower insulator assembly.Upper clamp nozzle 1 is fixedly connected on leaf spring 5 with screw 2, packing ring 3 with lift the ends that spring axle 4 is connected mutually, the electric conductor and the leaf spring 5 of lower clamp nozzle 25 are fixed on the connection box 24, utilize the active force of leaf spring 5 that the relative pincers face of upper and lower jaw 1,25 is closely contacted.Because of leaf spring 5 active forces are big, so it is solid that electrode carrier is kept steady, help weld job, also obviously to eliminate simultaneously because of jaw and welding rod loose contact, contact resistance increases the heat that is produced.Because of the lower insulator assembly is suspended on the coupling spindle 7 by carriage 8, so maintain static when carriage 8, depress the upper insulator 12 of handle assembly, lift the leaf spring 5 that 4 drives of spring axle are connected with it and upwards lift, upper and lower jaw 1,25 is opened, so that change welding rod rapidly.Cable 16 joints that are arranged in the lower insulator assembly closely are crimped on by screw 22, the lower clamp nozzle electric conductor 25 of pressing plate 23 in connection box 24 that is arranged on the frame board, to reduce contact resistance, reduce caloric value.In addition, by instlated tubular 14, aluminium foil thermal resistance reflecting drum 15, aluminium foil thermal resistance reflecting layer 6 has also intercepted the heat conduction that the lower insulator assembly produces effectively, makes that in the handle assembly handle insulator 13 temperature do not reach hot degree, improves operating efficiency.For prolonging the service life of electrode holders, the upper and lower

heatproof overcoat

28,27 of overfiring-proof is set respectively on the upper and

lower insulator

12,20 in the upper and lower jaw outside.

Except hinged by coupling spindle 7 and carriage 8, have only leaf spring 5 to be connected with lifting between the spring axle 4 between handle assembly and the lower insulator assembly, other corresponding position does not all contact, and contacts the fracture belt 29 that conducts thereby form an intercept heat.Coupling spindle 7, lifting spring axle 4 all is with carriage 8 or leaf spring 5 in point or the line contact lower insulator assembly, therefore contact area is little, the lower insulator assembly is limited to the heat of handle assembly contact conduction, not enough so that across upper insulator 12, the temperature away from the handle insulator 13 of lower insulator 20 reaches hot degree again.The coupled axle 7 of lower insulator 20 contact conduction heats, to lift that spring axle 4 is transmitted on the upper insulator 12 be very little a part of heat, and the heat of most of contact conduction is blocked by a fracture belt 29 of 12,20 formation of upper and lower insulator.

When continuous welding, the operator is holding handle insulator 13 and is carrying out weld job, so non-scald on hand during the plate spring type welding clamp continuous welding improves operating efficiency.When changing welding rod, as long as handle insulator 13 is pressed to motionless lower insulator 20, an end that makes the leaf spring 5 that upper clamp nozzle 1 is housed makes upper and lower jaw 1,25 open promptly replaceable welding rod when lifting lifting spring axle 4 and upwards lift on the spring support 11.

Claims

1. plate spring type welding clamp, comprise handle assembly and lower insulator assembly, it is characterized in that: on the lower insulator in the described lower insulator assembly leaf spring is set, the connection box and the carriage of described leaf spring and described lower insulator are mutually permanently connected together.

2. plate spring type welding clamp according to claim 1, it is characterized in that: the upper insulator inwall setting in the described handle assembly is fixed with the spring support of lifting of lifting spring axle and coupling spindle, it is hinged to be arranged on the coupling spindle that described carriage on the described lower insulator and described upper insulator lift spring support, and the other end of the leaf spring on the described lower insulator is connected mutually with the spring axle of lifting of lifting spring support of described upper insulator.

3. plate spring type welding clamp according to claim 1 and 2, it is characterized in that: what be arranged on that upper clamp nozzle on the described lower insulator is fixedly connected on described leaf spring lifts the end that the spring axle is connected mutually with described, be arranged on the electric conductor of the lower clamp nozzle on the described lower insulator and described leaf spring and described connection box and be fixed together, the relative pincers face of described upper and lower jaw is closely contacted.

4. plate spring type welding clamp according to claim 1 is characterized in that: be arranged on the upper insulator handle pipe that links into an integrated entity of described handle assembly and the periphery of instlated tubular and coat the handle insulator, aluminium foil thermal resistance reflecting drum is set in interior week.

5. plate spring type welding clamp according to claim 1 and 2, it is characterized in that: the inwall of the lower insulator of described lower insulator assembly is fixed with frame board, and the cable adapter that is arranged in the described lower insulator assembly closely is crimped on by the electric conductor that is arranged on the lower clamp nozzle of pressing plate in described connection box on the described frame board.

6. plate spring type welding clamp according to claim 1 is characterized in that: the inboard of lifting spring support that is arranged on described upper insulator inwall attaches aluminium foil thermal resistance reflecting layer.