CN2076108U

CN2076108U - Clamp for electric plating

Info

Publication number: CN2076108U
Application number: CN 90213693
Authority: CN
Inventors: 刘树博
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-08-14
Filing date: 1990-08-14
Publication date: 1991-05-01

Abstract

The utility model provides a clamping device for electroplating. Nonmetallic or metallic two clamping heads are adopted by the clamping device for electroplating, anti-corrosive insulation layers are coated on the outside of the metallic clamping heads, and contact rods are arranged between the clamping heads and a body rod. The contact rods of the nonmetallic clamping heads are fixedly connected with current connection tabs, the current connection tabs of the metallic clamping heads are directly and fixedly connected to the clamping heads, so not only the two clamping heads are provided with anti-corrosive insulation property, but also the extra power expenditure and the consumption of the effective constituents in the chemical pretreatment solution caused by electric conduction of the clamping heads in the process of electrochemical treatment are decreased. The service life of the clamping device for electroplating is accordingly enhanced for a changeable fixed connection mode is adopted by the current connection tabs which are easy to be destroyed.

Description

Clamp for electric plating

The utility model relates to a kind of anchor clamps of clamping plating tank medium section.

In the metal finishing industry, form protection against oxidation layer or painted purpose for reaching workpiece surface now, its major part is clipped in it on main body bar of uniform anchor clamps carries out pickling, alkali cleaning and electrochemical treatment.At present, because the anchor clamps material on the main body bar is identical with the material of handling part mostly, therefore, when handling section bar or workpiece, its anchor clamps itself are also processed.Like this, not only power consumption extraly and consume effective ingredient in the treatment solution of anchor clamps, and also its anchor clamps itself also are subjected to heavy corrosion in strong acid, alkaline treating processes, so the present employed metal fixture life-span is very low.

The purpose of this utility model provides a kind of improved plating anchor clamps, it is not only minimized the conductive area of anchor clamps itself, but also increased against corrosion and insulating property on the metal fixture surface that does not need to conduct electricity, thereby reduced consumption, improved the work-ing life of anchor clamps.

The purpose of this utility model is achieved in that these anchor clamps still continue to use existing tiger formula anchor clamps, and the top that it is included in anchor clamps has securing bolt and has the standing bolt that connects with the main body bar at the sidepiece of chuck.The chuck of these anchor clamps adopts two kinds of materials, a kind of is nonmetal, another kind is a metal, and different because of material difference structure, their characteristics are: be provided with a current conducting rod between main body bar and nonmetal chuck, insert in the jack of main body bar at the rear portion of current conducting rod, the front portion of current conducting rod then is located in the chuck, and the current conducting rod front end in being located at chuck, just below corresponding securing bolt, affixed a conductive contact.Therefore, the electric current on the main body bar can only be by current conducting rod and conductive contact and processed workpiece conducting.

And between the chuck that main body bar and metal material are manufactured, also be provided with a current conducting rod, and same, an end of current conducting rod inserts in the main body bar, and the other end then is located in the chuck.For defective against corrosion and that avoid whole chuck all to conduct electricity, all scribble anti-corrosion insulating layer in the chuck entire exterior surface.An affixed conduction is started to exchange fire on the chuck below corresponding securing bolt.Because metal collet has conductivity, therefore, the current conducting rod in the metal collet is not only than nonmetallic weak point, and conductive contact also needn't be fixed in the effect that also can reach the conducting electric current on the current conducting rod.

Narrate concrete structure of the present utility model with reference to the accompanying drawings.

Fig. 1 is non-metal fixture and the synoptic diagram that connects of main body bar.

Fig. 2 is the current conducting rod in the non-metal collet and the affixed synoptic diagram of conductive contact.

Fig. 3 is the current conducting rod and the affixed synoptic diagram of conductive contact of being with the glue bowl in the non-metal collet.

Fig. 4 is the current conducting rod in the metal collet and the structural representation of conductive contact.

Fig. 5 is a metal collet structure iron of making conductive contact of Graphite Electrodes.

Fig. 6 is the conductive contact and the affixed synoptic diagram of metal collet of band glue bowl.

Fig. 7 utilizes standing bolt and conduction catch and the affixed synoptic diagram of metal collet.

Shown in Figure 1 is non-metal fixture, and it comprises the chuck 1 of tiger shape, and chuck 1 is provided with the securing bolt 2 that is used for clamping or holds out against metal to be treated spare, and chuck 1 is connected in standing bolt 4 on the main body bar 3.Above-mentioned chuck 1,

bolt

2 and 4 all belong to nonmetal, and this non-metallic material comprises: epoxy glass fabric, rigid polyvinyl chloride or hard tetrafluoroethylene.Because the main body bar of being manufactured by metal 3 not only plays a part to support in electrochemical treatment process, connecting clamp, also have concurrently simultaneously to anchor clamps and by the effect of anchor clamps to the processed workpiece conduction, therefore, between main body bar 3 and nonmetal chuck 1, be provided with a metal conductive bar 5.Insert in the jack of main body bar 3 at the rear portion of current conducting rod 5, and the front portion of current conducting rod 5 then is located in the chuck 1, the front end that inserts the current conducting rod 5 in the chuck 1 extend to securing bolt 2 pairing below, and affixed with screw thread conductive contact 6 in the above.Conductive contact 6 is actually the screw of nut band cambered surface, and this helps and the contacting of processed workpiece.In order to split the bottom of chuck 1 in the tightr and unlikely top that current conducting rod 5 is contacted with main body bar 3, thus thrust retaining 7 on current conducting rod 5, be provided with, and between main body bar 3 and chuck 1, be provided with and not only seal but also strengthen elastic rubber cushion 8.

Fig. 2 is identical with the basic structure of Fig. 1, just current conducting rod 5 is different with the affixed mode of conductive contact, conductive contact 9 among Fig. 2 is to utilize screw 10 to pass current conducting rod 5 from the bottom of chuck 1 up to tighten, conductive contact 9 just is equivalent to the nut of a band cambered surface, and seals with plug 11 at the nut countersunk head place of screw 10.Unique difference of Fig. 3 and Fig. 1 is that conductive contact 6 outer rings are provided with a glue bowl 12 that shields in Fig. 1.

The basic structure of Fig. 4-6 is identical with Fig. 1-3, and different is: because the chuck 1 of Fig. 4-6 is metal (comprising aluminium, copper and titanium), their chuck 1 appearance all applies anti-corrosion insulating layer 13.Insulation layer 13 can adopt epoxy coating, furane resin coating or polyvinyl chloride coating.Another difference of Fig. 4-6 is: current conducting rod 14 does not directly contact with separately conductive contact, and it has made full use of the electroconductibility of metal collet 1, so conductive contact all directly is fixed on the chuck 1.For example Fig. 4 conductive contact 15 is that the screw of a nut band cambered surface directly is screwed on the chuck 1.Fig. 5 joint 16 can also be a graphite, and it is that the working face of graphite joint 16 is made truncated cone-shaped or cylindrical, establishes one and cross open-work on the cylinder of joint bottom, then with on the chuck 1 that is fixed after tin liquor 17 perfusions.Fig. 6 is similar to the conductive contact of Fig. 3, and its unique difference is: the joint 18 in glue bowl 12 is the truncated cone-shaped nut.

The chuck 1 of Fig. 7 also is a metal, and its principal character is not establish current conducting rod, but utilizes standing bolt 4 conductions.Between naked of the metal of main body bar 3 and chuck 1, be provided with metallic conduction catch 19, and catch 19 outer rings are again with 20 sealings of insulation rubber cushion.Like this, if the nut of bolt 4 is coated with insulation layer, and add insulating mat 21 again between nut and main body bar, and make the screw that connects with standing bolt 4 on the chuck 1 become half hole (or claiming the semitight hole), whole anchor clamps can not conduct electricity except that conductive contact 15.

Nonmetal or metal is coated with protective layer outward and sets up enclosed current conducting rod the utility model because of chuck adopts, not only improved the antiseptic property of anchor clamps, and other surfaces are all non-conductive except that conductive contact, thereby reduced power consumption and reduced the waste of effective ingredient in the chemical pretreatment solution.Because the conductive contact of anchor clamps rapid wear part adopts the affixed mode of separation member, so change work-ing life simple and easy and that can correspondingly improve anchor clamps.

Claims

1, a kind of plating anchor clamps that are fixed on the main body bar are to be made of securing bolt on chuck and the chuck and standing bolt, it is characterized in that: between main body bar and nonmetal chuck, be provided with a current conducting rod, insert in the main body bar at the rear portion of current conducting rod, anterior then be located in the chuck and an affixed conductive contact below its front end correspondence securing bolt.

2, a kind of plating anchor clamps that are fixed on the main body bar are to be made of securing bolt on chuck and the chuck and standing bolt, it is characterized in that: between main body bar and metal collet, be provided with a current conducting rod, one end of current conducting rod inserts in the main body bar, the other end then inserts in the chuck, whole jaw face scribbles anti-corrosion insulating layer, an affixed conductive contact on the chuck below corresponding securing bolt.

3, plating anchor clamps according to claim 1 is characterized in that: nonmetal chuck material comprises: epoxy glass fabric, rigid polyvinyl chloride or hard tetrafluoroethylene.

4, plating anchor clamps according to claim 2 is characterized in that: the metal collet surface scribbles anti-corrosion insulating layer and comprises: epoxy coating, furane resin coating or pvc coating.

5, plating anchor clamps according to claim 1 and 2 is characterized in that: conductive contact is the screw of nut band cambered surface or the nut of band cambered surface.

6, plating anchor clamps according to claim 5 is characterized in that: establish the glue bowl in the conductive contact outer ring.

7, plating anchor clamps according to claim 2 is characterized in that: be provided with the metallic conduction catch between naked of the metal of main body bar and chuck, the catch outer ring is sealed the insulation rubber cushion again, and the screw that connects with standing bolt on the chuck is half hole.

8, plating anchor clamps according to claim 1 is characterized in that: joint can also be a graphite, and the working face of graphite joint is made truncated cone-shaped or cylindrical.