CN1185372C

CN1185372C - Conveyer for electroplating system

Info

Publication number: CN1185372C
Application number: CNB021278512A
Authority: CN
Inventors: 林绿竹
Original assignee: CEM MACHINE Pte Ltd
Current assignee: CEM MACHINE Pte Ltd
Priority date: 2002-05-22
Filing date: 2002-07-31
Publication date: 2005-01-19
Anticipated expiration: 2022-07-31
Also published as: MA25742A1; KR100536888B1; KR20030091658A; SG108297A1; MY143406A; CN1459519A

Abstract

A conveyer (1) for electroplating system, includes a plurality of clamping finger parts (2), in which free clamping end (3) leans against the conveyer (1), the clamping finger parts (2) are pivotably installed on the conveyer (1). A flexible part (4) such as torsional spring is connected the conveyer (1) with at least one clamping finger part (2) to make the free end (3) of the clamping finger part (2) lean against the conveyer (1), accordingly, a strip part can be clamped beween the conveyer (1) and the free end (3) of the clamping finger part (2).

Description

The e Foerderanlage of electroplating system

Technical field

The present invention relates to a kind of e Foerderanlage that is used for chemical processing system, relate in particular to being used to carry strip piece to carry out gripping unit chemical and that electrochemical treatment technology is particularly electroplated, use the endless belt of electric deburring technologies such as (electro-deflashing).

In the field that electronic component is handled, as everyone knows will be before use to electroplating from the outstanding lead-in wire of insulating encapsulated layer.The flat tooth that the shape of lead-in wire is generally the cylindrical metal line or goes out from sheet material.Regardless of the shape that goes between, all must electroplate it, for example electric plated with copper, tin or ferrous alloy so that corrosion prevention and mechanical protection are provided, and for example improve by wave soldering technology and with the interconnective quality of other parts.In the later case, when lead-in wire is made by ferrous alloy, common first sputtering of metals last layer copper, and then electroplate and go up tin or tin/lead alloy.

Background technology

Traditional electro-plating method as rack plating and barrel plating by method replace, in this method, part to be plated transmits on e Foerderanlage or conveying belt and passes through a series of treatment bench.

A kind of device that is used to electroplate the contact element of encapsulating electronic components is disclosed in U.S. Pat-A-4534843.Part to be plated is placed on the successive flexible delivery band of being made by electro-conductive material, and is transmitted and by a plurality of treatment benches that include main plating tank, and wherein conveying belt is as an electrode electroplating power supply system.Disclosed conveying belt comprises the Stainless Steel Band that moves along the loop of horizontal alignment and have the vertical band width of cloth (belt web).Part to be plated is fixed on tape in the finger of the lower edge of band by a ranking.Successive clamps finger and contacts with the part of opposite side.

The elastic clamp device of a kind of single-piece of cicada from European patent EP 0382283, the one end links to each other with the endless belt, and free pinching end leans against on the endless belt under the effect of himself elastic force.In the embodiment of EP 0382283, elastic spring pinchcock have from free end against a side extend through the part of band to opposite side.Be used for opening band in the loading and unloading position with part by on tape part opposition side on the spring pinchcock, this is by camming action, for example realizes with contacting of the motion-work wheel that has the endless belt.

Applicant of the present invention proposed to be used for the wire spring folder of strip piece in the past, shown in Figure 10 a and 10b.Clip 20 comprises wire, and it forms has extended two parallel arms in crooked middle body from then on wiry 22 places.The plane that is in close proximity to the part place of curved part 22 on curved part 22 and the arm becomes, thereby forms gripping portion.The end bent of each arm and form arm nose part 23, it engages with prop clip 20 with band 100.The arm of clip extends from its end, and forms the pitch of the laps 24 with a plurality of circles.Between each pitch of the laps 24 and curved part 22, each brachiocylloosis to be to form bonding part 25, is used to overcome the tension force of spring ring and these arms of bias voltage.Clip is supported on the conveying belt, and the part of its arm is substantially parallel with band.

Summary of the invention

An object of the present invention is to provide and a kind of strip piece is clamped in device on the e Foerderanlage.Specifically, an object of the present invention is to improve electrically contacting between conveying belt and the strip piece, thereby improve the efficient of electroplating technology.Another object of the present invention is the work-ing life of raising by the single clamping finger of the e Foerderanlage of a plurality of chemical treatment technologies.

The invention provides a kind of conveying belt that is used for electroplating system, it comprises: a plurality of being pivotally mounted on going up so that its free pinching end leans on clamping finger on tape; And the elastic component that links to each other and link to each other with at least one clamping finger with band, so that impel the described free end that clamps finger to lean on tape, like this, strip piece can be clipped in band and clamp between the free end of finger.Adopt elastic component to increase the clamping force of non-resilient clamping finger, cause with and strip piece between produced higher clamping force and better electrically contacted.

Elastic device can comprise torsion spring.Torsion spring pivotally is connected on described at least one clamping finger, and its turning axle is parallel to the plane and the longitudinal axes thereof of band.Elastic component and the free movement that clamps between the finger have reduced the strain on the elastic component, and this has just prolonged the life-span of elastic component.

At least one pivot pin can be set, be used to install at least one described clamping finger to carry out the pivot motion.Pivot pin can be installed in the made bracket (bracket) of material by band.Perhaps, at least one removably has been installed on tape insert is installed, it comprises the bracket that is used to install described pivot pin.Insert is installed is comprised that at least one is used for fixing the bracket of an end of described elastic device.

Comprise at e Foerderanlage under the situation of torsion spring that torsion spring can have a pitch of the laps and two and have the arm of end separately, torsion spring can be fixed near being with an of end of torsion spring, and is fixed on the clamping finger near the other end of torsion spring.Torsion spring can have the pitch of the laps that comprises at least one circle, and a surface of pitch of the laps and band is adjacent.

Torsion spring can be made by wire rod, comprises and clamps middle body that finger links to each other and from extended two arms of middle body, each arm includes pitch of the laps.

In one embodiment, single pivot pin supports a plurality of clamping fingers, and single wire rod has the part that links to each other with each described clamping finger and at least one pitch of the laps as torsion spring, with the free end that impels each described clamping finger by on tape.Also can be provided with two clamping fingers that are supported on the pivot pin, the arm of spring material is contained in the opening that respectively clamps finger, and the pitch of the laps of each arm is supported on the pivot pin.

The wire spring material can pass the bracket that respectively clamps on the finger, extend to the arm on each side that respectively clamps finger of pivot pin with formation, the pitch of the laps of each arm is formed at each side that respectively clamps finger herein, the bracket that is used for each wire spring material arm clamps finger and links to each other with each, the wire spring material passes its bracket separately and the next bracket that clamps finger, like this, the wire spring material has formed and has been used for the elastic device that each clamps finger.

Clamping finger can form by a part that is stamped out by band, has fixed an interfacing part on the edge of band, and the free end that clamps finger leans against on this edge.

In a second aspect of the present invention, the conveying belt that is used for electroplating system comprises a plurality of brackets that the clamping finger of strip piece, a plurality of sides that are positioned at band are used to hold the wire spring material that are used to clamp, and one or more brackets for each clamping finger setting, wherein, a wire spring material has formed described a plurality of clamping finger.

Can be and respectively clamp finger a pair of bracket is provided, in bracket, held the wire spring material.

The wire spring material can form and respectively clamps finger by forming two arms and curved part, and curved part has formed the free end by on tape.

Each arm that clamps finger can have as impelling described free end to lean on the pitch of the laps of torsion spring on tape.

Conveying belt can comprise the opening that is used for respectively clamping finger, and a side of the band of clamping finger above free end leans against is extended by opening.

Description of drawings

To and come at length to introduce the present invention with reference to the accompanying drawings by example below, in the accompanying drawings:

Fig. 1 a and 1b are respectively according to the side-view of the e Foerderanlage of first embodiment and front view;

Fig. 2 a and 2b are respectively according to the side-view of the e Foerderanlage of second embodiment and front view;

Fig. 3 a and 3b are respectively according to the side-view of the e Foerderanlage of the modification of second embodiment and front view;

Fig. 4 a and 4b are respectively according to the side-view of the e Foerderanlage of the 3rd embodiment and front view;

Fig. 5 is the skeleton view according to the front and rear of the e Foerderanlage of the 4th embodiment;

Fig. 6 is the side-view of the e Foerderanlage of the 4th embodiment;

Fig. 7 a and 7b are respectively according to the side-view of the e Foerderanlage of the 5th embodiment and front view;

Fig. 8 a and 8b are respectively according to the side-view of the e Foerderanlage of second aspect present invention and front view;

Fig. 9 a and 9b are respectively according to the side-view of the e Foerderanlage of second aspect present invention and front view;

Figure 10 a and 10b are respectively rear view and the side-views according to the clamping finger of prior art.

Embodiment

Fig. 1 a and 1b have shown the first embodiment of the present invention.With 1 is the stainless endless belt that is used for electroplating technology.Be looped around on follow-up pulley that vertical axis rotates and motion-work wheel (not shown) with 1 and move.Strip piece such as lead frame are clamped finger 2 with the solid stainless steel on 1 and vertically are supported in abreast with band and are with by a plurality of being supported on.The free end 3 that clamps finger 2 leans against the lower edge of band under the effect of the motivator of torsion spring 4.

Have from clamping the vertically extending slit 5 of finger 2 with 1 with each that stamps out.Supported installation insert 6 at top end with the opening on 1 the side.In the present embodiment, insert is installed is formed by from supporting with the installing tache 7 that stamps out, it is in place so that it is firmly fixed that the part that insert 6 is installed enters into installing tache 7.Insert 6 is installed is comprised butted part 8, the end of torsion spring 4 just leans against on the butted part 8.At the lower end that insert 6 is installed, the part that insert 6 is installed extends through slit 5 and has formed groove, and the upper limb of slit 5 is arranged in this groove.Insert 6 has formed pivot pin 10 on a side opposite with butted part 8 of band bracket 9 is installed.

Pivot pin 10 supports torsion spring 4 and clamps finger 2.Clamp finger 2 and have pivot flexure part (pivot curve) 11 or bracket, it is formed at the place, end that is supported by pivot pin 10.In pivot flexure part 11, accommodate pivot pin.The clamping finger 2 that pivotally is supported on the pivot pin 10 extends through pivot flexure part 11, and has formed the gripping portion 12 that has pinching end 3, makes that clamping finger 2 leans against with on 1 the lower rim, as shown in Figure 1a.

Torsion spring 4 is made by the wire spring material.Torsion spring 4 is contained in the bracket 13, and like this, the middle body of wire material leans against on the surface that clamps on the finger 2 with the clamping finger 2 of 1 an opposite side.Crooked steel wire material arm makes it extend back abreast by the opening that clamps finger 2 each side.The spring material arm has formed cam portion 14 from pinching end 12 at the opposite side with 1.At cam portion 14 places, arm is bent upwards towards pivot pin.Wire material is wrapped on the pivot pin 10, and is forming a plurality of circles on the both sides of pivot flexure part 11 and between bracket 9.The spring material arm extends through opening 5, and insert 6 is mutually concordant with installing, and its end is fixed in the steel wire bracket 8.

In use, the effect of gripping portion 12 by torsion spring 4 is pushed to and is with 1.Loading stage and relieving platform place at electroplating system are provided with the device that can apply reactive force to cam portion 14, are used to open the clamping finger.In general, when band centers on motion-work wheel and follow-up pulley operation, cam portion 14 will lean against on the part of motion-work wheel or follow-up pulley.

In this embodiment, it is dismountable that insert is installed, and therefore can integrally change clamp assembly if necessary.The bracket, pivot pin and the clamping finger 2 that are used for fixing torsion spring are connected on the bracket securely by clamping or spot welding.

Insert 6 is installed can any mode easily be installed in and be with on 1, and can have the end that several brackets rather than simple butted part 8 fix torsion spring 4.

Fig. 2 a and 2b have shown second embodiment.Clamp finger 2 and be not and forms by independent clamping finger but formed by a part with 1, with 1 this part from the material of being with, stamp out with formation slit 5.Formed by a part of of band owing to clamp finger, therefore the clamping finger 2 of second embodiment has not required pivot pin.From Fig. 2 a, can find out, clamp finger and be forced into, be bent then with outstanding and pass slit 5 backward with outside 1 the side.At last, crooked gripping portion, thus form gripping portion 12.The lower rim of removed band is substituted by the conductive metal band that forms butted part 1a when forming clamping finger 2.Gripping portion 12 is configured to make the free end 3 of gripping portion 12 to lean against on the butted part 1a of band.Adopt bracket 15 that wire spring 4 one ends are fixed on top with 1.Wire spring has formed pitch of the laps 16 below bracket.The remainder of wire spring 4 part along its length when it extends through slit 5 is concordant with clamping finger 2.Wire spring is fixed on by at least one bracket 17 that is formed by a part that clamps finger 2 and clamps on the finger.

Another design of second embodiment is shown in Fig. 3 a and 3b.Similar parts adopt identical label to represent.In Fig. 3 a and 3b, adopted the slightly different clamping finger of bigger disc spring and shape.In addition, wire spring extends through the opening that clamps in the finger 2, thus by bracket 17 be fixed on clamp on the finger 2 with 1 an opposite side.

Fig. 2 has different structures with 3 design on cam portion.In Fig. 2 a and 3a, must apply as shown by arrow F with the direction of opening the power that clamps finger 2.

Fig. 4 a and 4b relate to the third embodiment of the present invention.The 3rd embodiment is the modification of above-mentioned first and second embodiment.Clamp finger 2 and be similar to first embodiment, and torsion spring is similar with the torsion spring shown in the 3b to Fig. 3 a.By to suppress the bracket 9 that forms pivot pin with a part of 1.

Fig. 5 and 6 relates to the fourth embodiment of the present invention.

Fig. 5 represents the skeleton view according to the front and rear that conforms with scenography of band of the present invention.Pivot pin 10 is supported between the bracket 31.Pivot pin has supported close bracket 31 and has been positioned at the clamping finger 2 at the place, two ends of pivot pin 10.Pivot pin 10 passes the opening that clamps in the finger 2, is pivoted thereby can support clamping finger 2.Wire spring 4 has the middle body 33 that leans against with on 1, and two arms 34 that extend and form around pivot pin 10 two spring rings 35 towards pivot pin 10.Arm is from pivot pin extension and outwardly-bent in its end downwards, to be contained in the permanent opening 32 that clamps finger 2.

Fig. 6 is the illustrative side view that has shown two Fig. 5 that one of clamp in the finger 2.This embodiment comes work according to the principle identical with the embodiment of front.At loading stage and relieving platform place the cam portion 14 that clamps finger is applied effect, to open the clamping finger.

Fig. 7 a and 7b have shown the fifth embodiment of the present invention.

A plurality of clamping fingers 2 identical have been supported with 1 with first embodiment.By from being with punching press to form slit 5, thereby formed bracket 41.In the hole of bracket 41, be provided with pivot pin 10.Can find out that from Fig. 7 b single pivot pin 10 extends along the length with 1, and has supported a plurality of clamping fingers 2.Torsion spring 4 clamps finger 2 in the same manner as in the first embodiment on pivot pin 10 either side forms a plurality of pitch of the laps 42.The wire spring material of torsion spring 4 extends upward and passes the fixed orifices 43 in the bracket 41.The arm 44 of pitch of the laps steel wire passes the fixed orifices 43 of next bracket 41 along opposite direction, and continues to form the next torsion spring 4 that clamps finger 2.In this way, can a plurality of clamping fingers 2 be coupled together by a steel wire that forms each torsion spring 4 that respectively clamps finger 2.

Fig. 8 a and 8b represent a second aspect of the present invention.A torsion spring wire material forms a plurality of clamping fingers 50 can be provided.A plurality of installation inserts 51 are by being with on 1 by being fixed on 1 each bracket 52 that stamps out.Each is installed insert 51 and has two brackets 53, is used to hold the arm of wire spring material 54.Wire spring material 54 forms and can pass bracket 53 and enter in the pitch of the laps 55, and it forms for each bracket 53.The wire spring material extends through the slit 56 of lower rim near band, and is bent and forms and clamp finger 57.

Fig. 9 a and 9b have shown the side-view and the front view of another setting of second aspect present invention.Replace forming the torsion spring by pitch of the laps 55 (Fig. 8 a and 8b) except the arm that adopts the wire spring material forms leaf spring type elastic component 58, the setting of Fig. 9 a and 9b is similar to being provided with of Fig. 8 a and 8b.

Although embodiments of the invention are introduced, under the prerequisite that does not break away from as the defined scope of the present invention of claims, those skilled in the art can make amendment to the present invention.For example, the stainless steel of first embodiment clamping finger can be replaced by rubber-like leaf spring clamping finger own.The clamping force that leaf spring clamps finger can improve by torsion spring.

Claims

1. conveying belt that is used for electroplating system, it comprise a plurality of be pivotally mounted on described with going up so that its free pinching end lean against described with on the clamping finger, and the elastic component that links to each other with the described clamping finger of described band and at least one, thereby can impel the described free end of described clamping finger to lean against described being with, like this, strip piece can be clipped between the free end of described band and described clamping finger.

2. conveying belt according to claim 1 is characterized in that described band comprises at least one pivot pin, and it is used to install at least one described clamping finger and rotates to carry out pivot.

3. conveying belt according to claim 2 is characterized in that, described pivot pin is installed in by in the formed bracket of the material of described band.

4. according to claim 2 or 3 described conveying belt, it is characterized in that, described band comprise at least one be removably mounted on described with on the installation insert, and comprise the bracket that is used to install described pivot pin.

5. conveying belt according to claim 4 is characterized in that, described installation insert comprises that at least one is used for fixing the bracket of the end of described elastic device.

6. conveying belt according to claim 1, it is characterized in that, described band comprises opening and at least one the described clamping finger that is used for each described clamping finger, and described elastic device from described free end against a side of described band extend by described opening.

7. conveying belt according to claim 1 is characterized in that described elastic device comprises torsion spring.

8. conveying belt according to claim 7 is characterized in that, described torsion spring pivotally is connected on described at least one clamping finger, and its turning axle is parallel to plane and its longitudinal axes of described band.

9. conveying belt according to claim 7, it is characterized in that, described torsion spring has a pitch of the laps and two and has the arm of end separately, and described torsion spring is fixed near the described of an end of described torsion spring and is with, and is fixed on the described clamping finger near the other end of described torsion spring.

10. conveying belt according to claim 7 is characterized in that described torsion spring has the pitch of the laps that comprises at least one circle, and described pitch of the laps leans against on the surface of described band.

11. conveying belt according to claim 7 is characterized in that, described torsion spring is made by wire rod, comprises the middle body that links to each other with described clamping finger and from extended two arms of described middle body, each described arm includes pitch of the laps.

12. conveying belt according to claim 1, it comprises that one supports the single pivot pin of a plurality of described clamping fingers, one has the single wire rod of the part that links to each other with each described clamping finger, with at least one pitch of the laps, lean against on described being with the free end that impels each described clamping finger as described torsion spring.

13. conveying belt according to claim 12 is characterized in that, in described pivot pin upper support two described clamping fingers, the arm of spring material is contained in the opening of each described clamping finger, the pitch of the laps of each described arm is supported on the described pivot pin.

14. conveying belt according to claim 12, it is characterized in that, described wire spring material passes the bracket on each described clamping finger, thereby form the arm on each side of each the described clamping finger extend to described pivot pin, the pitch of the laps of each described arm is formed at each side of each described clamping finger herein, the bracket of the arm of each described wire spring material links to each other with each described clamping finger, described wire spring material passes its bracket separately and the next bracket that clamps finger, like this, described wire spring material has formed the elastic device that is used for each described clamping finger.

15. conveying belt according to claim 1 is characterized in that, described clamping finger can have been fixed interfacing part by being formed by the part that described band stamped out on the edge of described band, and the free end of described clamping finger leans against on the described edge.