CN2191517Y - Conveyer for printed circuit board - Google Patents

Abstract

The utility model relates to a conveyer for printed circuit board. A plurality of conveying wheels are penetrated by a conveying shaft. Fixed length connection shafts are penetrated among the conveying wheels, so that the distance between every two conveying wheels is equal, and hanging racks are hung among the conveying wheels. Fixed devices are arranged on the both ends of the conveying shaft, fixing all the components which are arranged between the both ends of the conveying shaft. Hanging racks are arranged between the noncoaxial adjacent conveying wheels and between the connection shafts, supporting the circuit board. In addition, a driving gearset is arranged on one end of the conveying shaft. The conveying shaft is drived by a motor. Driven by a couple of cylindrical tooth drive and driven gears (which interengage with each other) and by a couple of drive and driven straight gears (which interengage with each other), the upper and the lower conveying shafts rotate. So that the driving device is formed.

Description

Conveyer for printed circuit board

The utility model relates to a kind of device for transferring printed circuit board, You Zhiqi has when assembling delivery wheel and connection shaft more convenient, and the fixture of improvement conveying axis two ends is damaged to avoid being subjected to the erosion of chemical agent, in addition the driven wheel of driving cog is established with cylindric tooth, the useful life that can improve part to reduce the side direction active force, and in being linked with hanger between out-of-alignment adjacent conveyor wheel and between connection shaft, damage circuit board when preventing to wash.

In the imformation age, printed circuit board (PCB) is the soul of any electronic product, and is dominating precise electronic product reaches the dexterous design of any peripheral part do on function key position.Usually; the manufacturing of printed circuit board (PCB) is to cook up designed circuit in advance on plate body; on the circuit surface that desire keeps, establish with protection; plate body placed send into chemistry erosion on the conveying device and wash the chemical agent flushing of doing in the machine up and down, lost with the surface that will not do to protect and wash off and keep predetermined circuit.Traditional device for transferring printed circuit board is to be pivoted on board that several are combined with the conveying axis of several delivery wheels, and be positioned at the position of upper and lower in paired mode, and according to actual needs in wearing the connection shaft that is set as length-specific in advance on the conveying axis between each delivery wheel so that keep certain distance between each conveying axis, and keep suitable distance between the delivery wheel of upper and lower and printed circuit board (PCB) is washed in the machine to deliver into erosion by the delivery wheel clamping of upper and lower, the chemical agent that above washing in the machine by erosion and below sprays is lost to be washed, and obtain average stressed, two ends in central shaft are provided with fixture fixedly to be arranged in above-mentioned each connection shaft and the delivery wheel on the conveying axis in addition, and the end in each conveying axis is provided with driving gear set, order about delivery wheel in order to the rotation of drive transfer axle and pinch printed circuit board (PCB), yet because the thickness of the required printed circuit board (PCB) of high-tech very thin (between about 0.05mm～0.2mm) now, and in order to the chemical agent that erosion is washed is strong basicity or highly acid, has following shortcoming at least so plant traditional conveying device:

(1) only utilizes delivery wheel to pinch printed circuit board (PCB) not have any extra support owing to traditional conveying device; and accurate printed circuit plate thickness is about again only in the scope of 0.05mm～0.2mm; so regular meeting deforms even is stuck in to cause between conveying axis and loses when the chemical agent that is subjected to big strength impacts, do not conformed to practicality stressing the accurate epoch of making now.

(2) traditional in order to be located at the fixture of conveying axis end with fixedly connected axle and delivery wheel; be to be arranged in the end of conveying axis and to be resisted against the delivery wheel side of outermost end with an external member; be provided with the screw that runs through in external member; and in the screw DRIVE SCREWS; support pull conveying axis and fixed sleeve part by the end of screw; yet because the chemical agent of erosion developing and printing printed circuit board is strong basicity or highly acid; so the screw of metal is subjected to corrosion and damage quite easily and gets loose; must shut down replacing often, seem quite dangerous reliable.

(3) spur gear that is fixed on the conveying axis end also screws in the screw that is preset in the gear wheel hub with screw and supports and pulls conveying axis and fix, so also can produce the situation that screw is subjected to corrosion and damage and gets loose.

(4) traditional delivery wheel wheel face adopts that hard plastic is one-body molded to be made, thus when pinching accurate printed circuit board (PCB) very easy scratch circuit board surface, cause the useless and fraction defective of increase product of entire circuit blackboard newspaper.

(5) traditional conveying axle bed inner face in order to the supporting conveying axis is straight shape design; so the situation that the circuit board end is stuck in this conveying axle bed end limit takes place in regular meeting in the stroke of carrying printed circuit board (PCB); the clamp phenomenon that causes chain reaction; must be shut down and get rid of and to produce once more, can't be increased work efficiency.

(6) the driving and driven gear in order to transmission vertical direction power is to mesh with bevel gear in the driving gear set of traditional conveying device, therefore the gear teeth of each driving and driven gear have all born bigger side force, the fixed form of traditional driving and driven gear is also fixed with screw usually or is fixed in the latch mode again, get loose easily or corrode and cause gear distress, so must change the gear of wearing and tearing often, on safeguarding, waste time and energy.

Based on this, the purpose of this utility model is to provide a kind of device for transferring printed circuit board, and it changes traditional connected mode, to prevent the corrosion of metal parts, and by servicing unit avoiding that the clamp phenomenon takes place, thereby improve the reliability and the production efficiency of whole device.

For achieving the above object, the device for transferring printed circuit board that the utility model provides is to be provided with hanger in each connection shaft, with the supplemental support printed circuit board (PCB), thereby in the situation that is subjected to the chemical agent unlikely clamp that deforms of when flushing.

The device for transferring printed circuit board that the utility model provides is made as the direct locking of plastic cement with fixture and compels to close fixing form, with the shortcoming that prevents that conventional screw from easily getting loose and corroding.

The device for transferring printed circuit board that the utility model provides, it is with the combination of the direct clip fixed form of plastic cement, with the shortcoming that prevents that conventional screw from easily getting loose and corroding in order to the spur gear that is combined in the conveying axis end.

The device for transferring printed circuit board that the utility model provides is provided with soft cambered surface rubber ring in addition on the wheel face of its delivery wheel, injure circuit board surface and improve the qualification rate of product with unlikely when pinching printed circuit board (PCB).

The device for transferring printed circuit board that the utility model provides, with the driving and driven design of gears in order to transmission vertical direction power in the driving gear set is disc, be provided with cylin-drical tooth in disc face, lower side force by the engagement of a contact and lower frictional resistance, the combination of driven gear and conveying axis is to be fixed on the spur gear of conveying axis end with the direct clip of plastic cement again, be combined as a whole with spur gear, do not get loose or be subjected to corrosion to cause skidding and cause the anxiety of driven gear damage, and then gear life is prolonged with conveying axis.

The device for transferring printed circuit board that the utility model provides, it carries the inner face of axle bed to form the arc limit, so that printed circuit board (PCB) unlikely generation clamp situation when carrying.

Other purpose of the present utility model and function are after conjunction with figs. is done further explanation; prestige can make the relevant personnel that detailed understanding is arranged; and the following stated only is in order to explain preferred embodiment of the present utility model; be not that attempt is done any pro forma restriction to the utility model according to this, so all have that identical creation spirit is following to be done relevant any modification of the present utility model or change and all still be included in the category that claim of the present utility model protects.

Fig. 1 is for showing the side-looking floor map of the utility model conveying device global tissue relation;

Fig. 2 is for showing the schematic top plan view of the utility model conveying device global tissue relation;

Fig. 3 is serially connected with the three-dimensional exploded view of each parts structure of conveying axis for showing the utility model;

Fig. 4 is for showing the section plan of conveying axis of the present utility model and active spur gear and driven gear assembly;

Fig. 5 is for showing the section plan of fixture structure of the present utility model;

Fig. 6 is for showing the section plan of conveying axis structure of the present utility model;

Fig. 7 is for showing the floor map of conveying axle bed of the present utility model;

The floor map of Fig. 8 for showing that conveying axle bed guiding printed circuit board (PCB) of the present utility model is carried;

Fig. 9 hangs the floor map of upper and lower stage casing hanger for showing the utility model at connection shaft;

Figure 10 hangs the section plan of upper and lower end hanger for showing the utility model at connection shaft;

Figure 11 is for showing the stereogram of going up stage casing hanger form of the present utility model;

Figure 12 is for showing the stereogram of going up stage casing hanger form of the present utility model;

Figure 13 is for showing the stereogram of upper end of the present utility model hanger form;

Figure 14 is for showing the stereogram of bottom of the present utility model hanger form;

Figure 15 is for showing the plan view of driving gear of the present utility model and driven gear engagement;

Figure 16 is for showing the stereogram of driving gear of the present utility model, driven gear and the detailed form of active spur gear.

As shown in Figure 1, 2, provided by the utility model being located at lost in the machine of washing in order to carry printed circuit board (PCB) to make the chemical conveying device of washing of losing, be in machine is washed in erosion, to be provided with the nozzle that is positioned at upper and lower for the ejection chemical agent, two sides in nozzle location are provided with the conveying cylinder F that is relative up and down, in order to pinch printed circuit board (PCB) E, then be provided with conveying device with the utility model creation characteristic at this nozzle location place.Conveying device provided by the utility model, include several the conveying axis that are set in parallel 1 in its preferred embodiment, be arranged in conveying axis 1 several delivery wheels 2, several connection shafts 3, be arranged in conveying axis 1 two ends with the fixture 4 of fixing delivery wheel 2 with connection shaft 3, and in order to driving the driving gear set of each conveying axis 1 rotation, and with two end bearings of this conveying axis 1 in carrying axle bed 8 default grooves 81.

As shown in Figure 3, wear several delivery wheels 2 and connection shaft 3 with conveying axis 1 in the preferred embodiment of the present utility model, this connection shaft 3 is arranged between per two delivery wheels 2, and its length is shaped to certain length, so that pressing from both sides, connection shaft 3 fixed 2 specific ranges of two delivery wheels when being against between two delivery wheels 2, establish with fixture 4 in addition and be integral in conveying axis 1, delivery wheel 2 and connection shaft 3 can be rotated with the rotation of conveying axis 1 with fixedly delivery wheel 2 and connection shaft 3 in two ends of conveying axis 1; Wherein, an end of this delivery wheel 1 is formed with an annular groove 11(as shown in Figure 4), be formed with barb portion in the outside of annular groove 11; As shown in Figure 6, the axial two side settings of this delivery wheel 2 have the wheel hub of several sawtooth 22, and wheel face ring week is formed with groove 21, sheathed in groove 21 places with cambered surface rubber ring 23, this cambered surface rubber ring 23 forms excircle and is cambered surface, and inner periphery has the form of flanged ring 231, is embedded the groove 21 of delivery wheels 2 and cambered surface rubber ring 23 and delivery wheel 2 are combined by this flanged ring 231, is subjected to the scratch of delivery wheel 2 and influences its accuracy so that printed circuit board (PCB) is unlikely when pinching thereon; This connection shaft 3 has the centre bore that can supply conveying axis 1 to pass, when its axial two ends are formed with sawtooth 32 corresponding to delivery wheel 2 two end sawtooth 22 and are placed in conveying axis 1 for it and delivery wheel 2 be engaged with each other and be able to Synchronous Transmission, and be provided with the ring groove 31 in week in two sides of connection shaft 3; This fixture 4 includes a fixture 42, and compels a trap 43 and a lock nut 41, this fixture 42 forms the form with external screw thread 422 and all grooves 423 of a ring, and at one end be axially arranged with serrations 421, and be provided with an axial through hole for be arranged in conveying axis 1 and with sawtooth 22 engagement of delivery wheel 2, this through hole is made as the enlarged diameter and form taper hole gradually again after other end equal diameter extends to suitable distance by serrations 421 end places; And should compel trap 43 forms outside corresponding fixture 42 taper holes with plastic material shape, and internal diameter to be equal diameter can pass for conveying axis 1, simultaneously in being provided with several raised lines 431 fastening force to the axle center when strengthening packing its internal diameter ring week, and severed and be discontinuous cone in appropriate location, so that whole urgent trap 43 has elasticity; This lock nut 41 form inner bolt hole 411 with corresponding fixture 42 external screw threads 422 and each other screw lock cooperate, and form inward flange, and be provided with the hole that can pass for conveying axis 1 in the center in the inner end of inner bolt hole 411; As shown in Figure 5, after connection shaft 3 and delivery wheel 2 assemblings, again fixture 42 is inserted in conveying axis 1, be engaged in the sawtooth 22 of delivery wheel 2 by its serrations 421, then be inserted in the taper hole of fixture 42, and conveying axis 1 is subjected to the internal diameter raised line contact clamping of this urgent trap 43, is screwed together in the external screw thread 422 of fixture 42 subsequently again with lock nut 41 to compel trap 43, in the process of screwing togather, the inward flange of this lock nut 41 moves and compels trap 43 with packing toward the less directions of diameter to the urgent trap 43 of pulling and clamps conveying axis 1.Please cooperate Figure 11,12,13, shown in 14, the utility model is provided with some upper end hanger C in addition, bottom hanger D, last stage casing hanger B reaches stage casing hanger A down, two ends of this upper end hanger C have catching groove C1 for being buckled in the adjacent connection shaft 3 that is positioned at the immediate conveying cylinder F in the top groove 31 with adjacent fixed part 42,423 and be loose fit, and form recessed lower curtate between two catching groove C1 so that it makes the center of its low recess near 2 of delivery wheels up and down after hanging, and extend acclivitous guide bar C2 in the one end, and two ends of bottom hanger D have catching groove D1 for being buckled in the adjacent connection shaft 3 that is positioned at the immediate conveying cylinder F in the below groove 31 with adjacent fixed part 42,423 and be loose fit, and form straight form between the two catching groove D1, and the one end extends downward-sloping guide bar D2, can freely pass through (as shown in figure 10) by the space that the low recess form of its straight form and upper end hanger C is constituted for printed circuit board (PCB) E, and by the guide bar C2 that tilts, the formed big opening of D2 can successfully enter for printed circuit board (PCB) E, bottom hanger C, D; And two ends that should go up stage casing hanger B have catching groove B1 for the groove 31,423 that is buckled in 42 of 3 of two adjacent connection shafts being positioned at the top and two adjacent fixtures and be loose fit, and form low recess between two catching groove B1; And down two ends of stage casing hanger A have catching groove A1 for the groove 31,423 that is buckled in 42 of 3 of two adjacent connection shafts being positioned at the below and two adjacent fixtures and be loose fit, and form straight form between two catching groove A1, being made of the indentation form of its straight form and last stage casing hanger B is enough to for the freely through space of printed circuit board (PCB) E (as shown in Figure 9).

Cooperate Fig. 2 again, 3, shown in 4, the utility model is provided with a power transmission shaft 9 in advance in order to the mechanism that drives conveying axis 1, on power transmission shaft 9, be combined with a driving gear 7, and conveying axis 1 end that is positioned at the top is combined with initiatively spur gear 5 of a driven gear 6 and, and this driven gear 6 combines with active spur gear 5 and can rotate synchronously, and the conveying axis 1 that is positioned at the below is provided with driven spur gear (not shown) and initiatively spur gear 5 engagements, this driven gear 6 is axially vertical form with driving gear 7, drive power transmission shaft 9 and make driving gear 7 rotations by the motor (not shown), and then drive driven gear 6 and initiatively spur gear 5 rotate synchronously, drive driven spur gear rotation by active spur gear 5 again, the conveying axis 1 that is positioned at upper and lower this moment promptly rotates synchronously and orders about delivery wheel 2 and connection shaft 3 and also rotate and pinch printed circuit board (PCB) E, and by last, following stage casing hanger B, on A reaches, bottom hanger C, the supporting role of D and make printed circuit board (PCB) E the time can not bend or be stuck in and cause the drawback of losing between feeding axle being subjected to the chemical agent flushing; Wherein, this driving gear 7 is designed to disc with driven gear 6, be provided with a square centre bore and directly cooperate and be fixed on the power transmission shaft 9 that also is formed with square section in the card of driving gear, and card ring week is provided with equidistant cylin-drical tooth 71, driven gear 6 then is provided with a non-orbicular centre bore in card, as shown in figure 16, its preferable enforcement is that the side at centre bore is provided with tangent plane 62 in, and combine closely with the outer tangent plane on the main shaft 51 of active spur gear 5, and card is also encircled and is provided with equidistant cylin-drical tooth 61 week, do the transmission of vertical direction so can mesh with the cylin-drical tooth 71 of driving gear 7, and therefore cylin- drical tooth 71,61 some contact action and lower its side direction active force (as shown in figure 15), because of the cylindrical gear fixed form with direct embedding clip, so gear life is prolonged, can reduce the maintain and replace time.As for the engagement formation of this active spur gear 5 with conveying axis 1, it is the main shaft 51 that is axially arranged with in this active spur gear 5, in main shaft 51, be provided with and have the countershaft 52 that a through hole and limit wall form some flutings, through hole inwall in this countershaft 52 is provided with corresponding barb 521, when passing the through hole of countershaft 52 for conveying axis 1, the annular groove 11 that is buckled in conveying axis 1 by this barb 521 is with fixing (as shown in Figure 4), makes the damage that needn't worry promptly under the situation of not using the screw locking fully that metal is corroded and cause parts or printed circuit board (PCB).

And for example shown in Fig. 7,8, the utility model is in order to the conveying axle bed 8 of supporting conveying axis 1, be that face forms the arc limit within it, make two ends of this conveying axle bed 8 form bigger opening thus, when carrying, printed circuit board (PCB) E waltzed through to prevent printed circuit board (PCB) E contingent clip situation (as shown in Figure 8) when carrying, to enhance productivity.

By the above as can be known, novel structure of the present utility model, uniqueness have excellent practical function.

Claims (1)

1. A kind of device for transferring printed circuit board, include conveying axis, several delivery wheels, several connection shafts, fixture and driving gear set, wear several delivery wheels with conveying axis, and between each delivery wheel, wear connection shaft, and establish with fixture with fixedly delivery wheel and connection shaft in conveying axis in two ends of conveying axis, and to link each delivery wheel by connection shaft be one and can rotating with the rotation of conveying axis, be provided with driving gear set in addition in conveying axis one end to drive conveying axis, and the overhang bracket of conveying axis is in carrying on the axle bed, this driving gear set includes a pair of driving gear and the driven gear that is provided with in vertical direction, and with the coaxial spur gear initiatively that is provided with of driven gear, and be provided with a driven spur gear and organize conveying axis to drive another with the engagement of active spur gear, delivery wheel, connection shaft and fixture is characterized in that:

   One end of this conveying axis is formed with an annular groove, has barb portion in the outside of annular groove;

   The axial two side settings of this delivery wheel have the wheel hub of several sawtooth, and wheel face ring week are formed with groove, are provided with the cambered surface rubber ring in groove;

   This connection shaft has the centre bore that can supply conveying axis to pass, and the sawtooth that is formed with corresponding to delivery wheel two end sawtooth in its axial two ends is engaged with each other for it, and is provided with the ring groove in week in two sides; Other is provided with several upper end hangers and bottom hanger, two ends of this upper end hanger have catching groove for being buckled in the adjacent connection shaft that is positioned at the upper end limit and the groove of adjacent fixed part, and form recessed lower curtate between two catching grooves, extend acclivitous guide bar in the one end; And two ends of bottom hanger have catching groove for being buckled in the two adjacent connection shafts that are positioned at the lower end limit and the groove of two adjacent fixtures, and form straight form between two catching grooves, extend downward-sloping guide bar in the one end;

   Other is provided with on several stage casing hanger and stage casing hanger down, and two ends of stage casing hanger have catching groove for being buckled in the adjacent connection shaft that is positioned at the top and the groove of adjacent fixed part this on, and forms between two catching grooves and hang down recess; And down two ends of stage casing hanger have catching groove for being buckled in the two adjacent connection shafts that are positioned at the below and the groove of two adjacent fixtures, and form straight form between two catching grooves;

   This fixture includes a fixture, and compels a trap and a lock nut, this fixture has external screw thread and all grooves of a ring, and at one end be provided with serrations with the engagement of delivery wheel, be axially arranged with a through hole in it and pass for conveying axis, this through hole is made as the enlarged diameter and form taper hole gradually again after other end equal diameter extends to suitable distance by serrations end place; Should compel trap and form the shape of outside corresponding fixture taper hole, and internal diameter to be equal diameter be provided with several raised lines simultaneously passes for conveying axis, and severed and be discontinuous cone in appropriate location; This lock nut formation has the externally threaded inner bolt hole of corresponding fixture and can lock fixture, and forms inward flange in the inner end of inner bolt hole, and is provided with the hole that can supply conveying axis to pass in the center, compels trap with packing to clamp conveying axis;

   The end limit of this conveying axle bed forms the arc limit, to prevent printed circuit board (PCB) contingent blocking situation when carrying;

   This driving gear and driven gear are equipped with a non-positive round center hole, are matched with the power transmission shaft that also is provided with corresponding non-circular section portion respectively and combine fixing with conveying axis;

   This active spur gear and driven spur gear are for forming the non-positive circular main shaft binding so that it is fitted to each other with a corresponding driven gear centre bore, within this main shaft, be provided with and have the countershaft that a through hole and limit wall form some flutings, through hole inwall in this countershaft is provided with corresponding barb, is buckled in the annular groove of conveying axis with this barb when passing for conveying axis and fixes.

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