JPS6220685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for applying conductive coatings to the ends of small electrical parts such as small capacitors and resistors.

When coating such small parts, it is desirable to have the following characteristics.

(a) To process parts economically in terms of time and cost. That is, processing parts in units of hundreds for each operation.

(b) The occurrence of defective products should be as low as possible, and defects should be detected immediately.

(c) Utilize equipment that is relatively economical, has low maintenance costs, is easy to operate, and has a long service life.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method and apparatus for coating the edges of small electrical parts having the above-mentioned characteristics, and the main advantage of the present invention being the saving of time.

Next, the present invention will be explained in detail based on illustrated embodiments.

The purpose of the method and device of the invention is to perform certain operations on parts, in particular small electrically conductive parts 1.
Coatings 34 and 36 are sequentially applied to the ends of 6. FIG. 9 shows a part to which a coating 34 has been applied, and FIG. 14 shows a part to which a further coating 36 has been applied.

Part 16 is, for example, a chip capacitor or a resistor. For example, the size is 1/16" x 1/16" in cross-sectional area and 3/32" to 5/32" in length.
It may be larger or smaller than these. The construction of such small capacitors or resistors will be understood by those skilled in the art. For example, a capacitor has a significant number of conductive layers separated by non-conductive layers.
The conductive layers, when stacked one after the other, may form contacts at both ends of the part 16, but in many cases such small parts 16 need to be provided with a conductive coating at both ends. The present invention relates to such operations.

The figure shows a series of operations, and FIG. 1 shows, from top to bottom, an operation plate 10, a storage plate 12,
A supply slot 14 is shown. FIG. 2 schematically shows the accommodation portion of the accommodation plate 12 of FIG. 1 with vibration, suction and spring mechanisms added. FIG. 3 shows the operating plate 10 and the housing plate 12 with the parts 16 inserted into the housing plate 12.

FIG. 4 shows (a) transferring the part 16 from the storage plate 12 to the operating plate 10, (b) transferring the part 16 from one side of the operating plate 10 to the other side, and transferring the part 16 to the operating plate 10. The punch mechanism 18 used for taking out the paper is shown.

FIG. 5 shows the sequence of operating steps involving the punch mechanism 18. The upper figure shows the punches 2 arranged in a row, and the lower figure shows the operation plate 10, the storage plate 12, and the take-out plate 20.
and a punch base 22 are shown. FIG. 6 is a view similar to FIG. 5, but the punch 24 of the punch mechanism 18 is in the process of transferring the part 16 from the storage plate to the operating plate 10. The end of the part 16 protrudes from the upper surface of the operation plate 10.

The method of operating the part 16 includes elastically holding the part 16 in the passage 26 of the operating plate 10, and FIG. 7 shows the part 16 in a resiliently held state. Part 16 is typically square (cross-sectional), so passageway 26 is circular and its diameter is typically smaller than the largest cross-sectional dimension of part 16. The walls of the passageway 26 are provided with an elastic coating to accommodate and retain the parts 16.

In FIG. 8, the end of the part 16 is attached to the operating plate 1.
The apparatus for processing this operating plate 10 is shown in a state protruding from the zero position. This device is part 16
Conveyor mechanism 2 used to apply a coating to the edges of and heat cure the coating.
8, a coating mechanism 30, and a heating mechanism 32, and FIG. 9 shows a state in which a coating 34 is applied to one end of the part 16.

FIG. 10 is similar to FIG. 6, but shows the operation plate 10 returned to the punch mechanism 18 and attached upside down after the coating 34 has been applied. The other end of the part 16 is made to protrude beyond the surface of the operating plate 10 by the punch 24, so that the other end can be coated. 1st
FIG. 1 shows the operating plate 10 turned over from the state of FIG. 10 with the other end of the part 16 protruding, and ready to be passed through the coating device shown in FIG.

FIG. 12 shows the punch mechanism 18 in the process of transferring the part 16 from the operating plate 10 to the extraction plate 20. FIG. 13 shows the parts 16 being ejected from the take-out plate 20 and scattered. FIG. 14 shows the part 16 with a coating 34 on one end and a coating 36 on the other end.

Next, this invention will be explained in more detail.

The basic component of the coating device of the present invention is the operating plate 10. This operation plate 10
has a passageway 26 for accommodating a large number of parts whose walls are coated with an elastic material. The operating plate 10 is made of metal and is provided with grooves 40 for edges 42 over most of both sides.
In this groove 40, a metal web 44 with a number of holes 46 is left in the center. A resilient plastic material 48 is used to fill the grooves 40 and holes 46 except for the passages 26. The plastic material 48 provides a resilient wall of the passageway 26 to receive and retain the part 16, as specifically shown in FIG. The plastic material 48 may be selected from a variety of applicable plastics or rubbers, including flexible silicone rubber. The selection of materials, methods, configurations, etc. to be applied to form the operating plate 10 will be apparent to those skilled in the art. In the claims, the plastic material 48 is described as "elastic plastic," but this term is defined to include materials suitable for use such as plastic or natural or synthetic rubber. The purpose of providing the groove 40 is to simply fill the hole 4.
(rather than covering 6) plastic material 4
8 in that position.

The part 16 is usually square in cross-section, and even if it were circular, the action of the walls of the passage 26 in retaining the part 16 is such that the diameter of the passage 26 is smaller than the maximum lateral dimension of the part 16. It can be made similar to

The basic method for manipulating the part 16 within the passageway 26 is to (a) insert the part 16 into the passageway 26, and (b) insert the part 16 so that one end of the part 16 is connected to the manipulation plate 10.
(6th step) until it protrudes from the surface of the
(c) moving the part 16 until its other end protrudes from the surface of the operating plate 10 (see FIGS. 10 and 11);
It is made up of. These projecting ends of the part 16 are coated by the apparatus shown in FIG. 8 after the steps (b) and (c) above.

Now, move the part 16 to the passage 2 of the operating plate 10.
6, the part 16 is inserted into the receiving plate 12 by using the part receiving plate 12, the feed frame 14, and a vibration and suction device, an action conventionally used in the prior art. This is accomplished in a way that

The supply frame 14 has a cavity 52 for receiving the loose parts 16. Opening surface 54 of void space 52
is covered by a storage plate 12 and an operation plate 10, and these storage plates 12 and operation plates 10 have their respective alignment openings 5.
It is positioned by the alignment pins 5 of the supply frame 14 that protrude at 8 and 60. Part 16 is accommodated in the cavity in the manner shown in FIG. The device is then turned over as shown in FIG. Connecting the vibration and suction device 62 to the base 63 on the lower surface of the operating plate 10 and at the same time attaching a suitable spring 64 to the base 63 is a common convenience for those skilled in the art when storing parts in a plate such as the housing plate 12. The emphasis here is on suction from the lower end of the passageway 26 to vibrate the device and at the same time assist in filling the holes 5 in the plate 12 with the parts 16. Generally, this is done as follows. That is, the holes 50 are slightly larger than the part 16, but not so large that they can be mounted in either direction, and because their longitudinal axes are perpendicular, they are located forward of the end with respect to the passageway 26. It exists towards. The upper end 66 of the hole 50 is receptacle-shaped for easy reception of the part 16.

Since the only required orientation of the part 16 is with the end facing forward, the cross-section of the hole 50 may be circular or square. If the hole 50 has a circular cross-section, filling the hole 50 with the part 16 will be somewhat faster. For example, 2145 holes 50
However, it only takes 8-10 seconds to fill 100% with part 16.

The punch mechanism 18 is in the form of a press, and includes an upright alignment pin 7 inserted into an alignment opening 72 of the take-out plate 20, an alignment opening 60 of the operation plate 10, and an alignment opening 58 of the storage plate 12.
A base 22 with 0 is provided to hold the plates in proper alignment.

At the top of the punch mechanism 18, an upper plate 74 is provided.
and a rack 76 erected on this plate 74.
And the pinion 78 that meshes with this rack 76,
A handle 80 is fixed and rotatably attached to the shaft 82 of the pinion 78, and the handle 80 is manually rotated to rotate the pinion 78.
8, the upper plate 74 moves up and down. The bearing of the shaft 82 is supported by an arm 84 erected on the base 22.

The rows of pin-shaped punches 24 are fitted into the holes 50 of the storage plate 12 , the passages 26 of the operating plate 10 , and the plurality of holes 86 of the extraction plate 20 , so that they are properly positioned relative to the upper plate 74 . can be attached to. When the handle 80 is moved, the part 16 is inserted into the hole 50 of the receiving plate 12.
position into the passageway 26 of the operating plate 10. A passage 26 of this part 16 in which the upper end of the part 16 remains above the upper surface of the operation plate 10.
A first state within the container is shown successively in FIGS. 5 and 6, in which the part 16 is ready for coating. The stopper 90 rotatably attached to the auxiliary plate 92 is connected to the part 16.
When the end portions are pushed into the state shown in FIG. 6, they are in an upright state and are able to stop the upper plate 74.

The next state of the part 16 in the passage 26 is shown in FIG. 10, with the other end of the part 16 being located below the lower surface of the operating plate 10,
Coating is possible. Auxiliary plate 9
When the end of the part 16 reaches the state shown in FIG.
It has become possible to stop the By performing the type of operation shown in FIG. 10 twice, it can be replaced by the type of operation shown in FIGS. 6 and 10.
That is, after performing the operation shown in FIG. 10, by turning over the operation plate 10 and performing the same operation, both ends of the part 16 can be placed in a position where coating is possible.

The auxiliary plate 92 is connected to the hole 10 in the upper plate 74.
The upper plate 74 is supported by a rod 100 slidably attached to the upper plate 92 and fixed to the auxiliary plate 92. This rod 10
The head end 104 of the 0 serves as a stop to limit the downward movement of the auxiliary plate 92 relative to the upper plate 74 to a desired position over the lower end of the punch 24 as shown in FIG. The auxiliary plate 92 has a hole 106 into which the punch 24 fits. rod 10
A compression spring 108 is interposed between the upper plate 74 of the zero and the auxiliary plate 92, and normally the auxiliary plate 92 is pressed toward the lower position covering the punch 24 as shown in FIG. There is.
The purpose of the auxiliary plate 92 is to (a) operate the operating plate 1;
(b) when the punch mechanism 18 is opened; (b) when the punch mechanism 18 is opened;
The elastic wall of the passage 26 of the operation plate 10 is the punch 2
4 tends to be lifted together with the upper plate 74, so the operation plate 10 has to be peeled off from the row punches 24.

After completing the steps shown in FIGS. 5 and 6, the operating plate 10 is removed from the punch mechanism 18, and then a coating 34 is applied to one end thereof. After completing the process shown in FIG. 10, a coating 36 is applied to the other protruding end of the part 16, as shown in FIG. The apparatus schematically shown in FIG.
It represents.

The operation plate 10 is schematically shown placed on a movable table 109 that can be fixed in position by having upright pins 110 installed in the alignment holes 60 of the operation plate 10. The conveyance mechanism 28 (including the screw mechanism) may not actually be common to the coating device 30 and the heating furnace 32. That is, the method may be such that the end portion of the part 16 is first coated, and then the operation plate 10 is placed on a conveyor of a heating furnace.

As mentioned above, the coating mechanism 30 is of the general type having a metal roll 120 through which the part is typically coated.
A doctor blade (not shown) is provided to control the amount of coating agent applied to the end portion of the roller 6, and a reserve device 122 is provided to supply coating agent to the roll/doctor blade mechanism.

Conductive hardened coating 3 on the ends of part 16
The coating and curing mechanism used in the application of No. 4,36 will not be discussed further, but the types of coatings include conventional materials, such as composites of finely ground silver based on resins that can be heat-cured in an oven. There is.

By allowing the parts 16 to be processed by the apparatus shown in FIG. 8, time can be saved with high efficiency. To illustrate the extent of said time savings by using the apparatus shown in FIGS. 1 and 2, holes 50 in receiving plate 12
It takes about 8 to 10 seconds to insert about 2,000 parts 16 into the machine. The part 16 is removed by the device shown in FIG.
The process of the operation of FIGS. 5 and 6, which is ready for coating, takes, for example, about 5 seconds. In addition, the part 16 is punched by the punch mechanism 18.
The time required for the movement (see FIG. 10) is approximately 5 seconds or less. Coating one end of part 16 takes approximately 10 seconds. It takes about two and a half minutes to cure the coating in the oven. After coating and curing, a complete inspection of any uncoated parts of the part 16 can be done simply by visually inspecting the operating plate 10; is rare.

The time required to push the part 16 from the passage 26 of the operating plate 10 into the hole 86 of the extraction plate, as shown in FIG. 12, is 10 seconds. FIG. 13 shows the ejection from the take-out plate 20.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention; FIG. 1 is an exploded perspective view of a device for accommodating and arranging small electrical parts;
2 is an enlarged assembled sectional view of the device shown in FIG. 1, FIG. 3 is a partial view of FIG. 2, FIG. 4 is a perspective view showing the punch mechanism, and FIG. 5 is a partial sectional view of FIG. 4. Fig. 6 is a sectional view similar to Fig. 5 showing the operating state of the punch mechanism, Fig. 7 is a partial plan view showing the state in which small electrical parts are attached to the operation plate, and Fig. 8 shows the coating and curing device. 9 is a perspective view showing a state in which a conductive coating is applied to one end of a small electrical part, and FIG. 10 is a sectional view similar to FIG. 5 showing another operating state of the punch mechanism. , FIG. 11 is a cross-sectional view showing a part of the operation plate in FIG. 10 when it is turned over, FIG. 12 is a cross-sectional view similar to FIG. 5 showing yet another operating state of the punch mechanism, and FIG. The figure is a sectional view partially showing a state in which a small electrical part coated on both sides is discharged from the take-out plate, and FIG. 14 is a perspective view showing the small electrical part coated on both sides. 10...operation plate, 12...accommodation plate, 1
6... Parts, 18... Punch mechanism, 20... Takeout plate, 22... Punch base, 24... Punch, 26
...passage, 34, 36...coating, 48...elastic plastic material, 74...plate, 76...rack, 78...pinion, 80...handle, 92...auxiliary plate.

Claims (1)

[Claims] 1 (a) A plate body having a large number of parallel through passages is formed, and these passages are constituted by elastic walls,
and the dimensions of each passageway are smaller than the dimensions of the corresponding small electrical part so that the parts are resiliently gripped when pushed into these passageways. (b) pushing said part into said passage; (c) moving said parts within said passageway until all said parts have surfaces projecting from one side of said plate body; (d) Coating the protruding ends of said parts. A method for coating the edges of many small electrical parts, characterized by comprising the steps (a) to (d) above. 2 The next step is to push all the parts in the passage until their tips protrude from the back surface of the plate body at the same intervals, coat the protruding tips, and then take out the parts from the passage. A method of coating ends of a large number of small electrical parts as claimed in claim 1. 3. The method of coating the ends of a large number of small electrical parts according to claim 1, characterized in that the member is pushed into the passage using a punch mechanism having a large number of parallel punches. 4 (a) A plate body having a large number of parallel passages. (b) said passage has a resilient wall such that a small electrical part can be positioned within said passage, and the dimensions of said passage are smaller than the dimensions of the corresponding part; To be held elastically. A device for coating the ends of a large number of small electrical parts, characterized by having the configurations described in (a) and (b) above. 5. The apparatus for coating the ends of a large number of small electrical parts according to claim 4, wherein the parts have a square cross section, and the passage has a circular cross section. 6. The plate body has a groove provided over the entire area of both sides except for the edge, and a large number of holes arranged vertically and horizontally passing through the area of the groove, and the groove and the hole are located at the center of the hole. The parts forming the passages are filled with elastic plastic, the length of the passage being longer than the length of the part, and the plate body is filled with the grooves and holes. 5. A device for coating the ends of a large number of small electrical parts as claimed in claim 4, characterized in that the device is made of metal except for elastic plastic. 7 (a) Having a plate body with a large number of parallel passages. (b) the channel has resilient walls and has a cross-sectional dimension slightly smaller than the cross-sectional dimension of the small electrical part to be supported, such that the resilient wall of the channel elastically grips the part; A device for coating the ends of a large number of small electrical parts, characterized by having the configurations described in (a) and (b) above. 8. A patent claim characterized in that the plate body has a large number of holes arranged in rows and columns, and the holes are filled with elastic plastic except for forming a passage in the center of the holes. A device for coating the edges of a number of small electrical parts according to item 7. 9. The plate body has grooves on both sides, the elastic plastic is filled in the grooves except for the passages, and the plate body is made of metal except for the elastic plastic filled in the grooves and holes. 9. A device for coating the ends of a large number of small electrical parts as claimed in claim 8, characterized in that it is made of. 10 (a) comprising a support mechanism and a punch mechanism having parallel punches located opposite the support mechanism and fixed integrally and movable as a unit; It has an operating mechanism that can be moved toward the support mechanism. (b) a plate body having a number of parallel through passages, each passage having an elastic wall whose dimensions are smaller than the dimensions of the corresponding small electrical part, into which the part is forced; and the plate body is arranged between the parallel punches and the support mechanism, and the passages are aligned with the punches so that the punches are arranged in the passages. When inserted into the passage, the parts within the passage move to a position where the surface of the part on the side of the plate body is ready for coating. A device for coating the ends of a large number of small electrical parts, characterized by having the configurations described in (a) and (b) above. 11. The plate body has grooves on both sides, and has a large number of through holes arranged vertically and horizontally over the entire area of the groove, and the grooves and holes form a passage in the center of the hole. The plate body is made of metal except for the elastic plastic filled in the grooves and holes. Apparatus for coating the edges of a large number of small electrical parts according to item 10. 12 An auxiliary plate is provided between the row punches and the operation plate, the auxiliary plate having a plurality of holes corresponding to the punches so that the punches can pass through the holes, and the auxiliary plate is arranged to allow the punches to pass through the holes. The punch is supported by a support that is movable vertically relative to the punch, and the support has a stop mechanism that limits the movement of the auxiliary mechanism away from the punch to a position that covers the end of the punch. The punch is protected when the plate body is moved in and out between the punch and the support mechanism, and includes a spring mechanism that presses the auxiliary plate toward the stop mechanism. 11. The apparatus for coating the ends of a large number of small electrical parts according to claim 10, characterized in that an auxiliary plate facilitates peeling off the plate body from the punch when the plate body is pulled out from the passage. 13. An operating mechanism for moving the row punches toward the support mechanism includes a rack fixed to the row punches, and a pinion that meshes with the rack;
11. The apparatus for coating the ends of a large number of small electric parts according to claim 10, further comprising a manually operated handle fixed to the pinion and capable of rotating the pinion. 14 A take-out plate placed on the support mechanism between the operation plate and the support plate, and the take-out plate has a plurality of holes on a surface facing the operation plate at the same position as the passage. a hole, the part is ejected from the passageway by the punch and removed from the passageway by entering the hole; and the extraction plate is configured to remove the part from the support mechanism. 11. A device for coating the ends of a large number of small electrical parts as claimed in claim 10, further comprising an ejectable device. 15 Limiting the movement of the punch within the passage so that the parts located within the passage have one end of each thereof protruding from a corresponding surface of the plate body into a corresponding hole of the extraction plate. and a locking tool that can be selectively used to remove the operating plate from the punch mechanism, and is configured such that an end of the part protruding from the passage can be coated when the operating plate is removed from the punch mechanism. 15. An apparatus for coating the ends of a number of small electrical parts as claimed in claim 14. 16 selectively for restricting movement of the punch within the passageway such that parts located within the passageway have one end of each thereof protruding from a surface of the plate body facing the support mechanism; Claims include: a locking tool that can be used for the punching mechanism, and an end portion of the part protruding from the passage can be coated when the operating plate is removed from the punch mechanism. 10th
Apparatus for coating the edges of a number of small electrical parts as described in Section 1. 17 A storage plate is provided between the row punches and the operation plate and has a large number of through holes at positions corresponding to the passages, and the parts in the holes of the storage plate are removed by using the row punches. can be pushed into the passage, and
a second stop protruding from said passageway and said receptacle selectively operable to limit movement of said punch such that all ends of the part except one end are located within said passageway; For coating the ends of a large number of small electric parts according to claim 16, wherein the ends of the parts remaining in the holes of the plate can be coated by removing the operation plate from the punch mechanism. Device.