JP2006263637A - Adhesive discharge apparatus - Google Patents

Adhesive discharge apparatus Download PDF

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Publication number
JP2006263637A
JP2006263637A JP2005087688A JP2005087688A JP2006263637A JP 2006263637 A JP2006263637 A JP 2006263637A JP 2005087688 A JP2005087688 A JP 2005087688A JP 2005087688 A JP2005087688 A JP 2005087688A JP 2006263637 A JP2006263637 A JP 2006263637A
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Prior art keywords
adhesive
valve body
valve
needle
supplying
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JP4764653B2 (en
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Hiroshi Ogawa
博 小川
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Juki Corp
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Juki Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive discharge apparatus in which the leakage or the dripping of an adhesive from a discharge apparatus is prevented. <P>SOLUTION: The adhesive discharge apparatus is provided with a valve body capable of supplying the adhesive to the inside and comprising a magnetic body, a 2nd throttle part provided at the lower part of the valve body, a needle part provided below the valve body and capable of supplying the adhesive to the inside, a needle valve arranged freely vertically movable in the needle part and always positioned below the needle part, a solenoid coil arranged on the outer periphery of the valve body and attracting the needle valve to the 2nd throttle part by excitation and a syringe for supplying the adhesive to the valve body. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、回路基板上に電子部品を接着するための接着剤吐出装置において、接着剤を常に一定量吐出することができる接着剤吐出装置に関する。   The present invention relates to an adhesive discharge device capable of always discharging a predetermined amount of an adhesive in an adhesive discharge device for bonding an electronic component on a circuit board.

特許文献１に示す接着剤吐出装置は、らせん状の溝を形成した接着剤駆動部材を回転させてノズル孔から接着剤を吐出させる装置が開示されている。   The adhesive discharge apparatus shown in Patent Document 1 discloses an apparatus that rotates an adhesive drive member having a spiral groove to discharge adhesive from a nozzle hole.

特開平１１−５４９８９号公報Japanese Patent Laid-Open No. 11-54989

この装置におけるらせん状接着剤駆動部材は、接着剤を吐出しない場合は回転を停止させるが、らせん状接着剤駆動部材ノズルとの間には隙間が生じ、ノズルは常に開口している状態なので、接着剤駆動部材が回転していない停止状態でも接着剤がノズル孔から漏れたり、或いは垂れ下がるおそれがあった。 The spiral adhesive drive member in this device stops rotating when the adhesive is not discharged, but a gap is formed between the spiral adhesive drive member nozzle and the nozzle is always open, Even when the adhesive driving member is not rotating, the adhesive may leak from the nozzle holes or hang down.

このため、接着剤が漏れた場合には、基板の塗布位置以外の場所に接着剤が塗布されたり、あるいは垂れ下がった場合には次の接着剤の塗布量が多めに塗布されてしまい部品のリード間に付着して接触不良を生じるという問題点があった。   For this reason, if the adhesive leaks, the adhesive is applied to a place other than the application position of the substrate, or if it hangs down, the next adhesive application amount is excessively applied, leading to the component lead. There has been a problem that adhesion occurs between them and a contact failure occurs.

上記課題を解決するために、請求項1に記載の発明は、
内部に接着剤を供給可能な磁性体よりなる弁本体と、弁本体の下部に設けた第２絞り部と、弁本体下方に設けられ、内部に接着剤を供給可能なニードル部と、ニードル部内に上下動可能に遊嵌配置され、常にはニードル部下方に位置するニードル弁と、弁本体の外周に設けられ、励磁によりニードル弁を第２絞り部に吸引するソレノイドコイルと、弁本体に接着剤を供給するシリンジとを備えたものである。 In order to solve the above problem, the invention of claim 1
A valve body made of a magnetic material capable of supplying an adhesive inside, a second throttle part provided at the lower part of the valve body, a needle part provided below the valve body and capable of supplying an adhesive inside, and inside the needle part The needle valve is arranged so as to be movable up and down, and is always located below the needle part. And a syringe for supplying the agent.

請求項２記載の発明は、請求項１記載の発明の弁本体を、内部に接着剤を供給可能な磁性体よりなり内部に第1絞り部を形成した第１弁体と、第1弁体の下方に設けられ内部に接着剤を供給可能な第２弁体と、第2弁体下部に形成した第２絞り部と、第１絞り部と第２絞り部との間に配置した玉弁よりなる構成としたものである。   According to a second aspect of the present invention, the valve main body according to the first aspect of the present invention includes a first valve body made of a magnetic material capable of supplying an adhesive therein and having a first throttle portion formed therein, and a first valve body The second valve body that is provided below and capable of supplying an adhesive therein, the second throttle part formed at the lower part of the second valve body, and the ball valve disposed between the first throttle part and the second throttle part It is set as the structure which consists of.

請求項１に記載の発明によれば、接着剤の漏れ及び接着剤の垂れ下がりを防止し、接着剤の吐出量を一定にすることができるので、漏れによる基板不良、或いは接着剤の垂れ下がりによる塗布量が多目に塗布されるのを防止できるため、部品回路の接触不良を防止できるという効果がある。   According to the first aspect of the present invention, since leakage of the adhesive and dripping of the adhesive can be prevented and the discharge amount of the adhesive can be made constant, application of the substrate due to leakage or application due to dripping of the adhesive is possible. Since it is possible to prevent the amount from being applied to many, there is an effect that it is possible to prevent poor contact of the component circuits.

請求項２に記載の発明によれば、玉弁により接着剤の吐出の制御をおこなっているので、接着剤の吐出量の微量塗布が可能となる。   According to the second aspect of the present invention, since the adhesive discharge is controlled by the ball valve, it is possible to apply a small amount of the adhesive discharge amount.

この発明の実施の形態の例について、図面を参照しながら以下に詳細に説明する。 Examples of embodiments of the present invention will be described in detail below with reference to the drawings.

図１において、１は接着剤吐出装置であり、図２に示すようにＸ方向移動手段２に移動自在に取り付けられたヘッドＨに装着されている。
図１に示すように、この吐出装置１には接着剤３を収納するシリンジ４を備え、チューブ５を介して塗布ノズル６に接続されている。
このシリンジ４はエア加圧方式のシリンジ４で上部に設けたエアチューブ７から加圧エアーが供給され、シリンジ４の空間８及び空間８内に上下動可能に配置した半円球状のプランジャ９を介して接着剤３を加圧する構成となっている。
前記塗布ノズル６は、図３に示すように、チューブ５に接続した磁性体よりなる円筒状の固定鉄心としての第１弁本体１０と、第１弁本体１０の下部に固定し、内部に玉弁としてのボール弁１１Ａを配置した磁性体よりなる円筒状の固定鉄心としての第２弁本体１１と、第２弁本体１１の下部に固定した非磁性体よりなる円筒状のニードル部１２と、ニードル部１２の内部に上下動可能に遊嵌配置したニードル弁１３と、前記第１弁本体１０及び第２弁本体１１の外周に巻回したソレノイドコイル１６とより構成される。 In FIG. 1, reference numeral 1 denotes an adhesive discharge device, which is attached to a head H that is movably attached to an X-direction moving means 2 as shown in FIG.
As shown in FIG. 1, the discharge device 1 includes a syringe 4 that stores an adhesive 3, and is connected to an application nozzle 6 via a tube 5.
This syringe 4 is an air pressurization type syringe 4, which is supplied with pressurized air from an air tube 7 provided at the top thereof, and a syringe 8 having a hemispherical plunger 9 disposed so as to be vertically movable in the space 8. It is the structure which pressurizes the adhesive agent 3 via this.
As shown in FIG. 3, the application nozzle 6 is fixed to a first valve body 10 as a cylindrical fixed iron core made of a magnetic material connected to a tube 5, and a lower part of the first valve body 10, and a ball is formed inside. A second valve body 11 as a cylindrical fixed iron core made of a magnetic body in which a ball valve 11A as a valve is disposed; a cylindrical needle portion 12 made of a non-magnetic body fixed to the lower portion of the second valve body 11; The needle valve 13 includes a needle valve 13 that is loosely fitted inside the needle portion 12 so as to be movable up and down, and a solenoid coil 16 wound around the outer circumferences of the first valve body 10 and the second valve body 11.

尚、ソレノイドコイル１６の周囲は周知のため図示しないがスリープで覆われると共に上下面はフランジで覆われている。
そして、前記バルブ本体１０の下端部は第１絞り部１７が形成され、又、第２弁本体１１の下端部に第２絞り部１８が形成され、ボール弁１１Ａがこの第１絞り部１７、第２絞り部１８間で拘束されるよう構成されている。 そして、図４に示すように、ボール弁１１Ａはその直径を第２弁本体１１内の通路１１Ｂの直径よりも小さく形成されると共に、常にはシリンジ４内のエアー加圧により第２絞り部１８を閉鎖するようになっている。
前記ニードル弁１３の上端部は円錐部１３Ａが設けられ、ニードル弁１３の上昇により第２絞り部１８の下部と当接して第２絞り部１８を閉鎖すると共に、第６図に示すように、閉鎖時に先端部が第２絞り部１８より若干突出し、ボール弁１１Ａと当接してボール弁１１Ａを若干上昇させるような形状となっている。
次にこの発明の最良の形態に係る吐出装置の動作を説明する。
図１に示すように、シリンジ４の空間８には大気圧より高い一定のエアー圧力がエアーチューブ７を介して送られ、接着剤３はプランジャ９を介して常時加圧されている。接着剤３はこのエアー圧力によりチューブ５を通り塗布ノズル６へ送られる。 Although the periphery of the solenoid coil 16 is well known, it is not shown, but it is covered with sleep and the upper and lower surfaces are covered with flanges.
A first throttle portion 17 is formed at the lower end portion of the valve body 10, a second throttle portion 18 is formed at the lower end portion of the second valve main body 11, and the ball valve 11 </ b> A includes the first throttle portion 17, The second diaphragm 18 is configured to be restrained. As shown in FIG. 4, the ball valve 11 </ b> A is formed to have a diameter smaller than the diameter of the passage 11 </ b> B in the second valve main body 11, and is always pressurized by air in the syringe 4 and the second throttle portion 18. Is supposed to be closed.
The upper end of the needle valve 13 is provided with a conical portion 13A. As the needle valve 13 is raised, the needle valve 13 is brought into contact with the lower portion of the second throttle portion 18 to close the second throttle portion 18, and as shown in FIG. At the time of closing, the tip part protrudes slightly from the second throttle part 18 and comes into contact with the ball valve 11A to raise the ball valve 11A slightly.
Next, the operation of the discharge device according to the best mode of the present invention will be described.
As shown in FIG. 1, a constant air pressure higher than atmospheric pressure is sent to the space 8 of the syringe 4 through the air tube 7, and the adhesive 3 is constantly pressurized through the plunger 9. The adhesive 3 is sent to the application nozzle 6 through the tube 5 by this air pressure.

圧力の加わっている接着剤３は、第２弁本体１１の第２絞り部１８をボール弁１１Ａを介して解放することにより第２弁本体１１からニードル部１２へ送られる。   The adhesive 3 to which pressure is applied is sent from the second valve body 11 to the needle part 12 by releasing the second throttle part 18 of the second valve body 11 via the ball valve 11A.

ボール弁１１Ａの解放はソレノイドコイル１６を励磁することにより、図４の状態から図５の状態を経て図６に示すようにニードル弁１３が固定鉄心を構成する第２弁本体１１の第２絞り部１８へ吸引され、第２絞り部１８が閉鎖される。   The ball valve 11A is released by exciting the solenoid coil 16 so that the needle valve 13 forms a fixed iron core as shown in FIG. Suction to the portion 18 closes the second throttle portion 18.

図６の状態において、ニードル弁１３の頂部がボール弁１１Ａを押し上げて第２絞り部１８を閉鎖している。   In the state of FIG. 6, the top of the needle valve 13 pushes up the ball valve 11 </ b> A and closes the second throttle portion 18.

第２絞り部１８がニードル弁１３により閉鎖されているため接着剤３はニードル部１２内へ移動することはできない。そして、ボール弁１１Ａの押し上げにより、図８に示すように、ボール弁１１Ａと第２絞り部１８間に隙間Ｓが生じ、この隙間Ｓにニードル部１２内の接着剤３が流れ込んでいる。   Since the second throttle portion 18 is closed by the needle valve 13, the adhesive 3 cannot move into the needle portion 12. Then, by pushing up the ball valve 11A, as shown in FIG. 8, a gap S is generated between the ball valve 11A and the second throttle portion 18, and the adhesive 3 in the needle portion 12 flows into the gap S.

その後、接着剤塗布のためソレノイドコイル１６の励磁を切ると、図７に示すように、ニードル弁１３が下降し、シリンジ４内のエアー加圧による接着剤３の圧力によりボール弁１１Ａが第２絞り部１８へ押し付けられて第２絞り部１８を閉鎖する。このとき、図８の隙間Ｓに流れ込んだ接着剤３に相当する量の接着剤３が図７に示す第２弁本体１１とニードル弁１３の円錐部１３Ａとの隙間からニードル部１２内へ移動し、この量に相当する量の接着剤３がニードル部１２の下方先端部から吐出され、基板に塗布される。   Thereafter, when the solenoid coil 16 is de-energized for adhesive application, as shown in FIG. 7, the needle valve 13 is lowered, and the ball valve 11A is second due to the pressure of the adhesive 3 by the air pressurization in the syringe 4. The second restrictor 18 is closed by being pressed against the restrictor 18. At this time, an amount of the adhesive 3 corresponding to the adhesive 3 flowing into the gap S in FIG. 8 moves into the needle portion 12 from the gap between the second valve body 11 and the conical portion 13A of the needle valve 13 shown in FIG. Then, an amount of the adhesive 3 corresponding to this amount is discharged from the lower end portion of the needle portion 12 and applied to the substrate.

図９は、この発明の第２の実施形態を示すもので、第１の実施形態の構成に加え、ボール弁１１Ａと第１弁本体１０の第１絞り部１７下方との間に、常にはボール弁１１Ａを第２絞り部１８に押圧するスプリング１９を配置したものである。   FIG. 9 shows a second embodiment of the present invention. In addition to the configuration of the first embodiment, the ball valve 11 </ b> A and the first throttle body 17 below the first valve body 10 are always arranged. A spring 19 that presses the ball valve 11A against the second throttle portion 18 is disposed.

この実施形態によれば、ボール弁１１Ａには、エアーによる加圧力だけでなくスプリング１９による加圧力が常時加わるため第２絞り部１８の閉鎖をより確実で、応答性を向上することができ、より正確な塗布が行えるという効果がある。   According to this embodiment, not only the pressurizing force by air but also the pressurizing force by the spring 19 is constantly applied to the ball valve 11A, so that the second throttle portion 18 can be more reliably closed and the responsiveness can be improved. There is an effect that more accurate application can be performed.

図１０は、この発明の第３の実施形態を示すもので、玉弁としてのボール弁１１Ａの形状を円柱状の縦長のカプセル型弁１１Ｂに構成すると共に、ニードル弁１３の円錐部１３Ａの頂部に突出部１３Ｂを設け、第１弁本体１０と第２弁本体１１とをネジＤで接続し、ネジＤの調整により第２弁本体１１を上下移動調節可能にしたものである。   FIG. 10 shows a third embodiment of the present invention, in which the ball valve 11A as a ball valve is formed into a cylindrical vertically long capsule type valve 11B and the top of the conical portion 13A of the needle valve 13 is shown. The first valve main body 10 and the second valve main body 11 are connected by a screw D, and the second valve main body 11 can be adjusted up and down by adjusting the screw D.

この実施形態によれば、弁本体１１の上下位置がネジＤの調節により可能となると共に、突出部１３Ｂがニードル弁１３の頂部に設けてあるので、ネジＤの調節により接着剤の吐出量の微調整が行えるという効果がある。   According to this embodiment, the vertical position of the valve body 11 can be adjusted by adjusting the screw D, and the protrusion 13B is provided on the top of the needle valve 13, so that the amount of adhesive discharged can be adjusted by adjusting the screw D. There is an effect that fine adjustment can be performed.

図１１は、この発明の第４の実施形態を示すもので、前述した最良の実施形態におけるボール弁１１Ａ、及び第１絞り部１７を省略した構成である。このため、第２弁本体１１と第１弁本体１０を一体に形成した弁本体Ｖすることが可能となった。   FIG. 11 shows a fourth embodiment of the present invention, in which the ball valve 11A and the first throttle portion 17 in the above-described best embodiment are omitted. For this reason, the valve body V in which the second valve body 11 and the first valve body 10 are integrally formed can be realized.

この実施形態によれば、ソレノイドコイル１６の励磁によりニードル弁１３が弁本体Ｖの第２絞り部１８方向へ吸引され上昇する。そして、第２絞り部１８が閉鎖される。すると、ニードル弁１３下部とニードル部１２下方との間に隙間が生じ、この隙間にニードル部１２内の接着剤３が流れ込む。その後、ソレノイドコイル１６の励磁を切ると、ニードル弁１３が下降する。このとき、前記隙間に流れ込んだ接着剤３に相当する量の接着剤３がニードル弁１３の下降と共にニードル部１２の下方先端部から吐出され、基板に塗布される。   According to this embodiment, the needle valve 13 is attracted and raised in the direction of the second throttle portion 18 of the valve body V by the excitation of the solenoid coil 16. And the 2nd aperture | diaphragm | squeeze part 18 is closed. Then, a gap is generated between the lower part of the needle valve 13 and the lower part of the needle part 12, and the adhesive 3 in the needle part 12 flows into this gap. Thereafter, when the solenoid coil 16 is de-energized, the needle valve 13 is lowered. At this time, an amount of the adhesive 3 corresponding to the adhesive 3 that has flowed into the gap is discharged from the lower tip of the needle portion 12 as the needle valve 13 is lowered, and is applied to the substrate.

この実施形態によれば、ボール弁１１Ａ、第１絞り部１７を設ける構成ではないので、装置自体の構成を簡潔にすることができる。   According to this embodiment, since the ball valve 11A and the first throttle portion 17 are not provided, the configuration of the device itself can be simplified.

本発明に係る一実施形態の接着剤吐出装置の断面図。Sectional drawing of the adhesive agent discharge apparatus of one Embodiment which concerns on this invention. 本発明に係る接着剤吐出装置を備えた接着剤塗布装置の全体斜視図。1 is an overall perspective view of an adhesive application device provided with an adhesive discharge device according to the present invention. 本発明に係る塗布ノズルの一実施形態の断面図。Sectional drawing of one Embodiment of the coating nozzle which concerns on this invention. 本発明に係る塗布のズルの一実施形態の動作説明断面図。Operation | movement explanatory sectional drawing of one Embodiment of the application | coating swell which concerns on this invention. 本発明に係る塗布のズルの一実施形態の動作説明断面図。Operation | movement explanatory sectional drawing of one Embodiment of the application | coating swell which concerns on this invention. 本発明に係る塗布のズルの一実施形態の動作説明断面図。Operation | movement explanatory sectional drawing of one Embodiment of the application | coating swell which concerns on this invention. 本発明に係る塗布のズルの一実施形態の動作説明断面図。Operation | movement explanatory sectional drawing of one Embodiment of the application | coating swell which concerns on this invention. 本発明に係る塗布ノズルの一実施形態の要部動作説明断面図。The principal part operation | movement description sectional drawing of one Embodiment of the coating nozzle which concerns on this invention. 本発明に係る塗布のズルの他の実施形態の断面図。Sectional drawing of other embodiment of the application | coating swell which concerns on this invention. 本発明に係る塗布のズルの他の実施形態の断面図。Sectional drawing of other embodiment of the application | coating swell which concerns on this invention. 本発明に係る塗布のズルの他の実施形態の断面図。Sectional drawing of other embodiment of the application | coating swell which concerns on this invention.

符号の説明Explanation of symbols

４ シリンジ
Ｖ 弁本体
１０ 第１弁本体
１１ 第２弁本体
１３ ニードル弁
１６ ソレノイドコイル
１７ 第１絞り部
１８ 第２絞り部

4 Syringe V Valve body 10 First valve body 11 Second valve body 13 Needle valve 16 Solenoid coil 17 First restrictor 18 Second restrictor

Claims (2)

内部に接着剤を供給可能な磁性体よりなる弁本体と、
弁本体の下部に設けた第２絞り部と、
弁本体下方に設けられ、内部に接着剤を供給可能なニードル部と、
ニードル部内に上下動可能に遊嵌配置され、常にはニードル部下方に
位置するニードル弁と、
弁本体の外周に設けられ、励磁によりニードル弁を第２絞り部に吸引
するソレノイドコイルと、
弁本体に接着剤を供給するシリンジと、
を備えたことを特徴とする接着剤吐出装置。 A valve body made of a magnetic material capable of supplying an adhesive inside;
A second throttle provided at the bottom of the valve body;
A needle part provided below the valve body and capable of supplying an adhesive inside;
A needle valve that is loosely fitted in the needle part so as to be movable up and down, and is always located below the needle part,
A solenoid coil that is provided on the outer periphery of the valve body and sucks the needle valve to the second throttle portion by excitation;
A syringe for supplying an adhesive to the valve body;
An adhesive discharge device comprising: 前記弁本体は内部に接着剤を供給可能な磁性体よりなり内部に第1絞り部を形成した第１弁体と、第1弁体の下方に設けられ内部に接着剤を供給可能な第２弁体と、第2弁体下部に形成した第２絞り部と、第１絞り部と第２絞り部との間に配置した玉弁よりなることを特徴とする
接着剤吐出装置。






















The valve body is made of a magnetic material capable of supplying an adhesive therein and has a first valve body having a first throttle portion formed therein, and a second valve body provided below the first valve body and capable of supplying an adhesive therein. An adhesive discharge device comprising: a valve body; a second throttle portion formed in a lower portion of the second valve body; and a ball valve disposed between the first throttle portion and the second throttle portion.






















JP2005087688A 2005-03-25 2005-03-25 Adhesive dispenser Expired - Fee Related JP4764653B2 (en)

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* Cited by examiner, † Cited by third party
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JPS50154523A (en) * 1974-05-30 1975-12-12
JPS5193421A (en) * 1975-02-14 1976-08-16 Haishutsukokarano rakutekihatsuseiyobosochi
JPS5529725Y2 (en) * 1974-06-06 1980-07-15
JPS58152988A (en) * 1982-03-09 1983-09-10 Saginomiya Seisakusho Inc Reversible magnet valve
JPS59150565A (en) * 1983-02-18 1984-08-28 Hitachi Plant Eng & Constr Co Ltd Airless coater
JPS6113076A (en) * 1984-06-27 1986-01-21 Matsushita Electric Ind Co Ltd Nozzle apparatus for discharging liquid
JPS6155974A (en) * 1984-08-27 1986-03-20 Nec Corp Constant-voltage diode
JPH043172A (en) * 1990-04-20 1992-01-08 Orient Chem Ind Ltd Magenta toner for developing electrostatic charge image and associated technique thereof
JP2002361143A (en) * 2001-06-04 2002-12-17 Matsushita Electric Ind Co Ltd Fluid application method and fluid application apparatus
JP2003280015A (en) * 2002-02-27 2003-10-02 Lg Phillips Lcd Co Ltd Apparatus for dispensing liquid crystal and method for controlling liquid crystal dropping amount
JP2004009351A (en) * 2002-06-04 2004-01-15 Marktec Corp Controlling method for electromagnetic type dot marking device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50154523A (en) * 1974-05-30 1975-12-12
JPS5529725Y2 (en) * 1974-06-06 1980-07-15
JPS5193421A (en) * 1975-02-14 1976-08-16 Haishutsukokarano rakutekihatsuseiyobosochi
JPS58152988A (en) * 1982-03-09 1983-09-10 Saginomiya Seisakusho Inc Reversible magnet valve
JPS59150565A (en) * 1983-02-18 1984-08-28 Hitachi Plant Eng & Constr Co Ltd Airless coater
JPS6113076A (en) * 1984-06-27 1986-01-21 Matsushita Electric Ind Co Ltd Nozzle apparatus for discharging liquid
JPS6155974A (en) * 1984-08-27 1986-03-20 Nec Corp Constant-voltage diode
JPH043172A (en) * 1990-04-20 1992-01-08 Orient Chem Ind Ltd Magenta toner for developing electrostatic charge image and associated technique thereof
JP2002361143A (en) * 2001-06-04 2002-12-17 Matsushita Electric Ind Co Ltd Fluid application method and fluid application apparatus
JP2003280015A (en) * 2002-02-27 2003-10-02 Lg Phillips Lcd Co Ltd Apparatus for dispensing liquid crystal and method for controlling liquid crystal dropping amount
JP2004009351A (en) * 2002-06-04 2004-01-15 Marktec Corp Controlling method for electromagnetic type dot marking device

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