JP5288910B2 - Casting device - Google Patents

Casting device Download PDF

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JP5288910B2
JP5288910B2 JP2008172733A JP2008172733A JP5288910B2 JP 5288910 B2 JP5288910 B2 JP 5288910B2 JP 2008172733 A JP2008172733 A JP 2008172733A JP 2008172733 A JP2008172733 A JP 2008172733A JP 5288910 B2 JP5288910 B2 JP 5288910B2
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casting
sand mold
hook
hanger
mold
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JP2010012480A (en
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卓三 林
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Kitagawa Iron Works Co Ltd
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Kitagawa Iron Works Co Ltd
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Description

本発明は、砂型を使用して鋳造物を鋳造した後に鋳造物を砂型から取り出す鋳造物の取り出し装置に関する。   The present invention relates to a casting takeout device for taking a cast from a sand mold after casting the cast using a sand mold.

一般に鋳造後に砂型から鋳造物を取り出すに際し、鋳造物を砂型から取り出すことが知られている。
例えば、特許文献１に記載の装置によれば、鋳造物には係合部位である係合部が備えられており、砂型を水平に搬送するベルトコンベアで搬送し、そのベルトコンベアの端部から砂型を押し出す押し出し部材が設けられている。
砂型が押し出される先方には鋳造物に設けた係合部へ係合するフックが略水平に位置決めされている。 In general, it is known to remove a casting from the sand mold when the casting is taken out from the sand mold after casting.
For example, according to the apparatus described in Patent Document 1, the casting is provided with an engaging portion that is an engaging portion, and is conveyed by a belt conveyor that horizontally conveys the sand mold, and from the end of the belt conveyor. An extrusion member for extruding the sand mold is provided.
A hook that engages with an engaging portion provided in the casting is positioned substantially horizontally at the tip of the sand mold.

ベルトコンベアで搬送された砂型から鋳造物を取り出す際には、砂型はベルトコンベアの端部で押し出し部材によりベルトコンベアから押し出される。押し出された砂型は、先方に設けられたフックの先端に前方から衝突する。
フックの衝突により、砂型の前方端部が崩され、フックが鋳造物に設けられた係合部の直下へ配置される。
この状態で砂型が自重で下がり、鋳造物の係合部がフックと係合して鋳造物のみがフックに吊り下げられ、砂型は崩れて落下する。
特開平７−２８４９１２号公報 When the casting is taken out from the sand mold conveyed by the belt conveyor, the sand mold is pushed out of the belt conveyor by the pushing member at the end of the belt conveyor. The extruded sand mold collides from the front with the tip of the hook provided at the front.
Due to the collision of the hook, the front end portion of the sand mold is broken, and the hook is disposed immediately below the engaging portion provided in the casting.
In this state, the sand mold is lowered by its own weight, the engaging portion of the casting is engaged with the hook, and only the casting is suspended from the hook, and the sand mold collapses and falls.
JP-A-7-284912

しかしながら、前述の鋳造物の取り出し装置によると、砂型をフックへ衝突させて砂型の先端を崩してフックを鋳造物の係合部位である係合部の直下へ位置決めして鋳造物を吊り下げているので、まずフックにより砂型を崩す必要が生じる。
しかし、砂型は鋳造物の成形精度を高めるためにやわらかくすることはできず、容易に崩し易くできない。
そのため、フックを衝突させても十分に砂型を崩すことができず、フックを鋳造物の係合部の直下である所定の位置へ正確に配置することが困難となり、確実に鋳造物をフックへ吊り下げることができず、鋳造物を取り出すことができないという問題が発生する。
したがって、本発明は簡単に砂型を崩すことができ、鋳造物を容易に砂型から取り出すことのできる鋳造物の取り出し装置を提供することを目的とする。 However, according to the above-described casting take-out device, the sand mold is collided with the hook, the tip of the sand mold is broken, the hook is positioned directly below the engaging portion which is the engaging portion of the casting, and the casting is suspended. Therefore, it is necessary to break the sand mold with the hook first.
However, the sand mold cannot be softened to increase the molding accuracy of the casting, and cannot be easily broken down.
For this reason, the sand mold cannot be sufficiently broken even if the hook collides, and it becomes difficult to accurately place the hook at a predetermined position directly below the engaging portion of the casting, so that the casting is reliably transferred to the hook. There is a problem that the cast cannot be taken out because it cannot be suspended.
Accordingly, an object of the present invention is to provide an apparatus for taking out a casting, which can easily break the sand mold and can easily take out the casting from the sand mold.

前記の課題を解決するため、本発明は、砂型を使用して鋳造物を鋳造した後に前記鋳造物を砂型から取り出す鋳造物の取り出し装置において、砂型を搬送するベルトコンベアと、該ベルトコンベア上の砂型から鋳造物を取り出してハンガーへ移動させるアーム部を有し、前記アーム部が鋳造物を吊り下げるフックを備え、前記アーム部がフックに吊り下げた鋳造物をハンガーへ移動させる際にアーム部とハンガーの相対的に位置を一致させる位置合わせ手段を備えることを特徴とする。
In order to solve the above-mentioned problems, the present invention provides a casting takeout apparatus for taking out a cast from a sand mold after casting the cast using a sand mold, and a belt conveyor for conveying the sand mold, It has an arm part that takes out the casting from the sand mold and moves it to the hanger, the arm part has a hook for hanging the casting, and the arm part moves the casting that is hung on the hook to the hanger. And a positioning means for relatively matching the positions of the hangers .

また、前記位置合わせ手段がアーム部へハンド部を備え、該ハンド部がハンガーの両端側で外方から内方へ移動することで位置合わせを行うことを特徴とする。
また、前記位置合わせ手段がアーム部へ位置検出センサーを備え、前記アーム部の動作を制御することで位置合わせを行うことを特徴とする。
Further, the positioning means includes a hand portion on the arm portion, and the hand portion performs positioning by moving from the outside to the inside on both ends of the hanger .
Further, the positioning means includes a position detection sensor on the arm portion, and the positioning is performed by controlling the operation of the arm portion.

本発明によれば、簡単に砂型を崩すことができ、鋳造物を容易に砂型から取り出すことができ、また、位置合わせ手段を備えることにより、アーム部とハンガーに位置合わせを容易に行うことができるので、効率よく鋳造物の取り出し作業を行なうことができ、作業時間の短縮に寄与できる。 According to the present invention, the sand mold can be easily broken, the casting can be easily taken out of the sand mold , and the positioning of the arm part and the hanger can be easily performed by providing the positioning means. It can Runode, extraction work efficiently casting that can performed, can contribute to shortening of the working time.

以下に本発明の実施例について図を用いて説明する。
図１は、本発明の実施例における砂型と鋳造物の取り出す前の状態を示す概略図である。
図２は、実施例の鋳造物とフックが係合した状態を示す部分拡大図である。
図３は、実施例の鋳造物の取り出す直前を示す側断面図である。
図４は、フックが砂型へ突入した状態を示す断面拡大図である。
図５はフックが鋳造物を吊り下げた状態でハンガーと対峙している状態を示す側面拡大図である。
図６は、Ａ−Ａ矢視による断面図である。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic view showing a state before taking out a sand mold and a casting in an embodiment of the present invention.
FIG. 2 is a partially enlarged view showing a state in which the casting of the embodiment is engaged with the hook.
FIG. 3 is a side sectional view showing the state immediately before the casting of the embodiment is taken out.
FIG. 4 is an enlarged cross-sectional view showing a state in which the hook has entered the sand mold.
FIG. 5 is an enlarged side view showing a state where the hook faces the hanger with the cast suspended.
FIG. 6 is a cross-sectional view taken along the line AA.

鋳造物１４を鋳造する際には、図１に示すように、図示しない型枠内に砂込めして成形された砂型１を使用して鋳造物１４を鋳造する。
この型枠は内部に生砂（以下、砂という）を収納して砂型１を形成する。
型枠は、上型を形成する上枠と、下型を形成する下枠とから構成されている。
鋳造物１４は上型と下型との合わせ面付近で成形され、砂型の製品成形部において成形される製品部２と、湯口や湯道４などにおいて成形される方案部３とから構成されている。
本実施例では前述のように砂型１を上型と下型で構成する水平割りの形態で示しているが、一般に砂型１はこの水平割りの形態に限定するものではなく、鋳造物１４の形状に応じて砂型１を前方と後方に分割とする前型と後型で構成する垂直割りの形態になす場合もある。
鋳造物１４の方案部３は図２に示されるように、各々の製品部２を互いに連結するとともに、鋳造物１４の周囲へ張り出しており、張り出し部の末端が平面Ｔ字形に成形されている。この張り出し部を以後係合部５という。 When casting the casting 14, as shown in FIG. 1, the casting 14 is cast using a sand mold 1 that is formed by sanding in a mold (not shown).
This mold forms a sand mold 1 by containing raw sand (hereinafter referred to as sand) inside.
The mold frame is composed of an upper frame that forms an upper mold and a lower frame that forms a lower mold.
The casting 14 is formed in the vicinity of the mating surface of the upper mold and the lower mold, and is composed of a product section 2 molded in a sand mold product molding section and a design section 3 molded in a gate or a runner 4. Yes.
In the present embodiment, as described above, the sand mold 1 is shown in a horizontally divided form in which the upper mold and the lower mold are configured. However, the sand mold 1 is not limited to this horizontally divided form. Depending on the situation, the sand mold 1 may be divided vertically into a front mold and a rear mold.
As shown in FIG. 2, the plan part 3 of the casting 14 connects the respective product parts 2 to each other and projects to the periphery of the casting 14, and the end of the projecting part is formed into a flat T-shape. . This overhanging portion is hereinafter referred to as an engaging portion 5.

また、前記砂型１は、図３に示すように内方へ空間を備える空洞部６を有して成形されている。
砂型１の空洞部６は鋳造する鋳造物１４とは別の形状の模型を用いて、鋳造する鋳造物１４とは分かれて、砂型１に空間を成形させて、空洞部６を形成する。 The sand mold 1 is molded with a cavity 6 having a space inward as shown in FIG.
The cavity 6 of the sand mold 1 is separated from the cast 14 to be cast using a model having a shape different from that of the cast 14 to be cast, and the cavity 6 is formed by forming a space in the sand mold 1.

前記砂型１に注湯を行なう場所から砂型１を崩して鋳造物１４と取り出す場所へ搬送するためにベルトコンベア９が設けられている。
ベルトコンベア９は、注湯された砂型１を、冷却を行なう冷却経路を通過させて砂型１を崩して鋳造物１４を取り出す場所へと搬送をおこなう。
ベルトコンベア９の進行方向先方には砂型１から鋳造物１４を分離させて鋳造物１４のみを取り出すアーム部７が設けられている。
アーム部７は、移動自在のロボットアームに構成されており、図４に示すようにアーム部７の先端部には鋳造物１４を吊り下げるフック８が設けられている。
フック８は鋳造物１４の方案部３に成形された係合部５に係合することで鋳造物１４を吊り下げられるように配置されている。 A belt conveyor 9 is provided in order to break the sand mold 1 from a place where pouring hot water into the sand mold 1 and transport it to a place where the cast 14 is taken out.
The belt conveyor 9 transports the poured sand mold 1 to a place where the sand mold 1 is broken and the casting 14 is taken out through a cooling path for cooling.
An arm portion 7 for separating the casting 14 from the sand mold 1 and taking out only the casting 14 is provided at the front side of the belt conveyor 9 in the traveling direction.
The arm portion 7 is configured as a movable robot arm, and as shown in FIG. 4, a hook 8 for suspending the casting 14 is provided at the distal end portion of the arm portion 7.
The hook 8 is arranged so that the casting 14 can be suspended by engaging with the engaging portion 5 formed in the plan portion 3 of the casting 14.

前記フック８は別途設けられたモーターにより、先端突入部位であるドリル１０が回転自在に設けられている。アーム部７の前進移動に合わせてドリル１０が回転しつつ砂型１に形成された空洞部６へ突入されるようになされている。
ドリル１０は、通常の工具用ドリルやリーマと同じ形状で構成されている。しかしながらこれに限定するものではなく、ドリル１０は砂型１へ突入を容易にできるように先端部位が鋭利な角度を備えているもので構成されている。 The hook 8 is rotatably provided with a drill 10 which is a tip entry portion by a separately provided motor. The drill 10 rotates into the cavity 6 formed in the sand mold 1 in accordance with the forward movement of the arm 7.
The drill 10 has the same shape as a normal tool drill or reamer. However, the present invention is not limited to this, and the drill 10 is configured such that the tip portion has a sharp angle so that the sand mold 1 can be easily entered.

また、前記アーム部７は、吊り下げた鋳造物１４をベルトコンベア９の上から取り出し、フック８で吊り下げた状態で別途設けられたハンガー１１へ移動させる。
その際に、図５に示すようにアーム部７とハンガー１１の位置を相対的に一致させて鋳造物１４をフック８からハンガー１１へスムーズに移動させる必要がある。
そのため、アーム部７にはハンガー１１の両側を外方より把持する把持部材１２が備えられている。
把持部材１２はハンガー１１の両端側の外方から内方へ移動するハンド部１３を備えている。このハンド部１３が図６に示すように外方からハンガー１１の両端側を把持して、ハンガー１１とアーム部７を一体となし、相対的に位置関係を一致させて位置合わせを行なう。 Further, the arm part 7 takes out the suspended casting 14 from the belt conveyor 9 and moves it to the hanger 11 provided separately in a state where it is suspended by the hook 8.
At that time, it is necessary to move the casting 14 smoothly from the hook 8 to the hanger 11 by relatively matching the positions of the arm portion 7 and the hanger 11 as shown in FIG.
Therefore, the arm part 7 is provided with a gripping member 12 that grips both sides of the hanger 11 from the outside.
The gripping member 12 includes a hand portion 13 that moves from the outside to the inside on both ends of the hanger 11. As shown in FIG. 6, the hand portion 13 grips both ends of the hanger 11 from the outside, and the hanger 11 and the arm portion 7 are integrated so that the positional relationship is relatively matched.

次に、本発明の鋳造物１４の取り出し装置における実施例の動作の説明を行なう。
まず、型枠内に模型が位置決めされて砂込めが行なわれて砂型１が成形される。
この際、所望する鋳造物１４の模型とは別体に空洞部６を形成するための模型も配設されて砂込めが行なわれる。
これにより注湯が行なわれて鋳造物１４が鋳造される空間とは別に、注湯が行なわれない空洞部６が砂型に成形される。 Next, the operation of the embodiment of the casting device take-out device of the present invention will be described.
First, the model is positioned in the mold, and sand filling is performed to form the sand mold 1.
At this time, a model for forming the cavity 6 is also provided separately from the desired model of the cast 14 and sanding is performed.
As a result, the cavity 6 where no pouring is performed is formed into a sand mold separately from the space where pouring is performed and the casting 14 is cast.

砂型１が完成すると、砂型１へ溶湯が注入される。
注湯後、所定時間が経過して砂型１内の溶湯が凝固すると、図１に示すように砂型１内には模型と同形状の鋳造物が成形される。
溶湯が凝固すると、砂型１はベルトコンベア９に積載されて砂バラシ位置まで搬送される。図３に示すように砂型１がベルトコンベア９により所定の位置へ配置されると、アーム部７が砂型１への移動を開始する。 When the sand mold 1 is completed, the molten metal is poured into the sand mold 1.
When a predetermined time elapses after pouring and the molten metal in the sand mold 1 is solidified, a cast having the same shape as the model is formed in the sand mold 1 as shown in FIG.
When the molten metal solidifies, the sand mold 1 is loaded on the belt conveyor 9 and conveyed to the sand ball position. As shown in FIG. 3, when the sand mold 1 is placed at a predetermined position by the belt conveyor 9, the arm portion 7 starts moving to the sand mold 1.

まず、アーム部７の先端に備えられたフック８が回転しつつ、砂型１の空洞部６の位置へ突入される。
砂型１へ突入したフック８は回転しながら砂型１の内方へ押し入り、回転部位の先端部のドリル１０が砂型１の内方に設けられた空洞部６に達する。 First, the hook 8 provided at the tip of the arm portion 7 is rotated and rushed into the position of the cavity portion 6 of the sand mold 1.
The hook 8 that has entered the sand mold 1 is pushed into the sand mold 1 while rotating, and the drill 10 at the tip of the rotating portion reaches the cavity 6 provided inside the sand mold 1.

砂型１は空洞部６までフック８が到達したことにより、空洞部６の周囲の砂が崩される。フック８が回転しつづけることで、さらに砂型１の崩壊が進行され、フック８が砂型１へ突入された状態で砂型１を崩していく。
砂型１の内方に空洞部６を形成することで、フック８の突入を容易とし、且つ突入したフック８の回転動作によって砂型１が崩れ易くなり、従来の均一に充満した砂型１とは異なり、簡単に砂型１を崩すことができる。 In the sand mold 1, when the hook 8 reaches the cavity 6, the sand around the cavity 6 is broken. As the hook 8 continues to rotate, the collapse of the sand mold 1 further proceeds, and the sand mold 1 is broken in a state where the hook 8 has entered the sand mold 1.
By forming the hollow portion 6 inside the sand mold 1, the hook 8 can be easily plunged, and the sand mold 1 is easily collapsed by the rotational movement of the hook 8 that has been plunged, unlike the conventional uniformly filled sand mold 1. The sand mold 1 can be easily broken.

砂型１へ突入したフック８は回転しながらさらに砂型１の奥まで侵入し、鋳造物１４の係合部５に達し、図４に示すようにフック８が鋳造物１４の方案部３に形成された係合部５と係合して、鋳造物１４を吊り下げる。
鋳造物１４はフック８に吊り下げられることで砂型１と分離される。 The hook 8 that has entered the sand mold 1 further penetrates into the sand mold 1 while rotating and reaches the engaging portion 5 of the casting 14, and the hook 8 is formed in the plan portion 3 of the casting 14 as shown in FIG. The casting 14 is suspended by engaging with the engaging portion 5.
The casting 14 is separated from the sand mold 1 by being suspended from the hook 8.

アーム部７はフック８にて鋳造物１４を吊り下げた状態で移動し、ハンガー１１の配置位置へ鋳造物１４を搬送する。
図５に示すようにアーム部７がハンガー１１と対向する位置に移動すると、アーム部７の先端部位に設けられた位置合わせ手段により、アーム部７とハンガー１１の位置合わせが行なわれる。
位置合わせ手段としてアーム部７に設けられた把持部材１２はハンガー１１の両端側の外方から内方へ移動するハンド部１３を備えている。
ハンド部１３が外方から内方へ移動することでハンガー１１の両端側を把持する。
これにより、ハンガー１１とアーム部７を一体となし、相対的に位置関係を一致させて位置合わせを行なう。 The arm portion 7 moves in a state where the casting 14 is suspended by the hook 8, and conveys the casting 14 to the arrangement position of the hanger 11.
As shown in FIG. 5, when the arm portion 7 moves to a position facing the hanger 11, the arm portion 7 and the hanger 11 are aligned by the alignment means provided at the tip portion of the arm portion 7.
A gripping member 12 provided on the arm portion 7 as positioning means includes a hand portion 13 that moves from the outside on both ends of the hanger 11 to the inside.
As the hand portion 13 moves from the outside to the inside, the both ends of the hanger 11 are gripped.
Thereby, the hanger 11 and the arm part 7 are united, and alignment is performed by relatively matching the positional relationship.

また、本発明の他の実施例としては、アーム部７の先端部位へ位置検出用センサーを備え、アーム部７の位置合わせ動作をセンサーの検出位置により制御を行なう。
本実施例の鋳造物取り出し装置は、アーム部７の先端部位へ鋳造物の係合部の位置を検出する位置検出センサーを備えることにより、砂型１へ突入させるフック８の突入位置を鋳造物１４の係合部５の位置へ位置合わせを行なってアーム部７の動作を制御することができる。
これにより、アーム部７のフック８が正確に鋳造物１４の係合部５を係合できる位置へ突入することができ、フック８が確実に鋳造物１４の係合部５を捕らえて、鋳造物１４を常に誤り無く吊り下げることができる。
As another embodiment of the present invention, a sensor for position detection is provided at the distal end portion of the arm portion 7, and the alignment operation of the arm portion 7 is controlled by the detection position of the sensor.
The casting removal apparatus of the present embodiment is provided with a position detection sensor that detects the position of the engaging portion of the casting at the tip portion of the arm portion 7, so that the casting position of the hook 8 that enters the sand mold 1 is set as the casting 14. It is possible to control the operation of the arm portion 7 by aligning with the position of the engaging portion 5.
As a result, the hook 8 of the arm portion 7 can enter the position where the engaging portion 5 of the casting 14 can be accurately engaged, and the hook 8 reliably catches the engaging portion 5 of the casting 14 and casts. The object 14 can always be suspended without error.

本発明の実施例における砂型と鋳造物の取り出す前の状態を示す概略図である。It is the schematic which shows the state before taking out the sand type | mold and casting in the Example of this invention. 実施例の鋳造物とフックが係合した状態を示す部分拡大図である。It is the elements on larger scale which show the state which the casting of the Example and the hook engaged. 実施例の鋳造物の取り出す直前を示す側断面図である。It is a sectional side view which shows immediately before taking out the casting of an Example. ックが砂型へ突入した状態を示す断面拡大図である。It is a cross-sectional enlarged view which shows the state which the hook rushed into the sand mold. フックが鋳造物を吊り下げた状態でハンガーと対峙している状態を示す側面拡大図である。It is a side surface enlarged view which shows the state which the hook has faced the hanger in the state which suspended the casting. Ａ−Ａ矢視による断面図である。It is sectional drawing by AA arrow.

符号の説明Explanation of symbols

１ 砂型
２ 製品部
３ 方案部
５ 係合部
６ 空洞部
７ アーム部
８ フック
１１ ハンガー
１２ 把持部材
１３ ハンド部
１４ 鋳造物 DESCRIPTION OF SYMBOLS 1 Sand mold 2 Product part 3 Plan part 5 Engagement part 6 Cavity part 7 Arm part 8 Hook 11 Hanger 12 Holding member 13 Hand part 14 Casting

Claims (3)

砂型を使用して鋳造物を鋳造した後に前記鋳造物を砂型から取り出す鋳造物の取り出し装置において、砂型を搬送するベルトコンベアと、該ベルトコンベア上の砂型から鋳造物を取り出してハンガーへ移動させるアーム部を有し、前記アーム部が鋳造物を吊り下げるフックを備え、前記アーム部がフックに吊り下げた鋳造物をハンガーへ移動させる際にアーム部とハンガーの相対的に位置を一致させる位置合わせ手段を備えることを特徴とする鋳造物の取り出し装置。 In a casting take-out device for taking out a casting from a sand mold after casting the casting using a sand mold, a belt conveyor for conveying the sand mold and an arm for taking the casting from the sand mold on the belt conveyor and moving it to a hanger The arm portion is provided with a hook for suspending the casting, and the arm portion and the hanger are aligned relatively to each other when the casting that is suspended from the hook is moved to the hanger. An apparatus for taking out a casting, characterized by comprising means. 前記位置合わせ手段がアーム部へハンド部を備え、該ハンド部がハンガーの両端側で外方から内方へ移動することで位置合わせを行うことを特徴とする請求項１記載の鋳造物の取り出し装置。 2. The casting according to claim 1, wherein the positioning means includes a hand portion on the arm portion, and the hand portion is positioned by moving from the outside to the inside on both ends of the hanger. apparatus. 前記位置合わせ手段がアーム部へ位置検出センサーを備え、前記アーム部の動作を制御することで位置合わせを行うことを特徴とする請求項１記載の鋳造物の取り出し装置。2. The casting takeout apparatus according to claim 1, wherein the positioning means includes a position detection sensor on the arm portion, and performs positioning by controlling the operation of the arm portion.
JP2008172733A 2008-07-01 2008-07-01 Casting device Expired - Fee Related JP5288910B2 (en)

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US8755113B2 (en) 2006-08-31 2014-06-17 Moxtek, Inc. Durable, inorganic, absorptive, ultra-violet, grid polarizer
US8873144B2 (en) 2011-05-17 2014-10-28 Moxtek, Inc. Wire grid polarizer with multiple functionality sections
US8913320B2 (en) 2011-05-17 2014-12-16 Moxtek, Inc. Wire grid polarizer with bordered sections
US8913321B2 (en) 2010-09-21 2014-12-16 Moxtek, Inc. Fine pitch grid polarizer
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JPS61117337U (en) * 1984-12-28 1986-07-24
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JP2736139B2 (en) * 1989-11-16 1998-04-02 アイシン高丘株式会社 Frameless casting line

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US8755113B2 (en) 2006-08-31 2014-06-17 Moxtek, Inc. Durable, inorganic, absorptive, ultra-violet, grid polarizer
US8611007B2 (en) 2010-09-21 2013-12-17 Moxtek, Inc. Fine pitch wire grid polarizer
US8913321B2 (en) 2010-09-21 2014-12-16 Moxtek, Inc. Fine pitch grid polarizer
US8873144B2 (en) 2011-05-17 2014-10-28 Moxtek, Inc. Wire grid polarizer with multiple functionality sections
US8913320B2 (en) 2011-05-17 2014-12-16 Moxtek, Inc. Wire grid polarizer with bordered sections
US8922890B2 (en) 2012-03-21 2014-12-30 Moxtek, Inc. Polarizer edge rib modification
US9348076B2 (en) 2013-10-24 2016-05-24 Moxtek, Inc. Polarizer with variable inter-wire distance
US9354374B2 (en) 2013-10-24 2016-05-31 Moxtek, Inc. Polarizer with wire pair over rib
US9632223B2 (en) 2013-10-24 2017-04-25 Moxtek, Inc. Wire grid polarizer with side region

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