JP4528205B2

JP4528205B2 - Transfer processing line

Info

Publication number: JP4528205B2
Application number: JP2005165040A
Authority: JP
Inventors: 健次栗木
Original assignee: Rinnai Corp
Current assignee: Rinnai Corp
Priority date: 2005-06-06
Filing date: 2005-06-06
Publication date: 2010-08-18
Anticipated expiration: 2025-06-06
Also published as: JP2006334656A

Description

本発明は、製品を構成する第１と第２の２つのワークの夫々に所定の加工を施した後、第１と第２の両ワークを組合せて製品を製造するトランスファ式加工ラインに関する。 The present invention relates to a transfer type processing line that manufactures a product by combining both the first and second workpieces after predetermined processing is performed on each of the first and second workpieces constituting the product.

従来、トランスファプレス等のトランスファ式加工ラインは、一種類のワークに段階的に複数の加工を施すように構成されている。具体的には、ワークに加工を施す複数のステージを等ピッチで直列に配置し、これらステージの配列方向に往復動されるトランスファバーを設けて、このトランスファバーにワークを把持するフィンガをステージの配置ピッチに合わせたピッチで複数取り付け、トランスファバーの往復動によりワークを上流側のステージから下流側のステージに１ステージ宛順送りするようにしている。 Conventionally, a transfer processing line such as a transfer press is configured to perform a plurality of processes step by step on one type of workpiece. Specifically, a plurality of stages that process a workpiece are arranged in series at an equal pitch, a transfer bar that is reciprocated in the arrangement direction of these stages is provided, and a finger that grips the workpiece is attached to the transfer bar. A plurality of attachments are attached at a pitch corresponding to the arrangement pitch, and the workpiece is forwarded to one stage from the upstream stage to the downstream stage by reciprocating movement of the transfer bar.

また、各ステージ間のピッチをワークの種類や加工の種類に応じて可変できるようにしたトランスファ式加工ラインも知られている(例えば、特許文献１参照)。このものでは、ステージの配列方向に長手のガイドレールを設けて、ガイドレールに各フィンガを移動自在に支持させ、各フィンガに、該各フィンガをガイドレールに沿って任意のストロークで移動可能なリニアモータ等の自走手段を設け、各ステージの配置ピッチの変更に合わせて各フィンガの移動ストロークを可変している。 There is also known a transfer processing line in which the pitch between each stage can be varied according to the type of workpiece and the type of processing (see, for example, Patent Document 1). In this device, a long guide rail is provided in the arrangement direction of the stage, each finger is supported by the guide rail so as to be movable, and each finger can be moved linearly along the guide rail with an arbitrary stroke. Self-propelled means such as a motor is provided, and the movement stroke of each finger is varied according to the change in the arrangement pitch of each stage.

ところで、トランスファ式加工ラインは、上記の如く一種類のワークに段階的に複数の加工を施すものであり、各フィンガの移動ストロークを可変する場合にも、ワークを１ステージ宛順送りしている。そのため、製品を構成する第１と第２の２つのワークの夫々に所定の加工を施した後、第１と第２の両ワークを組合せて製品を製造する場合には、トランスファ式加工ラインは採用していない。そして、このような製品を製造する場合、従来は、第１ワーク用の加工ステージと第２ワーク用の加工ステージとを並列に配置し、第１ワーク用の加工ステージの下流側に第１と第２の両ワークを組合せるステージを直列に配置している。 By the way, the transfer type machining line performs a plurality of machining steps on one kind of workpiece as described above, and even when the movement stroke of each finger is varied, the workpiece is forwarded to one stage. Therefore, when a product is manufactured by combining both the first and second workpieces after performing predetermined machining on each of the first and second workpieces constituting the product, the transfer type machining line is Not adopted. And when manufacturing such a product, conventionally, the machining stage for the first workpiece and the machining stage for the second workpiece are arranged in parallel, and the first and the second workpieces are arranged downstream of the machining stage for the first workpiece. A stage for combining the second workpieces is arranged in series.

このものでは、第２ワーク用の加工ステージから組合せステージの側方位置を経由して組合せステージに至るＬ形に屈曲した経路に沿って第２ワークを搬送することが必要になり、搬送機構が複雑になって、設備費が高くなる。また、第１と第２の各ワークに対する加工がプレス加工である場合、第１ワークの加工ステージと第２ワークの加工ステージとが直列に配置されていれば、プレス機は１台で済むが、第１ワークの加工ステージと第２ワークの加工ステージとが並列に配置されると、２台のプレス機が必要になり、設備費が一層高くなる。
特開２００２−１５３９９７号公報(０１０４〜０１２１、図５) In this case, it is necessary to convey the second workpiece along a path bent in an L shape from the processing stage for the second workpiece via the side position of the combination stage to the combination stage. Complexity increases equipment costs. Further, when the processing for each of the first and second workpieces is press processing, if the processing stage of the first workpiece and the processing stage of the second workpiece are arranged in series, only one press machine is sufficient. If the machining stage of the first workpiece and the machining stage of the second workpiece are arranged in parallel, two press machines are required, and the equipment cost is further increased.
JP 2002-153997 A (0104-0121, FIG. 5)

本発明は、以上の点に鑑み、製品を構成する第１と第２の２つのワークの夫々に所定の加工を施す各ステージと、第１と第２の両ワークを組合せるステージとを直列に配置し、搬送機構を簡素化して設備費の削減を図ることができるようにしたトランスファ式加工ラインを提供することをその課題としている。 In the present invention, in view of the above points, each stage that performs predetermined processing on each of the first and second workpieces constituting the product and a stage that combines both the first and second workpieces are connected in series. It is an object of the present invention to provide a transfer type processing line that is arranged in the above-described configuration and can simplify the transport mechanism and reduce the equipment cost.

上記課題を解決するために、本発明は、製品を構成する第１と第２の２つのワークの夫々に所定の加工を施した後、第１と第２の両ワークを組合せて製品を製造するトランスファ式加工ラインであって、第１ワークと第２ワークとを交互に投入する第１ステージと、第１ワークに所定の加工を施す第２ステージと、第２ワークに所定の加工を施す第３ステージと、第１と第２の両ワークを組合せる第４ステージとが直列に配置され、これらステージの配列方向に長手のガイド部材が設けられると共に、このガイド部材に移動自在に支持される第１フィンガと第２フィンガと第３フィンガとが設けられ、これら各フィンガは、該各フィンガをガイド部材の長手方向に任意のストロークで移動可能な自走手段を備え、第１フィンガにより、第１ステージに投入された第１ワークの第２ステージへの搬送と、第１ステージに投入された第２ワークの第２ステージを跳び越しての第３ステージへの搬送とが行われ、第２フィンガにより、第２ステージでの加工が施された第１ワークの第３ステージを跳び越しての第４ステージへの搬送が行われ、第２フィンガまたは第３フィンガにより、第３ステージでの加工が施された第２ワークの第４ステージへの搬送行われ、第３フィンガにより、第４ステージで組合された第１と第２の両ワークの第４ステージの下流側への搬送が行われるように各フィンガの自走手段が制御されることを特徴とする。 In order to solve the above-mentioned problems, the present invention manufactures a product by combining the first and second workpieces after performing predetermined processing on each of the first and second workpieces constituting the product. A transfer-type machining line, in which a first stage in which a first workpiece and a second workpiece are alternately placed, a second stage that performs a predetermined machining on the first workpiece, and a predetermined machining on the second workpiece A third stage and a fourth stage combining both the first and second workpieces are arranged in series, and a long guide member is provided in the arrangement direction of these stages, and is supported by the guide member so as to be movable. The first finger, the second finger, and the third finger are provided, and each of the fingers includes self-propelled means that can move the fingers in an arbitrary stroke in the longitudinal direction of the guide member. 1st The first work put into the second stage is transferred to the second stage, and the second work put into the first stage is transferred to the third stage by jumping over the second stage. The fingers are transferred to the fourth stage by jumping over the third stage of the first workpiece processed at the second stage, and processing at the third stage is performed by the second finger or the third finger. Is transferred to the fourth stage, and the third finger transfers the first and second workpieces combined in the fourth stage to the downstream side of the fourth stage. Thus, the self-running means of each finger is controlled.

本発明によれば、第１ワーク用の加工ステージたる第２ステージと、第２ワーク用の加工ステージたる第３ステージと、第１と第２の両ワークを組合せる第４ステージとを直列に配置しても、第１と第２の各ワークは該各ワークに対し不要なステージ(第１ワークに対しては第３ステージ、第２ワークに対しては第２ステージ)を飛び越して搬送されるため、支障なく製品を製造できる。そして、第１乃至第３の各フィンガは、全てガイドレールに沿って直線的に移動するものであれば足り、従来のようにＬ形に屈曲する経路に沿ってワークを搬送するもの比し搬送機構が簡素化され、設備費の削減を図ることができる。また、第１と第２の各ワークに対する加工がプレス加工である場合、第１ワーク用の加工ステージたる第２ステージと、第２ワーク用の加工ステージたる第３ステージとが直列に配置されることで、プレス機が１台で済み、設備費の一層の削減を図ることができる。 According to the present invention, a second stage that is a machining stage for a first workpiece, a third stage that is a machining stage for a second workpiece, and a fourth stage that combines both the first and second workpieces are connected in series. Even if it is arranged, each of the first and second workpieces is transported by skipping an unnecessary stage (the third stage for the first workpiece and the second stage for the second workpiece) for each workpiece. Therefore, the product can be manufactured without hindrance. All of the first to third fingers need only move linearly along the guide rail. Compared to the conventional method of conveying a workpiece along a path bent in an L shape, The mechanism is simplified and the equipment cost can be reduced. Further, in the case where the processing for each of the first and second workpieces is press processing, a second stage that is a processing stage for the first workpiece and a third stage that is a processing stage for the second workpiece are arranged in series. As a result, only one press is required, and the equipment cost can be further reduced.

尚、第１ステージに交互に投入される第１ワークと第２ワークとを第１フィンガにより夫々第２ステージと第３ステージとに順に搬送した後に、第２ステージにおける第１ワークの加工と第３ステージにおける第２ワークの加工とを同時に行い、加工後、第２フィンガによる第２ステージから第４ステージへの第１ワークの搬送と、第２フィンガまたは第３フィンガによる第３ステージから第４ステージへの第２ワークの搬送とを順に行うことも可能である。然し、これでは、ワーク搬送に時間がかかり、能率が悪くなる。これに対し、第２ステージでの第１ワークの加工後に、第３フィンガによる第４ステージの下流側への両ワークの搬送と、第２フィンガによる第２ステージから第４ステージへの第１ワークの搬送と、第１フィンガによる第１ステージから第３ステージへの第２ワークの搬送とが同時に行われ、第３ステージでの第２ワークの加工後に、第２フィンガまたは第３フィンガによる第３ステージから第４ステージへの第２ワークの搬送と、第１フィンガによる第１ステージから第２ステージへの第１ワークの搬送とが同時に行われるようにすれば、ワーク搬送時間が短くなり、能率アップを図ることができる。 In addition, after the 1st workpiece | work and 2nd workpiece | work put into the 1st stage alternately are conveyed to the 2nd stage and the 3rd stage in order by the 1st finger, processing of the 1st workpiece in the 2nd stage and the 1st The second workpiece in the three stages is simultaneously processed, and after the processing, the first workpiece is transferred from the second stage to the fourth stage by the second finger, and the third stage to the fourth by the second finger or the third finger. It is also possible to sequentially carry the second workpiece to the stage. However, in this case, it takes time to transport the workpiece, and the efficiency is deteriorated. On the other hand, after processing the first workpiece on the second stage, both workpieces are transferred to the downstream side of the fourth stage by the third finger, and the first workpiece from the second stage to the fourth stage by the second finger. And the transfer of the second workpiece from the first stage to the third stage by the first finger are performed at the same time, and after the processing of the second workpiece on the third stage, the third finger by the second finger or the third finger is used. If the conveyance of the second workpiece from the stage to the fourth stage and the conveyance of the first workpiece from the first stage to the second stage by the first finger are performed at the same time, the workpiece conveyance time is shortened and the efficiency is improved. You can plan up.

ところで、各フィンガに自走手段に加えて該各フィンガを昇降させる昇降手段を設け、各フィンガが各ステージの直上部に到達したときに、各フィンガを下降させて、各フィンガと各ステージとの間でのワークの受け渡しを行うようにすることも可能である。然し、このように各フィンガに個々に昇降手段を設けたのでは、設備費の削減を図る上で不利になる。これに対し、ガイド部材が、各フィンガと各ステージとの間で各ワークを受け渡し可能な下降位置と、各フィンガで把持された各ワークを各ステージから持ち上げ可能な上昇位置との間で上下動されるようにすれば、各フィンガに個々に昇降手段を設ける必要がなく、設備費の削減を図る上で有利である。 By the way, in addition to the self-propelling means, each finger is provided with lifting means for raising and lowering each finger, and when each finger reaches the top right of each stage, each finger is lowered, It is also possible to transfer workpieces between them. However, providing each finger individually with lifting means in this way is disadvantageous in reducing the equipment cost. On the other hand, the guide member moves up and down between a lowered position where each workpiece can be transferred between each finger and each stage, and a raised position where each workpiece held by each finger can be lifted from each stage. By doing so, it is not necessary to provide lifting means for each finger individually, which is advantageous in reducing the equipment cost.

尚、第４ステージで組合された両ワークに所定の加工を施す場合は、この加工を行う第５ステージを第４ステージの下流側に直列に配置し、第３フィンガにより、第４ステージから第５ステージへの両ワークの搬送が行われるようにすれば良い。 When performing predetermined processing on both workpieces combined in the fourth stage, the fifth stage for performing this processing is arranged in series on the downstream side of the fourth stage, and the third finger moves from the fourth stage to the second stage. What is necessary is just to make it convey both workpieces to 5 stages.

以下、図６に示す板金製バーナ本体から成る製品Ｗを製造するトランスファ式加工ラインに本発明を適用した実施形態について説明する。この製品Ｗは、図６(ｂ)に示すように、混合管上半部Ｗ１１とバーナヘッド外筒部Ｗ１２とから成る第１ワークＷ１と、混合管下半部Ｗ２１とバーナヘッド内筒部Ｗ２２とから成る第２ワークＷ２とで構成される。そして、図６(ａ)に示す如く、第１ワークＷ１と第２ワークＷ２とをバーナヘッド外筒部Ｗ１２にバーナヘッド内筒部Ｗ２２が挿入されるように組合せて、製品Ｗが製造される。ここで、第１ワークＷ１には、混合管上半部Ｗ１１に嵌合するバーナヘッド外筒部Ｗ１２の端縁Ｗ１２ａをかしめてバーナヘッド外筒部Ｗ１２を混合管上半部Ｗ１１に結合するプレス加工が施され、第２ワークＷ２には、混合管下半部Ｗ２１に嵌合するバーナヘッド内筒部Ｗ２２の端縁Ｗ２２ａをかしめてバーナヘッド内筒部Ｗ２２を混合管下半部Ｗ２１に結合するプレス加工が施される。また、第１ワークＷ１と第２ワークＷ２とを組合せた後、混合管上半部Ｗ１１の周縁Ｗ１１ａをヘミングして第１ワークＷ１と第２ワークＷ２とを結合するプレス加工を行う。 Hereinafter, an embodiment in which the present invention is applied to a transfer processing line for producing a product W composed of a sheet metal burner body shown in FIG. 6 will be described. As shown in FIG. 6B, the product W includes a first work W1 including a mixing pipe upper half W11 and a burner head outer cylinder W12, a mixing pipe lower half W21, and a burner head inner cylinder W22. And a second workpiece W2 composed of Then, as shown in FIG. 6A, the product W is manufactured by combining the first work W1 and the second work W2 so that the burner head inner cylinder part W22 is inserted into the burner head outer cylinder part W12. . Here, in the first work W1, the edge W12a of the burner head outer cylinder W12 fitted to the upper half W11 of the mixing tube is caulked to couple the burner head outer cylinder W12 to the upper half W11 of the mixing tube. The second workpiece W2 is processed, and the end edge W22a of the burner head inner cylinder W22 that fits into the lower half W21 of the mixing pipe is caulked to couple the inner cylinder W22 of the burner head to the lower half W21 of the mixing pipe Pressing is performed. Moreover, after combining the 1st workpiece | work W1 and the 2nd workpiece | work W2, the press work which couple | bonds the 1st workpiece | work W1 and the 2nd workpiece | work W2 by hemming the peripheral edge W11a of the mixing pipe upper half W11.

図１及び図２を参照して、実施形態のトランスファ式加工ラインは、横長の１台のプレス機１を主体として構成されている。そして、プレス機１の横方向一端部から他端部に向けて順に、第１ワークＷ１と第２ワークＷ２とを交互に投入する第１ステージＳ１と、第１ワークＷ１に加工を施す第２ステージＳ２と、第２ワークＷ２に加工を施す第３ステージＳ３と、第１ワークＷ１と第２ワークＷ２とを組合せる第４ステージＳ４と、組合せた両ワークＷ１，Ｗ２に加工を施す第５ステージＳ５とが直列に配置されている。尚、第１ステージＳ１には、混合管上半部Ｗ１１とバーナヘッド外筒部Ｗ１２とを仮組みした第１ワークＷ１が図示省略した搬送治具によりバーナヘッド外筒部Ｗ１２を下に向けた姿勢で投入され、同様に、混合管下半部Ｗ２１とバーナヘッド内筒部Ｗ２２とを仮組みした第２ワークＷ２が図示省略した搬送治具によりバーナヘッド内筒部Ｗ２２を下に向けた姿勢で投入され、その後各ワークＷ１，Ｗ２は投入時と同一姿勢のまま加工ラインに搬送される。 With reference to FIG.1 and FIG.2, the transfer type | mold processing line of embodiment is comprised mainly by the one horizontally long press machine 1. As shown in FIG. And the 1st stage S1 which throws in alternately the 1st work W1 and the 2nd work W2 in order toward the other end from the horizontal direction one end of press machine 1, and the 2nd which processes the 1st work W1 A stage S2, a third stage S3 that processes the second workpiece W2, a fourth stage S4 that combines the first workpiece W1 and the second workpiece W2, and a fifth that processes both the combined workpieces W1 and W2. Stage S5 is arranged in series. The first stage S1 has a first work W1 temporarily assembled with the mixing tube upper half W11 and the burner head outer cylinder W12, and the burner head outer cylinder W12 is directed downward by a conveying jig (not shown). Similarly, the second work W2 in which the lower half W21 of the mixing tube and the burner head inner cylinder part W22 are temporarily assembled is put in a posture in which the burner head inner cylinder part W22 faces downward by a conveying jig (not shown). Then, the workpieces W1 and W2 are conveyed to the machining line in the same posture as at the time of loading.

プレス機１は、ボルスタ２と、ボルスタ２の上方に一対の支柱３，３を介して昇降自在に支持されるラム４とを備えている。ボルスタ２の上面には、第２ステージＳ２、第３ステージＳ３、第４ステージＳ４及び第５ステージＳ５に位置させて夫々ワーク載せ台５が設置され、また、ラム４の下面には、第２ステージＳ２、第３ステージＳ３及び第５ステージＳ５に位置させて夫々プレス加工用の加圧ヘッド６が吊持されている。第２ステージＳ２のワーク載せ台５には第１ワークＷ１が載置され、ラム４の下降時に第２ステージＳ２の加圧ヘッド６によりバーナヘッド外筒部Ｗ１２の端縁Ｗ１２ａをかしめるプレス加工が行われる。第３ステージＳ３のワーク載せ台５には第２ワークＷ２が載置され、ラム４の下降時に第３ステージＳ３の加圧ヘッド６によりバーナヘッド内筒部Ｗ２２の端縁Ｗ２２ａをかしめるプレス加工が行われる。第４ステージＳ４のワーク載せ台５には、先ず、第１ワークＷ１が載置され、次に、第２ワークＷ２がバーナヘッド内筒部Ｗ２２をバーナヘッド外筒部Ｗ１２に挿入した状態で第１ワークＷ１の上に載置され、第１ワークＷ１と第２ワークＷ２とが組合せられる。第５ステージＳ５のワーク載せ台５には、組合せられた第１と第２の両ワークＷ１，Ｗ２が第１ワークＷ１を下にして載置され、ラム４の下降時に第５ステージＳ５の加圧ヘッド６により混合管上半部Ｗ１１の周縁Ｗ１１ａをヘミングするプレス加工が行われる。 The press machine 1 includes a bolster 2 and a ram 4 supported above and below the bolster 2 through a pair of support columns 3 and 3 so as to be movable up and down. On the upper surface of the bolster 2, the work platform 5 is placed on the second stage S 2, the third stage S 3, the fourth stage S 4 and the fifth stage S 5, respectively. Pressurizing heads 6 for pressing are respectively suspended from the stage S2, the third stage S3, and the fifth stage S5. Press work in which the first work W1 is placed on the work stage 5 of the second stage S2, and the edge W12a of the burner head outer cylinder W12 is caulked by the pressure head 6 of the second stage S2 when the ram 4 is lowered. Is done. The second work W2 is placed on the work platform 5 of the third stage S3, and press working is performed by caulking the edge W22a of the inner cylinder portion W22 of the burner head with the pressure head 6 of the third stage S3 when the ram 4 is lowered. Is done. First, the first work W1 is placed on the work stage 5 of the fourth stage S4, and then the second work W2 is inserted in the state where the burner head inner cylinder part W22 is inserted into the burner head outer cylinder part W12. The first work W1 and the second work W2 are combined on the first work W1. The combined first and second workpieces W1 and W2 are placed on the workpiece stage 5 of the fifth stage S5 with the first workpiece W1 facing downward, and when the ram 4 is lowered, the fifth stage S5 is added. Pressing for hemming the peripheral edge W11a of the upper half W11 of the mixing tube is performed by the pressure head 6.

また、プレス機１のボルスタ２とラム４との間の部分には、各ワーク載せ台５及び各加圧ヘッド６よりも奥側に位置させて、上記ステージＳ１〜Ｓ５の配列方向たる横方向に長手のガイド部材７が設けられている。ガイド部材７には、第１乃至第４の４個のフィンガ８−１，８−２，８−３，８−４がガイド部材７の長手方向、即ち、プレス機１の横方向に移動自在に支持されている。 Further, a portion between the bolster 2 and the ram 4 of the press machine 1 is positioned on the back side with respect to each work platform 5 and each pressure head 6, and the lateral direction as the arrangement direction of the stages S <b> 1 to S <b> 5. A longitudinal guide member 7 is provided at the end. In the guide member 7, first to fourth fingers 8-1, 8-2, 8-3, 8-4 are movable in the longitudinal direction of the guide member 7, that is, in the lateral direction of the press machine 1. It is supported by.

各フィンガ８−１，８−２，８−３，８−４は、図３及び図４に示す如く、ガイド部材７に設けた横方向に長手のレール７１にスライダ８１ａを介して摺動自在に係合するフレーム８１を備えており、このフレーム８１に、各ワークＷ１，Ｗ２を把持する一対の把持片８２，８２が開閉アクチュエータ８３を介して開閉自在に取付けられている。また、ガイド部材７の下縁には、ガイド部材７の全長に亘ってラック７２が設けられており、各フィンガ８−１，８−２，８−３，８−４のフレーム８１に、ラック７２に噛合する出力軸上のピニオン８４を有する自走手段としてのサーボモータ８５を搭載している。かくして、各フィンガ８−１，８−２，８−３，８−４は、夫々のサーボモータ８５の作動によりガイド部材７の長手方向たる横方向に任意のストロークで移動可能になる。そして、各サーボモータ８５を図外のコントローラにより制御し、後述するように各フィンガ８−１，８−２，８−３，８−４によるワーク搬送を行う。 As shown in FIGS. 3 and 4, the fingers 8-1, 8-2, 8-3, and 8-4 are slidable through a slider 81a on a rail 71 that is provided in the guide member 7 in the lateral direction. A pair of gripping pieces 82 and 82 for gripping the workpieces W1 and W2 are attached to the frame 81 through an opening / closing actuator 83. A rack 72 is provided at the lower edge of the guide member 7 over the entire length of the guide member 7, and the rack 81 is attached to the frame 81 of each finger 8-1, 8-2, 8-3, 8-4. A servo motor 85 as a self-propelled means having a pinion 84 on the output shaft meshing with 72 is mounted. Thus, each of the fingers 8-1, 8-2, 8-3, and 8-4 can be moved with an arbitrary stroke in the lateral direction that is the longitudinal direction of the guide member 7 by the operation of each servo motor 85. Then, each servo motor 85 is controlled by a controller (not shown), and workpieces are conveyed by the fingers 8-1, 8-2, 8-3, 8-4 as will be described later.

ガイド部材７は、ボルスタ２の奥側に立設した左右一対のガイドポスト９，９に固定のガイドレール９ａ，９ａに上下動自在に支持されている。そして、ガイド部材７を、図示省略したモータ或いはシリンダ等の駆動源により、各フィンガ８−１，８−２，８−３，８−４と各ステージＳ１，Ｓ２，Ｓ３，Ｓ４，Ｓ５との間で各ワークＷ１，Ｗ２を受け渡し可能な下降位置と、各フィンガ８−１，８−２，８−３，８−４で把持された各ワークＷ１，Ｗ２を各ステージＳ１，Ｓ２，Ｓ３，Ｓ４，Ｓ５から持ち上げ可能な上昇位置との間で上下動させるようにしている。 The guide member 7 is supported by guide rails 9a and 9a fixed to a pair of left and right guide posts 9 and 9 erected on the back side of the bolster 2 so as to be movable up and down. Then, the guide member 7 is moved between the fingers 8-1, 8-2, 8-3, 8-4 and the stages S1, S2, S3, S4, S5 by a driving source such as a motor or a cylinder (not shown). The lowered position where each of the workpieces W1, W2 can be transferred between them, and each of the workpieces W1, W2 gripped by the fingers 8-1, 8-2, 8-3, 8-4 are represented by the stages S1, S2, S3. It is made to move up and down between raised positions that can be lifted from S4 and S5.

次に、上記の如く構成されたトランスファ式加工ラインによる製品Ｗの製造手順について図５を参照して説明する。図５(ａ)は、第１ステージＳ１に投入された第１ワークＷ１が第１フィンガ８−１により第２ステージＳ２に搬送され、第３ステージＳ３での加工済みの第２ワークＷ２が第３フィンガ８−３により第４ステージＳ４に搬送され、第５ステージＳ５での加工済みの製品Ｗが第４フィンガ８−４により第５ステージＳ５の下流側に搬送された状態を示している。この状態からガイド部材７を下降位置に下動させて、第１フィンガ８−１に把持される第１ワークＷ１を第２ステージＳ２のワーク置き台５に載置し、また、第４ステージＳ４のワーク置き台５に先に載置されている第１ワークＷ１の上に第３フィンガ８−３に把持される第２ワークＷ２を載置して、第１と第２の両ワークＷ１，Ｗ２を組合せ、更に、第４フィンガ８−４に把持される製品Ｗを次工程に払い出す。 Next, the manufacturing procedure of the product W by the transfer type processing line configured as described above will be described with reference to FIG. FIG. 5A shows that the first work W1 put into the first stage S1 is transported to the second stage S2 by the first finger 8-1, and the second work W2 processed in the third stage S3 is the first work W2. A state is shown in which the product W conveyed by the third finger 8-3 is transferred to the fourth stage S4, and the product W processed in the fifth stage S5 is transferred downstream of the fifth stage S5 by the fourth finger 8-4. From this state, the guide member 7 is moved down to the lowered position, and the first work W1 held by the first finger 8-1 is placed on the work placing table 5 of the second stage S2, and the fourth stage S4. The second work W2 gripped by the third finger 8-3 is placed on the first work W1 previously placed on the work placing table 5, and both the first and second works W1, W2 is combined, and the product W gripped by the fourth finger 8-4 is discharged to the next process.

次に、ガイド部材７を上昇位置に上動させ、各フィンガ８−１〜８−４を図１に示す夫々の待機位置に移動させる。尚、第１フィンガ８−１の待機位置は第１ステージＳ１であり、第２フィンガ８−２の待機位置は第２ステージＳ２と第３ステージＳ３との間であり、第３フィンガ８−３の待機位置は第４ステージＳ４であり、第４フィンガ８−４の待機位置は第５ステージＳ５の下流側である。その後、ラム４を下降させて、第２ステージＳ２の加圧ヘッド６により第１ワークＷ１に対するプレス加工、即ち、バーナヘッド外筒部Ｗ１２の端縁Ｗ１２ａをかしめて混合管上半部Ｗ１１とバーナヘッド外筒部Ｗ１２とを結合する加工を行う。 Next, the guide member 7 is moved up to the raised position, and the fingers 8-1 to 8-4 are moved to the respective standby positions shown in FIG. The standby position of the first finger 8-1 is the first stage S1, the standby position of the second finger 8-2 is between the second stage S2 and the third stage S3, and the third finger 8-3. Is the fourth stage S4, and the fourth finger 8-4 is on the downstream side of the fifth stage S5. After that, the ram 4 is lowered, and the pressurization head 6 of the second stage S2 presses the first workpiece W1, that is, the edge W12a of the burner head outer cylinder W12 is caulked to mix the upper half W11 and the burner. Processing to couple the head outer cylinder portion W12 is performed.

この加工に併行して、第１ステージＳ１に第２ワークＷ２を投入し、ラム４の上昇後、第２フィンガ８−２を第２ステージＳ２に移動させ(他のフィンガ８−１，８−３，８−４は夫々の待機位置から移動しない)、この状態でガイド部材７を下降位置に下動させ、第１ステージＳ１に投入された第２ワークＷ２を第１フィンガ８−１で把持すると共に、第２ステージＳ２のワーク載せ台５上の加工済みの第１ワークＷ１を第２フィンガ８−２で把持し、更に、第４ステージＳ４のワーク載せ台５上の組合せ済みの両ワークＷ１，Ｗ２を第３フィンガ８−３で把持する。そして、ガイド部材７を上昇位置に上動させた後、第３フィンガ８−３を第５ステージＳ５に移動させると共に、第２フィンガ８−２を第３ステージＳ３を跳び越して第４ステージＳ４に移動させ、更に、第１フィンガ８−１を第２ステージＳ２を跳び越して第３ステージＳ３に移動させる。これにより、図５(ｂ)に示す如く、組合せ済みの両ワークＷ１，Ｗ２の第５ステージＳ５への搬送と、加工済みの第１ワークＷ１の第４ステージＳ４への搬送と、第２ワークＷ２の第３ステージＳ３への搬送とが行われる。次に、ガイド部材７を下降位置に下動させて、第１フィンガ８−１に把持される第２ワークＷ２を第３ステージＳ３のワーク置き台５に載置すると共に、第２フィンガ８−２に把持される第１ワークＷ１を第４ステージＳ４のワーク置き台５に載置し、更に、第３フィンガ８−３に把持される両ワークＷ１，Ｗ２を第５ステージＳ５のワーク置き台５に載置する。 In parallel with this machining, the second workpiece W2 is loaded into the first stage S1, and after the ram 4 is raised, the second finger 8-2 is moved to the second stage S2 (the other fingers 8-1 and 8- 3 and 8-4 do not move from the respective standby positions). In this state, the guide member 7 is moved down to the lowered position, and the second workpiece W2 input to the first stage S1 is gripped by the first finger 8-1. At the same time, the processed first work W1 on the work platform 5 of the second stage S2 is gripped by the second finger 8-2, and further, both combined workpieces on the work platform 5 of the fourth stage S4 are combined. W1 and W2 are held by the third finger 8-3. Then, after the guide member 7 is moved up to the raised position, the third finger 8-3 is moved to the fifth stage S5, and the second finger 8-2 is jumped over the third stage S3 and the fourth stage S4. Further, the first finger 8-1 is moved over the second stage S2 and moved to the third stage S3. As a result, as shown in FIG. 5B, both the combined workpieces W1 and W2 are conveyed to the fifth stage S5, the processed first workpiece W1 is conveyed to the fourth stage S4, and the second workpiece. Transfer of W2 to the third stage S3 is performed. Next, the guide member 7 is moved down to the lowered position so that the second work W2 gripped by the first finger 8-1 is placed on the work placing table 5 of the third stage S3, and the second finger 8- The first work W1 gripped by 2 is placed on the work stage 5 of the fourth stage S4, and further, both the workpieces W1, W2 gripped by the third finger 8-3 are placed on the work stage of the fifth stage S5. 5 is placed.

次に、ガイド部材７を上昇位置に上動させると共に、各フィンガ８−１〜８−４を上述した夫々の待機位置に移動させた後、ラム４を下降させる。これによれば、第３ステージＳ３の加圧ヘッド６による第２ワークＷ２のプレス加工、即ち、バーナヘッド内筒部Ｗ２２の端縁Ｗ２２ａをかしめて混合管下半部Ｗ２１とバーナヘッド内筒部Ｗ２２とを結合する加工と、第５ステージＳ５の加圧ヘッド６による両ワークＷ１，Ｗ２のプレス加工、即ち、混合管上半部Ｗ１１の周縁Ｗ１１ａをヘミングして両ワークＷ１，Ｗ２を結合する加工とが行われる。 Next, the guide member 7 is moved upward to the raised position, and the fingers 8-1 to 8-4 are moved to the respective standby positions described above, and then the ram 4 is lowered. According to this, the press work of the second workpiece W2 by the pressure head 6 of the third stage S3, that is, the end edge W22a of the burner head inner cylinder part W22 is caulked, and the mixing pipe lower half W21 and the burner head inner cylinder part W22 and the work W1 and W2 are pressed by the pressure head 6 of the fifth stage S5, that is, the work W1 and W2 are joined by hemming the peripheral edge W11a of the upper half W11 of the mixing tube. Processing is performed.

この加工に併行して第１ステージＳ１に第１ワークＷ１を投入し、ラム４の上昇後、第３フィンガ８−３を第３ステージＳ３に移動させると共に、第４フィンガ８−４を第５ステージＳ５に移動させ(他のフィンガ８−１，８−２は待機位置から移動しない)、この状態でガイド部材７を下降位置に下動させ、第１ステージＳ１に投入された第１ワークＷ１を第１フィンガ８−１で把持すると共に、第３ステージＳ３のワーク載せ台５上の加工済みの第２ワークＷ２を第３フィンガ８−３で把持し、更に、第５ステージＳ５のワーク載せ台５上の加工済みの両ワークＷ１，Ｗ２，即ち、製品Ｗを第４フィンガ８−４で把持する。そして、ガイド部材７を上昇位置に上動させた後、第４フィンガ８−４を第５ステージＳ５の下流側に移動させると共に、第２フィンガ８−３を第４ステージＳ４に移動させ、更に、第１フィンガ８−１を第２ステージＳ２に移動させる。これにより図５(ａ)に示す状態に戻る。かくして、以上の作動を繰り返すことにより製品Ｗが次々に製造される。 In parallel with this processing, the first work W1 is put into the first stage S1, and after the ram 4 is raised, the third finger 8-3 is moved to the third stage S3, and the fourth finger 8-4 is moved to the fifth stage S3. The stage is moved to the stage S5 (the other fingers 8-1 and 8-2 are not moved from the standby position), and in this state, the guide member 7 is moved down to the lowered position, and the first work W1 put into the first stage S1 is moved. Is gripped by the first finger 8-1 and the processed second workpiece W2 on the workpiece stage 5 of the third stage S3 is gripped by the third finger 8-3, and further, the workpiece is placed on the fifth stage S5. Both processed workpieces W1, W2 on the table 5, that is, the product W are gripped by the fourth finger 8-4. Then, after the guide member 7 is moved up to the raised position, the fourth finger 8-4 is moved to the downstream side of the fifth stage S5, the second finger 8-3 is moved to the fourth stage S4, and further The first finger 8-1 is moved to the second stage S2. This returns to the state shown in FIG. Thus, the products W are manufactured one after another by repeating the above operation.

以上の説明から明らかなように、本実施形態では、第１ワークＷ１にプレス加工を施す第２ステージＳ２と、第２ワークＷ２にプレス加工を施す第３ステージＳ３と、第１と第２の両ワークＷ１，Ｗ２を組合せる第４ステージＳ４と、両ワークＷ１，Ｗ２にプレス加工を施す第５ステージＳ５とを直列に配置しているが、第１と第２の各ワークＷ１，Ｗ２は該各ワークに対し不要なステージ(第１ワークＷ１に対しては第３ステージＳ３、第２ワークＷ２に対しては第２ステージＳ２)を飛び越して搬送されるため、支障なく製品Ｗを製造できる。 As is clear from the above description, in the present embodiment, the second stage S2 that presses the first work W1, the third stage S3 that presses the second work W2, and the first and second stages. A fourth stage S4 that combines both the works W1 and W2 and a fifth stage S5 that presses both the works W1 and W2 are arranged in series, but the first and second works W1 and W2 are Since the workpieces are transferred over the unnecessary stages (the third stage S3 for the first workpiece W1 and the second stage S2 for the second workpiece W2), the product W can be manufactured without any trouble. .

ところで、従来は、第１ワークＷ１にプレス加工を施す第１ワーク用加工ステージ(本実施形態の第２ステージＳ２に相当するステージ)と第１と第２の両ワークＷ１，Ｗ２を組合せる組合せステージ(本実施形態の第４ステージＳ４に相当するステージ)と両ワークＷ１，Ｗ２にプレス加工を施す製品用加工ステージ(本実施形態の第５ステージＳ５に相当するステージ)とを直列に配置し、第２ワークＷ２にプレス加工を施す第２ワーク用加工ステージ(本実施形態の第３ステージＳ３に相当するステージ)を第１ワーク用加工ステージに並列に配置し、第２ワーク用加工ステージから組合せステージに第２ワークＷ２を搬送している。この場合、組合せステージに第２ワークＷ２を搬送する機構を、第２ワーク用加工ステージから組合せステージの側方位置を経由して組合せステージに至るＬ形に屈曲した経路に沿って第２ワークＷ２を搬送する機能を有するものに構成せざるを得ず、搬送機構が複雑になる。また、直列に配置される第１ワーク用加工ステージと製品用加工ステージとでのプレス加工を１台のプレス機で行うことができても、第１ワーク用加工ステージに並列の第２ワーク用加工ステージでのプレス加工は別のプレス機で行わざるを得なくなる。尚、奥行寸法の大きな大型のプレス機を用いれば、第１ワークＷ１用加工ステージと第２ワーク用加工ステージとをプレス機の奥行き方向に並設できるが、これでは第２ワーク用加工ステージでのプレス加工を別の小型プレス機で行う場合より設備費が高くなると共に、設置スペースも広く必要とし、実用的ではない。 By the way, conventionally, the combination which combines the 1st work processing stage (stage corresponding to 2nd stage S2 of this embodiment) and the 1st and 2nd work W1 and W2 which press-work the 1st work W1. A stage (a stage corresponding to the fourth stage S4 of the present embodiment) and a product processing stage (a stage corresponding to the fifth stage S5 of the present embodiment) that presses both the workpieces W1 and W2 are arranged in series. A second workpiece machining stage (a stage corresponding to the third stage S3 of the present embodiment) for pressing the second workpiece W2 is arranged in parallel with the first workpiece machining stage, and the second workpiece machining stage is The second workpiece W2 is conveyed to the combination stage. In this case, the mechanism that conveys the second workpiece W2 to the combination stage is moved along the L-shaped bent path from the second workpiece processing stage to the combination stage via the side position of the combination stage. It must be configured to have a function of transporting, and the transport mechanism becomes complicated. In addition, even if the press work at the first work processing stage and the product work stage arranged in series can be performed by one press, the second work parallel to the first work processing stage. Press processing at the processing stage must be performed by another press. If a large press with a large depth dimension is used, the processing stage for the first workpiece W1 and the processing stage for the second workpiece can be arranged side by side in the depth direction of the pressing machine. The cost of equipment is higher than when the press work is performed with another small press, and a large installation space is required, which is not practical.

これに対し、本実施形態では、全てのステージＳ１〜Ｓ５が直列に配置されるため、第２ステージＳ２での第１ワークＷ１に対するプレス加工と、第３ステージＳ３での第２ワークＷ２に対するプレス加工と、第５ステージＳ５での両ワークＷ１，Ｗ２に対するプレス加工とを奥行寸法が然程大きくない比較的小型の１台のプレス機１で行うことができる。また、第１乃至第４の各フィンガ８−１〜８−４は、全てガイド部材７に沿って直線的に移動するものであれば足り、従来のようにＬ形に屈曲する経路に沿ってワークを搬送するもの比し搬送機構が簡素化され、プレス機１が１台で済むことと相俟って、設備費の大幅な削減を図ることができる。 On the other hand, in this embodiment, since all the stages S1 to S5 are arranged in series, the press work for the first work W1 in the second stage S2 and the press for the second work W2 in the third stage S3. The processing and the press processing for the workpieces W1 and W2 in the fifth stage S5 can be performed by a relatively small one press machine 1 whose depth dimension is not so large. Further, it is sufficient that the first to fourth fingers 8-1 to 8-4 are all linearly moved along the guide member 7, and along the path bent in an L shape as in the prior art. Compared with what transports workpieces, the transport mechanism is simplified, and coupled with the fact that only one press machine 1 is required, the equipment cost can be greatly reduced.

以上、本発明の実施形態を図面を参照して説明したが、本発明はこれに限定されない。例えば、上記実施形態では、第３ステージＳ３から第４ステージＳ４への第２ワークＷ２の搬送を第３フィンガ８−３で行っているが、これを第２フィンガ８−２で行うことも可能である。このようにすれば、第２フィンガ８−２による第３ステージＳ３から第４ステージＳ４への第２ワークＷ２の搬送時に、第３フィンガ８−３により第５ステージＳ５の下流側に製品Ｗを搬送することが可能になり、第４フィンガ８−４を省略できる。 As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above-described embodiment, the second workpiece W2 is transferred from the third stage S3 to the fourth stage S4 by the third finger 8-3, but this can also be performed by the second finger 8-2. It is. In this way, when the second workpiece W2 is transferred from the third stage S3 to the fourth stage S4 by the second finger 8-2, the product W is delivered to the downstream side of the fifth stage S5 by the third finger 8-3. It becomes possible to convey, and the fourth finger 8-4 can be omitted.

また、上記実施形態では、第２ステージＳ２での第１ワークＷ１の加工後に、第３フィンガ８−３による第４ステージＳ４から第５ステージＳ５への両ワークＷ１，Ｗ２の搬送と、第２フィンガ８−２による第２ステージＳ２から第４ステージＳ４への第１ワークＷ１の搬送と、第１フィンガ８−１による第１ステージＳ１から第３ステージＳ３への第２ワークＷ２の搬送とが同時に行われ、第３ステージＳ３での第２ワークＷ２の加工後に、第３フィンガ８−３による第３ステージＳ３から第４ステージＳ４への第２ワークＷ２の搬送と、第１フィンガ８−１による第１ステージＳ１から第２ステージＳ２への第１ワークＷ１の搬送とが同時に行われるようにしているが、第１ステージＳ１に交互に投入される第１ワークＷ１と第２ワークＷ２とを第１フィンガ８−１により夫々第２ステージＳ２と第３ステージＳ３とに順に搬送した後に、第２ステージＳ２における第１ワークＷ１の加工と第３ステージＳ３における第２ワークＷ２の加工とを同時に行い、加工後、第２フィンガ８−２による第２ステージＳ２から第４ステージＳ４への第１ワークＷ１の搬送と、第２フィンガ８−２または第３フィンガ８−３による第３ステージＳ３から第４ステージＳ４への第２ワークＷ２の搬送とを順に行うことも可能である。然し、これでは、ワーク搬送に時間がかかり、能率が悪くなる。従って、能率アップを図るには、上記実施形態のようにすることが望ましい。 Moreover, in the said embodiment, after the process of the 1st workpiece | work W1 in 2nd stage S2, conveyance of both workpiece | work W1, W2 from 4th stage S4 to 5th stage S5 by the 3rd finger 8-3, and 2nd Transfer of the first work W1 from the second stage S2 to the fourth stage S4 by the finger 8-2 and transfer of the second work W2 from the first stage S1 to the third stage S3 by the first finger 8-1. At the same time, after processing the second workpiece W2 in the third stage S3, the second finger W-3 transports the second workpiece W2 from the third stage S3 to the fourth stage S4, and the first finger 8-1. The first workpiece W1 is transferred from the first stage S1 to the second stage S2 simultaneously, but the first workpiece W1 and the second workpiece are alternately put into the first stage S1. 2 are sequentially transferred to the second stage S2 and the third stage S3 by the first finger 8-1, respectively, and then the processing of the first workpiece W1 in the second stage S2 and the processing of the second workpiece W2 in the third stage S3. After the processing, the first workpiece W1 is transported from the second stage S2 to the fourth stage S4 by the second finger 8-2 and the third by the second finger 8-2 or the third finger 8-3. It is also possible to sequentially carry the second workpiece W2 from the stage S3 to the fourth stage S4. However, in this case, it takes time to transport the workpiece, and the efficiency is deteriorated. Therefore, in order to increase the efficiency, it is desirable that the above embodiment is used.

また、上記実施形態では、ガイド部材７を上下動させているが、ガイド部材７を上下動させる代わりに、各フィンガ８−１〜８−４に該各フィンガを昇降させる昇降手段を設け、各フィンガ８−１〜８−４が各ステージＳ１〜Ｓ５の直上部に到達したときに、各フィンガ８−１〜８−４を下降させて、各フィンガ８−１〜８−４と各ステージＳ１〜Ｓ５との間でのワークの受け渡しを行うようにすることも可能である。然し、設備費の削減を図るには、各フィンガ８−１〜８−４に個々に昇降手段を設けるよりも、ガイド部材７を上下動させる方が有利である。 Moreover, in the said embodiment, although the guide member 7 is moved up and down, instead of moving the guide member 7 up and down, each finger 8-1 to 8-4 is provided with raising and lowering means for raising and lowering each finger, When the fingers 8-1 to 8-4 reach directly above the stages S 1 to S 5, the fingers 8-1 to 8-4 are lowered, and the fingers 8-1 to 8-4 and each stage S 1 are moved down. It is also possible to deliver a workpiece to and from S5. However, in order to reduce the equipment cost, it is more advantageous to move the guide member 7 up and down, rather than providing each finger 8-1 to 8-4 with an elevating means.

また、上記実施形態では、第４ステージＳ４で第１と第２の両ワークＷ１，Ｗ２を組合せた後、第５ステージＳ５で両ワークＷ１，Ｗ２を結合する加工を行っているが、ラム４に第４ステージＳ４に位置する加圧ヘッドを取付け、第４ステージＳ４において両ワークＷ１，Ｗ２を結合する加工を行い、第５ステージＳ５を省略することも可能である。 In the above embodiment, the first and second workpieces W1 and W2 are combined in the fourth stage S4, and then the workpiece W1 and W2 are joined in the fifth stage S5. It is also possible to attach a pressure head located on the fourth stage S4, perform a process of joining the workpieces W1, W2 in the fourth stage S4, and omit the fifth stage S5.

また、上記実施形態は板金製バーナ本体から成る製品Ｗを製造する加工ラインに本発明を適用したものであるが、製品はこれに限られるものではなく、第１と第２の２つのワークの夫々に所定の加工を施した後、第１と第２の両ワークを組合せて製品を製造する加工ラインとして本発明は広く適用でき、各ワークに施す加工もプレス加工に限られない。 Moreover, although the said embodiment applies this invention to the processing line which manufactures the product W which consists of a sheet-metal burner main body, a product is not restricted to this, The 1st and 2nd two workpiece | work The present invention can be widely applied as a processing line for manufacturing a product by combining both the first and second workpieces after predetermined processing is performed, and the processing applied to each workpiece is not limited to press processing.

本発明加工ラインの実施形態を示す模式的な正面図。The typical front view showing the embodiment of the present invention processing line. 図１のＩＩ−ＩＩ線から見た実施形態の平面図。The top view of embodiment seen from the II-II line | wire of FIG. フィンガ部分の正面図。The front view of a finger part. 図３のＩＶ−ＩＶ線で切断した切断側面図。FIG. 4 is a cut side view taken along line IV-IV in FIG. 3. 実施形態の作動を説明する説明図。Explanatory drawing explaining the action | operation of embodiment. (ａ)実施形態の加工ラインで製造する製品の断面図、(ｂ)製品の分解状態の斜視図。(a) Sectional drawing of the product manufactured with the processing line of embodiment, (b) The perspective view of the decomposition | disassembly state of a product.

Explanation of symbols

Ｗ…製品、Ｗ１…第１ワーク、Ｗ２…第２ワーク、Ｓ１…第１ステージ、Ｓ２…第２ステージ、Ｓ３…第３ステージ、Ｓ４…第４ステージ、Ｓ５…第５ステージ、７…ガイド部材、８−１…第１フィンガ、８−２…第２フィンガ、８−３…第３フィンガ、８５…サーボモータ(自走手段)。 W ... product, W1 ... first work, W2 ... second work, S1 ... first stage, S2 ... second stage, S3 ... third stage, S4 ... fourth stage, S5 ... fifth stage, 7 ... guide member 8-1 ... 1st finger, 8-2 ... 2nd finger, 8-3 ... 3rd finger, 85 ... Servo motor (self-running means).

Claims

A transfer type processing line for manufacturing a product by combining both the first and second workpieces after performing predetermined processing on each of the first and second workpieces constituting the product,
A first stage in which a first work and a second work are alternately placed; a second stage for applying a predetermined process to the first work; a third stage for applying a predetermined process to the second work; A fourth stage that combines the two workpieces is arranged in series,
A longitudinal guide member is provided in the arrangement direction of the stages, and a first finger, a second finger, and a third finger supported movably on the guide member are provided. Provided with self-propelled means that can move with any stroke in the longitudinal direction of the guide member,
With the first finger, the first work put into the first stage is transported to the second stage, and the second work thrown into the first stage jumps over the second stage to the third stage. Is transferred by the second finger to the fourth stage by jumping over the third stage of the first workpiece processed by the second stage, and by the second finger or the third finger, The second workpiece processed in the third stage is transported to the fourth stage, and is downstream of the fourth stage of both the first and second workpieces combined in the fourth stage by the third finger. A transfer type processing line, wherein the self-propelled means of each finger is controlled so that conveyance to the side is performed.

After processing the first workpiece on the second stage, both the workpieces are transferred to the downstream side of the fourth stage by the third finger, and the first workpiece is transferred from the second stage to the fourth stage by the second finger. The conveyance and the conveyance of the second workpiece from the first stage to the third stage by the first finger are performed at the same time, and after the second workpiece is processed on the third stage, the second finger or the third finger is used for the third workpiece. 2. The transfer type machining according to claim 1, wherein the transfer of the second work from the stage to the fourth stage and the transfer of the first work from the first stage to the second stage by the first finger are performed simultaneously. line.

The guide member moves up and down between a lowered position where each workpiece can be transferred between each finger and each stage, and a raised position where each workpiece held by each finger can be lifted from each stage. The transfer type processing line according to claim 1, wherein the transfer type processing line is used.

A fifth stage for performing predetermined processing on both workpieces combined in the fourth stage is arranged in series on the downstream side of the fourth stage, and both the fourth stage to the fifth stage are arranged by the third finger. The transfer processing line according to any one of claims 1 to 3, wherein the workpiece is conveyed.