JP6532761B2 - Pre-notch forming apparatus and pre-notch forming method - Google Patents

Description

  According to the present invention, for example, in order to form a channel steel having flanges on both sides of a flat web or a lip-formed channel steel having a lip on the end of the flange by roll forming, the front of the roll forming line The present invention relates to a pre-notch forming apparatus and a pre-notch forming method for performing pre-notch forming such as drilling in a pre-notch forming line which is a process.

  Generally, in pre-notch forming performed prior to roll forming, processing such as pressing, cutting, notching, and drilling is performed on a strip-like metal plate. In the pre-notch forming, the respective processes are sequentially performed on one forming line. In this case, since the processing time is long for a long metal plate or a metal plate with a large number of holes, and the processing time is short for a short metal plate or a metal plate with a small number of holes, start the latter processing until the former processing is completed. There will be situations where you can not Therefore, there is a disadvantage that the molding time of pre-notch molding is increased as a whole.

  In connection with this type of roll forming, for example, a forming line moving cold roll forming apparatus is disclosed in Patent Document 1. In this roll forming apparatus, the roll forming line includes a first forming line and a second forming line parallel thereto, and is installed on one carriage. A gear device for distributing roll driving force is provided between the first forming line and the second forming line. A switching gear is installed in the roll driving force distribution gear device, and a reduction gear for transmitting rotational force to the switching gear and an electric motor for supplying driving force to the reduction gear are mounted on a carriage.

  And when changing the size of the roll in the 1st forming line or the 2nd forming line, the running wheel which can move the bogie in the direction orthogonal to the direction in which the roll forming line extends is equipped on the bogie.

Unexamined-Japanese-Patent No. 6-126335

  In the roll forming apparatus of the conventional configuration described in the patent document 1, when changing the size of the rolls of the first forming line or the second forming line, the time required for the preparation operation can be omitted, and the replacement is substantially performed. It is possible to reduce the time and effort required to

  However, the roll forming itself is performed in either one of the first forming line or the second forming line. For this reason, for example, in pre-notch forming in which drilling is performed prior to roll forming, when pre-notch forming of a short metal plate or a metal plate having a small number of holes is performed after pre-notch forming of a long metal plate or a metal plate having a large number of holes. Since the former molding time is long and the latter molding time is short, the latter molding must be stopped until the former molding is finished.

Therefore, there is a problem that the molding time of the whole pre-notch molding becomes long and the productivity is lowered.
Therefore, an object of the present invention is to provide a pre-notch forming apparatus and a pre-notch forming method capable of suppressing the stopping of the forming line and improving the productivity.

In order to achieve the above object, the pre-notch forming apparatus of the present invention includes cutting and boring of the metal plate before bending the strip-like metal plate by roll forming , and the length and the number of holes are different. A pre-notch forming apparatus for sequentially performing pre-notch forming for forming an intermediate molded product on a pre-notch forming line, wherein the pre-notch forming line comprises an upstream side pre-notch forming line and a downstream side pre-notch forming line extending in parallel. the stock area and the downstream Purenotchi molding line upstream Purenotchi molding line first punch apparatus is installed second punch apparatus is installed faces provided, upstream Purenotchi molding line flop Renotchi molding It distributes to the downstream side pre-notch forming line and carries out molding and forward traveling in the upstream side pre-notch forming line Te comprising a traverser mechanism to shift to the downstream side Purenotchi forming line intermediate molded article reached the stock area from the upstream side Purenotchi forming line to the stock area, the intermediate molded article Purenotchi molding a metal plate on the upstream side Purenotchi forming line After obtaining, the intermediate formed product is transferred to the downstream side pre-notch forming line by a traverser mechanism, and configured to continue pre-notch forming in the downstream side pre-notch forming line, and the stock region has a length of the longest intermediate formed product Is set to be stocked in the stock area, and the traverser mechanism transfers various intermediate molded articles having different lengths and number of holes reaching the stock area from the upstream pre-notch forming line to the downstream pre-notch forming line It is characterized by

The traverser mechanism allows the intermediate molded product to travel until it reaches the front end of the stock area without stopping midway in the stock area, and the intermediate molded product reaching the front end of the stock area downstream from the upstream pre-notch forming line It is preferable to transfer to the side pre-notch forming line.
Preferably, the stock area is divided into a plurality of divided areas , and the intermediate molded product is configured to travel in each divided area in order .

Also, Purenotchi molding method is the above Purenotchi forming apparatus Purenotchi molding method using, when the intermediate molded article obtained by Purenotchi molding a metal plate on the upstream side Purenotchi molding line has reached the stock area, The intermediate molded product is detected by the position detection sensor, and the Traverser mechanism is activated by this detection to transfer the intermediate molded product from the upstream pre-notch molding line to the downstream pre-notch molding line, and the downstream pre-notch molding line It is characterized in that the pre-notch forming is continued, and the following metal plate is pre-notched in the upstream pre-notch forming line.

  According to the pre-notch forming apparatus of the present invention, it is possible to suppress the stopping of the forming line and to improve the productivity.

(A)-(h) is an explanatory view showing typically the pre notch process in the important section of the pre notch forming device in an embodiment. (A)-(g) is explanatory drawing which shows typically the pre notch process in the principal part of the conventional pre notch forming apparatus. (A) is a front view which shows the state which a strip | belt-shaped metal plate is located between position control protrusions in the upstream side pre notch forming line, (b) is a top view of (a). (A) shows a state in which the strip-like metal plate transitions from the upstream pre-notch forming line to the downstream pre-notch forming line in a state in which the position control projections on the inner side of the upstream side pre-notch forming line and the downstream side pre-notch forming line are embedded Front view, (b) is a plan view of (a). (A) is a front view showing a state in which the strip-like metal plate has completed transition from the upstream side pre-notch forming line to the downstream side pre-notch forming line, (b) is a plan view of (a). FIG. 5A is a front view showing a state in which the position control projections on the inner side of the upstream pre-notch forming line and the downstream pre-notch forming line protrude from the state of FIG. 5A and the metal plate can move the downstream side pre-notch forming line. (B) is a top view of (a). Schematic explanatory drawing which shows the whole system of roll forming. (A) is a top view which shows the state which drilled in the metal plate in the upstream side pre notch forming line, (b) is a top view of the state which drilled in the metal plate in the downstream side pre notch forming line. The front view which shows the channel steel which has a lip part. (A) is a front view which shows the state which roll-forms a strip shaped metal plate and shape | molds a lip part, (b) is a front view which shows the state which shape | molds a flange part from the state of (a).

Hereinafter, an embodiment of the present invention will be described in detail based on FIGS. 1 to 10.
As shown in FIG. 7, the overall system of roll forming in this embodiment can be roughly divided into a prenotch forming apparatus 11 for performing prenotch forming prior to roll forming, and a roll forming apparatus for performing roll forming after prenotch forming. And 12. The pre-notch forming device 11 is an uncoiler device 14 for making a strip-like metal plate (steel plate) 13 wound in a coil shape flat on a pre-notch forming line 24, a leveler device 15 for making the metal plate 13 flat, metal A traveling cutting device 16 for cutting the plate 13, a first drilling device 17 for drilling a predetermined part of the metal plate 13, a traverser mechanism 18, a second drilling device 19 and the like are provided.

  On the other hand, the roll forming apparatus 12 is configured by a roll forming machine 21 for bending the intermediate formed product 20 formed by the pre-notch forming apparatus 11 and performing roll forming, and a piler 23 for winding the final formed product 22 formed by roll forming. It is done. The roll forming machines 21 are disposed to face each other in the left and right direction, and the roll forming machines 21 are arranged in multiple stages along a roll forming line 25 to bend and form the intermediate formed product 20.

  As shown in FIGS. 1 and 7, the pre-notch forming line 24 is divided into an upstream side pre-notch forming line 24a extending in parallel and a downstream side pre-notch forming line 24b. At the upstream side pre-notch forming line 24a and the downstream side pre-notch forming line 24b, drive rollers (not shown) are disposed, respectively, so that the metal plate 13 and the intermediate formed product 20 can travel forward.

  Then, as shown in FIG. 8A, in the upstream side pre-notch forming line 24a, the metal plate 13 is pre-notched by, for example, a drilling process, and the first intermediate molded product 20a having the large diameter holes 26 is formed. Further, as shown in FIG. 8B, in the downstream side pre-notch forming line 24b, the first intermediate molded product 20a is pre-notch-formed by drilling and a second intermediate molding having a large diameter hole 26 and a small diameter hole 27. An article is molded.

  As shown by a two-dot chain line in FIG. 10A, the roll forming machine 21 bends both side end portions of the metal plate 13 to form a lip portion 28. Subsequently, as shown in FIG. 10 (b), both end portions of the metal plate 13 having the lip portion 28 are bent by the roll forming machine 21, and the flange portion 29 is formed. As shown in FIG. 9, the roll forming device 12 forms a channel steel 30 having a lip 28.

  As shown in FIGS. 3 (a) and 3 (b), in the upstream side pre-notch forming line 24a and the downstream side pre-notch forming line 24b, a plurality of positions as position regulating members on both sides of the metal plate 13 or the intermediate molded product 20. The restricting projections 31 are provided at predetermined intervals to project, and the metal plate 13 or the intermediate molded product 20 travels between the position restricting members 31.

  As shown in FIG. 1, in the region where the upstream side pre-notch forming line 24a and the downstream side pre-notch forming line 24b face each other, the first intermediate molded product 20a pre-notched by the upstream side pre-notch forming line 24a is stocked. A stock area 32 is provided. That is, the stock region 32 includes the first punching device 33 as the pre-notch forming device 11 in the upstream side pre-notch forming line 24a and the second punching device 34 as the pre-notch forming device 11 in the downstream side pre-notch forming line 24b. It is provided between.

  As shown by the alternate long and two short dashes lines in FIGS. 3A and 3B, in the stock region 32, the first intermediate molded product 20a which is molded by the upstream pre-notch molding line 24a and reaches the stock region 32 is A traverser mechanism 18 is provided for transitioning from the side pre-notch forming line 24a to the downstream side pre-notch forming line 24b. The traverser mechanism 18 is configured by a belt conveyor or the like, and transfers the first intermediate molded product 20a from the upstream side pre-notch forming line 24a to the downstream side pre-notch forming line 24b.

  That is, as shown in FIGS. 4 (a) and 4 (b), when the traverser mechanism 18 is operated, the position restricting projections 31 on the downstream side pre-notch forming line 24b are sunk in the upstream side pre-notch forming line 24a. In the downstream side pre-notch forming line 24b, the position control projection 31 on the upstream side pre-notch forming line 24a side is inserted.

  In addition, a position detection sensor 35 such as a photoelectric sensor is disposed at the front end of the upstream pre-notch molding line 24a, detects the first intermediate molded product 20a reaching the front end of the stock region 32, and detects the traverser mechanism 18 It is configured to operate. By activating the traverser mechanism 18, the first intermediate molded product 20a is transferred from the upstream side pre-notch forming line 24a to the downstream side pre-notch forming line 24b.

  Then, as shown in FIGS. 5A and 5B, by continuing to operate the traverser mechanism 18, the first intermediate molded product 20a on the upstream pre-notch molding line 24a is completely onto the downstream pre-notch molding line 24b. Transition to

  Thereafter, as shown in FIGS. 6 (a) and 6 (b), at the same time as the position control projection 31 on the downstream side pre-notch forming line 24b in the upstream side pre-notch forming line 24a protrudes, the upstream side pre-notch on the downstream side pre-notch forming line 24b The position control protrusion 31 on the molding line 24 a side protrudes. Therefore, the first intermediate molded product 20a on the downstream side pre-notch molding line 24b travels on the downstream side pre-notch molding line 24b, and is pre-notched by the second punching device 34.

  Thus, the metal plate 13 is pre-notched at the upstream side pre-notch forming line 24 a to form the first intermediate molded product 20 a, and the first intermediate molded product 20 a is not waited in the stock region 32, by the traverser mechanism 18. It is transferred to the downstream side pre-notch molding line 24b, where it is further subjected to pre-notch molding to form the second intermediate molded product 20b.

  As shown in FIG. 1, the stock area 32 is divided into a plurality of (three in this embodiment) partition areas 36 (a first partition area 361, a second partition area 362, and a third partition area 363). The first intermediate molded product 20a is configured to be stocked in the area 36, respectively.

  Since the pre-notch molding is performed continuously, the first intermediate molded product 20a pre-notch molded in the upstream pre-notch molding line 24a is stocked in order in the stock region 32. Then, the traverser mechanism 18 transfers, for example, the leading first intermediate molded product 20 a of the first intermediate molded product 20 a reaching the stock region 32 to the downstream side pre-notch molding line 24 b. The length of the stock area 32 is set such that the longest first intermediate molded product 20 a is stocked in the stock area 32.

Next, a pre-notch forming method using the pre-notch forming device 11 configured as described above will be described along with the operation.
As shown in FIGS. 1 (a) to 1 (h), a case where six types of metal plates 13 [(I) to (VI)] having different lengths and the number of holes are sequentially pre-notched will be described. The first punching device 33 is installed on the upstream side pre-notch molding line 24a to perform pre-notch molding, and the second drilling device 34 is installed on the downstream side pre-notch molding line 24b to perform pre-notch molding. Then, at a position where the upstream side pre-notch forming line 24a and the downstream side pre-notch forming line 24b are opposite to each other, a stock region 32 in which the first intermediate molded product 20a pre-notched by the first punching device 33 is stocked is provided. The stock area 32 is divided into a first divided area 361, a second divided area 362 and a third divided area 363 from the upstream side. The leading first intermediate molded product 20a and the second intermediate molded product 20b are formed long, and the subsequent metal plate 13 is formed short.

  As shown in FIG. 1A, in the upstream pre-notch forming line 24a, the first intermediate molded product 20a (II) reaches a position where it straddles the first divided area 361 to the second divided area 362 of the stock area 32. The subsequent metal plate 13 (III) is pre-notched in the first drilling device 33. On the other hand, in the downstream side pre-notch molding line 24b, the first intermediate molded product 20a comes out of the third sectioned area 363 of the stock area 32 and pre-notch molding is performed by the second punching device 34. I) is formed.

  As shown in FIG. 1 (b), in the upstream pre-notch forming line 24 a, the first intermediate molded product 20 a (II) reaches a position straddling the second divided area 362 to the third divided area 363 of the stock area 32, The subsequent metal plate 13 is pre-notched by the first punching device 33. On the other hand, in the downstream side pre-notch forming line 24b, the second intermediate molded product 20b (I) after completion of the pre-notch forming is moved forward and is not shown in FIG. 1 (b).

  As shown in FIG. 1C, in the upstream pre-notch forming line 24a, the first intermediate molded product 20a (II) advances from the second section 362 to the third section 363 of the stock area 32. The subsequent first intermediate formed product 20a (III) enters the first divided area 361, and the subsequent metal plate 13 (IV) is pre-notched by the first punching device 33.

  As shown in FIG. 1 (d), in the upstream pre-notch forming line 24a, the front end of the first intermediate molded product 20a (II) reaches the front end of the third sectioned area 363 and stops there, The two first intermediate molded articles 20 a (III) and the first intermediate molded articles 20 a (IV) reach the first compartment area 361.

  As shown in FIG. 1 (e), the first intermediate molded product 20a (II) stopped at the front end of the third sectioned area 363 is detected by the position detection sensor 35, and the traverser mechanism 18 operates to perform the first intermediate molding The article 20a (II) moves from the upstream pre-notch forming line 24a to the downstream pre-notch forming line 24b. Therefore, the subsequent first intermediate molded product 20a (III) enters the second divided area 362 without stopping, and the subsequent first intermediate molded product 20a (IV) enters the first divided area 361 and then The metal plate 13 (V) is pre-notched by the first punching device 33.

  As shown in FIG. 1 (f), in the upstream pre-notch forming line 24a, the first intermediate molded product 20a (III) enters the third sectioned area 363, and the subsequent first intermediate molded product 20a (IV) While entering the two-compartment area 362, the subsequent first intermediate molded product 20 a (V) enters the first compartment area 361. Further, the subsequent metal plate 13 (VI) is pre-notched by the first punching device 33. On the other hand, in the downstream side pre-notch forming line 24b, the first intermediate molded product 20a (III) advances and is pre-notched by the second punching device 34.

  As shown in FIG. 1 (g), in the upstream pre-notch forming line 24a, the front end of the first intermediate molded product 20a (III) reaches the front end of the third divided area 363 and stops. The subsequent first intermediate molded product 20a (IV) advances in the second partition area 362, and the subsequent first intermediate molded product 20a (V) advances in the first partition area, and the subsequent first intermediate molded product 20a (VI) reach into the first partition area 361. On the other hand, in the downstream side pre-notch molding line 24b, the first intermediate molded product 20a (II) is further advanced, and is prenotched by the second punching device 34 to form the second intermediate molded product 20b (II).

  As shown in FIG. 1 (h), the first intermediate molded product 20a (III) that has reached the front end of the third sectioned area 363 is detected by the position detection sensor 35, and the traverser mechanism 18 is activated to upstream pre-notch. Transition from the forming line 24a to the downstream side pre-notch forming line 24b. In this case, the prenotch molding of the first intermediate molded product 20a (II) by the second punching device 34 is finished, and the second intermediate molded product 20b (II) is formed.

  For this reason, in the upstream side pre-notch molding line 24a, the subsequent first intermediate molded product 20a (IV) enters the third partition area 363 without stopping, and the subsequent first intermediate molded product 20a (V) becomes the second partition While entering the area 362, the subsequent first intermediate molded product 20 a (VI) enters the first compartment area 361.

  Thus, in the present embodiment, when the first intermediate molded product 20a pre-notched by the first punching device 33 in the upstream pre-notch forming line 24a reaches the front end of the stock region 32, the first intermediate formed product 20a The molded product 20a is configured to be transferred to the downstream side pre-notch molding line 24b by the traverser mechanism 18.

  Therefore, the first intermediate molded product 20a transferred to the downstream side pre-notch forming line 24b can be pre-notched by the second punching device 34, and without stopping the subsequent metal plate 13 in the upstream side pre-notch forming line 24a. Pre-notch molding by the first punching device 33 can also be continued. Therefore, regardless of the length of the metal plate 13 and the number of holes, it is possible to smoothly advance the pre-notch formation without delay.

Next, in order to compare the pre-notch forming method of the present embodiment with the conventional pre-notch forming method, a conventional pre-notch forming method will be described.
As shown in FIGS. 2 (a)-(g), the conventional pre-notch forming line 41 is one line. As shown in FIG. 2A, the first intermediate molded product 20a is pre-notched by the second punching device 34 to form a second intermediate molded product 20b (I). The first intermediate molded product 20 a (II) pre-notched by the first punching device 33 is located between the first punching device 33 and the second punching device 34. The subsequent metal plate 13 (III) reaches the first punching device 33 and is pre-notched.

As shown in FIG. 2 (b), the first intermediate molded product 20 a (II) advances as it is, and the metal plate 13 (III) is pre-notched by the first punching device 33.
As shown in FIG. 2 (c), the first intermediate molded product 20a (II) is further advanced, and the metal plate 13 (III) is prenotched by the first punching device 33 to form the first intermediate molded product 20a ( III) is formed.

  As shown in FIG. 2D, the first intermediate molded product 20a (II) further advances, and the first intermediate molded product 20a (III) whose prenotch molding is finished by the first punching device 33 also advances.

  As shown in FIG. 2 (e), the first intermediate molded product 20a (II) is pre-notched to reach the second punching device. Therefore, the first intermediate molded product 20a (III) pre-notched by the first punching device 33 can not advance until the pre-notch molding of the second intermediate molded product 20b is completed, as shown in FIG. 2 (d). Stay in the position shown.

  As shown in FIG. 2 (f), the first intermediate molded product 20a (II) continues pre-notch molding by the second punching device 34 to form a second intermediate molded product 20b (II). For this reason, the first intermediate molded product 20a (III) can not advance and still remains at the position shown in FIG. 2 (d).

  As shown in FIG. 2 (g), the second intermediate molded product 20b (II) is in a state where pre-notch molding by the second punching device 34 is finished. Therefore, the first intermediate molded product 20a (III) pre-notched by the first punching device 33 can be advanced, and the metal plate 13 (IV) reaches the first punching device 33 and pre-notched. Ru.

  As described above, in the conventional pre-notch forming method, since the pre-notch forming line 41 is one line, it is not possible to prevent the subsequent metal plate 13 from stopping due to the length and the number of holes of the metal plate 13. Therefore, the pre-notch forming is stagnant, and the productivity in the whole roll forming system is reduced.

The effects exerted by the above embodiments are summarized below and described.
(1) In the pre-notch forming apparatus 11 of the present embodiment, pre-notch forming is divided into the upstream side pre-notch forming line 24a and the downstream side pre-notch forming line 24b. Then, a traverser mechanism 18 is provided for transferring the first intermediate molded product 20a formed by the upstream side pre-notch forming line 24a to the stock region 32 from the upstream side pre-notch forming line 24a to the downstream side pre-notch forming line 24b. The first intermediate molded product 20a pre-notched by the upstream side pre-notch forming line 24a is transferred to the downstream side pre-notch forming line 24b by the traverser mechanism 18 and the pre-notch forming is continued by the downstream side pre-notch forming line 24b. .

  Therefore, for example, when pre-notch forming the long metal plate 13 or the metal plate 13 having a large number of holes, the pre-notch forming can be continuously performed without stopping the subsequent metal plate 13. Therefore, the entire pre-notch formation can be smoothly advanced without delay.

Therefore, according to the pre-notch forming device 11 of the present embodiment, it is possible to suppress the stopping of the forming line and improve the productivity.
(2) The traverser mechanism 18 transfers the first intermediate molded product 20a from the upstream pre-notch molding line 24a to the downstream pre-notch molding line 24b without waiting at the stock region 32. Therefore, stopping the first intermediate molded product 20a halfway can be avoided, and the smooth advance of the pre-notch molding can be achieved.

  (3) The stock area 32 is divided into a plurality of divided areas 36, and the first intermediate molded product 20a can be stocked in each divided area 36. Therefore, the plurality of first intermediate molded products 20a can be held in the stock region 32, and the pre-notch molding can be efficiently advanced.

  (4) When the pre-notch molding of the first intermediate molded product 20a immediately before in the downstream side pre-notch molding line 24b ends, the traverser mechanism 18 moves the first intermediate molded product 20a immediately after existing in the stock region 32 upstream. Transition from the pre-notch forming line 24a to the downstream side pre-notch forming line 24b. For this reason, it is possible to smoothly advance the pre-notch forming in the two pre-notch forming lines 24a and 24b, and to efficiently perform the pre-notch forming.

  (5) The traverser mechanism 18 moves the first intermediate molded product 20a located at the top of the first intermediate molded product 20a reaching the stock region 32 from the upstream side pre-notch forming line 24a to the downstream side pre-notch forming line 24b. Migrate. Therefore, the configuration of the traverser mechanism 18 can be simplified, and the first intermediate molded product 20a to be transferred from the upstream pre-notch forming line 24a to the downstream pre-notch forming line 24b in the stock region 32 can be easily detected. Can be activated.

  (6) The length of the stock area 32 is set such that the longest first intermediate molded product 20 a is stocked in the stock area 32. Therefore, the stock area 32 can be stocked with all kinds of first intermediate molded products 20a, and the function of the stock area 32 can be fulfilled.

  (7) In the pre-notch molding method, when the first intermediate molded product 20 a obtained by pre-notch molding the metal plate 13 in the upstream side pre-notch molding line 24 a reaches the stock region 32, the first intermediate molded product 20 a It moves to the downstream side pre-notch forming line 24 b by the traverser mechanism 18. Then, the prenotch molding of the first intermediate molded product 20a is continued at the downstream side pre-notch molding line 24b to form the second intermediate molded product 20b.

  Therefore, the pre-notch molding can be continued without stopping the first intermediate molded product 20a, and the entire pre-notch molding can be smoothly performed. Therefore, according to the pre-notch forming method, it is possible to suppress the stopping of the forming line and to improve the productivity.

In addition, it is also possible to change and implement the said embodiment as follows.
The plurality of first intermediate molded products 20a reaching the plurality of divided regions 36 are transferred by the traverser mechanism 18 from the upstream side pre-notch forming line 24a to the downstream side pre-notch forming line 24b simultaneously or in an appropriate selection. It may be configured.

The length and / or the number of the divided regions 36 may be set arbitrarily according to the desired final molded product 22.
As the pre-notch forming in the upstream side pre-notch forming line 24a and the downstream side pre-notch forming line 24b, notch processing or cutting may be performed. The distribution of pre-notch molding in the upstream pre-notch molding line 24a and the downstream pre-notch molding line 24b may be changed as appropriate.

  11 pre-notch forming apparatus 13 metal plate 18 traverser mechanism 20a first intermediate molded product 20b second intermediate molded product 24a upstream pre-notch forming line 24b downstream side pre-notch forming line 32 Stock area, 36 ... compartmental area, 361 ... first compartmental area, 362 ... second compartmental area, 363 ... third compartmental area.

Claims (4)

Before folding bending a strip-shaped metal plate by roll forming, wherein the cutting and drilling of the metal plate, sequentially for performing Purenotchi molding for molding the length and number of holes of different intermediate product on Purenotchi molding line Pre-notch forming apparatus of
The pre-notch forming line is composed of an upstream side pre-notch forming line and a downstream side pre-notch forming line extending in parallel, and an upstream side pre-notch forming line on which the first drilling device is installed and a second drilling device are installed the stock area where the downstream Purenotchi forming line opposing provided, as well as carried by distributing the flop Renotchi molded upstream Purenotchi molding line and downstream Purenotchi molding line, is molded and forward traveling upstream Purenotchi molding line stock are A traverser mechanism was provided in the stock area to transfer the intermediate formed product reaching the area from the upstream pre-notch forming line to the downstream pre-notch forming line, and the metal plate was pre-notched on the upstream pre-notched forming line to obtain an intermediate formed product Later, the intermediate molded product is pre-notched downstream with a traverser mechanism It moves to the line, and configured to continue Purenotchi molding downstream Purenotchi molding line,
The length of the stocking area is set such that the longest intermediate molded product is stocked in the stocking area, and the traverser mechanism changes various intermediate molded products having different lengths and numbers of holes reaching the stocking area. A pre-notch forming apparatus characterized by transitioning from an upstream side pre-notch forming line to a downstream side pre-notch forming line. The traverser mechanism allows the intermediate molded product to travel until it reaches the front end of the stock area without stopping midway in the stock area, and the intermediate molded product reaching the front end of the stock area downstream from the upstream pre-notch forming line The pre-notch forming apparatus according to claim 1, wherein the apparatus moves to a side pre-notch forming line. The pre-notch forming apparatus according to claim 1 or 2, wherein the stock area is divided into a plurality of divided areas , and the intermediate molded product travels in each divided area in order . A pre-notch forming method using the pre-notch forming device according to any one of claims 1 to 3 , wherein
When an intermediate molded product obtained by pre-notch molding a metal plate in the upstream pre-notch molding line reaches the stock region, the intermediate molded product is detected by the position detection sensor, and the traverser mechanism is activated by this detection to perform intermediate Transfer the formed product from the upstream pre-notch forming line to the downstream pre-notch forming line, continue pre-notch forming of the intermediate formed product in the downstream pre-notch forming line, and pre-notch forming the following metal plate in the upstream pre-notch forming line A pre-notch molding method characterized by