JP2012006056A - Apparatus for manufacturing metal core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a metal core that controls a slit width more accurately.SOLUTION: The apparatus for manufacturing a metal core includes: a lancing unit for making a slit in a planar material to divide the material into a connection portion and a cut portion; a first anvil unit for planarizing the material; a first stretch unit for milling the connection portion of the material; a second anvil unit for planarizing the material; a slit width measurement unit for measuring the slit width of the cut portion of the material; and a milling amount adjustment unit for adjusting the material drawing amount of the second anvil unit based on the measurement result of the slit width measurement unit.

Description

  The present invention relates to a metal core manufacturing apparatus.

  Weather strips that are placed in the gaps of automobile doors, etc. to prevent wind and rain from entering the automobile, and welts that are attached to the interior and body of automobiles are generally placed inside resin and rubber materials. It has a core material (metal core), and a desired effect can be achieved by stably maintaining a certain shape such as a U-shape by the core material and firmly fitting it into the body of an automobile.

  In general, a metal core is manufactured by cutting a plate-shaped material to form a connection portion and a cutting portion, and extending to form a slit in the cutting portion, thereby forming the material into a substantially ladder shape. As a known method for producing a metal core, for example, Patent Document 1 below discloses a method for producing a metal core.

JP 2001-232523 A

  As described above, the metal core is an important member used in various parts of an automobile, and in some cases, the metal core may reach several tens of meters per automobile. For this reason, it is possible to reduce the weight and cost of recent automobiles by reducing the amount of metal used for the metal core. For example, the current metal core thickness is about 0.5 mm, but if it can be reduced to about 0.3 mm, the weight can be reduced by 40%.

  However, as described above, the metal core forms a slit in the cut portion by rolling a plate-shaped material, and thinning the metal core material means that it is difficult to adjust the slit width. Specifically, when the error in the thickness of the material is about 0.1 mm, the error is about 20% if the thickness of the material is about 0.5 mm, but the thickness of the material is about 0.3 mm. If so, the error is about 33%.

  On the other hand, the performance of the metal core largely depends on the uniformity of the slit width. Specifically, when the width of the slit is not uniform, there is a problem that when the metal core is bent, the force is concentrated on the non-uniform portion, so that the portion is easily broken. For this reason, the width of the slit must be made as uniform as possible, but no study has been made on how to solve the non-uniformity of the slit width caused by the error as described above. The same applies to the above-mentioned Patent Document 1.

  In view of the above problems, an object of the present invention is to provide a metal core manufacturing apparatus capable of controlling the slit width more accurately.

  A metal core manufacturing apparatus according to one aspect of the present invention that solves the above problems includes a lancing unit that divides a material into a connection part and a cutting part, a first anvil unit that flattens the material, and a material connection Based on the measurement results of the first stretch unit that rolls the part, the second anvil unit that flattens the material, the slit width measurement unit that measures the slit width of the cut part of the material, and the slit width measurement unit A rolling amount adjusting unit for adjusting a material drawing amount of the anvil unit.

  As mentioned above, the metal core manufacturing apparatus which can control a slit width more correctly according to this invention can be provided.

It is a figure showing the outline of the metal core manufacturing device concerning an embodiment. It is a figure which shows the outline of the shape of the plate-shaped raw material which concerns on embodiment. It is a figure which shows the outline | summary of the wound plate-shaped raw material which concerns on embodiment. It is a figure which shows the outline of the raw material with the cut based on embodiment. It is a figure which shows the schematic of the cross section by the surface perpendicular | vertical to the feed direction of the raw material M of the lancing unit which concerns on embodiment. It is the schematic at the time of seeing the housing of the lancing unit concerning an embodiment from the side. It is a figure which shows the outline of the 1st anvil unit which concerns on embodiment. It is the schematic at the time of seeing the housing of the 1st anvil unit which concerns on embodiment from the side surface. It is a figure which shows the outline of the raw material in which the slit which concerns on embodiment was formed. It is a figure which shows the outline of the 1st stretch unit which concerns on embodiment. It is a schematic sectional drawing of the roll surface of one roll of the 1st stretch unit which concerns on embodiment. It is the schematic at the time of seeing the housing of the 1st stretch unit which concerns on embodiment from the side surface. It is a figure which shows the outline of the 2nd stretch unit which concerns on embodiment. It is the schematic at the time of seeing the housing of the 2nd stretch unit which concerns on embodiment from the side surface. It is a figure which shows the outline of the 2nd anvil unit which concerns on embodiment. It is the schematic at the time of seeing the housing of the 2nd anvil unit which concerns on embodiment from the side surface. It is a figure which shows the outline of the slit width measurement unit which concerns on embodiment. It is a figure which shows the outline of the 1st dancer unit which concerns on embodiment. It is a figure which shows the outline of the 2nd dancer unit which concerns on embodiment. It is a figure which shows the outline of the 3rd dancer unit which concerns on embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. However, the present invention can be carried out in many different modes, and is not limited to the embodiments illustrated below.

  FIG. 1 is a schematic view of a metal core manufacturing apparatus (hereinafter referred to as “the present apparatus”) 1 according to the present embodiment. As shown in the figure, the present apparatus 1 is a rolling unit 2 that cuts a material M into a connection part and a cutting part, a first anvil unit 3 that flattens the material, and a material connection part. The first stretch unit 4 to be rolled, the second stretch unit 5 to roll the connecting portion of the material, the second anvil unit 6 to flatten the material, and the slit width measurement to measure the slit width of the cut portion of the material The unit 7 and a pull-in amount adjusting unit 8 that adjusts the material pull-in amount of the second anvil unit based on the measurement result of the slit width measuring unit.

  The apparatus 1 also includes a first dancer unit 91 between the lancing unit 2 and the first anvil unit 3, and a second dancer unit 92 between the first anvil unit 3 and the first stretch unit 4. The third dancer unit 93 is provided between the first stretch unit 4 and the second stretch unit 5.

  In the present embodiment, the lansing unit 2 is capable of drawing a plate-shaped material, cutting the material, dividing it into a connection part and a cutting part, and sending the material to the first anvil unit 3 at the subsequent stage.

  In the present embodiment, the plate-like material M that is the material of the metal core is an elongated plate-like material as shown in FIG. 2, and is generally wound up in a spiral shape as shown in FIG. Then, it is drawn by the lancing unit 2 etc. and processed. The material is a metal that can be rolled.

  Here, FIG. 4 shows a schematic view of a plate-like material that has been cut by the lansing unit 2. Here, the “cutting portion” means a portion where a cut is made in the width direction of the material, and the “connection portion” means a portion other than the cutting portion where no cut is made in the width direction of the material. . Depending on the shape of the teeth that cut the material M, the cut material M often has a step formed by cutting.

  In addition, as described above, the lancing unit 2 in the present embodiment is not limited as long as the plate-like material M that is the raw material of the metal core can be cut, but for example, a roll surface on which teeth are formed is used. A pair of rolls 211 and 221 arranged to be engaged with each other, roll rotation shafts 212 and 222 that rotatably support the pair of rolls 211 and 221, and a roll driving unit 23 that rotates the rotation shafts 212 and 222. And have.

  Here, the roll driving unit 23 is not limited, but preferably includes, for example, a rotating motor 231 and a chain 232 that transmits the rotation of the motor 231 to the rotating shaft 22 + 2. The motor 231 is preferably an inverter motor in order to keep the rotational speed stable in the operating state. The chain 232 of the motor 231 is wound around the shaft 2311 of the motor 231 and one of the rotating shafts 222 and transmits the rotation of the motor 231 to the rotation of the rotating shaft 222. In addition to 221, gears 213 and 223 are fixed, and the rotation of the rotation shaft 222 can be transmitted to the other rotation shaft 212, and the same rotation number can be maintained. FIG. 5 shows a schematic cross-sectional view cut by a plane perpendicular to the feed direction of the material M of the lancing unit 2 having this configuration.

  The lancing unit 2 of the present embodiment further includes a roll rotation axis distance adjusting unit 24 that adjusts the distance between the rotation axes 212 and 222. The roll rotation axis distance adjustment unit 24 is not limited, but includes bearings 241 and 242 that hold both ends of the rotation shafts 212 and 222, housings 243 and 244 that hold the bearings 241 and 242, respectively, It is preferable to have a repulsion member 245 that generates a repulsive force between 243 and 244 and a tightening member 246 that tightens between the housings 243 and 244. By doing so, it becomes possible to apply a strong force to the material by shortening the distance between the housings 243, 244, that is, the distance between the rotation axes, by tightening using the tightening member 246, By loosening the fastening member 246, the distance between the housings 243 and 244, that is, the distance between the rotating shafts can be increased to weaken the force applied to the material. FIG. 6 shows a schematic view of the lansing unit 2 when viewed from the side including the housings 243 and 244. In this case, in at least one of the housings, it is preferable that a pressure detection device such as a load cell is disposed between the housing and the bearing because fine pressure adjustment can be performed.

  The tightening member 246 is not limited, but, for example, penetrates the housing perpendicular to the tightening direction and penetrates the housing in parallel to the tightening direction with a shaft 2461 that rotatably connects the housing. And a screw member 2462. In this case, it can be tightened by turning the screw member. Of course, it is also possible to use only a plurality of screw members 2462 if the tightening force can be balanced.

  In the present embodiment, the first anvil unit 3 is provided in the subsequent stage of the lancing unit 2, and the plate-like material M can be flattened by the lancing unit 2. More specifically, the material M cut by the lance unit 2 generally has a level difference (see, for example, FIG. 4), and when this material is rolled into a subsequent stretch unit, this level difference However, since accurate slit formation may be hindered, accurate slit formation can be realized by making the material M flat again. The first anvil unit 3 can draw in the plate-like material M as in the case of the above-mentioned lansing unit 2 and can send the material to the first stretch unit 4 in the subsequent stage after flattening. Is.

  In addition, the first anvil unit 3 in the present embodiment is not limited as long as it can flatten the plate-like material M with the cut as described above. For example, a flat roll surface corresponds to the first anvil unit 3. A pair of rolls 311, 321 arranged in a row, a roll rotation shaft 312, 322 for rotatably supporting the pair of rolls 311, 321 and a roll drive unit 33 for rotating the rotation shaft 312, 322. is doing.

  Here, the roll drive unit 33 is not limited, but, for example, as shown in the above diagram, the roll drive unit 33 may include a rotating motor 331 and a chain 332 that transmits the rotation of the motor to the rotating shaft 322. preferable. The motor is preferably an inverter motor in order to keep the rotational speed stable in the operating state. The chain 332 of the motor 331 is wound around the shaft 3311 of the motor 331 and one of the rotating shafts 322, and the rotation of the motor 331 is transmitted to the rotation of the rotating shaft 322. 321 and gears 323 and 313 are fixed, and the rotation of the rotation shaft 322 can be transmitted to the other rotation shaft 312 so that the same number of rotations can be maintained. In FIG. 7, the schematic of the cross section cut | disconnected by the surface perpendicular | vertical to the feed direction of the raw material M of the 1st anvil unit 3 by this structure is shown.

  In addition, the first anvil unit 3 of the present embodiment includes a roll rotation axis distance adjustment unit 34 that adjusts the distance between the rotation axes 312 and 322. The roll rotation axis distance adjustment unit 34 is not limited, but includes bearings 341 and 342 that respectively hold both ends of the rotation shafts 312 and 322, housings 343 and 344 that respectively hold the bearings 341 and 342, and a housing It is preferable to have a repulsion member 345 that generates a repulsive force between 343 and 344 and a tightening member 346 that tightens between the housings 343 and 344. By doing so, it becomes possible to apply a strong force to the material by shortening the distance between the housings 343 and 344, that is, the distance between the rotation axes, by tightening using the tightening member 346. By loosening the tightening member 346, the distance between the housings 343 and 344, that is, the distance between the rotating shafts can be lengthened to weaken the force applied to the material. A schematic view of the first anvil unit 3 including the housings 343 and 344 when viewed from the side is shown in FIG. In this case, in at least one of the housings, it is preferable that a pressure detection device such as a load cell is disposed between the housing and the bearing because fine pressure adjustment can be performed.

  The fastening member 346 is not limited, but, for example, penetrates the housing perpendicular to the fastening direction, and penetrates the housing parallel to the fastening direction with a shaft 3461 that rotatably connects the housing. And a screw member 3462. In this case, it can be tightened by turning the screw member. Of course, it is possible to use only a plurality of screw members 3462 as long as the tightening force can be balanced.

  In this embodiment, the 1st stretch unit 4 can form a slit in the cut part of a raw material by rolling the connection part of a raw material. FIG. 9 shows a schematic diagram of the material M in which slits are formed by the first stretch unit 4. The first stretch unit 4 can also draw a plate-like material as in the case of the above-mentioned lansing unit 2 and can send the material to the second stretch unit 5 in the subsequent stage after rolling. is there.

  Moreover, as long as the 1st stretch unit 4 in this embodiment can form a slit in the cut part of the raw material M by rolling only the connection part of the raw material M as mentioned above, Preferably a connection part is as above-mentioned. Although not limited, a pair of rolls 411 and 421 arranged to face each other with a roll surface in which a convex portion 4112 corresponding to the position of the connecting portion of the material is formed on the flat surface 4111, and the pair of rolls 411 It is preferable to have roll rotation shafts 412 and 422 that rotatably support the rotation shafts 421 and 421 and a roll driving unit 43 that rotates the rotation shafts 412 and 422. In FIG. 10, the schematic of the cross section cut | disconnected by the surface perpendicular | vertical to the feed direction of the raw material M of the 1st stretch unit 4 by this structure is shown. FIG. 11 shows a schematic sectional view of the roll surface of the roll 411 in this case.

  Here, the roll driving unit 43 is not limited, but preferably includes a rotating motor 431 and a chain 432 that transmits the rotation of the motor 431 to the rotating shaft 422. The motor 431 is preferably an inverter motor in order to keep the rotation speed stable in the operating state. The chain 432 of the motor 431 is wound around the shaft 4311 of the motor 431 and one of the rotating shafts 422, and the rotation of the motor 431 is transmitted to the rotation of the rotating shaft 422. 421, gears 423 and 413 are fixed, and the rotation of the rotary shaft 422 can be transmitted to the other rotary shaft 412 to keep the same rotational speed.

  In addition, the first stretch unit 4 of the present embodiment includes a roll rotation axis distance adjusting unit 44 that adjusts the distance between the rotation axes 412 and 422. The roll rotation axis distance adjusting unit 44 is not limited, but includes bearings 441 and 442 that respectively hold both ends of the rotation axes 412 and 422, housings 443 and 444 that respectively hold the bearings 441 and 442, and a housing. It is preferable to have a repelling member 445 that generates a repulsive force between 443 and 444 and a tightening member 446 that tightens between the housings 443 and 444. By doing so, it becomes possible to apply a strong force to the material by shortening the distance between the housings 443 and 444, that is, the distance between the rotation axes, by tightening using the tightening member 446. By loosening the fastening member 446, the distance between the housings 443 and 444, that is, the distance between the rotating shafts can be lengthened to weaken the force applied to the material. By doing so, the amount of rolling can be adjusted, and the width of the slit can be adjusted. FIG. 12 shows a schematic view of the first stretch unit 4 when viewed from the side including the housings 443 and 444. In this case, in at least one of the housings, it is preferable that a pressure detection device such as a load cell be disposed between the housing and the bearing because fine pressure adjustment can be performed.

  The fastening member 446 is not limited, but, for example, penetrates the housing perpendicularly to the fastening direction, and penetrates the housing in parallel to the fastening direction with a shaft 4461 that rotatably connects the housing. And a screw member 4462. In this case, it can be tightened by turning the screw member. Needless to say, a configuration using only a plurality of screw members 4462 may be employed as long as the force of tightening can be balanced.

  In this embodiment, the second stretch unit 5 is the same as the first stretch unit 4 described above, and a slit is formed in the cut portion of the material M by rolling the connection portion of the material M or the adjustment of the slit width. It is something that can be done. The second stretch unit 5 can also draw the plate-like material M as in the case of the above-mentioned lansing unit 2 and can send the material to the second anvil unit 6 in the subsequent stage after flattening. Is.

  In the present embodiment, by providing two stretch units for rolling the connection portion, there is an effect that it is possible to cope with the production of a metal core in which the positions of the cut portion and the connection portion are different with respect to the extending direction of the material.

  Moreover, as long as the 2nd stretch unit 5 in this embodiment can form a slit in the cutting part of the raw material M by rolling only the connection part of the raw material M, Preferably a connection part as above-mentioned. Although not limited, like the first stretch unit 4, a pair of rolls 511 arranged to face each other, each having a roll surface on which a convex portion corresponding to the position of the connecting portion of the material is formed on the flat surface. 521, roll rotating shafts 512 and 522 that rotatably support the pair of rolls 511 and 521, and a roll driving unit 43 that rotates the rotating shafts 512 and 522.

  Here, the roll drive unit 53 is not limited, but it is preferable to have a rotating motor and a chain for transmitting the rotation of the motor to the rotating shaft, for example, as shown in the upper diagram. The motor is preferably an inverter motor in order to keep the rotational speed stable in the operating state. The chain of the motor 531 is wound around the shaft 5311 of the motor 531 and one of the rotating shafts 512, and the rotation of the motor 531 is transmitted to the rotation of the rotating shaft 512. In addition to 521, gears 523 and 513 are fixed, and the rotation of the rotation shaft 512 can be transmitted to the other rotation shaft 522 so that the same rotation speed can be maintained. In FIG. 13, the schematic of the cross section cut | disconnected by the surface perpendicular | vertical to the feed direction of the raw material M of the 2nd stretch unit 5 by this structure is shown.

  In addition, the second stretch unit 5 of the present embodiment includes a roll rotation axis distance adjustment unit 54 that adjusts the distance between the rotation axes 512 and 522. The roll rotation axis distance adjusting unit 54 is not limited, but includes bearings 541 and 542 that respectively hold both ends of the rotation shafts 512 and 522, housings 543 and 544 that respectively hold the bearings 541 and 542, and a housing It is preferable to have a repulsion member 545 that generates a repulsive force between 543 and 544 and a tightening member 546 that tightens between the housings 543 and 544. By doing so, it becomes possible to apply a strong force to the material by shortening the distance between the housings 543 and 544, that is, the distance between the rotating shafts, by tightening using the tightening member 546. By loosening the fastening member 546, the distance between the housings 543 and 544, that is, the distance between the rotating shafts can be lengthened to weaken the force applied to the material. A schematic view of the second stretch unit 5 when viewed from the side including the housings 543 and 544 is shown in FIG. In this case, in at least one of the housings, it is preferable that a pressure detection device such as a load cell be disposed between the housing and the bearing because fine pressure adjustment can be performed.

  The fastening member 546 is not limited. For example, the fastening member 546 passes through the housing perpendicularly to the fastening direction, and passes through the housing in parallel to the fastening direction with a shaft 5461 that rotatably connects the housing. And a screw member 5462. In this case, it can be tightened by turning the screw member. Needless to say, the plurality of screw members 5462 may be used as long as the tightening force can be balanced.

  Further, in the present embodiment, the second anvil unit 6 is disposed downstream of the second stretch unit 5 and can flatten the material M. More specifically, the slit width measuring unit 7 and In cooperation with the pull-in amount adjusting unit 8, the width of the slit formed by the first and second stretch units can be finally adjusted. For example, when the slit width formed by rolling by the second stretch unit is narrower than a desired width, the rotational speed of the second anvil unit 6 is increased to generate a tensile force on the material. As a result, the width of the slit can be increased and a desired slit width can be obtained.

  In addition, the second anvil unit 6 in the present embodiment is not limited as long as it can roll the connection portion and the cutting portion of the material M as described above. For example, a flat roll surface is disposed correspondingly. The pair of rolls 611 and 621, the roll rotation shafts 612 and 622 that rotatably support the pair of rolls 611 and 621, and the roll drive unit 63 that rotates the rotation shafts 612 and 622 are provided. It is preferable.

  Here, the roll driving unit 63 is not limited, but the second anvil unit with respect to the rotation speed of the roll in the second stretch unit 5 is more preferably changed by changing the rotation speed of the roll during operation. It is preferable to adjust the material feed amount by changing the ratio of the rotational speeds of the rolls 6 so that a tensile force can be applied between the second stretch unit 5 and the second anvil unit 6, It is preferable that the servo motor is used as an example of this. By changing the ratio of the rotation speed of the motor of the second stretch unit 5 and the motor of the second anvil unit 6, the amount of pull-in of the anvil unit 6 is adjusted. If it is smaller than the amount, there is an effect that only the slit width can be increased without unnecessarily deforming the shape of the material M. The chain 632 of the motor 631 is wound around the shaft 6311 of the motor 631 and one of the rotating shafts 622, and the rotation of the motor 631 is transmitted to the rotation of the rotating shaft 622. 621, gears 623 and 613 are fixed, and the rotation of the rotation shaft 622 can be transmitted to the other rotation shaft 612 so that the same number of rotations can be maintained. FIG. 15 is a schematic view of a cross section cut by a plane perpendicular to the feed direction of the material M of the second anvil unit 6 having this configuration.

  The second anvil unit 6 in this embodiment has a roll rotation axis distance adjustment unit 64 that adjusts the distance between the rotation axes 612 and 622. The roll rotation axis distance adjustment unit 64 is not limited, but includes bearings 641 and 642 that hold both ends of the rotation shafts 612 and 622, housings 643 and 644 that hold the bearings 641 and 642, and a housing, respectively. It is preferable to have a repulsion member 645 that generates a force repelling each other between 643 and 644 and a tightening member 646 that tightens between the housings 643 and 644. By doing so, it becomes possible to apply a strong force to the material by shortening the distance between the housings 643 and 644, that is, the distance between the rotation axes, by tightening using the tightening member 646. By loosening the fastening member 646, the distance between the housings 643 and 644, that is, the distance between the rotating shafts can be lengthened to weaken the force applied to the material. A schematic view of the second anvil unit 6 including the housings 643 and 644 as viewed from the side is shown in FIG. In this case, in at least one of the housings, it is preferable that a pressure detection device such as a load cell be disposed between the housing and the bearing because fine pressure adjustment can be performed.

  The tightening member 646 is not limited, but, for example, penetrates the housing perpendicular to the tightening direction, and penetrates the housing in parallel with the tightening direction with a shaft 6461 that rotatably connects the housing. And a screw member 6462. Of course, it is also possible to use only a plurality of screw members 6462 as long as the tightening force can be balanced.

  In the present embodiment, the slit width measuring unit 7 is provided in the subsequent stage of the second anvil unit 6, measures the slit width of the cut portion of the material, and outputs the slit width to the rolling amount adjusting unit 8. It can be done.

  The configuration of the slit width measuring unit 7 of the present embodiment is not limited as long as the slit width can be measured, but the light emitting unit 71 that emits light to the material M and the light reflected from the material are received. A light receiving portion 72, calculating the material feed speed based on the roll diameter and the number of rotations of the second anvil unit 6, and measuring the number of times the light receiving portion has received light in a predetermined period, It is preferable to have a slit width calculation processing unit 73 that calculates the slit width by counting the feed speed and the floor number. FIG. 17 shows a schematic diagram of a slit width measuring unit having this configuration.

  In the present embodiment, the pull-in amount adjusting unit 8 can adjust the pull-in amount of the second anvil unit 6 based on the measurement result of the slit width measuring unit 7. Specifically, the roll drive unit 63 in the second anvil unit 6 is driven, for example, the number of rotations of the motor is adjusted to adjust the number of rotations of the roll, and the final slit width is adjusted. Specifically, as described above, when the slit width formed by rolling by the second stretch unit 5 is narrower than a desired width, the rotational speed of the second anvil unit 6 is increased to generate a tensile force on the material. Let As a result, the width of the slit can be increased and a desired slit width can be obtained.

  Moreover, the metal core manufacturing apparatus 1 of this embodiment further includes a distance adjustment actuator 547 that drives the roll rotation axis distance adjustment unit 54 by the second stretch unit 6. The distance adjusting actuator 547 is connected to the slit width measuring unit 7 and can adjust the slit width formed in the material M in more detail in cooperation with the pull-in amount adjusting unit 8. For example, when the slit width measured by the slit width measuring unit 7 is wider than a desired width, the distance adjustment actuator 547 is adjusted to widen the distance between the rotating shafts to reduce the pressure applied to the material M, thereby narrowing the slit width. Conversely, when the slit width is narrower than the desired width, the rotation speed of the roll of the second anvil unit 6 can be increased, and the amount of pull-in of the anvil unit 6 can be increased to widen the slit width. . In general, since the range of adjustment of the slit width by the stretch unit is smaller than the adjustment of the slit width by the anvil unit, it is possible to adjust the slit width more accurately than the stretch unit alone can adjust. This effect is particularly noticeable by adjusting both the and anvil units.

  In the present embodiment, the first dancer unit 91 is disposed between the lancing unit 2 and the first anvil unit 3, and the speed of the plate-shaped material fed from the lancing unit 2, The speed of the plate-shaped material which the anvil unit 3 pulls in can be adjusted.

  The structure of the first dancer unit 91 is not limited, but the main roll 911, guide rolls 914 and 915 arranged so as to sandwich the main roll 911, the main roll 911, and the roll 911 can be rotated. The rotating shaft 912 that is held, the moving unit 913 that moves the main roll 911 and the rotating shaft 912 in a direction perpendicular to the direction in which the lancing unit 2 feeds out the material (hereinafter referred to as “vertical direction”), and each of the above elements It has the support | pillar 916 holding. The moving unit 913 can move up and down in the vertical direction according to the load applied to the main roll 911. As a result, when the speed of the plate-shaped material delivered from the lansing unit 2 is faster than the speed of the plate-shaped material that the first anvil unit 3 pulls in, the load applied to the main roll 911 is reduced. Can be prevented from being bent unnecessarily, while the speed of the plate-like material fed out from the lansing unit 2 is higher than the speed of the plate-like material drawn in by the first anvil unit 3. If it is too slow, the load applied to the main roll 911 increases, so that the main roll 911 descends and the rotation speed of the roll of the preceding lansing unit 2 is reduced to prevent the material roll from being cut. Can do. FIG. 18 shows a schematic diagram of the first dancer unit 91 having this configuration.

  In the present embodiment, the second dancer unit 92 is disposed between the first anvil unit 3 and the first stretch unit 4, and substantially the same as the first dancer unit 91 is used. be able to.

  Although the configuration of the second dancer unit 92 is not limited, the main roll 921, the sub-rolls 924 and 925 arranged so as to sandwich the main roll 921, the main roll 921, and the main roll 921 are rotatably held. A rotating shaft 922 that moves the main roll 921 and the rotating shaft 922 in a direction perpendicular to the direction in which the first anvil unit 3 feeds out the material (hereinafter referred to as “vertical direction”), A post 926 holding each element is provided. The moving unit 923 can move up and down in the vertical direction according to the load applied to the main roll 921. As a result, when the speed of the plate-shaped material sent out from the first anvil unit 3 is faster than the speed of the plate-shaped material pulled in by the first stretch unit 4, the load on the main roll 921 is reduced. It is possible to prevent the main roll 921 from rising and the material from being bent unnecessarily. On the other hand, the plate into which the first stretch unit 4 pulls in the speed of the plate-shaped material sent out from the first anvil unit 3. When the speed is lower than the speed of the raw material, the load applied to the main roll 921 increases, so that the main roll 921 is lowered and the first anvil unit in the previous stage is prevented from being cut by pulling the material. The rotational speed of the roll 3 can be reduced. FIG. 19 shows a schematic diagram of the second dancer unit 92 configured as described above.

  In the present embodiment, the third dancer unit 93 is disposed between the first stretch unit 4 and the second stretch unit 5, and substantially the same as the first dancer unit 91 is used. be able to.

  The configuration of the third dancer unit 93 is not limited, but the main roll 931, the sub-rolls 934 and 935 arranged so as to sandwich the main roll 931, the main roll 931, and the main roll 931 are rotatably held. A rotating shaft 932 that moves the main roll 931 and the rotating shaft 932 in a direction perpendicular to the direction in which the first stretch unit 4 feeds the material (hereinafter referred to as “vertical direction”), A post 936 is provided for holding each element. The moving unit 933 can move up and down in the vertical direction according to the load applied to the main roll 931. As a result, when the speed of the plate-like material fed out from the first stretch unit 4 is faster than the speed of the plate-like material drawn into the second stretch unit 5, the load on the main roll 931 is reduced. It is possible to prevent the main roll 931 from rising and the material from being bent unnecessarily. On the other hand, the plate into which the second stretch unit 5 draws the speed of the plate-like material sent out from the first stretch unit 4. When the speed is lower than the speed of the material, the load applied to the main roll 931 increases, so that the main roll 931 is lowered and the first stretch unit in the previous stage is prevented from being cut by pulling the material. The rotational speed of the roll 4 can be reduced. FIG. 20 shows a schematic diagram of the third dancer unit 93 configured as described above.

  As described above, according to this embodiment, it is possible to provide a metal core manufacturing apparatus that can control the slit width more accurately.

  In addition, in this embodiment, although the example which provided two stretch units is shown, depending on the case, a stretch unit can also be made into one. In this case, the second stretch unit and the third dancer unit are deleted, and the operation of the second stretch unit is combined with the first stretch unit (the second unit is read as the first unit). Yes.

  The present invention has industrial applicability as a metal core manufacturing apparatus.

DESCRIPTION OF SYMBOLS 1 ... Metal core manufacturing apparatus, 2 ... Lansing unit, 3 ... 1st anvil unit, 4 ... 1st stretch unit, 5 ... 2nd stretch unit, 6 ... 2nd anvil unit, 7 ... Slit width measurement unit, 8 ... Pull-in amount adjustment unit

Claims (2)

A lancing unit that cuts into a plate-like material and divides it into a connecting part and a cutting part;
A first anvil unit that flattens the material;
A first stretch unit for rolling the connecting portion of the material;
A second anvil unit that flattens the material;
A slit width measuring unit for measuring the slit width of the cut portion of the material;
A metal core manufacturing apparatus, comprising: a rolling amount adjusting unit that adjusts a material take-up amount of the second anvil unit based on a measurement result of the slit width measuring unit.   The metal core manufacturing apparatus of Claim 1 which has a 2nd stretch unit which rolls the said connection part of the said raw material further between said 1st stretch unit and said 2nd anvil unit.