KR20090100227A - Tension device and heat exchange fin manufacturing machine - Google Patents

Abstract

PURPOSE: A tension applying device and a heat exchange fin manufacturing device are provided to adjust holding time and releasing time of a metal band shape body according to the rotation number of a press apparatus by installing a holding unit applying tension on the metal band shape body separately with a press unit. CONSTITUTION: A tension applying device and a heat exchange fin manufacturing device comprises a reciprocating body and a feeding pin. The reciprocating body reciprocates in the longitudinal direction of a metal band shape body(10). The tip end of the feeding pin is pressed in the direction of the metal band shape body by a pressing member installed at the reciprocating body. When the reciprocating body moves in the transfer direction of the metal band shape body, the tip end of the feeding pin is inserted into the hole which a collar formed at the metal band shape body hangs on and is coupled with the inner edge of a hole. The tip end of the feeding pin comprises an incline. A holding unit(60) is held with being contacted with the metal band shape body to apply tension on the metal band shape body. A holding member(76) is installed to release the holding when the movement of the metal band shape body in the feeding direction is started.

Description

Tension applying device and manufacturing device for heat exchanger fins {TENSION DEVICE AND HEAT EXCHANGE FIN MANUFACTURING MACHINE}

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a tension applying device and a manufacturing device for a heat exchanger fin, and more particularly, a transfer device for intermittently transferring the metal strip to a press device for forming a through hole with a collar on the metal strip. Tension applying device which consists of a holding device which gives a predetermined tension to the said metal strip | belt-shaped object, when the conveyance of a metal strip | belt-shaped object by the said conveying device to a press apparatus stops, and the said conveying device stops; The manufacturing apparatus of the fin for heat exchangers provided with the said tension provision apparatus.

Heat exchanger fins for use in heat exchangers such as coolers are manufactured by the heat exchanger fin manufacturing apparatus shown in FIG. 6. The metal strip 10 which consists of metals, such as aluminum which are the to-be-processed material of the fin for heat exchangers, is taken out from the coil 12. As shown in FIG. The withdrawn metal strip 10 is inserted into the oil provision apparatus 16, and a process oil adheres to the surface, and is supplied to the metal mold | die apparatus 20 provided in the press apparatus 18. As shown in FIG.

In the metal strip 10 which passed through the metal mold | die apparatus 20, the perforated with the several collar in which the collar of predetermined height was formed around the perforated hole formed in the predetermined direction at predetermined intervals is formed.

The metal strip 10 is transported a predetermined distance in a predetermined direction, cut into a predetermined length by the cutting blade 26, and then accommodated in the stacker device 28.

In the press apparatus 18 shown in this FIG. 6, as described in following patent document 1, the metal strip | belt-shaped body 10 by which the several hole with a collar was formed in the predetermined direction at predetermined intervals was cut out of the cutting edge 26. As shown in FIG. The hitch feeder 29 as a conveying apparatus which feeds intermittently in the direction is provided.

The drive means shown in FIG. 7 is used for this hitch feeder 29. The drive means connects the connecting rod 32 to the eccentric pin of the crank 30 which rotates synchronously with the press device 18, and swings around the pin 34 to form a first link 36. ) And a second link 42 connected to the lever 40 pivoting around the point shaft 38 to a pin 44 at the lower end of the connecting rod 32. The first link 36 is provided with a cylinder device 37 for adjusting the swing angle thereof. According to the driving means shown in FIG. 7, the connecting rod 32 reciprocates the lever 40 via the first link 36 and the second link 42 by the rotation of the crank 30.

As shown in FIG. 8, the link 46 is connected to the upper end of the lever 40, and the reciprocating member 50 can be reciprocated along the guide 48.

As shown in Fig. 9 (a), the slit 50 of the reference plate having a tip end of which is formed as an inclined surface has its front end disposed above the reciprocating body 50, as shown in Fig. 9 (a). It is pressurized by the spring 56 so that it may pass through 54 and protrude from the upper surface of the reference plate.

As shown in Fig. 9 (a), the distal end portion of the transfer pin 52 protruding from the upper surface of the reference plate has a collared through hole 11 of the metal strip 10 mounted on the mounting surface of the reference plate. ) Is inserted into the. For this reason, the metal strip 10 can also be moved to arrow A direction by moving the reciprocating body 50 to arrow A direction shown to Fig.9 (a).

On the other hand, when the reciprocating member 50 moves in the arrow B direction opposite to the arrow A direction as shown in Fig. 9 (b), the inclined surface of the tip surface of the feed pin 52 (pin) has a collar. Sliding contact with the periphery of the perforated hole 11 is moved in the direction of the arrow B, a force that resists the pressing force of the spring 56 acts on the transfer pin 52 (pin), the transfer pin 52 (pin) It is gradually pushed into the reciprocating body 50. For this reason, when the reciprocating body 50 moves in the arrow B direction, the conveyance of the metal strip 10 can be stopped, and the metal strip 10 can be intermittently conveyed in the arrow A direction.

[Patent Document 1]: Japanese Patent Laid-Open No. 2006-21876

According to the conveying apparatus of the metal strip | belt-shaped body shown in FIG. 9, the reciprocating body 50 can move in synchronism with the press apparatus 18, and the metal strip | belt-shaped body 10 according to the increase and decrease of the rotational speed of the press apparatus 18 is shown. The feed speed of can be easily changed.

However, when the rotation speed of the press apparatus 18 is made high speed, in the conveyance apparatus of the metal strip | belt-shaped body shown in FIG. 9, when the movement to the conveyance direction of the metal strip 10 of the reciprocating body 50 stops, The metal strip | belt-shaped body 10 may generate | occur | produce excessive conveyance to a conveyance direction beyond the front-end | tip part formed by the inclined surface of the conveyance pin 52 (pin).

As described above, when excessive conveyance occurs in the metal strip 10, press work is performed at a location different from a predetermined location, which causes a bundle of defective products.

Therefore, this invention can solve the problem of the conventional apparatus for manufacturing fins for heat exchangers in which excessive transfer of the metal strip may occur when the movement in the conveying direction of the reciprocating body of the metal strip transfer apparatus is stopped. It is an object of the present invention to provide a tension providing device capable of imparting a predetermined tension to a metal strip when the movement of the reciprocating body of the metal strip transfer device in the transfer direction is stopped, and a device for manufacturing fins for heat exchangers. do.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, in order to solve the said subject, the metal strip | belt-shaped object is provided when the holding means which grips the metal strip | belt-shaped body 10 in the metal mold | die device 20 of the press apparatus 18, and the reciprocating body 50 stops. Tried to give predetermined tension to (10).

However, when the reciprocating member 50 is stopped, in order to give a predetermined tension to the metal strip 10, it is necessary for the reciprocating body 50 to hold the metal strip 10 before the complete stop point. On the other hand, when the metal strip 10 is gripped before the reciprocating body 50 is completely stopped, the mold apparatus 20 which is synchronized with the rotational speed of the press device 18 releases the grip of the metal strip 10. The timing is later than the start of the movement of the reciprocating member 50 in the feed direction. For this reason, an excessive force acts on the collared perforation of the metal strip 10 in which the feed pin 52 (pin) was inserted, and there exists a possibility that a collared perforation may be deformed. Therefore, it turned out that skill is required for adjustment of the holding time and release time of the metal strip 10.

Moreover, since the excess feed amount of the metal strip 10 differs according to the rotation speed of the press apparatus 18, when the rotation speed of the press apparatus 18 is changed, the holding of the adjusted metal strip 10 is carried out. It also proved necessary to reschedule and release.

For this reason, the present inventors have further examined the tension provision apparatus which can adjust the holding | gripping time and release time of a metal strip easily, even if the rotational speed of a press apparatus changes, and can give a predetermined tension to a metal strip. Over and over.

As a result, when the transfer of the metal strip-shaped body by the transfer device to the press device stops, a holding device for holding the metal strip-shaped body and giving a predetermined tension is provided separately from the press device, and the metal strip-shaped body is held. It was proved to be effective to adjust the holding time and the release time of the gripping according to the rotation speed of the press apparatus, and the present invention was reached.

That is, according to the present invention, the transfer device for intermittently transferring the metal strip body to the press device for forming a collared through hole in the metal strip body, and the transfer of the metal strip shape body by the transfer device to the press device can be stopped. A tension imparting device comprising a gripping device for imparting a predetermined tension to the metal strip-shaped member between the conveying device, wherein the conveying device reciprocates in the longitudinal direction of the metal band-shaped body, and the reciprocating member. A perforated collar formed in the metal strip when the reciprocating body moves in the direction of transfer of the metal strip when the tip is pressed in the direction of the metal strip by a pressure member provided in the body. The tip end portion of the feed pin inserted therein stops the conveyance of the metal belt-shaped member, and the reciprocating member is a metal belt-shaped member. The inclined surface of the tip of the pin in sliding contact with the inner circumference of the collared perforation so as to escape from the collared perforation in response to the pressing force of the pressing member when moving in the direction opposite to the conveying direction of the sieve. And the gripping apparatus is brought into contact with the metal belt-like member so that a predetermined tension is applied to the metal belt-shaped member when the movement in the conveying direction of the reciprocating member of the conveying apparatus is stopped. The holding device which releases the said holding | gripping when a reciprocating body starts moving to the conveyance direction of a metal strip is a tension provision apparatus characterized by the above-mentioned.

The present invention also provides a press device for forming a plurality of collar holes in the metal strip and cutting the metal strip to a predetermined length to produce fins for heat exchanger, and suction for discharging the fins for heat exchanger to the stacking device. It is also a manufacturing apparatus of the heat exchanger fin provided as a manufacturing apparatus of the heat exchanger fin provided with the apparatus, The tension provision apparatus mentioned above is used.

In the present invention, as a holding device, a cam member for holding and holding the gripping member abutting on a metal strip and releasing the gripping, and driving means for driving the cam member in synchronism with the rotation of the press apparatus, are provided. By using the holding device, the holding time and release time for the metal strip can be easily adjusted by changing the shape of the cam member.

In addition, by using a reciprocating body reciprocating in synchronization with the rotation of the press device as a reciprocating body and using a servomotor as a driving means provided in the holding device, it is possible to easily cope with the high speed of the press device.

Moreover, by providing a conveying apparatus at the exit side of a press apparatus and providing a holding apparatus at the inlet side of the said press apparatus, predetermined tension can be easily given to a metal strip | belt-shaped object.

In addition, by providing a fibrous material on the contact surface of the gripping member with the metal strip, it is possible to prevent damage to the surface of the metal strip which is in contact with the holding member.

According to the tension applying device according to the present invention, when the transfer of the metal strip-shaped body by the transfer device to the press device is stopped, a holding device is provided separately from the press device by holding the metal strip-shaped body to impart a predetermined tension. Can be easily adjusted to an optimum value according to the rotation speed of the press apparatus.

As a result, it is possible to prevent the deformation of the collared perforation caused by the release timing for releasing the grip of the metal strip being later than the start timing of movement in the conveying direction of the reciprocating member of the transfer apparatus.

Moreover, even when the rotation speed of a press apparatus is changed, the holding time and release time of a metal strip can be adjusted easily, and it can respond easily to the change of the processing speed of press work.

An example of the manufacturing apparatus of the fin for heat exchangers which concerns on this invention is shown in FIG. In the apparatus for manufacturing heat exchanger fins shown in FIG. 1, the metal strip 10 drawn out from the coil 12 wound around the metal strip is supplied to the press device 18 with a tension or the like adjusted. In the press device 18, a plurality of collar-like perforations are formed in the supplied metal strip 10 by a pair of molds, and then cut into a predetermined width by a cutting blade 26 provided in the press device 18. The pin formation part which consists of a some elongate member is formed. These fin-forming portions sequentially enter the suction device 14, and when the fin-forming portions of the predetermined length enter, they are cut into fins for heat exchangers of the predetermined length by the cutting blades provided in the press apparatus 18. The obtained heat exchanger fin is attracted to the suction device 14 and fed out to the stacker device 28.

On the outlet side of the press apparatus 18 shown in FIG. 1, the hitch feeder 29 as a transfer apparatus shown in FIGS. 7-9 is provided. Since the hitch feeder 29 has already been described, the detailed description thereof will be omitted.

Moreover, on the inlet side of the press apparatus 18, when a movement to the conveyance direction of the reciprocating body 50 (FIG. 9) of the hitch feeder 29 stops, a predetermined tension is given to the metal strip 10. A gripping apparatus 60 for holding the metal strip 10 is provided.

As shown in Fig. 2 (a) and (b), the gripping apparatus 60 includes a cam member 68 on the side plates 64 and 64 mounted on the base 62 on which the metal strip 10 travels on the upper surface. , 68 and 68 are mounted, and the rotating shaft 66 in which the servomotor 72 as a drive means is attached to one end, and the fixing members 70 and 70 hang. This servomotor 72 is synchronized with the rotation of the press apparatus 18.

Each of the cam members 68, 68, 68 is a standing member provided perpendicular to the holding member 76 provided to be foldable with respect to the upper surface on which the metal strip 10 of the base 62 travels. Abutting with the wheel-shaped member 82 rotatably attached to the shaft 80 spanned between the 78 and 78, the rest.

A gripping material 74 made of a fibrous material such as felt is provided on the contact surface of the gripping member 76 that abuts against the metal strip 10. Thus, by providing the holding material 74 which consists of fibrous materials, such as a felt, on the contact surface of the holding member 76, the metal strip 10 can be hold | maintained sufficiently and the metal strip 10 is carried out. It can prevent the surface damage.

The holding member 76 is pressurized to press the holding member 76 in the upper surface direction of the base 62 between the holding members 70 and 70 and the holding member 76, as shown in FIG. Springs 84 and 84 as members are provided.

In the gripping apparatus 60, the rotating shaft 66 is rotated by the servomotor 72 synchronized with the rotation of the press apparatus 18, and as shown in FIG. 3 (a), the rotating shaft 66 is mounted. When the cam member 68 reaches the position where the wheel-shaped member 82 is pushed up, the holding member 76 connected to the wheel-shaped member 82 is raised to resist the pressing force of the springs 84 and 84, and The holding state of the metal strip 10 held by the gripping material 74 and the surface of the base 62 is released.

In addition, the cam member 68 is pushed down from the state which pushed up the wheel-shaped member 82 shown to Fig.3 (a), as shown to Fig.3 (b). In this state, the holding member 76 connected to the wheel-shaped member 82 is lowered by the pressing force of the springs 84 and 84, and the metal strip-shaped body is held between the holding material 74 and the surface of the base 62. FIG. Grip (10).

The holding timing and release timing of the metal strip 10 can be adjusted according to the shape of the cam members 68, 68, 68.

In the press apparatus 18 shown in FIG. 1, a predetermined tension is applied to the metal strip 10 between the hitch feeder 29 provided on the outlet side and the gripping apparatus 60 shown in FIGS. 2 and 3. Can be.

The state in the press apparatus 18 which shows the state of provision of such tension is shown to FIG. 4 (a). In the press apparatus 18, as shown in FIG.4 (a), the timing (crank angle) of the crankshaft of the press apparatus 18 is 90 degrees-270 degrees when the press work to the metal strip 10 is carried out. It is time. At this time, the metal strip 10 is stopped.

Since the transfer of the metal strip 10 in this press apparatus 18 is performed by the hitch feeder 29 which synchronizes with rotation of the press apparatus 18, as mentioned above, the metal strip 10 ( 10) The crank angle starts at 270 ° and stops at 90 °.

In order to give a predetermined tension to the metal strip 10 at the time when the transfer stops of the metal strip 10, the tension is such that the load is not applied to the metal strip 10 before the transfer stop timing. It is preferable to give. For this reason, in FIG.4 (a), after the transfer of the metal strip 10 to the shape of the cam member 68, the holding material 74 contacts the metal strip 10 at the crank angle 330 degrees. At the start and the transfer stop timing of the metal strip 10, as illustrated in FIG. 3B, the metal strip 10 is reliably gripped between the surface of the gripping material 74 and the base 62. I do it.

In addition, when the cam member 68 rotates and the crank angle is 130 degrees in FIG. 4 (a), as shown in FIG. 3 (a), the metal strip-shaped body mounted on the holding material 74 and the base 62 is shown. A gap is formed between the (10).

As shown in FIG. 4 (b), the gripping material 74 is mounted on the gripping material 74 and the base 62 at a crank angle of 300 ° to start the contact with the metal strip 10. The timing at which the gap is formed between the metal strips 10 thus formed may be set at a crank angle of 100 degrees.

By the way, when the gripping material which contacts with the metal strip | belt-shaped object 10 and is hold | maintained in the metal mold | die of the press apparatus 18 is provided, the holding time and release timing of the metal strip | belt-shaped body 10 by a holding material are pressed. Cannot be adjusted independently of the rotation. In addition, in the press apparatus 18, since the rise and fall of a metal mold | die are the same, as shown in FIG.4 (c), when the gripping release timing of the metal strip 10 is made into the crank angle of 100 degrees, the metal strip shape ( 10) and the holding start time which the holding material abuts are the crank angle 260 degrees which is a symmetrical position.

The contact between the metal strip 10 and the gripping material before the start of transfer of the metal strip 10 in such a case may cause an excessive load on the hitch feeder 29 which is the transfer device of the metal strip 10. . In addition, in the hitch feeder 29, since the distal end of the feed pin 52 is inserted into the collared hole 11, the collared hole 11 is deformed by the feed pin 52. There is also concern.

In this regard, according to the gripping apparatus 60 shown in FIGS. 2 and 3, as shown in FIGS. 4A and 4B, the metal strip 10 after the start of transfer of the metal strip 10. Since the contact between the gripping material and the gripping material can be started, an excessive load is applied to the hitch feeder 29 to prevent the collared perforation 11 from being deformed.

In addition, at the time of conveyance stop of the metal strip 10, the metal strip 10 is reliably gripped by the holding device 60, and a predetermined tension is applied between the hitch feeder 29 and the metal strip 10. Can be given to As a result, when the conveyance of the metal strip 10 stops, generation | occurrence | production of the excessive conveyance of the metal strip 10 can be prevented, and the generation of the defective goods by the excessive conveyance of the metal strip 10 is produced. Can be prevented.

In the gripping apparatus 60 shown in FIG. 2 and FIG. 3, the gripping material 74 was pressed against the metal strip 10 on the base 62 by the springs 84 and 84, but FIG. The gripping apparatus 60 shown in (b) can be used.

In the gripping apparatus 60 shown in FIG.5 (a), (b), the holding material 74 with respect to the metal strip | belt-shaped object 10 mounted in the upper surface of the base 62 pressed by the springs 86 and 86. FIG. The holding member 76 attached to the bottom surface is provided so that folding is possible. The eccentric cam 88 is provided between the standing members 78 and 78 provided perpendicular to this holding member. The eccentric cam 88 is rotated by the servomotor 72 to release the grip of the metal strip 10 (Fig. 5 (a)) and the grip of the metal strip 10 (Fig. 5). (b)].

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram explaining an example of the manufacturing apparatus of the fin for heat exchangers which concerns on this invention.

FIG. 2 is a partial cross-sectional front view and a partial cross-sectional side view illustrating an example of a holding device provided on the inlet side of the press device 18 shown in FIG. 1.

3 is an explanatory diagram for explaining the operation of the gripping apparatus shown in FIG. 2.

It is explanatory drawing explaining the relationship between the operation | movement of the holding device shown in FIG. 2, and the operation | movement of a press apparatus.

5 is an explanatory diagram for explaining another example of the gripping apparatus that can be used in the present invention.

It is a schematic diagram explaining the conventional manufacturing apparatus of the fin for heat exchangers.

FIG. 7 is a schematic view for explaining driving means of the transfer apparatus used in the press apparatus shown in FIG. 6.

FIG. 8 is a schematic diagram illustrating a reciprocating body driven by the driving means shown in FIG. 7.

It is explanatory drawing explaining the outline of the conveying apparatus used for the press apparatus shown in FIG.

<Code description>

10 Metal Band 11 Perforation

12 coil 14 suction device

16 oil imparting device 18 press device

20 mold device 26 cutting blade

28 Stacker 29 Hitch Feeder

50 Reciprocating Body 52 Feed Pin

54 Slits 56, 84, 86 Spring

60 Gripping Device 62 Expectation

64 shroud 66 axis of rotation

68 Cam member 70 Fixed member

72 servomotor 74 fibrous material

76 Gripping member 78 Standing member

80 axis 82 wheel-shaped member

88 eccentric cam

Claims (6)

The transfer device for intermittently transferring the metal strip to a press device for forming a collared through hole in the metal strip, and the transfer device when the transfer of the metal strip to the press device by the transfer device stops. A tension imparting device comprising a gripping device for imparting a predetermined tension to the metal strip body between The conveying apparatus is composed of a reciprocating body reciprocating in the longitudinal direction of the metal strip, and a feed pin in which the tip is pressed in the direction of the metal strip by a pressing member provided in the reciprocating body, When the reciprocating member moves in the conveying direction of the metal strip, the leading end of the feed pin is inserted into the collared hole formed in the metal strip to engage the inner edge of the collared hole, and the reciprocating member When the stop and move in the opposite direction to the conveying direction of the metal strip, the distal end portion of the conveying pin is provided with an inclined surface so as to disengage from the distal end of the conveying pin to escape from the collared through hole, When the conveying device is stopped, the gripping apparatus is held in contact with the metal strip-shaped body so that a predetermined tension is applied to the metal strip-shaped body, and the reciprocating member is moved in the conveying direction of the metal strip-shaped body. When it starts, the tension provision apparatus characterized by the holding | gripping tool which releases the said holding | gripping. 2. The gripping apparatus according to claim 1, wherein the gripping apparatus includes a cam member for holding and holding the gripping member in contact with the metal strip, and separating the gripping member from the metal strip to release the gripping. A tension imparting device is provided, which drive means for driving is provided. The tension applying device according to claim 2, wherein the reciprocating body reciprocates in synchronization with the operation of the press device, and the driving means provided in the holding device is a servo motor. The tension applying device according to claim 1, wherein the transfer device is provided on an outlet side of the press device, and a grip device is provided on an inlet side of the press device. The tension applying device according to claim 1, wherein a fibrous material is provided on an abutting surface of the gripping member with the metal strip. A press device for forming a plurality of collared perforations in the metal strip and cutting the metal strip into a predetermined length to produce fins for heat exchangers, a transfer device for intermittently transferring the metal strip to the press device; A tension applying device comprising a gripping device for imparting a predetermined tension to the metal strip when the transfer of the metal strip to the press device is stopped by the transfer device, and for the heat exchanger. It is provided with the suction apparatus which discharges a pin to a stack apparatus, The conveying apparatus is composed of a reciprocating body reciprocating in the longitudinal direction of the metal strip, and a feed pin in which the tip is pressed in the direction of the metal strip by a pressing member provided in the reciprocating body, When the reciprocating member moves in the conveying direction of the metal strip, the leading end of the feed pin is inserted into the collared hole formed in the metal strip to engage the inner edge of the collared hole, and the reciprocating member When the stop and move in the opposite direction to the conveying direction of the metal strip, the distal end of the conveying pin has an inclined surface so as to disengage from the distal end of the conveying pin to escape from the collared through hole, When the conveying device is stopped, the gripping apparatus is held in contact with the metal strip-shaped body so that a predetermined tension is applied to the metal strip-shaped body, and the reciprocating member is moved in the conveying direction of the metal strip-shaped body. At the start, a holding member for releasing the holding is provided.

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