JP7100385B2 - Manufacturing equipment for cut-off equipment and fins for heat exchangers - Google Patents

Description

The present invention relates to a cutoff device for cutting a long metal strip to a predetermined length to obtain a fin for a heat exchanger, and a device for manufacturing a fin for a heat exchanger provided with the cutoff device.

A heat exchanger such as a cooler has a heat exchanger fin having a plurality of through holes for inserting a heat exchange tube or a plurality of notches in which a flat heat exchange tube is inserted. Generally, a plurality of sheets are laminated and configured.

For example, Patent Document 1 discloses a device for manufacturing a fin for a heat exchanger in which a plurality of through holes are formed. This heat exchanger fin manufacturing device includes a mold device, and the mold device forms a plurality of cut-up slits and a plurality of through holes in a thin metal plate.

Then, on the downstream side of the mold device, a cutoff device for cutting a metal strip having a plurality of cut-up slits and a plurality of through holes formed into a predetermined length, and a cutoff device arranged on the downstream side of the cutoff device. A suction device that sucks and holds the metal strip until the cutoff device cuts, and a stack device that is arranged below the suction device are provided.
The suction device sucks and holds the transferred long metal strip, and the cutoff device cuts the metal strip to a predetermined length to form it as a fin for a heat exchanger, and then releases the suction to heat it. Drop the exchange fins and integrate the heat exchanger fins in the stacking device.

JP-A-2019-155427

Generally, in a conventional heat exchanger fin manufacturing apparatus, it is necessary to replace the mold when manufacturing heat exchanger fins having different shapes.
In such a case, it is necessary for an operator to enter the downstream side of the mold device and push the metal strip before cutting back to the mold device.
However, if the cutoff device is arranged on the downstream side of the mold device, the cutoff device may get in the way and the worker may not be able to enter, and there is a problem that the mold replacement work cannot be performed efficiently. be.

Further, the case where the worker enters the downstream side of the mold device is not limited to the time of mold replacement, and the worker may enter the downstream side of the mold device even at the time of maintenance and inspection, for example.

Therefore, the present invention has been made to solve the above problems, and an object thereof is to provide a space on the downstream side of the mold apparatus so that an operator can enter in the case of mold exchange work or the like. It is an object of the present invention to provide a cut-off device capable of the present invention and a device for manufacturing a fin for a heat exchanger provided with the cut-off device.

According to the cut-off device according to the present invention, a metal strip having a product width having a through hole into which a heat exchange tube is inserted or a notch into which a flat heat exchange tube is inserted is formed to a predetermined length. A cut-off device that cuts to manufacture fins for heat exchangers. It has an upper blade that is placed above the metal strip of product width and can move up and down, and is placed below the metal strip of product width. A lower blade and a reciprocating device that operates to move the upper blade up and down are provided, and the reciprocating device is detachably provided with respect to the upper blade and can be attached to the upper blade. When released, it is characterized in that it is provided so as to be movable from above the upper blade to a retracted position.
By adopting this configuration, for example, when replacing the mold or performing maintenance and inspection, the reciprocating device of the cutoff device can be removed from the upper blade and the reciprocating device can be moved to a position retracted from above the upper blade. As a result, the space where the reciprocating device used to exist can be provided as a space for workers and the like to enter.

Further, a gap through which a metal strip having a product width passes is formed, and a cutoff unit to which the lower blade is fixed and a cutoff unit provided above the cutoff unit, the reciprocating device is attached to the upper blade. It may be characterized by providing a fall prevention support device that supports the upper portion of the upper blade so that the upper blade does not fall when the upper blade is released.
According to this configuration, if the reciprocating device is removed from the upper blade, the upper blade may fall, but the fall prevention support device can prevent the upper blade from falling.

Further, a joint device is provided on the upper portion of the upper blade, the reciprocating device is provided with a first clamp device for clamping the joint device, and the first clamp device clamps or releases the joint device. As a result, the reciprocating device may be characterized in that it can be attached to and detached from the upper blade.
According to this configuration, during the cutoff operation by the cutoff device, the first clamp device grips the joint device and transmits the vertical drive operation of the reciprocating device to the upper blade. When moving the reciprocating device, the reciprocating device is separated from the upper blade by releasing the grip of the joint device by the first clamp device.

Further, the fall prevention support device may be characterized by being a second clamp device that clamps a joint device provided on the upper portion of the upper blade.

Further, the first clamping device is arranged so as to clamp the joint device from a width direction orthogonal to the moving direction of the reciprocating device, and the second clamping device is arranged from the moving direction of the reciprocating device. It may be characterized by being arranged so as to clamp the joint device.
According to this configuration, when the grip of the first clamp device is released, the reciprocating device can be moved without the first clamp device colliding with the joint device. Further, since the second clamp device grips the joint device in the direction orthogonal to the first clamp device, the first clamp device and the second clamp device can grip the joint device without interfering with each other.

According to the apparatus for manufacturing a fin for a heat exchanger according to the present invention, a fin for a heat exchanger is manufactured in which a through hole into which a heat exchange tube is inserted or a notch in which a flat heat exchange tube is inserted is formed. A press device, which is a manufacturing device and is provided with a mold device for forming a through hole or a notch in an unprocessed metal thin plate to form a metal strip, and a through hole or a notch are formed. The inter-row slit device for forming a metal strip having a product width by cutting a metal strip having a metal strip to a predetermined width and arranging a plurality of metal strips in the width direction, and any one of claims 1 to 5. A cut-off device, a stack device for stacking heat exchanger fins cut to a predetermined length by the cut-off device, and a metal strip having a product width downstream of the cut-off device in the transfer direction. Moreover, it is arranged above the stack device, and when it is cut to a predetermined length by the cutoff device, it attracts and holds a metal strip having a product width, and is cut to a predetermined length by the cutoff device. It is characterized by comprising a suction device for releasing the adsorption of the formed heat exchanger fins and dropping them onto the stack device.
By adopting this configuration, for example, when replacing the mold or performing maintenance and inspection, the reciprocating device of the cutoff device can be removed from the upper blade and the reciprocating device can be moved to a position retracted from above the upper blade. As a result, a worker or the like can enter the space where the reciprocating device has existed until now.

Further, the suction device is provided so as to be movable along the transfer direction of the metal strip of the product width, the reciprocating device is fixed to the suction device, and the attachment to the upper blade is released. When it is done, it may be characterized in that it can move along the transfer direction of the metal strip having the product width together with the suction device.
According to this configuration, the reciprocating device and the suction device of the cutoff device can be moved along the transfer direction of the metal strip of the product width, so that the reciprocating device of the suction device and the cutoff device exists. The space can be provided as a large space in which workers and the like can enter.

According to the present invention, there is provided a cutoff device capable of providing a space on the downstream side of the mold device so that an operator can enter, and a heat exchanger fin manufacturing device provided with the cutoff device. can do.

It is a side view which shows the schematic whole structure of the manufacturing apparatus of the fin for a heat exchanger which concerns on this invention. It is a side view of the cutoff device. It is a perspective view of the cut-off device. It is a side view which shows the place where the reciprocating device was separated from the upper blade. It is a side view of the embodiment in which a reciprocating device is fixed to a suction device. It is a perspective view of the embodiment in which a reciprocating device is fixed to a suction device. It is sectional drawing from the side surface direction of embodiment which the reciprocating device is fixed to a suction device. It is sectional drawing seen from the transfer direction explaining the moving structure of a suction device. FIG. 5 is a side view showing a state in which the reciprocating device is separated from the upper blade. FIG. 6 is a perspective view showing a state in which the reciprocating device is separated from the upper blade. FIG. 9 shows a side view showing a state in which the reciprocating device is moved together with the suction device after the reciprocating device is separated from the upper blade. FIG. 10 shows a perspective view showing a state in which the reciprocating device is moved together with the suction device after the reciprocating device is separated from the upper blade. It is a block diagram of the control system of a cutoff device.

(Overall configuration of heat exchanger fin manufacturing equipment)
FIG. 1 shows the overall configuration of the heat exchanger fin manufacturing apparatus 100 according to the present embodiment. Note that FIG. 1 shows a schematic configuration of each component of the heat exchanger fin manufacturing device 100, and the size ratio of each component is different from that of the actual device.
Further, as the fin for the heat exchanger in the present embodiment, either one having a plurality of through holes into which the heat exchange tube is inserted or one having a plurality of notches into which the flat heat exchange tube is inserted is formed. It may be a fin for a heat exchanger.

The thin plate 11 made of unprocessed metal such as aluminum is coiled around the uncoiler 10. The thin plate 11 pulled out from the anchorer 10 is inserted into the loop controller 12, and the fluttering of the thin plate 11 intermittently fed is suppressed by the loop controller 12.

An NC feeder 14 is provided on the downstream side of the loop controller 12. The NC feeder 14 is composed of two rollers that come into contact with the upper surface and the lower surface of the thin plate 11, and the two rollers are rotationally driven to sandwich the thin plate 11 with each other and intermittently feed the thin plate 11.
On the downstream side of the NC feeder 14, a press device 18 in which the die device 16 is arranged is provided. In the press device 18, the thin plate 11 is formed on the metal strip 19 having a predetermined shape by the die device 16.

The metal strip 19 formed by the die device 16 in the press device 18 is intermittently fed in the transfer direction by the feed device 20 provided on the downstream side of the press device 18. The feed timing of the feed device 20 is provided so as to operate in conjunction with the NC feeder 14, and enables stable intermittent feed.

The feed device 20 may have any configuration, but for example, a feed pin 21 capable of reciprocating in the horizontal direction is provided, and the feed pin is provided in a through hole or a notch formed in the metal strip 19. A configuration can be adopted in which the 21 enters and pulls the metal strip 19.

An inter-row slit device 22 is provided on the downstream side of the feed device 20. The inter-row slit device 22 has an inter-row slit upper blade 23 arranged on the upper surface side of the metal strip-shaped body 19, and an inter-row slit lower blade 24 arranged on the lower surface side of the metal strip-shaped body 19. The inter-row slit device 22 may be provided so as to operate by utilizing the vertical movement operation of the press device 18.
The inter-row slit upper blade 23 and the inter-row slit lower blade 24 are formed to be long along the transport direction of the metal strip 19, and the intermittently fed metal strip 19 is engaged and cut to be transported. A strip-shaped product long in the direction (hereinafter, referred to as a metal strip-shaped body 26 having a product width) is manufactured.

The plurality of product-width metal strips 26 cut to the product width by the inter-row slit device 22 are sent to the cut-off device 30.
The cutoff device 30 manufactures a heat exchanger fin 33 formed to a product length by cutting a metal strip 26 having a product width to a predetermined length.

The cutoff device 30 has an upper blade 32 arranged on the upper surface side of the metal strip 26 having a product width, and a lower blade 34 arranged on the lower surface side of the metal strip 26 having a product width.
By closing the mold of the upper blade 32 and the lower blade 34, the metal strip 26 having each product width is cut to a predetermined length along the transport direction.

The cutoff device 30 has a cutoff unit 36, and the lower blade 34 is fixed to the cutoff unit 36. The upper blade 32 is not fixed to the cutoff unit 36.
The metal strip 26 having a product width is fed between the upper blade 32 and the lower blade 34 through a gap formed in the cutoff unit 36.

The upper portion of the upper blade 32 is attached to a reciprocating device 38 arranged above the upper blade 32. The reciprocating device 38 may be any device such as an air cylinder and an electric actuator that reciprocates the rod in the vertical direction.
When the reciprocating device 38 drives the upper blade 32 to move up and down at a predetermined timing, the upper blade 32 and the lower blade 34 mesh with each other, and the metal strip 26 having the product width is cut to a predetermined length.

The reciprocating device 38 and the upper blade 32 are detachably provided. A specific attachment / detachment structure will be described later, but for example, a configuration in which a clamping device is provided on the reciprocating device 38 and a predetermined position of the upper blade 32 can be clamped can be adopted.

Further, the reciprocating device 38 is movable so that it can be retracted from above the upper blade 32 when it is separated from the upper blade 32.
As the moving direction, if it can be retracted from above the upper blade 32, it moves in any direction, such as the transfer direction of the metal strip 26 of the product width or the width direction orthogonal to the transfer direction of the metal strip 26 of the product width. You may be able to do it.
For example, a reciprocating device 38 may be attached to a slide rail 40 or the like so as to be movable in the slide direction of the slide rail 40.

On the downstream side of the cutoff device 30, a suction device 42 and a stack device 44 for laminating the manufactured heat exchanger fins 33 in the plate thickness direction (vertical direction) are provided.
The suction device 42 is arranged above the metal strip 26 of the product width, and the stack device 44 is arranged below the metal strip 26 of the product width.

The suction device 42 is provided with a suction fan (not shown) inside, and sucks air from the lower surface side by the suction fan to suck the metal strip 26 having the product width before being cut by the cutoff device 30. do.
When the metal strip 26 having the product width is cut to a predetermined length by the cutoff device 30 and formed as the fins 33 for the heat exchanger, the suction device 42 releases the suction.
When the suction by the suction device 42 is released, the heat exchanger fins 33 fall and are stacked on the stack device 44.

The stack device 44 has a plurality of stack pins 45 erected. The heat exchanger fins 33 that have fallen from the lower surface of the suction device 42 are supported by the stack pins 45 entering the through holes or notches formed in the heat exchanger fins 33.

(Embodiment of cutoff device)
Hereinafter, a specific configuration of the cutoff device of the present embodiment will be described.
FIG. 2 shows a side view of the cutoff device, and FIG. 3 shows a perspective view of the cutoff device.
The cutoff device 30 in the present embodiment includes two reciprocating devices 38 in the width direction (hereinafter, may be simply referred to as the width direction) orthogonal to the transfer direction of the metal strip 26 having the product width. However, the number of the reciprocating devices 38 is not limited to two, and one or three or more may be provided according to the width of the metal strip 26.

The cutoff device 30 is vertically connected to and separated from the cutoff unit 36 having a gap 50 through which the metal strip 26 having the product width passes, the lower blade 34 fixed to the cutoff unit 36, and the lower blade 34. It has a moving upper blade 32.

A joint device 54 projecting upward is provided on the upper surface of the upper blade 32. The joint device 54 is a member provided for connecting the reciprocating device 38 for moving the upper blade 32 up and down and the upper blade 32.

In the present embodiment, the reciprocating device 38 is composed of a servomotor 56 and a ball screw (not shown) connected to the output shaft of the servomotor 56. The axis direction of the ball screw is arranged along the vertical direction, and the table 58 can be reciprocated in the vertical direction by the rotational drive of the servomotor 56.

A first clamp device 60 is provided on the table 58 connected to the ball screw. The first clamp device is provided with two clamp arms 62 facing downward, and the two clamp arms 62 can clamp the joint device 54 provided on the upper blade 32.
When the first clamping device 60 clamps the joint device 54, the vertical driving force of the reciprocating device 38 is transmitted to the upper blade 32 via the first clamping device 60 and the joint device 54, and the upper blade 32 moves up and down. do.

When the first clamp device 60 releases the clamp of the joint device 54, the reciprocating device 38 and the upper blade 32 are separated, and the reciprocating device 38 can move from a position above the upper blade 32.

In the first clamp device 60, the two clamp arms 62 are driven so as to sandwich the joint device 54 from the width direction.
Therefore, when the first clamp device 60 releases the clamp of the joint device 54, the two clamp arms 62 are located on both sides in the width direction of the joint device 54, so that the reciprocating device 38 is a metal strip having a product width. When moving the 26 in the transfer direction, the two clamp arms 62 can move without abutting on the joint device 54.
An air cylinder, a hydraulic cylinder, or the like can be used as the mechanism by which the first clamp device 60 operates the two clamp arms 62.

A fall prevention support device is provided to support the upper blade 32 so that the upper blade 32 does not fall when the reciprocating device 38 is disengaged from the upper blade 32. In the present embodiment, as the fall prevention support device, a second clamp device 64 that clamps the joint device 54 provided on the upper portion of the upper blade 32 can be adopted.
The second clamp device 64 is provided on the upper surface of the cutoff unit 36 and includes two clamp arms 66. By clamping the joint device 54 with the two clamp arms 66, the upper blade 32 holds the joint device 54 and the second clamp device 64 even when the first clamp device 60 releases the clamp of the joint device 54. Since it is fixed to the cutoff unit 36 via the clamp, it can be prevented from falling.
Note that FIGS. 2 and 3 show a state in which the two clamp arms 66 of the second clamp device 64 do not clamp the joint device 54.

The two clamp arms 66 of the second clamp device 64 are arranged so as to clamp the joint device 54 in a direction orthogonal to the clamping direction of the two clamp arms 62 of the first clamp device 60.
In the present embodiment, since the two clamp arms 62 of the first clamp device 60 are clamped from the width direction, the two clamp arms 66 of the second clamp device 64 are clamped from the transfer direction. It has become.

The two clamp arms 66 of the second clamping device 64 are movable in the horizontal direction by a cylinder such as an air cylinder or a hydraulic cylinder, and operate so as to clamp the joint device 54 from the upstream side and the downstream side in the transfer direction. do.

Further, a first sensor 68 in which the first clamp device 60 detects the completion of clamping of the joint device 54 and a second sensor 70 in which the first clamp device 60 detects the release of the clamp of the joint device 54 are provided.
Further, a third sensor 71 (see FIG. 13) in which the second clamping device 64 detects the completion of clamping of the joint device 54, and a fourth sensor 72 (FIG. 13) in which the second clamping device 64 detects the unclamping of the joint device 54. (See) is provided in the cylinder constituting the second clamp device 64.
The first sensor 68 and the second sensor 70 according to the present embodiment employ a proximity sensor and are provided on the upper part of the first clamp device 60. However, the first sensor 68 and the second sensor 70 are not limited to the proximity sensor, and may be provided at a place other than the upper part of the first clamp device 60.

The joint device 54 of the present embodiment is provided with a disk-shaped clamped portion 73 at the upper end portion.
The two clamp arms 62 of the first clamp device 60 clamp the clamped portion 73 from the width direction.
Further, since the two clamp arms 66 of the second clamp device 64 clamp the lower portion of the clamped portion 73, the lower surface of the clamped portion 73 is placed on the two clamp arms 66. , The upper blade 32 can be supported by two clamp arms 66 so as not to fall.

FIG. 4 shows a side view of a state in which the reciprocating device is separated from the upper blade.
When the reciprocating device 38 is separated from the upper blade 32, first, the two clamp arms 66 of the second clamp device 64 are operated to clamp the joint device 54 from the upstream side and the downstream side in the transfer direction. As a result, the upper blade 32 is supported by the second clamp device 64.

Next, the first clamp device 60 is operated to release the clamps of the two clamp arms 62. As a result, the reciprocating device 38 and the upper blade 32 are separated.
Then, the reciprocating device 38 is driven to raise the first clamp device 60. As a result, the reciprocating device 38 can be moved to an arbitrary position from above the upper blade 32.

(Movement of reciprocating device)
FIG. 5 shows a side view of an embodiment in which the reciprocating device is fixed to the suction device, FIG. 6 shows a perspective view of the embodiment in which the reciprocating device is fixed to the suction device, and FIG. 7 shows a perspective view of the embodiment in which the reciprocating device is fixed to the suction device. Shows a cross-sectional view from the side surface of the embodiment fixed to the suction device, and FIG. 8 shows a cross-sectional view of the moving structure of the suction device as viewed from the transfer direction side.
Hereinafter, a configuration in which the reciprocating device 38 is fixed to the suction device 42 and the reciprocating device 38 can move to the downstream side in the moving direction together with the suction device 42 will be described.

First, the configuration of the suction device 42 will be described.
The suction device 42 includes a suction box 80 having a suction plate (not shown) on the lower surface, a damper box 82 connected to the upper part of the suction box 80 and having a damper (not shown) inside, and a damper box 82. It is provided with a fan box 84 which is connected to the upper part of the above and has a suction fan (not shown) inside.

The suction device 42 sucks the air in the suction box 80 by driving the suction fan with the damper closed, and sucks and fixes the metal strip 26 in the width direction before being cut by the cutoff device 30. ..
When it is cut by the cutoff device 30 and formed as a heat exchanger fin 33 having a predetermined length, the suction device 42 opens the damper in the damper box 82 to stop the suction of the suction box 80. Then, the sucked heat exchanger fin 33 falls to the stack device 44.

Support plates 86 that movably guide the suction device 42 are provided on both sides of the suction device 42 in the width direction.
Further, a mounting plate 85 is provided between the damper box 82 and the fan box 84 of the suction device 42. The mounting plate 85 is provided with a cam follower 90.
The support plate 86 is provided with a guide portion 87 with which the cam follower 90 provided on the mounting plate 85 of the suction device 42 abuts. The guide portion 87 extends in the transfer direction, and the cam follower 90 rolls on the upper surface of the guide portion 87 so that the suction device 42 can move along the transfer direction.
Further, the support plate 86 is formed with a groove 88 extending along the moving direction. In this groove 88, a fixing member 91 such as a clamper provided on the mounting plate 85 of the suction device 42 is arranged so as to be able to move in the groove 88. When the suction device 42 moves, the suction device 42 can be fixed at that location by the fixing member 91.

A mounting portion 94 extending in the vertical direction is provided on the downstream side of the reciprocating device 38 of the cutoff device 30 in the transfer direction, and a horizontal mounting portion 95 extending in the horizontal direction is provided at the upper end portion of the mounting portion 94.
The horizontal mounting portion 95 is fixed to the mounting plate 85 of the suction device 42.
Therefore, the reciprocating device 38 is integrated with the suction device 42 and can move together with the suction device 42.

FIG. 9 shows a side view of the reciprocating device separated from the upper blade, and FIG. 10 shows a perspective view of the reciprocating device separated from the upper blade.
Further, FIG. 11 shows a side view of a state in which the reciprocating device is moved together with the suction device after the reciprocating device is separated from the upper blade, and FIG. 12 shows a reciprocating movement together with the suction device after the reciprocating device is separated from the upper blade. The perspective view of the state where the apparatus was moved is shown.
Further, FIG. 13 shows a block diagram of the control system of the cutoff device.

First, the control system of the cutoff device 30 will be described. The operation of the cutoff device 30 is controlled by the control unit 74. The control unit 74 includes a central processing unit such as a CPU, a memory, and the like, and has a function of outputting a control signal based on a preset program and a signal input from a sensor or the like.

The control unit 74 includes an operation unit 76 operated by an operator, a first sensor 68, a second sensor 70, a third sensor 71, a fourth sensor 72, a first clamp device 60, a second clamp device 64, and a reciprocating device 38. Is connected to.
The control unit 74 reciprocates the first clamp device 60, the second clamp device 64, based on the signals input from the operation unit 76, the first sensor 68, the second sensor 70, the third sensor 71, and the fourth sensor 72. It controls the operation of the moving device 38.

Subsequently, the operation of separating the reciprocating device from the upper blade and moving it will be described.
When the reciprocating device 38 is separated from the upper blade 32 and retracted from above the upper blade 32, the operator first operates the operation unit 76 to stop the vertical movement operation of the reciprocating device 38.
Next, the operator operates the operation unit 76 to instruct the reciprocating device 38 to be separated from the upper blade 32.

When the control unit 74 receives an instruction from the operation unit 76 to disconnect the reciprocating device 38 from the upper blade 32, the control unit 74 first outputs a control signal to the second clamp device 64 and operates the second clamp device 64 to operate the two clamps. The arm 66 clamps the joint device 54 from the upstream side and the downstream side in the transfer direction.

When the control unit 74 confirms that the two clamp arms 66 have clamped the joint device 54 by the signal from the third sensor 71, the control unit 74 outputs a control signal to the first clamp device 60 to operate the first clamp device 60. Then, the clamps of the two clamp arms 62 are released.

When the control unit 74 confirms the release of the clamps of the two clamp arms 62 by the signal from the second sensor 70, the control unit 74 outputs a control signal to the reciprocating device 38 to drive the reciprocating device 38 to drive the first clamp device 60. To raise.
As a result, the reciprocating device 38 is completely separated from the upper blade 32.

Then, by moving the suction device 42 along the guide portion 87 of the support plate 86, the reciprocating device 38 fixed to the suction device 42 can be moved from above the upper blade 32.
In the present embodiment, the suction device 42 is manually moved by an operator.

In the present embodiment, the guide portion 87 of the support plate 86 is formed along the transfer direction, and the suction device 42 and the reciprocating device 38 can move to the downstream side in the transfer direction.
Therefore, as shown in FIGS. 11 and 12, a space is created on the downstream side of the cutoff device 30, and the space in which the reciprocating device 38 has existed can be provided as a space for an operator or the like to enter.

In the present embodiment, the suction device 42 and the reciprocating device 38 are manually moved. However, the movement of the suction device 42 and the reciprocating device 38 may be automatically performed by using a motor or the like.

10 Uncoiler 11 Metal thin plate 12 Loop controller 14 NC feeder 16 Mold device 18 Press device 19 Metal strip 20 Feeding device 21 Feed pin 22 Row-to-row slit device 23 Row-to-row slit Upper blade 24 Row-to-row slit Lower blade 26 Product width Metal strip 30 Cut-off device 32 Upper blade 33 Heat exchanger fin 34 Lower blade 36 Cut-off unit 38 Reciprocating device 40 Slide rail 42 Suction device 44 Stack device 45 Stack pin 50 Gap 54 Joint device 56 Servo motor 58 Table 60 1st clamp device 62 Clamp arm 64 2nd clamp device 66 Clamp arm 68 1st sensor 70 2nd sensor 71 3rd sensor 72 4th sensor 73 Clamped part 74 Control part 76 Operation part 80 Suction box 82 Damper box 84 Fan box 85 Mounting plate 86 Support plate 87 Guide part 88 Groove 90 Cam follower 91 Fixing member 94 Mounting part 95 Horizontal mounting part 100 Heat exchanger fin manufacturing equipment

Claims (7)

A cut for manufacturing heat exchanger fins by cutting a metal strip having a product width into which a through hole into which a heat exchange tube is inserted or a notch in which a heat exchange flat tube is inserted is formed. It ’s an off device,
An upper blade that is placed above the metal strip of the product width and can move up and down,
The lower blade placed below the metal strip of product width,
A reciprocating device that operates to move the upper blade up and down is provided.
The reciprocating device is detachably provided with respect to the upper blade, and is provided so as to be movable from above the upper blade to a retracted position when the attachment to the upper blade is released. Cut-off device. A cut-off unit in which a gap through which a metal strip of product width passes is formed and the lower blade is fixed,
A fall prevention support device provided on the upper part of the cutoff unit and supporting the upper part of the upper blade so that the upper blade does not fall when the reciprocating device is released from the upper blade. The cutoff device according to claim 1, wherein the cutoff device is provided. A joint device is provided on the upper part of the upper blade.
The reciprocating device is provided with a first clamping device that clamps the joint device.
The cutoff device according to claim 1 or 2, wherein the reciprocating device can be attached to and detached from the upper blade by clamping or releasing the joint device by the first clamp device. The cutoff device according to claim 2, wherein the fall prevention support device is a second clamp device that clamps a joint device provided on the upper portion of the upper blade. The first clamping device is arranged so as to clamp the joint device from a width direction orthogonal to the moving direction of the reciprocating device.
The cutoff device according to claim 4, wherein the second clamp device is arranged so as to clamp the joint device from the moving direction of the reciprocating device. A manufacturing device for manufacturing heat exchanger fins in which a through hole into which a heat exchange tube is inserted or a notch in which a heat exchange flat tube is inserted is formed.
A press device provided with a die device that forms a through hole or a notch in an unprocessed metal thin plate to form a metal strip.
An inter-row slit device for cutting a metal strip having a through hole or a notch formed into a predetermined width and arranging a plurality of metal strips in the width direction to form a metal strip having a product width.
The cutoff device according to any one of claims 1 to 5.
A stacking device for stacking heat exchanger fins cut to a predetermined length by the cutoff device, and a stacking device.
The metal strip having a product width is located downstream of the cutoff device in the transfer direction and above the stacking device, and is cut to a predetermined length by the cutoff device. It is characterized by comprising a suction device that sucks and holds the heat exchanger, releases the heat exchanger fins formed by being cut to a predetermined length by the cutoff device, and drops the heat exchanger fins onto the stack device. Fin manufacturing equipment for heat exchangers. The suction device is provided so as to be movable along the transfer direction of the metal strip of the product width.
The reciprocating device is fixed to the suction device, and when the attachment to the upper blade is released, the reciprocating device can move together with the suction device along the transfer direction of the metal strip having a product width. 6. The apparatus for manufacturing fins for a heat exchanger according to claim 6.

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