JP2014200795A - Fin height correction apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make correction gap adjustment easy, and realize operator burden reduction and productivity improvement in a fin height correction apparatus for correcting fin height of corrugated fins.SOLUTION: A fin height correction apparatus 100 comprises: a pair of correction members 1, 2 which are arranged with a spacing so as to form a correction gap 15 between, contact to fins of corrugated fins 12 passing through the correction gap 15 to correct fin height; a gap-adjusting servo motor 3 for adjusting the size of the correction gap 15; a gap-maintaining brake 4 which maintains the size of the correction gap 15 by applying a brake to the gap-adjusting servo motor 3; and a controller 11 which adjusts the correction gap 15 by the gap-adjusting servo motor 3 and, after the adjustment, applies a brake to the gap-adjusting servo motor 3 by the gap-maintaining brake 4 and stops electrification to the gap-adjusting servo motor 3.

Description

  The present invention relates to the manufacture of corrugated fins used in heat exchangers, and more particularly to a technique for correcting (restoring) the fin height of corrugated fins to a desired dimension.

  In heat exchangers used for automobile radiators, heater cores, and the like, heat dissipation of the heat exchanger is improved by arranging corrugated fins between tubes through which a heat medium flows.

  For manufacturing the corrugated fins, a forming device for forming the long member into a corrugated shape, a feeding device for feeding the formed corrugated fins downstream, and a fin height correcting device for correcting the fin height of the corrugated fins are used.

  In Patent Literature 1, a long member is formed into a corrugated fin with a louver by passing a long member between a pair of corrugated cutters, and is passed between a pair of feed rolls having teeth corresponding to the fin shape on the outer periphery. The corrugated fins are sent downstream.

  Then, the corrugated fins are separated from the pair of feeding rolls by a pair of correction members (splashing members) arranged close to the engagement portion outlet side of the pair of feeding rolls, and further formed between the pair of correction members. The height of the corrugated fin is corrected (restricted) by passing the corrugated fin through the clearance gap.

JP 2001-212737 A

  In order to properly correct the fin height, it is necessary to adjust the wrist-like gap. Conventionally, the shim is configured to be sandwiched between a pair of correction member members, and the shim is exchanged. The wrist-like gap was adjusted.

  However, in such an adjustment method, since adjustment takes time, when manufacturing corrugated fins having different fin heights with a single device, the burden on the operator is large, and productivity is reduced. It was.

  The present invention has been made in view of such technical problems. In the fin height correction device for correcting the fin height of the corrugated fin, the adjustment of the wrist-like gap is facilitated, and the burden on the worker is reduced and the production is performed. The purpose is to improve the performance.

  According to an aspect of the present invention, there is provided a fin height correction device for correcting the fin height of a corrugated fin for a heat exchanger, the device being arranged at an interval so as to form a wrist-like gap therebetween, A pair of correction members that correct the fin height by contacting the fins of the corrugated fins passing through the wrist-like gap, a gap adjusting servo motor that adjusts the size of the wrist-like gap, and the gap adjusting servo A brake is applied to the motor to maintain the size of the wrist-like clearance, and the wrist-like clearance is adjusted by the servo motor for adjusting the clearance, and after the adjustment, the clearance adjustment is performed by the clearance-holding brake. And a controller that applies a brake to the servomotor for stopping the power supply to the servomotor for adjusting the gap. Fin height correction device characterized the door is provided.

  According to the above aspect, the adjustment of the wrist-like gap is performed by the gap adjustment servo motor, so that it is easier as compared with the conventional adjustment method in which the shim is replaced. As a result, the burden on the operator can be reduced and adjustment can be made in a short time, so that the production efficiency can be improved.

1 is an overall configuration diagram of a fin height correction device according to an embodiment of the present invention. It is II-II partial sectional drawing of FIG. It is the figure which showed a pair of correction member. It is sectional drawing (not operating) of the brake for distance maintenance. It is sectional drawing (in operation) of the brake for distance maintenance. It is the flowchart which showed the control content of the controller.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows the overall configuration of a fin height correction device 100 according to an embodiment of the present invention. FIG. 2 shows a II-II cross section of FIG.

  The fin height correcting device 100 includes an upper correcting member 1, a lower correcting member 2, a gap adjusting servo motor 3, a gap holding brake 4, a positioning servo motor 5, a position holding brake 6, a subframe 7, a main frame A frame 8, a pedestal 9, a fin height sensor 10 and a controller 11 are provided.

  The upper correction member 1 and the lower correction member 2 separate the corrugated fins 12 from the pair of feed rolls 13 and 14 (FIG. 2) that send the corrugated fins 12, and correct the fin height of the corrugated fins 12 to a desired height. It is a member to do. The upper correction member 1 is fixed to the subframe 7, and the lower correction member 2 is fixed to the main frame 8.

  As shown in FIG. 3, each of the upper correction member 1 and the lower correction member 2 has end faces along the root circles of the pair of feed rolls 13 and 14, and the meshing portions of the pair of feed rolls 13 and 14. Plate-shaped fin removers 1r and 2r arranged close to the outlet side are fixed with bolts. The fin removers 1r and 2r are disposed on the meshing portion outlet side of the pair of feed rolls 13 and 14, come into contact with the corrugated fins 12 passing between the pair of feed rolls 13 and 14, and from the pair of feed rolls 13 and 14 The corrugated fins 12 are securely separated.

  When the corrugated fins 12 separated from the pair of feed rolls 13 and 14 are passed through the wrist-like gap 15 formed between the upper correction member 1 and the lower correction member 2, the fins higher than the desired height are corrected upward. The member 1 or the lower correction member 2 is contacted and reshaped, and the fin height is corrected (restricted) to a desired height.

  A plurality of upper correction members 1 and a plurality of lower correction members 2 are provided, whereby a plurality of wrist-like gaps 15 are formed in parallel in the rightward direction of FIG.

  The gap adjusting servo motor 3 is a servo motor for adjusting the wrist-like gap 15 and is fixed to the main frame 8.

  A feed screw 31 is connected to the gap adjusting servo motor 3, and a slide nut 32 is screwed to the feed screw 31. The subframe 7 is fixed to the slide nut 32.

  When the feed screw 31 is rotated by the gap adjusting servo motor 3, the slide nut 32 and the sub frame 7 are displaced, and the upper correction member 1 fixed to the sub frame 7 is displaced with respect to the lower correction member 2, thereby The wrist-like gap 15 is adjusted.

  As shown in FIG. 4A, the gap holding brake 4 is fixed to the main frame 8 and a flange portion 41, a friction material 43 connected to the flange portion 41 via a leaf spring 42, a magnetic body 44 such as iron, and the like. And an electromagnetic coil 45. The flange portion 41 is fixed to the feed screw 31 by a bolt 46 with the key 41k fitted in the key groove 31g of the feed screw 31. When the gap adjusting servo motor 3 is driven, the flange portion 41 rotates together with the feed screw 31. To do.

  When the electromagnetic coil 45 is energized, as shown in FIG. 4B, the magnetic body 44 is attracted to the electromagnetic coil 45 against the leaf spring 42, and the friction material 43 comes into contact with the receiving portion 47 on the electromagnetic coil side, and the gap A brake acts on the servomotor 3 for adjustment.

  In this state, even if the energization to the gap adjustment servomotor 3 is stopped, the gap adjustment servomotor 3 is not displaced, and the upper correction member 1 is not displaced. That is, the size of the wrist-like gap 15 is maintained.

  Returning to FIG. 1, the positioning servo motor 5 displaces the entire upper correction member 1 and the lower correction member 2 in the same direction to align the center of the wrist-like gap 15 and the center of the corrugated fin 12. And is fixed to the base 9.

  A feed screw 51 is connected to the positioning servo motor 5, and a slide nut 52 is screwed into the feed screw 51. The main frame 8 is fixed to the slide nut 52.

  When the feed screw 51 is rotated by the positioning servo motor 5, the slide nut 52 and the main frame 8 are displaced, and the entire upper correction member 1 and lower correction member 2 are displaced in the same direction.

  The position holding brake 6 is a brake that applies the brake to the positioning servo motor 5 and holds the entire positions of the upper correction member 1 and the lower correction member 2. Since the structure of the position holding brake 6 is the same as that of the gap holding brake 4 shown in FIGS. 4A and 4B, the description thereof is omitted here.

  The fin height sensor 10 is a sensor that is installed on the outlet side of the fin height correction device 100 and measures the fin height after correction. The measurement value of the fin height sensor 10 is output to the controller 11.

  The controller 11 is a controller for controlling the gap adjusting servo motor 3, the gap holding brake 4, the positioning servo motor 5 and the position holding brake 6, and includes a CPU, a storage device (RAM, ROM, etc.) It consists of an output interface.

  FIG. 5 is a flowchart showing the control contents of the controller 11. A procedure for adjusting the wrist-like gap 15 will be described with reference to this.

  In S <b> 1, the controller 11 sets a target value for the wrist-like gap 15. The target value is automatically set based on the difference between the fin height measured by the fin height sensor 10 and the desired fin height (design value) by correcting the previous value so that the difference becomes zero. Is done. The initial value of the target value is determined by selecting an appropriate value from among a plurality of values stored in the storage device of the controller 11 according to the type of corrugated fin 12 to be manufactured (type of heat exchanger). Set automatically.

  In S2, the controller 11 calculates the target position of the gap adjusting servo motor 3 based on the target value. Since there is a unique relationship between the position of the gap adjusting servo motor 3 and the size of the wrist-like gap 15, once the target value of the wrist-like gap 15 is determined, the gap adjustment servo motor 3 is The target position can be easily calculated.

  In S3, the controller 11 feedback-controls the position of the gap adjustment servomotor 3 so that the position of the gap adjustment servomotor 3 becomes the target position calculated in S2.

  In S <b> 4, the controller 11 energizes the electromagnetic coil 45 of the gap holding brake 4 to apply the brake to the gap adjusting servo motor 3.

  In S <b> 5, the controller 11 stops energizing the gap adjusting servo motor 3.

  If the servo motor 3 for gap adjustment is left energized, the servo motor 3 for gap adjustment is sequentially driven by feedback control each time the upper correction member 1 is pushed by a fin exceeding the desired fin height. The size of the wrist-like gap 15 varies, and the accuracy of the fin height is reduced. The process of S4 and S5 is for preventing this.

  In S <b> 6, the controller 11 calculates a target position of the alignment servomotor 5 in which the center of the re-like gap 15 in the fin height direction and the center of the corrugated fin 12 are aligned. If the center of the wrist-like gap 15 and the center of the corrugated fin 12 are aligned before the gap adjusting servomotor 3 is driven in S3, the target position of the positioning servomotor 5 is determined at that time. This position is obtained by adding half of the drive amount of the gap adjusting servo motor 3 in S3 to the position of the positioning servo motor 5.

  In S7, the controller 11 feedback-controls the position of the alignment servomotor 5 so that the position of the alignment servomotor 5 becomes the target position calculated in S6.

  In S <b> 8, the controller 11 energizes the electromagnetic coil of the position holding brake 6 to apply the brake to the positioning servo motor 5.

  In S <b> 9, the controller 11 stops energization to the positioning servo motor 5.

  If the servo motor 5 for alignment is left in an energized state, the servo motor for alignment by feedback control every time the upper correction member 1 or the lower correction member 2 is pushed by a fin exceeding the desired fin height. 5 is sequentially driven, and the positional relationship between the center of the wrist-like gap 15 and the center of the corrugated fin 12 varies, resulting in a decrease in fin height accuracy. The process of S8 and S9 is for preventing this.

  The wrist-like gap 15 is adjusted by the above procedure.

  Then, the effect of this embodiment is demonstrated.

  In the present embodiment, the adjustment of the wrist-like gap 15 is performed by the gap adjustment servomotor 3 and the positioning servomotor 5, which is easier than the conventional adjustment method in which shims are replaced. As a result, the burden on the operator can be reduced and adjustment can be made in a short time, so that the production efficiency can be improved.

  After the wrist-like gap 15 is adjusted, the energization to the gap adjusting servo motor 3 and the positioning servo motor 5 is stopped, and the wrist-like gap 4 and the position holding brake 6 are used to restore the wrist-like gap. The size and position of the gap 15 were maintained. This prevents the size or position of the wrist-like clearance 15 from fluctuating due to the feedback control of the clearance adjustment servomotor 3 and the alignment servomotor 5, and prevents this from affecting the accuracy of the fin height. Can do.

  In addition, the fin height after correction is measured by the fin height sensor 10, and based on the difference between the measured fin height after correction and the desired fin height, the wrist-like gap 15 is adjusted so that the difference becomes zero. A target value was set and the restric clearance 15 was adjusted. Thereby, a desired fin height can be realized with high accuracy.

  The embodiment of the present invention has been described above, but the above embodiment is merely a part of an application example of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. is not.

  For example, in the above-described embodiment, the gap adjusting servo motor 3 is configured to displace only the upper correction member 1. For example, the gap adjusting servo motor 3 rotates a pair of feed screws whose screw spiral directions are reversed. The upper correction member 1 may be displaced by one feed screw, and the lower correction member 2 may be displaced in the direction opposite to the upper correction member 1 by the other feed screw.

DESCRIPTION OF SYMBOLS 1 Upper correction member 2 Lower correction member 3 Gap adjustment servo motor 4 Gap holding brake 5 Positioning servo motor 6 Position holding brake 10 Fin height sensor 11 Controller 12 Corrugated fin 15 Wrist-like gap 41 Flange (gap) Part rotated by servo motor for adjustment)
43 Friction material 45 Electromagnetic coil (electromagnetic means)
47 Receiving part (part which is not rotated by the servo motor for gap adjustment)
100 Fin height correction device

Claims (9)

A fin height correction device for correcting the fin height of a corrugated fin for a heat exchanger,
A pair of correction members that are arranged at intervals so as to form a wrist-like gap therebetween, and correct the fin height by contacting the fins of the corrugated fins that pass through the wrist-like gap;
A gap adjusting servo motor for adjusting the size of the wrist-like gap;
A brake for holding the gap for adjusting the wrist-like gap by applying a brake to the servo motor for gap adjustment;
A controller that adjusts the wrist-like gap by the gap adjustment servo motor, and after the adjustment, causes the brake to act on the gap adjustment servo motor by the gap holding brake, and stops energization of the gap adjustment servo motor; ,
A fin height straightening device comprising: It is a fin height correction apparatus of Claim 1, Comprising:
The gap adjusting servo motor displaces one of the pair of correction members with respect to the other of the pair of correction members.
The fin height correction apparatus characterized by the above-mentioned. It is a fin height correction apparatus of Claim 1, Comprising:
The gap adjusting servo motor displaces the pair of correction members in opposite directions,
The fin height correction apparatus characterized by the above-mentioned. It is a fin height correction apparatus in any one of Claim 1 to 3,
An alignment servomotor that displaces the entire pair of correction members in the same direction and aligns the center of the wrist-like gap and the center of the corrugated fin;
A position holding brake that acts on the positioning servo motor and holds the position of the entire pair of correction members;
With
The controller adjusts the position of the pair of correction members as a whole by the alignment servo motor, and after adjustment, causes the brake to act on the alignment servo motor by the position holding brake. Stop energizing the
A fin height correcting device characterized by comprising the fin height correcting device. It is a fin height correction apparatus in any one of Claim 1 to 4,
The gap holding brake is a brake that makes a friction material provided at a part rotated by the gap adjusting servomotor contact a part not rotated by the gap adjusting servomotor.
The fin height correction apparatus characterized by the above-mentioned. The fin height correcting device according to claim 5,
The gap holding brake displaces the friction material by electromagnetic means.
The fin height correction apparatus characterized by the above-mentioned. It is a fin height correction apparatus in any one of Claim 1 to 6,
The position holding brake is a brake that causes a friction material provided in a portion rotated by the positioning servo motor to contact a portion not rotated by the positioning servo motor.
The fin height correction apparatus characterized by the above-mentioned. It is a fin height correction apparatus of Claim 7, Comprising:
The position holding brake displaces the friction material by electromagnetic means;
The fin height correction apparatus characterized by the above-mentioned. It is a fin height correction apparatus in any one of Claim 1 to 8,
It has a fin height sensor that measures the fin height after correction,
The controller adjusts the wrist-like gap based on a difference between the measured fin height after correction and a desired fin height.
The fin height correction apparatus characterized by the above-mentioned.

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