JPS60221133A - Pitch regulation equipment of corrugated fin - Google Patents

Abstract

PURPOSE:To provide the titled equipment to regulate easily and correctly a fin pitch irrespective of a forming speed, by forming to drive at the prescribed speed an endless belt holding oppositely both end parts of a corrugated fin fed out continuously from a forming gear wheel. CONSTITUTION:In the constitution that a hoop material 2 is formed to a corrugated fin 3 by the meshing part of forming gear wheels 1, 1 and fed out by a fin guide 4 with square shaped section, a corrugate pitch regulating device 27 consisting of a pair of endless elastic belts 14, 14 is provided at a notch part 13 formed on a part of the fin guide 4 of the front position of the above forming gear wheel 1. The above elastic belt 14 is stretched endlessly on a driving wheel 15, driven wheel 15(a) and guide wheel 24 rotated by a driving motor 17 via a connection shaft 16, plural projected pieces 14(a) are planted if necessary, and the corrugated fin 3 is held at proper pressure from up and down. By setting up properly the ratio of the revolution speed of the above driving motor 17 and the driving motor 26 of the forming gear wheel 1 the pitch of the corrugated fin 3 can be regulated easily and correctly.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a pitch adjusting device for corrugated fins used in heat exchangers and the like.

Conventional corrugated fins used in heat exchangers are made by rolling N97-1 material into a coil and feeding it continuously through a pair of forming gears arranged so as to mesh with each other. Although molding is performed while adjusting the corrugate pitch t-p+, conventional corrugate pitch adjusting devices have various drawbacks.

FIG. 1 shows a conventional example.

1 is a molded gear, and λ is a 7-1 material. The hoop material has dimensions such as, for example, a width of 50 am or less and a thickness of Llws or less, and is made of a material with good thermal conductivity such as Cu, Cu alloy, AJ or M metal, etc. Then, this tool 1 material λ is molded into a gear l.

The corrugated fins 3 are processed and formed by passing through the meshing portions of 1 and 3.

As mentioned above, since the corrugated fin 3 is made into a corrugated shape by inserting hoop material into the meshing part of the formed gears /, /, the full gate pitch depends on the pitch of the teeth of the formed gears /, /. It's enough. However, the pitch of the gear needs to maintain a constant relationship with the height of the a tooth in order for the two molded gears /, / to mesh and rotate with each other. The pitch cannot be extremely small compared to the height of .

For this reason, in the next step, the corrugated fin J'ks processed and formed by the forming gear /, / is made into a tubular fin guide with a U-shaped cross section and an opening at the top, or a tubular fin guide with a U-shaped cross section and beveled edges on all sides. Receive it in Hiroshi, and the axis! The corrugated fin 3 is pressed down by the adjustment plate t which applies a rotational force in the counterclockwise direction around Corrugated fin Jt-molding.

In the above, corrugated pitch! ! I4 adjustment is done by adjusting the tensile strength of the spring t tensioned on the bell crank 7 that rotatably supports the adjustment plate using the Vi-me adjustment bolt, and adjusting the direction in which the adjustment plate 4 presses the corrugated fin 3t. do. Since this corrugated fin J has elastic restoring force, i! 14 Adjusting plate 6t - The pitch will be slightly larger after passing through, but the adjustment bolt /.

Corrugate pitch can be adjusted by adjusting . Reference numeral 10 designates an L-shaped mounting bracket having a threaded hole that fits the adjustment bolt 2'kllA, // a lock nut, and 7.2 a mounting wall for the mounting bracket 70.

However, the above corrugate pitch adjustment method has the following problems.

■III! ] After adjusting the I&T state using the Yutaka bolter to form the desired pitch, the lock nut/
-2, the threaded part of the L-shaped mounting bracket A10 (tab p
The adjustment bolt is pulled by the amount of play in the screw hole (1 screw hole), which increases the spring tension and changes the adjustment state. However, it is actually extremely difficult to adjust the adjustment bolt by entering into the influence group by tightening the lock nut in advance.

■ If the force with which the adjusting plate 6 presses the corrugated fin Jvr is increased, the corrugated part will inevitably tilt, resulting in a defective product.

■ Furthermore, if the molding speed is increased, the corrugate pitch becomes irregular. This is due to the relationship between the frequency of vibration caused by the force that the adjustment plate repeatedly receives from the corrugated fin J, and the natural frequency of the vibration system consisting of the spring 1, the bell crank 7, the adjustment plate, etc. occurs. This is because the vibration of the adjustment plate does not follow the movement of the fin pitch.

Purpose of the Invention The present invention improves the above-mentioned drawbacks of the conventional methods (1), (2), and (3), and aims to provide a new device that can easily and accurately adjust the % fin pitch regardless of the molding speed. do.

Summary of the Invention In order to achieve the above-mentioned object, the corrugated fin pitch adjusting device according to the present invention applies force from a forming gear to the folded upper and lower end surfaces of a corrugated fin that is moving through a fin guide at an appropriate speed. A belt ti installed to be driven by
touch the corrugated fin, and adjust the speed of the corrugated fin's feeding force arbitrarily! It is constructed so that the corrugate pitch can be adjusted.

Embodiments Next, the invention will be described in detail with reference to FIGS. 2, 3, and 4.

In FIG. 2, formed gear 1. Hoop material 2 on the connecting part of l
The configuration in which the molded corrugated fins 3T are fed out through a fin guide having an opening-shaped or U-shaped cross section is the same as the conventional one.

-26 is a motor that drives one of the molded gears 4. However, in the present invention, for example, a notch is formed in a part of the fin guide≠, and a pair of elastic A corrugated pitch adjustment device 27 consisting of a bell)/4t and a /4 is provided.

The details of Lugutovich VSa* device 1lJ7 can be found in Part 3.
As shown in the figure, elastic belt/44. /Hiroha is the driving wheel/! , a driven wheel /ja and a plurality of guide wheels λ≠, each elastic belt is stretched endlessly.
t, /# are arranged symmetrically with the corrugated fin J at the center, that is, facing the upper and lower parts perpendicular to the running direction of the corrugated fin J, so that both ends of the corrugated fin J are in contact with each other as if being held between the t and glaze. Enter. This upper and lower elastic belt.

l≠ is provided so that the position can be adjusted in the vertical direction, so that it can be adjusted appropriately according to the height of the corrugated fin JO, and the corrugated fin clamping pressure can be adjusted to ta foil.

Figure 4 shows an example of the interlocking mechanism of elastic bells)/4< and /4(. The reduction tooth claw group-2-2 housed in is linked with the drive motor 17 via a connecting shaft /j, and the output shaft λOf is pulled out from the reduction gear IT via a vertical universal joint and connected to the gear box l. The output shaft is connected to the output shaft 〇, and the output shaft 〇 is connected to the drive wheel t.

Tsu'! 2. By constructing the structure as described above, one drive motor 17 drives the upper and lower elastic belts/44. /4
Each driving wheel of t/! ? , /j are driven individually and synchronously, so there is no possibility that the corrugated fins J will be tilted. It goes without saying that elastic belts /4', /# are preferably highly elastic, but protrusions lhia, /ga,
...1! - The protrusions lla may be provided at certain intervals so as to bite into the recesses of the corrugated fins 3 to provide an active anti-slip measure.

In the above, even if the protruding piece ll& coincides with the peak of the corrugated fin 3, since the belt 3 is highly elastic, the belt side will be dented and the corrugated fin! The side is also extremely thin, so move it to the front or rear of the protrusion/4Aa, which is more likely to be elastically deformed, and then use the belt! It is possible to eliminate slippage between the fins and the corrugated fins 3, and to prevent permanent deformation of the corrugated fins.

Therefore, if the increment circumference of forming gear l is e VA e belt speed vi-■-, then lk t MA'' VB, the corrugated pitch is equal to the forming gear pitch (strictly speaking, due to the elastic restoring force, the corrugated pitch is If Va > V gloss, the corrugated pitch will be smaller depending on the degree of gloss. Conversely, if Va < Ve, the corrugated pitch will be larger than the formed gear pitch. Note that the driving of the formed gear l The speed ratio between the motor t and the driving motor 17 for the elastic belt 1 is controlled and adjusted to a constant value by known means such as a gauge switch or a variable resistor.

Effects of the Invention As stated above, the present invention has the following effects.

■ Corrugate pitch adjustment The corrugate pitch is adjusted by arbitrarily adjusting the ratio between the speed of the belt and the forming speed of the forming gear, so when tightening the lock nut after adjustment with the adjustment bolt as in the past, the y4 alignment condition will change. In particular, the adjustment line of the elastic belt speed with respect to the forming speed of the corrugated fin, the rotation speed ratio setting device between each drive motor (ratio setting with a gauge switch, trend conversion t) This can be done by simply adjusting the gauge (which is good) by turning a dial or adjusting a gauge switch, so anyone can do it, regardless of their level of skill.

■ Conventionally, the scorgate fin was held diagonally by an adjustment plate, but according to the invention, an elastic bell) 1
The speed tIIl of the elastic belt with respect to the presser forming speed in the direction perpendicular to the running direction is calculated using: Since the corrugated pitch is adjusted by adjusting the corrugated pitch, there is no problem of the full gate part being tilted.

■ By increasing the speed of the elastic belt as well as the forming speed, it is possible to manufacture corrugated fins with a corrugated pitch larger than the formed gear pitch (conventional fins do not have a corrugated pitch smaller than the formed gear pitch). I couldn't even make two big ones).

■ Since there is no imaging system consisting of springs, bell crank % adjustment plates, etc., is there a problem with the molding speed? Even if it is fastened, the adjustment plate is unstable like in the past, and sometimes it lifts up and the tip of the adjustment plate separates from the corrugate fin, resulting in uneven corrugate pitch. Problems such as not being able to obtain corrugated fins with a constant pitch do not occur. Therefore, it is possible to significantly improve the main layer speed. Tsume power,
In the past, it was generally impossible to increase the production speed beyond the cell due to the limit of 50 m/min, but according to the invention, corrugate fins are of stable quality even when the speed is increased to about 200 m/min? What I was able to obtain is a round one that speeds up four times the normal speed line.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional corrugated fin pitch adjustment device, and FIG. 2 is an overall iS of the pitch adjustment device according to the invention.
l! Figures 3 and 3 are detailed views of the pitch adjustment device, and Figure 4 is an explanatory view of the power transmission mechanism. l...molded gear, λ...7-1 material, 3...corrugated fin, /4A...elastic belt, iz-drive wheel,
/! a... Driven wheel. Figure 1; 2 Figure 2 14a Figure 4 4

Claims (1)

[Claims] (XI) In a configuration in which corrugated fins are formed from two materials and continuously fed out, both ends of the corrugated fins are placed at the front position of the formed gear.
k (endless elastic pels for proper pressure clamping) 1 are provided facing each other,
A corrugated fin pitch adjustment device characterized in that the elastic belt is placed around a driving wheel and a driven wheel so that it can be driven at a sufficient speed.