JP2013086123A - Feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feeder capable of preventing coming-off from a pressure roller of a belt.SOLUTION: A plurality of upper and lower pressure rollers 51 and 61 are disposed on both sides of a mandrel 7, respectively, to pressurize a belt body 10 toward the mandrel 7. The plurality of upper and lower pressure rollers 51 and 61 are arranged in a zig-zag manner along the mandrel 7. Thus, the belt body 10 is prevented from running off the pressure rollers 51 and 61 sideways.

Description

  The present invention relates to a feeding device used for feeding a long object such as a heat transfer tube of an air conditioner or a mandrel for expanding the heat transfer tube.

  Conventionally, as a feeding device, as shown in FIG. 6A, two belts 310 and 310 are arranged to face each other in the direction of arrow A, and a heat transfer tube 307 is sandwiched between the two belts 310 and 310 so that the heat transfer tube There is one in which 307 is conveyed in the direction of arrow C (Patent Document 1: FIG. 3 of Japanese Patent Laid-Open No. 2008-126268).

  In order to press the two belts 310 and 310 toward the heat transfer tube 307, a plurality of pressing rollers 351 and 361 are provided. The plurality of pressing rollers 351 and 361 are arranged in alignment along the axis of the heat transfer tube 307. That is, the axis of the upper pressure roller 351 and the axis of the lower pressure roller 361 are arranged on the same plane orthogonal to the conveying direction of the heat transfer tube 307 (arrow C direction).

  However, since the upper and lower pressure rollers 351 and 361 are arranged along the axis of the heat transfer tube 307 in the conventional feeding device, the pressure rollers 351 and 361 adjacent in the axial direction of the heat transfer tube 307 are arranged. If the rotations of the adjacent pressing rollers 351 and 361 are not synchronized, as shown in FIG. 6B, the portions 310a and 310b of the belt 310 between the adjacent pressing rollers 351 and 361 are in the vertical direction A and the conveying direction. There is a problem that the belt 310 is bent in the side direction B perpendicular to C, and the belt 310 falls off from the pressing rollers 351 and 361 in the side direction B.

JP 2008-126268 A (FIG. 3)

  Therefore, an object of the present invention is to provide a feeding device that can prevent the belt from falling off from the pressing roller.

In order to solve the above problems, the feeding device of the present invention is:
A belt body that conveys while holding a long object;
A pulley around which the belt body is wound;
A driving device for driving the pulley;
A plurality of pressing rollers that press the belt body toward the long object,
The plurality of pressing rollers are characterized by being arranged in a zigzag manner along the axis of the long object on both sides of the long object.

  According to the feeding device of the present invention, the plurality of pressing rollers are arranged in a staggered manner along the long object on both sides of the long object, so the belt body sandwiches the long object. It is possible to prevent detachment from the pressing roller in a direction (hereinafter, referred to as a side direction) orthogonal to the direction on both sides (hereinafter referred to as the clamping direction) and the axial direction of the long object. Thereby, in order to prevent the belt body from dropping off in the side direction, a device (for example, a cylinder) for pushing the belt body from the side direction becomes unnecessary, and the size of the feeding device in the side direction can be reduced.

Moreover, in the feeding device of one embodiment,
The belt body is four round belts,
The four round belts contact the periphery of the long object.

  According to the feeding device of this embodiment, the belt body is four round belts, and the four round belts are in contact with the periphery of the long object. Can be transported. The four round belts have a characteristic that they easily fall off from the pressure roller due to their shape and quantity, but the four round belts are arranged in a staggered manner, so the belt falls off from the pressure roller. Can be prevented.

  Moreover, in the feeder of one Embodiment, the said elongate object is a mandrel for press-fitting in the heat exchanger tube of a heat exchanger, and expanding the said heat exchanger tube.

  According to the feeding device of this embodiment, since the long object is a mandrel, the feeding device of the present invention can reliably convey the mandrel and can reliably expand the heat transfer tube of the heat exchanger.

  Moreover, in the feeder of one Embodiment, the said elongate object is a heat exchanger tube of an air conditioner.

  According to the feeding device of this embodiment, since the long object is a heat transfer tube of an air conditioner, the feeding device of the present invention can reliably transport the heat transfer tube, and the heat transfer tube can be bent or cut. Predetermined processing such as processing can be reliably performed.

  According to the feeding device of the present invention, the plurality of pressing rollers are arranged in a staggered manner along the long object on both sides of the long object, so that the belt can be prevented from falling off from the pressing roller. .

It is a simplified front view which shows the pipe expansion apparatus using the feeding apparatus of one Embodiment of this invention. It is a simplified top view of a pipe expansion apparatus. It is sectional drawing of the principal part of a feeder. It is explanatory drawing explaining the effect when arrange | positioning a press roller in zigzag form. It is a simplified front view which shows the bender using the feeder of one Embodiment of this invention. It is explanatory drawing explaining the state which has arrange | positioned the press roller in alignment. It is explanatory drawing explaining the fault when a press roller is arranged and arranged.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

(First embodiment)
FIG. 1 is a front view showing a tube expansion device using a feeding device according to a first embodiment of the present invention. FIG. 2 is a plan view of the tube expansion device. As shown in FIG. 1 and FIG. 2, this tube expansion device includes a holding device 1 that holds a heat exchanger 5, and a feeding device 2 that feeds the holding device 1 while holding a mandrel 7 as an example of a long object. Is provided.

  The heat exchanger 5 includes a plurality of heat transfer tubes 6 and a plurality of radiating fins (not shown). The heat transfer tube 6 is made of a metal having excellent thermal conductivity, spreadability, and corrosion resistance, such as a copper tube or an aluminum tube.

  The mandrel 7 has a bar portion 7a and a head portion 7b fixed to the tip of the bar portion 7a. By press-fitting the head portion 7b of the mandrel 7 into the heat transfer tube 6, the heat transfer tube 6 is expanded, and the heat transfer tube 6 is integrally fixed to the radiating fins, so that the heat efficiency of the heat exchanger 5 is improved.

  The holding device 1 includes a base part 31 and a plurality of clamp parts 32 attached to the base part 31. The base part 31 mounts the heat exchanger 5 thereon. The plurality of clamp portions 32 are arranged along the longitudinal direction of the heat exchanger 5 so as to be positioned on both the left and right sides of the heat exchanger 5. The clamp part 32 is configured to approach or separate from the heat exchanger 5. And the some clamp part 32 contacts the heat exchanger 5, and clamps the heat exchanger 5 from both sides. Thereby, the heat exchanger 5 is held by the holding device 1. In addition, in FIG. 1, the clamp part 32 is shown with the virtual line.

  The feeding device 2 includes a pair of belt bodies 10 and 10 that convey while holding one mandrel 7, pulleys 21, 22, 23, and 24 around which the pair of belt bodies 10 and 10 are wound, and a pulley 21. , 22, 23, and 24, and a plurality of pressing rollers 51 and 61 that press the pair of belt bodies 10 and 10 toward the mandrel 7. The feeding device 2 feeds the mandrel 7 to the heat transfer tube 6 side in parallel to the heat transfer tube 6 while sandwiching the mandrel 7.

  As shown in the schematic diagram of FIG. 3, the pair of belt bodies 10 includes four round belts 11, 12, 13, and 14, and the four round belts 11, 12, 13, and 14 correspond to the mandrel 10. Contact the surroundings. That is, the upper belt body 10 is two round belts 11 and 12, and the lower belt body 10 is two round belts 13 and 14. The round belts 11, 12, 13, and 14 have a substantially circular cross section, and are made of, for example, rubber or flexible synthetic resin.

  As shown in FIGS. 1 to 3, the first pulley 21, 23 and the second pulley 22, 24 are rotatably attached to the main body 20, and the second pulley 22, 24 is opposed to the first pulley 21, 23. ing. In FIG. 2, the main body 20 is omitted.

  Two belt bodies 10 are wound around the first pulleys 21 and 23, and two belt bodies 10 are wound around the second pulleys 22 and 24.

  Hereinafter, one belt body 10 wound around the first pulleys 21 and 23 and one belt body 10 wound around the second pulleys 22 and 24 will be described. The other belt bodies 10 and 10 have the same configuration.

  Two round belts 11 and 12 are wound around the first pulleys 21 and 23, and two round belts 13 and 14 are wound around the second pulleys 22 and 24. The belts 11, 12, 13, and 14 are synchronized.

  More specifically, a motor 3 is attached to the shaft of the first pulley 21 on the holding device 1 side (downstream in the conveyance direction of the mandrel 7), and the first pulley on the downstream side is driven by driving the motor 3. 21 rotates. A first gear (not shown) is fixed to the shaft of the first pulley 21 on the downstream side, and a second gear (not shown) is fixed to the shaft of the second pulley 22 on the downstream side. The second gear meshes with each other. In this way, the first and second pulleys 21 and 22 on the downstream side are synchronized, and the four round belts 11, 12, 13, and 14 are synchronized and conveyed at the same speed.

  As shown in FIG. 3, two arc-shaped belt grooves 25, 25, 26 in which two round belts 11, 12, 13, 14 are fitted in the first and second pulleys 21, 22 on the downstream side, respectively. , 26, and projections 27, 28 that are located between the two round belts 11, 12, 13, 14, and that are in surface contact with the two round belts 11, 12, 13, 14, have two substantially circular arcs. Is provided. Although not shown, the upstream first and second pulleys 23 and 24 are also provided with the same protrusions as the protrusions 27 and 28.

  Due to the presence of the protrusions 27 and 28 that are in surface contact with the two round belts 11, 12, 13, and 14, the round belts 11, 12, 13, and 14 are in contact with the first and second pulleys 21, 23, 22, and 24. The area increases and the carrying capacity increases.

  As shown in FIGS. 1 and 2, the plurality of pressing rollers 51 and 61 are arranged in a staggered manner along the axis of the mandrel 7 on both upper and lower sides with the mandrel 7 interposed therebetween. That is, the axis of the upper pressure roller 51 and the axis of the lower pressure roller 61 are not on the same plane orthogonal to the conveyance direction of the mandrel 7 and do not overlap when viewed from the vertical direction.

  The upper pressing roller 51 is disposed inside the round belts 11 and 12 wound around the first pulleys 21 and 23. The upper pressing roller 51 is rotatably attached to the support member 52. The support member 52 is attached to a cylinder 53 attached to the main body 20. The cylinder 53 can press the support member 52 downward.

  The lower pressing roller 61 is disposed inside the round belts 13 and 14 wound around the second pulleys 22 and 24, and supports the round belts 13 and 14 from the inside. The lower pressing roller 61 is rotatably attached to a support member 62 attached to the main body 20.

  Then, the cylinder 53 is pressed against the round belts 11 and 12 by pressing the upper pressing roller 51 toward the round belts 11 and 12, as indicated by the white arrows in FIG. The mandrel 7 is strongly pressed by the round belts 13 and 14 supported by the pressing roller 61, and a large conveying force is obtained.

  As shown in FIGS. 1 and 2, the feeding device 2 is arranged in the vicinity of the holding device 1. In other words, in a state where the mandrel 7 starts to be press-fitted into the heat transfer tube 6, the feeding device 2 can apply a thrust to the mandrel 7 at least at a position closer to the heat transfer tube 6 than a position half the length of the mandrel 7. Furthermore, the feeding device 2 is approaching the holding device 1. In other words, in a state in which the mandrel 7 starts to be press-fitted into the heat transfer tube 6, the first and second pulleys 21 and 22 on the downstream side are positioned between the half position of the mandrel 7 and the tip of the head portion 7 b. Arranged. Thus, since the thrust to the mandrel 7 is applied in the vicinity of the heat transfer tube 6, when the mandrel 7 is press-fitted into the heat transfer tube 6 and the heat transfer tube 6 is expanded, buckling of the mandrel 7 can be prevented. .

  Next, the operation of the tube expansion device having the above configuration will be described.

  As shown in FIGS. 1 and 2, the heat exchanger 5 is held by the holding device 1, and then the mandrel 7 is indicated by the white arrow in FIG. 1 while the mandrel 7 is held by the feeding device 2. To the heat transfer tube 6 side (forward). At this time, the synchronized round belts 11, 12, 13, and 14 are sent at the same speed, press four places at equal intervals around the mandrel 7, and convey the mandrel 7 forward. And the head part 7b of the mandrel 7 is press-fitted into the heat transfer tube 6 of the heat exchanger 5, and the heat transfer tube 6 is expanded.

  According to the feeding device 2 having the above-described configuration, the plurality of upper and lower pressing rollers 51 and 61 are arranged in a staggered manner along the mandrel 7 on both sides of the mandrel 7, so that the belt body 10 is provided with the mandrel. 7 is separated from the pressing rollers 51 and 61 in a direction (hereinafter referred to as a side direction) perpendicular to a direction on both sides (hereinafter referred to as a clamping direction) sandwiching 7 and an axial direction (conveying direction) of the mandrel 7. Can be prevented. The clamping direction refers to the vertical direction in FIG. 1, and the side direction refers to a direction orthogonal to the paper surface of FIG.

  Thereby, in order to prevent the belt body 10 from falling off in the side direction, a device (for example, a cylinder) for pushing the belt body 10 from the side direction becomes unnecessary, and the size of the feeding device 2 in the side direction is reduced. it can.

  As a reason for this, as shown in FIG. 4, a plurality of upper and lower pressing rollers 51, 61 are arranged in a staggered manner along the axis of the mandrel 7, thereby being adjacent to the axial direction (conveying direction) of the mandrel 7. Even if the rotation of the adjacent pressing rollers 51 and 61 cannot be synchronized in the pressing rollers 51 and 61, the belt body 10 can escape in the clamping direction A, that is, the portions 10a, 10b, 10c curves in the clamping direction A, and the belt body 10 does not fall off in the side direction B. In FIG. 4, the curvature of the belt body 10 is expressed excessively for the sake of clarity.

  The pair of belt bodies 10 are four round belts 11, 12, 13, and 14, and the four round belts 11, 12, 13, and 14 are in contact with the periphery of the mandrel 7. Round belts 11, 12, 13, and 14 can transport mandrels 7 of various diameters. The four round belts 11, 12, 13, and 14 have a characteristic that the four round belts 11, 12, 13, and 14 are easy to drop off from the pressing rollers 51 and 61 due to their shape and quantity. Are arranged in a zigzag pattern, it is possible to prevent the round belts 11, 12, 13, and 14 from falling off the pressing rollers 51 and 61.

  Moreover, in the said pipe expansion apparatus, since the said feeding apparatus 2 of this invention is used, the mandrel 7 can be reliably conveyed with the feeding apparatus 2, and the heat exchanger tube 6 of the heat exchanger 5 can be expanded reliably.

(Second Embodiment)
FIG. 5 is a front view showing a vendor using the feeding device of the present invention. In the second embodiment, the same reference numerals as those in the first embodiment are the same as those in the first embodiment, and the description thereof is omitted.

  This bender has a cutter unit 100 and a bender unit 200. The cutter unit 100 includes a leveler 102 for removing wrinkles such as bending of a heat transfer tube 8 of an air conditioner as an example of a long object, and a heat transfer tube 8 in which wrinkles from the leveler 102 are corrected. The feed device 2 of the first embodiment and the cutter mechanism 104 that can be moved back and forth to cut the heat transfer tube 8 at a predetermined location are provided.

  The bender unit 200 can be moved back and forth to adjust the cutting position of the heat transfer tube 8 by the cutter mechanism 104, and has a stopper 105 that contacts and positions the tip of the heat transfer tube 8, and the heat transfer that is positioned by the stopper 105. And a bending mechanism 106 for bending the heat tube 8.

  Next, the operation of the vendor configured as described above will be described.

  When the heat transfer tube 8 having a substantially circular cross section is supplied from the leveler 102 to the feed device 2, the feed device 2 feeds the heat transfer tube 8 forward while sandwiching the heat transfer tube 8. At this time, the plurality of upper and lower pressing rollers 51 and 61 are arranged in a staggered manner along the heat transfer tube 8 on both sides of the heat transfer tube 8, so that the belt body 10 is detached from the pressure rollers 51 and 61. The heat transfer tube 8 can be reliably conveyed.

  When the sensor 171 detects that the tip of the heat transfer tube 8 has come into contact with the stop 105, the control unit 170 receives a signal from the sensor 171 indicating that the tip of the heat transfer tube 8 has come into contact with the stop 105. Then, the conveyance of the heat transfer tube 8 by the feeding device 2 is stopped. Thereafter, the heat transfer tube 8 is cut by the cutter mechanism 104, and the heat transfer tube 8 is bent by the bending mechanism 106.

  Therefore, since the vendor uses the feeding device 2 of the present invention, the heat transfer tube 8 can be reliably conveyed by the feeding device 2, and the heat transfer tube 8 is subjected to predetermined processing such as bending or cutting. Can be done reliably.

  In addition, this invention is not limited to the above-mentioned embodiment. For example, the feature points of the first and second embodiments may be variously combined. Moreover, in the said embodiment, although the said feeding apparatus was used for the horizontal installation apparatus which moves a mandrel to a horizontal direction, and the horizontal installation bender which moves a heat exchanger tube to a horizontal direction, a mandrel is moved to a perpendicular direction. You may use for the vertical installation pipe expansion apparatus and the horizontal installation bender which moves a heat exchanger tube to a perpendicular direction.

  Further, a plurality of mandrels or a plurality of heat transfer tubes may be conveyed by one belt body. Further, the number of belt bodies may be increased or decreased, and the shape of the belt body may be a round shape, an oval shape, a square shape, or the like. In addition to the round belt, a timing belt or a chain belt may be used as the belt body. Moreover, it is good also as a structure which combined the motor and the some gearwheel as a drive device instead of the motor.

  Further, the long object is not limited to a mandrel or a heat transfer tube, and the feeding device of the present invention can be used for conveying any long object. In particular, if the cross section of the long object is substantially circular, the long object can be transported more satisfactorily.

2 Feeder 3 Motor (Driver)
5 Heat exchanger 6 Heat transfer tube 7 Mandrel (long)
8 Heat transfer tubes (long)
DESCRIPTION OF SYMBOLS 10 Belt body 11, 12, 13, 14 Round belt 21, 23 1st pulley 22, 24 2nd pulley 51, 61 Pressing roller

Claims (4)

A belt body (10) that conveys while holding a long object (7, 8);
Pulleys (21, 22, 23, 24) around which the belt body (10) is wound;
A driving device (3) for driving the pulleys (21, 22, 23, 24);
A plurality of pressing rollers (51, 61) for pressing the belt body (10) toward the long object (7, 8);
The plurality of pressing rollers (51, 61) are arranged in a staggered manner along the axis of the long object (7, 8) on both sides of the long object (7, 8). Feeding device characterized. The feeding device according to claim 1,
The belt body (10) is four round belts (11, 12, 13, 14),
The four round belts (11, 12, 13, 14) are in contact with the periphery of the long object (7, 8). In the feeding device according to claim 1 or 2,
The feeder according to claim 1, wherein the long object (7) is a mandrel for being press-fitted into a heat transfer tube (6) of a heat exchanger (5) to expand the heat transfer tube (6). In the feeding device according to claim 1 or 2,
The said long thing (8) is a heat exchanger tube of an air conditioner, The feeder characterized by the above-mentioned.

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