Fin manufacturing device for heat exchanger

Abstract

The utility model provides a fin manufacturing device for a heat exchanger. The purpose of the present invention is to appropriately perform press working using a special mold even when the manufacturing speed of a heat exchanger fin is increased. The fin manufacturing device for the heat exchanger is provided with a pressing die, a special die, a pressing mechanism, and a switching driving part for switching the machining state of the special die according to the action of the pressing mechanism. The switching drive unit has a shaft, a first operation control body disposed on the press mechanism, a second operation control body disposed on the shaft so as to be aligned with the first operation control body, and a shaft drive unit that reciprocates the shaft in the longitudinal direction. A stopper for positioning the special mold at a working position where the special mold is in a processing state and at a non-working position where the special mold is in a non-processing state; and a buffer disposed at a portion where the stopper abuts against the shaft driving portion.

Description

TECHNICAL FIELD

[0001] The utility model relates to fin manufacturing device for heat exchanger. BACKGROUND

[0002] The fin manufacturing device for heat exchanger is used for manufacturing the fin for heat exchanger by intermittently conveying the plate-shaped fin manufacturing material and sequentially performing the stamping processing by multiple molds. In the fin manufacturing device for heat exchanger, the stamping processing is performed on the fin manufacturing material by the special mold only when the intermittent conveying is performed for an arbitrary number of times, and therefore, the structure provided with the processing control mechanism for selectively transmitting the action of the stamping mechanism to the special mold is disclosed in Patent Document 1 (Japanese Patent No. 6112242).

[0003] PRIOR ART DOCUMENTS

[0004] PATENT DOCUMENTS

[0005] Patent Document 1: Japanese Patent No. 6112242 SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] According to the structure of the fin manufacturing device for heat exchanger disclosed in Patent Document 1, the action of the stamping mechanism can be transmitted to the special mold at the desired time, and the fin for heat exchanger having a complex shape can be manufactured.

[0008] Figure 9 is a main part of the processing control mechanism disclosed in Patent Document 1. As shown in Figure 9 The processing control mechanism 400 disclosed in Patent Document 1 has a first action control body 410 provided on the lower surface of a main upper die module (not shown), two shafts 430 on which a second action control body 420 is installed, a guide body 440 connecting the two shafts 430, and a shaft driving portion 450 into which both end portions of the shaft 430 in the length direction are inserted. The shaft driving portion 450 moves the shaft 430 in the length direction of the shaft 430 by alternately supplying compressed air from the outside to both end portions of the shaft 430, and switches whether the fin manufacturing material is subjected to the stamping processing by the special mold. In the case where the manufacturing of the fin for heat exchanger is accelerated, it is necessary to increase the supply amount of the compressed air to the shaft driving portion 450 and increase the moving speed of the shaft 430. If the moving speed of the shaft 430 is increased, a stopper 460 for positioning the shaft 430 at a predetermined position is bounced when colliding with the shaft driving portion 450 or the like, and the second action control body 420 cannot be positioned at a predetermined position with respect to the first action control body 410, and it can be impossible to appropriately perform the switching action of the stamping processing by the special mold.

[0009] Solution for solving the problem

[0010] Therefore, the fin manufacturing device for heat exchanger aims to provide the following fin manufacturing device for heat exchanger: even if the manufacturing speed of the fin manufacturing device for heat exchanger is increased, the second action control body arranged on the shaft can be moved to a state of being reliably positioned at a predetermined position relative to the first action control body of the die assembly mounted on the main body, and the stamping processing performed by the special die can be properly performed.

[0011] A fin manufacturing device for heat exchanger, characterized by comprising: a first die and a second die for processing a fin manufacturing material into a fin for heat exchanger; a stamping mechanism for driving the first die and the second die; and a switching driving part for switching on and off the processing based on the second die at any time according to the action of the stamping mechanism, the switching driving part comprising: a shaft; a first action control body arranged at at least one position in the stamping mechanism and acted by the stamping action of the stamping mechanism; a second action control body arranged at a position opposite to the first action control body in the shaft and making the stamping action of the stamping mechanism transmitted to the second die by abutting against the first action control body; a shaft driving part into which both ends of the shaft are inserted and making the shaft reciprocate in the length direction; a stopper arranged at both ends of the shaft and positioned at a working position and a non-working position, the working position being a position opposite to the arrangement position of the first action control body so as to become a processing state of the second die processing the fin manufacturing material, and the non-working position being a position becoming a non-processing state of the second die not processing the fin manufacturing material when the second action control body is deviated from the arrangement position of the first action control body in the length direction; and a buffer arranged at the part abutting against each shaft driving part.

[0012] Preferably, the buffer is formed with a width dimension larger than the reciprocating movement range in the length direction of each shaft.

[0013] Further, there is a technical solution of a fin manufacturing device for a heat exchanger, which is characterized in that the fin manufacturing device for a heat exchanger is provided with: a first mold and a second mold for processing a fin manufacturing material into a fin for a heat exchanger; a punching mechanism for driving the first mold and the second mold; and a switching driving part for switching on and off the processing based on the second mold at any time for the operation of the punching mechanism, the switching driving part being provided with: a shaft; a first operation control body provided at at least one position in the punching mechanism and operated by the punching operation of the punching mechanism; a second operation control body provided at a position opposite to the first operation control body in the shaft and making the punching operation of the punching mechanism transmitted to the second mold by abutting against the first operation control body; a shaft driving part provided at both end portions of the shaft and provided with a approach-remote movement body for reciprocating the shaft in the length direction by approach-remote movement relative to a main body; a stopper provided adjacent to the approach-remote movement body at both end portions of the shaft and positioned at a working position and a non-working position, the working position being a position opposite to the provided position of the second operation control body relative to the first operation control body so as to become a processing state of the second mold processing the fin manufacturing material, the non-working position being a position becoming a non-processing state of the second mold not processing the fin manufacturing material when the second operation control body is deviated from the provided position of the first operation control body in the length direction; and a buffer respectively provided at a portion of each stopper abutting against the approach-remote movement body and a portion of the approach-remote movement body abutting against the main body of the shaft driving part.

[0014] Thus, even if the fin manufacturing device for a heat exchanger is made high-speed, the second operation control body provided at the shaft is moved in a state of being reliably positioned at a predetermined position relative to the first operation control body of the upper mold module mounted on the main body, and the punching processing of the special mold on the fin manufacturing material can be properly performed.

[0015] Further, it is preferable that the buffer be formed in a width dimension larger than the reciprocating movement range in the length direction of the shaft.

[0016] Further, it is preferable that the buffer provided at the portion of the approach-remote movement body abutting against the main body of each shaft driving part be provided in a state of protruding from an opposite surface of the main body relative to the approach-remote movement body to the approach-remote movement body side.

[0017] Thus, the stopper provided at the shaft initially collides with the buffer at the moving destination, and thus the rebound of the shaft can be more reliably prevented.

[0018] Effect of the utility model

[0019] By adopting the structure of the utility model, even if the manufacturing speed of the fin manufacturing device for heat exchanger is increased, the second action control body provided on the shaft is moved in a state of being reliably positioned at a predetermined position of the first action control body relative to the first die module installed on the main body, and the stamping processing of the special die on the fin manufacturing material can be properly performed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the front view of the fin manufacturing device for heat exchanger in the first embodiment.

[0021] Figure 2 is the right view of the output side part of the stamping part of the fin manufacturing device for heat exchanger shown in Figure 1 . Figure 1

[0022] Figure 3 is the top view of only the main part of the switching driving part in the state shown in Figure 2 .

[0023] Figure 4 is the enlarged view of the IV part in Figure 2 .

[0024] Figure 5 is the right view of the main part in the state of moving to the opposite side of the axial direction of Figure 3 and being in the non-processing state of the second die (the figure corresponding to Figure 2 in the non-processing state of the second die).

[0025] Figure 6 is the top view of only the main part of the switching driving part in the state shown in Figure 5 .

[0026] Figure 7 is the enlarged view of the VII part in Figure 5 .

[0027] Figure 8 is the top view of only the main part of the switching driving part in the processing state of the special die in the second embodiment.

[0028] Figure 9 is the main part schematic top view of the processing control mechanism disclosed in patent document 1. DETAILED DESCRIPTION

[0029] The fin manufacturing device for heat exchanger 100 to which the utility model is applied will be described below with reference to the accompanying drawings. Figure 1 The fin manufacturing device for heat exchanger 100 to which the utility model is applied will be described below with reference to the accompanying drawings.​

[0030] (First Embodiment)

[0031] like Figure 1 As shown, the heat exchanger fin manufacturing apparatus 100 in the first embodiment includes an uncoiler 10, a stamping and forming section 20, a buffer section 30, an inter-row slit forming device 40, a cutter 50, a suction section 60, a stacking section 70, a switching drive section 90, and an operation control section 200. Furthermore, the operation control section 200 controls the operation of the uncoiler 10, the stamping and forming section 20, the inter-row slit forming device 40, the cutter 50, the suction section 60, and the switching drive section 90, and can employ a known structure having an operation control program stored in a storage section (not shown) and an arithmetic unit represented by a CPU that operates based on the operation control program.

[0032] The uncoiler 10 is used to unwind the aluminum sheet 300, which is the material for manufacturing fins, from the coil 11 wound on a spool (not shown), and can employ a known structure. The stamping forming unit 20 includes an oil supply unit 21, a stamping die 22 as a first die (main die), a special die 23 as a second die (intermittent die), a stamping mechanism 24, and an intermittent feed mechanism 25. The stamping die 22 is mounted on the upper die assembly 26 of the main body. The special die 23 includes a special lower die 23A mounted on the lower die assembly 27 of the main body and a special upper die 23B supported by a force-applying member 28 erected on the lower die assembly 27 of the main body. The special upper die 23B is held at the upper stop position by the force-applying member 28. The special upper die 23B, together with the switching drive unit 90 described later, is held in a manner that allows it to move up and down on the retainer 29 erected on the lower die assembly 27 of the main body. The retainer 29 is erected in a position aligned with both ends in the left-right direction as shown in the attached drawing of the special mold 23. An opening (not shown) is formed on the inner side of the retainer 29 to allow the special upper mold 23B and the switching drive unit 90 to move up and down. In addition, a fluid supply path 29A, represented by a hose connector for supplying externally supplied fluid (compressed air) to the shaft drive unit 95 of the switching drive unit 90, is housed in the internal space of the retainer 29.

[0033] An aluminum plate 300 coated with processing oil by an oil supply section 21 is processed into a metal strip 310 of a predetermined shape by a stamping die 22 that is pressed and separated by a stamping mechanism 24 (see reference). Figure 2). In addition, the metal strip body 310 is additionally processed by a special die 23 that approaches and moves away by the lifting action of a punch mechanism 24 at an arbitrary timing by switching the drive section 90. The metal strip body 310 processed into a predetermined shape is intermittently conveyed from the punch forming section 20 in synchronization with the action of the punch mechanism 24 by an intermittent feed mechanism 25. The buffer section 30 in this embodiment is a space that places the metal strip body 310 conveyed from the punch forming section 20 in a state of being slack downward, and buffers the difference between the forming length and the cutting length based on the punch forming section 20 and the cutting machine 50 described later each time. The buffer section 30 can also be composed of a guide member or the like that makes the metal strip body 310 into a predetermined slack shape.

[0034] The intercolumnar slit forming device 40 forms an unillustrated intercolumnar slit extending in the conveying direction of the metal strip body 310 with respect to the metal strip body 310 every desired width dimension (every product width) that is formed into a long strip body of the heat exchanger fin 330 as a final product having a plurality of columns in the width direction (a direction orthogonal to the conveying direction of the heat exchanger fin 330 in the same plane). The intercolumnar division knife 41 in the intercolumnar slit forming device 40 has an upper knife 42 as a first knife and a lower knife 44 as a second knife. The upper knife 42 and the lower knife 44 are disposed in a state of facing each other with the metal strip body 310 interposed therebetween, and the upper knife 42 performs a contact separation motion with respect to the lower knife 44 (the upper surface of the metal strip body 310) in synchronization with the action of the punch mechanism 24.

[0035] The metal strip body 310 formed with the intercolumnar slit by the intercolumnar slit forming device 40 becomes a product width metal strip body 320 and is intermittently conveyed in a product length by the conveying device 51 disposed at the cutting machine 50. The product width metal strip body 320 is held by suction by the suction surface 61 of the suction section 60 disposed at the downstream side of the cutting machine 50. At this time, the length of the product width metal strip body 320 protruding from the cutting knife 52 of the cutting machine 50 is equal to the product length (the length of the heat exchanger fin 330).

[0036] Thus, the product width metal strip body 320 is cut by the cutting blade 52 into the heat exchanger fin 330 as the final product from the state in which the product length portion on the front end side is sucked by the suction surface 61. A stacking portion 70 having a stacking stage 72 is provided at a position on the lower side of the suction surface 61 of the suction portion 60, and a stacking pin 71 is vertically provided on the stacking stage 72 in a position aligned with a not-shown through hole for a pipe to be inserted formed in the heat exchanger fin 330 held in the state of being sucked by the suction surface 61. The stacking portion 70 is movable since a caster 73 is installed on the bottom surface. If the not-shown suction device of the suction portion 60 is temporarily stopped by the action control portion 200, the heat exchanger fin 330 falls from the suction surface 61 and is stacked on the stacking stage 72 in a state in which the stacking pin 71 penetrates the through hole. If a predetermined number of heat exchanger fins 330 are stacked in the stacking portion 70, the stacking portion 70 is transported to the next step by an operator or the like. In addition, the stacking portion 70 in an empty state is provided in an aligned state with the suction portion 60, and the above action is repeated.

[0037] As shown in Figures 1 to 3 , a switching drive portion 90 that performs switching of whether or not to perform press working using the special die 23 is provided in the press forming portion 20 of the heat exchanger fin manufacturing device 100 of the present embodiment. The press die 22 always performs press working on the aluminum plate 300 in synchronization with the up-down action (raising and lowering action) of the press mechanism 24, and in contrast to this, the special die 23 performs press working on the metal strip body 310 at an arbitrary timing using the up-down action of the press mechanism 24 via the switching drive portion 90.

[0038] As shown in Figure 2 and Figure 3 , the switching drive portion 90 in the present embodiment is provided with two shafts 91, a guide body 92, a first action control body 93, a second action control body 94, a shaft drive portion 95, a stopper 96, and a buffer 97. The shafts 91 are provided in parallel to each other at a required interval in the press forming portion 20 in a direction orthogonal to the transport direction of the aluminum plate 300 in the horizontal plane. The two shafts 91 are connected at at least one position in the length direction thereof by the guide body 92. Both of the shafts 91 penetrate the guide body 92 and are provided so as to be able to slide with respect to the guide body 92 in the length direction of the shaft 91. The guide body 92 is vertically provided on the special die 23 (the special upper die 23B). The stoppers 96 for positioning are installed in a state in which they are respectively fixed to both end portions of the two shafts 91.

[0039] The first action control body 93 in the present embodiment is provided so as to be able to move with respect to the tab 26A of the main body upper die module 26 that is a part of the press forming portion 20 by a known method. The second action control body 94 is provided so as to be able to move with respect to the special upper die 23B by a known method. Figure 4) to the lower side with respect to the tab 26A from the lower surface of the main body upper die module 26, and performs up-and-down movement in the same plane position toward the main body lower die module 27 side (in the arrow direction of Figure 4 and Figure 7 the arrow direction) in synchronization with the up-and-down movement of the press mechanism 24. The second movement control body 94 is formed as a protruding body (annular body covering the shaft 91 from the outside) protruding from the outer peripheral surface of the shaft 91 so as to be fixed to the shaft 91 in a state in which the plane position overlaps the arrangement position of the first movement control body 93. In addition, the second movement control body 94 is arranged so as to be aligned with the inside of the arrangement position of the stopper 96 (central portion side in the length direction of the shaft 91) at both end portions in the length direction of the shaft 91 (left and right end portions of the shaft 91), and the positional deviation of the stopper 96 is prevented.

[0040] The shaft driving portion 95 has a main body 95A, fluid inlets 95B, and a close-approach and away movement body 95C. The fluid inlets 95B are arranged at a plurality of positions on the outer side surface of the main body 95A. The fluid supply path 29A is connected to the fluid inlets 95B. A flow path 95D is formed in the inside of the main body 95A, communicates with the plurality of fluid inlets 95B, and opens at a plurality of positions on the inner side surface of the main body 95A. A plurality of piston rods 95E that reciprocate in the depth range of the opening portion of the flow path 95D by the fluid supplied from the fluid inlets 95B are housed in the opening portion of the flow path 95D of the main body 95A. The inner side end portions of these piston rods 95E are connected to each other to integrate a plate 95F. The close-approach and away movement body 95C in the present embodiment is constituted by the piston rods 95E and the plate 95F.

[0041] The close-approach and away movement body 95C moves away from the main body 95A on the left end portion side by the fluid (compressed air) supplied from the fluid inlets 95B of the shaft driving portion 95 on the first end portion side in the length direction of the shaft 91 (left end portion side in the present drawing) from the outside. In contrast, the close-approach and away movement body 95C on the right end portion side moves away from the main body 95A on the right end portion side by the fluid supplied from the fluid inlets 95B of the shaft driving portion 95 on the second end portion side in the length direction of the shaft 91 (right end portion side in the present drawing). Thus, if the shaft driving portion 95 on either one of the left end portion side and the right end portion side is focused on, the close-approach and away movement body 95C moves close to and away from the main body 95A by the fluid supplied from the fluid inlets 95B from the outside. The shaft 91 is arranged inside the close-approach and away movement body 95C on the left end portion side and the right end portion side, and thus the shaft 91 also moves in the length direction in response to the close-approach and away movement of the close-approach and away movement body 95C with respect to the main body 95A.

[0042] A cushion member 97 is provided on the inner side of the plate 95F near the opening of the flow path 95D. The inner side of the cushion member 97 provided on the opening of the flow path 95D (the main body 95A) is preferably protruded from the inner side of the main body 95A. Further, the cushion member 97 provided on the inner side of the plate 95F is formed to have a height higher than that of the stopper member 96 fixed to the both end portions of the shaft 91. According to such a cushion member 97, the approaching and departing moving body 95C and the shaft 91 initially collide with the cushion member 97, and the impact at the time of collision can be absorbed, and generation of a rebound at the time of movement of the approaching and departing moving body 95C and the shaft 91 can be prevented. Further, the cushion member 97 is a material capable of absorbing the impact as represented by so-called low-elastic rubber, elastically deformed to the width dimension of the stopper member 96, and does not impair the positioning function of the shaft 91 based on the stopper member 96, and the material of the cushion member 97 is not particularly limited.

[0043] Next, the operation of the switching drive unit 90 in the present embodiment will be described. Figures 2 to 4 is a view showing a state (working position) in which the special die 23 processes the metal band-shaped body 310. Specifically, it is a state after the operation control unit 200 supplies compressed air from a fluid supply source not shown to the main body 95A of the shaft drive unit 95 on the right side in the drawing. At this time, it becomes a state in which the left end portion of the shaft 91 abuts against the main body 95A (the plate 95F) of the shaft drive unit 95 on the left side in the drawing. Further, it becomes a state in which at least a part of the planar positions of the first operation control body 93 and the second operation control body 94 of the upper die module 26 mounted on the main body overlap. In this state, as shown in Figure 2 and Figure 4 , the lowering operation of the upper die module 26 of the press mechanism 24 is transmitted to the special upper die 23B with the aid of the first operation control body 93, the second operation control body 94, and the guide body 92. Thereby, the special upper die 23B is lowered while overcoming the upward force of the biasing member 28, and the metal band-shaped body 310 (not shown) is press-processed by the special upper die 23B and the special lower die 23A.

[0044] Further, if the press mechanism 24 is raised (the upper die module 26 and the lower die module 27 are separated), the special upper die 23B returns to the upper dead point position (initial position) by the upward force of the biasing member 28. Thus, during the period in which the state shown in Figures 2 to 4 is maintained, the press processing of the metal band-shaped body 310 by the special die 23 can be repeatedly performed in synchronization with the lowering and raising operations of the upper die module 26 of the press mechanism 24.

[0045] Further, if the operation control unit 200 supplies compressed air from a fluid supply source not shown to the main body 95A of the shaft drive unit 95 on the right side in the drawing, Figure 5 and Figure 6the left side of the shaft driving section 95 in the drawing is supplied with compressed air, the approach-avoiding moving body 95C in the left side of the shaft driving section 95 moves away from the main body 95A, and the stopper 96 on the left side of the shaft 91 abuts against the shaft 91 to slide and move the shaft 91 to the right side (in the length direction of the shaft 91). The buffer 97 is installed on the outer side of the plate 95F of the approach-avoiding moving body 95C so as to protrude (project) outwardly with respect to the stopper 96, and therefore, the impact at the time when the approach-avoiding moving body 95C (the plate 95F) collides with the stopper 96 can be buffered. Thus, even if the approach-avoiding moving body 95C is moved at high speed, the stopper 96 and the approach-avoiding moving body 95C do not bounce back, and the positions of the first action control body 93 and the second action control body 94 can be switched at appropriate positions.

[0046] In addition, the generation of the collision sound of the approach-avoiding moving body 95C and the stopper 96 can also be prevented. The buffer 97 is formed to have a width dimension larger than the sliding movement width (reciprocating movement amplitude in the length direction of the shaft 91) in the length direction of the shaft 91, and therefore, the buffer 97 installed on the approach-avoiding moving body 95C can collide with the guide 92 of the shaft 91 before the approach-avoiding moving body 95C collides with the stopper 96.

[0047] In addition, the buffer 97 is installed on the inner side of the main body 95A in a configuration that surrounds the periphery of the fluid inlet 95B. In addition, the buffer 97 is installed so as to protrude inwardly with respect to the inner side surface of the main body 95A, and therefore, when the approach-avoiding moving body 95C approaches the main body 95A, the approach-avoiding moving body 95C (the plate 95F) collides with the buffer 97 before colliding with the inner side surface of the main body 95A, and therefore, the stopper 96 does not bounce back from the inner side surface of the main body 95A, and can immediately become in the abutting state, and even if the sliding movement in the length direction of the shaft 91 is speeded up, the stopper 96 can be quickly positioned at the predetermined position.

[0048] If the main body 95A of the shaft driving section 95 on the right side in the drawing is supplied with compressed air as above, the switching driving section 90 becomes the state shown in FIG. 8. At this time, the right end of the shaft 91 abuts against the main body 95A (the plate 95F) of the shaft driving section 95 on the right side in the drawing and the left end of the shaft 91 abuts against the main body 95A of the shaft driving section 95 on the left side in the drawing. Figures 5 to 7 Figure 5 Figure 6 Figure 7 ​​​As shown, the position of the second action control body 94 formed on the shaft 91 moves in the length direction of the shaft 91 relative to the position of the first action control body 93 mounted to the upper die set 26, and the position of the first action control body 93 deviates from the position of the second action control body 94 in the length direction of the shaft 91. In this state, the first action control body 93 is lowered by the press mechanism 24 to a position deviated laterally from the second action control body 94, and the first action control body 93 idles relative to the second action control body 94. Therefore, the lifting action of the press mechanism 24 is not transmitted from the first action control body 93 to the second action control body 94, and the upper die 23B becomes a state in which the top dead center position is maintained by the upward force of the force applying member 28. Thus, the press working of the special die 23 to the metal band-shaped body 310 is not performed, and the metal band-shaped body 310 is merely passed through between the special dies 23.

[0049] In the present embodiment, the action control section 200 causes the compressed air to be supplied alternately to the shaft driving section 95 on the left end portion side in the length direction of the shaft 91 and the shaft driving section 95 on the right end portion side in the length direction of the shaft 91, and causes the shaft 91 to reciprocate in the length direction. By providing the buffer 97 to the collision portion between the shaft 91 as the moving body and the main body 95A as the fixed body as in the switching driving section 90 in the present embodiment, even if the shaft 91 is caused to reciprocate at high speed, the shaft 91 does not rebound relative to the main body 95A. That is, it is preferable that the switching of the processing state of the special die 23 to the metal band-shaped body 310 to the non-processing state can be reliably and speeded up.

[0050] In addition, as in the present embodiment, by adopting a manner in which a plurality of fluid inlet ports 95B are provided to the shaft driving section 95 and a plurality of piston rods 95E are connected by the plate 95F, it is possible to increase the pushing force of the moving body 95C to the shaft 91, and it is also preferable that the reciprocation in the length direction of the shaft 91 can be speeded up.

[0051] (Second Embodiment) Figure 8 is a plan view showing only a main portion of the switching driving section 90 in the second embodiment, and shows a state in which the special die 23 performs press working to the metal band-shaped body 310. For structures in the present embodiment that are the same as those explained in the first embodiment, the same reference numerals as those used in the first embodiment are used to show the structures in Figure 8 In the present embodiment, the structure of the fin manufacturing device 100 for heat exchangers is the same as that of the fin manufacturing device 100 for heat exchangers in Figure 1The illustrated structure is the same. The shaft driving portion 95 in this embodiment is a manner in which it does not have a structure of a close and away movement body 95C that performs close and away movement with respect to the main body 95A, and a required length range of both end portions of the shaft 91 is inserted in a flow path 95D that is opened in the inner side surface of the main body 95A, and the shaft 91 is directly made to reciprocate in the length direction of the shaft 91 by compressed air. That is, the basic structure is the same as Figure 9 The basic structure of the shaft driving portion 95 in the related art illustrated above is the same.

[0052] In the shaft driving portion 95 in this embodiment, a buffer 97 is attached to the outer side surface of the second operation control body 94 that is disposed at both end portions in the length direction of the shaft 91 that is disposed in a state of contacting the inner side surface of the main body 95A or the inner side surface of the stopper 96. The buffer 97 in this embodiment is formed in a width dimension that is larger than the sliding width (reciprocation amplitude) in the length direction of the shaft 91. Thus, when the shaft 91 is made to slide and move in the length direction by the operation control portion 200 making the compressed air supplied to the shaft driving portion 95, the stopper 96 that is formed at the front end portion of the shaft 91 at the movement destination does not collide with the main body 95A at the movement destination, and the buffer 97 collides with the inner side surface of the main body 95A and absorbs the impact. Thereby, the stopper 96 that is attached to the front end portion at the movement destination of the shaft 91 that is made to slide and move in the length direction does not directly collide with the main body 95A and bounce back, and the shaft 91 after the movement is immediately positioned at the predetermined position. Thus, even if the switching speed of the processing state and the non-processing state of the metal band-shaped body 310 by the special mold 23 is made high speed, appropriate switching operation can be achieved. In addition, generation of the collision sound of the stopper 96 and the main body 95A can be prevented.

[0053] The above has explained the present application in detail based on the embodiments, but the present application is not limited to the above embodiments. For example, the shaft 91 can be provided as two, and a manner in which one or three or more shafts 91 are used can also be adopted.

[0054] Further, a mode is exemplified in which the guide body 92 in the above embodiment is provided upright in the special mold 23 (the special upper mold 23B), the shaft 91 is moved in sliding in the guide body 92, and the lowering action of the press mechanism 24 is transmitted to the special upper mold 23B by the 1st action control body 93 with the aid of the 2nd action control body 94, but is not limited to this mode. The guide body 92 in the above embodiment is provided in order to prevent the 2nd action control body 94 provided to the shaft 91 from rotating around the axis of the shaft 91 and to transmit the press action of the press mechanism 24 to the special upper mold 23B. Thus, the provision of the guide body 92 can be omitted by adopting a mode in which the lower end portion of the 2nd action control body 94 mounted to the shaft 91 is provided in a state of substantially abutting against the upper surface of the special upper mold 23B (the 2nd action control body 94 is preferably always in abutment against the upper surface of the special upper mold 23B), and a convex portion or a concave portion protruding in the radial direction is formed along the length direction at both ends of the shaft 91, and a fitting portion fitting with the convex portion or the concave portion formed in the shaft 91 is formed in the range of a desired length from the opening portion of the flow path 95D of the inner side surface of the main body 95A.

[0055] Further, in the 1st embodiment, a mode is exemplified in which the cushion member 97 is provided on the inner side of the plate 95F which is a part of the approach-escape body 95C, but the present application is not limited to this mode. A mode in which the cushion member 97 is mounted to the outer side surface of the 2nd action control body 94 which is provided adjacent to the stopper 96 at both ends in the length direction of the shaft 91 can also be adopted.

[0056] Further, a mode in which the modifications described in the above embodiments are appropriately combined can also be adopted.

Claims

1. A fin manufacturing apparatus for heat exchangers, characterized in that, The heat exchanger fin manufacturing apparatus includes: The first mold and the second mold are used to process fin manufacturing materials into fins for heat exchangers; A stamping mechanism that drives the first die and the second die; and The switching drive unit switches the processing based on the second mold at any time in response to the operation of the stamping mechanism. The switching drive unit has: axis; The first action control unit is disposed at at least one location in the stamping mechanism and is actuated by the stamping action of the stamping mechanism; The second action control body is disposed in the shaft at a position opposite to the first action control body, and transmits the stamping action of the stamping mechanism to the second mold by abutting against the first action control body. A shaft drive unit, wherein both ends of the shaft are inserted into the shaft drive unit, and the shaft drive unit causes the shaft to reciprocate in the length direction; Stops are disposed at both ends of the shaft and positioned in a working position and a non-working position. The working position is when the second motion control body is positioned opposite the first motion control body, thus enabling the second mold to process the fin manufacturing material. The non-working position is when the second motion control body shifts in the length direction from the position of the first motion control body, becoming a non-processing position where the second mold does not process the fin manufacturing material. A buffer element is disposed at the portion where each of the stops abuts against each of the shaft drive units.

2. The heat exchanger fin manufacturing apparatus according to claim 1, characterized in that, The buffer is formed with a width dimension that is larger than the reciprocating movement amplitude in the length direction of each of the axes.

3. A fin manufacturing apparatus for heat exchangers, characterized in that, The heat exchanger fin manufacturing apparatus includes: The first mold and the second mold are used to process fin manufacturing materials into fins for heat exchangers; A stamping mechanism that drives the first die and the second die; and The switching drive unit switches the processing based on the second mold at any time in response to the operation of the stamping mechanism. The switching drive unit has: axis; The first action control unit is disposed at at least one location in the stamping mechanism and is actuated by the stamping action of the stamping mechanism; The second action control body is disposed in the shaft at a position opposite to the first action control body, and transmits the stamping action of the stamping mechanism to the second mold by abutting against the first action control body. A shaft drive unit, which is disposed at both ends of the shaft, has a reciprocating motion body that causes the shaft to reciprocate in the length direction by moving closer and further away relative to the main body; A stop member, disposed adjacent to the approaching and distancing moving body at both ends of the shaft, is positioned in a working position and a non-working position. The working position is such that the second motion control body is positioned opposite the first motion control body, thus forming a processing state where the second mold processes the fin manufacturing material. The non-working position is such that when the second motion control body shifts in the length direction from the position of the first motion control body, it forms a non-processing state where the second mold does not process the fin manufacturing material. Buffer members are respectively disposed on the portions of the stops that abut against the approaching and disengaging moving bodies and the portions of the approaching and disengaging moving bodies that abut against the main body of the shaft drive unit.

4. The heat exchanger fin manufacturing apparatus according to claim 3, characterized in that, The buffer is formed with a width dimension that is larger than the reciprocating movement amplitude in the length direction of the shaft.

5. The heat exchanger fin manufacturing apparatus according to claim 3 or 4, characterized in that, The buffer member disposed at the portion of the main body of the approach-away moving body and each of the shaft drive units that abuts against the main body is disposed in a state that protrudes from the opposing surface of the main body opposite to the approach-away moving body side.

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