Component mounting system

Abstract

A component mounting system is provided with: a component mounting device having a component supply unit for arranging, in an arrangement direction, replacement components including at least a component container for accommodating a plurality of components; and a replacement device for replacing a replacement element detachably mounted on the component supply unit, the replacement device being provided with: an arrangement direction moving unit provided so as to be movable in the arrangement direction with respect to the component mounting device; a housing provided in the arrangement direction moving part and having an internal space capable of accommodating the plurality of replaceable elements in a state in which the replaceable elements are arranged side by side in the arrangement direction; and a plurality of holding parts capable of holding the replacement elements accommodated in the housing, and the replacement device performs at least one of an operation of holding the replacement elements in the plurality of holding parts and collecting the plurality of replacement elements from the component supply part to the housing at the same time, and an operation of equipping the plurality of replacement elements from the housing to the component supply part at the same time.

Description

[0001] This application is a divisional application of an application with the application number 202210782863.3 and the application name "Component Mounting System" and the filing date of June 12, 2018. TECHNICAL FIELD

[0002] The present specification relates to a replacement device capable of automatically replacing a replacement component detachably equipped to a component mounting device. BACKGROUND

[0003] A technology of implementing a substrate work on a substrate to which a printed wiring is applied to mass-produce a circuit substrate is becoming widespread. A substrate work device that implements a substrate work includes a component mounting device that implements a mounting work of a component. As a representative example of a component supply device provided to the component mounting device, there is a tape feeder that supplies a component using a tape. In recent years, in order to save the trouble of component supply, a technology of automatically replacing the tape feeder or a tape reel on which the tape is wound has been developed. A technology example related to such a replacement device is disclosed in Patent Literatures 1 and 2.

[0004] Patent Literature 1 discloses a cassette feeder replacement system of a component mounting device that includes: a suction work area in which a plurality of cassette feeders are arranged side by side; a feeder storage area in which a used cassette feeder and a new cassette feeder are stored; and a replacement robot that replaces the cassette feeders between the suction work area and the feeder storage area. According to this, the replacement work of the cassette feeders can be automated, and the replacement of the cassette feeders between the areas can be smoothly performed.

[0005] In addition, Patent Literature 2 discloses a component mounting line that includes: a unit storage library that stores a plurality of component supply units; a unit replacement device that replaces the component supply units mounted to a plurality of component mounting devices and the component supply units stored in the unit storage library; and a control device that controls the unit replacement device. According to this, the component supply units used in any of the component mounting devices can be carried in and out in association with replenishment and recovery by the unit storage library, and thus the convenience of use is good.

[0006] Prior Art Documents

[0007] Patent Literature

[0008] Patent Literature 1: International Publication No. 2014 / 118995

[0009] Patent Literature 2: International Publication No. 2017 / 033268 SUMMARY

[0010] Problems to be Solved by the Invention

[0011] However, in the technology example of the changing device of Patent Literatures 1 and 2, the replacement of the replacement elements (the cartridge feeder, the component supply unit) of the component mounting device is performed one by one. For example, in Patent Literature 1, the cartridge feeder in which the components are consumed due to the mounting work is recovered from the suction work area, is transported and housed to the feeder storage area, and thereafter, a new cartridge feeder is pulled out from the feeder storage area, is transported and set to the suction work area. During the replacement work, the mounting work is interrupted, and non-productive time in which the substrate cannot be produced occurs.

[0012] In addition, in a case where the changeover work in which the kind of the substrate to be produced is changed is performed frequently, the replacement of a plurality of replacement elements of the component mounting device is required, and the non-productive time tends to be prolonged. It is strongly desired to shorten such non-productive time and to improve the production efficiency of the substrate.

[0013] In the present specification, the problem to be solved is to provide a changing device capable of shortening the non-productive time of a component mounting device and improving the production efficiency of a substrate.

[0014] Technical Solution for Solving the Problem

[0015] The present specification discloses a changing device that replaces a replacement element that is detachably attached to a component supply part of a component mounting device, the component mounting device having the component supply part in which at least a component container that accommodates a plurality of components is arranged in an arrangement direction, the changing device including: an arrangement direction moving part that is arranged so as to be movable in the arrangement direction with respect to the component mounting device; a plurality of detachment direction moving parts that are arranged in the arrangement direction moving part so as to be independently movable in a detachment direction of the replacement element with respect to the arrangement direction moving part; a holding part that is provided at least one for each of the detachment direction moving parts and that is capable of holding the replacement element; an arrangement direction drive device that moves the arrangement direction moving part in the arrangement direction; and a detachment direction drive device that independently moves the plurality of detachment direction moving parts in the detachment direction.

[0016] Further, the present specification discloses a replacement device that replaces a replacement component that is detachably attached to a component supply part of a component mounting device, the component mounting device having the component supply part in which a plurality of components are housed and the replacement component is arranged in a row direction at a predetermined pitch or a pitch that is an integer multiple of the predetermined pitch, the replacement device including: a row direction moving part that is arranged so as to be movable in the row direction with respect to the component mounting device; a detachment direction moving part that is arranged in the row direction moving part so as to be movable in a detachment direction of the replacement component with respect to the row direction moving part; a plurality of holding parts that are arranged adjacent to each other in the row direction in the detachment direction moving part at the predetermined pitch or the pitch that is the integer multiple of the predetermined pitch, and that are capable of holding the replacement component; a row direction driving device that moves the row direction moving part in the row direction; and a detachment direction driving device that moves the detachment direction moving part in the detachment direction.

[0017] Effects of the Invention

[0018] The replacement device disclosed in the present specification has a plurality of holding parts, and thus is capable of simultaneously handling a plurality of replacement components. Therefore, compared to a conventional structure having one holding part, non-production time required for replacement of the replacement component is shortened, the ratio of production time of the component mounting device is increased, and thus the production efficiency of a substrate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a perspective view showing a structure example of a component mounting system to which the replacement device of the embodiment is applied.

[0020] Figure 2 FIG. 4 is a side view of a tape feeder that corresponds to the replacement component.

[0021] Figure 3 FIG. 6 is a side view showing a structure in the vicinity of a locking part of the tape feeder and an internal structure of a detachment direction moving part.

[0022] Figure 4 FIG. 7 is a perspective view showing an internal structure of a replacement part.

[0023] Figure 5 FIG. 8 is a partial enlarged perspective view in which the vicinity of a holding surface of two detachment direction moving parts is juxtaposed and enlarged.

[0024] Figure 6 FIG. 9 is a plan view schematically showing a holding method of a standard tape feeder and a large tape feeder.

[0025] Figure 7 FIG. 10 is a plan view schematically showing a holding method of an extra large tape feeder.

[0026] Figure 8 is a side view of the dismounting direction moving section showing the holding state after the holding section and the unlocking section have operated.

[0027] Figure 9 is a perspective view showing the state in which the exchange section accommodates the tape feeder.

[0028] Figure 10 is a plan view of the exchange section schematically showing the state before the recovery operation is started in the step example of the exchange operation.

[0029] Figure 11 is a plan view of the exchange section schematically showing the state in which the recovery operation is ended.

[0030] Figure 12 is a plan view of the exchange section schematically showing the state before the equipment operation is started.

[0031] Figure 13 is a plan view of the exchange section schematically showing the state in which the equipment operation is ended.

[0032] Figure 14 is a diagram conceptually showing the exchange device of the first application example of the embodiment in which the embodiment is simplified.

[0033] Figure 15 is a diagram conceptually showing the exchange device of the second application example of the embodiment in which the embodiment is simplified. DETAILED DESCRIPTION

[0034] 1. Structure of component mounting system 9 to which exchange device 1 of the embodiment is applied

[0035] First, a structure example of component mounting system 9 to which exchange device 1 of the embodiment is applied is described. Figure 1 is a perspective view showing the structure example of component mounting system 9 to which exchange device 1 of the embodiment is applied. As shown in the drawing, front, back, left and right of component mounting system 9 are defined for convenience. Component mounting system 9 is constituted by arranging a plurality of substrate work devices in the left-right direction. That is, solder printing device 91, printing inspection device 92, first component mounting device 93, second component mounting device 94, third component mounting device 95, a substrate appearance inspection device not shown and a reflow soldering device not shown are arranged from the left side to the right side. Figure 1

[0036] ​Each substrate handling device performs a predetermined operation on the substrate, i.e., substrate handling. Specifically, solder printing device 91 prints paste-like solder onto the substrate in a predetermined pattern. Printing inspection device 92 photographs and inspects the solder printing status of the substrate. First component mounting device 93, second component mounting device 94, and third component mounting device 95 pick up components from component supply unit 9A and mount them onto the solder on the substrate. Substrate appearance inspection device photographs the components mounted on the substrate and inspects their appearance. Reflow soldering device ensures component soldering by heating and cooling the solder. Substrate handling is not limited to the above-mentioned operations and also includes various ancillary operations. For example, substrate handling also includes: substrate loading and unloading operations; positioning operations; and operations that photograph the substrate and components and confirm their position and orientation.

[0037] The first component mounting device 93, the second component mounting device 94, and the third component mounting device 95 have the same structure. The component mounting devices (93, 94, 95) include a component supply section 9A, a pre-feeder storage section 9B, and... Figure 1 The substrate handling device and component transfer device are not shown.

[0038] The component supply unit 9A is positioned at approximately the middle height of the front side of the machine tool 99. The component supply unit 9A has multiple slots that extend in the front-rear direction and are spaced at predetermined intervals Ps (see reference). Figures 5-7 They are formed parallel to each other. Each slot in the component supply section 9A is equipped with a belt feeder 8. In other words, multiple belt feeders 8 are arranged in parallel. Figure 1 They are arranged side by side in the left and right directions.

[0039] The belt feeder 8 is a component supply device that is detachably mounted on the component supply section 9A, and is equivalent to a replaceable element. Furthermore, Figure 1 The left and right directions become the arrangement direction of the elements to be replaced (hereinafter, it is simply referred to as the arrangement direction). Figure 1 The front-to-back direction becomes the disassembly and assembly direction of the replacement element (hereinafter, it is simply referred to as the disassembly and assembly direction). The belt feeder 8 is interchangeable in the first element mounting device 93, the second element mounting device 94, and the third element mounting device 95.

[0040] The pre-feeder storage section 9B is located below the component supply section 9A on the front side of the machine tool 99. The pre-feeder storage section 9B also has multiple slots that extend in the front-rear direction and are formed parallel to each other at predetermined intervals Ps. Ready-to-use and used-out belt feeders 8 are arranged and temporarily stored in the slots of the pre-feeder storage section 9B. The substrate handling device performs substrate loading, positioning, and unloading. The component transfer device uses component mounting tools such as suction nozzles to pick up components from the component supply section 9A and mount them onto the substrate.

[0041] In addition, the component mounting system 9 is provided with a feeder storage device 96, a mounting line management device 97, and the replacement device 1 of the embodiment. The feeder storage device 96 is adjacent to the left side of the solder printing device 91 and is disposed at the same height as the component supply portion 9A of the component mounting device (93, 94, 95). The feeder storage device 96 also has a plurality of slots that extend in the front-rear direction and are formed in parallel with each other at a predetermined pitch Ps. In the slots of the feeder storage device 96, the tape feeders 8 that are ready for use and the tape feeders 8 that have finished being used are stored in a row.

[0042] The mounting line management device 97 is disposed adjacent to the left side of the feeder storage device 96. The mounting line management device 97 is communicatively connected to a plurality of substrate processing devices. The mounting line management device 97 manages job data in which the contents of the substrate processing are recorded differently for each substrate type. The mounting line management device 97 sends each job data to the plurality of substrate processing devices based on a production plan. The mounting line management device 97 also monitors the operation status of the plurality of substrate processing devices.

[0043] 2. Configuration of the tape feeder 8

[0044] Next, the configuration of the tape feeder 8 will be described. Figure 2 is a side view of the tape feeder 8 that corresponds to the replacement element. The tape feeder 8 is assembled with various components in a frame 81 including side plates and is configured to be relatively thin in the width direction. The tape feeder 8 has the frame 81, a tape reel housing frame 82, a housing plate 83, an opening and closing plate 84, a tape feed portion 85, a component supply position 86, a feeder control portion 87, a protrusion 88, an upper positioning pin 89, a lower positioning pin 8A, a connector 8B, and a locking portion 8C, and the like.

[0045] The tape reel housing frame 82 is a plurality of frame components that form a large circular internal space in the substantially center of the frame 81. The tape reel housing frame 82 houses the tape reel TR in the internal space so as to be freely rotatable. The housing plate 83 is installed near the lower portion of the tape reel housing frame 82. The separation distance between the housing plate 83 and the side plate of the frame 81 is set to be slightly larger than the thickness of the tape reel TR. The housing plate 83 prevents the tape reel TR from coming off.

[0046] The opening and closing plate 84 is installed at a position higher than the middle height of the tape reel housing frame 82. The separation distance between the opening and closing plate 84 and the side plate of the frame 81 is also set to be slightly larger than the thickness of the tape reel TR. Furthermore, the two front and rear positions 841 of the upper portion of the opening and closing plate 84 are supported by the frame 81 and are open upward. By opening the opening and closing plate 84, the replacement of the tape reel TR can be performed. The tape reel TR has a tape wound thereon that stores a plurality of components. The tape reel TR corresponds to a component housing container that houses a plurality of components.

[0047] A tape feeding section 85 is provided at the front upper portion of the frame 81. The tape feeding section 85 pulls out the tape from the tape reel TR and feeds it to an element supply position 86 provided at the front portion of the upper surface of the frame 81. The tape feeding section 85 is composed of a tape guide gear having teeth that fit into the transport holes of the tape and a motor or the like that rotates the tape guide gear.

[0048] A feeder control section 87 is provided at the rear lower portion of the frame 81. The feeder control section 87 controls the tape feeding section 85 and also monitors the state of the lock section 8C. The feeder control section 87 is communicatively connected to the control device on the main body side of the component mounting apparatus (93, 94, 95) via the connector 8B.

[0049] A protrusion 88 is provided at the bottom surface of the frame 81. The protrusion 88 also fits into the slot of any one of the element supply section 9A, the preliminary feeder storage section 9B, and the feeder storage device 96. Furthermore, the protrusion 88 also fits into the slot 314 of the housing 31 of the exchange section 3 of the exchange device 1 described later. As a result, the tape feeder 8 is guided by the slot 314 at the time of exchange and is transferred from the exchange device 1 to the element supply section 9A or the like or is transferred in the opposite direction.

[0050] An upper positioning pin 89 and a lower positioning pin 8A are provided vertically at the upper portion of the front surface of the frame 81. The upper positioning pin 89 and the lower positioning pin 8A fit into the positioning holes of the element supply section 9A to position the tape feeder 8. The connector 8B is provided between the upper positioning pin 89 and the lower positioning pin 8A. The connector 8B serves to supply power to the tape feeder 8 and to communicatively connect it. When the tape feeder 8 is positioned, the connector 8B automatically fits into the receiving side connector of the element supply section 9A.

[0051] A lock section 8C is provided at the rear upper portion of the frame 81. Figure 3 is a side view that shows the structure in the vicinity of the lock section 8C of the tape feeder 8 and the inside of the disassembly direction moving section 32 (described later) of the exchange device 1. The lock section 8C is composed of a lock pin 8D, a lock spring 8E, a lock operation member 8F, a lock sensor 8L, and the like. The lock pin 8D is a cylindrical member and is held by the frame 81 so as to be vertically movable. The lock spring 8E is formed in a coil shape and is disposed inside the lock pin 8D. One end of the lock spring 8E is coupled to the frame 81 and the other end is coupled to the lock pin 8D.

[0052] The lock spring 8E exerts an upward force on the lock pin 8D. In the tape feeder 8 equipped in the element supply section 9A, the lock pin 8D that has risen due to the force protrudes from the upper surface of the frame 81 and fits into the lock hole 9H of the element supply section 9A. As a result, the lock section 8C becomes a locked state and prevents the tape feeder 8 from being detached or shaken.

[0053] The locking operating component 8F is a Y-shaped component with a swing fulcrum 8G. The swing fulcrum 8G is supported by the frame 81 in a swingable manner. The actuating arm 8H extending forward from the swing fulcrum 8G is engaged with the lower end of the locking pin 8D. The unlocking arm 8J extending upward from the swing fulcrum 8G is pressed forward by the direct actuating component 61, described later. The manual arm 8K extending rearward from the swing fulcrum 8G protrudes from the rear surface of the frame 81. The manual arm 8K is pressed upward by the operator.

[0054] By unlocking arm 8J or manually pressing arm 8K, the operating component 8F is locked around the swing fulcrum 8G. Figure 3 The mechanism swings clockwise. At this time, the actuating arm 8H overcomes the locking spring 8E, causing the locking pin 8D to descend. Thus, the locking pin 8D is pulled out of the locking hole 9H. Consequently, the locking part 8C transitions from the locked state to the unlocked state (see reference). Figure 8 Additionally, the belt feeder 8 is in a state where it can be pulled out of the slot.

[0055] The locking sensor 8L detects the state of the locking part 8C, i.e., whether it is locked or unlocked. The locking sensor 8L outputs the detection result to the feeder control unit 87 via the output cable 8M. In the belt feeder 8 equipped in the component supply unit 9A, the feeder control unit 87 does not continue the component feeding operation when the locking part 8C is unlocked. The reason for this is that the belt feeder 8 is judged to be in an improper mounting position.

[0056] In addition, such as Figure 3 As shown, a retaining plate 8N is provided vertically on the rear side of the locking part 8C. The retaining plate 8N is held by the retaining part 5. The retaining plate 8N has a retaining hole 8P in the center. The retaining hole 8P is located at the same height (predetermined height) as the connector 8B. When viewed from the rear, the unlocking arm 8J of the locking operation member 8F is located on the extension line of the retaining hole 8P.

[0057] The belt feeders 8 and tape reels TR are prepared in various thicknesses, with different width dimensions in the arrangement direction. For the standard belt feeder 8X, the width dimension is less than a predetermined pitch Ps, and they are arranged side-by-side in adjacent slots. In other words, the standard belt feeders 8X are arranged in the arrangement direction with a predetermined pitch Ps (see reference). Figure 6 ).

[0058] For large belt feeders 8Y with a width greater than but less than twice the predetermined spacing Ps, two slots are used for installation. In other words, large belt feeders 8Y are arranged in the arrangement direction at a spacing of twice the predetermined spacing Ps (see reference). Figure 6Furthermore, for ultra-large belt feeders 8Z with a width greater than twice the predetermined spacing Ps, they occupy three or more slots for installation. In other words, ultra-large belt feeders 8Z are arranged in the arrangement direction at a spacing of more than three times the predetermined spacing Ps (see reference). Figure 7 ).

[0059] 3. Structure of the replacement device 1 in the implementation method

[0060] The following is a description of the replacement device 1 in the embodiment. The replacement device 1 automatically replaces the belt feeder 8. Specifically, the replacement device 1 replaces the belt feeder 8 between the component supply section 9A and the pre-feeder storage section 9B of the component mounting device (93, 94, 95). In addition, the replacement device 1 moves between the component mounting device (93, 94, 95) and the feeder storage device 96, and transports and replaces the belt feeder 8.

[0061] like Figure 1 As shown, the replacement device 1 comprises an arrangement direction moving part 2, an arrangement direction driving device 20, a replacement part 3, and various components disposed inside the replacement part 3. The arrangement direction moving part 2 is configured to move in the arrangement direction relative to the component mounting devices (93, 94, 95). The arrangement direction moving part 2 is a longitudinally elongated box-shaped component that opens at the front. The arrangement direction driving device 20 moves the arrangement direction moving part 2 in the arrangement direction. The arrangement direction driving device 20 comprises a track part disposed on the stationary side, an engaging part disposed on the moving side and engaging with the track part in a movable manner, and a drive source for generating power for movement.

[0062] The middle guide rail 21 and the lower guide rail 22, corresponding to the track section, are respectively provided on the rear surface of the machine base 99 of the multiple substrate handling devices and the rear surface of the feeder storage device 96. The middle guide rail 21 and the lower guide rail 22 extend in the arrangement direction. The height position of the middle guide rail 21 is uniformly located between the component supply section 9A and the pre-feeder storage section 9B. The height position of the lower guide rail 22 is uniformly located below the pre-feeder storage section 9B. Thus, the multiple middle guide rails 21 and the multiple lower guide rails 22 form two parallel track sections that run continuously from the feeder storage device 96 to the third component mounting device 95.

[0063] The middle-layer traveling section 23 and the lower-layer traveling section 24, which correspond to the engaging section, are respectively disposed on the left and right sides of the front side of the aligning direction moving section 2. The middle-layer traveling section 23 is movably engaged with the middle-layer guide rail 21, and the lower-layer traveling section 24 is movably engaged with the lower-layer guide rail 22. The middle-layer traveling section 23 also includes a drive source for generating power for movement. Thus, the aligning direction moving section 2 is mounted on the middle-layer guide rail 21 and the lower-layer guide rail 22, and moves in the aligning direction.

[0064] Further, the arrangement direction moving section 2 has a non-contact power receiving section 25 at a height position between the middle layer walking section 23 and the lower layer walking section 24, and at a height position that does not obstruct replacement of the tape feeders 8. The non-contact power receiving section 25 receives power in a non-contact manner from a non-contact power feeding section provided at a corresponding height position of the plurality of pair substrate processing devices.

[0065] In addition, the arrangement direction moving section 2 has a lift driving section 26 and a replacement section 3 inside the box shape. The lift driving section 26 drives the replacement section 3 up and down from a height of the component supply section 9A to a height of the spare feeder storage section 9B. As the lift driving section 26, a ball screw feed mechanism can be exemplified, but is not limited thereto. Figure 4 is a perspective view showing the structure of the inside of the replacement section 3. Figure 4 In the figure, the side plate and the like of the front side of the housing 31 are omitted.

[0066] The replacement section 3 is composed of the housing 31, two dismounting direction moving sections 32, and two dismounting direction driving devices 4. The housing 31 has an opening portion 311 on the front side that allows four standard tape feeders 8X arranged adjacent to each other to be taken in and out in a side-by-side state. The housing 31 also has an internal space that can accommodate the four standard tape feeders 8X. In addition, four insertion grooves 314 are engraved in the floor 313 of the housing 31 in parallel with each other at a predetermined pitch Ps. Further, a guide roller 315 is provided on the front side of each insertion groove 314 of the floor 313. Thus, for the tape feeder 8, the protrusion 88 is guided by the insertion groove 314 and taken in and out via the opening portion 311 and the guide roller 315.

[0067] The two dismounting direction moving sections 32 are provided in a manner that they can be independently moved in the dismounting direction with respect to the arrangement direction moving section 2. The two dismounting direction moving sections 32 are provided inside the housing 31 and arranged apart in the arrangement direction. The dismounting direction moving section 32 has a holding surface 33 on the upper portion of the front side and an abutting surface 34 on the lower portion of the front side. The dismounting direction moving section 32 holds the holding plate 8N of the rear surface upper portion of the tape feeder 8 by the holding surface 33. At this time, the abutting surface 34 abuts against the rear surface lower portion of the tape feeder 8. Further, a connector can also be provided on the abutting surface 34 and connected to the feeder control section 87 of the tape feeder 8.

[0068] In order to supply power to the moving dismounting direction moving section 32, a power supply cable 35 having flexibility is provided on the upper side of the dismounting direction moving section 32. The power supply cable 35 is connected to a power supply terminal 36 on the upper portion of the dismounting direction moving section 32.

[0069] The dismounting direction driving device 4 moves the two dismounting direction moving sections 32 independently of each other in the dismounting direction. The dismounting direction driving device 4 is provided for each dismounting direction moving section 32. The dismounting direction driving device 4 is composed of the upper rail 41, the lower rail 42, the driving motor 43, the fixed pulley 44, the driving belt 45, and the like. Figure 3 The dismounting direction driving device 4 that drives the dismounting direction moving section 32 on the paper deep side is shown.

[0070] The upper rail 41 and the lower rail 42 are provided to the side plate 312 of the housing 31. The upper rail 41 and the lower rail 42 are divided vertically and are parallel, and extend in the dismounting direction. The driving motor 43 is disposed in the rear portion inside the housing 31. A reduction mechanism is attached to an output shaft that protrudes from the driving motor 43 toward the paper deep side. The fixed pulley 44 is disposed in the front portion of the side plate 312. The annular driving belt 45 is horizontally erected between the output portion of the reduction mechanism and the fixed pulley 44, and is able to rotate.

[0071] The dismounting direction moving section 32 is mounted to the upper rail 41 and the lower rail 42. The dismounting direction moving section 32 is driven by the rotation of the driving belt 45, and moves in the dismounting direction in the internal space of the exchange section 3. The dismounting direction driving device 4 moves the tape feeder 8 held by the holding surface 33 together with the dismounting direction moving section 32. Of course, the dismounting direction driving device 4 can also move only the dismounting direction moving section 32.

[0072] The dismounting direction driving device 4 that drives the dismounting direction moving section 32 on the paper deep side is shown. Figure 9 The fixed pulley 48 and the driving belt 49 provided to the side plate on the paper deep side are also disposed at the corresponding higher position. By reversely disposing the two dismounting direction driving devices 4 at different heights like this, the thinness of the exchange section 3 and the arrangement direction moving section 2 is achieved.

[0073] The internal structure of the dismounting direction moving section 32 is further described. Two sets of the holding section 5, the unlocking section 6, the common driving section 7, and the control section 79 are provided to each of the two dismounting direction moving sections 32. The two sets are the same structure, are disposed side by side in the arrangement direction, and act independently of each other. Hereinafter, the structure of one set is described in detail. The holding section 5, the unlocking section 6, the common driving section 7, and the control section 79 are mounted to the main body section 37 that extends in the vertical direction as a part of the dismounting direction moving section 32.

[0074] The common driving section 7 causes the holding section 5 and the unlocking section 6 to act. As Figure 3As shown, the common drive section 7 is composed of a stepping motor 71, a first gear 73, a second gear 76, and a swing member 77. The stepping motor 71 is fixed to the vicinity of the lower portion of the main body section 37. The stepping motor 71 switches the forward rotation and the reverse rotation according to the instruction from the control section 79, and rotates by the instructed rotation amount. A small-toothed output gear 72 is provided to the output shaft of the stepping motor 71.

[0075] The first gear 73 is disposed at a position higher than the stepping motor 71, and is rotatably supported by the main body section 37. The first gear 73 is composed of a large gear 74 having a relatively large number of teeth and a small gear 75 having a relatively small number of teeth, which are coaxially overlapped. Figure 4 The small gear 75 is located at the back side of the large gear 74 and is not visible. The large gear 74 is engaged with the output gear 72.

[0076] The second gear 76 is disposed at a position higher than the first gear 73, and is rotatably supported by the main body section 37. The second gear 76 has a larger number of teeth than the small gear 75, and is engaged with the small gear 75. The swing member 77 is provided to the vicinity of the upper portion of the second gear 76. The swing member 77 has a swing pin 78 at a position outside the outer periphery of the second gear 76. The output gear 72, the first gear 73, and the second gear 76 constitute a speed reduction mechanism. Thus, the forward rotation and the reverse rotation of the stepping motor 71 are converted into the swinging of the swing pin 78 in the dismounting direction.

[0077] The unlocking section 6 can release the lock of the lock section 8C that prevents the detachment of the tape feeder 8 equipped to the component supply section 9A. The unlocking section 6 is composed of a direct action member 61 and a manual lever 67, and the like. The direct action member 61 is a rod-shaped member that is long in the dismounting direction. The direct action member 61 has an elongated hole 62 that is long in the vertical direction at substantially the middle position in the length direction. The swing pin 78 is loosely inserted into this elongated hole 62. Thus, the swinging of the swing pin 78 that traces a circular arc is converted into the straight movement of the direct action member 61 in the dismounting direction. In addition, the direct action member 61 has an unlocking operation section 63 that releases the lock of the lock section 8C at the front end on the front side.

[0078] Further, the direct action member 61 has intermediate drive pins 64 on the front and back sides across the elongated hole 62. The two intermediate drive pins 64 are loosely inserted into the elongated holes 53 of the slide plate 51 described later. Thus, the horizontal state of the direct action member 61 is maintained. Further, the direct action member 61 has indirect drive protrusions 65 on the upper and lower sides between the intermediate drive pins 64 on the front side and the unlocking operation section 63. The upper and lower pair of indirect drive protrusions 65 drive the collets 55 of the holding section 5 described later.

[0079] The manual lever 67 extends upwards from the rear end of the direct-acting component 61. The manual lever 67 is operated by the operator in the assembly / disassembly direction and can manually operate the direct-acting component 61 in case of a malfunction of the common drive unit 7. A position mark 68 is provided on the underside of the manual lever 67. The position mark 68 operates integrally with the direct-acting component 61, indicating the position of the direct-acting component 61. A reference position sensor 6A for detecting the position mark 68 and a holding position sensor 6B are provided on the main body 37.

[0080] Figure 3 This shows the initial state where the holding part 5 and the unlocking part 6 are not activated. The reference position sensor 6A detects the position mark 68 at the rear end position of the direct actuation member 61 corresponding to the initial state. The holding position sensor 6B detects the position mark 68 at the front end position of the direct actuation member 61 corresponding to the holding state after the holding part 5 and the unlocking part 6 have been activated (see reference). Figure 5 The reference position sensor 6A and the holding position sensor 6B output the detection results to the control unit 79.

[0081] The retaining part 5 can hold the belt feeder 8 that is to be replaced. The two retaining parts 5 share a retaining surface 33. The retaining parts 5 are each composed of a sliding plate 51 and a pair of upper and lower clamps 55. The sliding plate 51 is a generally rectangular plate-shaped component and is provided with a trapezoidal notch. The sliding plate 51 is subjected to force on the forward side by a force-applying spring (not shown). The swinging component 77 swings in the notch of the sliding plate 51. Four elongated sliding holes 52, which are longer in the disassembly and assembly direction, are provided through the sliding plate 51. Support pins 38 erected on the main body 37 are loosely inserted into each of the sliding holes 52. In addition, two elongated holes 53, which are longer in the disassembly and assembly direction, are provided through the sliding plate 51. Intermediate drive pins 64 are loosely inserted into each of the elongated holes 53.

[0082] Compared to the clearance dimension of the sliding hole 52 in the assembly / disassembly direction, the clearance dimension of the elongated hole 53 in the assembly / disassembly direction is larger. Furthermore, if the clearance dimensions of the sliding hole 52 and the elongated hole 53 in the assembly / disassembly direction are added together, they match the predetermined stroke length of the direct-acting component 61 in the assembly / disassembly direction. Figure 3 In the initial state shown, the intermediate drive pin 64 contacts the rear edge of the elongated hole 53, blocking the forward movement of the sliding plate 51 which is being forced forward. At this time, the sliding plate 51 is in the retracted position where the support pin 38 contacts the front edge of the sliding hole 52.

[0083] Two chuck support seats 54 are provided near the front of the slide plate 51 and at two positions symmetrically above and below with respect to the direct action member 61. An upper and lower pair of chucks 55 is swingably supported to the chuck support seats 54. For the upper and lower pair of chucks 55, the rear side is a substantially parallel parallel portion, the front side of the parallel portion is a close portion which is close to each other, and the front side of the close portion is a curved portion which is curved and separated from each other. The chuck 55 supports near the boundary of the parallel portion and the close portion.

[0084] The indirect drive protrusions 65 of the direct action member 61 slide on the facing surfaces of the upper and lower pair of chucks 55, respectively. Figure 3 The indirect drive protrusions 65 slide in contact with the rear end of the parallel portion of the chuck 55. At this time, the upper and lower pair of chucks 55 are in a closed state in which the close portion is in contact with the direct action member 61. Also, the curved portions of the upper and lower pair of chucks 55 sandwich the unlocking operation portion 63 of the direct action member 61, and are closed smaller than the holding hole 8P of the tape feeder 8.

[0085] The control portion 79 is disposed on the lower side of the main body portion 37. The control portion 79 controls the rotation direction and the rotation amount of the stepping motor 71 based on the detection results of the reference position sensor 6A and the holding position sensor 6B. The rotation amount of the stepping motor 71 can be controlled, so the reference position sensor 6A and the holding position sensor 6B are not necessary. However, in the case where the power supply of the exchange device 1 is stopped, in the case where there is an operation based on the manual lever 67, there is a concern that the position of the direct action member 61 is not clear. Therefore, it is preferable to provide at least one of the reference position sensor 6A and the holding position sensor 6B.

[0086] Next, Figure 5 is a partial enlarged perspective view in which the vicinity of the holding surface 33 of the two dismounting direction moving portions 32 is enlarged side by side. Figure 5 indicates the holding state after the holding portion 5 and the unlocking portion 6 act. As described later in detail, the upper and lower pair of chucks 55 of the holding portion 5 protrude from the holding surface 33 to perform an opening operation, thereby holding the tape feeder 8. In addition, the unlocking operation portion 63 of the front end of the direct action member 61 of the unlocking portion 6 protrudes from the holding surface 33 to perform an unlocking operation on the locking portion 8C of the tape feeder 8.

[0087] As illustrated, the two dismounting direction moving portions 32 are disposed adjacent to each other in the arrangement direction at an interval that is three times the predetermined interval Ps. In addition, it can also be that the two dismounting direction moving portions 32 are disposed adjacent to each other at an interval that is two times the predetermined interval Ps, an integer times four times or more. In addition, in each of the dismounting direction moving portions 32, the two holding portions 5 are disposed adjacent to each other in the arrangement direction at the predetermined interval Ps. In addition, it can also be that the two holding portions 5 are disposed adjacent to each other at an interval that is two times the predetermined interval Ps or more.

[0088] 4. Holding action of the exchange device 1 of the embodiment

[0089] Here, the difference in the holding method of the multiple kinds of tape feeders (8X, 8Y, 8Z) of different width dimensions in the action of the exchange device 1 of the embodiment is explained. Figure 6 is a plan view schematically showing the holding method of the standard tape feeder 8X and the large tape feeder 8Y. As shown in the drawing, the standard tape feeder 8X is held by the holding portion 5 on the upper side of the paper. Figure 6 The holding portion 5 on the upper side of the paper holds the standard tape feeder 8X as shown by the dismounting direction moving portion 32.

[0090] In addition, as shown on the lower side of the paper, the large tape feeder 8Y faces two holding portions (5Y, 5) in the arrangement direction. Therefore, one holding portion 5Y holds the large tape feeder 8Y, and the other holding portion 5 maintains the initial state of not protruding from the holding surface 33. Accordingly, when the large tape feeder 8Y is held, the other holding portion 5 is not obstructed. Figure 6

[0091] Next, Figure 7 is a plan view schematically showing the holding method of the super large tape feeder 8Z. As shown in the drawing, the super large tape feeder 8Z faces two dismounting direction moving portions (32Z, 32) in the arrangement direction. Therefore, one holding portion 5Z of the dismounting direction moving portion 32Z on the upper side of the paper holds the super large tape feeder 8Z, and the other holding portion 5 maintains the initial state of not protruding from the holding surface 33. In addition, the other dismounting direction moving portion 32 on the lower side of the paper maintains the two holding portions 5 in the initial state. Also, the other dismounting direction moving portion 32 is maintained at a position behind the one dismounting direction moving portion 32Z in the dismounting direction by the dismounting direction driving device 4. Normally, the other dismounting direction moving portion 32 stays at the rear end position in the dismounting direction. Accordingly, when the super large tape feeder 8Z is held, the other holding portion 5 and the other dismounting direction moving portion 32 are not obstructed. As described above, the holding portion 5 can hold regardless of the size of the tape feeder (8X, 8Y, 8Z).

[0092] ​Next, the holding operation of the replacement device 1 for holding the belt feeder 8 in the embodiment will be described in detail. The following description is applicable regardless of where the belt feeder 8 to be held is located in the feeder storage device 96, the component supply section 9A, or the pre-feeder storage section 9B. First, the alignment direction drive device 20 moves the alignment direction moving part 2 to the front of the belt feeder 8 to be held. Next, the lifting drive unit 26 matches the height of the replacement part 3 with that of the belt feeder 8. Next, the disassembly / assembly direction drive device 4 moves the disassembly / assembly direction moving part 32, which faces the belt feeder 8, forward in the disassembly / assembly direction. The disassembly / assembly direction moving part 32 advances until the holding surface 33 abuts against the holding plate 8N of the belt feeder 8. At this moment, the belt feeder 8... Figure 3 The state shown.

[0093] like Figure 3 As shown, the retaining part 5 and the unlocking part 6 do not protrude from the retaining surface 33 in the initial state when not in operation. Therefore, even if the aligning direction moving part 2 moves slightly in the aligning direction and the position of the disassembly / assembly direction moving part 32 is finely adjusted, there is no concern about damaging the belt feeder 8. If the direct-acting part 61 and the chuck 55 were to protrude from the retaining surface 33, the disassembly / assembly direction moving part 32 would need to be temporarily retracted before the aligning direction moving part 2 moves, making the operation cumbersome and inefficient.

[0094] Next, the control unit 79 starts the stepper motor 71. As a result, the second gear 76 and the oscillating component 77 begin to move... Figure 3 Rotating clockwise, the direct-acting member 61 begins to advance in the disassembly / assembly direction. As the intermediate drive pin 64 of the direct-acting member 61 advances, the sliding plate 51 is also forced forward. The sliding plate 51 then advances to the position where the support pin 38 contacts the rear edge of the sliding hole 52. Thus, both the direct-acting member 61 and the closed chuck 55 protrude from the retaining surface 33 and enter the retaining hole 8P.

[0095] If the direct-acting component 61 advances further after the sliding plate 51 stops at the forward position, the indirect-drive protrusion 65 approaches the approach portion of the chuck 55. Then, the indirect-drive protrusion 65 presses open the approach portions of the upper and lower chucks 55, causing the chucks 55 to open. Thus, as... Figure 8 As shown, the upper and lower clamps 55 are in the bent-out open state, holding the inner surface of the retaining plate 8N. Figure 8 This is a side view of the disassembly / assembly direction moving part 32, showing the holding state after the holding part 5 and the unlocking part 6 have been activated. The disassembly / assembly direction moving part 32 uses a pair of upper and lower clamps 55 of the holding part 5 to hold the belt feeder 8. In addition, there may be some clearance between the clamps 55 and the holding plate 8N in the holding state.

[0096] When the direct action member 61 ends the forward movement of the predetermined action stroke length, the unlocking operation member 63 presses the unlocking arm 8J forward. Thereby, the locking portion 8C shifts to the unlocked state. Next, the attachment / detachment direction driving device 4 causes the attachment / detachment direction moving portion 32 holding the tape feeder 8 to retreat. At this time, for the tape feeder 8, the protrusions 88 of the bottom surface are guided to the insertion slots 314 of the bottom plate 313 and are housed in the internal space of the exchange portion 3. Figure 9 is a perspective view showing a state in which the exchange portion 3 houses the tape feeder 8. Figure 9 In the figure, the housing 31 constituting the exchange portion 3 is omitted. Further, as another form, the exchange portion 3 can not have the insertion slots 314 of the bottom plate 313 and can support the tape feeder 8 only by the holding portion 5.

[0097] When housing the tape feeder 8, the attachment / detachment direction moving portion 32 pulls out the tape feeder 8 horizontally in the attachment / detachment direction. At this time, the pulling-out force acts on the tape feeder 8 from the collet 55. Further, the collet 55 is at the same height as the connector 8B, and thus the connector 8B is pulled out straight. Therefore, the concern of breakage of the connector 8B is reduced. Also, the upper positioning pin 89 and the lower positioning pin 8A are hardly subjected to the pulling-out force in the oblique direction, and thus the concern of breakage is reduced. Further, the required pulling-out force is small.

[0098] Thereafter, the exchange portion 3 is driven to the front of any one of the feeder storage device 96, the component supply portion 9A, and the preliminary feeder storage portion 9B. Further, the exchange portion 3 can store or equip the housed tape feeder 8 in any one of the insertion slots. The storing action and the equipping action of the tape feeder 8 are performed in substantially reverse steps of the above-described holding action.

[0099] 5. Step example of the exchange action of the exchange device 1 of the embodiment

[0100] Next, a step example of the exchange action of the exchange device 1 of the embodiment when exchanging the tape feeder 8 of the component supply portion 9A will be described. Hereinafter, a step example when the standard first tape feeder 8X1 and the third tape feeder 8X3 equipped adjacent to the component supply portion 9A are exchanged for the prepared second tape feeder 8X2 and the fourth tape feeder 8X4 will be described.

[0101] Figure 10 is a plan view of the exchange portion 3 schematically showing a state before the start of the recovery action in the step example of the exchange action. Figure 11 is a plan view of the exchange portion 3 schematically showing a state in which the recovery action ends. Figure 12 is a plan view of the exchange portion 3 schematically showing a state before the start of the equipping action. Figure 13This is a top view of the replacement unit 3, schematically showing the state of the equipment after the operation is completed. Figures 10-13 In the diagram, the second belt feeder 8X2 and the fourth belt feeder 8X4 are shown with cross-sectional lines for convenience.

[0102] Replacement device 1 first becomes a disassembly / reassembly direction moving part 32 ( Figure 10 The two retaining parts 5 on the upper side of the paper do not retain the state of the belt feeder 8. The replacement device 1 then becomes the moving part 32 in other disassembly and assembly directions. Figure 10 The two holding parts 5 (on the lower side of the paper) hold the second belt feeder 8X2 and the fourth belt feeder 8X4 in a state that is housed in the replacement part 3. Next, the alignment direction drive device 20 and the lifting drive unit 26 are activated so that one of the disassembly and assembly direction moving parts 32 of the replacement part 3 is aligned with the first belt feeder 8X1 and the third belt feeder 8X3 of the component supply unit 9A.

[0103] Next, a disassembly / reassembly direction moving part 32 is driven forward by the disassembly / reassembly direction driving device 4 (see reference). Figure 10 (Arrow M1). Next, in a disassembly / assembly direction moving part 32, the common drive part 7 operates, and the two holding parts 5 hold the first belt feeder 8X1 and the third belt feeder 8X3, becoming Figure 10 The state shown. Next, a disassembly / reassembly direction moving part 32 is driven backward by the disassembly / reassembly direction driving device 4 (see reference). Figure 11 Arrow M2). Therefore, as Figure 11 As shown, the first belt feeder 8X1 and the third belt feeder 8X3 are recycled and housed in the replacement unit 3.

[0104] Next, the alignment direction moving part 2 moves in the alignment direction by a size three times the predetermined spacing Ps (see reference). Figure 12 (Arrow M3). Thus, as... Figure 12 As shown, the other disassembly / assembly direction moving part 32 is aligned with the empty slot. Next, the other disassembly / assembly direction moving part 32 is driven forward by the disassembly / assembly direction drive device 4 (see reference). Figure 13 (Arrow M4), becoming Figure 13 The state shown is as follows. Next, the holding part 5 of the other disassembly / assembly direction moving part 32 is released from holding by the opposite direction of the common drive part 7. In addition, the unlocking part 6 locks the locking part 8C. As a result, the second belt feeder 8X2 and the fourth belt feeder 8X4 are installed in the component supply part 9A. Thereafter, the other disassembly / assembly direction moving part 32 is driven backward by the disassembly / assembly direction drive device 4, and the replacement operation ends.

[0105] Further, it is also possible to realize a replacement operation of recovering the first tape feeder 8X1 by one of the holding sections 5 of the dismounting direction moving sections 32 and equipping the second tape feeder 8X2 by one of the holding sections 5 of the other dismounting direction moving sections 32. Further, it is also possible to collectively use the four holding sections 5 to collectively recover the four tape feeders 8X and then collectively equip the four tape feeders 8X. The replacement device 1 can further perform various methods of replacement operation.

[0106] The replacement device 1 of the embodiment has the plurality of holding sections 5, and thus can handle the plurality of tape feeders (8, 8X, 8Y) at the same time. Accordingly, in the component replenishment operation when the components are used up during the mounting operation, the changeover operation when the kind of the substrate to be produced is switched, and the like, the replacement device 1 can efficiently perform the replacement operation. Thus, compared with the conventional structure having one holding section 5, it is possible to shorten the non-production time required for the replacement of the tape feeder (8, 8X, 8Y), to increase the ratio of the production time of the component mounting device (93, 94, 95), and to improve the production efficiency of the substrate.

[0107] 6. Application and modification of the embodiment

[0108] Further, the replacement device 1 can have three or more dismounting direction moving sections 32. In addition, three or more holding sections 5 can be provided to the dismounting direction moving sections 32. Further, the number and arrangement pitch of the holding sections 5 can be different depending on the dismounting direction moving sections 32. In addition, the arrangement pitch of the holding sections 5 can not be an integral multiple of the arrangement pitch Ps of the tape feeders 8. The replacement device 1 of the embodiment has four holding sections 5, but can be simplified to two holding sections 5 as shown in Figure 14 Figure 15 . Figure 14 is a conceptual view showing a replacement device 11 of a first application example of the replacement device 1 of the embodiment. In the replacement device 11 of the first application example, one holding section 5 is provided to each of the two dismounting direction moving sections 32.

[0109] The replacement device 11 of the first application example recovers the first tape feeder 8X1 by one of the dismounting direction moving sections 32 and equips the second tape feeder 8X2 by the other dismounting direction moving section 32 in a case where the first tape feeder 8X1 equipped to the component supply section 9A is to be replaced with the prepared second tape feeder. In addition, the replacement device 11 can collectively recover two tape feeders 8X or collectively equip two tape feeders 8X. Further, in a case where a large tape feeder 8Y is to be replaced, the holding section 5 of one of the dismounting direction moving sections 32 of the replacement device 11 holds the large tape feeder 8Y, and the other dismounting direction moving section 32 is maintained at a position on the rear side in the dismounting direction from one of the dismounting direction moving sections 32 by the dismounting direction driving device 4. ​

[0110] Further, Figure 15 Fig. 12 is a view conceptually showing a second application example of the exchange device 12 of the exchange device 1 of which the embodiment is simplified. In the exchange device 12 of the second application example, two holding portions 5 are provided to the one dismounting direction moving portion 32. The exchange device 12 of the second application example is capable of recovering two tape feeders 8X together or equipping two tape feeders 8X together in addition to the exchange operation of recovering the first tape feeder 8X1 by one holding portion 5 and equipping the second tape feeder 8X2 by the other holding portion 5. Further, in the case of exchanging a large tape feeder 8Y, one holding portion 5 of the exchange device 12 holds the large tape feeder 8Y and the other holding portion 5 maintains the initial state.

[0111] Further, in the holding portion 5, instead of the chuck 55 that grips the tape feeder 8, a hook member that hooks and pulls out the tape feeder 8, an electromagnet that attracts the tape feeder 8 by magnetic force, or the like can be used. Further, as the exchange device not provided with the lift driving portion 26, the tape feeder 8 can be exchanged only between the component supply portion 9A and the feeder storage device 96. Further, the tape feeder 8 can be configured so that the tape reel TR is taken out from the rear side, and the exchange device (1, 11, 12) can exchange only the tape reel TR as the exchange element. The present embodiment can be applied and modified in various ways other than the above.

[0112] Explanation of Reference Numerals

[0113] 1, 11, 12...replacing device 2...arrangement direction moving section 20...arrangement direction driving device 26...elevation driving section 3...replacing section 32, 32Y, 32Z...disassembly direction moving section 33...holding surface 4...disassembly direction driving device 5, 5Y, 5Z...holding section 51...slide plate 55...collet 6...unlocking section 61...direct acting member 63...unlocking operation section 64...intermediate driving pin 65...indirect driving protrusion 67...manual lever 6A...reference position sensor 6B...holding position sensor 7...common driving section 71...stepping motor 73...first gear 76...second gear 77...oscillating member 79...control section 8...tape feeder 8C...locking section 8X...standard tape feeder 8X1-8X4...first to fourth tape feeders 8Y...large tape feeder 8Z...super large tape feeder 9...component mounting system 93...first component mounting device 94...second component mounting device 95...third component mounting device 96...feeder storage device 9A...component supply section 9B...preliminary feeder storage section Ps...predetermined pitch.

Claims

1. A component mounting system, comprising: The component mounting apparatus includes a component supply section that arranges replacement elements, including at least a component receiving container that houses multiple components, in an arrangement direction; and The replacement device replaces the replacement element that is detachably mounted on the component supply unit. The replacement device includes: The alignment direction moving part is provided in such a way that it can move relative to the component mounting device in the alignment direction; The housing, provided in the alignment direction moving part, has an internal space capable of accommodating the plurality of replacement elements in a side-by-side state in the alignment direction; and Multiple retaining parts are capable of holding the replacement element housed within the housing. The replacement device performs at least one of the following operations: holding the replacement elements in the plurality of holding portions and retrieving the plurality of replacement elements from the component supply portion to the housing; and equipping the plurality of replacement elements from the housing to the component supply portion.

2. A component mounting system, comprising: A component mounting apparatus comprising a component supply section for arranging replacement elements, including at least a component receiving container housing multiple components, in an arrangement direction at a predetermined spacing or an integer multiple of the predetermined spacing; and The replacement device replaces the replacement element that is detachably mounted on the component supply unit. The replacement device includes: The alignment direction moving part is provided in a manner that allows it to move relative to the component mounting device in the alignment direction; and The housing, provided in the alignment direction moving part, has an internal space capable of accommodating multiple replacement elements in a side-by-side arrangement in the alignment direction. The replacement elements include standard replacement elements whose width dimension in the arrangement direction is less than the predetermined spacing, and large replacement elements whose width dimension exceeds the predetermined spacing. The replacement device is configured to replace both the standard replacement element and the large replacement element, and has a plurality of holding portions that are capable of holding the replacement elements and are arranged side by side in the arrangement direction, wherein at least one of the plurality of holding portions serves as both the holding portion of the standard replacement element and the holding portion of the large replacement element.

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