JP2003179387A - Component feeder package replacing cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a package replacing cart which is equipped with a multi- purpose space usable for various purposes and located at its center and a lift mechanism which is provided in place of a hydraulic jack and easily handled. <P>SOLUTION: A package replacing cart is equipped with a cam mechanism 60, a lever mechanism 70, and a lift drive unit 55 which moves up or down a component feeder 2 by converting a radius change in a cam 61 through rotation. The cam mechanism 60 comprises a ratchet mechanism which converts the operation of a pedal into the rotation of the cam 61. The ratchet mechanism is composed of a first ratchet mechanism 63 which restrains the cam 61 from rotating further when the point of application of the cam 61 reaches to an apex and a second ratchet mechanism 66 which enables the cam 61 to rotate by making the point of application of the cam 61 pass through the apex. The first ratchet mechanism 63 comprises a mechanism that makes a ratchet lever 71 idle with a sliding tooth unit 65 located at the position where the point of application of the cam 61 reaches the apex, and the second ratchet mechanism 66 comprises a mechanism that enables the ratchet lever 71 to be engaged by a force applied from outside. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting apparatus for mounting a component such as an electronic component on a circuit formed body such as an electronic circuit board. The present invention relates to a cart for batch replacement of a component supply unit used for attaching and detaching to and from a vehicle.

[0002]

2. Description of the Related Art In the production of a circuit-formed body such as an electronic circuit board, it is desired to complete a setup change in a short time in order to improve the operating rate of production equipment. When shifting from the production of one circuit-formed body to the production of the next circuit-formed body, the time required for a setup change for exchanging the component supply device (hereinafter referred to as “parts cassette”) according to the components required for the next production For the purpose of shortening, it is known to collectively replace a plurality of parts cassettes by using a parts supply unit in which a large number of parts cassettes are mounted.

Usually, many kinds of parts are mounted in the production of the circuit-formed body, and it takes a lot of time to replace all kinds of parts cassettes. In the batch replacement method of the component supply unit, this troublesome exchange of various types of parts cassettes is completed outside the component mounting device in advance, and a plurality of parts cassettes are mounted at the same time as the production of the previous circuit forming body is finished. The parts supply unit is collectively replaced, and the setup change is performed in a short time. In order to smoothly carry out this batch replacement, a batch replacement cart is used which is equipped with the component supply section and is moved up and down and moved.

A conventional component mounting apparatus and a batch exchange cart (hereinafter referred to as "cart") will be described below with reference to the drawings. FIG. 12 shows an outline of a component mounting apparatus and a cart according to the related art. In the component mounting apparatus 200 shown on the right side of the figure, the transport unit 201 carries in and carries out a circuit formed body (hereinafter, referred to as a “substrate”) 202, and holds the substrate 202 at a predetermined position during component mounting. The mounting head 208 includes the component supply unit 206.
A series of operations for adsorbing and picking up the component 203 from the (tray type) or 207 (parts cassette type) and mounting it on the substrate 202 are performed. The robot 204 uses the mounting head 20.
While 8 is performing the series of operations described above, the mounting heads 208 are respectively conveyed to predetermined positions and positioned. The component recognition camera 209 images and recognizes the suction state of the components suction-held by the mounting head 208.

During the operation of the component mounting apparatus configured as described above, the board 202 is carried into the mounting position by the transport unit 201 and train-held. The robot 204 is the mounting head 2
08 is moved onto the component supply unit 207, and the mounting head 208 is moved.
One or more nozzles mounted on the component supply unit 2
The component is sucked out from 07 and taken out. The adsorbed parts are
The robot 204 is moved to a position facing the component recognition camera 209 by the conveyance, and the suction posture of the component is captured by the component recognition camera 209. The picked-up image is processed, and the mounting head 2 required for mounting is processed based on the processing result.
The position of 08 and the angle correction amount of the component are grasped. The mounting head 208 moves to a position facing the substrate 202 by the conveyance of the robot 204 in which this correction amount is folded and the rotation of the nozzle, and mounts the component 203 at a predetermined mounting position.

On the left side of FIG. 12, a cart 2 equipped with a parts supply section 207 having a plurality of parts cassettes 212 mounted therein.
20 is shown. The parts supply unit 207 is a cart 220.
While being mounted on the component mounting device 200, the component mounting device 200 is advanced toward the component mounting device 200, is engaged with a pair of positioning pins 214 of the mounting portion 213 of the component mounting device 200, is positioned, and is mounted on the mounting portion 213.

FIG. 13 shows an example of a conventional cart 220. In the figure, the cart 220 includes a frame portion 2.
21, an elevating part 222, a mounting part 223, and an operating part 22
It is mainly composed of 4 and. The frame portion 221 is composed of a movable / turnable carriage having a total of four wheels including two swivel casters. The lifting pedal 226 attached to the frame part 221 operates the hydraulic jack in the lifting part 222 to move the mounting part 223 up and down to move the component supply part 207 to the component mounting device 20 as shown in FIG.
It can be attached to the attachment portion 213 of 0.

The mounting portion 223 is supported by the elevating portion 222 and has a substantially U-shaped central portion formed at its central portion.
07 can be installed. A vertical positioning bar 227, which is a pair of rod-shaped protrusions, is provided on both sides of the mounting portion 223 in the X direction in the figure. When mounting the component supply unit 207, the vertical positioning bar 227 is used by the component mounting apparatus. Fit in the guide on the 200 side. Operation unit 224
Is composed of a pair of operation bars, and is used when the operator moves and turns the entire cart 220.

By the way, during the mounting operation by the component mounting apparatus 200, the components mounted on the parts cassette 212 are sequentially consumed, and a large amount of the used component tape and the protective tape covering it are ejected to the outside of the parts cassette. To be done. Cart 2 is a collection box for collecting these tapes and a storage box for storing spare parts reels.
It was necessary to provide it separately from 20, and this required extra floor space. In the cart 220 of the type as shown in FIG. 13, the central portion of the cart 220 is occupied by a hydraulic jack for raising and lowering the mounting portion 223, and it is not possible to provide the above-mentioned collection box or storage box on the cart 220 itself. It was

On the other hand, Japanese Patent Laid-Open No. 2001-23058
Japanese Patent No. 9 discloses an improved cart 230 having a multipurpose space in the center of the cart as shown in FIG. In this improved cart 230, a small hydraulic jack for raising and lowering the mounting portion is used for the frame portion 23.
The component supply unit 207 is mounted by transmitting the expansion and contraction of this hydraulic jack to the pair of elevating units 232 arranged on both sides of the cart by using the lever mechanism also stored under the floor. The mounting portion 233 is moved up and down.

In the improved cart 230, by adopting the above-mentioned structure, the mounting portion 233, the pair of lifting portions 232, and the frame portion 231 for accommodating the hydraulic jack and other lifting driving portions under the floor. In the center of the enclosed cart, a space that can be used for multiple purposes is secured. In the illustrated example, a storage box 235 for storing the reel 234 of the parts cassette and a recovery box 236 for recovering tapes are provided in this space to effectively utilize the space.

[0012]

DISCLOSURE OF THE INVENTION The present invention secures the effective space in the batch exchange cart provided with the multipurpose space in the central portion of the cart disclosed in the above-mentioned JP 2001-230589A. as it is,
An object of the present invention is to provide a batch exchange cart equipped with an alternative lifting drive unit that facilitates lifting operation and maintenance without using a hydraulic jack.

[0013]

SUMMARY OF THE INVENTION The present invention uses a cam mechanism and a lever mechanism in place of the conventional lifting and lowering drive unit using a hydraulic jack to appropriately control the rotation of the cam and change the radius of the cam. The above problem is solved by providing an elevating and lowering drive unit that converts the force into swing to enable the component supply unit to move up and down, and specifically includes the following contents.

That is, one aspect of the present invention is
A mounting part capable of mounting a component supply part having a plurality of component supply devices mounted thereon, a pair of elevating parts for supporting and elevating the mounting parts, and an elevating drive part for synchronously elevating the pair of elevating parts. A mounting part, each elevating part, and a space that can be used for multiple purposes formed between the elevating and lowering drive parts, and attaches the component supply part to the attaching part by contacting with or separating from the attaching part of the component mounting apparatus, or A batch exchange cart used for removing from the mounting portion, wherein the lifting drive unit transmits a cam mechanism that converts rotation to swing to the pair of lifting units. The present invention relates to a batch exchange cart that is configured by a lever mechanism that moves up and down.

The cam mechanism may include a ratchet mechanism for converting a repetitive operation of a pedal or a lever into a rotation of the cam in a specific direction. The ratchet mechanism rotates the cam so that a point of action of the cam has a maximum radius. A first ratchet mechanism that idles when reaching the apex, which is the position at which the cam does not rotate, and a second ratchet mechanism that allows the cam to pass through the apex of the cam for further rotation. It can be composed of a pair of ratchet mechanisms.

The first ratchet mechanism can be constituted by a mechanism in which the ratchet lever idles at a sliding tooth portion where the ratchet tooth of the ratchet wheel is not provided at a position where the action point of the cam reaches the apex. The second ratchet mechanism enables the ratchet to be engaged by an external force when the action point of the cam is at the apex, and engages the ratchet when the action point of the cam is not at the apex. Can be configured from a control mechanism that is blocked.

Another aspect of the present invention is a batch exchange cart having the characteristics described above, wherein a part of the lifting operation of the lifting drive section is performed between the batch replacement cart and the component mounting apparatus. The present invention relates to a batch exchange cart, which is provided with a safety mechanism that is regulated according to the approach distance. The safety mechanism restricts the lowering operation of the elevating unit when the collective exchange cart is completely separated from the component mounting apparatus, and controls the elevating unit when the collective exchange cart is in close contact with the component mounting apparatus. A mechanism that restricts the raising operation and allows the raising and lowering operations of the elevating unit when the batch exchange cart is at the intermediate position between the two states can be provided.

The safety mechanism is composed of a control mechanism that operates according to the approach distance between the batch exchange cart and the component mounting apparatus. When the control mechanism is completely away from the component mounting apparatus. A mechanism for forcibly releasing the engagement of the second ratchet mechanism and forcibly releasing both the engagement of the first and second ratchet mechanisms when in a state of being in close contact with the component mounting apparatus. You can

Yet another aspect of the present invention is a batch exchange cart having the characteristics described above, which is separated from the component supply unit after the component supply unit is attached to the mounting base of the component mounting apparatus. The present invention relates to a batch exchange cart, which is detachable from a component mounting device.

[0020]

DETAILED DESCRIPTION OF THE INVENTION A cart according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a cart 3 according to the present embodiment. In the figure, the cart 3 includes a frame unit 40, a pair of lifting units 50, a lifting drive unit 55 housed in the frame 40, and a mounting unit 80.
And an operation unit 90. Of these, the frame portion 40 is composed of a trolley having a total of four wheels including two swivel casters 41 and capable of freely turning and moving. The lift-up pedal 42 attached to the frame section 40 operates the lift drive section 55 to operate the mounting section 80.
Used to raise and lower.

The elevating part 50 is a pair of fixed frames 51 fixed to the frame part 40, a pair of elevating rods 53 movable up and down in the Z direction in the figure, and staggered on both sides of the elevating rods 53. At least three guide rollers 52 each supporting the rod 53 so as to be vertically movable.

A component supply unit having a plurality of parts cassettes can be mounted on the mounting unit 80. The mounting part 80 is
A pair of holding arms 8 extending substantially horizontally along the Y direction in the figure.
1 and a pair of lifting rods 53 are combined to hold the holding arm 81.
And a connecting bar 89 for supporting the. A guide guide 82 is provided at the tip of each holding arm 81, and the guide guide 8 is provided when the component supply unit is attached to the component mounting apparatus.
2 hits a guide roller provided in a mounting portion of a component mounting device described later, and guides the cart 3 to a predetermined position of the mounting portion. Further, a positioning pin or a positioning hole 83 is provided on the upper surface of each holding arm 81, and when the component supply unit is mounted, the positioning pin or the positioning hole 83 is fitted into the corresponding hole or pin provided on the lower surface of the component supply unit to mount the component supply unit. Position and hold.

The operation section 90 is provided for the operator to move the entire cart 3 and to operate the elevating and lowering drive section 55. The operation section 90 includes a pair of handle frames 91 fixed to both the fixed frames 51, and an operation lever 93 for lowering the mounting section 80. The operation of the operation lever 93 is performed by the operation wire 94.
It is transmitted to 5.

The above-mentioned configuration is disclosed in Japanese Patent Laid-Open No. 2001-230.
The configuration of the cart disclosed in Japanese Patent No. 589 is almost the same. With this configuration, the cart 3 shown in the present embodiment
As is clear from FIG. 1, it is possible to sufficiently secure a multipurpose space in the center of the cart surrounded by the mounting portion 80, the pair of lifting portions 50, and the lifting driving portion 55.

FIG. 2 shows the relationship between the elevating part 50 fixed to the frame part 40 and the elevating drive part 55 for elevating the elevating part 50. The lifting drive unit 55 is mainly configured by a cam mechanism 60 that is supported by the frame unit 40 and is operable, and a lever mechanism 70 that transmits the swing obtained by the cam mechanism 60 to the lifting unit 50. In this way, the cam mechanism 60 and the lever mechanism 70 are the main components of the lifting drive unit 55, which is different from the cart disclosed in Japanese Patent Laid-Open No. 2001-230589, which includes the lifting drive unit using a hydraulic jack. The cam mechanism 60 includes a cam 61 and a cam 6.
It is composed of a cam shaft 62 which is rotatably supported by 1 and a ratchet mechanism which will be described later. As shown in FIG. 2, the cam 61 is configured so that the radius from the cam shaft 62 changes once per rotation between a maximum value and a minimum value. In this specification, the position where the radius of the cam 61 from the cam shaft 62 is the maximum is called the “vertex”, and the position where the radius is the minimum is called the “bottom point”.

The lever mechanism 70 is in contact with the outer periphery of the cam 61 and swings up and down in the Z direction in the figure, a shaft 57 which is rotatable about the cam lever 56, and a shaft 57 which is rotatable. And a rod-side lever 58 which is pivotally supported by the cam lever 56 and transmits the swing of the cam lever 56 to the up-and-down rod 53 as a vertical movement. A cam roller 54 is rotatably fixed to the tip end portion of the cam lever 56 that is in contact with the cam 61 to reduce sliding resistance between the cam 61 and the cam lever 56. Also, the rod side lever 5
A lifting operation pin 59 is attached to the tip of 8, and the lower end of the lifting rod 53 is in contact with this lifting operation pin 59. In this specification, the point at which the cam 61 contacts the cam roller 54, which is a cam follower, is the "point of action" of the cam 61.
Shall be called.

As shown in FIG. 2, the arm length from the shaft 57 of the rod side lever 58 is set to the same as that of the cam lever 5.
By making the arm length from the shaft 57 of No. 6 larger, the rod side lever 58 can increase the radius change amount of the cam 61 and transmit it to the elevating rod 53. This expansion allows the cam 61 to be made compact, and the cam mechanism 60 can be housed in the frame portion 40. However, depending on the usage conditions, it may not be necessary to increase the stroke of the cam 61, and the arm lengths of both levers 56 and 58 can be arbitrarily selected as needed. Further, the cam 61 can also have another shape such as an eyebrow shape which passes through the apex and the bottom point twice during one rotation.

In FIG. 2, a damper 45 is attached to the elevating part 50.
Is provided. The main body portion of the damper 45 is fixed to the fixed frame 51, and the telescopic portion is fixed to the bracket 46 welded to the elevating rod 53, whereby the damper 45 performs the function of reducing the elevating speed of the elevating rod 53.

FIG. 3 shows the cam 61 in the state shown in FIG.
Is driven to rotate in the direction indicated by the arrow 49 in the figure by the operation of the elevating / lowering unit 55, and the cam lever 56 reaches the apex of the cam 61 and is pushed up in the Z direction in the figure. As a result of the driving of the cam 61, the cam lever 56 rotates the shaft 57 in the clockwise direction, and the rotation of the shaft 57 causes the rod-side lever 58 to also swing upward in the Z direction in the drawing.
As a result, the raising / lowering operation pin 59 is raised, and the raising / lowering rod 53 that is in contact with the raising / lowering operation pin 59 is raised. Ascending and descending of the elevating rod 53 is performed by the mounting portion 80 (FIG.
Further, the component supply section mounted on the mounting section 80 is raised.

The elevating rod 53 can be lowered to the original height by further rotating the cam 61 in the direction shown by the arrow 49 from the state shown in FIG. By this rotation, the cam lever 56 goes over the top of the cam 61, and the weight of the mounting portion 80 and the like passes through the cam lever 56 and the cam 61 moves.
The cam 61 rotates in the direction toward the bottom point where the radius decreases, and the lifting rod 53 is lowered. At this time, when the load of the component supply unit mounted on the mounting unit 80 is large, the elevator rod 53 may be rapidly lowered, which may be a dangerous situation. To avoid such a situation, the damper 45 described above is used. Is provided in the elevating part 50 to reduce the descending speed.

Next, referring to FIGS. 4 and 5, the structure of the lifting drive unit 55 of the cart 3 according to the present embodiment will be described.
FIG. 4 shows an outline of the elevation drive unit 55 as viewed from above the cart 3, and the upper side in the Y direction of the drawing is the component mounting apparatus side. 5A to 5C show the lifting drive unit 55 shown in FIG.
In three different positions, that is, the first ratchet mechanism (a), the second ratchet mechanism (b), and the cam mechanism (c).
4 is a partial side cross-sectional view seen from the right side in the X direction of FIG.

First, in FIG. 4, the pedal 42 for raising and lowering the component supply portion is attached to the pedal shaft 75.
A link block 76 is fixed to the pedal shaft 75, and a link 77 is rotatably attached to the link block 76. The link 77 connects the link block 76 and the swing lever 69, and transmits the movement of the pedal 42 to the swing lever 69. The swing lever 69 operates the cam mechanism 60. The cam mechanism 60 includes a cam 61, a cam shaft 62, and a first cam for controlling rotation of the cam shaft 62.
The ratchet mechanism 63 and the second ratchet mechanism 66 are mainly configured.

In the lever mechanism 70, a cam lever 56, which is partially cut out in FIG. 4, is in contact with the outer peripheral surface of the cam 61 from above in the drawing, and the cam lever 56 moves to the left and right in the X direction in the drawing. It swings in a direction perpendicular to the drawing around the extending shaft 57. This cam lever 56 by rotation of the cam 61
Is transmitted to the rod-side lever 58 in an enlarged manner via the shaft 57, and the movement of the rod-side lever 58 causes the lifting rod 53 (see FIG. 2) that abuts the lifting operation pin 59 in a direction perpendicular to the drawing. Push up. Although the left side portion of the shaft 57 in the X direction is omitted in FIG. 4, the rod-side lever 58 is also provided on the omitted left side, and the shaft 57 includes the other lifting rod 53 located at this portion. It is pushed up in synchronization with the right lifting rod 53. Further, bearings 48 that rotatably fix the shaft 57 are provided at both axial ends of the shaft 57.

FIG. 5A shows the first ratchet mechanism 63.
4 is viewed from the left side in the X direction of FIG. In the first ratchet mechanism 63, the first ratchet wheel 64
And the first ratchet lever 71 are engaged. By the repeated operation of the pedal 42, the link block 76 rotates about the pedal shaft 75, and the swing lever 69 swings concentrically with the cam shaft 62 via the link 77. As a result, the first ratchet attached to the swing lever 69
The lever 71 pivots clockwise in the figure, causing the engaging first ratchet wheel 64 to also rotate clockwise. The ratchet feed is 20 ° per tooth,
The cam shaft 62 can be half-rotated (corresponding to movement from the bottom point to the apex of the cam 61) by operating the pedal 9 times. The first ratchet wheel 64 is provided with a sliding tooth portion 65 having no ratchet teeth. This will be described later.

FIG. 5B shows the second ratchet mechanism 66.
4 is also seen from the left side in the X direction of FIG. Second
In the ratchet mechanism 66, the second ratchet wheel 67 and the second ratchet lever 73 engage with each other.
In the second ratchet mechanism 66, a control roller 74 rotatably attached to the second ratchet lever 73 is also provided with a control cam 72 indicated by a chain double-dashed line that is fixed coaxially with the second ratchet wheel 67. Is engaged with. According to the rotation angle of the control cam 72, the second ratchet lever 73 is controlled to be in a state in which it can be engaged with the second ratchet wheel 67 or a state in which the engagement is blocked. A descending lever 106 is arranged behind the second ratchet lever 73 (on the right side in the figure), and the second ratchet lever 73 is forcibly pushed from behind as shown by the two-dot chain line to push the second ratchet lever 73. It is configured to engage the wheel 67. The third ratchet lever 68 is always engaged with the second ratchet wheel 67, and the second ratchet wheel 67 (and
Counterclockwise reverse rotation of the cam shaft 62 and the cam 61) is prevented.

FIG. 5C shows a state in which the portion where the cam mechanism 60 and the lever mechanism 70 are engaged is seen from the left side in the X direction of FIG. The rotation of the cam shaft 62 generated by the operation of the pedal 42 shown in FIG. 5A leads to the rotation of the cam 61, and the cam roller 5 is rotated in accordance with the change in the radius of the cam 61.
Cam lever 5 that comes into contact with the outer peripheral surface of the cam 61 via
6 swings in the vertical direction in the figure. In the state shown in FIG. 5C, the cam lever 56 contacts the bottom point of the cam 61, and supports the elevating part 50 at the lowest position.

Returning to FIG. 4, in the cart 3 according to the present embodiment, a safety mechanism for restricting the ascending / descending operation of the component supply unit mounted on the cart 3 in accordance with the gap between the component mounting device and the cart 3. 100 is provided. Safety mechanism 100
Is projected from the cart 3 toward the component mounting device and is indicated by Y in the figure.
A safety lever 101 movable along the direction, a lock lever 104 movable along the X direction in the figure by a control piece 102 provided at one end of the safety lever 101, and a terminal portion 103 of the safety lever 101 also contact. It is mainly configured by an ascending regulation rod 111 which can move in the Y direction in the figure by coming into contact with each other.

When the safety lever 101 is in a position where it completely projects in the Y direction shown by the solid line, that is, when the cart 3 is completely separated from the component mounting apparatus, the safety lever 10
The control lever 102 of No. 1 moves the lock lever 104 to the right in the X direction, which causes the lock lever 104 to move.
Is the lowering lever 106 on the second ratchet mechanism 66.
To lock and prevent rotation.

When the safety lever 101 is at the position shown by the chain double-dashed line A, that is, the cart 3 approaches the component mounting apparatus, the safety lever 101 hits a bracket or the like provided on the component mounting apparatus side, and the safety lever 101 When is pushed in one step, the control piece 102 moves and the lock lever 104 moves to the left side in the X direction in the figure by the action of the lock lever spring 105. This releases the restraint of the lowering lever 106 by the lock lever 104 described above.

When the safety lever 101 is at the position shown by the chain double-dashed line B, that is, the cart 3 is completely pushed into the component mounting apparatus and brought into close contact with it, and the safety lever 101 is pushed to the maximum (two steps). At this time, the terminal portion 103 of the safety lever 101 moves the lift regulating rod 111
It is pushed downward in the Y direction against the tension of the spring 112. The lift restricting rod 111 is provided on the lift restricting lever 11
3 is connected to an ascending restriction wire 114, and the ascending restriction wire 114 is connected at its other end 114a to the first ratchet lever 71 as shown by a broken line.

A more detailed structure and operation of the lifting drive unit 55 having the above-described structure will be described with reference to FIGS. 6 to 8 in which the gap between the cart 3 and the component mounting device is different. FIGS. 6A to 6C show a state in which the cart 3 is completely separated from the component mounting apparatus and the safety lever 101 shown in FIG. 6A projects leftward in the drawing. In this state, the control piece 102 of the safety lever 101 pushes the lock lever 104 upward in the figure. Therefore, as shown in FIG. 6C, the end surface 104a of the lock lever 104 hits the end surface 106a of the lowering lever 106, and the lowering lever 106 is constrained so that its rotation is disabled. In this state, even if the operating lever 93 (see FIG. 1) of the operating portion 90 is operated to pull the operating wire 94 to the right in the figure, this operating force is absorbed by the extension of the operating wire spring 95, and the lowering lever is moved. 106 cannot be rotated counterclockwise in the figure.

That is, in the state shown in FIG. 6C, the second ratchet mechanism 66 cannot be operated.
This is because by accidentally operating the operation lever 93 and the pedal 42 when the cart 3 is in a position away from the component mounting apparatus and the component supply unit is in a raised state,
This avoids the risk of dropping the parts supply part suddenly. Further, the above-described operation wire spring 95 provided on the operation wire 94 is a safety device for avoiding damage to the lifting drive unit 55 even when the operator forcibly operates the operation lever 93 when the lowering lever 106 is restrained. It plays a role as a device. The operating wire spring 95 may be rubber or another elastic body.

In FIG. 6 (b), the first ratchet wheel 64 constituting the first ratchet mechanism 63 and the first ratchet lever 71 are engaged with each other, and therefore the pedal 42 is operated in this state. It is possible to rotate the first ratchet wheel 64 by operation. By operating this pedal 42, the cam 61 rotates, and the elevating part 50 can be raised via the lever mechanism 70.

That is, when the cart 3 shown in FIGS. 6A to 6C is completely separated from the component mounting apparatus, when the component supply section is in the lowered position, the pedal 42 is operated to raise it. This makes it possible to prepare for setting the component supply unit in the component mounting apparatus. Further, when the component supply unit is in the elevated position, it is maintained and prevented from descending.

Next, FIGS. 7A to 7C show a state in which the cart 3 approaches the component mounting apparatus one step and the safety lever 101 is pushed in one step. Safety lever 101 at this stage
Control piece 102 moves to the right side in the figure, and the lock lever 104 moves downward in the figure due to the tension of the lock lever spring 105. This releases the restraint state of the lowering lever 106 by the lock lever 104 shown in FIG. 6C, and the lowering lever 106 is pulled by the two-dot chain line by pulling the operation wire 94 as shown in FIG. 7C. It is possible to rotate it counterclockwise as shown by.

In FIG. 7 (b), the first ratchet wheel 64 and the first ratchet lever 71 constituting the first ratchet mechanism 63 are in the engaged state, but the ratchet lever 71 is the ratchet lever.・ While riding on the sliding tooth portion 65 where the ratchet teeth of the wheel 64 are not provided and operating the pedal 42, the ratchet
The wheel 64 is in an idle state in which it cannot rotate. In this state, the elevating part 50 is elevated to the highest position. That is, once the action point of the cam 61 reaches the apex by the rotation of the cam 61, the further rotation of the cam 61 is blocked. This makes it possible to maintain the component supply unit mounted on the cart 3 at the highest raised position (that is, prevent the component supply unit from descending) and allow the component supply unit to approach the component mounting apparatus as it is. It is a thing.

However, after the cart 3 is brought closer to the component mounting apparatus by one step, it is necessary to lower the component supply unit in order to attach it to the component mounting apparatus. This operation is
This is possible by using the second ratchet mechanism 66 shown in FIG. 7 (c). Specifically, by grasping the operation lever 93 (see FIG. 1) on the operation unit 90 of the cart 3, the operation wire 94 is pulled to the right side of the drawing, and the lowering lever 106 in the state where the restraint is released is indicated by a two-dot chain line. Rotate counterclockwise to the position shown and push the lowering lever 106 counterclockwise from behind the second ratchet lever 73. The control cam 72, which is shown by a chain double-dashed line and rotates in synchronization with the second ratchet wheel 67, has a portion with a short radius facing the ratchet lever 73. Therefore, the second ratchet lever 73 is It is in a rotatable state.
Therefore, the second ratchet lever 73 is rotated to the position shown by the chain double-dashed line by the pushing action of the lowering lever 106 from the rear side, and the second ratchet lever 73 is engaged with the second ratchet wheel 67.

When the pedal 42 is operated in this state, the operation shown in FIG.
Although the first ratchet mechanism 63 shown in (b) is idle, the second ratchet mechanism 66 shown in FIG. 7 (c) rotates the second ratchet wheel 67, so that the cam shaft 62 rotates, The cam 61 is also rotated by this. The cam lever 56 (see FIG. 5 (c)) now crosses the apex of the cam 61, and the cam lever 56 (see FIG.
The lever 56 pushes down the cam 61, and the cam 61 is rotatable until reaching the bottom point.

That is, in the state shown in FIGS. 7 (a) to 7 (c), the cart 3 is brought closer to the component mounting apparatus by one step, and the operation lever 93 is operated to move the component supply unit which is maintained in the raised position. It is possible to lower and mount it on the mounting part of the component mounting apparatus.

Next, FIGS. 8A to 8C show a state in which the cart 3 is maximally pushed into the component mounting apparatus and is in close contact therewith. In this state, the safety lever 101 is further pushed in the right direction in the figure, and the terminal portion 103 of the safety lever 101 abuts on the lift control rod 111 and pushes it in the right side of the figure. This movement pulls the lift control wire 114 in the direction indicated by the arrow 116 via the rotation of the lift control lever 113. Figure 8
In the first ratchet mechanism 63 shown in (b), the other end 114a of the raising control wire 114 pulls the back of the first ratchet lever 71 to the right side of the drawing, and the first ratchet lever 71 and the first ratchet lever 71. The engagement with the ratchet wheel 64 is forcibly released. Further, in the second ratchet mechanism 66 shown in FIG. 8C, the second ratchet lever 73 is engaged with the control cam 72 by the action of the control roller 74, so that the second ratchet wheel 67 is engaged with the second ratchet wheel 67. The second ratchet mechanism cannot be engaged even if the operation wire 94 is pulled at this stage and the lowering lever 106 is rotated at this stage.

That is, in the states shown in FIGS. 8 (a) to 8 (c), the rise of the component supply section due to the operation of the pedal 42 is restricted so as to be prevented. This serves as a safety device that avoids accidentally raising the component supply unit after being attached to the component mounting apparatus and damaging the mounting nozzles and other members mounted on the component mounting apparatus.

The operation when the cart 3 is separated from the component mounting apparatus and the component supply section is removed is basically the reverse of the operation described above. That is, by retracting the cart 3 from the one-step component mounting apparatus from the state shown in FIG. 8, the safety lever 101 moves forward by one step, and the terminal portion 103 of the safety lever 101 separates from the lift control rod 111. As a result, the pulling by the lift control wire 114 is released, and the first ratchet lever 71 moves the first ratchet wheel 6
Engage 4 Here, by operating the pedal 42, the component supply unit can be raised, and as a result, the state shown in FIG. 7 is restored.

When the cart 3 is further separated from the component mounting apparatus while the component supply section is being raised, the cart 3 returns to the state shown in FIGS. 6A to 6C, which is completely separated from the component mounting apparatus. In this state, as shown in FIG. 6C, the end surface 104a of the lock lever 104 abuts on the end surface 106a of the lowering lever 106 to restrict the rotation of the lowering lever 106. Therefore, the operating lever 93 is operated to supply the components. It becomes impossible to lower the section. That is, in this state, it plays a role of a safety device that avoids a risk caused by accidentally dropping the component supply unit suddenly.

In the present embodiment, the operation of the safety mechanism 100 described above uses a control mechanism by pushing in the safety lever 101 having a simple structure. However, this may be a control system using an approach sensor, for example. Alternatively, it is also possible to adopt a method of controlling using a lever mechanism or a gear mechanism provided between the mounting apparatus main body and the cart 3.

Next, the relationship between the raising / lowering operation of the raising / lowering drive unit 55 of the cart 3 configured as described above and the operation of attaching the component supply unit to the attachment unit of the component mounting apparatus will be described with reference to the drawings. To do. FIG. 9 shows the component supply unit 2 on the left side in the Y direction and the mounting unit 4 on the right side. As described above, the component supply unit 2 is mounted on the cart 3 and pushed in the direction indicated by the arrow 30, and is set on the mounting unit 4 provided on the component mounting apparatus side. In the present specification, the movement in the direction toward the mounting portion 4 indicated by the arrow 30 is “forward”, and the movement in the opposite direction is “backward”.
Shall be called.

First, the component supply unit 2 shown on the left side of FIG. 9 includes a reference horizontal plate 11, an exchange plate 12 fixed on the reference horizontal plate 11, and a guide plate 13 vertically attached to the exchange plate 12. It is mainly composed of. Stopper bolts 16 serving as guides for mounting the component supply unit 2 on the mounting base 4 are fixed to the vertical surfaces 14 of the reference horizontal plate 11 which are both end surfaces in the X direction in the figure.

The exchange plate 12 is provided with a plurality of dovetail-shaped slots 17 for attaching a parts cassette,
The parts cassette is inserted into each slot 17 and mounted in the parts supply unit 2. Therefore, a large number of parts cassettes can be mounted in one component supply unit 2, and batch replacement at the time of setup change becomes possible. Guide plate 1
3, a plurality of positioning grooves 18 for positioning the mounted parts cassette, and an air joint 19 for supplying air to each parts cassette are provided below the positioning grooves 18.

Next, the mounting portion 4 on the component mounting apparatus side shown on the right side of FIG. 9 has a substantially U-shaped structure by the end plate 21 and the pair of arm plates 22 on both sides in the X direction of the drawing with respect to the end plate 21. It is formed in a V shape. The end plate 21 has an air joint 23 for supplying air to the component supply unit 2, and a connector 3 for exchanging electric signals.
3 and the like are provided to supply air and electric signals for operating the parts cassette when the parts supply unit 2 is attached.

Both arm plates 22 position the component supply unit 2 at a predetermined position when the component supply unit 2 is attached to the attachment unit 4. For this positioning, each arm plate 22 firstly has a horizontal guide surface 24 and a horizontal stopper 26 that perform vertical positioning and guide along the illustrated Z direction, and front and rear positioning and guides along the illustrated Y direction. Vertical stopper 28 and positioning pin 29
Further, a vertical guide surface 31 and a guide roller 32 for guiding in the left-right direction along the illustrated X direction are respectively provided. Of these, the horizontal stopper 26, the vertical stopper 28, the vertical guide surface 31, and the guide roller 32 are all used as guides when attaching and detaching the component supply unit 2.

FIGS. 10A to 10F show stopper bolts 16 provided on the reference horizontal plate 11 of the component supply unit 2,
The relationship between the horizontal stopper 26 and the vertical stopper 28 provided on the arm plate 22 of the mounting base 4 is shown in a state viewed from the X direction in FIG. 9. A part of the component supply unit 2 is shown on the left side of each drawing, and a part of the mounting base 4 is shown on the right side.

In FIG. 10A, the component supply unit 2 mounted on the cart 3 (not shown) advances toward the right side of the drawing toward the mounting base 4 and reaches the stopper of the component supply unit 2 as shown in FIG. 10B. The bolt 16 is the vertical stopper 2 of the mount 4.
Hit the 8. During this time, the movement in the X direction perpendicular to the drawing is caused by the guide guide 82 on the mounting portion 80 of the cart 3 shown in FIG.
Is guided by a guide roller 32 located at.

At this stage, the above-mentioned safety lever 101 of the cart 3 is pushed in by one stage, as shown in FIG. 6 (c).
As a result of releasing the locked state by the lock lever 104 that restricts the rotation of the descending lever 106 described with reference to FIG. By lowering the component supply unit 2 by the operation of the operation lever 93 by the operator,
As shown in FIG. 10 (c), the stopper bolts 16 of the component supply unit 2 are lowered, and both arm plates 2 of the mount 4 are attached.
It is fitted in the groove portion 20 on the right side in the Y direction of the horizontal stopper 26 provided on the No. 2. By lowering the component supply unit 2 at this time, the reference horizontal plate 11 on the lower surface of the component supply unit 2 is moved to the horizontal guide surface 24 (FIG. 9) provided on both arm plates 22.
(Refer to FIG. 3), and the component supply unit 2 is positioned in the horizontal direction.

Next, when the component supply unit 2 is pushed further forward from this state, the stopper bolt 16 moves in the groove 20 below the vertical stopper 28 as shown in FIG. 10 (d). Move forward to the right in the Y direction in the figure. By the second-stage advance of the component supply unit 2, the positioning pin 29 (see FIG. 9) provided on the horizontal guide surface 24 of the mounting base 4 is provided on the reference horizontal plate 11 of the component supply unit 2 and is not shown. The parts are fitted into the positioning grooves, and the positioning of the component supply unit 2 is completed. In this state, the component supply unit 2 is clamped by the component mounting device, and the batch replacement of the parts cassette, which is the component supply device, is completed.

In the state where the component supply unit 2 is clamped by the component mounting apparatus, the above-mentioned safety lever 101 provided on the cart 3 is pushed to the maximum, and FIG.
As described with reference to FIGS.
By the operation of 11, the rotation of the cam 61 is controlled so as to always be in a lowered state, so that it is possible to avoid accidentally lifting up the component supply unit 2 and damaging the mounting apparatus main body side. Similarly, in this clamped state, the air joint 23 on the mounting base 4 side and the electrical signal transmitting / receiving connector 33 (see FIG. 9) are connected to the corresponding joints and connectors on the component supply unit 2 side, respectively. The electrical connection between the air and the electric signal to the supply unit 2 is enabled, and the mounting operation by the component mounting apparatus is started.

After the mounting operation is completed, the operation for removing the component supply unit 2 from the mounting base 4 of the component mounting apparatus is basically the reverse of the above-described mounting operation. That is, the clamped state of the component supply unit 2 in the mounted state is released, and the stopper bolt 16 of the component supply unit 2 abuts the horizontal stopper 26 of the mounting base 4 as shown in FIG. Move back one step to the left in the Y direction.

Here, as described with reference to FIG. 7A, the safety mechanism 1 of the cart 3 for controlling the rotation of the cam 61.
00 safety lever 101 is returned to the next stage, the first ratchet mechanism 63 is engaged and the cam 6 is operated by operating the pedal 42.
One rotation is possible. The operator operates the pedal 42, and lifts up the component supply unit 2 until the stopper bolt 16 clears the height of the horizontal stopper 26 as shown in FIG. Next, by retracting the cart 3 to the left in the Y direction in the drawing so as to separate it from the mounting apparatus body 1 by one step, the original state shown in FIG. 10A is restored, and the component supply unit 2 can be removed from the mounting base 4. Complete.

That is, the safety mechanism 100 of the cart 3 described with reference to FIGS. 4 to 8 performs the positioning operation of the component supply unit 2 when the component supply unit 2 described above is attached to the attachment unit 4 of the component mounting apparatus. Is configured to link with.

FIG. 11 shows a cart 3 according to this embodiment.
7 shows a usage mode when the is used for the component mounting apparatus. In the figure, the component mounting apparatus 1 is provided with two mounting parts for the component supply part 2, of which the mounting part on the left side in the X direction of the drawing has a cart 3a according to the present embodiment.
Is used to attach the component supply unit 2a. In the mounting portion 4 on the right side in the X direction of the figure,
Another component supply unit 2 mounted on the cart 3 faces each other in a mountable state. The configuration of the component mounting apparatus 1 is the same as the configuration of the component mounting apparatus described above in the related art.
After the component supply unit 2 is positioned on the mounting base 4, the clamp switch 6 is pressed to clamp the component supply unit 2 to the component mounting apparatus 1.

In FIG. 11, the parts cassette 7 has a storage box provided in a space in the center of the cart 3 according to the present embodiment, in which a reel portion 8 on which a storage tape for supplying components is wound is bent downward. It has been improved to fit in 9. With such an improvement, the amount of protrusion of the parts cassette 7 can be suppressed to be small while being mounted on the component mounting apparatus 1, and the center of gravity can be lowered, so that the operator can easily handle the cart 3. Similarly, the recovery box 10 provided in the central portion of the cart 3 can be used for recovering the component tape for supplying components or the protective tape covering the components accommodated in the component tape after use.

The cart 3a is shown in a fixed state on the component supply section 2a attached to the component mounting apparatus 1. This is because, as described above, the cart 3 according to the present embodiment allows the storage box 8 and the recovery box 10 to be installed in the central portion thereof, so that the component mounting apparatus 1 is operating. The cart 3a is effectively used.

However, in another mode of the cart 3 according to the present embodiment, the cart 3 can be attached and detached without being fixed while the component mounting apparatus 1 is in operation. If the cart 3 becomes detachable, the cart 3 can be effectively used, for example, when the cart 3 is used for attaching a component supply unit to an attachment unit of another component mounting apparatus. For example, when a plurality of component mounting apparatuses are used in series and operated, the total number of carts 3 can be reduced and waste of floor space can be eliminated.

As described above, in order to make the cart 3 attachable to and detachable from the component mounting apparatus 1, it is necessary to move the components that may be an obstacle when the cart 3 is separated from the component mounting apparatus 1. In addition to the storage box 9 and the recovery box 10 shown in FIG. 11, the connection bar 89 and the connection bar 8 fixed to both the lifting rods 53 shown in FIG.
Mounting part 8 consisting of a pair of holding arms 81 fixed to 9
There is 0. The holding arm 81 can be removed from the obstacle element by directly fixing it to the lifting rod 53, and
As a result, the connecting bar 89 is also unnecessary, and these can be removed. At this time, since the fixed frame 51 and the elevating rod 53 are fixed only by the frame portion 40, it is necessary to take measures to compensate for insufficient strength. For example, this can be dealt with by strengthening the mounting base of the fixed frame 51 to the frame portion 40 and increasing the rigidity of the elevating rod 53. The other mechanism and configuration are the same as the contents of the cart 3 described above, and a detachable cart can be realized.

The configuration of the lifting / lowering drive section, which is an alternative to the hydraulic jack used in the cart disclosed in Japanese Patent Laid-Open No. 2001-230589, and the mode of the cart have been described above. However, the configuration as an alternative to the hydraulic jack. Are not limited to those described above. While utilizing the cam mechanism and lever mechanism, for example, a one-way clutch is used instead of the ratchet mechanism to control the on / off of torque transmission using the clutch, or an approach sensor or manipulator is used instead of the safety lever. It can be controlled by the following methods. The cam mechanism may be rotationally driven by lever operation instead of pedal operation.

[0074]

According to the implementation of the batch exchange cart according to the present invention, it is possible to facilitate the operation and the maintenance which are required without using the hydraulic jack. For example, according to the cart according to the present invention, it is possible to obtain the same degree of elevation of the elevating part by operating the pedal approximately half as compared with the hydraulic jack type cart. Further, since hydraulic equipment is not used, it is not necessary to take measures against oil leaks, which facilitates maintenance.

Further, the elevating and lowering drive unit is housed in the frame in a low floor, and a pair of elevating and lowering units are provided at both edges of the cart, so that a sufficient space can be provided in the center of the cart. Since a storage box for storing the reel portion of the parts cassette and a collection box for collecting the component tape, the protective tape, etc. are provided, the floor space can be effectively utilized.

[Brief description of drawings]

FIG. 1 is a perspective view of a batch exchange cart according to an embodiment of the present invention.

FIG. 2 is a partial side sectional view showing a lifting unit and a lifting drive unit of the batch exchange cart shown in FIG.

FIG. 3 is a partial side cross-sectional view showing a state in which the lifting unit and the lifting drive unit shown in FIG. 2 are in a raised position.

FIG. 4 is a plan view of relevant parts showing a lifting drive unit of the batch exchange cart shown in FIG. 1.

5 is a partial side cross-sectional view of the lifting drive unit shown in FIG.

FIG. 6 is an explanatory diagram showing an operation of the lifting drive unit shown in FIG.

FIG. 7 is an explanatory diagram showing another operation of the lifting drive unit shown in FIG.

8 is an explanatory diagram showing still another operation of the lifting drive unit shown in FIG.

FIG. 9 is a perspective view showing a state in which the component supply unit is attached to the attachment unit of the component mounting apparatus.

FIG. 10 is an explanatory diagram showing a positioning state when the component supply unit is attached to the attachment unit of the component mounting apparatus.

FIG. 11 is a perspective view showing a state in which the batch replacement cart according to the embodiment of the present invention is used in a component mounting apparatus.

FIG. 12 is a perspective view showing a state in which a conventional batch exchange cart is used in a component mounting apparatus.

FIG. 13 is a perspective view showing a batch exchange cart according to a conventional technique.

FIG. 14 is a perspective view showing another batch exchange cart according to the related art.

[Explanation of symbols]

1. Component mounting device, 2. Parts supply unit, 3. Bulk exchange cart, 4. Mounting part, 9. Storage box, 10.
Collection box, 16. Stopper bolts, 22. Arm plate, 26. Horizontal stopper, 28. Vertical stopper,
29. Locating pin, 31. Vertical guide surface, 3
2. Guide roller, 40. Frame portion, 42. Pedal, 45. Damper, 50. Lifting unit, 53. Lifting rod, 55. Lift drive unit, 56. Cam lever,
57. Shaft, 58. Rod side lever, 59. Lifting operation pin, 60. Cam mechanism, 61. Cam, 6
2. Cam shaft, 63. First ratchet mechanism, 64.
First ratchet wheel, 65. Sliding tooth part, 6
6. Second ratchet mechanism, 67. Second ratchet wheel, 68. Third ratchet lever, 6
9. Swing lever, 70. Lever mechanism, 71. First ratchet lever, 72. Control cam, 73. Second
Ratchet lever, 74. Control roller, 77.
Link, 80. Mounting part, 81. Holding arm, 8
2. Information guide, 90. Operation unit, 93. Operating lever, 94. Operating wire, 100. Safety device, 10
1. Safety lever, 102. Control piece, 103. Terminal part,
104. Lock lever, 106. Down lever,
111. Climbing control rod, 113. Climbing control lever,
114. Climbing control wire.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Taira Ishii             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Kazunori Kanai             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 5E313 AA02 AA15 CC08 CD05 DD32                       DD50 FF01 FG10

Claims (14)

[Claims] 1. A mounting unit capable of mounting a component supply unit having a plurality of component supply devices mounted thereon, a pair of elevating units for supporting and elevating the mounting units, and an elevating drive for the pair of elevating units in synchronization. And a mounting unit, each lifting unit, and a space that can be used for multiple purposes formed between the lifting units, and the component supply unit is attached to and detached from the mounting unit of the component mounting apparatus. In a batch exchange cart used for attaching to or detaching from a mounting portion, the lift drive portion converts a rotation into a swing, and a cam mechanism,
A collective exchange cart comprising a lever mechanism for transmitting the swing to the pair of lifting units and lifting the pair. 2. A storage box in which a reel around which a component tape of the component supply device is wound can be stored in the space, or a collection box for collecting the component tape or a protective tape covering the component tape after use. Alternatively, the batch exchange cart according to claim 1, further comprising both. 3. The batch exchange cart according to claim 1, wherein the lever mechanism expands the swing of the cam mechanism and transmits the swing to the pair of lifting units. 4. The batch exchange cart according to claim 1, wherein the cam mechanism includes a ratchet mechanism that converts a repeated operation of a pedal or a lever into a rotation of a cam in a specific direction. 5. The ratchet mechanism according to claim 1, wherein the ratchet mechanism rotates idly when the point of action of the cam reaches the apex which is the position where the radius is maximum, and the ratchet mechanism disables further rotation of the cam. 5. The batch exchange cart according to claim 4, comprising a pair of ratchet mechanisms with a second ratchet mechanism that allows the cam to rotate further by passing through the apex. 6. The first ratchet mechanism includes a mechanism in which a ratchet lever idles at a sliding tooth portion where ratchet teeth of a ratchet wheel are not provided at a position where an action point of the cam reaches the apex. The cart for batch exchange according to claim 5, characterized in that: 7. The second ratchet mechanism enables the ratchet to be engaged by a forcing force from the outside when the action point of the cam is at the apex, and the ratchet engagement when the action point of the cam is not at the apex. The batch exchange cart according to claim 5, further comprising a control mechanism for preventing the combination. 8. The external force is applied by operating an operating lever and pushing the ratchet lever toward a ratchet wheel via a wire, as claimed in claim 7. Bulk replacement cart. 9. An elastic body is attached to a part of the wire for absorbing an operation force of the operation lever when the operation lever is operated while the engagement of the ratchet is blocked. The cart for batch exchange according to claim 8. 10. A control mechanism for preventing the engagement of the ratchet releases the engagement of the ratchet when the operating point of the cam is not at the apex, and the engagement of the ratchet when the operating point of the cam is at the apex. 8. The batch exchange cart according to claim 7, further comprising a control cam that rotates in synchronism with the cam that controls a ratchet lever to allow the engagement. 11. A part of the raising / lowering operation of the raising / lowering drive unit comprises:
The batch replacement cart according to claim 1, further comprising a safety mechanism that is regulated according to an approach distance between the batch replacement cart and the component mounting apparatus. 12. The safety mechanism regulates the lowering operation of the elevating part when the collective exchange cart is completely separated from the component mounting apparatus, and the collective exchange cart is in close contact with the component mounting apparatus. 12. The mechanism according to claim 11, which is a mechanism that sometimes restricts the lifting operation of the elevating part and permits the elevating operation and the descending operation of the elevating part when the batch exchange cart is at the intermediate position between the two states. Bulk replacement cart. 13. The safety mechanism comprises a control mechanism that operates according to the approach distance between the batch replacement cart and the component mounting apparatus, and the control mechanism is such that the batch replacement cart is completely separated from the component mounting apparatus. The second ratchet mechanism is forcibly released when in the state, and the first and second ratchet mechanisms are both engaged when the batch exchange cart is in close contact with the component mounting apparatus. The batch exchange cart according to claim 12, which is a mechanism for forcibly releasing. 14. The device according to claim 1, wherein after the component supply unit is attached to a mounting base of the component mounting apparatus, the component supply unit is separated from the component mounting unit and is detachable from the component mounting apparatus. The batch exchange cart according to any one of 13.