JP2989202B2 - Parts supply device - Google Patents

Description

The present invention relates to a component supply device in an electronic component mounting device.

(B) Conventional technology As a component supply method in an electronic component mounting apparatus, there are 1
A plurality of component supply cassettes are removably arranged on a table, and the table is moved linearly to position an arbitrary component supply cassette at a component removal position. Recently, a device having a plurality of tables has been put to practical use, and an example of such a device can be found in Japanese Patent Application Laid-Open No. 62-140499. This device has two tables, and while one table is supplying parts, the other table can be replenished by the operator and the other table can be operated more than one table. Increasing rates.

(C) Problems to be Solved by the Invention In the above-described apparatus, every time a component is cut out on the table, the operator has to go to the machine and replace the component supply cassette. Further, when changing the model, all the component supply cassettes are sometimes replaced, and the operator has to perform troublesome work in a short time in order to increase the operation rate of the apparatus.

An object of the present invention is to make it possible to efficiently replace a component supply cassette of a component supply device with a margin.

(D) Means for Solving the Problems In view of the above, the present invention provides a table movable on a track and a part of the track by supporting a plurality of component supply cassettes and connecting with a positioning device. A work station at which a desired component supply cassette is positioned at a component pick-up position; a table exchange station also set at a part of the track; And an unmanned transfer device that transfers the table to the positioning device.

(E) Operation The table serving as a component supply is connected to a positioning device to position a desired component supply cassette to a component take-out position at a work station to supply components. If the table runs out of parts, the positioning device pulls the table into the table exchange station and separates it. Here, the unmanned transport device runs by itself, approaches and collects the table, and supplies a replacement table complete with parts instead.

(F) Example An example will be described with reference to the drawings.

FIG. 1 shows a schematic structure of the electronic component mounting apparatus 1. The electronic component mounting apparatus 1 includes a main frame 2, a component mounting section 3, a board positioning section 4, a board transport section 5, and a component supply apparatus 6.

The component mounting section 3 is mainly configured by an index table 7 that rotates indexing. Around the periphery of the index table 7, the same number of component mounting heads as the index rotation speed of the index table 7 (not shown) are arranged. Component mounting head, when arriving at the position P ₁ taken out part by indexing rotation of the index table 7, taken out an electronic component from the component feed unit 6, the next time you arrive at the component mounting position P _2, is held by the substrate positioning section 4 The electronic component is mounted on the substrate.

The substrate positioning device 4 mainly includes an XY table 8. Above the XY table 8, a pair of clamp rails 9 for clamping two sides of the substrate are arranged.

The substrate transfer device 5 includes a loader 10 and an unloader 11 arranged on both sides of the substrate positioning device 4. loader
The space between the substrate positioning device 4 and the unloader 11 is open between the device 10 and the unloader 11. The loader 10 receives a substrate from a device in a preceding process (not shown) and sends it to the substrate positioning device 4. The unloader 11 receives the substrate on which the electronic components are mounted from the substrate positioning device 4 and sends it to the next device (not shown).

Component feed unit 6 is to supply the electronic components at the component pickup position P ₁ to the component mounting portion 3, the rail base 15, and supplies the electronic parts table 17, a positioning device of the table 17
The table mounting table 18 and the positioning block 16 constituting the 14 are the main elements. The exchange of the table 17, that is, the replacement and replacement of the electronic components is performed by the unmanned transport device 19.

Next, the configuration of the component supply device 6 will be described in detail with reference to FIGS.

The rail base 15 is a main component of the component supply device 6 and is fixed on the main frame 2. On the rail base 15, a rail 21 constituting a track 20 of the table 17 is laid in parallel with the substrate transfer section 5. Table 17 is located at the center of track 20
Work station 22 is set. Table exchange stations 23 are set on both sides of the work station 22. The positioning block 16 is supported on one side by a slider 25 movable on the rail 21 and
The other side is supported by a slider 27 that moves on a rail 24 laid in parallel to the other (see FIGS. 4 and 5). Numeral 28 is a feed screw arranged between the rails 21 and 26 in parallel with them, and screwed into a nut (not shown) of the positioning block 16. A pair of bearings 29 supports the feed screw 28 on the rail base 15. Rail base 15 is attached to one end of feed screw 28
Is fixedly connected to the motor 30.

The table 17 detachably holds a plurality of component supply cassettes 31 thereon. As shown in FIG.
The table 17 has a plurality of pins 32 arranged at equal intervals on both side edges of the surface, and an angle member 33 is arranged between the pins 32. The structure of the component supply cassette 31 is described in Japanese Patent Application Laid-Open No. 63-98199.
In a similar manner to that described in Japanese Patent Application Laid-Open Publication No. H10-209, the tape enclosing the electronic components is pitch-fed by the power transmitted from the outside to supply the electronic components one by one. Parts supply cassette 31
When the operator rotates the clamp lever 35 urged clockwise in FIG. 2 by the spring of the component supply cassette 31 in the counterclockwise direction, the hook at the lower end of the lever is angled. After not touching the member 33, a hole (not shown) formed on the lower surface of the component supply cassette 31 is dropped in accordance with the pin 32, and then the clamp lever 35
And the hook portion is engaged with the angle member 33 to complete the operation. 36 is a bracket attached to the side end of the table 17,
A through hole 37 is formed in the overhang portion. The table 17 can move on the track 20 by being mounted on the table mounting table 18. FIG. 3 shows the back surface of the table 17. On the back surface of the table 17, pins 38 for regulating the position of the table 17 when the table 17 is mounted on the table mounting table 18.
And three pairs of L-shaped hooks 39 which are engaged with clamping means, which will be described later, formed on the table mounting table 18 are fixed.

Two table mounting tables 18 are arranged on the track 20. First
In the figure, one table mounting table 18 has been retracted to the table exchange station 23, and the other table mounting table 18 has the table 17 mounted thereon and is located at the work station 22. Since these two table mounting tables 18 have a symmetrical structure, the structure of the table mounting table 18 retreated to the table exchange station 18 will be described here as an example. As shown in FIG. 4, the base 45 of the table mounting table 18 is supported on the rail 21 by the slider 48. On the upper surface of the base 45, six table support plates 46A and 46B are fixed in a lattice-like manner. The table 17 is placed on the upper edge of the table support plates 46A and 46B. The positioning holes 4 into which the pins 38 of the table 17 fit are provided in the table support plate 46A.
7 (FIG. 5) is formed. On the upper surface of the base 45, a holding means 48 for the table 17 and a connecting means 49 for connecting the positioning block 16 are formed. In the holding means 48, one bell crank 51, 52, 53 is mounted rotatably on each of three support shafts 50 rising vertically from the base 45, and nuts are provided.
I'm keeping it at 54. Vertically rising protrusions are provided at both ends of two sides of the bell cranks 51, 52, 53 extending in the horizontal direction, and a roller 55 rotatable about a horizontal axis is mounted on the outer surface thereof. 56 is a bell crank
Gears mounted on the lower surface of 53 transmit power to the connecting means 49. One ends of the connecting rods 58, 59 are connected to one end of the bell crank 52 via a connecting pin 57. The connecting rod 59 crosses the arrangement line of the support shaft 50, reaches the bell crank 53, and is connected to one end of the bell crank 53 via a connecting pin 60. Similarly, the connecting rod 58 crosses the arrangement line of the support shaft 50 and reaches the bell crank 51, and the bell crank 51 is connected via the connecting pin 61.
It is connected to one end of 51. A coil spring 63 is connected to the other end of the bell crank 52 via a hook pin 62. The other end of the coil spring 63 has a hook pin 64 protruding from the base 45.
It is connected to. As a result, the bell crank 52 is urged clockwise in FIG. 5, and the bell cranks 51 and 53 are urged counterclockwise. A support shaft 65 is mounted on the other end of the bell crank 51. 66 is a bearing fixed to the base 45, and supports the sliding rod 67 in parallel with the track 21.
One end of the sliding rod 67 is connected to the support shaft 65. A hook 68 is attached to the other end of the sliding rod 67. Connecting means 49
, A support shaft 69 is erected on the base 45 adjacent to the support shaft 50 supporting the bell crank 53, and a gear 70 is mounted on the support shaft 69.
Is fixed rotatably and a nut 54 is used to prevent the lever 71 from coming off. The gear 70 meshes with a gear 56 fixed to the bell crank 53, and when the bell crank 53 rotates, the lever 71 rotates in the opposite direction to the bell crank 53. lever
A part of the projection 71 protrudes from the table mounting table 18, and a roller 72 rotatable around a vertical axis is mounted on this end. 75 is a holding means in the table exchange station 23
The drive means 48 is operated (the drive means 75 is also arranged at the other table exchange station 23). Drive means 75
Has a bracket 76 fixed to the vertical wall of the rail base 15. A support shaft 77 protrudes from the bracket 76 in the horizontal direction, and a bell crank 78 is rotatably mounted on the support shaft 77 and a nut 91 prevents the shaft from coming off. A roller 79 is mounted on the upper end of the bell crank 78. 80 is an air cylinder for driving the bell crank 78, and a bracket fixed to the rail base 15
It is attached to 81 via pins 82. Air cylinder
A joint 85 is attached to the tip of the sliding rod 83 of 80, and the lower end of the bell crank 78 is attached to this via a pin 84. Reference numeral 86 denotes a bracket attached to the rail base 15, to which a stopper bolt 87 and a shock absorber 88 are attached. 4 and 5, the roller 79 of the driving means 75 is pressed against the hook 68 of the holding means 48 and the sliding rod 67 is pressed.
Are moved toward the terminal end of the rail base 15, and the table mounting base 18 is pressed against a stopper bolt 87. The holding means 48 rotates the bell cranks 51, 52, 53 by a fixed angle against the urging force of the coil spring 63 by sliding the sliding rod 67, and the lever 71 of the connecting means 49 also rotates the bell crank.
It is rotated by a certain angle due to the rotation of 53. Unmanned transport device 19
When the positioning block 16 approaches when the table 17 is placed on the table 17 and the parts are supplied, the drive means 75 rotates the bell crank 78 clockwise to release the constraint of the lever 67. The bell cranks 51, 52, 53 of the holding means 48 are coil springs.
The roller 55 is rotated by the urging force of 63, and the roller 55 rides on the horizontal portion of the hook 39 on the lower surface of the table 17. This allows Table 17
Is prevented from being lifted up, and is completely held by the table mounting table 18. At the same time, the lever 71 of the connecting means 49 is a bell crank
The rotation of 53 rotates clockwise in FIG. 5 and fits into the recess 90 formed in the positioning block 16 (FIGS. 6 and 7). Positioning block 16 after this has led the table mounting table 18, to position the position P ₁ taken out part of the desired component supply cassette 31.

Next, the unmanned transport device 19 will be described. Unmanned transfer device
Reference numeral 19 denotes a vehicle in which a lift 95 is mounted on a self-propelled vehicle 94 which moves along an operation track tape 93 attached to the floor. Lift 95
Has a pair of guide posts 97 standing up from the carrier 46 of the self-propelled vehicle 94, and supports a fork 98 so as to be able to move up and down.
The upper portion of the guide post 97 is supported by a horizontal portion of a U-shaped bridge 99 which is attached across a carrier 96 of a self-propelled vehicle 94. 100 is a steel rope having one end connected to the horizontal portion of the bridge 99. The steel rope 100 is wrapped around a moving pulley 101 attached to a fork 98 and a constant pulley 103 supported on a horizontal portion of a bridge 99 via a bracket 102.
It is connected to a take-up drum 104 rotated by a motor (not shown) arranged at 96. Therefore, the fork 98 moves up and down by the rotation of the winding drum 104. A positioning pin 108 is mounted on the top surface of the tip of the fork 98. Table 1
7 is mounted by fitting the through holes 37 to the positioning pins 108.

Next, the unmanned transfer device 19 moves the table 17 to the table
The operation of placing the camera will be described with reference to FIGS. 9 to 11. The self-propelled vehicle 94 approaches the table exchange station 23 while being guided by the operation track tape 93. At this time, the self-propelled vehicle 94 has lifted the table 17 to a position higher than the table mounting table 18 (FIG. 9). The self-propelled vehicle 94 is stopped when the table 17 arrives just above the table mounting table 18 (FIG. 10). Next, the self-propelled vehicle 94 lowers the fork 98, and places the table 17 on the table mounting table 18. The fork 98 is lowered until the positioning pin 108 escapes from the through hole 37 of the table 17 (FIG. 11).
Thereafter, the self-propelled vehicle 94 returns to the operation center described later.

FIG. 12 shows a part of the operating track of the self-propelled vehicle 94. Reference numeral 115 denotes a board assembly line, in addition to the electronic component mounting apparatus 1,
It is composed of various peripheral devices A, B, C, D, E and F. An operation center 116 is provided in the middle of the operation track, and includes a parts management unit 117 for supplying electronic components.
And an unmanned carrier operation control unit 118 for controlling the unmanned carrier 19. The parts management unit 117 has a parts rack or parts warehouse attached. The operator 119 performs operations such as replacement of the component tape, replacement of the component supply cassette 31, or replacement of the table 17 based on the command displayed on the component management unit 117. The unmanned transport device operation control unit 118 controls the operation of the self-propelled vehicle 94 based on a command from the central control device 120 shown in FIG. The transmission of the control command is performed by a known method.

Fig. 13 shows the connection configuration of each element.
Reference numeral 120 controls not only the illustrated elements but also the entire board assembly line 115 and other board assembly lines.

Next, a series of operations of the component supply device 6 will be described with reference to FIGS. The table 17A that is not involved in component supply is waiting at the table exchange station 23 on the left. Table 17B to be used is positioning block 1
Parts are supplied on a table mounting table 18 pulled by 6 (FIG. 14). When the table 17B runs out of parts, the positioning block 16 sends the table 17B to the table exchange station 23 on the right side, and replaces the standby table.
Move to the left to connect with 17A. The self-propelled vehicle 94 approaches the table 17B by the guidance from the operation center 116 (FIG. 15). The table mounting table 18 positioned at the table exchange station 23 has released the holding of the table 17B. The self-propelled vehicle 94 receives the table 17B from the table mounting table 18 and conveys it to the operation center 116 (FIG. 16). Another self-propelled vehicle 94 carrying a table C complete with electronic components required for replacement approaches the table mounting table 18 (FIG. 17). The self-propelled vehicle 94 is returned to the operation center 116 after placing the table 17C on the table mounting table 18 (FIG. 18).

(G) Effects of the Invention According to the present invention, the component supply device is combined with an unmanned transfer device that receives the table from the positioning device in close proximity to the table exchange station or transfers the table to the positioning device. Even if the parts run out, the operator does not have to go to the machine to replace the parts supply cassette. Therefore, replenishment and replacement of parts can be performed intensively in a specific workshop, and work efficiency is improved. This effect is more remarkable as the scale of the production system increases.

In addition, since the unmanned transfer device runs by itself, when the table is transferred by the conveyor, the device including the conveyor becomes large and the installation space does not increase.

[Brief description of the drawings]

1 is a top view schematically showing the structure of the electronic component mounting apparatus, FIG. 2 is a perspective view showing the structure of the front surface of the table, FIG. 3 is a perspective view showing the structure of the back surface of the table, and FIG. FIG. 5 is a top view of the portion shown in FIG. 4, and FIG. 6 is a partial sectional front view showing a state where the table mounting table holds the table and a state where the table mounting table is connected to the positioning block. Fig. 7, Fig. 7 is a top view of the portion shown in Fig. 6, Fig. 8 is a perspective view showing the structure of the unmanned transport device, Fig. 9 is a state in which the self-propelled vehicle on which the table is mounted approaches the table mounting table. 10 and 11 are front views showing a series of operations in which the unmanned transport device places a table on a table mounting table, and FIG. 12 is a schematic top view showing a part of an operating track of a self-propelled vehicle. FIG. 13 is a block diagram showing the connection status of each element, and FIG.
14 to 18 are schematic top views showing a series of operations of the component supply device. 31 ... Component supply cassette, 14 ... Positioning device, 16 ...
Positioning block, 18 ... Table mounting table, 17 ... Table, 20 ... Track, 22 ... Work station, 23 ... Table exchange station, 19 ... Unmanned transfer device.

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23P 19/00 H05K 13/02

Claims (1)

(57) [Claims] A plurality of component supply cassettes are supported and connected to a positioning device to move a table movable on a track and a desired component supply cassette set on a part of the track to a component pick-up position. A work station to be positioned, a table exchange station also set on a part of the track, and a self-propelled approach to the table exchange station to receive a table from the positioning device or to transfer a table to the positioning device. A component supply device comprising: an unmanned transfer device that performs delivery.