JPH0653304B2 - Soldering device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a soldering device that facilitates front maintenance of a solder bath or the like and enables effective use of a work space.

[Prior Art and its Problems] A pair of front and rear transport bodies (chains) for supporting and transporting both edge portions of the printed circuit board are provided on the front and rear rail members respectively, and one of them is adjusted to the width of the printed circuit board. A soldering device having a front maintenance structure, which is a rear moving rail member that can be horizontally moved in a direction orthogonal to the transport direction and a front reference rail member that fixes the other, is extremely common.

For example, as shown in FIG. 7, a rear maintenance type soldering device is assumed. This means is to pull out the solder bath 1 to the outer rear side of the rear moving rail member 2 for maintenance of the solder bath 1. In such a soldering device of the rear maintenance means, the printing is performed. The movable rail member 2 for adjusting the width of the board is horizontally moved to a position indicated by a virtual line, that is, a position close to the fixed reference rail member 3, and then the solder bath 1 is pulled out to a virtual line position for rear maintenance. Therefore, a space a required for maintenance is required between the side wall 4 of the building and the side plate of the soldering device, and this space a becomes a dead space as a work place.
It has never been possible in the industry.

The reason is that, as shown in FIG. 1, a preparation line B for inserting and mounting electronic components and the like on a printed circuit board is provided on the upstream side of the soldering device C, and on the downstream side of the soldering device C. Is connected to a finishing line D having a conveying means for cleaning and inspecting the printed circuit board which has been soldered. In the soldering equipment A having such a line structure, since all the equipment is provided such that the front side of the equipment is the working side, all the fixed reference rail members that support and convey the printed circuit board are in front of the equipment. The movable rail members, which are movable according to the size of the printed circuit board, are arranged behind the equipment. By configuring in this way and enabling front maintenance of each unit,
It is possible to install the equipment close to the wall of the work building or to install two equipment back to back.

However, as shown in FIG. 7, if the unit is pulled out to the moving rail member side of the soldering device C for maintenance, all the transfer lines of the preparation line B and the finishing line D must be adapted. Of course, all the work will move backwards,
The main reason is that not only the workability cannot be improved, but also the equipment cannot be installed near the wall or back to back as described above.

FIG. 8 shows a front part of a soldering device which is generally used for the above-mentioned reason, that is, a device which is used as front maintenance. (For example, see Japanese Utility Model Laid-Open No. 62-105755) Since this device has the reference rail member 3 fixed on the front side of the work, the innermost part of the solder bath 1 is located outside the reference rail member 3. It is necessary to pull it out, and the movement of the center of gravity of the solder bath 1 with respect to the underframe is large and becomes extremely unstable. For this reason, a spare carriage for separately supporting the solder bath 1 on the floor of the work place is required, and further, since the amount of pulling out the solder bath 1 is large, a dead space b required for front maintenance is also left. There is.

An object of the present invention is to make a reference rail member, which is in a fixed state during operation, horizontally movable in the direction of the moving rail member, and to perform front maintenance of the solder bath on the front side of the soldering device. An object of the present invention is to provide a soldering device capable of solving all the technical problems.

[Means for Solving the Problems] According to the configuration of the present invention for solving the problems of the prior art, a pair of front and rear transport bodies that support and transport both side edge portions of a printed circuit board are provided on front and rear rail members, respectively. According to the width of the printed circuit board, one is a rear moving rail member that can be horizontally moved in a direction orthogonal to the printed circuit board transport direction, and the other is a fixed front reference rail member, which is used for a unit such as a solder bath. In a soldering device in which these units are pulled out from the reference rail member side line to the front side of the work at the time of front maintenance, the reference rail member is fixed at a predetermined position during a normal soldering operation, and a solder tank, etc. The escape posture in the vicinity of the moving rail member during the front maintenance is selectively obtained.

[Embodiment] Next, details of an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory view showing an outline of a state in which the device of the present invention is incorporated in a line, FIG. 2 is a schematic explanatory view of the device of the present invention, and FIG.
FIG. 4 is a plan view of a concrete device of the same as above, FIG. 4 is a front view of the same as above, FIG. 5 is a partially cutaway side view of a driving portion, and FIG. 6 is a plan view of a solder bath frame portion.

As shown in FIG. 1, the soldering equipment A of the present invention is provided with a movable guide rail 11 capable of being horizontally moved and adjusted in a direction orthogonal to a conveyance and supply direction of the printed board according to a width of the printed board (not shown). And a fixed guide rail 12, and further, a preparation line B for inserting or mounting an electronic component or the like on a printed circuit board, and the moving guide rail 11
With respect to the movable rail member 13 capable of horizontal movement adjustment, corresponding thereto, the fixed state at a predetermined position is maintained during normal operation, and the movable rail member is maintained during maintenance of the solder bath 14.
A reference rail member 15 that is horizontally movable in 13 directions,
Flux tank 16 as a previous step during soldering work
And a finishing device D including a conveying means 18 such as a chute for cleaning and inspecting the soldered printed circuit board.

Next, the details of the soldering device C will be described with reference to FIGS.

As is apparent from FIGS. 3 and 4, 19 is a base plate horizontally installed on the work floor slab 20, and columns 21a and 21b are erected in the vicinity of the four corners of the base plate 19, respectively, and printed boards are provided. Both columns 21a on the upper hand side of conveyance are made slightly shorter than the columns 21b on the lower side of conveyance. Then, the guide rods 22 and 23 are provided as bridges between the upper ends of the front and rear columns 21a and 21b, respectively, and the movable rail member 13 and the reference rail member 15 are provided between the left and right guide rods 22 and 23, The bearing members 13a and 15a provided on the left and right ends of these members are movably suspended. Due to the height relationship between the columns 21a and 21b, the rail members 13 and 15 are inclined upward toward the printed circuit board carrying direction so that the printed circuit board is carried obliquely.

Positioning collars 24 for securing the position of the reference rail member 15 during operation are fixed to the front end portions of the both guide rods 22 and 23, and the both guide rods 22 and 23 are As shown in FIG. 3, stoppers 26, each having a ring structure for sandwiching the bearing member 15a of the reference rail member 15 in cooperation with the positioning collar 24 and having a tightening bolt 25, are slidably mounted. , The outer surface of the bearing member 15a of the reference rail member 15 is the positioning collar 2
While pressing the inner surface of 4 and pressing the outer surface of the stopper 26 against the inner surface of the bearing member 15a, fix the stopper 26 to the guide rods 22 and 23 with the tightening bolt 25.
During the soldering operation, the reference rail member 15 is placed at a predetermined position via the bearing member 15a provided on the reference rail member 15, that is, the fixed guide rail 12 of the preparation line B, and
The finishing line D is held at a position corresponding to the line of the conveying means 18. In the figure, 15b are handles provided on two upper surfaces of the reference rail member 15.

A frame 27 is erected on the support column 21a on the upper side of the upper side, and the support column on the lower side and the rear side of the frame 27 is provided.
The guide rod 2 is provided between the frame 28 and the frame 28 provided on the 21a.
The screw rod 29 parallel to 2 is rotatably mounted on the screw rod 29, and the screw rod 29 is
A sprocket 30 is provided at the front end of the
The sprocket 31 rotatably supported on the upper end of the sprocket 31 is connected by a chain 32 to the angular shaft portion 33 formed at the shaft end of the sprocket 31.
The operation handle 34 is removably connectable. In addition, the rear end portion of the screw rod 29, the moving rail member
While being screwed into the bearing member 13a provided on the upper side of 13,
A sprocket 35 is provided on the end of the screw rod 29 outside the bearing member 13a. On the other hand, a frame 36 is provided on the column 21b on the lower rear side, the rear end of the screw rod 37 parallel to the screw rod 29 is cantilevered on the frame 36, and the rear part of the screw rod 37 is attached to the lower part of the moving rail member 13. The bearing member 13a provided on the side, and further, a sprocket 38 is provided at the rear end portion of the screw rod 37. The sprocket 38 and the sprocket of the screw rod 29 are provided.
35 and the chain 39 are connected, and the operating handle of the screw rod 29
The forward and reverse driving by 34 is transmitted to the screw rod 37 via the chain 39. And the screw rod 29,37
By the action of the bearing member 13a of the moving rail member 13 screwed with the
The movable rail member 13 is horizontally moved by using the both guide rods 22 and 23 as guides.

Further, sprocket 40, 41 is horizontally supported on the left and right ends of the moving rail member 13 and the reference rail member 15, respectively, and the printed circuit board is sandwiched between the sprocket 40, 41 at the left and right ends. Chain 4 with attachment 42 for
3,44 are provided flexibly.

Next, the drive mechanism of the chains 43 and 44 will be described with reference to FIG.

45 is a drive shaft provided with a key 46 in substantially the entire length, and both ends of the drive shaft 45 are rotatably bridged between frames 47 projecting outside of the lower columns 21b, A sprocket 48 is provided at the front end of the drive shaft 45. Also,
A motor 50 is provided on a frame 49 provided on the outer side of the front column 21b, and a sprocket 51 provided at the shaft end of the motor 50 and the sprocket 48 are connected by a chain 52 to drive the motor 50. Are transmitted to the drive shaft 45. The drive shaft 45 is slidably mounted with two bevel gears 53 and 54 whose directions are different from each other. Grooves (not shown) into which the keys 46 of the drive shaft 45 are fitted are provided in the shaft holes of the bevel gears 53, 54. In addition, the bevel gears 53 and 54 are connected to the chains 43 and 44.
Is engaged with the bevel gears 57, 58 provided at the lower ends of the vertical shafts 55, 56 of the sprockets 40, 41 disposed on the lower side of the rail members 13, 15 on which the suspension is suspended, and the sprockets 40, 41 have different directions. Is provided so that the printed circuit board is conveyed by the chains 43 and 44. The set of the bevel gears 53 and 57 and the set of bevel gears 58 and 58 are respectively the box 5
It is accommodated in 9,60 and is configured to be accompanied by the horizontal movement of both rail members 13, 15.

Next, the underframe structure of the solder bath 14 will be described with reference to FIGS. 4 and 6.

61 is a base frame that is placed on the lower side upper part of the base plate 19 and has a rectangular planar shape elongated from the front to the rear, and the four corners of the base frame 61 are Sprockets
A screw cylinder 63 having 62 is vertically installed, and each screw cylinder 63 has
Struts 64 having a threaded rod structure erected on the base plate 19 are respectively screwed together, and a sprocket 62 provided on each of the screw cylinders 63.
A chain 65 is suspended and suspended. Further, a nut portion (not shown) with which a turning jig is engaged is formed in the lower part of the one screw cylinder 63 on the front surface, and the nut portion is turned by the jig, that is, one nut. By rotating the screw cylinder 63, all the screw cylinders 63 are rotated through the chain 65, and the screw cylinders 63 are moved to the respective columns 64.
The vertical movement of the underframe 61 is adjusted along the vertical direction. In the figure, 62a is a sprocket for tension.

Further, inside the left and right side plates 61a constituting the underframe 61 in the front-rear direction, a hood 61b parallel to the side plate 61a is provided with an appropriate interval, and between the frame 61b and the side plate 61a,
A roller 66 projecting upward from the upper surface of the frame 61b is provided axially at appropriate intervals, and the solder bath is placed on the roll 66.
The lower bottom portions of both sides of 14 are mounted, and the solder bath 14 can be moved in the front-rear direction. On the upper surface of the underframe 61, a movable frame 67, which has substantially the same shape and size as the underframe 61 and surrounds the solder bath 14 placed on the underframe 61, is mounted and the underframe 61 is Pins 69 to be inserted into the guide slots 68 provided on both long sides of the movable frame
The long sides of 67 are hung vertically so that the movable frame 67 does not move laterally with respect to the underframe 61. A screw rod 70 is rotatably supported below the center of the front edge of the movable frame 67, and is provided in parallel with the long side of the movable frame 67. Screwed to a nut member 71 provided on the steering wheel 70, and further, a square shaft portion 72 is provided at the front end of the screw rod 70, and the operation handle 34 is removably connected to the square shaft portion 72. By this, the movable frame 67 is moved in the arrow direction, and the solder bath 14 on the roller 66 of the underframe 61 is moved back and forth. still,
In the figure, 73 is a housing.

Further, in the figure, 74 is a tightening bolt screwed on both sides of the front end edge of the movable frame 67, and the tip of this tightening bolt 74 is pressed against the front surface of the solder tank 14 so that the rear wall surface of the solder tank 14 is movable frame 67. It is pressed against the inner surface of the rear end edge of the movable frame 67 to prevent the solder bath 14 from moving in the movable frame 67.

[Effects of the Invention] According to the configuration of the present invention as described above, the following effects can be obtained.

(a) With the reference rail member in a fixed posture, while the other moving rail member is moved and adjusted according to the width of the printed circuit board to be soldered, the printed circuit board can be soldered continuously. (B) the reference rail member that constitutes the soldering device has a fixed posture at a predetermined position during normal soldering operation and an escape posture that is close to the moving rail member during front maintenance such as a solder bath. Since it is configured so as to be selectively obtained, for example, during front maintenance of the solder bath, as shown by the phantom line in FIG. By moving, the entire upper surface of the solder bath can be released. Therefore, the amount of pulling out the solder bath to the front is small, and there is no need to provide a separate spare truck other than the solder bath underframe in the apparatus as in the prior art, which reduces equipment costs and reduces maintenance efficiency. Can be improved.

(c) Since there is almost no dead space in the workplace,
Economical effects are significant, such as a reduction in the size of the workshop building.

(d) Two soldering devices can be installed side by side in a back-to-back manner, which makes effective use of the work space and produces almost no dead space.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an outline of a state in which the device of the present invention is incorporated in a line, FIG. 2 is a schematic explanatory view of the device of the present invention, and FIG.
FIG. 4 is a plan view of a concrete device, FIG. 4 is a front view of the same, FIG. 5 is a partially cutaway side view of a driving part, FIG. 6 is a plan view of a solder bath underframe part, FIG. FIG. 8 is an explanatory diagram of a conventional example. A: Soldering equipment, B: Preparation line, C: Soldering device, D: Finishing line, 13: Moving rail member, 13a
…… Bearing member, 14 …… Solder bath, 15 …… Reference rail member,
15a ... Bearing member, 16 ... Flux tank, 17 ... Preheater, 18 ... Transportation means, 19 ... Bed plate, 21a, 21b ... Posts, 22,23 ... Guide rod, 24 ... Positioning collar, 2
5 …… Tightening bolt, 26 …… Stopper, 29 …… Screw rod, 3
0 …… sprocket, 31 …… sprocket, 32 …… chain, 34 …… operation handle, 35 …… sprocket, 37 ……
Screw rod, 38 …… sprocket, 39 …… chain, 40,41 ……
Sprocket, 42 ... Attachment, 43, 44 ... Chain, 45 ... Drive shaft, 50 ... Motor, 53, 54 ... Bevel gear, 57, 58 ... Bevel gear, 59, 60 ... Box, 61 ...
Underframe, 62 ... sprocket, 63 ... screw cylinder, 64 ... support, 65 ... chain, 66 ... roller, 67 ... movable frame, 70 ...
… Screw rod, 71… Nut member.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Mikio Ishii 7-13-8 Ginza, Chuo-ku, Tokyo Hirokiuchi Stock Company (72) Nobuo Toshida 167 Totsuka-cho, Totsuka-ku, Yokohama, Kanagawa Sato In-house (56) References JP-A-62-166599 (JP, A) Practical use Sho-62-105755 (JP, U)

Claims (1)

[Claims] 1. A pair of front and rear conveyors for supporting and conveying both side edges of a printed circuit board are provided on respective front and rear rail members, one of which is aligned with the width of the printed circuit board and is orthogonal to the direction of conveyance of the printed circuit board. In addition to a rear moving rail member that can move horizontally in the same direction, the other is used as a fixed front reference rail member, and these units are moved from the reference rail member side line to the work front side during front maintenance of units such as solder baths. In the soldering device that is pulled out, the reference rail member is fixed at a predetermined position during a normal soldering operation, and an escape position close to the moving rail member during front maintenance such as a solder bath is selected. A soldering device, characterized in that