JPH023664B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a carrier conveying device in an automatic soldering device, and in particular, it significantly shortens the carrier lifting distance to make the device more compact, widening the range of effective use of the factory, and smoothly moving the carrier. The present invention relates to a carrier conveying device in an automatic soldering device that moves the carrier up and down at an appropriate speed in a soldering tank.

Conventionally, in automatic soldering equipment, a carrier is generally raised and lowered in a vertical direction by an elevator mechanism, and components placed on the carrier are soldered through a series of steps. Such an elevator mechanism has disadvantages in that the distance the carrier must travel up and down becomes long, and the entire device becomes large, which narrows the range of effective use of the factory. This also lengthens the time taken to raise and lower the carrier, reducing production efficiency. In addition, the elevator mechanism has a drawback that it has a complicated structure and is prone to breakdowns, often resulting in unsmooth movement of the carrier. In addition, since there was no device to adjust the running speed and acceleration of the carrier, the proper acceleration of the carrier when the parts to be soldered placed on the carrier rise from a horizontal position in the soldering bath. As a result, the solder does not come out well, causing solder bridging or solder bulges, resulting in a deterioration in the quality of the product.

Furthermore, Japanese Patent Laid-Open No. 54-56169 discloses a method for soldering a printed circuit board, but the conventional example is
It does not move the carrier up and down, but moves it only in the horizontal direction, and is not equipped with a carrier lifting device like the present invention, so its configuration is completely different.
Furthermore, Japanese Patent Application Laid-Open No. 51-87279 discloses a transfer device, but in this conventional example, a pair of transfer sprockets are arranged with their rotating shafts shifted in position, and the front and rear ends of the pallet are respectively attached to a transfer chain. Therefore, it is impossible to lower or tilt the pallet as required, and therefore, the current configuration cannot be used in an automatic soldering device, and the present invention cannot be used. The structure is completely different. Further, Japanese Utility Model Application No. 55-148861 discloses a conveyance mechanism in an automatic soldering device, but in this conventional example, a part of the carrier is simply configured to be bendable, and the carrier can move the inclined portion through a connecting member. The disclosure merely discloses a configuration that allows the carrier to move up and down, and does not disclose any technique for lowering the carrier to the bottom of the machine and raising it to the top. The structure is completely different from the invention. Also Tokukai Akira
No. 58-60594 discloses a printed circuit board transfer device for a soldering machine, but this conventional example merely discloses a technique for raising and lowering the carrier to the process tank, and does not move the carrier up or down to the machine base. This does not disclose a device, and its configuration is completely different from the present invention. Also, JP-A-52-
36540 discloses a soldering method and its apparatus, but the conventional example is characterized by increasing the feeding speed of the printed circuit board as time passes, and only mentions changes in speed. This does not disclose a technology for changing even the acceleration. Therefore, the structure and operation and effects are different from the present invention.

The present invention has been made to eliminate the drawbacks of the prior art described above, and its purpose is to significantly shorten the lifting distance of the carrier, thereby reducing the overall height of the lifting device. The goal is to downsize the entire device and expand the range of effective use of the factory, thereby shortening the lifting and lowering time of the carrier and improving production efficiency. Another object is to divide the carrier into two parts, pivot one end of the other part to one part, and configure the other part to be bendable with respect to the other part. Another object of the present invention is to make it possible to tilt the carrier relative to the solder tank and lower or raise it, thereby enabling good soldering work.
Another object is to pivotally connect the other end of the other member of the carrier to a part of a drive chain that is wound around a pair of drive sprockets provided for conveying the carrier, so that the carrier can be soldered. To ensure smooth operation by allowing a drive chain to run linearly without bending when going up and down in a tank or the like. Another object of the present invention is to adjust the running speed and acceleration of the carrier so that the parts to be soldered placed on the carrier rise upward from the immersed horizontal state in the soldering tank. The objective is to obtain an appropriate acceleration when soldering, to improve the solder of the parts to be soldered, to prevent the occurrence of solder bridging or solder bulging, and to improve the quality of the product.

In short, the present invention (first invention) provides a pair of first drive sprockets and a pair of second drive sprockets around which a horizontally running main drive chain is wound and rotates synchronously.
a pair of first driven sprockets arranged close to the first driving sprocket and rotating synchronously with the first driving sprocket; and a second driving sprocket between the first and second driving sprockets. a pair of second drive sprockets disposed proximate to the second drive sprocket and rotating synchronously with the second drive sprocket;
a driven sprocket, a carrier body, connecting rods attached to one end and the other end of the carrier body, a movable member pivotally attached to one end of the carrier body, and a mounting shaft attached to one end of the movable member. a pair of upper guide rails attached to the machine base above each drive sprocket and each driven sprocket; and a pair of lower guide rails attached to the machine base below each drive sprocket and each driven sprocket. a rail, an arc-shaped guide plate that is continuously formed downward at one end of the upper guide rail so that the connecting rod at the one end of the carrier body is guided when the connecting rod is raised; and another of the upper guide rails. an arc-shaped guide portion formed continuously downward at one end so that the connecting rod is guided when descending;
an arc-shaped guide plate attached to the side of the second driven sprocket so that the connecting rod at one end of the carrier body is guided when the connecting rod is lowered;
The connecting rod at one end of the carrier body is pivoted so as to be openable upward near the arcuate guide plate of the upper guide rail, and the connecting rod at the other end of the carrier body is able to push it up and pass through. A closing plate placed on the upper part of the blocking plate and a connecting rod at one end of the carrier body, which is pivoted to the lower end of the arc-shaped guide plate on the side of the second driven sprocket, push this up. a rotating plate on which the connecting rod at the other end of the carrier body is placed so that the connecting rod at the other end of the carrier body can pass therethrough; and the mounting shaft of the movable member is pivotally connected to a part of the main drive chain. , an engaging pin provided on the connecting rod at the other end of the carrier main body is engaged with the first driven sprocket when the carrier is raised, and the connecting rod is guided by the arcuate guide plate; The connecting rod at one end of the main body is guided by the arcuate guide plate at one end of the upper guide rail, and the connecting rod pushes up the blocking plate to raise the carrier from the lower guide rail to the upper guide rail. ,
When the carrier is lowered, the engagement pin is
The second driven sprocket is engaged with the connecting rod at one end of the carrier body by the arc-shaped guide portion, and the arc-shaped guide plate and the rotary plate on the side of the second driven sprocket guide the carrier body. The connecting rod at the other end of the main body is guided to lower the carrier from the upper guide rail to the lower guide rail, and when the carrier is raised or lowered, the carrier is moved in parallel, and the carrier is lowered from the upper guide rail. The first and second carriers are configured to be movable in the horizontal direction on the rail and the lower guide rail without any hindrance, and are arranged in the process tank in front and behind the carrier in the traveling direction.
a pair of first receiving plates on which the connecting rod at the other end of the carrier body is placed and movable in the horizontal direction; a pair of second receiving plates on which an abutment plate fixed near one end of the carrier body is placed, and the connecting rod at the one end of the carrier body is placed in the second recess. The other end of the carrier main body is configured such that the carrier does not descend but only descends into the first recess, so that the carrier can ascend and descend obliquely into the process tank via the first and second recesses, and the other end of the carrier main body After the connecting rod has risen from the second recess, the connecting rod does not descend into the first recess but can move in the horizontal direction.

The present invention (second invention) also provides a pair of first drive sprockets and a pair of second drive sprockets around which a main drive chain running in the horizontal direction is wound and rotates synchronously, and a main drive chain that is adjacent to the first drive sprocket. a pair of first driven sprockets arranged to rotate in synchronization with the first driving sprocket;
between the first and second drive sprockets;
a pair of second driven sprockets arranged in close proximity to the driving sprocket and rotating in synchronization with the second driving sprocket; a carrier body; a connecting rod attached to one end and the other end of the carrier body, respectively; and the carrier body. a carrier comprising a movable member pivotally attached to one end and a mounting shaft attached to one end of the movable member; a pair of upper guide rails attached to the machine base above each of the drive sprocket and driven sprocket; A pair of lower guide rails are attached to the machine base below each of the driving sprockets and each driven sprocket, and a connecting rod at the one end of the carrier body is formed continuously downward at one end of the upper guide rail. an arc-shaped guide plate that guides the connecting rod when it ascends; and an arc-shaped guide portion that is continuously formed downward at the other end of the upper guide rail and guides the connecting rod when it descends. an arc-shaped guide plate attached to the side of the second driven sprocket so that the connecting rod at one end of the carrier body is guided when the connecting rod is lowered; and the arc-shaped guide plate of the upper guide rail. The connecting rod at one end of the carrier body pushes it up so that it can be opened upwardly near the carrier body, and the connecting rod at the other end of the carrier body is placed on it so that it can pass over it. A closing plate and a connecting rod at one end of the carrier body, which is pivotally connected to the lower end of the arcuate guide plate on the side of the second driven sprocket, push it up and allow it to pass through. a rotary plate on which a connecting rod is placed and can pass over the rotating plate, the mounting shaft of the movable member is pivotally connected to a part of the main drive chain, and the connecting rod at the other end of the carrier body An engaging pin provided at one end of the carrier body is engaged with the first driven sprocket when the carrier is raised, and the connecting rod is guided by the arcuate guide plate, and the connecting rod at one end of the carrier body is guided by the upper guide. The carrier is guided by the arc-shaped guide plate at one end of the rail, and the connecting rod pushes up the closing plate to raise the carrier from the lower guide rail to the upper guide rail. The connecting rod at one end of the carrier body is engaged with the second driven sprocket and the connecting rod at one end of the carrier body is guided by the arc-shaped guide portion, and the arc-shaped guide plate and the rotary plate on the side of the second driven sprocket guiding the connecting rod at the other end of the carrier body to lower the carrier from the upper guide rail to the lower guide rail, and moving the carrier in parallel when the carrier is raised or lowered;
Moreover, the carrier is configured to be movable horizontally on the upper guide rail and the lower guide rail without any hindrance, and first and second recesses are arranged in the process tank in front and behind with respect to the traveling direction of the carrier. a pair of first receiving plates are provided in the first recess on which the connecting rod at the other end of the carrier body is placed and movable in the horizontal direction; A pair of second receiving plates on which a fixed abutment plate is placed near one end of the carrier body are disposed, and the connecting rod at the one end of the carrier body is lowered into the second recess. The carrier is configured to be able to ascend and descend obliquely into the process tank via the first and second recesses so as to descend only into the first recess without touching the other end of the carrier main body. After the connecting rod rises from the second recess, the connecting rod is configured to be able to move horizontally without descending into the first recess, and the traveling speed and acceleration of the carrier can be adjusted. It is characterized by being equipped with a carrier speed adjustment device.

The present invention will be explained below based on embodiments shown in the drawings. A carrier conveyance device 1 in an automatic soldering apparatus according to the present invention is mounted on an upper half 2a of a machine base 2, and a soldering component conveyance device 3 is mounted on a lower half 2b of the machine base 2. has been done. Also machine 2
A flux tank 5 and a solder tank 6, which are examples of process tanks, are arranged in the upper half 2a.

The carrier conveying device 1 includes a pair of first driving sprockets 7, a pair of second driving sprockets 8, a pair of first driven sprockets 9, a pair of second driven sprockets 10, and a carrier 11.
It is equipped with As shown in FIG. 2, the pair of first drive sprockets 7 are arranged facing each other on the right front and back sides of the machine base 2, and are orthogonal to the longitudinal direction of the machine base 2, and It is fixed to a rotating shaft 15 rotatably supported on a table. The first drive sprocket 7 is linked to the motor 17 by a chain 19 wound between a sprocket 16 fixed to the rotating shaft 15 and a sprocket 18 attached to the motor 17, as shown in FIG. It is designed to rotate in the direction of arrow A at .

As shown in FIG. 2, the pair of second drive sprockets 8 are arranged opposite to the front and back sides of the left end of the machine base 2 and on the same plane as the first drive sprocket 7, respectively. It is fitted onto a fixed shaft 21 fixed to the. A main drive chain 22 is wound between the first drive sprocket 7 and the second drive sprocket 8, and the second drive sprocket 8 is interlocked with the first drive sprocket 7. In Figure 1, it rotates in the direction of arrow A.

As shown in FIG. 2, the pair of first driven sprockets 9 are arranged facing each other on the front and back sides of the right end of the machine base 2, and each is fixed to a pivot shaft 23 rotatably supported on the machine base 2. has been done. The first driven sprocket 9 includes a sprocket 24 fixed to the pivot shaft 23 and a sprocket 2 fixed to the rotating shaft 15.
In FIG. 1, the chain 27 is wound between the first drive sprocket 7 and the first drive sprocket 7, and the chain 27 is wound around the chain 27 with an appropriate tension applied by the tension adjustment mechanism 26 (see FIG. 4). They are designed to rotate synchronously in the direction of arrow A.

A pair of second driven sprockets 10 are connected to a first driving sprocket 7 and a second driving sprocket 8.
It is formed integrally with an intermediate sprocket 30 disposed between the main drive chain 22 so as to engage with the main drive chain 22, and is fitted onto a fixed shaft 31 fixed to the machine base 2 parallel to the rotating shaft 15. .

The carrier 11 includes a carrier body 34 and a movable member 35, as shown in FIG. 7, and the carrier body 34 has a pair of opposing frames 34a.
The frame is integrally fixed by connecting rods 36 and 37 fixed to the left and right ends. A first roller 3 is attached to the front and rear ends of the left connecting rod 36 that protrude from the frame 34a.
8 are pivotally connected to each other, and at the front and rear ends of the right connecting rod 37 protruding from the frame 34a,
An engaging pin 40 and a support pin 41, which are integral with the connecting rod, are each continuously formed. A second roller 43 is pivotally attached to the support pin 41 at a position facing the first roller 38 with the support pin partially protruding. The pair of frames 34a include a first
An abutment plate 45 is fixed to the right side of the first roller adjacent to the first roller 38.

The movable member 35, as shown in FIG. The frames 35a are integrally connected by a fixing plate 48 fixed between the frames. Further, a mounting shaft 49 is fixed to the other end of the frame, and the front and rear ends of the mounting shaft 49 protruding from the frame 35a are each pivotally mounted to a part of the main drive chain 22. Further, a locking member 52 is pivotally attached to the carrier body 11, and by fitting a pivot 47 into a groove 52a formed in the locking member,
The carrier body 11 and the movable member 35 are integrally fixed.

Further, on the machine base 2, an upper guide rail 60 and a lower guide rail 6 are arranged parallel to the longitudinal direction with the first drive sprocket 7 and the second drive sprocket 8 in between.
At the left end of the upper guide rail 60, there is formed an arcuate guide portion 60a whose end faces the vicinity of the pivot shaft 21. At the right end of the lower guide rail 61, an arcuate guide portion 61a is formed on the right side of the first driven sprocket 9, close to the outer circumference of the first driven sprocket. Further, on the right side of the first driving sprocket 7, an arc-shaped guide plate 62 that is continuous with the upper guide rail 60 is arranged, and the upper guide rail 60 interrupted by the guide plate is connected to the upper guide rail. It is designed to be closed by a closing plate 63 which is pivotally connected to. An arcuate guide plate 65 is disposed on the left side of the second driven sprocket 10 in close proximity to the outer periphery of the second driven sprocket, and the guide plate is continuous with the lower guide rail 61. ing.

Further, the upper guide rail 60 facing the second driven sprocket 10 is interrupted as shown in FIG.
A pair of support plates 66 on which 5 is placed are arranged.

and the first and second rollers 3 of the carrier 11
8 and 43 are set so as to roll on the upper guide rail 60 and the lower guide rail 61, and the engagement pin 40 of the carrier 11 is set so as to engage with the first and second driven sprockets 9 and 10, respectively. There is.

Machine stand 2 facing flux tank 5 and solder tank 6
As shown in FIG. 8, a first recess 67 and a second recess 68 each having a mountain shape are formed on the front and rear sides of the recess. In these recesses, the carrier 11
The first and second rollers 38 and 43 of the rollers are brought into contact with each other. The first recess 67 has a first receiving plate 69 that the support pin 41 of the carrier 11 comes into contact with.
is arranged, and second and third receiving plates 71 and 72 on which the abutment plate 45 of the carrier 11 is placed are formed in the second recess 68 and on the right side of the second recess. .

A carrier speed adjustment device 75 as shown in FIG. 13 is installed at an appropriate location on the machine base 2.
The carrier speed adjustment device includes five adjustment members on the control panel 76, such as a volume 77,
78, 79, 80, and 81 are provided. The volume 77 controls the time during which the printed circuit board 82, which is an example of a component to be soldered, is immersed in the solder bath 6, and the volume 78 controls the normal running time of the carrier 11. The volume 79 is for vertically moving the running speed of the printed circuit board 82 in the solder bath 6, and the volume 80 is for moving the horizontal printed circuit board 82 immersed in the solder bath 6 upward. It is designed to control the acceleration when ascending. Furthermore, the volume 81 is adapted to control the normal running speed of the carrier 11, and these volumes are all manually operated to input control signals to a microcomputer (not shown).

As shown in FIG. 1, the soldering component conveying device 3 includes a first
It consists of a conveyance device 85 and a second conveyance device 86 arranged at the left end, and the first conveyance device 85
, a belt conveyor 88 that runs in the direction of arrow B by a motor (not shown), and a hydraulic jack 89 that is an example of a lifting machine for lifting the printed circuit board 82 transported by the belt conveyor upward. is provided. Hydraulic jack 89
The printed circuit board 82 lifted by the carrier 11 is gripped by an appropriate gripping mechanism (not shown) and placed on the carrier 11. Second
The conveying device 86 is provided with a belt conveyor 92 that runs in the direction of arrow C by a motor (not shown), and the printed circuit board 82 that has been soldered is transferred from the carrier 11 to the gripping mechanism. It is gripped and placed by the handler and transported to the next process.

The present invention is configured as described above, and its operation will be explained below. When the motor 17 rotates, the first and second drive sprockets 7, 8
The first and second driven sprockets 9 and 10 rotate synchronously in the direction of arrow A as shown in FIG. Second roller 38, 43
is placed on the lower guide rail 61 and transported.

When carrier 11 reaches near the right end of platform 2,
The printed circuit board 82 is lifted in the direction of arrow E by the hydraulic jack 89, gripped by the gripping mechanism, and placed on the carrier 11.

As shown in FIGS. 3 and 4, when the carrier 11 is raised by the main drive chain 22 via the mounting shaft 49, the engagement pin 40 simultaneously engages with the first driven sprocket 9. The carrier body 34 rises in parallel by passing between the first driven sprocket and the guide portion 61a. When the carrier 11 further rises, the first roller 38 rises in the direction of arrow F along the guide plate 62, and when the movable member 35 reaches near the top dead center, the first roller 3
8 pushes the closing plate 63 upward in the direction of arrow G.

When the movable member 35 reaches the top dead center, both the first and second rollers 38 and 43 move toward the upper guide rail 60.
The carrier 11 is carried in the direction of arrow H.

When the carrier 11 reaches the vicinity of the flux tank 5, the abutting plate 45 of the carrier body 34 is first placed on the third receiving plate 72, and then placed on the second receiving plate 71, as shown in FIG. Ru. Therefore, the first
As shown in FIG. 10, when the abutment plate 45 passes over the second receiving plate 71, the first roller 38 does not descend into the second recess 68.
It comes into contact with the right inclined surface of the recess 67 and starts descending. At this time, the second roller 43 is still placed on the upper guide rail 60.

When the carrier 11 is further conveyed in the direction of the arrow H from this state, the first roller 38 and the second roller 43 are moved to the first recess 67 and the second recess 6, respectively.
The carrier main body 34 enters the flux tank 5 with the carrier main body 34 tilted forward and downward while rolling on the right inclined surface 8 in the direction of the arrow J. As shown in FIG.
When the rollers 8 and 43 reach the bottoms of the first recess 67 and the second recess 68, respectively, the carrier body 34 becomes horizontal, and the motor 17 is temporarily stopped and the flux is applied to the printed circuit board 82. Spraying work is carried out. When the spraying operation is completed, the motor 17 rotates again, and the carrier 11 is again conveyed in the direction of the arrow H, and the carrier body 34 is raised forward in the direction of the arrow K. and the twelfth
As shown in the figure, the first roller 38 is placed on the upper guide rail 60 again, but the support pin 41 is placed on the first receiving plate 69 (Fig. 8) and slides thereon. Therefore, the carrier main body 34 is conveyed in the direction of the arrow H in a horizontal state without descending into the first recess 67. Note that a roller can also be attached to the support pin 41.

The carrier 11 is then conveyed to the solder tank 6 in the next step, but the operation in this step is the same as in the case of the flux tank 5 in the previous step, and the explanation of the overlapping parts will be omitted. However, the difference is that the slope of the recess 67 on the side from which the carrier 11 rises from the solder bath 6 is gentler than that of the flux bath 5.

What is shown in FIG. 16 is a diagram showing the action of the carrier speed adjusting device 75, in which the horizontal axis shows time T;
The velocity V is shown on the vertical axis. In the figure, section P is the normal running state of the carrier 11, section Q is the stopped state of the carrier 11, and section R is from the horizontal state where the printed circuit board 82 is immersed in the solder bath 6 as shown in FIG. As shown in FIG. 15, the state of acceleration when the carrier 11 rises forward and the section S indicate the normal running state of the carrier 11. As shown in the section R, the running speed of the printed circuit board 82 is determined by the volume 79. Straight line a-a showing with a virtual line
Alternatively, it can be translated in the vertical direction along a straight line bb. Further, by using the volume 80, the acceleration when the printed circuit board 82 rises forward from the horizontal state can be changed as shown by a straight line b-a shown by an imaginary line. Since the printed circuit board 82 can be removed from the solder bath 6 at an optimum speed in this manner, the solder comes off well and defective products such as solder bridging or solder bulges do not occur.

Carrier 11, which has completed the soldering process, is transferred to machine base 2.
5 and 6, the first roller 38 descends along the guide portion 60a in the direction of the arrow L, and at the same time the second roller 4
3, the engagement pin 40 is connected to the second driven sprocket 1
0, the second driven sprocket passes between the second driven sprocket and the guide plate 65, descends along the rotary plate 65a pivotally connected to the lower end of the guide plate, and returns to the first and second driven sprockets. Two rollers 38, 43 are placed on the lower guide rail 61, as shown in FIG. Note that when the carrier 11 placed on the lower guide rail 61 is transported in the direction of arrow D,
The first roller 38 pushes up the rotary plate 65a and passes through it.

Here, the printed circuit board 82 is automatically gripped by the gripping mechanism and conveyed to the belt conveyor 92, but this operation can also be performed manually.

Carrier 11 with printed circuit board 82 removed
is conveyed in the direction of arrow D while the first and second rollers 38 and 43 roll on the lower guide rail 61. By repeating the above steps, the printed circuit board 82 placed on the carrier 11 is automatically soldered.

As described above, according to the present invention, the carrier 11 can be raised and lowered only by the upper half 2a of the machine base 2, and the height of the upper half is sufficient to be about 35 cm, compared to the conventional device. can be reduced to less than half. This shortens the lifting distance, shortens the lifting time, and greatly improves production efficiency. Furthermore, when the carrier 11 descends into the flux tank 5 or the solder tank 6, the main drive chain 22 is transported linearly and is not bent, so that the main drive chain 22 always runs smoothly. .

Since the present invention is constructed and operates as described above, the lifting distance of the carrier can be significantly shortened, the overall height of the lifting device can be reduced, the entire device can be downsized, and the factory This has the effect of expanding the range of effective use of the carrier, shortening the time required for raising and lowering the carrier, and improving production efficiency. In addition, the carrier is divided into two members, one end of which is pivotally connected to one member, and the other member is configured to be bendable with respect to the other member, so that it can be bent easily with respect to the solder tank. This has the effect of allowing the carrier to move up and down at an angle, allowing for better soldering work. In addition, since the other member of the carrier is pivotally connected to a part of the drive chain that is wound around a pair of drive sprockets provided for transporting the carrier, it can also be used when the carrier is moved up and down into a flux tank or a solder tank. Since the drive chain can run in a straight line, it has the effect of always running smoothly. In addition, since the traveling speed and acceleration of the carrier can be adjusted, the appropriate acceleration can be obtained when the parts to be soldered placed on the carrier rise upward from the horizontal state in which they are immersed in the soldering tank. As a result, the solder on the parts to be soldered becomes good, and the occurrence of solder bridging or solder bulges is eliminated, resulting in a significant improvement in the quality of the product.

[Brief explanation of drawings]

The drawings relate to embodiments of the present invention; FIG. 1 is a schematic front view of a carrier conveyance device in an automatic soldering apparatus according to the present invention, FIG. 2 is a partially omitted plan view of the carrier shown in FIG. 1, and FIG. The figure is a perspective view showing the mutual relationship between the carrier, the first driving sprocket, and the first driven sprocket when the carrier is raised;
The figure is a front view of what is shown in Fig. 3, Fig. 5 is a perspective view showing the mutual relationship between the carrier, the second driving sprocket, and the second driven sprocket when the carrier is lowered, and Fig. 6 is the same as shown in Fig. 5. front view of something,
Figure 7 is a perspective view of the carrier, Figure 8 is a partial perspective view of the lifting device of the carrier facing the flux tank or solder tank, and Figures 9 to 12 show the running state of the carrier in the flux tank or solder tank. , FIG. 9 is a schematic view of the first roller of the carrier immediately before reaching the second recess, FIG. 10 is a schematic view of the first roller of the carrier immediately after descending into the first recess, and FIG. The first and second rollers of the carrier
and a schematic diagram when it comes into contact with the bottom surface of the second recess,
Fig. 12 is a schematic view of the carrier immediately after the first roller escapes from the first recess, Fig. 13 is a schematic front view of the carrier speed adjustment device, and Fig. 14 shows the printed circuit board immersed in the solder bath. FIG. 15 is a schematic diagram showing the state in which the printed circuit board is rising forward from the state shown in FIG. 14, and FIG. 16 is a diagram showing the operating state of the carrier speed adjustment device. . 1 is a carrier conveyance device in an automatic soldering device, 5 and 6 are a flux tank and a solder tank which are examples of process tanks, 7 is a first driving sprocket, 8 is a second driving sprocket, and 9 is a first driven sprocket. , 10 is the second driven sprocket, 11 is the carrier, 22 is the main drive chain, 4 is the carrier body, 35 is the movable member, 40 is the engagement pin, 45 is the abutting plate, 67 is the first recess, 68 is the movable member. a second recess;
71 is a receiving plate, and 75 is a carrier speed adjusting device.

Claims (1)

[Scope of Claims] 1. A pair of first drive sprockets and a pair of second drive sprockets around which a main drive chain running in the horizontal direction is wound and rotated synchronously, which are arranged in close proximity to the first drive sprockets. The first
a pair of first driven sprockets that rotate synchronously with a driving sprocket; and a pair of driven sprockets that are disposed close to the second driving sprocket between the first and second driving sprockets and rotate synchronously with the second driving sprocket. a second driven sprocket, a carrier body, a connecting rod attached to one end and the other end of the carrier body, a movable member pivotally attached to one end of the carrier body, and a mounting attached to one end of the movable member. a carrier consisting of a shaft, a pair of upper guide rails attached to the machine base above each of the drive sprockets and driven sprockets, and a pair of upper guide rails attached to the machine base below each of the drive sprockets and each driven sprocket. a lower guide rail; an arcuate guide plate formed downwardly and continuously at one end of the upper guide rail so that the connecting rod at the one end of the carrier body is guided when the connecting rod is raised; and the upper guide rail. an arcuate guide part formed continuously downward at the other end and guides the connecting rod when it descends; an arc-shaped guide plate on which the connecting rod is guided when descending; and the connecting rod at one end of the carrier body is pivoted to be openable upward in the vicinity of the arc-shaped guide plate on the upper guide rail. a closing plate on which the connecting rod at the other end of the carrier body is placed so that it can pass therethrough; and an arc-shaped guide plate on the side of the second driven sprocket. a rotary plate pivotally mounted on the lower end of the carrier body so that the connecting rod at one end of the carrier body can be pushed up and passed through, and on which the connecting rod at the other end of the carrier body is placed and can pass over the rotating plate; The mounting shaft of the movable member is pivotally connected to a part of the main drive chain, and the engagement pin provided on the connection rod at the other end of the carrier body is engaged with the first driven sprocket when the carrier is raised. the coupling rod at one end of the carrier body is guided by the arcuate guide plate at one end of the upper guide rail;
The connecting rod pushes up the closing plate to raise the carrier from the lower guide rail to the upper guide rail, and engages the engagement pin with the second driven sprocket when the carrier is lowered, and The connecting rod at one end of the carrier body is guided by a guide portion, and the connecting rod at the other end of the carrier body is guided by the arc-shaped guide plate and the rotary plate on the side of the second driven sprocket. The carrier is lowered from the upper guide rail to the lower guide rail, and when the carrier is raised or lowered, the carrier is moved in parallel, and the carrier obstructs the upper guide rail and the lower guide rail in the horizontal direction. The process tank is provided with first and second recesses arranged front and rear with respect to the traveling direction of the carrier, and the connecting rod at the other end of the carrier main body is inserted into the first recess. A pair of first receiving plates are disposed on which are placed and movable in the horizontal direction, and an abutting plate fixed near one end of the carrier body is placed in the second recess. A pair of second receiving plates are disposed so that the connecting rod at the one end of the carrier body does not descend into the second recess but only into the first recess. The carrier main body is configured to be able to ascend and descend obliquely into the process tank through the first and second recesses, and after the connecting rod at the other end of the carrier body rises from the second recess, the connecting rod 1. A carrier conveyance device in an automatic soldering apparatus, characterized in that the carrier is configured to be able to move horizontally without descending into the recessed portion of No. 1. 2. A main drive chain running in the horizontal direction is wound around a pair of first drive sprockets and a pair of second drive sprockets that rotate synchronously;
a pair of first driven sprockets that rotate synchronously with a driving sprocket; and a pair of driven sprockets that are disposed close to the second driving sprocket between the first and second driving sprockets and rotate synchronously with the second driving sprocket. a second driven sprocket, a carrier body, a connecting rod attached to one end and the other end of the carrier body, a movable member pivotally attached to one end of the carrier body, and a mounting attached to one end of the movable member. a carrier consisting of a shaft, a pair of upper guide rails attached to the machine base above each of the drive sprockets and driven sprockets, and a pair of upper guide rails attached to the machine base below each of the drive sprockets and each driven sprocket. a lower guide rail; an arcuate guide plate formed downwardly and continuously at one end of the upper guide rail so that the connecting rod at the one end of the carrier body is guided when the connecting rod is raised; and the upper guide rail. an arcuate guide part formed continuously downward at the other end and guides the connecting rod when it descends; an arc-shaped guide plate on which the connecting rod is guided when descending; and the connecting rod at one end of the carrier body is pivoted to be openable upward in the vicinity of the arc-shaped guide plate on the upper guide rail. a closing plate on which the connecting rod at the other end of the carrier body is placed so that it can pass therethrough; and an arc-shaped guide plate on the side of the second driven sprocket. a rotary plate pivotally mounted on the lower end of the carrier body so that the connecting rod at one end of the carrier body can be pushed up and passed through, and on which the connecting rod at the other end of the carrier body is placed and can pass over the rotating plate; The mounting shaft of the movable member is pivotally connected to a part of the main drive chain, and the engagement pin provided on the connection rod at the other end of the carrier body is engaged with the first driven sprocket when the carrier is raised. the coupling rod at one end of the carrier body is guided by the arcuate guide plate at one end of the upper guide rail;
The connecting rod pushes up the closing plate to raise the carrier from the lower guide rail to the upper guide rail, and engages the engagement pin with the second driven sprocket when the carrier is lowered, and The connecting rod at one end of the carrier body is guided by a guide portion, and the connecting rod at the other end of the carrier body is guided by the arc-shaped guide plate and the rotary plate on the side of the second driven sprocket. The carrier is lowered from the upper guide rail to the lower guide rail, and when the carrier is raised or lowered, the carrier is moved in parallel, and the carrier obstructs the upper guide rail and the lower guide rail in the horizontal direction. The process tank is provided with first and second recesses arranged front and rear with respect to the traveling direction of the carrier, and the connecting rod at the other end of the carrier main body is inserted into the first recess. A pair of first receiving plates are disposed on which are placed and movable in the horizontal direction, and an abutting plate fixed near one end of the carrier body is placed in the second recess. A pair of second receiving plates are disposed so that the connecting rod at the one end of the carrier body does not descend into the second recess but only into the first recess. The carrier main body is configured to be able to ascend and descend obliquely into the process tank through the first and second recesses, and after the connecting rod at the other end of the carrier body rises from the second recess, the connecting rod A carrier in an automatic soldering apparatus, characterized in that a carrier speed adjusting device is provided, which is configured to be able to move horizontally without descending into the recessed part of 1, and is capable of adjusting the traveling speed and acceleration of the carrier. Conveyance device.