JP3630302B2 - Engine assembly line - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of an engine assembly line for assembling an engine by a flow operation.
[0002]
[Prior art]
The engine assembly line for assembling the engine by a flow operation is a line in which the engine is assembled in a linear flow through all processes in the order of the assembly process. As such an engine assembly line, for example, Japanese Unexamined Patent Publication No. 2000-6816, “Work Assembly Cart” (hereinafter referred to as “conventional technology”) is known.
[0003]
In the conventional technique, as shown in FIG. 1 of the same publication, a work that can swing from a horizontal position to a vertical position on a support base 4 of a carriage 1 (the reference is quoted in the publication). The positioning table 7 is attached, and the workpiece W that becomes the frame of the engine is set at the tip of the workpiece positioning table 7. The engine can be assembled while the carriage 1 is moved sequentially.
[0004]
[Problems to be solved by the invention]
By the way, there are various types of engines, and the sizes differ depending on the types. For example, engines mounted on outboard motors range from a small size of about 1 kW to a large size of about 100 kW.
However, the above-described conventional technology does not assume that engines having greatly different sizes from small to large are assembled in one engine assembly line. On the other hand, it is conceivable to prepare a plurality of engine assembly lines corresponding to the size of the engine, but this is not a good idea because the equipment cost increases significantly.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a technique capable of efficiently assembling engines having greatly different sizes on one engine assembly line.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, claim 1 provides an engine assembly line for assembling an engine in a flow operation.20In the engine assembly line20A large engineE1Multiple first assembly tables110And medium engineE2And small enginesE3Multiple second assembly bases to set and assemble130And the engine assembly line20Are arranged alternately along the second assembly table.130In the set jig, the removable size is the same136, 137Or set jigs with different sizes136, 1372 medium and small engines viaE2, E3Two small mounting bases that can be set134, 135Provided,
The first assembly table1101 unitlargeengineE3Set and assembleThat
Or said 2nd assembly stand1302 small assembly stand134, 135Medium and small enginesE2 / E3Set one of these to assemble one engineabout,
Or the two small assembly bases134, 135Medium and small enginesE2 / E3Assemble two engines with the same size at the same timeabout,
Or the two small assembly bases134, 135Medium engineE2And small engineE3Assemble two engines of different sizes at the same timeabout,
To be able to select any one of the above engine assembliesIt is characterized by comprising.
[0007]
When assembling a large engine, the first assembly stand110Large engineE3Set. Meanwhile, medium and small enginesE2 / E3When assembling the second assembly stand130One or two medium and small engines on a small assembly standE2 / E3Set.
In general, the assembly time for medium and small engines is significantly less than the assembly time for large engines. Therefore, the second assembly table1302 medium and small enginesE2 / E3It is possible to set and assemble. (1) Large engine in one engine assembly lineE3The first assembly table110Set one by one in the second assembly stand130(2) Either the small or medium-sized engine can be attached to the second assembly base via a set jig of the same size that can be attached to and detached from130(3) Both small and medium engines can be assembled in the second assembly stand.130Assemble two engines of different sizes at the same time, or (4) Medium or small engineE2 / E3Either of the second assembly table130Two engines can be set together and two engines can be assembled at the same time.
The engine is assembled by selecting any of the above (1) to (4).Therefore, engines having significantly different sizes can be efficiently assembled on one engine assembly line.
[0008]
Furthermore, when two small and medium engines are set on the second assembly table and assembled at the same time,(1)In the time required to assemble one large engine,(2)Two medium and small engines can be assembled. For this reason,(1)Assembly man-hours and above(2)The assembly man-hours can be made substantially uniform. As a result, variations in assembly man-hours can be eliminated, and assembly efficiency can be further increased.
[0009]
A second aspect of the present invention provides the large engine according to the first aspect.E1Work space on the back side when settingSpThe large engine set by providingE1Large assembly stand117A large assembly stand configured to allow engine assembly work by extending the hand from the back side117And this large assembly stand117Swing mechanism that swings the camera from the horizontal position to the vertical position118And the large assembly stand117Rotating mechanism that rotates 360 °115First assembly table having110It is provided with.
Since the hand can be extended to the large engine from the back side of the large assembly stand, the engine can be assembled in an easy posture. Therefore, the burden on the operator can be further reduced, and the large engine can be assembled more efficiently.
And the attitude | position of the large sized engine which is a heavy article can be arbitrarily changed by operating a swing mechanism and a rotation mechanism. Therefore, the worker can freely change the posture of the large engine according to the assembly work and proceed with the work. Since the work can be performed in an easy posture, the burden on the operator can be further reduced, and the large engine can be assembled more efficiently.
[0010]
A third aspect of the present invention provides the two small assembly bases according to the first aspect.134, 135The above-mentioned medium and small engines on the topE2 / E3This is a turntable that can be rotated horizontally by setting a rotation restricting member for restricting rotation of this turntable at an arbitrary angle.138And turn the turntable to turn the medium / small engineE2 / E3It is characterized in that it can be assembled by changing its posture.
By turning the turntable, the attitude of small and medium-sized engines can be changed arbitrarily. Therefore, the worker can freely change the posture of the medium / small engine according to the assembling work and proceed with the work. Since it is possible to work in an easy posture, it is possible to further reduce the burden on the operator and to assemble a small / medium-sized engine more efficiently.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a schematic view of an outboard motor production facility according to the present invention, and shows an outline of the outboard motor production facility 10 in a perspective view.
[0012]
The outboard motor production facility 10 is an engine for assembling outboard motor engines E1..., E2..., E3. The assembly line 20 and the outboard motor assembly lines 30 for assembling outboard motors B1 and B2 of different sizes using the assembled outboard motor engines E1,..., E3,. And the outboard motor performance inspection line 40 for inspecting the performance of the assembled outboard motors B1..., B2. The outboard motor delivery line 50 that delivers to the shipping line 60 in a flow operation is continuously arranged in this order.
The outboard motor engines E1,..., E2,..., E3.
[0013]
The engine assembly line 20 supplies the basic device Eb... Of the engine such as a cylinder block and the engine E1... E2. A first transfer device 22 for transferring to
The supply device 21 is an assist machine that assists the labor of the worker M when supplying the basic components Eb.
The first transfer device 22 is, for example, a power hoist used by the worker M when transferring the completed engines E1,..., E2,.
[0014]
In such an engine assembly line 20, the basic parts Eb... Supplied from the supply device 21 are set first, and the engine parts are sequentially assembled to these basic parts Eb. As a result, the engines E1,..., E2,..., E3, etc. are assembled, and the assembled engines E1,. It is an apparatus that is continuously transferred to the machine assembly line 30 by a flow operation.
[0015]
The outboard motor assembly line 30 first adds outboard motor set parts such as a stern bracket (not shown) and engines E1,..., E2,.ToBy installing the outboard motor parts to the outboard motor set parts and engines E1,..., E2,. .., B2..., And the assembled outboard motors B1,..., B2... Are continuously conveyed to the outboard motor performance inspection line 40 as they are.
[0016]
The performance inspection on the outboard motor performance inspection line 40 includes a performance inspection performed while putting the outboard motors B1... B2. Above the outboard motor performance inspection line 40, a loop-like inspection device transport device 43 for transporting the inspection devices 42 is disposed. The inspection equipment 42... Includes various inspection equipment and batteries for inspecting the outboard motors B 1.
[0017]
The outboard motor delivery line 50 includes a second transfer device 51 that transfers the inspected outboard motors B1,..., B2,. The outboard motor delivery line 50 can deliver the outboard motors B1,..., B2,... To the shipping area of the shipping line 60 or the shipping cart 61 via the second transfer device 51.
The second transfer device 51 is, for example, a power hoist used by the worker M when transferring the outboard motors B1... B2.
[0018]
FIG. 2 is a plan view of the outboard motor production facility according to the present invention, and shows the arrangement relationship of the outboard motor production facility 10.
The outboard motor assembly line 30, the outboard motor performance inspection line 40, and the outboard motor delivery line 50 share one outboard motor transfer device 70 in a planar view as a loop. That is, the outboard motor transport device 70 is configured to transport the outboard motors B1... B2. The outboard motors B1,..., B2,... Are delivered to the shipping line 60 by the second transport path 72 that transports the outboard motors B1,. And a third transport path 73 for transporting as much as possible.
[0019]
The first conveyance path 71, the second conveyance path 72, and the third conveyance path 73 are one linear conveyance path that is continuous in this order, and a large number of outboard motor assemblies in which the outboard motors B1 and B2 are set. It becomes a passage through which the carriage 200.
The outboard motors B1..., B2... Are transported at a very low speed by the outboard motor transport device 70, thereby (1) outboard motors while transporting the outboard motors B1. Assembling in the assembly line 30, (2) continuously inspecting in the outboard motor performance inspection line 40 while conveying the outboard motors B1,..., B2,. ..., B2 ... can be conveyed to the outboard motor delivery line 50.
[0020]
The outboard motor production facility 10 can perform the flow operation, the speed of the engine assembly line 20, the speed of the supply device 21, the speed of the first transfer device 22, the speed of the outboard motor assembly line 30, The speed of the outboard motor performance inspection line 40, the speed of the outboard motor delivery line 50, and the speed of the second transfer device 51 are all synchronized, that is, the mutual line speeds are synchronized.
[0021]
In the outboard motor assembly line 30, assembly work stages 91 and 92 are installed on both sides along the first conveyance path 71, so that an operator M... Stands on these assembly work stages 91 and 92. I was able to work. Furthermore, a work table 95... Is installed in a space on the opposite side of the first transfer path 71 adjacent to the assembly work stages 91 and 92 so that an auxiliary work can be performed.
In the figure, 96..., 97.
[0022]
FIGS. 3A and 3B are configuration diagrams of the engine assembly line according to the present invention. FIG. 3A shows a plan configuration of the engine assembly line 20 and FIG. 3B shows a side configuration of the engine assembly line 20. .
The engine assembly line 20 is a loop-type chain conveyor type device that is elongated in plan view as shown in FIG. 4A, and drives the drive chain 102 counterclockwise (in the direction of the white arrow) by the electric motor 101. It is.
[0023]
The engine assembly line 20 includes a plurality of first assembly tables 110... And a plurality of second assembly tables 130... Alternately arranged along the engine assembly line 20 at a predetermined constant pitch P1. , And is connected to the same drive chain 102. The first assembly table 110 is a table on which the large engine E1 is set and assembled. The second assembly table 130 is a table for assembling a medium-sized engine or a small engine (not shown).
[0024]
FIG. 4 is a side view of the first and second assembly tables of the engine assembly line according to the present invention. The upper and lower guide rails 103 and 104 extending along the engine assembly line 20 allow the first and second assembly tables 110 and It is shown that the travel of 130 is guided and that the first and second assembly tables 110 and 130 are connected to the drive chain 102.
[0025]
The first assembly table 110 includes a traveling carriage 111 movably attached to the upper and lower guide rails 103 and 104, a base 112 attached to the traveling carriage 111, and upper and lower via bearings 113 and 114 on the base 112. The rotating mechanism 115 is mounted so as to be swingable, the large assembly base 117 is rotatably mounted on the tip of the rotating mechanism 115, and the swing mechanism 118 is mounted on the base 112 for swinging the rotating mechanism 115.
[0026]
The rotation mechanism 115 includes a first handle 121 that is a round handle, and a first transmission mechanism 122 that rotates the large assembly base 117 by the operating force of the first handle 121.
The first transmission mechanism 122 is a gear mechanism having a self-locking function, for example, a worm gear mechanism. The self-locking function is a function for preventing the force from the large assembly base 117 on the load side from being transmitted to the operation side. Since it has a self-locking function, the large assembly stand 117 in a stopped state does not rotate without operating the first handle 121.
[0027]
The swing mechanism 118 includes a second handle 124 having a relatively small diameter formed of a round handle, a bar-like third handle 125 having an operation span (handle length) larger than that of the second handle 124, and the second and third handles. An operation shaft 126 that is rotated by 124 and 125, and a second transmission mechanism 128 that transmits the rotation of the operation shaft 126 to the transmission shaft 127 and swings the rotation mechanism 115.
[0028]
The second transmission mechanism 128 is a gear mechanism having a self-locking function, for example, a worm gear mechanism. Since it has a self-locking function, the rotating mechanism 115 in the stopped state does not swing without operating the second and third handles 124 and 125.
[0029]
The second assembling table 130 includes a traveling carriage 131 attached to the upper and lower guide rails 103 and 104 so as to be able to run, a base 132 attached on the traveling carriage 131, and a plurality of supporting rolling ball mechanisms on the base 132. .., And two small assembly bases (first small assembly base 134 and second small assembly base 135).
[0030]
These first and second small mounting tables 134 and 135 are turntables that can be rotated horizontally, and can be assembled by setting the engines E2 and E3 via engine setting jigs 136 and 137 indicated by imaginary lines. . For example, the medium engine E2 is set on the first small assembly base 134 via the medium engine setting jig 136, or the small engine E3 is set on the second small assembly base 135 via the small engine setting jig 137. .
[0031]
FIG. 5 is a plan view of the first and second assembly tables of the engine assembly line according to the present invention, and shows that the second assembly table 130 is provided with two rotation restricting members 138 and 138. These rotation restricting members 138 and 138 are members that restrict the rotation of the first and second small assembly tables 134 and 135 individually at an arbitrary angle.
[0032]
Specifically, the first and second small mounting tables 134 and 135 are provided with locking recesses 134a... 135a. By fitting the tip of the rotation restricting member 138 into one of the locking recesses 134a... 135a..., The first and second small mounting bases 134 and 135 are restricted from rotating at an arbitrary angle. can do. Moreover, the front-end | tip part of the rotation control member 138 can be removed from the latching recessed parts 134a ..., 135a ... by pulling the knob 138a of the rotation control member 138.
[0033]
6 is a sectional view taken along line 6-6 of FIG. By rotating the first handle 121, the large assembly base 117 can be rotated 360 ° via the first transmission mechanism 122 and can be stopped at an arbitrary angle.
[0034]
On the other hand, by rotating the second and third handles 124 and 125 to swing the rotating mechanism 115 up and down, the large assembly base 117 is swung up and down from the horizontal position shown by the solid line to the vertical position shown by the imaginary line. And can be stopped at an arbitrary swing angle.
To finely adjust the posture of the engine E1 set on the large assembly stand 117, the second handle 124 is operated. Further, when the posture of the engine E1 is largely adjusted, the bar-shaped third handle 125 having an operation span larger than that of the second handle 124 is operated.
[0035]
By operating the rotation mechanism 115 and the swing mechanism 118, the posture of the heavy-duty engine E1 that is a heavy object can be arbitrarily changed. Therefore, the worker can freely change the posture of the large engine E1 according to the assembling work and proceed with the work. Since the work can be performed in an easy posture, the burden on the operator can be further reduced, and the large engine E1 can be more efficiently assembled.
[0036]
FIGS. 7A and 7B are configuration diagrams of a large assembly base according to the present invention, FIG. 7A is a perspective view of the large assembly base 117, and FIG. is there.
The large assembling table 117 is attached to a rotating disk 141 attached to the rotating mechanism 115, four support pillars 142 extending outward from the rotating disk 141, and tip ends of these supporting pillars 142. Mounting plate 143.
[0037]
The mounting board 143 is such that the large engine setting jig 144 is detachably attached to the board surface. By setting the large engine E1 on the large engine setting jig 144, the large engine E1 can be set on the large assembly base 117. The mounting board 143 and the large engine setting jig 144 have working holes 143a and 144a that penetrate therethrough. 144b and 144b are handles.
[0038]
By the way, the large assembly base 117 is provided with a work space Sp on the back side, so that the hand Ha shown by an imaginary line is extended from the back side of the large assembly base 117 to the set large engine E1 and the work hole 143a. , 144a, engine assembly work can be performed.
Specifically, the work space Sp is an open space surrounded by the rotating plate 141, the four support pillars 142, and the mounting plate 143, and the size of the space is the rotating plate 141 and the mounting plate. It corresponds to the length Ln between 143 and 143.
[0039]
Since the hand Ha can be extended from the back side of the large assembly stand 117 to the large engine E1, the engine assembly work can be performed in an easy posture. Therefore, the burden on the operator can be further reduced, and the large engine E1 can be more efficiently assembled.
[0040]
8 is a cross-sectional view taken along line 8-8 of FIG. 4 and shows a guide mechanism 150 for guiding the travel of the first assembly table 110 and a drive chain mechanism 160 for driving the first assembly table 110. FIG.
The guide mechanism 150 of the first assembly base 110 includes a fixed base 151 installed on the floor FR, upper and lower guide rails 103 and 104 attached to the fixed base 151, guide rollers 154 attached to the traveling carriage 111, 155... And a supporting roller (running roller) 156. The upper and lower guide rails 103 and 104 are bars that are vertically long in a sectional view.
[0041]
More specifically, the traveling carriage 111 of the first assembly base 110 is a substantially inverted L-shaped member in cross-section, and brackets 152 and 153 are attached to the upper and lower sides, and a pair of left and right guide rollers are attached to the brackets 152 and 153, respectively. 154... 155 are rotatably attached, and a support roller 156 is rotatably attached to the upper bracket 152.
[0042]
The pair of upper left and right guide rollers 154 and 154 are set so that both side surfaces of the upper guide rail 103 are sandwiched from the left and right by the outer peripheral surfaces of these rollers. The pair of lower left and right guide rollers 155 and 155 are set so that both side surfaces of the lower guide rail 104 are sandwiched from the left and right by the outer peripheral surfaces of these rollers. The supporting roller 156 is set so that it can run on the upper surface of the upper guide rail 103. By setting in this way, the first assembly table 110 can travel while being guided by the fixed upper and lower guide rails 103 and 104.
[0043]
FIG. 9 is a side view of the drive chain mechanism according to the present invention and corresponds to the configuration shown in FIG.
The drive chain mechanism 160 includes a drive chain 102 that is horizontally stretched and moves from right to left in the drawing, a drive convex portion 161 that is attached to the top of the drive chain 102, and a traveling carriage 111 of the first assembly stand 110. It consists of a pair of attached hooking claws 162 and 162. The drive chain 102 is a link chain that can be bent in the direction of the back of the figure.
[0044]
The pair of hooking claws 162 and 162 are arranged along the extending direction of the drive chain 102 and are elongated bars in the extending direction of the drive chain 102, and their base ends are attached to the pins 163 and 163 so as to be able to swing up and down. The drive convex part 161 is interposed between them and the tip parts face each other. Further, these hooking claws 162 and 162 are springed by return springs 164 and 164 in a direction in which the tip end is hooked on the driving convex portion 161. The maximum swing angle due to the impact is set by the base end portions of the hooking claws 162 and 162 hitting the traveling carriage 111.
[0045]
In addition, by swinging the operation lever 165 and rotating the cam 166, one of the hooking claws 162 can be lifted against the elastic force of the return springs 164 and 164 and removed from the driving convex portion 161. However, it is optional to provide a configuration in which the hooking claw 162 is removed from the driving convex portion 161 with the operation lever 165 in this way.
[0046]
10 is a cross-sectional view taken along line 10-10 of FIG. 4 and shows a guide mechanism 171 for guiding the traveling of the second assembly table 130 and a drive chain mechanism 175 for driving the second assembly table 130. FIG.
The guide mechanism 171 of the second assembly table 130 has the same configuration as the guide mechanism 150 of the first assembly table 110 shown in FIG. 8, and includes a fixed table 151, upper and lower guide rails 103 and 104, and a traveling carriage 131. .., 155... And a supporting roller 156.
[0047]
The traveling carriage 131 of the second assembly base 130 is a substantially inverted L-shaped member in cross section, and brackets 172 and 172 are attached to the top and bottom, and a pair of left and right guide rollers 154. , 155... Are rotatably attached, and a support roller 156 is rotatably attached to the upper bracket 172.
By mounting in this way, the second assembly table 130 can travel while being guided by the fixed upper and lower guide rails 103 and 104.
[0048]
The drive chain mechanism 175 of the second assembly table 130 has the same configuration as the drive chain mechanism 160 of the first assembly table 110 shown in FIG. However, it is optional to have a configuration in which the hooking claw 162 is removed from the driving convex portion 161 by the operation lever 165 shown in FIG.
By the way, the 2nd assembly stand 130 is provided with the jig | tool storage box 176 which accommodates the some large sized engine setting jig | tool 144 .... These large engine setting jigs 144 are spare engine setting jigs to be replaced when the type of the large engine E1 shown in FIG. 7 is changed.
[0049]
Next, the operation of the first and second assembly tables 110 and 130 in the engine assembly line 20 configured as described above will be described with reference to FIGS.
FIG. 11 is a diagram for explaining the operation of the first and second assembly tables according to the present invention (part 1), and shows that the large engine E1 is set on the first assembly table 110 via the large engine setting jig 144. .
[0050]
FIG. 12 is a diagram for explaining the operation of the first and second assembly tables according to the present invention (No. 2). The first small assembly table 134 of the second assembly table 130 is connected to the first small assembly table 134 via the medium-sized engine setting jig 136. It shows that the small engine E3 is set via the small engine setting jig 137 on the second small assembly table 135 of the second assembly table 130 while the medium engine E2 is set.
Note that the small engines E3 and E3 can be set on both the first small assembly base 134 and the second small assembly base 135, respectively.
[0051]
FIG. 13 is a diagram for explaining the operation of the first and second assembly tables according to the present invention (part 3). The first small assembly table 134 of the second assembly table 130 is connected to the first small assembly table 134 via the medium-sized engine setting jig 136. It shows that the medium-sized engine E2 is set.
[0052]
FIG. 14 is a diagram for explaining the action and action of the first and second assembly tables according to the present invention (No. 4). The small engine E3 is set.
[0053]
The above description is summarized as follows.
When assembling the large engine E1, the large engine E1 is set on the first assembly table 110. On the other hand, when assembling the medium-sized engine E2 and the small engine E3, one or two medium / small engines E2 and E3 are set on the first and second small assembly tables 134 and 135 of the second assembly table 130.
[0054]
In general, the assembly time of the medium and small engines E2 and E3 can be significantly reduced compared to the assembly time of the large engine E1. Therefore, it is possible to set two small and medium engines E2 and E3 on the second assembly table 130 and assemble them simultaneously. In one engine assembly line 20, (1) one large engine E1 is set on the first assembly table 110 and assembled, and (2) either the medium engine E3 or the small engine E2 is installed on the second assembly table 130. To set one engine and (3) set two (both) medium and small engines E2 and E3 on the second assembly table 130 and assemble two engines of different sizes at the same time (4) Two engines of the same size can be assembled at the same time by setting two of the medium-sized engine E2 or the small engine E3 on the second assembly table 130. Therefore, the engines E1, E2, and E3 having significantly different sizes can be efficiently assembled on one engine assembly line 20.
Set the medium-sized engine E2 and the small-sized engine E3 having different sizes to the second assembly table 130, one of the medium-sized engine E2 and the small-sized engine E3, or one of the two second-assembled tables 130. Is set by selecting detachable setting jigs 136 and 137.
As described above, any one of the above (1) to (4) is selected to assemble the engine.
[0055]
Furthermore, as described above, when two small and medium engines E2 and E3 are set on the second assembly stand 130 and assembled at the same time,(1)In the time required to assemble one large engine E1,(2)Two medium and small engines E2 and E3 can be assembled. For this reason, the assembly man-hour of the circle 1 and the assembly man-hour of the circle 2 can be made substantially uniform. As a result, variations in assembly man-hours can be eliminated, and assembly efficiency can be further increased.
[0056]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
Claim 1 is an engine assembly line for assembling an engine in a flow operation.20In the engine assembly line20A large engineE1Multiple first assembly tables110And medium engineE2And small enginesE3Multiple second assembly bases to set and assemble130And the engine assembly line20Are arranged alternately along the second assembly table.130In the set jig, the removable size is the same136, 137Or set jigs with different sizes136, 1372 medium and small engines viaE2, E3Two small mounting bases that can be set134, 135Provided,
The first assembly table1101 unitlargeengineE3Set and assembleThat
Or said 2nd assembly stand1302 small assembly stand134, 135Medium and small enginesE2 / E3Set one of these to assemble one engineabout,
Or the two small assembly bases134, 135Medium and small enginesE2 / E3Assemble two engines with the same size at the same timeabout,
Or the two small assembly bases134, 135Medium engineE2And small engineE3Assemble two engines of different sizes at the same timeabout,
To be able to select any one of the above engine assembliesBecause it is configured, when assembling a large engine, set the large engine on the first assembly stand and assemble, and when assembling a medium or small engine, one or two of the small assembly stand of the second assembly stand A small engine can be set and assembled.
[0057]
In general, the assembly time for medium and small engines is significantly less than the assembly time for large engines. Therefore, it is possible to set and assemble two medium / small engines on the second assembly table.
In particular, in the present invention, in one engine assembly line, (1) a large engine is set and assembled one by one on the first assembly base, or a set that is detachable from the small assembly base of the second assembly base is the same. (2) Set one of the medium and small engines on the second assembly table one by one on the second assembly table via a jig or a set jig of different size, ) Set both the medium and small engines on the second assembly stand, and assemble two engines of different sizes at the same time. (4) Place either the medium or small engine on the second assembly stand. Two engines of the same size can be assembled at the same time by setting two.
By assembling the engine by selecting any one of (1) to (4) above,Engines having significantly different sizes can be efficiently assembled on one engine assembly line.
[0058]
Furthermore, when two small and medium engines are set on the second assembly table and assembled at the same time,(1)In the time required to assemble one large engine,(2)Two medium and small engines can be assembled. For this reason,(1)Assembly man-hours and above(2)The assembly man-hours can be made substantially uniform. As a result, variations in assembly man-hours can be eliminated, and assembly efficiency can be further increased.
[0059]
Claim 2 is the large engine according to claim 1E1Work space on the back side when settingSpLarge engine set by installingE1Large assembly stand117A large assembly stand configured to allow engine assembly work by extending the hand from the back side117And this large assembly stand117Swing mechanism that swings the camera from the horizontal position to the vertical position118And large assembly stand117Rotating mechanism that rotates 360 °115First assembly table having110Since the hand can be extended to the large engine from the back side of the large assembly stand, the engine can be assembled in an easy posture. Therefore, the burden on the operator can be further reduced, and the large engine can be assembled more efficiently.
Further, by operating the swing mechanism and the rotation mechanism, the posture of the large engine that is a heavy object can be arbitrarily changed. Therefore, the worker can freely change the posture of the large engine according to the assembly work and proceed with the work. Since the work can be performed in an easy posture, the burden on the operator can be further reduced, and the large engine can be assembled more efficiently.
[0060]
A third aspect of the present invention provides the two small assembly bases according to the first aspect.134, 135The above-mentioned medium and small engines on the topE2 / E3This is a turntable that can be rotated horizontally by setting a rotation restricting member for restricting rotation of this turntable at an arbitrary angle.138And turn the turntable to turn the medium / small engineE2 / E3Since the attitude of the engine can be changed and assembled, the turntable can be turned to arbitrarily change the attitude of small and medium-sized engines. Therefore, the worker can freely change the posture of the medium / small engine according to the assembling work and proceed with the work. Since it is possible to work in an easy posture, it is possible to further reduce the burden on the operator and to assemble a small / medium-sized engine more efficiently.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of an outboard motor production facility according to the present invention.
FIG. 2 is a plan view of an outboard motor production facility according to the present invention.
FIG. 3 is a configuration diagram of an engine assembly line according to the present invention.
FIG. 4 is a side view of first and second assembly tables of an engine assembly line according to the present invention.
FIG. 5 is a plan view of first and second assembly tables of the engine assembly line according to the present invention.
6 is a cross-sectional view taken along line 6-6 of FIG.
FIG. 7 is a configuration diagram of a large assembly stand according to the present invention.
8 is a cross-sectional view taken along line 8-8 in FIG.
FIG. 9 is a side view of a drive chain mechanism according to the present invention.
10 is a sectional view taken along line 10-10 of FIG.
FIG. 11 is a diagram for explaining the operation of the first and second assembly tables according to the present invention (part 1);
FIG. 12 is a diagram for explaining the operation of the first and second assembly tables according to the present invention (part 2).
FIG. 13 is a diagram for explaining the operation of the first and second assembly tables according to the present invention (part 3).
FIG. 14 is a diagram for explaining the operation of the first and second assembly tables according to the present invention (part 4).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Outboard motor production equipment, 20 ... Engine assembly line, 110 ... 1st assembly stand, 115 ... Rotation mechanism, 117 ... Large assembly stand, 118 ... Swing mechanism, 130 ... 2nd assembly stand, 134, 135 ... Small Assembly stand (first and second small assembly stand),136, 137 ... Setting jig,138: Rotation restricting member, E1: Large engine, E2: Medium engine, E3: Small engine, Ha: Hand, Sp: Work space.

Claims (3)

In the engine assembly line (20) for assembling the engine in a flow operation,
The engine assembly line (20) includes a plurality of first assembly tables (110) for setting and assembling a large engine (E1) , and a plurality of second assemblies for setting and assembling a medium-sized engine (E2) and a small engine (E3) . Assembly tables (130) and alternately arranged along the engine assembly line (20) ,
The second assembly table (130) includes two set jigs (136) and (137) having the same detachable size or set jigs (136) and (137) having different sizes.・ Two small assembly bases (134) and (135) on which the small engines (E2) and (E3) can be set are provided.
Assembly isosamples set to one large engine (E3) in the first assembling table (110),
Alternatively, one of the medium-sized engine, small engine (E2), and (E3) is set on the two small assembly tables (134) and (135) of the second assembly table (130) , and one engine is installed. Assembling ,
Alternatively, one of the medium-sized engine, the small engine (E2), and (E3) is set on the two small assembly tables (134) and (135) , and two engines having the same size are assembled at the same time .
Or assembling two engines having different sizes of the medium engine (E2) and the small engine (E3) at the same time on the two small assembly tables (134), (135) ,
An engine assembly line characterized in that any one of the above engine assemblies can be selected . By providing a work space (Sp) on the back side when the large engine (E1) is set, the hand is extended from the back side of the large assembly base (117) to the large engine (E1) that has been set. A large assembling table (117) configured to be able to work, a swing mechanism (118) for swinging the large assembling table (117) from a horizontal position to a vertical position, and the large assembling table (117) are 360 The engine assembly line according to claim 1, further comprising a first assembly table (110) having a rotation mechanism (115) for rotating the rotation angle. The two small assembly tables (134) and (135) are turntables that can be rotated horizontally by setting the medium and small engines (E2) and (E3) on the upper surface. A rotation restricting member (138) for restricting the rotation of the engine is provided, and the turntable is turned to change the posture of the small and medium engines (E2) and (E3) so as to be assembled. The engine assembly line described.

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