JPH0741481B2 - Magazine indexing method for metal bearing mounting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a magazine indexing method in an apparatus for automatically mounting bearing metal on a connecting rod of an engine.

<Prior Art> The bearing at the large end of the connecting rod of the engine is composed of a pair of bearing metals that are halved. These bearing metals are attached to the main body side and the cap side of the connecting rod, and are butt-jointed to form a bolt. It is assembled together by tightening. Conventionally, in the assembly of the bearing portion of the connecting rod, the work of attaching the bearing metal to the connecting rod body and the connecting rod cap has been performed manually by a worker.

<Problems to be Solved by the Invention> There is a problem in that the work of manually mounting the bearing metal is inefficient, and the bearing metal is a high-precision component and is easily scratched, which requires skill.

The present invention has been made in view of such circumstances, and in an automatic connecting rod bearing metal mounting apparatus for automating the mounting of the bearing metal to the connecting rod,
An object of the present invention is to provide a bearing metal storage magazine indexing method for efficiently mounting bearing metal to a plurality of different types of connecting rods at the same time.

<Means for Solving the Problems> A magazine indexing method for a connecting rod bearing metal mounting device according to the present invention that achieves the above-mentioned object is a magazine that is indexed and driven by accommodating a plurality of bearing metals. The bearing metal is taken out from each of the plurality of magazines that are indexed so as to face a plurality of mounting positions provided on the connecting rod transport path, and the bearing metal is transferred to the connecting rod at the mounting position by a hand device. In the automatic installation device of connecting rod bearing metal to be installed at the same time, a plurality of types of bearing metal corresponding to a plurality of types of connecting rods are prepared, and the type of bearing metal stored in the plurality of magazines facing the mounting position is the same as the above type. In order to be able to adopt all combinations of the above, the bearing metals are sorted and stored in the magazine in advance for each type. According to the combination of the types of connecting rods carried into the mounting position, the magazine having the combination of the corresponding types of bearing metals is indexed.

<Operation> Regardless of the combination of the types of connecting rods carried into the predetermined mounting position, the magazine that stores the corresponding bearing metal is selected and indexed, and the mounting of multiple bearing metals at the same time is performed. Is done.

<Example> Hereinafter, one example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view of the entire connecting rod bearing metal mounting device according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.

In FIGS. 1 and 2, 1 is a magazine device, 3 is a hand device, and 5 is a take-out device. In this embodiment, two sets of the hand device 3 and the take-out device 5 are provided, and the bearing metal 13 can be attached to the two connecting rods 119 at the same time.

The magazine device 1 has a rotating main body 9 rotatably supported on a base 7 around a vertical axis, and a plurality of magazines 11 attached to the outer peripheral portion of the main body 9. This magazine
Reference numeral 11 denotes a vertically long box shape, and as shown in FIG. 9, a plurality of bearing metals 13 having a semicircular cross section are stacked and housed so as to be convex upward. On the other hand, the rotary body 9 has discs 15 on the upper and lower sides, and as shown in FIG. 3 which shows a plan view of the disc 15 parts, the magazines are arranged on the upper and lower discs 15 according to the number of magazines 11, respectively. The fixtures 17 are provided on the circumference at equal intervals. In the present embodiment, there are a total of 18 attachments 17 of, whereby 18 magazines 11 can be attached. As shown in FIG. 4 showing a plan view and FIG. 5 showing a vertical side view, each of these fixtures 17 is rotatably supported by a pivot 21 on a support base 19 fixed to a disk 15. It has a mounting piece 23,
A magazine 27 can be attached to the attachment piece 23 by fitting a bracket 27 protruding from the back surface of the magazine 11 from above into a groove 25 formed in the vertical direction of the magazine 23. Also,
A plunger 31 is slidably supported on the support base 19 in a direction toward and away from the mounting piece 23, and a mounting piece is supported by a spring 35 inserted by a spring receiver 33 screwed to the support base 19.
A roller 39 biased toward 23 and pivotally attached to the tip of the plunger 31 by a pin 37 is fitted in a V-shaped groove 41 formed on the back surface of the mounting piece 23. Therefore, as shown by the solid line in FIG. 4, the roller 35 is normally pressed against the groove 41 by the spring 35 so that the mounting piece 23 faces the front and the magazine 11 is directed in the radial direction of the disk 15. When an external force is applied by the pressing device 51, the attachment piece 23 is spring-loaded via the roller 39.
The magazine 11 can be swung while rotating while retracting the plunger 31 against the spring force of 35.

Further, the rotating body 9 has a drive motor 43 connected to the upper end thereof.
While the indexing cylinder 45 mounted on the base 7 is fitted into a plurality of positioning holes 47 provided on the lower surface of the lower disk 15 according to the number of magazines 11, the rotary body 9 is rotated. It is designed to be indexed in place. Incidentally, in FIG. 1 and FIG. 2, 49 is a cover,
The magazine device 1 is entirely covered and one end of the magazine device 1 is notched so that the bearing metal 13 can pass therethrough.

On the inner base 7 at the bottom of the magazine device 1, the first
As shown in the figure, an ejecting device 5 for extruding the bearing metal 13 in the magazine 11 and an extruding device 51 for defining the swinging angle of the magazine 11 are provided. FIGS. 6, 7, and 8 are a side view, a front view, and a plan view, respectively.

As shown in FIGS. 6 to 8, the takeout device 5 and the extrusion device.
Two sets of 51 are provided as described above. Each take-out device 5
Is a bracket 53 fixed to the base 7 and a spline shaft 55.
It has a take-out piece 57 which is supported in parallel with each other via a through hole so as to be movable in the horizontal direction, and a take-out cylinder 59 which is attached to the bracket 53 and reciprocally drives it. The take-out piece 57 is located at the same height as the lower end of the magazine 11 of the magazine device 1, and the shape of its tip is shown by an imaginary line in FIG. magazine
The bearing metal 13 stacked in 11 has a semi-cylindrical shape so that it can come into contact with only the lowest one. The distance between these pressing pieces 57 in the horizontal direction corresponds to two pitches between the magazines 11 of the magazine device 1 (see FIG. 8), and these two pitches are continuous in the transport line. Adjoining connecting rods
Corresponds to 119 intervals.

Each pressing device 51 is formed by fixing a pressing piece 63 to the rod tip of a pressing cylinder 61 attached to a bracket 53,
Each pressing piece 63 is located above the take-out piece 57.
The pressing cylinder 61 is parallel to the take-out cylinder 59, and the tip surface of the pressing piece 63 is a surface orthogonal to the driving direction of the cylinder 61.

Therefore, when the pressing cylinder 61 is operated and the pressing piece 63 is pushed forward, the pressing piece 63 hits the back of the magazine 11, whereby the magazine 11 makes a swinging motion about its pivot shaft 21 to move the cylinder 61. It is parallel to the stroke direction.
That is, although the stroke directions of the cylinders 59 and 61 are not coincident with the radial direction of the disc 15 as shown in FIG. 8, the magazine 11 can be directed in a desired direction by the operation of the pressing cylinder 61. Next, when the take-out cylinder 59 is operated, the take-out piece 57 pushes the one lowermost bearing metal 13 in the magazine 11 outward.

Further, two sets of hand devices 3 are arranged on the base 7 below the take-out device 5. 10 and 11 are a plan view and a side view of the tip portion, respectively, and FIGS. 12 and 13 are a plan view and a front view of the hand portion, respectively.

As shown in FIGS. 1, 10, and 11, the swivel base 65 on the side of the base 7 is rotatably supported around a horizontal axis by a pin 69 via a bracket 67, and A turning cylinder 71 is rotatably supported below by a pin 75 via a bracket 73, and a tip of a rod of the turning cylinder 71 is connected to a pin 69 via a link 77. Therefore,
By the operation of the swiveling cylinder 71, the swivel base 65 is rotationally driven between the horizontal position and the vertical position. A charging cylinder 79 is attached to the swivel base 65, and a hand 81 for handling the bearing metal 13 is fixed to the tip of the rod of the insertion cylinder 79.

A semicircular receiving piece 85 for receiving the bearing metal 13 is formed at the tip of the main body 83 of the hand 81, and the bearing metal 13 is provided at the base end thereof.
A step portion 87 for pressing is provided. As shown in FIG. 12 and FIG. 13, movable members 89 are attached to both sides of the hand main body 83 by a shaft 91 so that they can move toward and away from each other. An open / close cylinder 93 is attached to one movable member 89, and a rod of the open / close cylinder 93 is fixed to the other movable member 89.
Eighty-nine are moving away from each other. A guide groove 95 is formed at the tip of these movable members 89, and a pawl 97 is attached to the guide groove 95 so as to be slidable in the front-rear direction (vertical direction in FIG. 12). A groove 99 is formed in the claw 97, and the pin 101 screwed into the movable member 89 is provided in the groove 99.
While the claw 97 is inserted to prevent the claw 97 from falling off, the claw 97 is urged forward by the spring 103 interposed between the claw 97 and the movable member 89.

Further, a groove 105 having a semicircular cross section is formed at the tip of the claw 97 in order to avoid interference with the fastening bolt of the connecting rod, and a circular hole is formed on the side surface of the hand body 83 with the groove 105. While a protrusion 107 is provided, a recess 109 is formed on the upper and lower surfaces of the hand body 83 at the side edges so that the edges of the groove 105 do not interfere with each other when the claws 97 approach each other.

Further, a block 111 is fixed to the upper surface of the hand body 83, and positioning pins 113 and 115 are attached to the block 111. These positioning pins 113 and 115 are fitted in hand positioning holes 147 of a clamp 139, which will be described later. One of the positioning pins 113 has a circular cross section, while the other positioning pin 115 restricts the rotation around the positioning pin 113. The positioning holes 147 are contacted at two positions.

In such a hand device 3, the insertion cylinder 79
When the swivel cylinder 71 is moved to the vertical position with the swiveling cylinder 71 retracted, the hand is moved as shown by the imaginary line in FIG.
81 is close to magazine 11 in place and
It is in a state of sandwiching 11 and facing the ejection device 5. here,
When the movable member 89 is moved away from each other by the opening / closing cylinder 93 to open the pawl 97 and the bearing metal 13 is pushed out from the magazine 11 by the take-out cylinder 59 as described above, the pushed bearing metal 13 is transferred to the hand 81. To do. Next, the claw 97 is closed by the opening / closing cylinder 93 to hold the bearing metal 13, and then the swivel base 65 is horizontally tilted by the swiveling cylinder 71. Then, when the insertion cylinder 79 is extended, the hand 81 moves forward and the connecting rod 119 waiting in the forward direction holds the bearing metal 1
Wear 3. After mounting, the insertion cylinder 79 is retracted and the hand 81 is retracted.

The connecting rod 119 is conveyed to a predetermined mounting position while being placed on the pallet 117. 14 and 15 are a plan view and a vertical side view of the pallet, respectively. In this example, two connecting rods of different sizes can be placed on one pallet, and the pallet is shared to reduce the number of types of pallets by half.

As shown in FIG. 14 and FIG. 15, an abutment 121 for mounting the connecting rod 119 is fixed to the upper surface of the pallet 117,
On the abutment 121, the receiving part is located at the shoulder of the connecting rod 119.
123 is projected. Further, a connecting rod positioning hole 125 into which a positioning lever 141 of a clamp 139, which will be described later, is fitted is formed on the upper surface of the abutment 121 at a position where a large edge of the connecting rod 119 is located.
Is recessed.

A pallet positioning hole 127 is formed in the pallet 117 corresponding to each abutment 121, and a horizontal guide roller 129 and a vertical guide roller 131 are pivotally mounted on the lower surface of the rear portion of the pallet 117. On the other hand, a plate chain conveyor 133 and a guide rail 135 are laid in parallel with the connecting rod bearing metal mounting device described above, and the pallet 117 has its front part placed on the plate chain conveyor 133 and a rear guide roller. In a state where the guide rails 135 and 129 and 131 are engaged with each other, the plate chain conveyor 133 is driven to convey them. Two positioning rods 137 are arranged between the plate chain conveyor 133 and the guide rail 135 so as to face the hand device 3 at a predetermined mounting position.
The pallet 117 is positioned on the conveyance path by projecting 37 upward and fitting it into the pallet positioning hole 127 of the pallet 117.

Here, the pallet 117 is designed to be used with the connecting rod 119 placed on one of the two abutments 121 depending on the size of the connecting rod.
As described above, a plurality of pallets 117 are connected and conveyed, and the interval between the adjacent pallets 117 matches the interval between the two sets of hand devices 3 and the interval between the two positioning rods 137. Therefore, if the two positioning rods 137 are projected upward,
They are fitted into the pallet positioning holes 127 on the side where the connecting rods 119 of the two adjacent pallets 117 are placed, respectively, and the connecting rods 119 on which both the pallets 117 are placed are positioned at the mounting position facing the hand device 3. To do.

Further, a clamp device for the connecting rod 119 on the pallet 117 is arranged above the positioning rod 137. Figure 16,
FIG. 17 and FIG. 18 are a plan view, a side view, and a front view, respectively, in a state in which the connecting rod is held.

As shown in FIGS. 16, 17, and 18, the clamp 13
9 is located above the pallet 117 positioned at the mounting position by the positioning rod 137, and is vertically driven by a drive source (not shown). The clamp 139 has two positioning levers 141 that are fitted into the connecting rod positioning holes 125 of the pallet 117.
A pressing surface 143 that comes into contact with the upper surface of the receiving portion 123, two adjusting pins 145 that adjust the position of the connecting rod 119, and two hand positioning holes 147 into which the positioning pins 113 and 115 of the hand 81 are fitted. It has a protruding portion 149 that is bored. The distance between the two positioning levers 141 is slightly larger than the width of the connecting rod 119 (for example, about 0.1 mm). The two positioning levers 141 are fitted into the connecting rod positioning holes 125 so that the connecting rods 119 can be moved from both sides in the width direction. In the sandwiched state, the connecting rod 119 is allowed to move a little in its width direction so as to have a play. Also, the receiving unit 12
The height of 3 is also slightly higher than the thickness of the connecting rod 119, and the connecting rod 119 is positioned in the thickness direction with the pressing surface 143 of the clamp 139 abutting the receiving portion 123 and the clamp 139 being positioned above the connecting rod 119. You can move slightly to. That is, the connecting rod 119 has play in the width direction and the thickness direction while being pressed by the clamp 139, and the head of the bolt 151 of the connecting rod 119 is received in the left-right direction in FIG. 16, that is, the direction in which the bearing metal 13 is pushed. The movement of the portion 123 is restricted by hitting the side surface of the portion 123. On the other hand, the hand positioning hole 147 is provided to accurately position the hand 81 with respect to the connecting rod 119.

Therefore, when the two pallets 117 are positioned at the predetermined mounting positions, the clamp 139 descends and the connecting rod 119 is clamped, and then the insertion cylinder 79 of the hand device 3 is operated to grip the bearing metal 13. The hand 81 made moves forward toward the connecting rod 119. As the robot moves forward, first the positioning pins 113 and 115 are located in the hand positioning holes
The hand 81 and the connecting rod 119 are centered by being fitted into the inside of 147, and the two bearing metals 13 are simultaneously mounted in the two connecting rods 119 as the hand 81 moves forward. Here, since the connecting rod 119 can move slightly in the width direction and the thickness direction as described above,
Even if the positions of the hand 81 and the connecting rod 119 are slightly deviated from each other, the connecting rod 119 appropriately moves as the hand 81 advances, so that the bearing metal 13 can be accurately mounted.

By the way, connecting rods are being transported one after another on the transport path.
It is not enough to mount the same bearing metal 13 on all 119. That is, the bearing metal fitting portion of the connecting rod 119 has some unavoidable variation in dimensions within the allowable error range, and it is desirable to change the bearing metal 13 to be mounted according to the variation. In this embodiment, according to the dimensions of the bearing metal fitting portion, the connecting rod 119 has a regular size within, for example, ± 5 μm, B, a larger size within the allowable size, and a smaller size. C is divided into three groups of A, B and C, and a bearing metal 13 suitable for each type is mounted.

Therefore, three types of bearing metal 13 of A, B, and C corresponding to the three types of connecting rods 119 are prepared, and they are sorted and stored in the magazine 11 in advance for each type. 19th
The figure is an explanatory view of an example of distributing and storing the bearing metal 13 in the magazine device 1. In Fig. 19, ~ represent the address numbers of the magazine 11 shown in Fig. 3, and A, B, C represent the bearing metals housed in the magazine 11 of that address number.
Represents 13 types. Further, (I) and (II) are mounting positions, and the types of the bearing metal 13 housed in the magazine 11 facing the mounting positions (I) and (II) are A, B and C3.
Be able to take all combinations of types. That is,
Three types of connecting rods 119 for each mounting position (I) and (II)
Since there is a possibility that they will be carried in, there are nine kinds of combinations in total, and correspondingly, the bearing metal 13 is distributed to the magazine 11 having an odd address number so that these combinations are all achieved. Incidentally, for example, in the state shown in FIG.
When the magazine 11 is opposed to the bearing metal 13 for A and C, and the rotating body 9 of the magazine device 1 is rotated clockwise by 2 pitches from that, the mounting positions (I), (II)
Magazine number 11 of each address
The B and A bearing metals 13 will be supplied. On the other hand, in the magazine 11 with an even address number, the bearing metal of B is used so that the BB combination with the highest occurrence frequency can actually be obtained.
Store 13

Thus, the magazine 11 having the corresponding combination of the types of the bearing metal 13 corresponding to the combination of the types of the connecting rods 119 carried into the mounting positions (I) and (II) is indexed and used.

In this way, after the pallet 117 is positioned at the mounting position on the transfer line and the two magazines 11 are indexed, the take-out device 5 transfers the bearing metal 13 from each magazine 11 to the hand device 3. At the same time, the hand device 3 simultaneously mounts two of the bearing metals 13 on the connecting rod 119 on the pallet 117, whereby the bearing metals 13 are automatically attached.

In addition, in the above-mentioned embodiment, an example in which the bearing metal is attached to the body side of the connecting rod is described. However, it is needless to say that this mounting device can be used even when the bearing metal is attached to the cap side of the connecting rod. Can change the shape of the pallet and clamp accordingly.

<Effects of the Invention> As described above in detail with reference to the embodiment, according to the present invention, when the bearing metal is automatically attached to the connecting rod, the bearing metal is simultaneously attached to a plurality of connecting rods of different types. The work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view of the entire connecting rod bearing metal mounting device according to an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a plan view of a disc portion of a magazine device, FIGS. The figures are the plan view and vertical side view of the magazine attachment, respectively.
Figures 7, 7 and 8 are side, front and plan views of the take-out device and the pressing device respectively, Fig. 9 is a vertical cross-sectional view of the lower part of the magazine, and Figs. 10 and 11 are hand devices respectively. Plan and side views of the tip, FIGS. 12 and 13 are plan and front views of the hand part, respectively, and FIGS. 14 and 15 are plan and longitudinal side views of the pallet, respectively, and FIG. 16 and FIG. 17
18 and 19 are a plan view, a side view, and a front view of a pallet, a connecting rod, and a clamp, respectively, in which a connecting rod is held, and FIG. 19 is an explanatory view of an example of distributing and storing bearing metal in a magazine device. In the drawings, 1 is a magazine device, 3 is a hand device, 5 is an ejecting device, 11 is a magazine, 13 is a bearing metal, 45 is a positioning cylinder, 51 is a pressing device, 71 is a swiveling cylinder, 79 is an inserting cylinder, and 81. Is a hand, 117 is a pallet, 119 is a connecting rod, and 139 is a clamp.

Claims (1)

[Claims] 1. A plurality of magazines, each of which has a plurality of magazines which are arranged and each of which accommodates a bearing metal and is driven to be indexed, are indexed so as to face a plurality of mounting positions provided on a connecting rod transport path. In a connecting rod bearing metal automatic mounting device for taking out bearing metal from each of the magazines and simultaneously mounting the bearing metal to the connecting rod at the mounting position by a hand device, a plurality of types of bearing metals corresponding to a plurality of types of connecting rods are respectively attached. Prepare and store the bearing metal in advance in the magazine so that the types of bearing metal stored in the plurality of magazines facing the mounting position can be all combinations of the above types. The bearing metal corresponding to the combination of the types of connecting rods carried into the mounting position. Connecting rod bearing magazine indexing method for a metal mounting device characterized by indexing the gin.