JP4652363B2 - Metal mounting device - Google Patents

Description

  This application relates to a metal mounting device for automatically mounting a halved bearing metal on a connecting rod of an engine.

As this type of device, a device that is mounted by making the curvature of the half-bearing bearing metal smaller than the curvature of the mounted surface is known (Patent Document 1).
JP 7-68427 A

In this type of metal mounting device, the mounting surface of the connecting rod needs to be positioned at a predetermined position in advance when mounting the bearing metal.
However, since one end of the connecting rod is pivotally supported by the piston pin on the piston, the mounting surface is in a state of falling apart to either side of the piston pin in the axial direction. For example, the posture must be set upright. Moreover, it is necessary to maintain this posture until the bearing metal is completely attached.
For this reason, even if the mounting of the bearing metal itself can be automated, the posture control and posture maintenance in the previous process must be relied on manually, and it has been desired to automate this. The present application aims to realize such a request.

In order to solve the above-mentioned problems, the invention according to claim 1 relating to the metal mounting device is characterized in that the bearing metal is applied to the half-shaped bearing metal mounting surface provided at the large end portion forming one end of the connecting rod connecting the crankshaft and the piston. In the metal mounting device for mounting,
For a connecting rod that has a clamp arm that grips the large end and is tilted to the left or right when viewed from the axial direction of the crankshaft, hold the large end with the clamp arm and raise the connecting rod to Attitude control means for supporting in an upright state directly above ,
Metal mounting means for mounting the bearing metal on the bearing metal mounting surface;
While the connecting rod is supported in an upright state by the posture control means, the metal mounting means pushes the bearing metal into the bearing metal mounting surface from directly above, and the clamp arm receives the pushing load of the bearing metal. .

In the invention the above claim 1 of claim 2, characterized by comprising the main barrel mounting means integral with said attitude control means.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a posture sensor that detects which direction the connecting rod is tilted is provided .

A fourth aspect of the present invention and further comprising a metal pickup section that slides into the Oite to any one of claims 1 to 3, the side surface of the large end portion during pushing while holding the side end portion of the bearing metal To do.

According to a fifth aspect of the present invention, in the fourth aspect of the invention, the metal mounting means includes a pushing portion that pushes both open ends of the bearing metal from above.

Metal mounting apparatus according to the invention of claim 1 includes a metal mounting means for mounting push the bearing metal from immediately above the attitude control means and a bearing metal mounting surface for supporting cause connecting rod in an upright state. For this reason, the large end of the connecting rod is swingable with respect to the crankcase, and there is a mixture of parts that fall apart on both sides when viewed from the axial direction of the crankshaft in the initial state before mounting the bearing metal. Even if the initial position of the connecting rod is indefinite, the connecting rod can be raised to the upright posture by first locking and raising the large end with the clamp arm . For this reason, the direction in which the bearing metal is mounted thereafter is constant , and the posture control means supports the mounting surface in an upright state, so that the metal mounting means simply pushes the bearing metal into the mounting surface from directly above the mounting surface. Can be installed.
In addition, the clamp arm that holds the large end and supports the connecting rod in an upright state can receive the pushing load of the bearing metal.

  According to the second aspect of the present invention, since the metal mounting means is integrated, if the large end portion is held in a predetermined posture by the posture control means, the bearing metal can be immediately mounted, and the posture can be controlled by a single device. The bearing metal can be mounted continuously, and the mounting work of the bearing metal can be made more efficient.

According to the third aspect of the present invention, since the posture sensor is provided , even if the initial position of the connecting rod is indefinite, the posture sensor first detects the side where the large end is tilted, and the direction of the tilt is any It is possible to determine whether or not the connecting rod is upright by the attitude control means. For this reason, since the direction in which the bearing metal is subsequently mounted is fixed, it has become possible to achieve full automation, which was difficult in the past.

  According to the invention of claim 4, since the metal mounting means includes a metal catch portion that sandwiches the side end portion of the bearing metal, when the metal catch portion that sandwiches the center portion of the side end portion of the bearing metal is pushed into the mounting surface, The catch portion slides on the side surface of the large end portion with the bearing metal pushed into the mounting surface, so that the bearing metal can be mounted easily and reliably.

According to the invention of claim 5, since the push-in portion for pushing both open ends of the bearing metal from above is provided, it is only necessary to apply force to the open ends just before the push-in is completed by the push-in portion, thereby enabling smooth mounting. To do.

An embodiment will be described below with reference to the drawings. FIG. 13 is a view showing a connecting rod and a metal. In the drawing, A shows a connecting rod 1, which has an arm 2 and a large end 3 provided at one end thereof. The large end portion 3 is provided with a stud bolt 4. The bolt 4 is passed through a bearing cap 5 and fixed with a nut 6, so that the bearing cap 5 is integrated and a bearing hole 7 is provided inside. In order to form the bearing hole 7, the large end portion 3 and the bearing cap 5 are provided with metal mounting recesses 8 and 9 each having a semicircular concave curved surface, into which bearing metals 10 and 11 made of a semicircular plate material are fitted. They are installed together. The crankshaft 12 is supported by the bearing metals 10 and 11.
Reference numeral 13 denotes a split surface to be joined to the bearing cap 5. Reference numeral 14 denotes a small end portion provided at the other end of the arm 2, and is attached to the piston 15 by a piston pin 16 so as to be rotatable around the axis. For this reason, the arm 2 is swingable in the left-right direction in the figure with the piston pin 16 as the center on the large end 3 side.

FIG. 13B is a perspective view of the bearing metal 10 attached to the large end portion 3, which is a known member obtained by forming a strip material into a semicircular arc shape, and both ends in the direction along the arc form an open end 17. . L is the center axis of the crankshaft, and the dimension of the open end 17 in the direction parallel to the center axis L is a metal width W, and both ends in the center axis L direction are side end portions 18. Further, the surface of the bearing metal 10 that contacts the outer peripheral surface of the crankshaft 12 is defined as the inner peripheral surface, the surface that contacts the metal mounting recess 8 of the large end portion 3 is defined as the outer peripheral surface, and the distance between the inner peripheral surfaces of the two open ends 17 facing each other. Dimension D is the opening width. The opening width D before attachment is slightly wider than the diameter of the crankshaft.
Furthermore, in this application, let the direction along the circular arc of the side end part 18 be the circumferential direction of the bearing metal 10. The same applies to the bearing metal 11 on the bearing cap 5 side.
The surface of the mounting recess 8 as the mounting surface is also defined as a state where the direction of the arc along the outer peripheral surface of the bearing metal 10 is the circumferential direction, and the tangent T at both ends in the circumferential direction is the vertical direction. To do. The tangent line T in this state is also a line orthogonal to the split surface 13.

FIG. 1 shows the connecting rod 1 and the metal mounting device 20 incorporated in the crankcase 19 in a simplified manner.
In the present application, the front surface of the metal mounting device 20 is a surface viewed from the direction of the central axis L of the crankshaft 12, and the vertical direction is a direction in which the metal mounting device 20 contacts and separates from the crankcase 19 in the state shown in FIG. The direction toward the crankcase 19 is the lower side, and the opposite side is the upper side. In addition, the movement direction of the member when the distance is adjusted in the central axis L direction is referred to as the left-right direction or the width direction. Each direction in this embodiment is specifically indicated by arrows in the figure.

The connecting rod 1 shows a state in which a small end is attached in advance to a piston (FIG. 13A) inserted from a crankcase 19 into a cylinder (not shown). The crankcase 19 is the upper side of the upper and lower parts divided by the split surface 19a. In the illustrated state, the crankcase 19 is arranged upside down, and the split surface 19a is located on the upper side and is surrounded by the split surface 19a. The large end portion 3 protrudes upward in the inner space. Since the large end portion side of the connecting rod 1 is swingable around the crankshaft 12, it is tilted to either the front or rear side in the illustrated state, and this tilting direction is not uniform and is not constant.
For this reason, since the metal mounting recess 8 has different mounting surfaces in the front and rear directions, in order to automatically mount the bearing metal 10 to the large end portion 3, the attitude of the metal mounting recess 8 is first made constant. It needs to be corrected. In this embodiment, the posture is controlled to be all upright.

  In the metal mounting device 20 of the present application, the attitude control means 21 and the metal mounting means 22 of the connecting rod 1 are integrated into the frame body 23. When the metal mounting apparatus 20 moves above the crankcase 19, first, the attitude sensor 24 emits an ultrasonic wave to generate a large sound. Whether the end portion 3 is tilted to the left or right side is detected, the tilted state is detected by a suitable control device such as a computer (not shown), the direction and coordinates are calculated, and the posture control means 21 stands upright. The bearing metal is press-fitted into the metal mounting recess 8 by the metal mounting means 22 while maintaining this posture. The position of the metal mounting device 20 is controlled by a robot hand (not shown) and is freely moved to a predetermined position. However, moving means other than the robot hand can be freely adopted.

  FIG. 2 shows a posture control state of the connecting rod 1 by the metal mounting device 20. Based on the result of detecting the state in which the connecting rod 1 is tilted by the attitude sensor 24 (FIG. 1), the metal mounting device 20 moves to above the large end portion 3 and further moves downward to change the attitude control means 21. The large end 3 is sandwiched between the four clamp arms 25 that constitute the engaging portion, and then moved upward while moving upward, so that the posture of the large end 3 is corrected to the upright position. Details will be described later.

FIG. 3 is a front view of the metal mounting apparatus 20, and FIG. 4 is a side view (the rear view and the other side view appear symmetrically). In these drawings, the posture control means 21 is provided with a clamp cylinder 27 for moving a clamp arm 25 and a slide arm 26 to which the clamp arm 25 is attached in the front-rear direction. Provided. Although not shown, the posture sensor 24 is provided in a pair of front and rear at appropriate positions such as the lower left and right of the frame body 23.
The left and right clamp arms 25 and the slide arm 26 are provided as a pair of left and right when viewed from the side, and the clamp arm 25 and the slide arm 26 are composed of a total of four front, rear, left and right.
A lower end portion of each clamp arm 25 forms a gripping portion 25a bent rearward or forward in the front view, and a locking projection 25b protrudes toward the left and right gripping portions 25a opposed to each other in a side view at the tip of the gripping portion 25a. Is provided. The locking projection 25b can lock the vicinity of the connecting portion with the arm 2 at the large end 3.

  The metal mounting means 22 includes a pair of left and right metal catch portions 30, a metal catch cylinder 31 that adjusts the holding width by moving the metal catch portion 30 left and right, and a lower end portion of the metal catch cylinder 31. Are connected to the upper end of the cylinder connecting member 32, and the cylinder connecting member 32 and the metal catch cylinder 31 are moved up and down. Further, a metal push motor 34 (FIG. 3), a slide lever 36, a pusher 37 (respectively FIG. 2) and the like are provided as a mechanism for pushing the sandwiched metal to the large end side. Details will be described later.

  FIG. 5 is a sectional view taken along line 5-5 in FIG. Clamping cylinders 27 constituting the posture control means 21 are supported by the frame body 23 in a pair of front and rear with the lifting cylinder 33 interposed therebetween. The joint rod 27a of the clamping cylinder 27 connects the slide block 28 to its head and supports it by hanging. The slide block 28 is moved up and down as the slide portion 28a is guided by the vertical rail 29, and is connected to the slide arm 26 by a link described later. Reference numeral 26 a denotes an upper portion of the slide arm 26.

  The elevating cylinder 33, the cylinder connecting member 32, and the metal pushing motor 34 constituting the metal mounting means 22 are located on the center line C1 in the front-rear direction, and the metal pushing motor 34 is supported by the cylinder connecting member 32. The metal push motor 34 moves the slide lever 36 up and down via a bracket 35. A pair of slide levers 36 are provided on the front and rear of the bracket 35, extend downward and have a lower end integrated with the slide block 38. The front and rear slide blocks 38 are connected and integrated by connecting members 39 disposed horizontally in the front-rear direction, and pushers 37 are supported at both front and rear ends of the guide member 39. The front and rear pushers 37 are in a position to press both open ends of the metal supported by the metal catch portion 30, and when the slide lever 36 is pushed down via the bracket 35 by the metal push motor 34, it is bridged between the front and rear slide blocks 38. The left and right pushers 37 are simultaneously lowered by the connected member 39 to push the metal from the metal catch portion 30 to the large end side.

FIG. 6 is a view showing the inside by removing the frame body 23 from the side view of FIG. 4. The slide arm 26 is a separate member provided in front of and behind the center line C2 in the left-right direction, and a slide block 28 that moves up and down on the center line C2 is accommodated between the upper portions 26a of the left and right slide arms 26. Is done. The upper part 26 a and the lower part 26 b of each slide arm 26 are supported by the lateral rails 40 and 41 so as to be slidable in the left-right direction with respect to the frame body 23. The pair of left and right slide arms 26 are connected to the slide block 28 by links 42 and 43 that are spaced apart from each other. When the slide block 28 moves downward, the slide arms 26 are separated from each other and widened, and when moved upward, they are close to each other. Slide to narrow the interval.
A clamp arm 25 is attached to the inside of the lower portion 26b of each slide arm 26 with bolts. A locking projection 25b projects oppositely from the lower end of the clamp arm 25. For this reason, when the left and right slide arms 26 are separated or slid in the proximity direction, the distance between the pair of left and right opposing clamp arms 25 also changes, and the large end portion 3 can be gripped or released.

  FIG. 7 is a diagram for explaining the sliding operation of the slide arm 26, and shows a state in which the left and right slide arms 26 are approaching A and a state in which it is separated from B. The slide arms 26 arranged on the front and rear sides of the slide block 28 are connected by links 42 and 43 which are parallel links in the vertical direction. When the slide block 28 moves upward, as shown on the right side of the figure, the links 42 and 43 are inclined, the front and rear slide arms 26 are guided by the horizontal rails 40 and 41 and slide so as to approach the center line C2, and the clamping width which is the internal spacing of the pair of left and right clamp arms 25 is set to W1. The both side surfaces of the large end portion 3 are sandwiched between a pair of left and right grip portions 25a (FIG. 6) as the thickness between the left and right side surfaces 3c of the large end portion 3 is reduced. The thickness of the large end 3 is substantially equal to the width W of the receiving metal 10 (see B in FIG. 13).

Conversely, when the slide block 28 moves downward, the links 42 and 43 become substantially horizontal as shown in B, the front and rear slide arms 26 are separated from each other, and the clamping width W2 between the gripping portions 25a of the clamp arm 25 is The width becomes the largest, and the width is such that the grip portion 25a is separated from the side surface of the large end portion 3 and is not in contact.
Reference numeral 28b in the drawing denotes an oblique stopper step formed on the upper portion of the slide block 28, and restricts the tilting of the link 42 when the slide block 28 moves up. Similarly, 28c is a substantially horizontal stopper step, which restricts the tilting of the link 43 at the lower limit of the slide block 28. The ends of the links 42 and 43 are accommodated in the recesses formed in the corresponding part thicknesses of the slide arm 26 and the slide block 28 and are pivotally attached.

  FIG. 8 is a side view showing only the metal mounting means 22. The upper end portion of the slide lever 36 is bolted to the lower portion 35 a of the bracket 35. The slide lever 36 can move downward by a predetermined stroke through the outside of the bottom portion 32a of the cylinder connecting member 32. A slide block 38 is integrated with a lower portion of the slide lever 36 and is positioned between a pair of left and right metal catch portions 30 and can be moved up and down by a metal push motor 34. When the slide lever 36 is pushed down via the bracket 35, the front and rear pushers 37 are simultaneously lowered by the connecting member 39 spanned between the front and rear slide blocks 38, and the metal is pushed out from the metal catch portion 30 to the large end side. It is like that.

9 is a cross-sectional view taken along line 9-9 in FIG. The metal catch cylinder 31 is provided with a mounting bracket 46 that moves in the horizontal direction toward or away from the guide 45. The metal catch portion 30 is bolted to a protrusion 47 formed on the mounting bracket 46. Yes. The metal catch portion 30 is a substantially semicircular plate-like member (see FIG. 3), and grips the opposite side end portion 18 (B in FIG. 13) of the halved bearing metal 10 between the left and right metal catch portions 30. To do. The width between the opposing metal catch portions 30 and 30 is adjusted by, for example, the distance between the pair of left and right mounting brackets 46 in the metal catch cylinder 31 formed of an air cylinder. It becomes about W and is clamped between the metal catch portions 30. However, when the bearing metal 10 is pushed in, each metal catch portion 30 can slide downward on the side surface 3c (see FIG. 12) of the large end portion 3 while leaving the bearing metal 10 pushed into the mounting recess 8. Thereby, it can position reliably until the pushing-in of the bearing metal 10 is completed.
A pusher 37 is positioned above the open end 17 of the bearing metal 10 sandwiched between the metal catch portions 30.

  FIG. 10 shows a work process. The process will be described together with FIG. 11 which is a detailed explanatory view of posture control and FIG. 12 which is a detailed explanatory view of metal mounting. In the first process P1 and the second process P2 of FIG. 10, the state on the front surface of the metal attachment device 20 is shown, and after the third process P3, the states on the front surface and the side surface are shown together. The operation of the clamp arm on the non-display side also operates similarly or symmetrically.

In the first step P1, the metal attachment device 20 moves above the connecting rod 1. At this time, a bearing metal is sandwiched between the metal catch portions 30 facing each other in advance.
At this stage, the connecting rod 1 has the large end portion 3 tilted to either the right R or left L side. In this example, it falls to the R side. Since the metal mounting device 20 at this stage is not positioned above the large end portion 3 and is shifted to either side in the front-rear direction, ultrasonic waves are emitted by the left and right attitude sensors 24, and R, L due to the difference in reflection. Check where it is located.

In the second step P2, the metal attachment device 20 is moved to the detection side (in this example, the R side) of the large end 3.
In the third step P <b> 3, the metal attachment device 20 is lowered, and the clamp arm 25 is positioned slightly below the large end 3. Since the coordinates of the position of the large end portion 3 are previously known for each model, it is moved to a predetermined position according to the coordinates. Further, since the space between the clamp arms 25 is wider than the thickness of the large end portion 3, each slide arm 26 can move downward through the side of the large end portion 3.

  The upper part of FIG. 11 shows the relationship between the large end 3 and each clamp arm 25 in the third step P3, A1 shows the left-right direction, and B1 shows the front-rear direction. As shown in A1, the clamp arms 25 located on both sides in the left-right direction of the large end 3 are spaced apart from each other so as not to interfere with the large end 3, and as shown in B1, the clamp arm 25 falls over the large end 3 The rear side of the rear side overlaps the side surface of the large end 3, and the locking protrusion 25 b is the shoulder 3 b on the rear side or the vicinity thereof among the shoulders 3 a and 3 b formed before and after the lower end of the large end 3. Located in. The distance between the front and rear locking projections 25b is adjusted in advance to the distance between the front and rear shoulder portions 3a and 3b.

  In the fourth step P4, the space between the clamp arms 25 is narrowed and temporarily fixed with both sides of the large end 3 interposed therebetween. This state is a state indicated by an imaginary line in A1 of FIG. 10, and the locking projection 25b provided inside each of the gripping portions 25a and 25a and protruding toward the other side approaches to a position where it interferes with the arm 2. As shown in A2, the clamp arm 25 approaches the both side surfaces 3c of the large end 3 in the width direction and is clamped from the left and right. On the side where the large end 3 is tilted, the locking projection 25b of the gripping portion 25a abuts on the shoulder 3b, and the arm 2 is positioned between all four locking projections 25b.

In the fourth step P4, following the engagement of the large end 3 with the upper and rear gripping portions 25a, 25a, the metal attachment device 20 moves to the L side opposite to the side where the large end 3 is tilted. When it moves and moves directly above the piston 15, the large end 3 is brought upright.
This state is the state shown in A2 and B2 of FIG. 11. In A2, the gripping portions 25a of the left and right clamp arms 25 sandwich the both side surfaces 3c of the large end portion 3, and the arms 2 are sandwiched by the locking projections 25b. . In B <b> 2, the grip portion 25 a of the clamp arm 25 overlaps the side surface 3 c of the large end portion 3, and the locking protrusions 25 b are positioned on both the left and right sides of the arm 2. At this stage, each locking projection 25b maintains a locked state with the large end portion 3.

  In the fifth step P5, a small amount is temporarily widened between the clamp arms 25 in the width direction, the interval between the opposing locking projections 25b is increased, the side surface 3c of the large end 3 is movable, and the metal mounting device 20 is moved upward. Then, the locking protrusions 25b are securely brought into contact with the shoulders 3a and 3b of the large end portion 3, and the gap between the clamp arms 25 is narrowed again to securely hold the large end portion 3. As a result, both the side surfaces 3c are clamped by the left and right grips 25a, and the front and rear shoulders 3a and 3b are locked by the front and rear locking projections 25b, thereby accurately positioning the center position of the mounting recess 8 of the large end 3. Position to.

  In the sixth step P6, a bearing metal is mounted. First, the metal catch portion 30 holding the bearing metal 10 in advance is lowered, the bearing metal 10 is press-fitted into the metal mounting recess 8 and mounted, and then the width between the metal catch portions 30 is opened and the clamp arm 25 is opened. Is opened in the width direction to release the large end 3, and the metal attachment device 20 is returned to the initial position.

  FIG. 12 shows the metal mounting process in detail. A1 and B1 are the states before the bearing metal 10 is pushed in, and the bearing metal 10 is arranged directly above the mounting recess 8 with respect to the large end portion 3 positioned upright. To do. The width of the mounting recess 8 and the width W of the bearing metal 10 coincide with each other, and the interval between the metal catch portions 30 in the width direction also substantially coincides with W. For this reason, the metal catch portion 30 can slide on the side surface 3c of the large end portion 3 when the bearing metal 10 is pushed.

  A2 and B2 in FIG. 12 are in a pushed state, the metal catch portion 30 is on the side surface 3c of the large end portion 3, and the bearing metal 10 is fitted into the mounting recess 8. At this time, since the large end portion 3 stands upright and the mounting recess 8 is opened directly upward, the bearing metal 10 can be easily pushed in from directly above. In addition, since the shoulder portions 3a and 3b are supported by the locking projections 25b from below, the pushing load of the bearing metal 10 can be received while the large end portion 3 is supported upright by the grip portion 25a. it can. Therefore, as shown in B2, when both the open ends 17 are pushed by the catcher cylinder 31 with the integral pusher 37 and the bearing metal 10 is completely pushed in, both the open ends 17 are pushed in easily and the mounting is completed. At this time, the maximum load at the time of mounting is applied when the open end 17 is pushed in, but the contact between the open end 17 and both ends of the mounting recess 8 is almost tangential, so the vicinity of the open end 17 and the mounting recess 8 Generation | occurrence | production of the damage | wound by contact can be reduced as much as possible.

  Next, the operation of this embodiment will be described. First, since the metal mounting device includes the posture control means 21, the large end 3 side of the connecting rod 1 can swing with respect to the crankcase 19, so that the crankshaft 12 can be moved in the initial state before the bearing metal 10 is attached. Even if there is a mixture that falls apart on both sides, the posture sensor 24 detects the side on which the large end 3 is tilted, and the large arm 3 is engaged with the clamp arm 25 that is a locking part. Since the posture is corrected by raising it so that it is in an upright state, the subsequent mounting direction of the bearing metal 10 is fixed. For this reason, it has become possible to achieve full automation, which was difficult in the past.

Further, since the metal mounting means 22 is integrated with the posture control means 21, the metal mounting means 22 can immediately mount the bearing metal 10 when the large end portion 3 is held in a predetermined posture by the posture control means 21. Thus, the posture control and the mounting of the bearing metal 10 can be continuously performed with a single device, and the mounting work of the bearing metal 10 can be made efficient.
Moreover, since the mounting recess 8 is supported by the attitude control means 21 in an upright state, the metal mounting means 22 can be easily mounted simply by pushing the bearing metal 10 into the mounting surface from directly above the mounting recess 8.

  Further, since the metal mounting means 22 includes the metal catch portion 30 that sandwiches the side end portion 18 of the bearing metal 10, when the metal catch portion 30 sandwiches the center of the side end portion 18 of the bearing metal 10 and pushes the mounting recess 8. Since the metal catch portion 30 slides on the side surface 3c of the large end portion 3 while the bearing metal 10 is pushed into the mounting recess 8, the bearing metal 10 can be easily and reliably attached and does not require a complicated structure. .

  In addition, since the pusher 37 that pushes both open ends 17 of the bearing metal 10 from above is provided, the pusher 37 can be attached by applying force to the open ends 17 only immediately before the push-in is completed. It can be relatively small, and can be smoothly mounted from the tangential direction, is not easily damaged when pushed in, and a complicated structure having a drive mechanism such as a cam mechanism can be eliminated.

The present invention is not limited to the above-described embodiments, and various modifications and applications can be made within the principle of the invention. For example, if necessary for reasons such as the structure of the metal mounting means 22 side, the posture of the large end portion 3 can be tilted sideways or at an arbitrary angle rather than in an upright state. Even in this case, since the pushing direction of the bearing metal 10 is constant, automation is possible.

The perspective view which shows roughly the metal mounting | wearing by an Example apparatus. Above main part enlarged view Front view of metal mounting device Side view of metal mounting device Sectional view along line 5-5 in FIG. The figure which shows an inside except a frame from Drawing 4 Operation diagram of slide arm Side view of metal mounting means Sectional view along line 9-9 in FIG. Work process diagram Detailed explanatory diagram of attitude control process Detailed explanatory diagram of metal mounting process Diagram showing connecting rod and bearing metal

Explanation of symbols

1: connecting rod, 3: large end, 8: mounting surface, 10: bearing metal, 19: crankcase, 20: metal mounting device, 21: attitude control means, 22: metal mounting means, 25: clamp arm, 30: Metal catch part

Claims (5)

The bearing metal (10) is attached to the half-bearing bearing metal mounting surface (8 ) provided at the large end (3) which forms one end of the connecting rod (1) connecting the crankshaft (12) and the piston (15). In the metal mounting device (20) for mounting,
With the clamp arm (25) against the connecting rod (1) that has the clamp arm (25) that holds the large end (3) and is tilted to the left or right when viewed from the axial direction of the crankshaft (12) Attitude control means (21) for holding the large end (3) and raising the connecting rod (1) to support the bearing metal mounting surface (8) in an upright state ,
Metal mounting means (22) for mounting the bearing metal (10) to the bearing metal mounting surface (8) ,
While the connecting rod (1) is supported upright by the posture control means (21), the metal mounting means (22) pushes the bearing metal (10) into the bearing metal mounting surface (8) from directly above, and the clamp A metal mounting device, wherein the arm (25) receives a pushing load of the bearing metal (10) . The metal mounting apparatus according to claim 1, wherein the metal mounting means (22) is provided integrally with the attitude control means (21) . The metal mounting device according to claim 1 or 2, further comprising an attitude sensor (24) for detecting which direction the connecting rod (1) is tilted . The metal mounting means (22) includes a metal catch portion (30) that slides to the side surface of the large end portion (3) when pushed in a state where the side end portion of the bearing metal (10) is sandwiched. The metal attachment device according to any one of claims 1 to 3 . 5. The metal mounting device according to claim 4, wherein the metal mounting means (22) includes a pressing portion (37) for pressing both open ends of the bearing metal (10) from above.

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