JPH0314271Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a work tool storage device.

(Prior Art) A work tool storage device is known in which a stocker for holding a plurality of work tools is rotatably supported on a machine stand.

Conventionally, a Geneva cam or a motor has been used as a drive method for rotating and indexing the stocker.

(Problems that the invention aims to solve) However, the former had problems such as the space required to resist large loads was too large, and the latter had slow speed.

(Means for solving the problem) In order to solve the problem, the present invention provides a work tool stocking device 171 in which a stocker 175 for holding a plurality of work tools 31 is rotatably supported on a machine base 172. A stocker 175 capable of storing two stages of upper and lower work tools 165, 31 on one plate surface is fixed to a rotating shaft 174, and a base 176 at the bottom of the stocker 175 has locating holes 17 corresponding to the index number.
7..., and a swinging arm 181 having a retractable locating pin 182 that engages with the locating hole 177 is provided on the machine stand 172 side so as to be swingable coaxially with the rotating shaft 174, A cylinder unit 186, which can move forward and backward in the horizontal direction, is swingably installed on the machine base 172, and the tip of the cylinder unit 186 and the swing arm 181 are pivotally connected, and a locate pin of the swing arm 181 is connected. A retractable locate pin 192 that engages with the locate holes 177 of the base 176 other than the locate hole 177 of the base 176 that is engaged with the base 182 is installed on the machine stand 172.

(Function) When the locating pin 182 of the swing arm 181 is engaged with the locating hole 177 of the base 176 and the cylinder unit 186 is moved forward, the stocker 1
75 rotational indexing is performed, and the other locating hole 17
By engaging the locate pin 192 on the machine stand 172 with the stocker 175, the stocker 175 is locked on the machine stand 172 and the indexed position is reliably maintained.

Although the structure is simple in this way, since the cylinder unit 186 is used as the driving source, the speed is high, arbitrary rotation indexing can be performed, and moreover, it can handle large loads, reducing costs and improving productivity.

(Example) Examples will be described in detail below based on the accompanying drawings.

Fig. 1 is a schematic plan view of the entire apparatus for press-fitting a cam holder onto a cylinder head, and Figs. 2 and 3 are views in the direction of arrows A and B, where 1 is a conveyance path and 5 is a working position. , 17 is a parts stocker, 21 is a parts transfer device, 101 is a bolt feeder, 106
is an auxiliary hopper, 111 is a bolt transfer device, 161
171 is a tightening unit lifting device, and 171 is a tool storage device.

In this embodiment, a transport pallet 2 is used, on which a cylinder head W for a DOHC engine is mounted and fixed as shown in Fig. 4.
flows on the conveyance path 1, and above the working position 5, the left and right 1
It is positioned and fixed by a pair of arms 6, 6 and locating pins 7, 7, and guide rollers 8, 8 for transfer fibers are provided before and after the working position 5 (with respect to the conveyance direction). Furthermore, a press-fitting device 11 is installed in the working position 5, and the press-fitting device 11 consists of a pair of left and right press-fitting arms 12, 12 and a vertical cylinder unit 15. The cylinder unit 15 is provided with opposing pressing parts 13, 13 on the inside of the protruding upper end, and a cylinder unit 15 is installed between the continuous part 14 between the lower parts and the working position 5.

As shown in FIG. 25, a large number of cam holders P are placed on the tray 18 of the parts stocker 17 at high density in the longitudinal and width directions of the engine.
For DOHC engines, one set consists of a total of 12 cam holders P... arranged 6 adjacently in the left and right direction and forming a pair in the front and rear, and each cam holder P... has a dowel pin on the bottom surface as is known. The parts stocker 17 is disposed on the right side of the transport path 1 (along the transport direction) in front of the work position 5.

The parts transfer device 21 includes a first slider 23 that runs on a pair of left and right rails 22, 22 that are arranged above the parts stocker 17 and the tool stocker 171 and extend in the front-back direction. The second slider 2 runs on the first slider 23
4, a third slider 25 running vertically on this second slider 24, and this third slider 25.
It consists of an arm 26 fixedly attached to the lower part and projecting forward, and a component alignment device 31 is detachably attached to this arm 26.

The component alignment device 31 is as shown in FIGS. 6 to 12, and has a rectangular board 32 and an upper board 3 that are long in the left and right direction.
4 are connected with the left and right side plates 35, 37, etc., and the left and right 2
A pair of grooved locating pins 261, 261 provided on the arm 26 of the component transfer device 21 are fitted into the sleeves 38, 38 for removing and removing books, and are locked by lock balls 39. Further, on the left and right sides of the board 32, there are pressing parts 13 of the press-fit arms 12, 12,
13 is provided with seats 33, 33 that are in contact with each other. Here, the actuating arm 382 is engaged with the locking sleeve 381 of the detachable sleeve 38, and the locking sleeve 381 is pushed down via the actuating arm 382 by a clamp release device 195 provided in the tool stocking device 171, which will be described later. Perform attachment and detachment.

A board 32 is placed between the left and right side plates 35 and 37.
A pair of front and rear left and right slide bars 40, 40 are installed at the front and rear of the slide bar 4.
0, 40 are the first to sixth sliding plates 41 from the right side.
... 46 are supported, and the first sliding plate 41 is fixed below the substrate 32. Furthermore, first and second sliding plates 41, 4
A pair of front and rear stopper bolts 51, 51 are inserted between the two, and the expansion pitches of both the sliding plates 41, 42 are regulated by the stopper bolts 51, 51. Similarly, between the second and third sliding plates 42 and 43, between the third and fourth sliding plates 43 and 44, and between the fourth and fifth sliding plates 4
Pairs of stopper bolts 52, 53 are also provided between 4 and 45 and between the 5th and 6th sliding plates 45 and 46, respectively.
54, 55... are inserted.

Further, a rodless cylinder 56 is installed between the left and right side plates 35 and 37, and a locking claw 59 is provided at the lower part of a movable tube 58 that runs on the cylinder tube 57 in the left and right direction. is locked in a locking recess 49 on the sixth sliding plate 46. Further, a cylinder unit 61 in the front-rear direction is installed on the center portion of the base plate 32. Cylinder unit 61
A left-right joint bar 62 is fixed to the
The upper parts of left and right swing arms 63, 63 are engaged with both ends of the joint bar 62 via elongated holes 64, 64, respectively.

The left and right swing arms 63, 63 are both attached to the side plate 3.
5, 37, and is pivotally supported by pins 69, 69 at the intermediate portion with respect to brackets 66, 66 fixed on the base plate 32, and these swing arms 63,
A second camshaft 72 is installed between the lower portions of the camshafts 63 through elongated holes 65, 65, respectively. This second camshaft 7
An elongated hole 36 that allows the joint bar 62 to move back and forth is formed in the left side plate 35, and elongated holes 67, 67 that allow the joint bar 62 to move forward and backward are formed in both brackets 66, 66.
is formed. Further, a first camshaft 71 parallel to the second camshaft 72 is installed between the left and right side plates 35 and 37.

A pair of front and rear holders 81, 82 are provided below each sliding plate 41, and the first holder 81 on the front side is fixed to the sliding plate 41, and the first camshaft 71 is fixed to the sliding plate 41. It is inserted. A front-rear guide bar 83 is installed between the first holders 81 and the rear of each of the sliding plates 41 and 46, and this guide bar 83 supports second holders 82 on the rear side. The second camshaft 72 is inserted into the holders 82 . Furthermore, each holder 81, 82
... is equipped with a clamping device 84..., that is, the first
A guide pin 85, which is inserted into one bolt hole of the cam holder P, is vertically provided on the lower surface of the second holder 81, 82, and forms a front and rear pair with each guide pin 85, respectively. Clamp claws 86 are provided. Especially the sixth sliding plate 46
Both holders 81 and 82 are provided with two pairs of guide pins 85 and clamp claws 86, respectively.

Each clamp claw 86 has a bell crank shape,
The lever part 87... and the holder 81, 82 are pivoted to the holders 81, 82... side by pins 88... in the intermediate part, and are inserted into the other bolt hole of the cam holder P at the opposite end of the claw part. A tension coil spring 89 is tensioned between them. Also, each holder 8
Push rods 76 are fitted and held below both camshafts 71 and 72 of camshafts 71 and 72.
1, 72 and push rod 76... there is a steel ball 77 between them.
... are interposed, and these push rods 76 ... face the upper surface of the lever portion 87.

Furthermore, the protruding ends of both camshafts 71 and 72 from the right side plate 37 are formed into square parts 73 and 74, and each of the square parts 7
Link plates 91 and 92 are respectively fitted into the link plates 3 and 74, and engagement pins 93 and 94 are provided in a protruding manner at the front ends of both link plates 91 and 92, respectively. Further, a vertical cylinder unit 95 is installed at the right end of the base plate 32, and a front-back joint plate 96 is connected to the lower part of the cylinder unit 95. is the engagement pin 9
3 and 94 are engaged with each other, and 99 and 99 are guide rods.

On the other hand, the bolt feeder 101 is disposed on the right side in front of the working position 5, and in the embodiment has five supply paths 102, each of which is provided with a supply port 103 at its tip to allow the bolt to fall under its own weight. At least two types of bolts having different lengths are supplied from the bolt feeder 101.

The bolt transfer device 111 is then moved to the working position 5.
In front of the bolt feeder 101, left and right 1 extending in the front-rear direction are arranged opposite to the bolt feeder 101.
A first slider 113 running on a pair of rails 112, 112, a second slider 114 running on the first slider 113 extending in the left-right direction,
A third slider 115 that runs vertically on this second slider 114;
It consists of an arm 116 fixed to the lower part and protruding rearward, and a bolt set device 1 is attached to this arm 116.
21 is detachably attached.

The bolt setting device 121 is shown in FIGS. 13 to 18.
As shown in the figure, a rectangular base 12 that is long in the left and right direction.
2 and the upper stand 125 are connected by bolts 128 or the like, and a pair of grooved locate pins (not shown) provided on the arm 116 of the bolt transfer device 111 are inserted into the two left and right detachable sleeves 127, 127. , lock ball 129 . . . . In addition, the upper stand 125 has a total of 28 bolt head guide holes 12, 4 in the front-rear direction and 7 rows in the left-right direction.
6... are provided, and similar guide holes 123... are provided in the base 122 below them, respectively.

A pair of front and rear joint plates 131, 132 extending in the left-right direction are disposed within the base 122, and both joint plates 131, 132 have pins 134, 132 at both ends of the link 133, respectively.
5, and the link 133 is pivotally supported at the intermediate portion by a pin 136 which is provided on a substantially central portion of the bottom plate 124 of the base 122. This link 133 is provided with a lever 137 at right angles, and a link 139 is further pivotally connected to the lever 137 with a pin 138.
This link 139 is pivotally connected to the tip of a cylinder unit 141 in the front-rear direction installed on the bottom plate 124 of the base 122 with a pin 142.

Further, seven holder plates 143..., 145... extending in the front-rear direction are fixedly attached to both joint plates 131, 132, and each of the seven adjacent pairs is fixed to each of the joint plates 131, 132 by horizontal movement of the joint plates 131, 132. The holder plates 143, 145... have four semi-cylindrical parts 144 in the front and rear, respectively, at their joint parts.
..., 146... are vertically installed, and each semi-cylindrical portion 144, 1
46... is the bolt shaft guide hole 1 in the assembled state.
47. These guide holes 147 are bolt receiving parts.

Further, above the base 122, there are protrusions 152 that can freely appear and retract into the lower ends of the respective guide holes 126 of the upper base 125.
A lattice-shaped shielding member 151 is provided, and this shielding member 151 covers the bottom plate 12 of the base 122.
It is connected to a left-right cylinder unit 153 installed on the left side of the cylinder unit 141 of No. 4.

On the other hand, the tightening unit lifting device 161 is connected to a vertical rail 16 disposed above the working position 5.
2, a slider 163 that can be raised and lowered along this rail 162, and an arm 164 that projects rearward from this slider 163 and faces above the press-fit arms 12, 12, and a locate pin (not shown) provided on this arm 164. The tightening unit 165 is removably attached in the same manner as described above. This tightening unit 165 has 28 runners 166 hanging below the arm 164, and each runner 166 is movable via a rotating shaft 167 as shown in FIG. 19, and is positioned above the working position 5. They are arranged in a pattern corresponding to each bolt hole of the cylinder head W.

Next, the tool stocking device 171 is as shown in FIGS. 20 to 24, and a machine stand 172 is disposed on the left side of the conveyance path 1, facing the parts stocker 17.
A vertical rotating shaft 174 is rotatably supported in a bearing post 173 that is set up on a machine base 172, and a stocker 175 is fixedly attached to the rotating shaft 174. Base plate 1 at the bottom of this Stockka 175
76 is provided with four locate holes 177 whose phases differ by 90 degrees in the rotational direction. Further, a swing arm 181 is rotatably fitted and supported on the outer periphery of the bearing post 173, and a vertical locate pin 182 that engages with the locate holes 177 is provided at the tip of the swing arm 181. The cylinder unit 183 allows it to move in and out.

On the other hand, a vertical pivot pin 1 is placed on the machine base 172.
A post 184 with a horizontal cylinder unit 18 is installed on the pivot pin 185.
6 is swingably supported at the intermediate portion, and the tip of this cylinder unit 186 is connected to the intermediate portion of the swing arm 181 by a pivot pin 187. Furthermore, machine 1
A post 191 is erected on 72, and the post 19
A vertical locating pin 192 that engages with the locating holes 177 is provided on the cylinder 1, and this locating pin 192 can also be freely moved in and out by the cylinder unit 193.

Stocker 17 of such tool stocking device 171
On the four faces having a phase difference of 90 degrees in the rotational direction of the cylinder head W, there are four types of component aligning devices 31 and the tightening units 165 corresponding to the model of the cylinder head W.
are held in pairs, one above the other. That is, the component alignment device 31 uses the left and right locate pins 17 raised on the base plate 176 of the stocker 175.
8, 178 are fitted into the lower part of the detachable sleeves 38, 38, and are held by placing the side plates 35, 37 on the front, rear, left and right mounting pins 179, and the tightening unit 165 is held by the upper and lower locking claws. 168 and 169 are engaged with and held on hangers 188 and 189 on the upper part of the stocker 175.

On the other hand, above the arm 26 of the component transfer device 21, there is a tightening unit 165 above the stocker 175.
Upper and lower hangers 27 and 28 are provided to removably attach the .

The tool storage device 171 described above operates the cylinder unit 183 at the tip of the swing arm 181 to move the locate pin 182 to the base plate 176.
When the horizontal cylinder unit 186 is moved forward, the swing arm 1
The base plate 176 rotates together with the stocker 81, and the stocker 175 rotates 90 degrees to perform indexing.
Then, when the cylinder unit 193 on the machine base 172 is operated and the locating pin 192 is engaged with the other locating hole 177, the stocker 175 moves to the machine base 17.
2 to ensure that the indexed position is maintained.

Next, the arm 26 of the parts transfer device 21 and the hanger 2
7 and 28 to the tool storage device 171 side,
The component alignment device 31 is moved from the stocker 175 to the arm 2.
6 and remove the tightening unit 165.
is taken out using the hanger 27. Here, the machine base 172 of the tool storage device 171 includes an arm 196 projecting in one direction of the conveyance path, a cylinder unit 197 that swings the arm 196, and a cylinder unit 197 that swings the arm 196.
A push lever 198 pivotally supported above and a cylinder unit 1 that swings this push lever 198.
A clamp release device 195 consisting of 99 or the like is provided. Then, the push lever 198 operates the operating lever 382 to lock the lock sleeve 3.
81 allows the slotted locating pin 261 to be inserted into the detachable sleeve 38, and when the push lever 198 is raised, the lock sleeve 381 is raised by the bias of the spring 383, and the lock ball 39 locks it. Become.

After that, the arm 26 and hangers 27 and 28 are moved to the tightening unit lifting device 161 side, and the hanger 2
The tightening unit 165 held at 7 and 28 is delivered to the arm 164 of the tightening unit lifting device 161.

In the above, prior to the assembly work, the press-fit arms 12, 12 and the tightening unit lifting device 161
arm 164 is held in the raised position.

Further, the arm 26 of the component transfer device 21 is located above the component stocker 17, and the first to sixth sliding plates 41 of the component alignment device 31 held by the arm 26
...46 are overlapped and closed, and the first
and the second holders 81, 82... are also in a close state.
And the clamp device 8 of each holder 81, 82...
As shown in FIGS. 7 and 9, 4, 84, . . . have a set of cam holders P, P held in left and right bolt holes, respectively.

Furthermore, the arm 116 of the bolt transfer device 111 is located on the bolt feeder 101 side, and the arm 116 of the bolt transfer device 111 is
The bolt set device 121 held at 6 is located below the supply port 103..., and the seven pairs of holder plates 143, 145... are in a combined state,
Further, each protrusion 152 of the shielding member 151 is in a retreated state from the guide hole 126. and each supply port 1
03... By moving the arm 116 downward, different types of bolts Q..., Q... with different lengths are inserted into each guide hole 126... of the base 125, as shown in Figs. 14 and 15. has been done.

The operating procedure of the above-mentioned overall device will be explained below. First, the conveying pallet 2 on which the cylinder head W is placed is conveyed on the conveying path 1, and is positioned and fixed on the working position 5 by arms 6, 6 and locate pins 7, 7. be done.

Next, the arm 26 of the parts transfer device 21 moves above the working position 5, and is sequentially separated from the sixth sliding plate 46 by the operation of the rodless cylinder 56 on the parts aligning device 31, and each sliding plate 41... The stopper bolts 51...55 are used to expand in the left-right direction at a predetermined pitch. In addition, the joint bar 62 moves forward due to the operation of the cylinder unit 61 in the front and rear direction, which causes the left and right swing arms 63, 63 to move to the pin 69,
69 as a fulcrum, and the second camshaft 72 between the arms 63 and the lower part of 63 moves parallel to the first camshaft 71 rearward. Then, the second holders 82 are expanded in the front-rear direction with a predetermined pitch behind the first holders 81.

As a result of the above, the cam holders P, which are being held by the clamping devices 84, 84, of the holders 81, 82, respectively, are automatically unfolded and arranged at predetermined positions on the cylinder head W, and face them.

Thereafter, the arm 26 is lowered, and each cam holder P is placed and set at a predetermined position on the cylinder head W via a knock pin.

Then, the press-fitting arms 12, 12 are lowered by the operation of the vertical cylinder unit 15 inside the working position 5, and the pressing parts 13, 13 at the upper ends thereof come into contact with the seats 33, 33 on the left and right sides of the board 32 of the component alignment device 31. ,
As the press-fit arms 12, 12 further descend, the substrate 32 also descends, and the sliding plates 41... and the holders 81, 8
2. Press each cam holder P downward through the
Press the dowel pins of each cam holder P onto the cylinder head W.

Thereafter, the vertical cylinder unit 95 on the component alignment device 31 is operated to align the joint plate 9.
6 is lowered, and each link plate 91, 92, whose engagement pins 93, 94 engage with each long groove 97, 98 of this joint plate 96,
1,72 as a fulcrum. Since the camshafts 71 and 72 are both fitted to the link plates 91 and 92 at the square parts 73 and 74, as the link plates 91 and 92 swing, both the camshafts 71 and 72
72 rotates, and each push rod 76... is pushed down. As a result, each clamp claw 86 resists the spring 89 and separates from each guide pin 85, and the clamping of each cam holder P is released all at once. From then on, the arm 26 rises and the parts stocker 1
7 Return to the top. In addition, when clamping, perform the operation opposite to the above.

Next, the arm 116 of the bolt transfer device 111 moves above the working position 5 and lowers, and each holder plate of the bolt set device 121 is placed over the bolt hole of each cam holder P press-fitted onto the cylinder head W. The lower ends of the bolts Q, Q, which are in a gripping state, are abutted between the bolts 143, 145, and so on.

Then, the left and right cylinder units 153 on the bolt setting device 121 are operated to remove the shielding member 1.
51 are simultaneously advanced into the bolt head guide holes 126. Here, if even one bolt is set incorrectly in the bolt hole of the fastening part, or if a bolt longer than specified is set, the protrusion 152 will hit the bolt head etc. and prevent further advancement. Therefore, a defective bolt setting is detected and the bolt is set again.

When the bolt is set accurately in this way, the link 139 and the lever 137 are activated by the operation of the longitudinal cylinder unit 141 on the bolt setting device 121.
Both joint plates 131 and 132 move synchronously in different directions of the left and right sides via the link 133, and each of the seven pairs of holder plates 143, 145...
are separated at the same time. As a result, each bolt shaft guide hole 147... is opened, the grip on each bolt Q, Q... is released all at once, and from then on, the arm 116 rises.
Return to the bolt feeder 101 side.

Thereafter, the arm 164 of the tightening unit elevating device 161 is lowered, and the bolts Q, Q... are tightened by the runners 166 of the tightening unit 165, thereby completing the assembly work.

After completion, the conveying pallet 2 is sent to a processing machine for the next process, and the camshaft hole is processed.

By the way, the above-mentioned device can also be applied to assembling a bearing cap to a cylinder block and other fastening parts.

(Effects of the invention) As described above, according to the invention, since the cylinder unit is used as the drive source, the structure is simple, and arbitrary rotational indexing can be performed at high speed, and it can withstand heavy loads. It is also possible to reduce costs and improve productivity.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view of the entire device, Figures 2 and 3
The figures are views in the direction of arrows A and B in Figure 1, Figure 4 is a front view of the working position, and Figure 5 is from Figure 4 C-C.
A line sectional view, FIG. 6 is a schematic plan view of the parts alignment device,
Fig. 7 is a front view showing the main part longitudinally, Fig. 8 is a cutaway plan view of the sliding plate portion, and Figs. The views in the F direction and the X direction, FIG. 13 is a schematic plan view of the bolt setting device, and FIGS. 14 to 18 are FIG. 13 G.
-G line, H-H line, I-I line, J-J line and K-
19 is a side view of the inside of the tightening unit, FIGS. 20 and 21 are a side view and a plan view of the tool storage device, FIG. 22 is a view taken along line LL in FIG. 20, 23 is a view taken along the line NN in FIG. 22, FIG. 24 is a view taken along the line MM in FIG. 21, and FIG. 25 is a schematic plan view of the parts on the stocker. In addition, in the drawing, 1 is a conveyance path, 5 is a working position, 11
1 is a press-fitting device, 12 is a press-fitting arm, 13 is a pressing part,
17 is a parts stocker, 21 is a parts transfer device, 2
7, 28 are attachment/detachment devices, 31 is a parts alignment device, 32
is a board, 33 is a catch, 41...46 is a sliding plate, 51
...55 is a stopper bolt, 56 is a rodless cylinder, 63 is a swing arm, 71 and 72 are cam shafts,
81 and 82 are holders, 84 is a clamp device, 9
1 and 92 are link plates, 101 is a bolt feeder, 103 is a supply port, 111 is a bolt transfer device, 121 is a bolt set device, 126 is a bolt head guide hole, 131 and 132 are joint plates, 141 is a cylinder unit, 143, 14
5 is a holder plate, 147 is a bolt receiving part, 1
51 is a shielding member, 152 is a projection, 161 is a tightening unit lifting device, 165 is a tightening unit, 171
172 is a tool stocking device, 172 is a machine base, 174 is a rotating shaft, 175 is a stocker, 176 is a base, 17
7 is a locate hole, 181 is a swing arm, 182 is a locate pin, 185 is a pivot pin, 186 is a cylinder unit, 187 is a pivot pin, 192 is a locate pin, 195 is a clamp release device, W is a cylinder head, and P is a cam holder. , Q is volts.

Claims (1)

[Scope of Claim for Utility Model Registration] A work tool storage device in which a stocker for holding a plurality of work tools is rotatably supported on a machine base, in which the stocker is capable of storing two upper and lower stages of work tools on one plate surface. A swing arm is fixed to the shaft, and a locating hole corresponding to the number of indexes is provided in the base at the bottom of the stocker, and a swinging arm is provided with a locating pin that engages with the locating hole and is retractable and is concentric with the rotating shaft. A cylinder unit is swingably provided on the machine base, and a cylinder unit that can move forward and backward in the horizontal direction is swingably installed on the machine base, and the tip of the cylinder unit and the swing arm are pivotally connected; The power tool storage device further comprises a retractable locating pin installed on the machine base that engages with a locating hole other than the locating hole of the base that is engaged with the locating pin of the swing arm.