JPH09174298A - Press die positioning structure of press volume reduction press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize the press vol. reduction press. SOLUTION: In this press volume reduction press, a press die 20 is reciprocated between a scrap feeding place and pressing place, scraps are pressed and reduced in vol., the press die 20 is brought up with a slider 70, and vol. reduced scraps which are put out are taken out of a carriage. The slider fork 70b is provided with a hook 72 locked at the forward side surface than the center line of a flange 21 of the press die 20. The hook 72 is freely locked with and unlocked from the flange 21 by descending of the press die 20. The lower part of the press die 20 is supported by fitting it into the upper surface recessed part 31 of the carriage 30, while the upper part is supported over whole orientations by fitting it into the slider recessed part 70a and locking between the hook 72 and the flange 21. As stable supporting force is obtained on the upper and lower supporting, the press die 20 is firmly supported even against deviating force at the time of pressing without any problems. By this way, the die guide, etc., are not reqered regress on the carriage, thereby miniaturizing the carriage. When the carriage is miniaturized, its driving mechanism and machine frame, etc., are also miniaturized, thereby miniaturizing the whole structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press die positioning structure of a press machine for compressing and reducing various kinds of waste such as metal scrap.

[0002]

2. Description of the Related Art Various kinds of wastes (scraps) are subjected to so-called volume reduction treatment to reduce the bulk in terms of transportability and handling. A compression (pressing) means is often used for the volume reduction. For example, conventional compression volume reduction presses for metal scrap include those shown in FIGS. 12 to 15. The press machine is provided on the upper surface of the bed 1 so as to be able to move a carriage 3 on which a cylindrical press die 2 is mounted. The carriage 3 has a press position A in which a pusher 4 moves up and down above the bed 1 and a metal. The scrap (object a) is reciprocally moved between the scrap and the supply position B where the scrap is put into the press die 2 (see FIG. 14).

The carriage 3 is moved by a hydraulic cylinder 8. When the hydraulic cylinder 8 is driven, the carriage 3 is guided and moved by a guide 8a and hits a stopper 8b, so that the press die 2 pushes the pusher 4. Is located at the center position (press position A) of the.

A frame F rising above the bed 1 is provided with a hydraulic cylinder 6 for driving the presser 4 and a slider 7 which moves up and down toward the bed 1. The slider 7 has a two-pronged hawk shape in plan view having a concave portion 7a into which the press die 2 is fitted from the supply position B side (see FIG. 14), and the hawk portion 7b is formed in the press die 2.
Then, the press die 2 is lifted as the slider 7 rises (see the embodiment for details).

Now, as shown by the chain line in FIG. 13, after the scrap a is put into the press die 2 at the supply position B,
As shown by the solid line, the hydraulic cylinder 8 moves the press die 2 to the press position A and lowers the pusher 4 to compress and reduce the volume of scrap. Next, after the pusher 4 is lifted and retracted, the press die 2 is moved to the supply position B, and the scrap a is charged again, and thereafter, the same operation is repeated.

When the compression volume reduction scrap (pellet) a'in the press die 2 reaches the required amount (size), the presser 4
13 is applied to the upper surface of the scrap a ′ without applying a pressing force, the hydraulic cylinder 5 is operated to lift the press die 2 by the slider 7 as shown by the chain line in FIG. The object to be processed a ′ that has come out is lifted from the pusher 4 and then discharged from the top of the carriage 3 by the hydraulic cylinder 9 and transferred to an appropriate position (see FIGS. 12 and 14).

[0007]

In the pressing machine of this type, a large force is applied to the press die 2 during compression by the presser 4, and a biased force in the lateral direction or the like is generated due to the input mode of the scrap a. To work. Therefore, the trolley 3
It is necessary to firmly support the press mold 2, and conventionally, as shown in FIG. 15, a cylindrical mold guide 10 is mounted on the carriage 3. The mold guide 10 must resist the pressing force and the deflection force in the state where the press mold 2 is fitted, and as shown in the figure, it becomes large and requires the reinforcing rib 10a and the like. .

Further, the die guide 10 is formed with an opening 10b for paying out the volume-reduced scrap a '. The opening 10b is determined in consideration of the strength of the guide 10 and the like, and cannot be made larger than necessary. Therefore, the height of the volume-reduced scrap a'is limited to the height L of the opening 10b (see FIG. 15). Since the volume reduction height is limited, the input amount of scrap a must be strictly controlled. This is because if the input amount is large and the height of the volume-reduced scrap a ′ is higher than L, the payout is not made and the work is stopped. On the other hand, in order to surely eliminate the work stoppage, the input amount is suppressed within a safe range that can be paid out, and the size of the volume-reduced scrap a'becomes small, and the operation rate is reduced.

Further, providing the mold guide 10 on the trolley 3 requires an installation area, and inevitably the trolley 3
Becomes larger. The increase in the size of the trolley 3 causes the size of the bed 1 and the frame F to increase, and a large driving force is required. Therefore, the hydraulic cylinder 8 has been conventionally used. According to the hydraulic cylinder 8, the guide 8a, the stopper 8b, etc. of the carriage 3 must be provided on the bed 1 (see FIGS. 12 and 14), and the size of the bed 1 is increased to secure the installation space. Such an increase in the size of the trolley 3, the bed 1, and the frame F invites an increase in the size of the entire press machine, and a reduction in size is desired in view of the installation space.

Under the above circumstances, it is an object of the present invention to reduce the size of the compression volume reduction press and to increase the volume reduction scrap a'to increase the operating rate.

[0011]

In order to solve the above-mentioned problems, the invention according to claim 1 presses the above-mentioned press die by reciprocating between a workpiece supply position B and a press position A. In the compression volume reduction press machine, in which the workpiece is compressed and reduced by a child, the press die is lifted, and the reduced volume of the treated workpiece is discharged from the top of the truck, the lower portion of the press die is fitted on the top surface of the truck. A hook is formed on the front side of the center of the flange of the press die on the hawk part of the slider, and the hook is provided on the slider and the press die relative to each other. It is configured such that it can be disengaged from the flange by movement.

According to this structure, the lower part of the press die is supported by fitting it to the upper surface of the carriage, while the upper part is fitted to the slider recess and the hook and flange are engaged together. Supported by azimuth. That is, the press die is supported in all directions above and below. Since the upper and lower supports obtain a stable supporting force, the press die can be firmly supported against the deflection force at the time of compression, and there is no problem. Therefore, the conventional mold guide 10 is not necessary, and the size guide of the volume reduction scrap a ′ by the mold guide 10 is also eliminated.

After the volume has been reduced to the required height, the press die is lifted up as in the conventional case, and the workpiece to be removed is discharged from the trolley.

According to a second aspect of the present invention, in the press die positioning structure of the compression volume reduction press having the above structure, the carriage is self-propelled, and the lower surface of the carriage and the upper surface of the bed at the press position are fitted to each other. A matching key or key groove is provided, respectively, and the dolly is lowered at the press position, the lower surface of the dolly comes into contact with the upper surface of the bed, the key is fitted in the key groove, and the dolly lowers the press die. By the downward movement, the flange of the press die is locked to the hook portion.

According to this structure, since the trolley is self-propelled, the trolley can be downsized. In this self-propelled trolley, during compression and volume reduction, the trolley is lowered and its lower surface abuts against the bed upper surface, so that the wheels of the trolley do not resist the pressing force of the pusher and directly from the trolley to the bed. There is no fear that the wheel shaft will be damaged due to the pressing force. At this time, the dolly is positioned by the fitting of the key and the key groove, so that the dolly does not move unintentionally. Also,
Simultaneously with the contact and fitting, the hook and the press die flange are also locked.

According to a third aspect of the present invention, in the press die positioning structure of the compression volume reducing press machine for the self-propelled carriage, the wheels of the carriage can be moved to the rails on the bed, and the wheels and the rails. The rails on which the wheels rest when the truck is in the press position are divided, and the divided rail pieces can be moved up and down by the cylinder, The lower surface of the dolly is brought into contact with the upper surface of the bed by the movement of.

According to this structure, the wheels travel along the rails and the movement of the carriage is stable. Further, during compression and volume reduction, the wheels descend and the lower surface of the carriage contacts the upper surface of the bed, so there is no risk of damage to the wheel shafts, as described above.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is shown in FIGS. 1 to 11, and the same reference numerals as those used above denote the same items, and therefore their explanations are omitted. That is, this embodiment is an improvement of the carriage 30 and its moving mechanism, the press die 20, and the lifting slider 70 in the above-mentioned compression volume reduction press machine.

As shown in FIG. 10, the trolley 30 has a recess 31 formed in the center of the upper surface, into which the lower part of the press die 20 is fitted, and on both sides of this recess 31, the scrap a'after compression and volume reduction is dispensed. An opening 31a for use is formed. A plate (sleeve) made of, for example, SKD61 or the like that can withstand compression may be stretched on the inner surface of the recess 31.

Before and after the bogie 30, as shown in FIG. 8, wheels 32a, 3 are provided via a support frame 35 and a bearing bearing 37.
2b is attached, and the wheels 32a and 32b travel on rails 11a and 11b on the bed 1. One of the wheels 32a has a ridge 32a 'on its entire circumference as shown in FIG.
And the protrusion 32a 'is formed on the rail 11
As the wheel 32a travels by fitting into the groove 11a "of a, the carriage 30 moves stably without derailing. For this reason, the conventional large guide 8a is provided or its guide is provided. It is not necessary to form the slide groove of 8a on the side surface of the bogie, and the other wheel 32b and the rail 11b may have the same fitting structure.

A motor 33 for moving the carriage 30 is provided at the front of the carriage 30.
The wheels 32a and 32b are rotated by the motor 33 via the reduction gear 34, and the carriage 30 travels (moves). The motor 33 is driven from a controller (not shown) via a cable bear, and the controller 30 moves the carriage 30 not only to the press position A and the supply position B but also to the carriage 3
It is appropriately moved to a maintenance position of 0 (position apart from the supply position B) or the like. Further, the traveling speed of the trolley 30 is appropriately selected so that the optimum operating cycle of the press machine is based on changes in the input amount of the scrap a and the weight of the volume-reduced scrap a ′.

A key groove 36 is formed on the lower surface of the carriage 30 as shown in FIGS. 7 and 10, and when the carriage 30 is at the press position A and lowered as shown in FIG.
The upper key 12 is fitted into the key groove 36, and the eccentric movement of the carriage 30 is restricted. It is also possible to provide the key 12 on the dolly 30 side and the key groove 36 on the bed 1 side.

Each wheel 3 of the truck 30 at the press position A
Rails 11a and 11b corresponding to 2a and 32b are divided as shown in FIG. This split rail piece 11
A'and 11b 'can be moved up and down by a hydraulic cylinder 13 that absorbs and drains oil as indicated by arrows, and is normally shown in FIG.
As shown in FIG. 7A, the wheels 32 rise when they are at the same level as the rails 11a and 11b, and when they descend as shown in FIG.
a and 32b fall into the space, and the lower surface of the truck 30 contacts the upper surfaces of the rails 11a and 11b (bed 1). For this reason, at the time of compressing and reducing the volume, which will be described later, even if a pressing force acts on the carriage 30, the force does not act on the axles 32a and 32b. When the carriage 30 is moving (running), the split rail pieces 11a 'and 11b' return as shown in FIG. The lowering amount of the trolley 30 may be set appropriately, for example, 15 mm, and at this time, the protrusion amount of the key 12 from the upper surface of the bed 1 is 12 mm.
Eliminate the bottom surface contact.

A slider 70 for lifting the press die 20.
As shown in FIG. 10, the recess 70a is
Has two-forked fork-shaped portions 70b, 70b formed therein, and a protrusion 71 that fits into the groove 22 of the press die 20 is provided on the inner surface thereof. The ridge 71 extends from the center line of the recess 70 in the front-rear direction (moving direction of the press die 20) to the front side 7.
1a (supply position B side) extends linearly in that direction. In addition, the opening width at both ends of the protrusion 71 is equal to that of the press die 2
The inner diameter of the groove 22 of 0 is slightly larger than the inner diameter of the groove 22. Therefore, the press die 20 mounted on the carriage 30 fits smoothly into the protrusion 71.

On the other hand, the upper fork-shaped portion 7 on the front side of the ridge
The tip of 0b is not a straight line but a hook 72 extending inward with the curvature of the outer diameter of the flange 21 of the press die 20 (see FIGS. 6 and 10). Therefore, as shown in FIG. 11A, the press die 20 mounted on the carriage 30 fits into the recess 70 a of the slider 70 with the ridge 71 positioned below the groove 22 of the carriage 30. Is moved to the press position A and descends, the protrusion 71 is positioned above the groove 22 as shown in FIG. 6B, and the press die 2 is pressed as shown in FIG.
The zero flange 21 fits within the arc formed by the inner surface of the hook 72. In this state, as can be understood from the figure, the center side of the flange 21 on the front side of the flange 21 is supported by the hook portion 72, and the press die 20 to the front side (the supply position B side) is supported.
Will be blocked from moving. That is, the press die 20 in this state is positioned at the press position A with its upper and lower portions being movably supported in all directions by the recess 31 of the carriage 30 and the slider 70. When the dolly 30 moves, the dolly 30 is lifted by the hydraulic cylinders 13 and enters the state of FIG. 11A, which allows the dolly to move.

As shown in FIGS. 1, 2, 4, and 6, the slider 70 includes a guide 74 and a guide give 7 which are provided on the frame F so as to project therefrom.
Go up and down along 5. The guide give 75 is a guide 74
It is attached to the guide 74 by a pressing bolt 76a screwed in and a tension bolt 76b penetrating the guide 74 and screwed into the give 75.
The vertical tilt is adjusted by adjusting the screwing amount of b.

This embodiment has the above-described structure, and as in the conventional case, the supply position B is indicated by the chain line shown in FIGS.
After the scrap a is put into the press die 20, the carriage 30 is moved to the press position A as shown by the solid line, the carriage 30 is lowered, and the lower surface of the carriage A is brought into contact with the bed 1. , The flange 21 of the press die 20
Is fitted inside the hook portion 72 of the slider 70.

In this state, the pusher 4 is lowered by the hydraulic cylinder 6 to compress and reduce the scrap a. Next, after the pusher 4 is raised to be withdrawn, the press die 20 is moved to the supply position B, and the scrap a is charged again, and thereafter, the same operation is repeated.

When the compression volume reduction scrap a'in the press die 20 reaches the required size, the slider 70 is lifted by the hydraulic cylinder 5 with the pressing element 4 being in contact with the upper surface of the scrap a '. Lift the press die 20.
By this lifting, the compression volume-reduced scrap a ′ that has come out of the press die 20 is lifted up by the presser 4,
It is delivered from the top of the carriage 30 by the hydraulic cylinder 9 and transferred to an appropriate position. At this time, there is nothing around the scrap a ′ that hinders its movement like the conventional mold guide 10. Therefore, a sufficiently large scrap a ′ can be obtained, and the size of the scrap a ′ may vary greatly, so that the amount of the scrap a input is not required to be accurate.

If a self-propelled trolley is used as in this embodiment, the trolley 30 can be arbitrarily moved within the movable range of the bed upper surface. Therefore, the throw-in position of the scrap a is adjusted to the type. Can be changed by increasing the range of work. Further, since the self-propelled carriage 30 is housed in the frame F and the installation place for the entire installation does not become wide, workability is good and safety is ensured. On the other hand, the conventional hydraulic cylinder 8 must be installed so as to project to the front of the bed 1,
It requires a large installation space for the entire installation and has poor workability. However, the effect of vertically supporting the press die 20 can also be obtained by moving the carriage 30 by the hydraulic cylinder 8.

[0031]

Since the present invention is constructed as described above and the press die is supported movably in all directions by the upper and lower parts thereof, the support is also stable. Therefore, the conventional mold guide 10 is not required, the trolley can be downsized, and the size guide of the volume reduction scrap can be eliminated by the mold guide, and the size can be maximized. ,
Compared with the conventional method, the amount of processing per operation is increased and the operation rate is improved. Further, if there is no restriction on volume-reduced scrap, restrictions on the shape and size of input scrap will be relaxed, and it becomes unnecessary to manage the input amount of scrap more severely than in the past. Furthermore, if the truck is downsized, the drive mechanism, frame, etc. can be downsized, and the entire press machine can be downsized.

If the carriage is self-propelled and its lower surface is brought into contact with the bed and is key-connected, the press die can be positioned reliably and the press die does not move unintentionally. , Stabilize. With the self-propelled type, the movement range can be arbitrarily selected, which allows the scrap input position to be determined according to the purpose, the work range is expanded, and the truck can be easily moved to the press die replacement or repair position. Therefore, the work can be performed efficiently. In addition, the self-propelled type can also arbitrarily select the control of its moving speed,
This means that the optimum operation cycle can be selected based on changes in the amount of scrap input, the weight of volume-reduced scrap, etc., and work can be performed efficiently.

Furthermore, if the wheels are configured to run on the rails and the wheels are raised and lowered, damage to the wheels is eliminated and the running of the carriage is stabilized.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment.

FIG. 2 is a partially cut right side view of the same embodiment.

FIG. 3 is a plan view of the same embodiment.

FIG. 4 is a cutaway front view of the same embodiment.

5 is a sectional view taken along line XX of FIG.

FIG. 6 is a sectional view taken along line YY of FIG. 4;

FIG. 7 is a right side view of a partially cut main portion of the same embodiment.

FIG. 8 is a front view of a partially cut main part of the same embodiment.

FIG. 9 is an explanatory view of a wheel lifting operation according to the same embodiment.

FIG. 10 is a perspective view of a lifting slider and a carriage according to the same embodiment.

FIG. 11 is an explanatory view of the locking action between the slider and the press die of the same embodiment.

FIG. 12 is a front view of a conventional example.

FIG. 13 is a partially cut right side view of a conventional example.

FIG. 14 is a cutting plan view of a conventional example.

FIG. 15 is a perspective view of a conventional truck and a press die.

[Explanation of symbols]

 1 bed 2, 20 press die 3, 30 carriage 4 pusher 5 hydraulic cylinder for slider 6 hydraulic cylinder for pusher 7, 70 slider for lifting press die 8 hydraulic cylinder for moving truck 9 hydraulic pressure for discharging compressed volume scrap Cylinder 10 Press die guide 11a, 11b Wheel rail 11a ', 11b' Split rail piece 11a "Wheel groove 12 Key 13 Split rail piece lifting hydraulic cylinder 21 Press die flange 22 Press die groove 31 Press die fitting Combination recess 31a Scrap discharge opening 32a, 32b Truck wheel 32a 'Rail groove fitting protrusion 33 Truck moving motor 34 Reduction gear 36 Key groove 70a Slider press die fitting recess 70b, 70b Slider forked fork portion 71 press die fitting protrusion 72 72 hook 74 sly Guide 75 Gaidogibu 76a pressing bolt 76b tensile bolts a scrap a 'compression compaction already Scrap A press position B scrap supply position F frame

Claims (3)

[Claims] 1. A dolly 30 on which a cylindrical press die 20 is placed is movably provided on the upper surface of the bed 1, and the dolly 30 is
Press position A where the pusher 4 moves up and down above the bed 1.
A hydraulic cylinder 6 for driving the presser 4 is provided on a frame F that reciprocates between the workpiece a and a supply position B where the object a is put into the press die 20, and stands up above the bed 1. , Bed 1
A slider 70 that moves up and down is provided. The slider 70 has a two-pronged hawk shape in plan view having a recess 70a into which the press die 20 is fitted from the supply position B side. 20 is pressed against the lower surface of the flange 21 and the press die 20 is lifted as the slider 70 rises.
In the compression volume reduction press machine for appropriately ejecting the object to be processed a ′ that has come out from the trolley 30, a recess 31 into which the lower part of the press die 20 is fitted is formed on the upper surface of the trolley 30, and the hawk part of the slider 70 is formed. 70b
Is provided with a hook portion 72 that engages with a side surface on the front side of the center line of the flange 21 of the press die 20, and the hook portion 72 is formed by the relative vertical movement of the slider 70 and the press die 20. A press die positioning structure for a compression volume reduction press, characterized in that it can be separated from and attached to. 2. The trolley 30 is self-propelled, and the trolley 3
No. 0 lower surface and the press position A upper surface of the bed 1 are provided with keys 12 or key grooves 36 to be fitted to each other, and the carriage 30 is located at the press position A and descends.
The lower surface abuts on the upper surface of the bed 1, the key 12 is fitted into the key groove 36, and the downward movement of the press die 20 due to the lowering of the carriage 30 causes the press die 2 to be attached to the hook portion 72.
2. The flange 21 of 0 is locked.
The press die positioning structure of the described compression volume reduction press machine. 3. Wheels 32a, 32b of the carriage 30 are allowed to travel on rails 11a, 11b on the bed 1,
The wheels 32a and the rails 11a are fitted to each other to make it difficult to remove the wheels.
The rails on which the wheels 32a and 32b are mounted are divided, and the divided rail pieces 11a 'and 11b' can be moved up and down by the cylinder 13, and by the downward movement, the lower surface of the trolley 30 is the upper surface of the bed 1. The press die positioning structure of the compression volume reduction press according to claim 2, characterized in that the press die positioning structure.