JP5866175B2 - Mold moving apparatus, mold moving apparatus for bending apparatus, and bending processing system - Google Patents

Description

The present invention relates to a mold moving apparatus , a mold moving apparatus for a bending apparatus, and a bending system, and in particular, a mold moving apparatus and a bending process for easily performing a mold exchanging operation such as a bending apparatus. The present invention relates to a mold moving apparatus for an apparatus and a bending system including a mold moving apparatus for the bending apparatus.

2. Description of the Related Art Conventionally, there is a tool box disclosed in Patent Document 1, for example, as a mold moving apparatus used when exchanging molds in a bending apparatus.
This tool box includes a main body 10 and a slide shelf 30 that enters and exits the inside of the main body 10, and a mold such as a punch 80 and a die 90 is stored in the main body 10 by using the slide shelf 30. It can be taken out.
Moreover, by attaching the caster 70 to the main body 10, the main body 10 can be easily moved between the bending apparatus and the mold storage place.

Japanese Patent Laid-Open No. 10-71499

By the way, when the workpiece is a thick plate (for example, 10 mm), a mold for bending the workpiece becomes very heavy, and there are some which are 80 kg or 100 kg.
In addition, such a heavy metal mold has a large size exceeding 800 mm in length and 60 mm in width.
Therefore, even if such a heavy and large mold is stored in the main body 10 of the tool box disclosed in Patent Document 1 and transported from the mold storage location to the immediate vicinity of the bending apparatus for mold replacement, It is very difficult for an operator to take out this heavy metal mold from the tool box.
Usually, in the case of a heavy mold, the mold is lifted by a crane and transported between the mold storage place and the bending apparatus. However, it is difficult to lift and carry a heavy metal mold with a crane, and it is not a work that anyone can do.

Even when the mold is not a heavy mold, for example, even if the mold is placed on the carriage from the mold storage location and transported to the side of the bending apparatus, the work of lifting the mold to the height of the bending apparatus table is not Difficult and burdensome for workers.
Also, considering the general arrangement of the bending device and the surrounding equipment, the bending is performed in such a direction that the mold is mounted on the bending device, that is, the direction in which the length of the mold is the left-right direction of the bending device. In many cases, the carriage cannot be moved from the front side of the apparatus. In this case, the carriage must be moved from the side of the bending machine, and the orientation of the mold with the longitudinal direction of the bending machine being the longitudinal direction must be changed to the orientation in which the lateral direction is the longitudinal direction after being lifted from the carriage. The work is more difficult and the burden on the worker is greater.
On the other hand, when the used mold removed from the bending apparatus is lowered from the table and placed on the carriage, the same operation is performed in the reverse procedure, so that the operation is difficult and the burden on the operator is large.

  These problems are not limited to the mold exchanging work in the bending apparatus, and when exchanging the mold, the mold is moved up and down between a transportation device such as a carriage or a storage device and the table of the processing device. This is the same in the mold exchanging work of the processing apparatus that requires the work to be moved including.

Therefore, the problem to be solved by the present invention is a bending system including a mold moving device, a mold moving device for a bending device, and a mold moving device for the bending device, which facilitate mold replacement work. And to provide.

In order to solve the above problems, the present invention has the following configuration.
1) A mold moving device for moving a mold,
A cart having a mold holding portion and wheels for holding a mold, and capable of linear movement in forward and reverse directions;
An arm whose one end side is rotatably supported between a first position and a second position around a rotation axis extending in the vertical direction;
A cart holding portion that is attached to the other end of the arm and detachably holds the cart; the cart holding portion between a first height and a second height that is higher than the first height; An elevating part for raising and lowering;
When the cart is held by the cart holding portion at the second height and the arm is in the second position, the wheel of the cart is located immediately below the cart and detached from the cart holding portion. A roadway section that enables the linear movement of the cart with grounding,
Equipped with a,
The mold has a stepped portion with a reduced width portion,
The mold holding part can be brought into and out of contact with each other in the width direction of the mold and can engage and disengage the hook set that engages with the stepped part at a position close to each other. And a contact / separation mechanism for manually operating the contact / separation operation,
The contact / separation operation element is a mold moving device that is disposed on a side of the cart far from the rotation axis in a state where the cart is held by the cart holding unit .
2) The mold holding portion includes an interval adjusting mechanism that adjusts an opposing interval of the hook set, and an interval adjusting operator for manually adjusting the opposing interval,
2. The mold movement according to 1), wherein the distance adjusting operation element is disposed on a side of the cart far from the rotation axis in a state where the cart is held by the cart holding unit. Device.
3) A mold moving device for a bending apparatus used for moving a mold in a mold exchanging operation of the bending apparatus ,
A cart having a mold holding portion and wheels for holding a mold, and capable of linear movement in forward and reverse directions;
An arm whose one end side is rotatably supported between a first position and a second position around a rotation axis extending in the vertical direction;
A cart holding portion that is attached to the other end of the arm and detachably holds the cart; the cart holding portion between a first height and a second height that is higher than the first height; An elevating part for raising and lowering;
When the cart is held by the cart holding portion at the second height and the arm is in the second position, the wheel of the cart is located immediately below the cart and detached from the cart holding portion. A roadway section that enables the linear movement of the cart with grounding,
A mold moving device for a bending apparatus characterized by comprising:
4) a bending apparatus that has a table and processes a workpiece with a mold;
A cart having a mold holding portion and wheels capable of holding the mold and capable of linear movement in forward and reverse directions, and one end side of the first position and the second position around the vertical rotation axis An arm that is rotatably supported between the arm and a cart holding part that is attached to the other end of the arm and holds the cart detachably. The cart holding part has a first height and the first An elevating part that moves up and down between a second height higher than the height of the cart, and the cart is held by the cart holding part at the second height and the arm is in the second position. A die moving device for a bending apparatus , comprising: a roadway portion that is located directly below the wheel and that allows the linear movement of the cart by allowing the wheels of the cart that have been detached from the cart holding portion to contact the ground;
Comprising
The bend characterized in that the carriage section and the upper surface of the table have the same height and are configured to be close to each other so that the cart can reciprocate between the carriage section and the table. It is a processing system.
5) The mold holder is
When the arm is in the first position, the mold is held such that the longitudinal direction is the first direction;
( 4) The mold according to ( 4) , wherein when the arm is in the second position, the mold is held such that a longitudinal direction thereof is a second direction orthogonal or oblique to the first direction. This is a bending system.
6) The longitudinal direction of the mold held by the mold holding part is the front-rear direction of the bending apparatus at the first position of the arm, and the left-right direction of the bending apparatus at the second position. ,
When the cart holding part is in the first height position, the mold placed on the floor can be held by the mold holding part, and when the cart holding part is in the second height position, The mold moving device for a bending apparatus according to 3), wherein the lower surface of the mold held by the mold holding portion is at a position equal to or higher than the height of the upper surface of the table of the bending apparatus. is there.

  According to the present invention, it is possible to obtain an effect that mold exchanging work is facilitated.

It is a front view for demonstrating the Example of the processing system of this invention. It is a typical top view for demonstrating the Example of the processing system of this invention. It is the perspective view seen from the right rear upper side for demonstrating the Example of the metal mold | die moving apparatus of this invention. It is the perspective view seen from the right front upper side for demonstrating the Example of the metal mold | die moving apparatus of this invention. It is a perspective view for demonstrating the cart in the Example of the metal mold | die moving apparatus of this invention. It is a front view for demonstrating the cart in the Example of the metal mold | die moving apparatus of this invention. It is a top view for demonstrating the hook contact-and-separation mechanism in the Example of the metal mold | die moving apparatus of this invention. It is a side view for demonstrating the hook contact-and-separation mechanism in the Example of the metal mold | die moving apparatus of this invention. It is a front view for demonstrating the hook contact-and-separation mechanism in the Example of the metal mold | die moving apparatus of this invention. It is a perspective view for demonstrating the cart holding | maintenance part in the Example of the metal mold | die moving apparatus of this invention. It is a perspective view for demonstrating the state which hold | maintained the cart with the cart holding | maintenance part in the Example of the metal mold | die moving apparatus of this invention. It is a schematic diagram for demonstrating rotation of the arm in the Example of the metal mold | die moving apparatus of this invention. It is a perspective view for demonstrating operation | movement of the auxiliary wheel in the Example of the metal mold | die moving apparatus of this invention.

The preferred embodiments of the present invention will be described with reference to FIGS.
In each figure, the respective directions in the vertical and horizontal directions are basically defined by the directions shown in FIGS.

<Example>
First, with reference to FIG. 1, the schematic structure of the metal mold | die moving apparatus 51 of an Example and the processing apparatus 1 by which the metal mold | die which moves with the metal mold | die moving apparatus 51 is mounted / removed is demonstrated.
A machining system KS is configured including the mold moving device 51 and the machining device 1.
The processing apparatus 1 is a bending apparatus, for example.
The processing apparatus 1 has side plates 16 and 17 on the left and right sides of the machine body, and hydraulic cylinders 14 and 15 are attached to the upper portions of the side plates 16 and 17, respectively.
With this configuration, for example, when the operator S steps on a foot pedal (not shown), the hydraulic cylinders 14 and 15 are operated so that the upper table 12 to which the punch P that is the die K is mounted moves up and down. It has become.
Further, a lower table 13 to which a die D as a mold K is mounted is provided directly below the upper table 12.
Further, an abutment (not shown) of the back gauge device is arranged behind the lower table 13 (behind the paper surface in FIG. 1), and the work W (the operator S in FIG. The workpiece W is bent by the punch P and the die D when the upper table 12 is lowered after the positioning.
The processing apparatus 1 shown in FIG. 1 is a descending bending apparatus, but may be an ascending bending apparatus in which the lower table 13 moves up and down, and further, the die D on the upper table 12 and the lower table 13. The punch P may be mounted.

A mold moving device 51 is installed on the side of the processing device 1. In FIG. 1, the example installed in the right side of the processing apparatus 1 is shown.
The mold moving device 51 includes a pedestal 52 and a main body 53 attached to the upper surface of the pedestal 52.

FIG. 2 is a schematic layout diagram viewed from above in FIG. 1 for explaining the layout of the machining device 1 and the mold moving device 51 in the machining system KS. In FIG. 2, only the main part of the processing apparatus 1 is shown for easy understanding.
FIG. 3 is a perspective view of the mold moving device 51 as seen from the diagonally upper right side of FIG. 1, and FIG. 4 is a perspective view of the mold moving device 51 as seen from the diagonally upper right side of FIG. 3 and 4 show an example in which a mold stocker capable of storing a mold therein is applied as the pedestal 52.

As shown in FIGS. 2 to 4, the mold moving device 51 includes a cart 54 that can hold the mold K, and a portion on the front side of FIG. Is a movable pedestal carriageway 52t.
The cart 54 is movable between the pedestal carriageway 52 t and the lower table 13. That is, the portion on the near side in FIG. 1 can be moved in the left-right direction. Hereinafter, a portion of the lower table 13 where the cart 54 moves is referred to as a table road 13t for convenience.
The height position of the pedestal carriageway 52t is set to the same height as the table carriageway 13t so that no step is generated between the pedestal carriageway 52t and the table carriageway 13t. The cart 54 linearly reciprocates in the direction of the arrow D1 along the pedestal road 52t and the table road 13t to convey or carry out the mold.

As shown in FIG. 1 to FIG. 3, the main body 53 of the mold moving device 51 is roughly composed of a column 55 standing up, a bearing 55 a integrally attached to the column 55, and a bearing unit. 55a, an arm 56 whose one end is rotatably supported around the rotation axis C1, a pole 56a which is a support column erected upward on the other end of the arm 56, and an air supported by the pole 56a And a cylinder 56b.
A cart holding portion 56c is attached to the tip of a rod 56b1 protruding so as to expand and contract from the lower portion of the air cylinder 56b.
The arm 56 is rotatable around the rotation axis C1 within a predetermined angle range θa by a bearing portion 55a. For example, θa is 90 °, and as shown in FIG. 2, the arm 56 rotates between an “A position” where the extending direction of the arm 56 is the left-right direction and a “B position” where the extending direction is the front-rear direction.
The arm 56 is selectively held at the “A position” and the “B position” by a lock mechanism, which will be described later, and its rotation is restricted. 1 and 3, the arm 56 is shown in the “A position” state.
The air cylinder 56b extends and contracts the rod 56b1 according to an instruction from the outside when the arm 56 is at the “A position”. In FIG. 1, the “retracted position” that is the state in which the rod 56 b 1 is most contracted is indicated by a solid line, and the “extended position” that is the most extended state is indicated by a broken line. In FIG. 3, the rod 56b1 is shown in the "contracted position".
The arm 56 may be configured not to rotate from the “A position” to the “B position” when the rod 56b1 is in the “extension position”.
The rod 56b1 of the arm 56 is set to the "contracted position" at the "B position", and the cart holding portion 56c at the tip of the rod 56b1 can hold the cart 54 on the pedestal carriageway 52t, or the pedestal with the held cart 54. It can be opened on or directly above the roadway 52t.

Next, a specific structure of the mold moving device 51 will be described in detail.
<About cart 54>
The cart 54 will be described in detail with reference mainly to FIGS. 5 to 6 (a) and 6 (b). 5 is an external perspective view of the cart 54 as viewed obliquely from the upper left front side, and FIGS. 6A and 6B are front views showing a state in which a die D as a mold K is held by the cart 54. FIG. .
6A shows a state in which one die D having a predetermined unit standard length is held, and FIG. 6B shows a state in which two dies D are held in series. The standard length of the die D includes a short type shown in FIGS. 6A and 6B and a long type twice as long. That is, the cart 54 can hold two short-type dies or one long-type die D.
The cart 54 is a mold carrier capable of linear movement in the left-right direction in FIGS. 6A and 6B while holding the punch P or the die D.
The cart 54 has a main body 54a formed in a plate shape with the left-right direction of FIG. Moving wheels 54b and 54c are attached to both ends of the main body 54a, respectively. The wheels 54b and 54c may be wide rollers 54b1 and 54c1 that are at least in line contact with the moving surface instead of point contact. The wheel 54b on the left side in FIG. 6 is rotatable in the direction of the arrow D5 about the rotation axis C5 in the direction orthogonal to the paper surface. The rollers 54b1 and 54c1 may be formed of a material having at least a grounding portion having flexibility. Examples of materials having flexibility are rubber and elastomer.

  By making the wheels 54b and 54c line contact rollers instead of free bearings that make point contact with the surface to be moved, even if the cart 54 holds a heavy metal mold, an indentation is made on the surface to be moved. The fear is reduced. Further, if the rollers 54b1 and 54c1 are made of a flexible material, they are brought into surface contact with the surface to be moved, so that there is almost no possibility that the surface to be moved is damaged.

The body portion 54a is provided with four pairs of mold hooks, that is, a pair of hooks F1 to F4, which face each other in the short direction (the front and back direction in FIG. 6) and can be brought into and out of each other with a predetermined stroke. ing.
The hook groups F1 to F4 extend downward from the main body portion 54a, and a pair of hooks (F1a, F1b) to (F4a, F4b).

Each hook set has the same shape, and the hook set F1 will be described in detail with reference to FIG.
The hook set F1 includes a left hook F1L and a right hook F1R with respect to the forward direction of the cart 54 (the arrow DRf direction in FIG. 5).
The hook F1L is connected to the hook contact / separation mechanism FK on the upper side and has a base F1La extending downward and a claw F1Lb bent from the tip of the base F1La and extending toward the hook F1R.
Similarly, the hook F1R has a base portion F1Ra and a claw portion F1Lb that are symmetrical to the hook F1L.
By hooking the hook portions F1Lb to F4Rb of each hook to a step portion Dm (see FIGS. 4 and 6) formed by the reduced width on the side surface of the die D, the two dies D are respectively connected to the hook sets F1, F2, and the hooks. It is held so as to be held by the set F3, F4.

<Hook contact / separation mechanism>
Next, the hook contact / separation mechanism FK (see FIG. 5) will be described with reference to FIGS.
The hook contact / separation mechanism FK synchronizes the hook assembly F1 and the hook assembly F2 and synchronizes the hook assembly F3 and the hook assembly F4 so that the mold of the unit standard length can be stably held. This is a mechanism for making contact and separation. Further, the hook contact / separation mechanism FK can adjust the distance between hooks F1 to F4 facing each other.
Each of the hook groups F1 to F4 is moved up and down with a predetermined stroke by operating a hook lifting handle F10 (see FIGS. 5 and 6).

  The hook contact / separation mechanism FK includes two sets of an contact / separation mechanism FK1 for synchronously operating the hook sets F1, F2 and an contact / separation mechanism FK2 for synchronously operating the hook sets F3, F4. Since the two sets have a symmetrical common structure, the contact / separation mechanism FK2 that operates the hook sets F3 and F4 synchronously will be described as a representative. 7 is a top view of the contact / separation mechanism FK2, FIG. 8 is a lower side view, and FIG. 9 is a left side view.

  The contact / separation mechanism FK2 includes a rectangular plate-shaped base portion F12 whose four edges are raised as flanges F12a to F12d, and extends in the left-right direction at substantially the center of the base portion F12, and has flanges F12b and F12d at both ends. The shaft F13 is rotatably supported on the left and right sides of the shaft F13, and is slidable with a predetermined stroke in the longitudinal direction of the shaft F13 while synchronizing with the rotation of the shaft F13. Sleeves F14a, F14b having male threads, nuts F5a, F5b screwed into a pair of male threads of the sleeves F14a, F14b, one end connected to the sleeves F14a, F14b, and the other end rotated about the rotation axis C7. Links F6a and F6b respectively connected to the positions 180 ° of the rotating plate F7 A handle F8 which is an operator for rotating the rotation plate F7 by 180 ° by hand, a knob F9 which is an operator for rotating the shaft F13 by hand, and a knob F11 which is gripped when the cart is moved. , And is configured.

In this configuration, the hook F3L and the hook F4L are connected to the nut F5a and move in the front-rear direction in synchronization with the nut F5a. The hook F3R and the hook F4R are connected to the nut F5b and move in the front-rear direction in synchronization with the nut F5b. It is supposed to be.
Further, the pair of male screws formed on the sleeves F14a and F14b are opposite to each other, and when the knob F9 is turned by hand, for example, the nut F5a and the nut F5b are mutually rotated by rotating the shaft F13 in the forward direction. It moves closer and moves away from each other by turning in the opposite direction.
Therefore, the operator can finely adjust the distance between the opposing hooks F3L and F3R and the distance between the hooks F4L and F4R by turning the knob F9. The knob F9 is an interval adjusting operator.

  As described above, the spacing adjustment mechanism FKT between the opposing hooks is configured including the shaft F13, the sleeves F14a and F14b, the nuts F5a and F5b, the links F6a and F6b, the rotating plate F7, and the knob F9.

In the state shown in FIG. 7, the link F6b connected to the sleeve F14b far from the rotation axis C7 is connected to the front side of the rotation plate F7, and the sleeve F14a near to the rotation axis C7 is connected to the rear side. The link F6a connected to is connected. That is, the state shown in FIG. 7 is a state in which the distance between the hook F4L and the hook F4R is farthest (wide). From this state, when the operator rotates the handle F8 by 180 ° in the clockwise direction in FIG. 7, the sleeve F14b is closest to the rotation axis C5 and the sleeve F14a is farthest from the rotation axis C5. . That is, the distance between the hook F4L and the hook F4R is the closest (narrow) state.
Accordingly, when the operator turns the handle F8, the distance between the hooks F4L and F4R facing each other can be changed greatly. That is, the “holding state” in which the opposing hooks are brought close to each other and the distance between the two is reduced to hold the mold K, and the mold K that is separated from each other and the distance between the hooks is widened can be detached. "Open state" can be selected. That is, the handle F8 is a contact / separation operation element that makes the hooks facing each other contact and separate.

  The hook elevating handle F10 (see FIGS. 5 and 6) is connected to the hooks F3L, F3R, F4L, and F4R by a link mechanism (not shown), and the hooks F3L, F3R, F4L, and F4R are connected by the rotation of the hook elevating handle F10. It can be moved up and down with a predetermined stroke. The hook raising / lowering handle F10 is a raising / lowering operation element which raises / lowers the hook assembly, that is, raises / lowers the held mold in the cart.

The hook contact / separation mechanism FK includes a knob F9 that finely adjusts the distance between the hooks, a handle F8 that selects a holding state and an open state of the mold K, and a knob F11 that is gripped when the cart is moved. It is disposed on one side with respect to the base portion F12, that is, on the front side in FIG. 7 and on the side far from the rotation axis C7.
As a result, the work for holding the mold K on the cart 54, that is, the holding of the mold K placed on a predetermined surface, the lifting operation for lifting the held mold K from the predetermined surface by a predetermined amount, and the optimal mold K are performed. All the adjustment work of the hook interval for holding in the direction can be performed from one direction side. Therefore, it is not necessary for the operator to change the standing position according to each operation, and the work efficiency is improved. In addition, since it is not necessary to insert a hand between devices (for example, between the die moving device 51 and another device adjacent thereto) during work, safety is maintained at a high level even if an unexpected situation occurs. Is done.
In other words, the hook contact / separation mechanism FK is also a mold holding portion KH for holding the mold K.

<Regarding raising and lowering of the cart 54 by the air cylinder 56b>
The mold moving device 51 holds the cart 54 and can be moved up and down with a predetermined stroke by the air cylinder 56b. The predetermined stroke is, for example, between the floor surface and the lower table 13 of the processing apparatus 1.
This will be described mainly with reference to FIGS. 5, 6, 10, and 11.

5 and 6, four engaging pieces 54d raised in the vertical direction are provided on the upper surface side of the main body 54a of the cart 54. Each engagement piece 54d has a slit 54d1 cut to the left with the right end as an open end.
The open end side of the slit 54d1 is a tapered portion 54d2 whose width expands toward the open end side for guidance.
A cart holding portion 56c provided at the tip of the rod 56b1 in the air cylinder 56b engages with the slit 54d1.

FIG. 10 is a perspective view showing the cart holding portion 56c, and FIG. 11 is a perspective view showing a state where the cart 54 is held by the cart holding portion 56c.
The cart holding portion 56c includes a flat rectangular parallelepiped main body 56ch and engagement pins 56c1 to 56c4 that protrude outwardly at the opposing long side surfaces near the four corners of the main body 56ch. As shown in FIG. 11, the positions and shapes of the engagement pins 56c1 to 56c4 are set so that the engagement pins 56c1 to 56c4 engage with the slits 54d1 of the engagement pieces 54d, respectively. Hereinafter, the state shown in FIG. 11 is referred to as a “cart holding state”.

When the air cylinder 56b is expanded and contracted in the cart holding state shown in FIG. 11, the cart 54 is moved along the axis C3 extending in the vertical direction between the “contracted position” and the “extended position” shown in FIG. Can be moved up and down.
The expansion / contraction operation of the air cylinder 56b is performed by an operator's operation on the lifting operation box 57 (see FIG. 3).
Referring to FIG. 3 as an example, the cart 54 can be lowered to a position where at least the die D, which is the die K placed on the carriage DS, can be held by the hook sets F1, F2 by the expansion and contraction of the rod 56b1 of the air cylinder 56b. In addition, the lower surface of the die D, which is the die K held on the carriage DS, can be raised to a position at least higher than the height of the upper surface of the lower table 13 of the processing apparatus 1. More specifically, the ground contact positions (lower end portions) of the wheels 54b and 54c of the cart 24 can be raised from the upper surface of the lower table 13 to, for example, 20 mm to 30 mm above. A specific example of the lifting stroke length is 800 mm.
Since the cart holding part 56c is connected to a moving block in a linear guide (not shown) that extends in the vertical direction and is arranged in parallel with the air cylinder 56b, the ascending / descending trajectory is accurately determined.

<About rotation of arm 56>
The arm 56 is rotatable between “A position” and “B position”. This rotation may be configured only when the air cylinder 56b is in the “contracted position”.
If the cart 54 holds the mold K, the mold K can be moved between the “A position” and the “B position” together with the cart 54 by the rotation of the arm 56. By this movement, the direction of the mold K can be changed between the angle ranges θa on the arc-shaped track of the cart holding portion 56c. The arm 56 is locked by the lock mechanism RK at the “A position” and the “B position”.

The lock mechanism RK will be described with reference to FIGS.
FIG. 12 is a schematic plan view seen from above for explaining the rotation of the arm 56.
The mold moving device 51 has a support bar 58 attached in parallel to the arm 56. One end side of the support bar 58 is supported so as to rotate around the rotation axis C <b> 2 by a bearing portion 55 b attached integrally to the support column 55. The position of the rotation axis C2 is a position deviated forward and left with respect to the rotation axis C1 that is the rotation center of the arm 56 (see FIG. 12).
A bracket 56d having an index plunger 56d1 is attached to the arm 56 at a position close to the root side by a predetermined distance from the tip.
The support bar 58 rotates about different rotation centers while being synchronized with the arm 56. Further, two holes, a tip-side hole 58a and a root-side hole 58b, are provided apart from each other in the extending direction.
When the arm 56 is in the “A position”, the two holes are engaged with the index plunger 56d1 in the tip side hole 58a, and when the arm 56 is in the “B position”, the index hole 56b is indexed. The positions and intervals of both holes 58a and 58b are determined so that the plunger 56d1 is engaged.
With this structure, the arm 56 is locked by the engagement of the index plunger 56d1 at two positions, “A position” and “B position”. The lock can be released by rotating the arm 56 with a predetermined force, and the degree of the force can be appropriately set by selecting the type of the index plunger 56d1. The index plunger 56d1 is an example of locking means that engages with the holes 58a and 58b, and is not limited to this. For example, a ball plunger may be used.
When turning the arm 56 by hand, it is preferable to hold the handle 57a provided in the lifting operation box 57.

  The mold moving device 51 is configured to determine the rotational position of the arm 56 by a sensor (not shown), and to allow the air cylinder 56b to be expanded and contracted only when the arm 56 is at the “A position”. It is good to be. In addition, a sensor for detecting the degree of expansion / contraction of the air cylinder 56b may be provided, and the arm 56 may be allowed to rotate only when the rod 56b1 is in the “contracted position”.

<About moving the mold>
The operation of placing the die D, which is the mold K to be used on the carriage DS, to be used from now on the lower table 13 of the processing apparatus 1 for exchanging the mold using the mold moving device 51 described above. To do.

  First, as shown in FIG. 3, the carriage DS on which the die D is placed is moved to the side of the pedestal 52 from a mold storage place (not shown). At this time, the rod 56b1 of the air cylinder 56b is set to the “contracted position”, and the die D has the longitudinal direction of the processing apparatus 1 that is in the same direction as the cart 54 held by the cart holding part 56c as a longitudinal direction, and the hook set F1 of the cart 54 , F2. The raising / lowering knob of the cart 54 is set to the lowering side, and the hook sets F1, F2 are set to the maximum opened position ("open state") by the handle F8.

  The lift operation box 57 is operated, the air cylinder 56b is operated, the rod 56b1 is extended toward the “extension position”, and the claw portions F1Lb to F2Rb of the hook assemblies F1 and F2 are below the step portion Dm of the die D. To be located. Next, the handle F8 is rotated to reduce the distance between the hooks F1L and F1R and the distance between the hooks F2L and F2R (in the closing direction) to the “holding state”, and the claws F1Lb to F2Rb are stepped portions Dm. To be caught in. Then, the die D is lifted by the hook groups F1, F2 with the lifting knob ascending, and floated from the carriage DS.

  The lifting / lowering operation box 57 is operated to operate the air cylinder 56b to contract the rod 56b1 toward the “contracted position”. When the rod 56b1 is in the “contracted position”, the ground contact portions of the wheels 54b and 54c of the cart 54 are located at the same level as or slightly above the pedestal carriageway 52t.

The operator applies a force equal to or greater than a predetermined force to the arm 56 so as to rotate from the “A position” to the “B position”. The predetermined force is a force for releasing the ball plunger 56d1 from the hole 58a of the support bar 58, and by applying a force more than this, the arm 56 is unlocked and rotated.
When the arm 56 rotates and reaches the “B position”, the ball plunger 56d1 engages with the hole 58b of the support bar 58, and the rotation is restricted.

In this state, the cart 54 is directly above the pedestal carriageway 52t. Here, when a gap is set between the wheels 54b and 54c of the cart 24 and the pedestal carriageway 52t, the rod 56b1 is extended to lower the cart 54, and the wheels 54b and 54c are grounded to the pedestal carriageway 52t. Then, by holding the handle bar 54e (see FIG. 5) of the cart 54 by hand and moving it to the left, the engagement piece 54d is disengaged from the engagement pins 56c1 to 56c4, and the cart 54 moves on the pedestal carriageway 52t. .
The pedestal carriageway 52t may be provided with a track made up of a guide or a groove for guiding and driving the wheels 54b and 54c of the cart 54, and the cart 54 moves straight on the lower table 13.

According to the reverse procedure described above, the used mold K held by the cart 54 on the lower table 13 can be placed on the carriage DS on the floor surface.
Thus, by using the mold moving device 51, the mold K such as the die D placed at the floor or a position close to the floor can be easily and safely moved on the lower table 13 by anyone. Can be made.
Further, since the movement of the arm 56 is included in the operation of the mold moving device 51, the state in which the processing device 1 is carried by the carriage DS from the right side to the right side surface of the processing device 1, that is, the length of the mold It is possible to easily change the posture in the left-right direction from the state in which the direction of the direction is the front-rear direction of the processing apparatus 1.
Therefore, the mold moving device 51 is well adapted to the actual installation environment of the processing device 1 and has a very high utility value.

The cart 54 that has moved from the pedestal carriageway 52t onto the lower table 13 is provided on the cart 54, as shown in FIG. The auxiliary wheel unit 54f is lifted upward against the biasing force of the provided coil spring 54f1, so that the auxiliary wheel 54f2 moves on the shoulder portion Dca of the die Dc. The auxiliary wheel unit 54f can be fixed at a suitable position according to the height of the die Dc.
Further, the wheel 54b is rotated around the rotation axis C5 and is inserted into the V groove Dcb of the die Dc so as to travel in the V groove Dcb.
In this state, the cart 54 is moved toward the die Dc in the direction of the white arrow in FIG. 13, and the movement is stopped when the die D contacts the die Dc. Then, the die C is lowered onto the lower table 13 with the hook raising / lowering handle F10 being lowered.
Thereby, the die D moved later can be arranged without a gap with respect to the die Dc moved first.

  It goes without saying that the embodiments of the present invention are not limited to the above-described configuration, and may be modified without departing from the scope of the present invention.

The processing apparatus is not limited to a bending apparatus. If the mold used for the processing apparatus has a reduced width portion so that it can be held by the hook sets F1 to F4, the mold moving device 51 can perform the same movement.
The shapes of the hooks F1L to F4L and F1R to F4R are not limited to the above-described substantially L shape. It only needs to be able to hold the die against the gravity by associating the shape of the mold. For example, a hole may be provided on the side surface of the mold, and a round pin that engages with the hole may be provided on the hook.
The pedestal 52 may be a simple table that does not have a mold storing function, or may be a mold stacker or other table that has a storing function as shown in FIGS.
When the pedestal 52 is a mold stacker and has a slide shelf 52s (see FIG. 3) that can enter and exit the pedestal 52, an air cylinder is provided so that the mold Kd placed on the slide shelf 52s can also be held by the cart 54. The position of the rod 56b1 of 56b, that is, the elevating orbit of the cart 54 may be set.
The raising / lowering of the cart 54 is not limited to that performed by the air cylinder 56b. You may comprise so that the cart 54 may be raised / lowered using a motor, a chain, a belt, etc.
The rotation of the arm 56 is not limited to being performed manually. A drive unit such as a motor may be provided, and the arm 56 may be rotated by the rotational force of the drive unit.
The rotation angle of the arm 56 is not limited to 90 °. The longitudinal direction of the mold K held by the cart 54 is orthogonal to the “A position” and the “B position” when the rotation angle of the arm 56 is 90 °, and the rotation angle of the arm 56 is When it is not 90 °, the longitudinal direction is an oblique direction.

DESCRIPTION OF SYMBOLS 1 Processing apparatus 12 Upper table, 13 Lower table, 13t Table roadway 14,15 Hydraulic cylinder, 16, 17 Side plate 51 Mold moving device 52 Base, 52t Base roadway 53 Main body part 54 Cart 54a Main body part, 54b, 54c Wheel, 54b1 , 54c1 Roller 54d Engagement piece, 54d1 slit, 54d2 Tapered part 54e Handle bar 54f Auxiliary wheel unit, 54f1 Coil spring, 54f2 Auxiliary wheel 55 Column, 55a Bearing part 56 Arm, 56a Pole, 56b Air cylinder, 56b1 Rod 56c Cart holding Part, 56ch body, 56c1 to 56c4 engagement pin 56d bracket, 56d1 ball plunger 57 lifting operation box, 57e handle 58 support bar, 58a, 58b hole C1, C2, C3 axis D, Dc, Dd die (die)
Dm Step, Dca shoulder, Dcb V groove, DS truck F1-F4 hook set F1L-F4R, F1L-F1R hook F1La base, F1Lb claw F5a, F5b nut, F6a, F6b link, F7 rotating plate F8 handle, F9 Knob, F10 Hook lifting handle F12 Base part, F12a to F12d Flange F13 Shaft F14a, F14b Sleeve FK Hook contact / separation mechanism, FK1, FK2 Contact / separation mechanism FKT Interval adjustment mechanism K Mold, KH Mold holding part KS Processing system P Punch

Claims (6)

A mold moving device for moving a mold,
A cart having a mold holding portion and wheels for holding a mold, and capable of linear movement in forward and reverse directions;
An arm whose one end side is rotatably supported between a first position and a second position around a rotation axis extending in the vertical direction;
A cart holding portion that is attached to the other end of the arm and detachably holds the cart; the cart holding portion between a first height and a second height that is higher than the first height; An elevating part for raising and lowering;
When the cart is held by the cart holding portion at the second height and the arm is in the second position, the wheel of the cart is located immediately below the cart and detached from the cart holding portion. A roadway section that enables the linear movement of the cart with grounding,
Equipped with a,
The mold has a stepped portion with a reduced width portion,
The mold holding part can be brought into and out of contact with each other in the width direction of the mold and can engage and disengage the hook set that engages with the stepped part at a position close to each other. And a contact / separation mechanism for manually operating the contact / separation operation,
The mold moving device is characterized in that the contact / separation operation element is disposed on a side of the cart far from the rotation axis in a state where the cart is held by the cart holding unit . The mold holding unit includes an interval adjusting mechanism that adjusts an opposing interval of the hook set, and an interval adjusting operator for manually adjusting the opposing interval,
The spacing adjustment operating element, in a state in which the cart is retained in the basket holder, of the cart, moving mold according to claim 1, characterized in that it is arranged on the side far from the rotation axis apparatus. A mold moving apparatus for a bending apparatus used for moving a mold in a mold exchanging operation of the bending apparatus ,
A cart having a mold holding portion and wheels for holding a mold, and capable of linear movement in forward and reverse directions;
An arm whose one end side is rotatably supported between a first position and a second position around a rotation axis extending in the vertical direction;
A cart holding portion that is attached to the other end of the arm and detachably holds the cart; the cart holding portion between a first height and a second height that is higher than the first height; An elevating part for raising and lowering;
When the cart is held by the cart holding portion at the second height and the arm is in the second position, the wheel of the cart is located immediately below the cart and detached from the cart holding portion. A roadway section that enables the linear movement of the cart with grounding,
A mold moving device for a bending apparatus, comprising : A bending device that has a table and processes the workpiece with a mold;
A cart having a mold holding portion and wheels capable of holding the mold and capable of linear movement in forward and reverse directions, and one end side of the first position and the second position around the vertical rotation axis An arm that is rotatably supported between the arm and a cart holding part that is attached to the other end of the arm and holds the cart detachably. The cart holding part has a first height and the first An elevating part that moves up and down between a second height higher than the height of the cart, and the cart is held by the cart holding part at the second height and the arm is in the second position. A die moving device for a bending apparatus , comprising: a roadway portion that is located directly below the wheel and that allows the linear movement of the cart by allowing the wheels of the cart that have been detached from the cart holding portion to contact the ground;
Comprising
The bend characterized in that the carriage section and the upper surface of the table have the same height and are configured to be close to each other so that the cart can reciprocate between the carriage section and the table. Processing system. The mold holder is
When the arm is in the first position, the mold is held such that the longitudinal direction is the first direction;
5. The mold according to claim 4 , wherein when the arm is in the second position, the mold is held such that a longitudinal direction thereof is a second direction orthogonal or oblique to the first direction. Bending system. The longitudinal direction of the mold held by the mold holding part is the front-rear direction of the bending apparatus at the first position of the arm, and the left-right direction of the bending apparatus at the second position,
When the cart holding part is in the first height position, the mold placed on the floor can be held by the mold holding part, and when the cart holding part is in the second height position, 4. The mold moving apparatus for a bending apparatus according to claim 3, wherein the lower surface of the mold held by the mold holding section is at a position equal to or higher than the height of the upper surface of the table of the bending apparatus.