JPH10291040A - Die attaching/detaching and tightening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach/detach a die to a surface plate, and to correctly position and fix the die to the prescribed position. SOLUTION: A positioning key 11 and a key groove 22 to slide a base plate 21 in the longitudinal direction and position the base plate in the right-to-left direction are arranged between a surface plate 1 and the base plate 21 of a die 20. A stopper member which is abutted on the distal end of the base plate 21 to perform positioning in the longitudinal direction is arranged to the distal side on the upper surface of the surface plate 1. An upwardly inclined surface 23 to be pressed is formed on the right and left side parts of the base plate 21, and a pair of pressing members 40 having a pressing surface 41 respectively corresponding to the surfaces 23 to be pressed are arranged. To a pair of the pressing member 40, a tightening means 50 to fix the base plate 21 to the surface plate 1 by advancing the pressing members 40, and pressing the surfaces 23 to be pressed of the base plate 21 with the pressing surface 41, is arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold clamping and demounting device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, in order to removably fix a mold 120 to an upper surface of a base plate 101 on a base plate 121 thereof, a plurality of presser fittings 140 are provided on the upper surface of the base plate 101. Is the tightening bolt 143 and the slot 14
4 so that the movement can be adjusted. When the mold 120 is to be attached to and detached from the platen 101, the tightening bolt 143 is first loosened.
In a state where 0 is retracted to the retracted position, the platen 101
Is mounted on the base plate 121 on the upper surface of the mold. Here, the mold 120 is placed on the platen 101.
Is moved and adjusted in the front-back direction and the left-right direction. For example,
When the mold is the transfer molding mold 120 and the pot 125 is provided on the upper surface of the mold 120, the mold is moved and adjusted to a position where the pot 125 matches the plunger 126. If the die is a lower die for a press, it is moved and adjusted to a position that matches the upper die. As described above, the mold 120 is placed on the upper surface of the platen 101.
Are adjusted to move in the front-back and left-right directions, each holding member 140 is advanced toward the base plate 121 of the mold 120, and these holding members 140 are tightened by the tightening bolts 143, so that the upper surface of the surface plate 101 is Mold 1
Generally, 20 is fixed on the base plate 121.

[0003]

The surface plate 101
The operation of moving and adjusting the mold 120 in the front-rear direction and the left-right direction with respect to the upper surface is troublesome and requires much labor and time. Further, after moving and adjusting the mold 120 in the front-back and left-right directions, it is also troublesome to fix the mold 120 on the base plate 121 by tightening the presser fitting 140 with the tightening bolt 143, which requires a lot of trouble and time. Needed. SUMMARY OF THE INVENTION An object of the present invention is to provide a mold attaching / detaching and tightening device capable of easily attaching / detaching a mold to / from a surface plate and accurately positioning and fixing the mold at a predetermined position. It is to provide.

[0004]

According to a first aspect of the present invention, there is provided a mold attaching / detaching / clamping apparatus for detachably positioning a mold on a base plate of the surface plate. And a positioning key and a key groove between the surface plate and the base plate, the base plate being slidable in the front-rear direction and positioning in the left-right direction. And a stopper member is provided near the back side of the upper surface of the surface plate to abut on a back end of the base plate to perform positioning of the base plate in the front-rear direction.
On the right and left sides of the base plate, pressed surfaces inclined upward are formed, and a pair of pressing members each having a pressing surface corresponding to the pressed surfaces are arranged,
The platen is provided with fastening means for fixing the base plate to the platen by advancing the pair of pressing members and pressing the pressing surfaces thereof against the pressed surface of the base plate. Features.

Therefore, when the mold is fixed to the upper surface of the base plate with the base plate, the base plate slides from the near side to the deep side of the upper surface of the base plate while the positioning key and the key groove are fitted. Being done
The base plate is positioned in the left-right direction with respect to the surface plate by the fitting action between the positioning key and the key groove. The base plate is positioned in the front-rear direction by being pushed to a position where the rear end of the base plate comes into contact with the stopper member. Here, the pair of pressing members are moved forward by the tightening means, and the pressing surfaces of the pressing members press the right and left pressed surfaces of the base plate. Securely fixed without fixing failure. When removing the mold from the surface plate, the mold can be easily removed by operating in the reverse procedure.

According to a second aspect of the present invention, there is provided a die attaching / detaching / clamping device according to the first aspect of the present invention, wherein the tightening means is rotated by an operation lever and pressed. It is characterized in that it is constituted by a cam mechanism provided with a cam body which pushes the back side of the member to advance the member.
Therefore, when the mold is fixed to or released from the upper surface of the surface plate on the base plate, the operation can be quickly and reliably performed by an extremely simple operation of rotating the operation lever in a predetermined direction.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 1 and FIG.
The die removing and fastening device for detachably positioning and fixing the die 20 on the base plate 21 integrally provided on the lower surface thereof with respect to the upper surface of the die includes a stopper member 7, a positioning key 11, A member 40 and a fastening means 50 are provided. A key embedding groove 10 that is long in the front-rear direction is recessed at a substantially central portion of the upper surface of the surface plate 1, and a positioning key 11 composed of a parallel key is fixed to the key embedding groove 10 by press fitting. On the other hand, at the center of the lower surface of the base plate 21 provided integrally with the lower surface of the mold 20, a key groove 22 slidably fitted along the positioning key 11 is formed. The base plate 21 is slidable in the front-rear direction and positioned in the left-right direction with respect to the surface plate 1 by the fitting action of the positioning key 11 and the key groove 22.

[0010] A stopper member 7 is provided on the upper surface of the surface plate 1 near the back side (upper side in FIG. 1) to abut the back end surface of the base plate 21 to position the base plate 21 in the front-rear direction. . In this embodiment,
A stopper support member 2 is attached to a rear end surface of the base plate 21 by a fixing bolt 3, and the stopper member 7 is moved in the front-rear direction with respect to the stopper support member 2 by left and right pulling bolts 4 and pressing bolts 5. It is supported so that the movement can be adjusted. The pulling bolt 4 is rotatably supported by the stopper support member 2,
The screw portion is screwed into the stopper member 7. The pressing bolt 5 is screwed into the stopper supporting member 2 so as to be able to advance and retreat. Further, the pressing bolt 5 is locked to the stopper supporting member 2 by the lock nut 6 at a position where the tip thereof comes into contact with the back surface of the stopper member 7. Then, the stopper support member 2 is moved and adjusted in the front-rear direction by the pulling bolt 4 and the pressing bolt 5 in accordance with the depth dimension of the base plate 21 of the various types of molds 20, so that various differences with respect to the surface plate 1. The base plate 21 of the mold 20 is accurately positioned in the front-rear direction.

As shown in FIG. 2, pressing surfaces 23 are formed on the left and right sides of the base plate 21 of the mold 20 so as to be inclined upward. On the other hand, on the upper surface of the base 1, a pair of pressing attachment members 30 are attached to the left and right sides of the base plate 21 by fixing bolts 34. The presser mounting member 30 includes a support leg 31 that is mounted in contact with the upper surface of the surface plate 1, and a support leg 31.
And an overhanging portion 32 projecting inward from the upper end of the body.

A storage surface 33 surrounded by the inner surface of the support leg 31 and the lower surface of the overhang portion 32 and the upper surface of the platen 1 of the holding member 30 has a pressing surface corresponding to the pressed surface 23 of the base plate 21. A pair of pressing members 40 having 41 are respectively assembled so as to be able to advance and retreat. The holding member 40 includes:
The two support bolts 3 before and after the support leg 31 of the holding attachment member 30 and screwed into the back surface of the holding member 40
5 and a return spring 37 composed of a compression coil spring interposed between a double nut 36 screwed into one end of the support bolt 35 and a support leg 31 of the presser mounting member 30. Has been bombed.

On the back side of the pair of pressing members 40, the pressing members 40 are advanced against the elastic force of the return spring 37, and the pressing surface 41 is pressed against the pressed surface 23 of the base plate 21. , The mold 20 with respect to the surface plate 1,
Fastening means 50 fixed on the base plate 21
Are arranged. The tightening means 50 is constituted by a cam mechanism 51 having a cam shaft holder 60, a cam body 71, an operation lever 73 and the like.

As shown in FIGS. 2 to 4, the camshaft holder 60 has a vertical shaft hole formed at the center thereof.
An upper flange 61 and a lower flange 62 are formed in the upper and lower parts, respectively. Then, the camshaft holder 60
Are inserted into slide grooves 57 formed in notches on the left and right sides of the base plate 1 so as to be movable only in the left and right directions, and are adjusted to move in the left and right directions based on the rotation operation of the position adjustment bolts 53. It has become. That is, as shown in FIG. 1, a cam adjusting mounting plate 52 is attached to both side surfaces of the surface plate 1 so as to straddle a slide groove 57, and a position adjusting bolt 53 can move forward and backward on the cam adjusting mounting plate 52. Screwed. As shown in FIGS. 2 and 4, the tip shaft 54 of the position adjusting bolt 53 is inserted into a cam shaft holder 60, and an annular groove 55 formed on the outer peripheral surface of the tip shaft 54.
When the engagement pin 56 is engaged, the position adjustment bolt 53 and the cam shaft holder 60 are relatively rotatably connected. When the position adjusting bolt 53 is rotated and moved forward and backward with respect to the cam adjusting mounting plate 52, the cam shaft holder 60 is moved and adjusted in the left-right direction.

As shown in FIGS. 3 and 4, in order to firmly fix the cam shaft holder 60 at a required adjustment position and prevent accidental movement of the cam shaft holder 60, as shown in FIGS. Reference numeral 60 denotes a lower flange 62 movably fastened to the lower surface of the base 1 via a fastening bolt 64 and a long hole 63 in the left-right direction.

As shown in FIG. 2, the camshaft holder 6
A camshaft 70 is rotatably inserted into the 0 shaft hole, and the pressing member 40 is returned to the upper end of the camshaft 70 while pressing the back side of the pressing member 40, and the elastic force of the spring 37. A cam body 71 is provided integrally and eccentrically with the center of the cam shaft 70. At the lower end of the cam shaft 70, a lever mounting shaft 72 is projected, and the lever mounting shaft 72 is provided.
An operation lever 73 is attached to the boss portion 74 so as to transmit torque.

That is, in this embodiment, the movement of the camshaft holder 60 is adjusted according to the width of the base plate 21 of the various molds 20. When the operation lever 73 is rotated from the release position shown by the two-dot chain line in FIG. 1 to the fixed position shown by the broken line, the pressing member 40 is returned by the cam body 71 that rotates integrally with the operation lever 73. The push plate 40 is reliably advanced to a required position against the resilience of 37, and the base member 21 of the mold 20 is securely fixed to the upper surface of the base 1 by the holding member 40 without a fixing failure. I have. The operation lever 73 at the fixed position does not protrude outward from both left and right sides of the surface plate 1.

The mold attaching / detaching and tightening device of this embodiment is configured as described above. Therefore, when the mold 20 is fixed to the upper surface of the surface plate 1 by the base plate 21, first, the left and right operation levers 73 are respectively rotated to the release positions indicated by the two-dot chain lines in FIG. Then
As shown in FIG. 5, the pressing member 40 is retracted to a predetermined position by the elastic force of the return spring 37. Under the above-mentioned state, the base plate 21 is moved from the near side to the back side of the upper surface of the base 1 while the key groove 22 of the base plate 21 of the mold 20 is fitted to the positioning key 11 of the base 1.
By sliding, the base plate 21 is positioned in the left-right direction with respect to the surface plate 1 by the fitting action between the positioning key 11 and the key groove 22.

The base plate 21 is positioned in the front-rear direction by pushing the inner end of the base plate 21 to a position where it comes into contact with the stopper member 7. For example, as shown in FIG. 2, the mold is a transfer molding mold 20, and a pot 2 is provided on an upper surface of the mold 20.
When the mold 5 is provided, the mold 20 is positioned in the front-rear direction and the left-right direction at a position where the pot 25 exactly matches the plunger 26. If the die is a lower die for a press, it is positioned at a position that exactly matches the upper die.

Here, each of the left and right operation levers 73 is arranged as shown in FIG.
By rotating from the release position shown by the two-dot chain line to the fixed position shown by the broken line, each of the cam shafts 70 and the cam bodies 71 are rotated integrally with these operation levers 73.
The back surface of the pressing member 40 is pressed by the outer peripheral surface of the cam body 71 based on the rotation of the cam body 71, whereby the pair of left and right pressing members 40 is required against the elastic force of the return spring 37. To a position where it does. Then, the right and left pressed surfaces 23 of the base plate 21 are pressed by the respective pressing surfaces 41 of the pair of pressing members 40, so that the mold 20 is securely fixed to the upper surface of the base plate 1 without fixing failure on the base plate 21. Fixed to

When the mold 20 is removed from the surface plate 1, the mold 20 can be easily removed by operating in the reverse procedure. Accordingly, the mold 20 can be easily and detachably mounted on the base plate 21 with respect to the base plate 1, and can be accurately positioned without being displaced from the base plate 1 and securely fixed. .

In the above embodiment, the platen 1
On the other hand, the case where the stopper member 7 and the camshaft holder 60 are arranged so as to be able to move and adjust respectively has been illustrated,
It is not limited to this. For example, a mold 20 having a base plate 21 having a constant depth dimension and width dimension.
In the case of targeting only the surface plate 1, the stopper member 7 and the camshaft holder 60 may be provided integrally with the surface plate 1, respectively. Further, in the above embodiment, the case where the fastening means 50 is constituted by the cam mechanism 51 is exemplified, but the invention is not limited to this. For example, the fastening means 50 can be constituted by a hydraulic cylinder.

[0021]

As described above, according to the present invention,
The mold can be easily attached to and detached from the surface plate,
It can be accurately positioned and fixed at a predetermined position.

[Brief description of the drawings]

FIG. 1 is a plan view showing an apparatus for attaching and detaching a mold according to an embodiment of the present invention.

FIG. 2 is a sectional view based on the line II-II in FIG.

FIG. 3 is a sectional view based on the line III-III of FIG. 2;

FIG. 4 is a sectional view based on the line IV-IV of FIG. 2;

FIG. 5 is a cross-sectional view showing a released state in which a pressing member is retracted with respect to a pressed surface of a base plate of the mold.

FIG. 6 is an explanatory view showing a conventional die attaching / detaching tightening device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Surface plate 7 Stopper member 11 Positioning key 20 Die 21 Base plate 22 Key groove 23 Pressed surface 40 Pressing member 41 Pressing surface 50 Tightening means 51 Cam mechanism 71 Cam body 73 Operating lever

Claims (2)

[Claims] 1. A die-mounting / clamping device for removably positioning and fixing a die on a base plate thereof on an upper surface of a platen, and fixing the die to the base plate. A positioning key and a key groove for positioning the base plate so as to be slidable in the front-rear direction and in the left-right direction are provided, respectively. A stopper member for positioning the base plate in the front-rear direction is provided.On both left and right sides of the base plate, pressed surfaces inclined upward are formed, and pressed surfaces corresponding to the pressed surfaces are respectively formed. A pair of holding members are provided, and the platen is configured to advance the pair of holding members and press a pressing surface thereof against a pressed surface of the base plate. It is, mold with detachable clamping unit clamping means is characterized in that it is arranged to secure said base plate to said platen. 2. The apparatus according to claim 1, wherein said fastening means is provided with a cam body which is rotated by an operation lever and has a cam body for pushing a back side of said holding member to advance. A mold attaching / detaching tightening device characterized by comprising: