JP4239182B2 - Dice separator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a die separating apparatus capable of smoothly separating a male die and a female die for producing an extruded profile in the axial direction.
[0002]
[Prior art]
The front face of the extruder for producing the extruded profile is detachably equipped with a die W that matches the cross-sectional shape of the extruded profile (FIG. 6). However, FIG. 6B is a cross-sectional view corresponding to the line ZZ in FIG.
[0003]
The die W is configured by combining a male mold W1 and a female mold W2 in the axial direction. The female mold W2 is formed with a hole-shaped bearing portion W2a that matches the outer shape of the extruded profile in the axial direction. The male mold W1 is formed with a passage W1a, W1a,... Communicating with the bearing W2a, and a bearing W1b protruding in the bearing W2a in the axial direction. The gap d between the bearing portions W1b and W2a corresponds to the thickness of the extruded profile and is set to about 0.3 to 2.0 mm. Therefore, the die W supplies a material such as aluminum from the extruder to the bearing portion W2a via the passages W1a, W1a... (Predetermined by the arrow in FIG. 5A), and passes through the bearing portions W1b and W2a. It can be adjusted to a cross-sectional shape and discharged forward as an extruded profile.
[0004]
The die W needs to be removed from the extruder, and the male W1 and the female die W2 are separated for proper maintenance, and a separating device is used to separate the die W into the male die W1 and the female die W2. Sometimes.
[0005]
A conventional separation device is configured by combining a chuck unit installed upward on a lifting table and a pair of separation claws mounted so as to be able to appear and retract on left and right side frames of the lifting table. Therefore, in this case, the die W is gripped upward via the chuck unit, the boundary between the male mold W1 and the female mold W2 is aligned with the position of the separation claw via the lifting table, and the wedge part of the separation claw is moved to the male part. The die W can be separated in the axial direction by entering the boundary between the mold W1 and the female mold W2.
[0006]
[Problems to be solved by the invention]
When such a conventional technique is used, the dice are not necessarily uniform in the circumferential direction in the male and female molds, so that the separation distance between the male mold and the female mold by the respective separation claws is not uniform. There is a problem that one side is inclined with respect to the other and the two are not correctly separated in the axial direction and the bearing portion of the die may be damaged.
[0007]
Therefore, in view of the problems of the prior art, the object of the present invention is to mount the separation claw on the common moving base so that the dice can be correctly and smoothly separated in the axial direction without damaging the bearing portion of the dice. It is an object of the present invention to provide a dice separating apparatus that can be used.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the configuration of the present invention includes a pair of separation claws mounted opposite to each other on a common moving base, and a clamp unit for fixing a die between the separation claws. The gist is to separate the die in the axial direction by allowing the wedge portion to enter the boundary between the male and female dies.
[0009]
A sub-clamp unit that can move in the axial direction of the die can be disposed in front of the clamp unit, and the sub-clamp unit can apply an axial tensile force to the die held by the clamp unit. .
[0010]
Further, an elevating table that supports the die can be disposed between the clamp unit and the sub clamp unit.
[0011]
Furthermore, the separation claw can be positioned in the axial direction of the die via the moving base.
[0012]
Each separation claw may be combined with a sensor that detects a drive stroke.
[0013]
[Action]
According to the configuration of the invention, the separation claw can separate the dice correctly in the axial direction by causing the wedge portion to enter the boundary between the male and female dies fixed by the clamp unit. In other words, each separation claw moves the moving base along the axial direction of the die by the component force generated by the slope of each wedge even if the male and female coupling strengths are uneven in the circumferential direction. In addition, a driving force can be applied to the male mold and the female mold to separate them both in the axial direction. In addition, a clamp unit shall hold | grip one of the male type | mold of a dice | dies and a female type | mold, and shall fix a dice | dies.
[0014]
If a secondary clamp unit is arranged in front of the clamp unit, the secondary clamp unit holds both the male and female dies together with the clamp unit, and the male and female dies after the separation may fall inadvertently. There is no risk of damage.
[0015]
The sub-clamp unit supplements the driving force by the separation claw when separating the die by applying a tensile force in the axial direction of the die, and the male mold or female mold being gripped by the sub-clamp unit is replaced with the die mold. It can be correctly pulled apart in the axial direction.
[0016]
The lifting table placed between the clamp unit and sub-clamp unit supports the die at a predetermined position between the clamp unit and sub-clamp unit, making it easy to work when holding the die on the clamp unit and sub-clamp unit. Can be. The lifting table is lifted when the die is held by the clamp unit and the sub-clamp unit and released, and lowered when the die is separated by the separation claw. Moreover, it is preferable that the lifting table is divided into two parts corresponding to each of the male type and the female type and can be raised and lowered individually. This is because the separated male mold and female mold can be individually carried out.
[0017]
If the separation claw is positioned in the axial direction of the die via the moving base, the separation claw can be easily aligned with the boundary between the male and female dies.
[0018]
If each separation claw is combined with a sensor that detects the respective drive stroke, that is, the depth of entry of each wedge portion into the boundary between the male and female molds, each separation claw can, for example, drive both strokes. By detecting the sum of the two and limiting the maximum stroke, there is no possibility that the depth of entry of the wedge will be excessive, and it is possible to effectively prevent damage to the die, the clamp unit holding the die, the sub clamp unit, etc. Can do.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
The dice separating apparatus mainly includes a pair of separating claws 21 and 21 mounted opposite to a common moving base 25 and a clamp unit 31 that fixes the dice W between the separating claws 21 and 21 ( FIG. 1, FIG. 2). However, the movable base 25 and the clamp unit 31 are mounted on the common base frame 10, and the sub-clamp unit 36 is mounted on the base frame 10, and the lifting tables 41 and 41 are incorporated.
[0021]
The moving base 25 is formed in a horseshoe shape, and is installed on the base frame 10 so as to be movable back and forth via sliders 25a, 25a... And guide rails 11 and 11. In addition, each slider 25a is attached to the lower surface of the movement base 25 via the leg part 25b. Further, an operation handle 25e is attached to the moving base 25 via a bearing 25g (FIGS. 1 and 3), and a pinion 25h that meshes with the rack 12 on the base frame 10 is attached to the shaft end of the operation handle 25e. Is installed. Therefore, the moving base 25 can be moved back and forth along the guide rails 11 and 11 via the operation handle 25e.
[0022]
The separation claws 21 and 21 are respectively assembled inward at the distal end portion of the moving base 25 via the slide rod 21c (FIGS. 1 and 4). Each separation claw 21 is a block body in which a wedge portion 21a having a mountain-shaped cross section is formed on the tip surface in the vertical direction, and is detachably attached to the tip of the slide rod 21c via a socket 21d. That is, the separation claw 21 is inserted from the top to the bottom with respect to the socket 21d via the guide grooves 21b, 21b on both sides, and can move somewhat in the socket 21d via a ball plunger (not shown). It is lightly retained. Further, the wedge portion 21a is formed by appropriately bending the ridgeline so as to conform to the outer shape of the die W.
[0023]
The slide rod 21c penetrates the distal end portion of the moving base 25 to the left and right via the slide bearing 21c1. In addition, the rear end of the slide rod 21c is connected to the cylinder 22, and the cylinder 22 is mounted on the moving base 25 sideways via the spacer 22a. The moving base 25 is assembled with sensors 23 and 23 for detecting the amount of movement of each slide rod 21c in the axial direction, that is, the driving stroke of each separation claw 21. However, the cylinders 22 and 22 are connected to a common hydraulic pressure source (not shown). Therefore, the separation claws 21 and 21 can be advanced all at once toward the dice W by driving the slide rod 21c inward through the cylinder 22 respectively.
[0024]
The clamp unit 31 is installed forward through a bracket 32 on the base frame 10 (FIGS. 1 and 2). The clamp unit 31 has chuck claws 31a, 31a,... Having a stepped cross section, and is connected to a short stroke cylinder 33 via a connecting rod 33a. The connecting rod 33a is pin-connected to the rod of the cylinder 33 and penetrates the moving base 25 and the bracket 32 in the front-rear direction. The cylinder 33 is mounted on the rear portion of the base frame 10 via a bracket 33c. The clamp unit 31 opens and closes the chuck claws 31a, 31a... Via the cylinder 33 and the connecting rod 33a, and closes the chuck claws 31a, 31a. Can be fixed to.
[0025]
The sub clamp unit 36 is disposed in front of the clamp unit 31 so as to face the clamp unit 31. The sub-clamp unit 36 has chuck claws 36a, 36a... Similar to the clamp unit 31, and is fixed to the front end of the moving base 37 via a spacer 36b and a bracket 37b. The moving base 37 is mounted on the base frame 10 through sliders 37a, 37a,... And guide rails 13 and 13 so as to be movable back and forth, and is connected to a cylinder 38 installed on the base frame 10 through a bracket 38d. ing. However, the rod 38a of the cylinder 38 is connected to a bracket 37b on the moving base 37 via a coupling 38b.
[0026]
The sub clamp unit 36 is connected to a short stroke cylinder 39 through a connecting rod 39a. The cylinder 39 is attached to the bracket 37b via a spacer 39c, and the connecting rod 39a is pin-connected to the rod of the cylinder 39 and penetrates the spacer 36b, the bracket 37b, and the spacer 39c. The auxiliary clamp unit 36 can open and close the chuck claws 36a, 36a... Via the cylinder 39 and the connecting rod 39a, and can hold the other end side of the die W holding one end side by the clamp unit 31. The sub clamp unit 36 can be moved back and forth via the cylinder 38 and the moving base 37.
[0027]
The elevating tables 41 and 41 are disposed upward between the clamp unit 31 and the sub clamp unit 36. The elevating tables 41 and 41 are arranged side by side so as to correspond to the male mold W1 and female mold W2 of the die W held by the clamp unit 31 and the sub-clamp unit 36, and the male mold W1 and female mold W2 are arranged. In order to support it stably, spacers 41a and 41a having appropriate shapes are detachably attached to the upper surface. The elevating tables 41 and 41 can be raised and lowered via cylinders 42 incorporated in the storage portion 14 of the base frame 10, respectively, and the cylinders 42 and 42 are mounted upward on a common bracket 42a.
[0028]
The die W in which the male mold W1 and the female mold W2 are integrally coupled is placed on the lifting tables 41 and 41 via appropriate spacers 41a and 41a, and the lifting tables 41 and 41 are lifted to move the front surface of the clamp unit 31. To close the chuck claws 31a, 31a... Of the clamp unit 31 so as to grip the female mold W2, and close the chuck claws 36a, 36a. And hold the male mold W1. Thereafter, the elevating tables 41 and 41 are lowered and the moving base 25 is moved back and forth via the operation handle 25e, and the tips of the wedge portions 21a and 21a of the separation claws 21 and 21 are connected to the male die W1 and female die of the die W. Positioning is performed so as to correspond to the groove Wa at the boundary of W2 (solid line in FIGS. 1 and 5A).
[0029]
Therefore, the separating claws 21, 21 each move the wedge part 21 a into the groove Wa via the cylinder 22 (in the direction of the arrow K 1 in FIG. It can be separated in the axial direction of the dice W ((B) in the figure). At this time, since the separation claws 21 and 21 can be moved back and forth via the common moving base 25, the moving base 25 is moved by the component force generated via the slope 21a1 on the female W2 side of each wedge 21a. While moving toward the male mold W1 (in the direction of arrow K2 in FIG. 5B), both wedge portions 21a and 21a are made to enter deeply into the groove Wa, and the male mold W1 is passed through the other inclined surface 21a2 of each wedge section 21a. Is driven in the axial direction. That is, the separation claws 21, 21 advance the moving base 25 in the direction of the arrow K2 when one wedge portion 21a enters the groove Wa, thereby causing the male mold W1 to move in the axial direction via the other wedge portion 21a. By driving, the male mold W1 and the female mold W2 can be correctly separated in the axial direction of the die W.
[0030]
The sub-clamp unit 36 operates the cylinder 38 in the shortening direction to apply a tensile force to the male die W1 when separating the dice W through the separation claws 21 and 21 in this way, thereby providing the dice W Can be separated more smoothly. The sensors 23 and 23 detect the driving strokes of the separation claws 21, respectively. For example, when the sum of the driving strokes of the separation claws 21 and 21 reaches a predetermined set value, the cylinders 22 and 22 are shortened all at once. Thus, the separation claws 21 can be retracted. In other words, the separation claws 21 and 21 can detect the sum of their drive strokes to limit the maximum stroke, and there is no possibility of applying excessive force to the die W, the clamp unit 31, the auxiliary clamp unit 36, and the like. . The separating claws 21 and 21 may limit the maximum stroke only by one of the larger driving strokes detected by the sensors 23 and 23.
[0031]
When the die W is separated into the male mold W1 and the female mold W2, the lifting tables 41 and 41 are raised, the chuck claws 31a, 31a,..., 36a, 36a are opened and the male mold W1 and the female mold W2 are moved up and down. And the elevating tables 41, 41 are lowered to carry out the male mold W1 and the female mold W2 to the outside. At this time, the elevating tables 41 and 41 can be lowered individually and the male mold W1 and the female mold W2 can be individually carried out.
[0032]
The die W is formed by forming the inclined guide portions Wa1 and Wa1 in the groove Wa at the boundary between the male mold W1 and the female mold W2 (FIG. 5A), thereby further positioning the separating claws 21 and 21 by the moving base 25. Can be simple. This is because each separation claw 21 can automatically be precisely positioned via the guide portions Wa1 and Wa1. In addition, the die W may be gripped on the male mold W1 side by the clamp unit 31 and the female mold W2 side by the sub clamp unit 36, contrary to FIGS.
[0033]
In the above description, one or both of the clamp unit 31 and the auxiliary clamp unit 36 may omit the cylinders 33 and 39 and manually open and close the chuck claws 31a, 31a,.
[0034]
【The invention's effect】
As described above, according to the present invention, the separation claw is a wedge portion by combining the separation claw mounted opposite to the common moving base and the clamp unit that fixes the die between the separation claws. Since the die can be properly separated in the axial direction by entering the boundary between the male and female dies, the die can be smoothly separated without damaging the bearing portion of the die. effective.
[Brief description of the drawings]
1 is an explanatory plan view of the overall configuration. FIG. 2 is a cross-sectional explanatory view corresponding to the line XX in FIG. 1. FIG. 3 is an enlarged view of the main part corresponding to the arrow Y in FIG. Enlarged perspective view [Fig. 5] Operation explanatory diagram [Fig. 6] Cross-sectional explanatory diagram of the die [Explanation of symbols]
W ... Die W1 ... Male W2 ... Female 21 ... Separation claw 23 ... Sensor 25 ... Moving base 31 ... Clamp unit 36 ... Sub clamp unit 41 ... Lifting table

Claims (6)

A pair of separation claws mounted opposite to each other on a common moving base, and a clamp unit for fixing a die between the separation claws, wherein the separation claws have a wedge-shaped male and female die. A die separating apparatus for separating a die in an axial direction by entering the boundary of the die. 2. The die separating apparatus according to claim 1, wherein a sub-clamp unit movable in the axial direction of the die is disposed in front of the clamp unit. The die separating apparatus according to claim 2, wherein the sub-clamp unit applies an axial tensile force to a die held by the clamp unit. 4. The die separating apparatus according to claim 2, wherein an elevating table for supporting the die is disposed between the clamp unit and the sub clamp unit. The die separation device according to any one of claims 1 to 4, wherein the separation claw is positioned in the axial direction of the die via the moving base. 6. The die separating apparatus according to claim 1, wherein a sensor for detecting a driving stroke is combined with each separating claw.

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