JP2001030009A - Shape clamping device for stretcher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the distortion of a non-clamping part due to the crush deformation of a clamping part by clamping both side outer faces of the transfer direction of an extruded shape having a rugged shaped rear outer face. SOLUTION: A clamping mechanism 32 to clamp upper/rear outer faces of an extruded shape A is attached to a truck 23, a pressing mechanism 40 provided with first/ second pressing pieces 54, 55 to press hold both side outer faces of the transfer direction of the extruded shape A is vertically movably and rotatably attached to the truck 23. By this method, angles for the vertical of the holding faces of the first/second pressing pieces 54, 55 are arbitrarily changed, thus, both side outer faces of the transfer direction of the extruded shape A having a rugged shaped rear outer face is pressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold gripping device for a stretcher that corrects bending and the like by pulling an extruded material extruded by an extruder such as an aluminum extruded material.

[0002]

2. Description of the Related Art As a stretcher for an extruded material, a pair of movable carts provided with a material holding device are opposed to each other, and both ends in the longitudinal direction of the extruded extruded material are gripped by each material holding device. 2. Description of the Related Art There is known a device that moves a movable cart and pulls an extruded material to correct a bending or the like.

When straightening an extruded material by such a stretcher, a straightening force of several tons or more is transmitted to the extruded material, and the gripping force at both ends in the longitudinal direction of the extruded material is extremely large. Both ends of the extruded material are crushed and deformed, and the non-grip portion of the extruded material is twisted due to the crushing deformation, and the crushed deformation propagates from both ends of the extruded material toward the center, and is cut off without being used as a product. The length of the part becomes longer, and the product yield becomes worse.

[0004] As a stretcher mold gripping device which solves this problem, there is known, for example, one disclosed in Japanese Patent Application Laid-Open No. 7-171620. FIG.
It will be described based on. A plurality of upper holding pieces 3 are provided on the upper portion of the frame 2 of the carriage 1 by an upper holding cylinder 4 so as to be vertically movable, and a lower holding piece 6 is provided below the frame 2 by a lower holding cylinder 5 so as to be vertically movable. A stopper 7 and a pushing piece 8 are provided on the frame 2 so as to be movable in the vertical and lateral directions, respectively, and a concave portion on the upper and lower outer surfaces of the extruded material A is gripped by the upper and lower holding pieces 3 and 6, and the left and right outer surfaces of the extruded material A Is held by the stopper 7 and the pressing piece 8.

According to the above-described mold gripping device, the stopper 7 and the pushing piece 8 grip the outer surfaces of both sides of the extruded mold A in the conveying direction, and the upper holding piece 3 and the lower holding piece 6 hold the upper and lower outer faces of the extruded mold A. Therefore, the stopper 7 and the pressing piece 8 can prevent the non-grip portion from being twisted by the crushing deformation of the grip portion of the extruded mold material A. Therefore, the length of the portion that cannot be used as a product and is cut off is shortened, and the product yield is improved.

[0006]

In the above-described mold material gripping device, the lower holding piece 6 moves up and down with respect to the frame 2 and the stopper 7 and the pushing piece 8 move laterally with respect to the frame 2. The gripping surface 7a of the stopper 7, the gripping surface 8a of the pressing piece 8 and the upper surface 6a of the lower holding piece 6 are always at a constant angle. For this reason, if the lower outer surface of the extruded die A is flat, the extruded die A is placed on the upper surface 6a of the lower holding piece 6 in a horizontal posture, and the stopper 7 and the pushing piece 8 are used to move the extruded die A in both sides in the transport direction as described above. The outer surface can be uniformly gripped, but if the lower outer surface of the extruded mold material A is uneven, the upper surface 6a of the lower holding piece 6
Since the outer surfaces of both sides of the extruded mold material A in the conveying direction are inclined with respect to the horizontal when placed on the
As a result, the outer surfaces of both sides of the extrusion material A in the transport direction may not be uniformly gripped.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stretcher mold gripping device which can solve the above-mentioned problems.

[0008]

According to the present invention, two molding material gripping devices having a gripping mechanism 32 mounted on a carriage 23 are disposed opposite to each other, and each of the gripping mechanisms 32 is provided at both ends in the longitudinal direction of the extruded die A. In a stretcher that grips the upper and lower outer surfaces and moves at least one of the carts 23 to stretch the extruded mold A in the longitudinal direction to correct bending or the like, the extruded mold A is positioned closer to the front than the gripping mechanism 32 of the cart 23. The pressing mechanism 40 provided with a first pressing piece 54 for pressing the outer surface on one side in the conveying direction and a second pressing piece 55 for pressing the outer surface on the other side in the conveying direction of the extruded mold material A is movable vertically and around the horizontal axis. A stretcher-shaped member holding device, which is rotatably mounted.

[0009]

According to the present invention, the extruded material A is held by the gripping mechanism 32.
The upper and lower outer surfaces are gripped, and the outer surfaces on both sides in the transport direction of the extruded material A are pressed by the first and second pressing pieces 54 and 55, so that the non-holding portion is twisted by the crushing deformation of the holding portion of the pressing material A. -It can be suppressed by the second pressing pieces 54 and 55. Therefore, the length of the cut-out portion of the extruded die can be shortened, and the product yield is improved.

Further, by rotating the holding mechanism 40 about a horizontal axis, the holding surfaces 54a, 5a of the first and second holding pieces 54, 55 are formed.
The angle of 5a with respect to the vertical can be changed. Accordingly, even when the lower outer surface of the extruded mold material A is uneven and the outer surfaces on both sides in the transport direction are inclined with respect to the vertical when gripped by the gripping mechanism 32, the extruded mold material A is held by the first and second pressing pieces 54 and 55. The outer surfaces on both sides in the transport direction can be held down.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the overall structure of an extruder for extruding a die will be described. As shown in FIG. 1, the mold material extruded by the extruder 10 moves on a run-out table 12 composed of a plurality of drive rollers while being pulled by a puller 11, and is moved closer to the extruder 10 by a platen cutter 13 which moves simultaneously with the extruded mold material. Extrusion material A is cut at the position. The extruded material A is conveyed onto a cooling table 14 by a belt conveyor (not shown) and cooled, and subsequently conveyed to a stretcher B along a stretcher table 15.

[0012] Both ends of the extruded material A conveyed to the stretcher B have a movable side material gripping device 17 which moves along the rail 16 according to the length of the extruded material conveyed, and the rail 16 when the extruded material is pulled. The movable mold material holding device 17 is fixed, the movable mold material gripping device 17 is fixed, the fixed mold material gripping device 18 is moved, and the extruded mold material A is pulled in the longitudinal direction to correct the bending and the like. It is conveyed to the saw table 19 and cut by the fixed-size cutting machine 20 into a predetermined length.

Next, details of the fixed-side mold material holding device 18 will be described. The movable mold holding device 17 is the same as the fixed mold holding device 18. As shown in FIG.
Is a shape in which a first rail member 21 and a second rail member 22 having a U-shaped cross section are arranged in parallel at an interval in the extrusion material conveying direction (the direction of arrow a). Fixed side material holding device 18
Has a carriage 23 that moves along the first rail member 21 and the second rail member 22. The carriage 23 has a substantially U-shape consisting of an upper horizontal portion 24, a vertical portion 25, and a lower horizontal portion 26. Flanged wheels 27 are attached to both sides of the lower horizontal portion 26, respectively. The wheels 27 are in contact with the upper surface of the first rail member 21 and the upper surface of the second rail member 22.
A bracket 28 is fixed over the first rail member 21 and the second rail member 22. A moving cylinder 29 is mounted on the bracket 28, and a piston rod 29a thereof is connected to the carriage 23. by this,
The trolley 23 moves along the first and second rail members 21 and 22 by expanding and contracting the piston rod 29 a of the moving cylinder 29.

An upper holding member 30 is attached to an upper lateral portion 24 of the carriage 23, and a lower holding member 3 is attached to a lower lateral portion 26.
The upper holding member 30 and the lower holding member 31 form a gripping mechanism 32. The upper holding member 30 includes a plurality of holding pieces 33, each holding piece 33 has an arc-shaped holding surface 33a, and the shaft 34 is arranged so that the holding surface 33a faces the direction of movement of the bogie as shown in FIG. It is mounted so that it can swing up and down. Piston rod 3 of clamping cylinder 35 supported on upper horizontal portion 24 to be able to swing up and down
5a is connected to the upper part of the holding piece 33, and when the piston rod 35a expands and contracts, the holding piece 33 swings up and down. The lower holding member 31 has a flat plate shape, and its holding surface 31a is substantially horizontal.

The front surface 26a of the lower lateral portion 26 of the carriage 23
A pressing mechanism 40 that presses the outer surfaces of both sides of the extruded mold material A in the transport direction is mounted on (the surface facing the movable mold material holding device 17) so as to be vertically movable and rotatable about a horizontal axis. The holding mechanism 40 is located at a position forward of the holding mechanism 32 of the carriage 23. As shown in FIG. 2 and FIG.
6, a vertical plate 41 is fixed to the front surface 26a.
1 has a pair of vertical guide rails 42. A pair of vertical guides 44 provided on the mounting plate 43 are slidably fitted on the pair of vertical guide rails 42. The piston rod 45 of the vertical movement cylinder 45 attached to the vertical plate 41
a is connected to the mounting plate 43, and its piston rod 45a
The mounting plate 43 moves up and down by expanding and contracting.

A shaft 47 is rotatably supported in a hole 46 of the mounting plate 43. The shaft 47 is horizontal and extends in the longitudinal direction of the extrusion A. A pinion 48 is mounted on a portion of the shaft 47 protruding from the front surface 43a of the mounting plate 43. This pinion 48 may be attached with bolts or the like,
It may be attached integrally. A rack 50 is connected to a piston rod 49a of a rotation cylinder 49 mounted on the front surface of the mounting plate 43. The rack 50 meshes with the pinion 48, and the shaft 47 rotates by extending and retracting the piston rod 49a.

A portion of the pinion 48 in the circumferential direction is a flat surface, and the substrate 51 is fixed to the flat surface. A first holding cylinder 52 and a second holding cylinder 53 are attached to the substrate 51 so as to face each other. A first holding piece 54 is fixed to a piston rod 52a of the first holding cylinder 52, and a second holding cylinder is provided. 53 piston rod 53a
, A second pressing piece 55 is fixed. Thus, the above-described holding mechanism 40 is formed.

Next, the operation will be described. The holding piece 33 is swung upward as shown by the dashed line in FIG.
Separated from The piston rod 45a of the vertical movement cylinder 45 is contracted to move the mounting plate 43 downward, and the holding mechanism 40 (first and second holding pieces 54, 55) is moved in the extrusion material conveying direction line (stretcher in FIG. 1). (Upper surface of the table 15).

The extruded material A is transported to the carriage 23, and the lower outer surface of the extruded material A is placed on the upper surface of the lower holding member 31. The plurality of holding pieces 33 are pivoted downward, and their holding surfaces 33a are brought into contact with the upper and outer surfaces of the extrusion material A, and the extrusion material A is moved to the upper holding member 30 (the plurality of holding pieces 33) as shown in FIG. It is gripped by being held by the holding member 31.

The piston rod 45a of the vertical movement cylinder 45 is extended to operate and the holding mechanism 4 together with the mounting plate 43.
0, the first pressing piece 54 faces the outer surface B on one side in the conveying direction of the extruded die A, and the second pressing piece 55 moves the outer surface C on the other side in the conveying direction of the extruded die A as shown in FIG. Opposes. The piston rods 52a, 53a of the first and second holding cylinders 52, 53 are extended to operate, and the first and second holding pieces 54, 55 are pressed against the outer surfaces of both sides of the extruded mold material A in the conveying direction to be pressed.

The piston rod 2 of the moving cylinder 29
9a is contracted to move the carriage 23 along the rail 16 to pull the extruded material A to correct a bending or the like. At this time, since the outer surfaces on both sides in the transport direction of the extruded material A are pressed by the first and second pressing pieces 54 and 55, the first and second pressing pieces 54 and 55 prevent the gripping portion of the extruded material A from being twisted by the first and second holding members.
It can be suppressed by the second pressing pieces 54 and 55.

When the carriage 23 is moved in the direction of arrow b in the state shown in FIG. 5 and the extruded material A is pulled, the oscillating force in the direction of arrow c acts on each of the holding pieces 33 to hold the holding surface 33a of the holding piece 33.
Is strongly pressed against the upper surface of the extrusion material A. That is, a wedge effect occurs.

Accordingly, even when the force for bringing the holding surfaces 33a of the holding pieces 33 into contact with the upper surface of the extrusion material A is small, the holding member 33 can slide on the upper surface of the extrusion material A when the extrusion material A is pulled. In addition, the extruded material A can be firmly gripped, and the deformation of the extruded material A when the extruded material A is gripped by the holding pieces 33 is small.

As shown in FIG. 6, when the lower outer surface of the extruded mold material A is uneven and the outer surfaces B and C on both sides in the transport direction when placed on the upper surface 31a of the lower holding member 31, are inclined. , Piston rod 49a of rotating cylinder 49
To extend and retract to rotate the holding mechanism 40 together with the shaft 47, that is, around the horizontal axis. Accordingly, the pressing surfaces 54a, 55a of the first and second pressing pieces 54, 55 are inclined with respect to the vertical, and can be parallel to the outer surfaces B, C on both sides in the conveying direction of the extruded material A. In this state, the piston rods 52a, 53a of the first and second pressing cylinders 52, 53 are extended to operate, and the first and second pressing pieces 54, 55 are pressed against the outer surfaces B, C on both sides in the transport direction of the extrusion material A.

A second embodiment of the mechanism for rotating the holding mechanism 40 about a horizontal axis will be described. As shown in FIGS. 7 and 8, the housing 60 is mounted on the mounting plate 43. A bracket 61 and a pinion 62 are provided on the housing 60,
They are fixed to the shaft 63, and the shaft 63 is
To be rotatably supported. A rack 64 is slidably supported in the housing 60 in the longitudinal direction. The rack 64 and the pinion 62 are engaged. Pressing mechanism 4 on the bracket 61
The 0 substrate 51 is mounted. A rotation cylinder 65 is attached to the housing 60, and its piston rod 65 a is connected to the rack 64.

The piston rod 6 of the rotating cylinder 65
The rack 64 reciprocates by expanding and contracting 5a, and the pinion 62 and the bracket 61 rotate.
Rotates around the horizontal axis.

[0027]

According to the first aspect of the present invention, the upper and lower outer surfaces of the extrusion material A are gripped by the gripping mechanism 32, and the extrusion material A
The outer surfaces of both sides in the conveyance direction are pressed by the first and second pressing pieces 54 and 55, so that the first and second pressing pieces 54 and 55 can prevent the non-holding portion from being twisted due to the deformation of the holding portion of the pressing material A by crushing deformation. . Therefore, the length of the cut-out portion of the extruded die can be shortened, and the product yield is improved.

Further, by rotating the holding mechanism 40 about a horizontal axis, the holding surfaces 54a, 5a of the first and second holding pieces 54, 55 are formed.
The angle of 5a with respect to the vertical can be changed. Accordingly, even when the lower outer surface of the extruded mold material A is uneven and the outer surfaces on both sides in the transport direction are inclined with respect to the vertical when gripped by the gripping mechanism 32, the extruded mold material A is held by the first and second pressing pieces 54 and 55. The outer surfaces on both sides in the transport direction can be held down.

[Brief description of the drawings]

FIG. 1 is an overall schematic plan view of an extrusion apparatus.

FIG. 2 is a perspective view of a fixed-side mold member gripping device.

FIG. 3 is a front view of a gripping mechanism.

FIG. 4 is an exploded perspective view of a holding mechanism mounting portion.

FIG. 5 is an explanatory diagram of a gripping operation of a gripping mechanism.

FIG. 6 is an explanatory diagram of an extruded material pressing operation of the pressing mechanism.

FIG. 7 is a cross-sectional front view illustrating another example of a portion that rotates a holding mechanism.

8 is a sectional view taken along the line DD of FIG. 7;

FIG. 9 is an explanatory diagram of a conventional example.

[Explanation of symbols]

Reference Signs List 16 rail, 17 movable mold holding device, 18 fixed mold holding device, 23 cart, 29 moving cylinder, 30 upper holding member, 31 lower holding member, 32
Gripping mechanism, 33 holding piece, 40 pressing mechanism, 41 vertical plate, 43 mounting plate, 45 vertical movement cylinder, 47
... Shaft, 48 ... Pinion, 49 ... Cylinder for rotation, 50
... Rack, 51 ... Substrate, 52 ... First holding cylinder,
53 ... second presser cylinder, 54 ... first presser piece, 54
a: holding surface, 55: second holding piece, 55a: holding surface, 60
... housing, 61 ... bracket, 62 ... pinion, 6
3 ... shaft, 64 ... rack, 65 ... cylinder for rotation.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Masato Yasuda 130 Hanaya, Tateyama-cho, Nakashinkawa-gun, Toyama Prefecture (72) Inventor Kiyomitsu Matsushima 3178, Ogyu, Kurobe-shi, Toyama Prefecture (72) Inventor Kei Sakai Toyama, Toyama Prefecture 1244 Oshima, Oita City

Claims (1)

[Claims] 1. A two-member holding device having a holding mechanism 32 attached to a carriage 23 is disposed opposite to each other.
2 is a stretcher for gripping upper and lower outer surfaces at both ends in the longitudinal direction of the extruded mold material A and moving at least one of the carts 23 to stretch the extruded mold material A in the longitudinal direction to correct bending and the like. The pressing mechanism 40 provided with a first pressing piece 54 for pressing the outer surface on one side in the conveying direction of the extruded material A and a second pressing piece 55 for pressing the outer surface on the other side in the conveying direction of the extruded material A at a position closer to the front than in the vertical direction. A stretcher-shaped member gripping device, which is mounted so as to be freely movable and rotatable about a horizontal axis.