JP2015020180A - Traction device for shape material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traction device for shape materials which can tow shape materials stably in the horizontal direction and control the traction speed and tension well, while contributing to the improvement of productivity.SOLUTION: A holding part 12 is included which holds the end portion Wa of a shape material W. A body 14 is included which supports the holding part 12 to move in a towing direction of the shape material W. Both an upper guide rail 16 which guides the upper portion of the body 14 in the towing direction and a lower guide rail 18 which guides the lower portion of the body 14 in the towing direction are included. Wheels 50 and 52 which roll the surface of the upper guide rail 16 and wheels 54, 56, and 58 which roll the surface of the lower guide rail 18 are provided in the body 14. Drive mechanisms 60, 62, and 64 are included which drive the body 14 along the upper and lower guide rails 16 and 18. A servo motor 60, as the driving source, is provided in the body 14, so as to control the towing speed thereby.

Description

  The present invention relates to a shape traction device for towing a shape which is a long material such as aluminum which is extruded through an extrusion die.

  Conventionally, as disclosed in Patent Document 1, a puller jaw that grips an end of a profile, a puller body that supports the puller jaw at its upper end, and a rail that guides the lower portion of the puller body in the pulling direction In addition, there is a traction device for an extruded material provided with a traction drive source that moves the puller body in the traction direction by chain driving. The traction device for extruded material is provided with a predetermined fluid cylinder and detection means, and a constant tension is always applied to the profile regardless of the fluctuation of the running resistance of the puller body, the magnitude, and the tension applied to the profile. The traction speed is automatically controlled so that it can be pulled and pulled.

  Further, as a structure for holding the tip portion of the shape member extruded from the extruder, there is an extrusion puller device disclosed in Patent Document 2. This device is provided with a jaw for receiving the lower surface of the end portion of the profile at the tip of the arm, and a claw for chucking the end of the profile received by the jaw in cooperation with the jaw. The rear end portion is pivotally supported, swings up and down around the pivotal support portion, and can adjust the height of the receiving surface of the jaw. This extrusion puller device adjusts the extrusion center height of the extrusion die to match the center height of the shape chucked by the jaws and claws. Occurrence of troubles in conveyance and stretching of the shape material in the rear equipment can be prevented, and the cross-sectional shape of the shape material can be stabilized.

  In addition, as disclosed in Patent Document 3, as a structure of a pulling device for pulling a shape member, a rack and pininon provided at the front in the extrusion direction by chucking the tip of the shape member extruded from the extrusion device There is also a device that pulls the profile by the mechanism. In this traction device, the rack and pinion mechanism is a simple device positioned forward in the center direction of the extruded shape member, and pulls the shape member at the center in the longitudinal direction.

Japanese Patent Laid-Open No. 4-111919 Japanese Patent Laid-Open No. 7-80541 JP 2006-289470 A

  In the case of the extruded material pulling device of Patent Document 1, when pulling the profile, the puller jaw attached to the upper portion of the puller body is tensioned on the extruder side. On the other hand, the puller body is pulled in the pulling direction by a chain attached to the lower portion of the puller body along a rail provided in the lower portion thereof. Therefore, a moment that tilts back and forth in the pulling direction acts on the puller body. As a result, the wheel provided only in the lower part of the puller body has a large running resistance, the load is likely to fluctuate, and the running becomes unstable, requiring a large driving force. Furthermore, pulling of the puller body is performed by a drive source such as a motor via a chain, so that the drive mechanism is complicated and energy loss is large, and fine drive control cannot be performed. For this reason, it is necessary to perform complicated tension control by attaching a predetermined fluid cylinder and detection means, and the structure of the entire apparatus is also complicated. In addition, the speed at which the puller body returns on the rail for the next towing after towing the shape member is also lacking in speed and hinders the improvement of production efficiency.

  The puller device for extrusion disclosed in Patent Document 2 discloses the structure of the chuck portion at the front end of the profile, and does not disclose the traction drive device. Further, since the height of the receiving surface of the jaw is changed by the swinging of the arm, the inclination of the receiving surface is changed, and the surface holding the end of the profile does not coincide with the horizontal direction as the pulling direction. In addition, there is a problem that the grip strength by the nail tends to be unstable.

  In the case of the rack and pinion mechanism of the traction device disclosed in Patent Document 3, the rack and pinion mechanism is provided at the center in the extrusion direction of the shape member. Due to the large size, there is a problem that it is difficult to adopt a configuration in which a driving mechanism for traction is arranged at the center of the shape member.

  The present invention has been made in view of the above-described background art, and is capable of stably pulling a shape member in a horizontal direction, favorably controlling a pulling speed and tension, and contributing to improvement in productivity. An object of the present invention is to provide a material traction device.

  The present invention relates to a profile traction device for towing a profile that has passed through an extrusion die, a gripping portion that grips an end of the profile, and a support that supports the gripping portion of the profile. A shape member comprising: a main body portion that moves in the pulling direction; an upper guide rail that guides the upper portion of the main body portion in the pulling direction; and a lower guide rail that guides the lower portion of the main body portion in the pulling direction. Traction device.

  The main body portion includes an upper wheel that rolls the surface of the upper guide rail in the pulling direction, a lower wheel that rolls the surface of the lower guide rail in the pulling direction, and the main body portion as the upper and lower guide rails. And a drive source for the drive mechanism is a servo motor provided in the main body, and the traction speed of the profile is controlled by the servo motor. . The gripping part is supported by the main body part via a position adjusting mechanism, and is provided so that the height position relative to the main body part can be adjusted by the position adjusting mechanism.

  The gripping portion is provided with a lower jaw that holds the lower surface of the end portion of the shape member, and an upper jaw disposed above the lower jaw, and the shape is between the upper and lower jaws. The shape member can be gripped by sandwiching the end portion of the material. In this case, the gripping portion is provided with a pulling mechanism that presses the shape member from above to below or from below to above when releasing the shape by the upper and lower jaws. Is preferred.

  According to the profile traction device of the present invention, the upper portion of the main body is guided by the upper guide rail and the lower portion is guided by the lower guide rail, so the main body moves to pull the profile. In this case, the moment applied to the main body is received by the upper and lower guide rails to stabilize the traveling, and the traveling resistance is small even when a large traction force is applied. Therefore, it is easy to control to maintain a predetermined traction speed and tension. In addition, since the drive is performed by the servo motor provided in the main body, fine control is possible and quick acceleration during towing and quick return after towing are possible, contributing to improvement in production efficiency. .

  Also, by providing a predetermined position adjustment mechanism, the height of the gripping part can be adjusted while maintaining the leveling of the gripping part, so that the end of the profile is gripped horizontally and pulled accurately in the horizontal direction. be able to.

It is a perspective view showing one embodiment of a shape traction device of the present invention. It is a rear view of the shape traction device of this embodiment. It is a right view of the shape traction device of this embodiment. It is a front view which shows the holding part which the traction apparatus for shape members of this embodiment has. It is the perspective view (a) which shows the part of the upper part of the holding part of FIG. 4, and a lower jaw, and a right view (b).

  Hereinafter, an embodiment of a traction device for a profile according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the traction device 10 for a shape member according to this embodiment is configured to support a grip portion 12 that grips an end portion Wa of a shape member W that has passed through an extrusion die, and the grip portion 12. A main body part 14 that moves in the pulling direction of the material W, an upper guide rail 16 that guides the upper part of the main body part 14 in the pulling direction, and a lower guide rail 18 that guides the lower part of the main body part 14 in the pulling direction. ing. Hereinafter, the vertical direction with respect to the horizontal plane is defined as the upward direction or the downward direction, and the pulling direction of the profile W is defined as the forward direction or the backward direction, and the direction perpendicular to the vertical direction and the longitudinal direction is defined as the left direction or the right direction. The vertical direction is also the height direction.

  As shown in FIG. 3 and others, the grip portion 12 includes a head portion 20 that grips the end portion Wa of the shape member W and a frame body 22 that supports the head portion 12. The vertical position at which the shape member (W) is gripped by the grip portion 12 is located between the upper guide rail 16 and the lower guide rail 18 in order to perform stable traction. Here, in addition to pulling only one shape W, there is a case where a plurality of shapes are towed and towed. Depending on the shape of the extrusion die set according to the shape and size of the shape W, the shape W is pulled. The number of shapes W to be determined is determined.

  The frame body 22 has a main frame 22a arranged substantially horizontally in the pulling direction, and the head portion 20 is attached to the tip of the main frame 22a. As shown in FIG. 1, FIG. 4, etc., the central portion of the main frame 22a is attached to the vertical plate 24a via a horizontal frame 22b having a predetermined length, and the base end portion of the main frame 22a is similarly arranged in the horizontal frame 22c. Is attached to another vertical plate 24a. A vertical plate 24b is disposed at a substantially middle position between the two vertical plates 24a, and the vertical plate 24b and the vertical plates 24a on both sides are connected by a mounting frame 22e. The vertical plate 24a is attached to a movable member 26b of the main body 14 described later, and the vertical plate 24b is attached to a ball screw device 27 of the main body 14 described later. The main frame 22a, the horizontal frames 22b and 22c, the two mounting frames 22e, and the vertical plates 24a and 24b are connected in a truss shape by a plurality of reinforcing frames 22d to constitute a strong frame body 22.

  The head portion 20 is provided with a lower jaw 28 that holds the lower surface of the end portion Wa of the shape member W. As shown in FIG. 5, the lower jaw 28 is composed of a pair of L-shaped members that open and close to the left and right, and in a closed state, the lower surface of the end portion Wa of the shape member W abuts against the inner bottom surface 28a. The lower jaw 28 is opened and closed by being driven by a first driving device 30 such as an electric cylinder attached to the frame body 22 and rotating a gear 34 via a first rod 32.

  Above the bottom surface 28a of the lower jaw 28, there is provided an upper jaw 36 in which a plurality of sawtooth-shaped plate members are arranged in parallel and a wide uneven surface is formed downward. The base end portion of the upper jaw 36 is pivotally supported by a shaft portion 33 provided at the distal end portion of the main frame 22a. The upper jaw 36 is rotated by being driven by a second drive device 38 such as an electric cylinder attached to the frame body 22 and displacing the lever 42 via the second rod 40.

  Further, a bar-shaped pressing member 44 a disposed in the width direction of the upper jaw 36 is provided at a position on the lower surface side of the shaft portion 33. Both ends of the pressing member 44a are supported by the distal ends of the pair of support members 44b, and the base end of the support member 44b is pivotally supported by the shaft portion 33. Similar to the upper jaw 36, the pressing member 44a and the support member 44b are driven by the second driving device 38 and function as a separating mechanism 44 when the profile W is removed. Specifically, when releasing the gripping of the profile W by the upper and lower jaws 36 and 28, the pressing member 44a presses the profile W downward from the upper side and bites into the teeth of the upper jaw 36. Is moved away from the upper jaw 36.

  The upper guide rail 16 and the lower guide rail 18 are long rails having substantially square cross sections, and are laid in the pulling direction of the profile W. Although not shown, the pressing by the separating mechanism 44 may be performed from below to above.

  As shown in FIGS. 2 and 3, the main body 14 moves with the upper portion guided by the upper guide rail 16 and the lower portion guided by the lower guide rail 18. A ball screw device 27 is erected vertically on the side portion of the upper portion of the main body portion 14. Guide frames 26a are vertically erected at two locations in the front and rear of the ball screw device 27 in the pulling direction, and a movable member 26b that slides in the vertical direction is attached to a side surface of each guide frame 26a. In the grip portion 12, the vertical plate 24 b is fixed to the nut of the ball screw device 27, and the two vertical plates 24 a are fixed to the movable member 26 b and supported by the main body portion 14. The rotation of the screw shaft of the ball screw device 27 is driven by a servo motor 46 attached to the upper end portion of the ball screw device 27, and the height of the grip portion 12 can be adjusted by controlling the vertical position of the nut. . That is, the ball screw device 27, the guide frame 26a, and the movable member 26b are configured as a position adjusting mechanism 48 of the grip portion 12. By this position adjusting mechanism 48, the gripping portion 12 is moved in parallel in the vertical direction, and the height of the gripping portion 12 can be adjusted in the same posture before and after the adjustment.

  In the upper part of the main body 14, there are two longitudinal wheels 50 that roll on the lower surface of the upper guide rail 16 in the pulling direction, and one side of the upper guide rail 16 on the side where the grip 12 is provided. Two lateral wheels 52 that are in contact with the opposite side surface and roll in the pulling direction are provided.

  The lower part of the main body 14 also has two longitudinal wheels 54 that roll on the upper surface of the lower guide rail 18 in the pulling direction, and one side of the lower guide rail 18 that is provided with the grip 12. In contact with the opposite side surface and the two front and rear horizontal wheels 56 rolling in the pulling direction, and the other side surface of the lower guide rail 18 on the side where the grip portion 12 is provided, and in the pulling direction. Two lateral wheels 58 before and after rolling are provided. A large servo motor 60 for traveling the main body 14 along the upper and lower guide rails 16 and 18 by the respective wheels 50, 52, 54, 56 and 58 is provided at the lower portion of the main body 14. .

  A pinion 62 for driving the main body 14 is rotatably connected to the rotation shaft of the servo motor 60 via a gear mechanism (not shown). The pinion 62 meshes with a rack 64 that is fixed along the lower guide rail 18 and has teeth formed on the back side, and moves the main body 14 along the upper and lower guide rails 16 and 18. On the opposite side of the pinion 62 with the rack 64 in between, a support member 65 is provided in contact with the back side of the rack 64 and having a built-in support roller that supports the engagement between the pinion 62 and the rack 64.

  The main body 14 is provided with an emergency brake device 61 adjacent to the servo motor 60 to stop the movement of the main body 14 in an emergency. The emergency brake device 61 is a device that performs a braking operation by contacting the lower guide rail 18 or the rack 64 when power supply to the servomotor 60 is stopped due to a power failure or the like.

  Next, an operation in which the profile traction device 10 grips and pulls the end portion Wa of the profile W will be described. First, the profile traction device 10 is arranged in the vicinity of the extrusion die, and before the profile W is gripped by the head portion 20, the position adjustment mechanism 48 is driven to adjust the height position of the grip portion 12, The center height of the profile W gripped by the head portion 20 is made to coincide with the extrusion center height of the extrusion die. At this time, since the angle of the bottom surface 28a of the bottom surface 28a of the lower jaw 36 is changed in a horizontal state, the surface to be held as in the conventional puller apparatus for extrusion disclosed in Patent Document 2. However, there is no problem of being different from the extrusion direction of the profile W.

  When the end portions Wa of the plurality of shapes W that have passed through the extrusion die are gripped by the head portion 20, the lower jaws 28 that are open to the left and right are closed, and the lower surface of the end portion Wa of the shape W at the inner bottom surface 28a. After that, the upper jaw 36 is rotated so that the uneven surface is strongly pressed against the upper surface of the end portion Wa to sandwich the shape member W.

  When the grip portion 12 grips the shape member W, the servo motor 60 of the main body portion 14 is driven to pull the shape member W. Since the upper portion of the main body portion 14 supports the heavy grip portion 12, the lateral wheel 52 on the opposite side of the grip portion 12 strongly contacts the side surface of the upper guide rail 16 to maintain the posture of the main body portion 14, The horizontal wheel 52 and the vertical wheel 50 roll smoothly without leaving the surface of the upper guide rail 16. Therefore, the upper portion of the main body 12 is smoothly guided along the upper guide rail 16. Regarding the lower part of the main body 14, the horizontal wheels 58 and 56 firmly hold the left and right side surfaces of the lower guide rail 18, and the horizontal wheels 58 and 56 and the vertical wheel 54 do not leave the surface of the lower guide rail 18. Rolls smoothly. Therefore, the lower portion of the main body 12 is also smoothly guided along the lower guide rail 18. In particular, since the upper and lower portions move smoothly, the wheels 50, 52, 54, 56, and 58 are in contact with the upper and lower rails 16 and 18 with respect to the moment applied to the main body 14. Thus, unlike the conventional extruded material pulling device disclosed in Patent Document 1, problems such as inclination of the main body and large load fluctuations on the wheels do not occur.

  When releasing the grip, the head unit 20 moves the upper jaw 36 away from the lower jaw 28 and moves the pressing member 44a of the separation mechanism 44 toward the lower jaw 28. Since the saw-toothed uneven surface of the upper jaw 36 bites into the surface of the profile W, the profile W is not easily separated from the uneven surface, but the pressing member 44a presses the profile W in the direction of the lower jaw 28. The end portion Wa of the profile W is reliably pulled away from the upper jaw 36. And the edge part Wa of the profile W is open | released by opening the lower jaw 28 right and left.

  The movement of the shape traction device 10 can be freely adjusted by controlling the servo motor 60, the forward movement speed (traction speed) is precisely adjusted to a relatively low speed, and the backward movement speed (return speed) is It is easy to increase the speed. If the return speed is increased, the towing operation of the next shape member W can be started quickly, so that a plurality of towing operations can be performed efficiently.

  As described above, according to the profile traction device 10 of this embodiment, the upper part of the main body 14 is guided to the upper guide rail 16 and the lower part is guided to the lower guide rail 18. When towing the shape member W, the posture of the main body portion 14 is stabilized, the movement resistance is small, the towing speed and the tension can be precisely controlled, and the control is easy.

  Further, a position adjusting mechanism 48 is provided, and the height of the gripping portion 12 can be adjusted while maintaining the horizontality of the gripping portion 12, and the end portion Wa of the shape member W is gripped horizontally, so that the horizontal direction can be accurately measured. Can be towed to. For this reason, when towing a shape W having a different shape, even if the height of the center position in the towing direction changes, the posture for gripping the shape W can be made the same, and the towing state by height adjustment can be changed. There will be less change.

  The profile traction device of the present invention is not limited to the above embodiment. For example, the structure of the head portion of the gripping portion is not limited to a structure in which the end portion of the shape member is sandwiched between the upper and lower jaws, and may be a structure in which a plurality of shape members are appropriately gripped by jaws and claws, A structure that holds a plurality of pieces together may be used.

  You may change the number of wheels provided in the upper part and lower part of a main-body part, and an attachment position. For example, when the main body is long in the front-rear direction, the number of wheels may be increased or the attachment pitch in the front-rear direction may be increased. Further, the plurality of power sources (electric cylinders, servo motors, etc.) and power transmission mechanisms (link mechanisms, etc.) of the above embodiment are merely examples, and can be freely selected according to the scale of the shape traction device and the required power. You can choose.

  In the separation mechanism of the above embodiment, when the shape bites into the surface of the lower jaw, the separation mechanism may be provided on the lower jaw side or may be provided on both.

DESCRIPTION OF SYMBOLS 10 Traction apparatus 12 Profile part 14 Main part 16 Upper guide rail 18 Lower guide rail 20 Head part 22 Frame body 28 Lower jaw 36 Upper jaw 44 Pulling mechanism 48 Position adjusting mechanism 50, 54 Vertical wheels 52, 56, 58 Side wheel 60 Servo motor 62 Pinion 64 Rack W Profile Wa End

Claims (5)

In the profile traction device (10) for towing the profile (W) that has passed through the extrusion die,
A gripping portion (12) for gripping an end portion (Wa) of the shape member (W), and a main body portion (14) for supporting the gripping portion (12) and moving in the pulling direction of the shape member (W); ,
An upper guide rail (16) for guiding the upper portion of the main body (14) in the pulling direction, and a lower guide rail (18) for guiding the lower portion of the main body (14) in the pulling direction. A traction device for a profile, comprising: The main body (14) includes an upper wheel (50, 52) that rolls the surface of the upper guide rail (16) in the traction direction, and a lower wheel that rolls the surface of the lower guide rail (18) in the traction direction. (54, 56, 58) and a drive mechanism (60, 62, 64) for driving the main body (14) along the upper and lower guide rails (16, 18),
The drive source of the drive mechanism (60, 62, 64) is a servo motor (60) provided in the main body (14), and the traction speed of the profile (W) is controlled by the servo motor (60). 2. The profile traction device according to claim 1, which is controlled.   The grip portion (12) is supported by the main body portion (14) via a position adjusting mechanism (48), and is provided so that the height position relative to the main body portion (14) can be adjusted by the position adjusting mechanism (48). The traction device for a profile according to claim 1 or 2   The grip portion (12) includes a lower jaw (28) that holds the lower surface of the end portion of the profile (W), and an upper jaw (36) disposed above the lower jaw (28). 4. The traction device for a profile according to claim 3, wherein the profile (W) is gripped by sandwiching an end of the profile (W) between the upper and lower jaws (28, 36). . When the gripping of the profile (W) by the upper and lower jaws (28, 36) is released, the profile (W) is directed from below to above or from below to above. The traction device for a shape member according to claim 4, further comprising a pulling-off mechanism (44) for pressing the pressing member.

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