JPH0631564A - Clamping device for end finishing machine - Google Patents

Abstract

PURPOSE:To provide a clamping device for end finishing machine to which rod steel members can be supplied and collected in a simple manner, easily automated and low in cost. CONSTITUTION:A clamping device for end finishing machine is equipped with a guide rail 12 arranged horizontally, a pair of clamping members 13 and 14 which are installed in slidable menner in opposed state on the guide rail and separation/contact operate in synchronization, and a driving means 15 for separation/contact-operating a pair of clamping members, and a rod steel member W is held horizontally by a pair of clamping members 13 and 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device used in an end processing machine for cutting the outer circumference of an end of a steel bar such as a forged product.

[0002]

2. Description of the Related Art A steel bar manufactured by forging or the like is cut into a final product by cutting the outer periphery of the end with an end processing machine. In doing so, conventionally, after the bar steel material is grasped from above and below by a clamping device having an aligning function, which is provided alongside the end processing machine, each end is cut by the end processing machine.

In this case, since the conventional clamp device grips the steel bar material from above and below, the clamp device becomes high in the up and down direction. As a result, it is necessary to take an unnecessary dead space between the clamp device and the clamp device because it is arranged above the clamp device and the conveying device that conveys (collects and collects) the steel bar to the clamp device. There was a problem that space wasted.

Further, since the clamping device clamps the steel bar material from the vertical direction, the collecting material of the steel bar material to the clamping device must be carried out from the horizontal direction. For this reason, it is troublesome to collect the steel bar to the clamp device by the transfer device,
In particular, it has been a major obstacle in automating the operation of such a transport device. Further, the clamp device must be provided with a bar steel centering mechanism in order to accurately perform the end cutting by the end processing machine. Therefore, there is a problem that the clamp device becomes large and the clamp device becomes expensive.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a clamp device for an edge processing machine, which is easy to collect bar steel into the clamp device, easy to automate, and inexpensive. To aim.

[0006]

To achieve the above object, according to the clamp device for an end processing machine of the present invention, the guide rails are arranged horizontally, and the guide rails are slidable so as to be opposed to each other on the guide rails. A configuration in which a pair of clamp members that are installed and operate to separate and contact in synchronization with each other and a drive unit that operates to separate and contact the set of clamp members are provided, and the pair of clamp members horizontally grips a steel bar material; It was done.

[0007]

The pair of clamp members are operated to separate and contact in the horizontal direction along the guide rail by the driving means, and grip or release the steel bar material from the horizontal direction.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. FIG. 1 shows an arrangement of clamp devices 10 and 20 used for the end processing machines 1 and 2. A traverser 3 is arranged above the clamp devices 10 and 20, and a support member 4 vertically installed on the traverser 3. Is provided with five hooks 5 at predetermined intervals.

Here, the vertical position of the support member 4 is adjustable, and therefore the vertical position of the five hooks 5 can also be adjusted. The hook 5 is an L-shaped member in a side view in which a support arm 5b is attached to a lower portion of a column 5a,
In consideration of the case of supporting the round bar steel material, the support arm 5b is formed with an arcuate concave portion 5c corresponding to the outer peripheral shape of the supporting round bar steel material. Further, the traverser 3 moves in the front and back directions with respect to the paper surface, and the steel bar W to be end processed
Is supported by any one of a plurality of hooks 5 among the five hooks 5 depending on the length thereof, and the support member 4, and thus the vertical position of the plurality of hooks 5, is adjusted between the end processing machines 1 and 2. It will be transported.

The end processing machines 1 and 2 are clamp devices 10,
The bars 20 are arranged on both sides of the bar steel 20, and the outer peripheral portion of each end of the steel bar W is subjected to a predetermined cutting process. Since the end processing machines 1 and 2 have the same configuration, one end processing machine 1 will be described.
The other end processing machines 2 are given corresponding reference numerals in the drawings, and detailed description thereof will be omitted. The edge processing machine 1 has a support base 1a.
A slide table 1c is slidably installed on a guide rail 1b provided above, and a bite driving device 6 is placed on the slide table 1c.

In the bite driving device 6, a lifting table 6b is movably mounted on the side surface of the main body 6a facing the clamping device 10, and a rotating table 6c is rotatably supported on the lifting table 6b. There is. The rotary table 6c has a sliding groove 6d formed in the diametrical direction, and the sliding groove 6d
The tool holder 6e is attached to the. A bite 6f for cutting the outer periphery of the end of the steel bar W is attached to the bite holder 6e.

One of the clamping devices 10, 20 is slidable in the longitudinal direction of the steel bar W, as shown by the chain double-dashed line in FIG. 1, according to the length of the steel bar W.
The structure is the same except that the other clamp device 20 does not slide in the longitudinal direction of the steel bar W. Therefore, only one clamp device 10 will be described, and detailed description of the other clamp device 20 will be omitted. Here, as shown in FIG. 2, the clamping devices 10 and 20 are usually arranged at positions separated from each other, and when the steel bar W supported by the plurality of hooks 5 is conveyed, the clamping devices 10 and 20 are The steel bar W is gripped by being closed as shown by the dotted line.

The clamp device 10, as shown in FIG.
Provided on the slide table 11 are two guide rails 12 and 12 (one of which is not shown) and guide rails 12 and 1.
It is provided with clamp members 13 and 14 that are slidably installed so as to be opposed to each other on the two and drive means 15 that operates to separate and contact the clamp members 13 and 14. Here, the slide table 11 is horizontally mounted on the slider 10b slidably mounted on the support base 10a, and
By the motor 16 attached to one side of b, the clamping device 1
With 0, the steel bar W is slid in the longitudinal direction. That is,
In the motor 16, a pinion 16a attached to a rotating shaft meshes with a rack 10c attached to a support 10a, and the forward / reverse rotation of the motor 16 causes the slide table 11 to move along the longitudinal direction of the steel bar W together with the clamp device 10. Slide it.

The guide rails 12 and 12 are rails for smoothly guiding the separating operation of the clamp members 13 and 14, and are laid in parallel with the upper surface of the slide table 11. The clamp members 13 and 14 hold the steel bar W by contacting and separating in synchronization with each other. Clamp members 13, 14
Is a slider 13a, 1 installed on each guide rail 12.
Slide tables 13b and 14b are provided on 3a (one is not shown) and sliders 14a and 14a, and clamp claws 13c and clamp claws 14c and 14c are mounted on the slide tables 13b and 14b, respectively. As shown in FIG. 3, the clamp claw 13c and the clamp claws 14c and 14c are configured to clamp the steel bar W at three positions.
The clamp claws 13c are opposed to each other by the clamp claws 14c, 14c.
It is mounted on the slide table 13b with its position offset.

Here, the clamp claws 13c and 14c are opened vertically so as to form an angle of 90 ° as shown in the drawing, and shock absorbing members 13d and 14d are attached thereto. Therefore, the clamp claws 13c and 14c can adjust the vertical position of the bar 5 to an appropriate position by adjusting the vertical position of the hook 5 even if the diameter of the steel bar W conveyed by the plurality of hooks 5 is different. For example, the steel bar W can be gripped in the left-right direction while maintaining the center position.

Further, the clamp members 13 and 14 are provided with nuts 13d, at the center of the lower surfaces of the slide tables 13b and 14b.
14d is provided, and the clamp members 13 and 14 are connected to the drive means 15 by nuts 13d and 14d.
The drive unit 15 includes a screw shaft 17 and a drive motor 18, and the clamp member 1 is rotated by the forward and reverse rotations of the screw shaft 17.
3 and 14 are synchronized and operated to separate and contact.

The screw shaft 17 has bearings 1 at both ends and in the middle.
7a (the intermediate bearing is not shown) is rotatably supported,
A gear 17b is attached to the end portion on the clamp member 14 side. Further, on the screw shaft 17, a screw portion 17c formed of a left screw on the clamp member 13 side and a screw portion 17d formed of a right screw on the clamp member 14 side are formed at the same pitch, and the screw portion 17c is formed on the slide table 13b. The nut 13d and the screw portion 17d are screwed with the nut 14d of the slide table 14b at positions equidistant from the intermediate position of the screw shaft 17, respectively.

The drive motor 18 is the slide table 11
Is supported by a support plate 11a attached to the end of the screw shaft 17, and a gear 18a attached to the rotary shaft meshes with a gear 17b attached to the end of the screw shaft 17. Then, the gear 19b and the gear 18a are covered with a cover 19 from the outside. Therefore, the clamp members 13 and 14 are operated by the rotation of the screw shaft 17 so that the slide tables 13b and 14b are synchronously moved in and out in the horizontal direction at a constant speed, and the steel bar W supported by the plurality of hooks 5 is Clamp claw 1 as indicated by the middle two-dot chain line
3c and clamp claws 14c, 14c are used for clamping.

The clamp devices 10 and 20 are constructed as described above, and clamp the steel bar W as follows when cutting the end of the steel bar W being conveyed. First, as shown in FIG. 2, the steel bar W supported by the plurality of hooks 5 is conveyed by the traverser 3 between the end processing machines 1 and 2, and the vertical position is compared with the end processing machines 1 and 2. Adjust to a predetermined position and set from above.

Then, one end of the steel bar W is clamped by the clamp device 2.
When set to the position of 0, the motor 16 rotates corresponding to the length of the steel bar W, and the clamp device 10 is slid to the other end position of the steel bar W. Next, the clamp device 10
Starts to operate and the drive motor 18 rotates to move the slide tables 13b and 14b forward to the steel bar W side, and the steel bar W clamps the clamp claw 13c and the clamp claws 14c and 14c.
It is clamped from the left and right at three points. At this time, since the vertical position of the steel bar W is adjusted in advance, the center position does not change vertically or horizontally even when clamped by the clamp claws 13c and the clamp claws 14c, 14c. It is clamped while being supported by the plurality of hooks 5. The above-described operation of clamping the steel bar W is performed in the clamping device 20 in exactly the same manner.

Therefore, the steel bar W clamped by the clamp members 13 and 14 does not need to be re-aligned in the subsequent cutting by the end processing machines 1 and 2. Therefore, the end working machines 1 and 2 may be advanced to the end of the steel bar W to start cutting. Then, when the end processing is completed, the end processing machines 1 and 2 are retracted to predetermined positions, and then the clamping device 10,
The steel bar W is clamped by 20 and lifted up from between the end processing machines 1 and 2, and the traverser 3 conveys it to the subsequent processing step.

In the clamp device for an end processing machine of the present invention, the bar member W can be clamped easily without changing the center position of the bar material W only by moving the clamp member in the horizontal direction. Therefore, it is possible to automate the clamping operation of the steel bar W when the end of the steel bar W is processed by the end processing machines 1 and 2, for example, by using an unmanned conveying device.
It is suitable for conveying and processing end parts.

Further, in the above embodiment, the end processing of the round bar steel material has been described, but the clamp device for the end processing machine of the present invention can process the bar steel material even when the bar steel material is a flat plate or a corner. Needless to say.

[0024]

As is apparent from the above description, according to the clamp device for an end processing machine of the present invention, it is possible to collect the bar steel material to the clamp device from above, and to collect the material. The operation involved is simple, and since the clamping members move in the horizontal direction at the same speed in synchronization, it is not necessary to align the steel bars, so it is possible to automate the operations involved in collecting and collecting steel bars. Since a separate aligning mechanism for aligning the center positions of (1) and (2) is not required, excellent effects such as low cost can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing a clamp device for an end processing machine of the present invention, showing an arrangement of the end processing machine and the clamp device.

FIG. 2 is a side view of the clamp device for an end processing machine of FIG.

FIG. 3 is a partially enlarged plan view of a clamp claw of the clamp device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Clamping device 11 Slide table 12 Guide rails 13 and 14 Clamping member 15 Drive means 16 Motor 17 Screw shaft 18 Drive motor 20 Clamping device

Claims (2)

[Claims] 1. A horizontally arranged guide rail, a pair of clamp members which are slidably installed on the guide rail so as to be opposed to each other and are operated to separate and contact in synchronization with each other, and the pair of clamp members are separated from each other. A clamping device for an end processing machine, comprising a driving means for actuating contact, and gripping a steel bar horizontally by the set of clamping members. 2. The pair of clamp members has a dogleg-shaped clamp claw for horizontally gripping a steel bar, one clamp member being one clamp claw, and the other clamp member being two clamp claws. The clamp device for an end processing machine according to claim 1, further comprising a clamp claw, wherein the clamp claws of both clamp members grip the steel bar material at three locations.