JPH0225527Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a small-diameter tip part that becomes the grip part of the draw bench when pultrusion forming materials such as pipes and bars through dies into gradually smaller diameter pipes and bars. This invention relates to a scroll feeder for a pre-applying machine for forming a material in advance on the leading edge of a material.

Conventional technology Conventionally, in order to form a tip at the tip of a material such as a pipe or a bar, an air hammer was used to reciprocate (beat and pressurize) the tip of the material from three or four sides toward the center of the material. Feed between the hammers of a well-known advance machine,
The material is struck with a hammer from the periphery of the material to form a tip with a small diameter cross section that passes through the die hole.The material is fed into the tip attaching machine in a straight line without rotating the material by driving a feed roll. Two methods are used: one is to feed the material while rotating, and the other is to sandwich the material between a pair of concave and convex straightening rolls whose rotation axes intersect with each other.

The shape of the small diameter tip part at the tip of the material is a round tip part 33 with a circular cross section as shown in Fig. 6B.
As shown in Figure A, there are two types: a clover-shaped tip 32 that can be simply hit with a hammer from all four sides.

Problems to be Solved by the Invention The above-mentioned material feeding method for the conventional tip-applying machine equipped with a hammer does not rotate the material, so it is suitable for forming a clover-shaped tip-applying part by hitting it with a hammer from all sides. It is not possible to form a tip with a small cross section, and in order to make this possible, it is necessary to release the feeding device and a separate rotation device for the material, which makes the device complicated and large, and requires complicated changes such as replacing the feeding roll. Work is required.

In addition, in the above-mentioned material feeding method, the material is fed between the hammers while being rotated, so it is impossible to form a clover-shaped tip. Even if the tip-applying machine is hit with the arcuate surface of the hammer from all sides, fins are generated around the tip-applying part due to the mutual gap between the hammers, which causes problems such as scratches on the material drawn product. It was hot.

Means for Solving the Problems The present invention is a well-known material feeding device that feeds materials to a pre-applying machine, in which materials such as pipes and bars (hereinafter simply referred to as materials) are fed into the pre-applying machine while rotating. By making it possible to easily feed the material in three ways: ,) stopping the feed and just rotating it at that position, and) feeding the material straight ahead without being rotated, It is an object of the present invention to provide a material supply device for a tip attaching machine that can form a tip with a round cross section as needed, eliminate the occurrence of fins in the tip, and form the tip according to the purpose.

The structure of the present invention for achieving the above object will be explained using FIGS. 1 to 5 corresponding to embodiments.

A moving body 1 provided on a base 3 facing the advance machine
A rotating body 7 having a gear 9 attached to the outer periphery of the body and a disc part 12 having concave grooves 11 on all four sides in a cross shape is rotatably supported, and a gear 13 is mounted on the outer periphery of the disc part 12. At the same time, the rear inner edge 14 of the tooth ring 13 and the rear outer periphery of the scroll plate 16 rotatably fitted in the annular groove 15 provided on the back surface of the disk portion 12 are mutually engaged on the circumference. let Each concave groove 11 of the disk portion 12 has a chuck pawl 22 that clamps the material 31 inserted into the rotating body 7, and a tooth profile 21 that engages with the spiral groove 16a of the scroll plate 16 on the back surface.
The gears 23 and 24, which are rotated by electric motors or hydraulic motors 25 and 26, respectively, which are mounted on appropriate positions on the outer periphery of the movable body 1, are inserted into the chuck body 20 so as to be able to slide in the radial direction. The gear 13 and the scroll plate 1 are meshed with the gear 13 and the gear 9, respectively.
By the rotation of step 6, the chuck body 20 is slid and the material 3 is removed.
1 is clamped and released, and the material 31 is rotated by the rotation of the gear 9 and the rotary cylinder 7. Furthermore, the movable body 1 is provided on the base 3 so as to be slidable back and forth by the hydraulic cylinder 5, and the advance attachment machine 29 is This scroll feeder is a pre-applying machine that can individually operate the feeding of the material between the malleable hammers 30 that reciprocate in the radial direction from the four sides of the center of the material.

Operation A material 31 such as a pipe or a bar is passed through the hollow rotating body 7 supported by the movable body 1 located on the phantom line in FIG. When the hydraulic motor 25 is driven, the gear 13 is rotated by the gear 23 at the end of the shaft, and the scroll plate 16 that engages with the rear inner edge 14 of the gear 13 is rotated.
Several chuck bodies 20 are slid through the grooves 11 of the disk portion 12 toward the center of the material via the teeth 21 that engage with the chucks 6a, thereby holding the material 31 therebetween. Next, by activating the hydraulic cylinder 5 and retracting the operating rod 6, the movable body 1 is moved on the base 3 to the solid line position side, and the leading edge of the material is moved to the four hammers 3 of the advance applicator 29.
A clover-shaped tip part 32 with a small cross section that can be fed without rotating between zero and compressed at the tip of the material.
can be formed.

When the electric motor or hydraulic motor 26 is driven after the material 31 is clamped as described above at the position indicated by the phantom lines in FIG. The material 31 rotates while being held between the chuck claws 22 of several chuck bodies 20 held by the chuck body 20. Then, by operating the hydraulic cylinder 5 to move the moving body 1 from the position of the temporary line to the position of the solid line at a predetermined speed,
The material 31 is rotated by the hammer 30 of the pre-applying machine 29.
The tip of the material is fed into the hammer 3 from the surrounding area.
A round tip part 33 with a small circular cross section is formed at the tip of the material by striking with a zero.

In this case, the hammers 30 strike from all sides of the center of the material at the same position, so when the feeding speed is faster than the rotational speed of the material 31, the small gap between the hammers 30 creates a fin around the tip of the material. When this occurs, the material is fed in while rotating as described above, and when the feeding of a certain length is finished, the operation of the hydraulic cylinder 5 is stopped to stop the movement of the moving body 1, and at that position, the material is fed in as described above. When the material 31 is rotated by the operation of the electric motor or hydraulic motor 26, the leading edge of the material is evenly hammered and compressed from the surrounding area by the hammer 30, thereby preventing the formation of fins.
A smooth tip with a small circular cross section can be formed at the center of the material.

Embodiment (1) is a movable body installed on a base 3 facing a front attaching machine 29, and is moved back and forth by an operating rod 6 of a hydraulic cylinder 5 along a track 4 of the base 3 via a lower leg 29. It is designed so that it can be slid. Reference numeral 7 denotes a rotating body which is rotatably supported by the moving body 1 via bearings 8, 8. A gear 9 is attached to the outer periphery of the body, and a cross-shaped square body is integrally attached to the front part with mounting bolts 10. It has a disk portion 12 having grooves 11, 11, . A cut-shaped tooth ring 13 having a rear inner edge 14 is fitted on the outer peripheral surface of the disk portion 12, and
The rear inner edge 14 and the rear outer periphery of the scroll plate 16 rotatably fitted in the annular groove 15 provided on the back surface of the disk portion 12 are defined by notches provided on the circumference, respectively, as shown in FIG. 17 and the protrusion 18, they are engaged with each other with a small margin in the direction of rotation.

Reference numeral 20 denotes a chuck body fitted into each of the grooves 11 of the disk portion 12, and the scroll plate 16 is attached to the back side.
A tooth profile 21 is formed to mesh with a spiral groove 16a provided on the front surface of the holder, and a chuck pawl 22 is provided at the inner tip so as to be replaceable.

Gears 23 and 24 are mounted on shafts 27 and 28 at appropriate positions on the outer periphery of the movable body 1 to be rotated by electric motors or hydraulic motors 25 and 26, respectively. 24 meshes with a gear 9 attached to the center of the rotating body 7, and the rotation of the gear 23 causes the gear 13 and the scroll plate 16 to be rotated.
is rotated, and the chuck main body 20 slides in the radial direction within the groove 11 to clamp or release the material 31. Also, due to the rotation of the gear 24, the rotating body 7 and the disc part 12 are integrated via the gear 9. It is rotated so that it can rotate while holding the material.

Reference numeral 30 refers to a well-known tip attachment machine, which is a malleable type hammer placed on three or four sides, which moves up and down to strike the material with compressed air, thereby forging a small cross-section tip at the tip of the material. be.

The movable body 1 is moved back to the position indicated by the phantom line in FIG. 1 by the operation of the hydraulic cylinder 5 after the feeding of the material and the forming of the tip part are completed as described above.

Effects of the invention Since the present invention has the above-mentioned configuration, when feeding (feeding) materials such as pipes and bars to the preloading machine, the front part of the rotary cylinder supported on the moving body is operated by one hydraulic motor. The chuck body installed in the rotary cylinder slides in the radial direction to clamp or release the material inserted into the rotary cylinder, and the rotary cylinder and chuck part are rotated via a gear system by the operation of another hydraulic motor. The material is rotated by the machine, and the material is fed between the malleable hammers of the machine by moving a moving body mounted on a base opposite to the machine by a hydraulic cylinder. The material can be operated in three ways: feeding the material between the hammers of the advance machine while rotating it, feeding the material without rotating it, and stopping feeding and just rotating the material at that position. Feeding can be done freely and easily, and the material can be fed to form the desired tip, such as a clover-shaped tip that does not allow the material to be rotated, or a round tip with a small circular cross section that requires rotation. It is simple and easy to use, and the entire device is very well organized, takes up less space and is more compact than conventional devices of this type, and there is no need to rearrange feed rollers, etc., making it easy to handle and operate. A material feeding device for a presetting machine can be obtained. Furthermore, by stopping the feeding of the material and only allowing it to rotate, the formation of fins around the tip due to the mutual small gaps between the malleable hammers arranged on three or four sides can be eliminated, and the cause of scratches on the drawn product can also be eliminated. In addition, the hydraulic motor on the clawing side of the chuck acts as a brake and locks the chuck in the direction in which the chuck loosens during rotation, so that the material can be clamped without becoming loose.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the preloading machine scroll feeder of the present invention, with main parts cut away, Fig. 2 is a front view of Fig. 1, and Fig. 3 is an A-O of Fig. 2. Figure 4 is an enlarged cross-sectional view taken along line B-O.
6A and 6B are a perspective view and a front view, respectively, showing the shape of the tip of the tip of a material such as a tube or a bar. 1... Moving body, 3... Base, 5... Hydraulic cylinder, 7... Rotating cylinder, 9... Gear, 11... Concave groove,
12... Disk portion, 13... Gear ring, 14... Rear inner edge, 15... Annular groove, 16... Scroll plate, 1
6a... spiral groove, 20... chuck body, 21...
...Tooth profile, 22...Chuck pawl, 23, 24...Gear, 25, 26...Electric motor or hydraulic motor, 29
...Advanced machine, 30...Maleable hammer, 31...Material.

Claims (1)

[Scope of utility model registration request] A rotary body 7 having a gear 9 on the outer periphery of the body and a disk portion 12 having concave grooves 11 on all four sides of the cross is supported on a movable body 1 provided on a base 3.
A tooth ring 13 is fitted on the outside of the tooth ring 2, and a rear inner edge 14 of the tooth ring and an annular groove 15 on the back surface of the disc part 12 are fitted.
The outer periphery of the rear part of the scroll plate 16 rotatably fitted in the scroll plate 16 is engaged with each other on the circumference, and a tube or rod-shaped material 31 to be inserted into the rotating body 7 is held in each groove 11 of the disk part 12. A chuck body 20 having a chuck pawl 22 and a tooth profile 21 on the back surface that engages with the spiral groove 16a of the scroll plate 16 is inserted into the chuck body 20, and is rotated by electric motors or hydraulic motors 25 and 26, respectively, which are mounted on shafts at appropriate positions on the outer circumference of the movable body 1. The gears 23 and 24 are connected to the gear 1.
3 and the gear 9, the chuck body 20 is slid by the rotation of the gear 13 and the scroll plate 16, and the material 31 is released from the grip, and the material 31 is rotated and further moved by the rotation of the gear 9 and the rotary cylinder 7. A scroll feeder is a pre-applying machine in which a body 1 is provided to be movable back and forth on a base 3 by a hydraulic cylinder 5, and material feeding between malleable hammers 30 of a pre-applying machine 29 can be independently operated. .