JPS6186024A - Automatic chucking device for wire drawing machine - Google Patents

Abstract

PURPOSE:To automate a chucking and to elevate an operability by fitting a wire drawing drum on the lower end of a rotary shaft together with inserting a rod into the hollow rotary shaft movable reciprocally vertically and by enganging the wedge body of the lower end of a rod and the sliding lever incorporated in the drum. CONSTITUTION:A hollow rotary shaft 4 is made rotatable via a worm 8 with fitting a worm gear 6 to a spline part 5 and with supporting with the space between bearing parts 3, 3'. The rotary shaft 4 is moved reciprocally vertically by feeding hydraulic oil, also the rod 16 inside the inner cylinder 11 is made freely movable vertically. A blank (b) is fastened with pinching by the tapered face 22 of the wedge body 23 of the tip and dovetail 22' and the chuck claws 31, 32 of the sliding lever 27 with descending the rod 16 by inserting the blank (b) from the inserting port 34 of the wire drawing drum 20. A winding is then performed with the rotation of the drum 20. With this mechanism a chucking can be performed automatically, also the operability is improved due to a danger protection, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic chucking device for fixing the leading end of a drawn material to the wire drawing drum and releasing it in a drum winding type wire drawing machine.

Conventional technology In this type of wire drawing machine, the drawing wire is wound around a drum to perform the drawing operation, and the tip of the drawn material is fixed to the drum.
All release operations were performed manually by inserting and removing wedges installed in the box of the tension sling, and by hooking and unhooking the tension sling.However, the hooking and unhooking operations were troublesome, and the pulling out caused high heat. There were problems with safety and workability due to the danger of coming into contact with or being splashed by the drawn material.

In view of these points, the present applicant proposed a method disclosed in Japanese Utility Model Publication No. 49-T, QGS, which aims to automatically connect the leading end of the material to the drum of a wire drawing machine and release the same. He invented a single-tube wire drawing machine, which was equipped with a twist mechanism that spanned the inside of the winding drum in the diametrical direction and raised and lowered by raising and lowering the central node.
This is an extremely excellent device that allows the tip of the material to be held and released by moving one end of the bar by stretching and bending the left and right trouble bars.

Problems to be Solved by the Invention However, in the above-mentioned prior art, when there is a large difference in the diameter of the material due to a change in the diameter of the wire drawing, the doggle bar may grip the material in an unstable state bent in an angular shape. In addition, it is difficult to grip even when stretched, so a length adjustment mechanism is required depending on the thickness of the tip of the material.Also, there are many pivoting parts and the load on the pin part is thick, so it is necessary to use a thick and strong bar. The structure of the book is complicated and expensive, and furthermore, as mentioned above, adjustment is required when changing the drawing material, making it difficult to immediately adapt to drawing materials with different diameters.

This invention solves the above-mentioned various drawbacks all at once, and uses an extremely simple mechanism and operation to securely connect and release the leading end of the material to the wire drawing drum.

The object is to provide a chucking device that can be easily used.

Means for Solving the Problems The present invention provides a winding type wire drawing drum (1) of a trade-in wire drawing machine, which is provided with cylinder type pressure oil chambers @ and (b) inside the upper part and is reciprocated up and down. It is attached to the lower end of the hollow rotating shaft (to) of a double shaft structure consisting of a hollow rotating shaft (14) and a rod α inserted through the center of the shaft, and the lower end of the rod (to) has a tapered surface (toward) on one side. ) and fix the wedge body υ with a dovetail (to)′,
The tapered surface (2) and the dovetail groove at the inner end of the sliding rod (support) have this tapered surface (2) and dovetail groove built in so that they can slide along the radial direction of the end of the wire drawing drum. engage with the
A chuck claw 31. This invention relates to an automatic chucking device for a wire drawing machine, which is provided with a material insertion port (b) that opens from the outside of the wire drawing drum inward to the end surface of the drum between the chuck claws. It is something.

The configuration of the present invention will be specifically explained below with reference to the drawings.

A hollow rotary shaft (4) is provided on the rotary pot via the upper and lower bearing parts +31 (31'), and a spline is applied to the outer periphery of the middle part of the hollow rotary shaft. The worm tooth * (61) is fitted in the part (5), and the gear is supported between the bearing part 13 (31') and meshes with the worm (8) which is transmitted from the direct current collector (n), and the hollow rotating shaft (4) is repeated 6 times.

Inside the upper part of the hollow rotating shaft (4), in an outer cylinder (9) attached to the bearing part (3), the upper part is fixedly suspended from the center part of the outer cylinder (9), and on the outer periphery of the middle part. An inner cylinder (B) equipped with a piston-shaped flange αO is fitted to form a pressure oil chamber (to) between the inner cylinder I and the hollow rotating shaft (4), and an inner cylinder is fitted into the pressure oil chamber. Oil pipe 0 or α installed on the cylinder wall
By feeding pressure oil from the bottom, the hollow rotating shaft +41 is reciprocated up and down, and a rod α equipped with a piston (toward) is inserted into the inner cylinder 0 through the center of the hollow rotating shaft. An oil passage (
) Or, by sending pressure oil from σ, rod α・
The top of the screen should be made to move.

A wire drawing drum (to) is attached to the lower part of the hollow rotating shaft.

The lower end of the rod u1 has a tapered surface (included on one side) inclined from top to bottom toward the axis through a notch in the hollow rotating shaft.
A square wedge body (to) with a convex dovetail (to) at its longitudinal center is fixed with a mounting bolt (2), and the tapered face and dovetail of this wedge (to) are fixed. , a sliding rod (2) that is built into the drum to be slidable in the radial direction by a square groove (to) provided in the radial direction inside the end face of the wire drawing drum and a cover plate (e) attached to the opening of the square groove (to). The corresponding tapered surface (to) and the dovetail sw' on the inner end of the sliding rod are engaged with each other, and the tip of the sliding rod has an inclined engagement portion (to) that intersects diagonally and is bolted to the lower surface of the sliding rod. A wedge-shaped chuck pawl (B) is mounted to be able to slide slightly laterally with a presser plate (Gl), and a chuck pawl (B) is attached to the inner wall of the wire drawing drum (2) opposite to this chuck pawl (Gl). G1) is fixed by a presser plate bolted to the end face of the drum, and the outside of the wire drawing drum (1) is moved inward from the outside of the drum almost tangentially between the chuck claws G1) and G1). ＠ is a take-up frame placed directly below the wire drawing drum holder, which has a material insertion opening opened on the end face side, and is moved at the same speed as the wire drawing drum holder by a transmission device It. The winding frame is rotated, and the winding frame can be taken out and replaced with an empty winding frame around the axis (b). ＠ is a presser roll that presses the drawn wire as it is wrapped around the wire drawing drum (E). It is supported by a lever → that swings horizontally around the support shaft G1 by the operation of a hydraulic cylinder (To), and the wire is drawn. It is provided close to the outer periphery of the drum and can be moved away from it. Rumor has it that the die holder is equipped with a die for drawing the material, (b) is a wire guide to guide the tip of the material, and (g) is a pneumatic cylinder that lowers and holds this at the core of the die holder. This is a tip guide device consisting of:

Operation In the present invention, with the above-described configuration, the line guide of the tip guide device (b) is lowered to the position of the die center line (a) of the die holder by the operation of the pneumatic cylinder.

The material (b) extracted through the die Q of the die holder (6)
) is inserted into the material insertion port (end) of the wire drawing drum holder located in the state shown in Fig. S through the wire guide (Fig. Then, the rod α is lowered through the piston (2), and due to the tapered surface @ and dovetail 1' of the wedge body (C) provided at its lower end,
The sliding rod (B) is slid outward in the direction of the drum half f flea through the tapered surface (to) and dovetail #l@'' that engage with these, and the chuck claw Cl1) and (support) at the tip thereof are The leading end of the material (b) is clamped and tightened. Then, the hydraulic α9 is closed and this state is maintained, and the worm (
8) and then to the worm gear (6), which rotates the hollow rotating shaft (4) and the wire drawing drum (1) through spline fitting.

, At this time, the chuck claw (11) is moved by the sliding rod due to the tension of the material.
The tip (b) of the material is gripped more firmly by sliding slightly laterally using the inclined fitting surface and the presser plate (1) as a guide.
It begins to wrap around the wire drawing drum (E). At this time, the transmission device IT (to) is driven to move the winding frame (to) to the wire drawing drum (
While rotating at a constant speed in the same direction as 1), the hydraulic cylinder (
The lever (b) is rotated around the spindle by the operation of (to), and the presser roller (to) presses the wound wire on the wire drawing drum. When the oil is sent, the hollow rotating shaft I4) and the wire drawing drum (1) gradually descend while rotating due to the pressure, so that the drawn material (C) is wound spirally around the outer periphery of the wire drawing drum (to). The wire is towed and the drawing operation continues, and when the wire is wrapped to the bottom of the 7th lunge of the drawing drum (end), the oil pipe α4 is closed and the wire is rotated at that position.
Next, when oil conduit a9 is opened and pressure oil is sent from the oil conduit (to) to the pressure oil chamber α, αrad α・ is raised via the piston (g), and the wedge body @ at the lower end is raised. , the sliding rods that are engaged through mutual tapered surfaces (to) (to) and dovetails 114@' and 114@' are slid backward toward the center of the wire drawing drum (1), and the chuck claw C31 is retreated from the material insertion port (2), and the leading end of the material is released, so that the leading end of the material (b) falls onto the winding frame (end), and the wire drawing material wrapped around the wire drawing drum holder is removed. (C) is successively pushed downward and continuously falls into the winding frame, so that the pulling operation and winding operation are performed continuously.

When the drawing work of the material is completed, pressure oil is sent from the oil pipe (to) to the pressure oil chamber (2), and the hollow rotating shaft (4) is
), the wire drawing drum (1) is raised and returned to the original position shown in Fig. S, and the lever (
The presser foot a-roo 1 is also moved backward and returned from the peripheral side of the wire drawing drum member via b), and the drawn wire, which has been wound up as a trade-in on the winding frame support, is moved to the appropriate position together with the winding frame (end). and be tied together as appropriate.

As described in detail, the automatic chucking device for a wire drawing machine of the present invention has a hollow rotary shaft to which a winding type wire drawing drum of a wire drawing machine is attached, and a rod disposed at the center of the shaft. The end surface of the wire drawing drum has a tapered surface and a dovetail formed on one side of a wedge attached to the lower end of the rod, which is provided so that it can freely reciprocate up and down by feeding pressure oil into a pressure oil chamber configured inside the upper part of the rotating shaft. The tapered surface and dovetail groove of the inner end of a sliding rod built in so as to be freely slidable in the radial direction are engaged with each other, and chuck claws are provided between the tip of the sliding rod and the inner side of the wire drawing drum opposing thereto. With,
Since the wire drawing drum is provided with a material insertion port that is open on the end face side between these chuck jaws, the tip of the material extracted from the die can of course be easily inserted straight into the material insertion port from the outer circumference of the drum. On the wedge body due to the F lowering movement of the rod, the chuck claw facing the insertion port opens and closes appropriately in the radial direction of the drum via the sliding rod, and the tip of the drawn material is held against the wire drawing drum by only the F movement. All fixing and releasing are done automatically, making single-wrap trade-in wire drawing work easy and quick. In addition, even if there is a large difference in the shape of the tip of the material due to changes in the diameter of the drawn wire, the length adjustment mechanism of the doggle bar, like the conventional toggle mechanism type that undulates and extends,
It is possible to provide an automatic chucking device that requires no operation at all, has an extremely simple configuration, and has efficient fixing and releasing operations at a relatively low cost, reducing work hazards, accident prevention, and wire drawing work efficiency. Features that can be significantly improved.

It has the following.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of the main parts showing an embodiment of the device of the present invention;
Figure 1 is a bottom view of the wire drawing drum, Figure 3 is a detailed view of the same part, Figure 9 is a detailed view of the end surface of the wire drawing drum, and Figure S is the entire wire drawing machine equipped with the device of the present invention. FIG. (4)...Hollow rotating shaft -d...pressure oil chamber, Q...rod, aη...pressure oil chamber, (to)...wire drawing drum, ω'...drum inner wall, @...tapered surface , d... with, I23... cuneiform, @... suriku rod, (to)... theno (face, C21'
...With m, sl, @...Chuck claw, (to)...Material insertion slot. Person: Kawazoe Machinery Co., Ltd. Agent Terumi Kotani i7″゛] Figure 2 F8

Claims (1)

[Scope of Claims] 1. A wrap-type wire drawing drum of a trade-in wire drawing machine is fitted with a hollow rotary shaft that is provided with a cylindrical pressure oil chamber inside the upper part and is reciprocated up and down, and is inserted through the center of the shaft. A wedge body with a tapered surface and a dovetail on one side is fixed to the lower end of the rod, and this tapered surface and dovetail are attached to the end of the wire drawing drum. The chuck claws are engaged with the tapered surface and dovetail groove on the inner end of the sliding rod, which is built in so as to be able to slide along the radial direction of the rod, and the chuck claws are engaged with the tip of the sliding rod and the inner wall of the wire drawing drum opposite thereto. An automatic chucking device for a wire drawing machine, further comprising a material insertion port opening between the chuck claws at the end surface of the drum from the outside to the inside of the wire drawing drum. 2. The chuck claw at the tip of the sliding rod is attached so as to be slightly slidable via an inclined engagement surface that intersects the advancing and retreating direction of the sliding rod. Automatic chucking device for wire drawing machine.