JPS5840961Y2 - Wire rod connecting device for wire rod winding drum - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wire connecting device for a wire winding drum used mainly in a wire drawing device.

In the conventional device H, a connecting arm 12 is installed in a groove 11 formed on the circumferential surface of a wire winding drum A, as shown in FIGS.
The arm was rotatably supported on the groove wall via a vertical shaft 13 and was used in a wire drawing device G as shown in FIG.

This wire drawing device G raises the wire rod A while keeping the die holder B horizontal so that the wire rods wound around the winding drum A are lined up in a line without overlapping at the same time as the wire drawing starts. The conventional connecting device can be used for the wire drawing device as described above.
When used in a wire drawing device in which the die holder B is fixed at the wire input position C of the drum A, the arm 12 can only be rotated horizontally, so the tip of the wire rod A is lowered to the drum position of the arm 12 and connected. In addition, the number of windings of the wire rod a to the input position C was reduced, which was inconvenient.

Furthermore, in other conventional connecting devices, there is one in which a connecting chain is detachably attached to a drum, but this has the disadvantage that it takes time to attach and detach the connecting chain.

In view of the above points, the present invention aims to provide a wire rod connecting device for a wire winding drum that can be easily connected to a winding drum and that can be used in various wire drawing devices.

An embodiment of the present invention will be described below with reference to Figs. 3 to 5. Fig. 3 shows a wire drawing device G' using the wire connecting device according to the present invention, and 1 in the figure shows 3 is a die for reducing the cross-sectional area of the wire; 5 is a wire winding drum rotatably supported on the apparatus main body 1 via a vertical shaft 4; and 7 is a die for reducing the cross-sectional area of the wire; A die holding stand is rotatably attached to the device main body 1 so as to change the winding position, E is a wire supply stand, and F is a straightening device.

Reference numeral 16 denotes a wire connecting device according to the present invention attached to the winding drum 5, which is fitted into a groove 17 formed on the circumferential surface of the flat end portion of the drum 5 and retractably inserted into the groove. A connecting chain 18 and a wire gripping tool 19 fixed to the tip of the chain
Then, the base end of the front record 18 is attached to the wall surface 17a of the groove 17 along a horizontal axis 2 that is perpendicular to the vertical axis 4 and perpendicular to the circumferential surface of the drum 5.
A chain support 21 for rotatably supporting the chain support 21 via the chain support 1a, and a chain support 21 for enabling the front record 18 to be switched between a tensioned state when winding the wire and a relaxed state when attaching the wire. and a switching device 20 interposed between the chain 18 and the proximal end of the chain 18.

The switching device 20 includes an operating lever 23 that is rotatably supported on the support 21 via a second shaft 22 parallel to the vertical shaft 4, and a control lever 23 that is rotatably supported on the support 21 via a second shaft 22 that is parallel to the vertical shaft 4. an inverted U-shaped link 27 in side view, one end of which is connected via a second shaft 25 parallel to the second axis 25; and an inverted U-shaped attachment piece 24 in side view, one end of which is attached to the proximal end of the connecting chain 18 by a pin 18a.
, a third shaft 26 that is parallel to the vertical axis 4 and connects the other end of the attachment piece 24 and the other end of the link 27;
3, and a cam 28 formed on the peripheral edge of the first shaft.

The cam surface of the cam 28 is eccentric with respect to the -th shaft 22 so as to press the link 27 and move the mounting piece 24 toward the gripper 19 when the lever 23 is rotated to open.
Further, the second shaft 25 is arranged so as to be located on a line connecting the third shaft 26 and the pin 18a when the lever 23 is in the closed state.

Note that 29 is a tapered connecting hole of the gripper 19, and 30 is a wedge.

Next, to explain the operation, in order to wind up the drawn wire on the winding drum 5 using the device 16 of this example, first the die holding table 7 is rotated and tilted as shown in FIG. Then, the tip of the wire a is drawn through the die 3 to the lower end of the drum 5.

Then, on the drum 5 side, take out the connecting chain 18 from the groove 17, fit the tip of the wire rod a into the connecting hole 29 of the gripper 19, drive the wedge 30 from the chain side, and fit the wire rod a into the connecting chain. Connect to 18.

Incidentally, at the time of this connection, the lever 23 is rotated in the closing direction as shown in FIG. 4.

Also, due to the nature of the chain, the gripping tool 19 and the wire a are
8 can be connected at any position in the vertical direction of the drum 5, and the connecting position can be selected according to the rotational inclination angle of the die holding table 7.

Then, when the wire drawing process is started while rotating the winding drum 5 in the direction of winding the wire material a, the lever 23 is in the closed state, and the second shaft 25 is connected to the third shaft 26 and one end of the attachment piece 24. Since it is located on the line connecting the side pin 18a, the chain 18
Even if the link 27 is pulled toward the gripper 19 side, the link 27
The connecting chain 18 is in a tensioned state and is wound around the circumferential surface of the drum 5 together with the wire a.

Then, when the inclination angle of the die holder 7 with respect to the horizontal direction is made smaller at the same time as processing starts, the wire rods a wound around the drum 5 are lined up without overlapping, and the wire rods a are placed in the horizontal position of the holder 7. a reaches the entry line fixed position C.

Therefore, the drum 5 is stopped and the lever 2 of the coupling device 16 is
3 in the opening direction as shown by the chain line in Figure 4, the link 27
rotates around the third shaft 26, and the cam 2 of the lever 23
8 presses the link 27 and accordingly grasps the attachment piece 24 and moves it completely, so the chain 18 becomes slack and the tip of the wire a can be easily removed from the gripper 19.

Then, when the connecting chain 18 is inserted into the groove 17 of the drum 5 and the drum 5 is rotated again, the wire rod is continuously wound around the drum 5 from the wire entry position C, and the tip of the wire rod a is wound along the drum 5. It descends while rotating gradually.

As is clear from the above description, the present invention consists of a groove formed on the surface of a wire winding drum rotatable around a vertical axis, a connecting chain fitted into the groove so as to be freely retractable, and a tip end of the chain. a wire gripping device fixed to the section, a chain support for rotatably supporting the proximal end of the front record to the wall surface of the groove via a horizontal axis, and the support and the base end of the front record. and a switching device interposed between the switching device and the switching device, which is connected to the chain tension state when winding the wire to bring the proximal end of the previous record and the support close to each other, and the proximal end of the previous record. A switching lever is provided for switching to a chain relaxed state when the wire rod is attached, which separates the part and the support from each other.

Therefore, according to the present invention, the connecting chain and the wire can be connected at any position on the drum circumference within the length range of the chain.
There is no need to rotate the drum when connecting, or move the tip of the wire up and down to bring the tip of the wire closer to the gripping tool.
Compared to the conventional method, the connecting work efficiency can be improved, and the connecting chain can be loosened when removing the wire.
The wire rod can be easily removed, and excellent practical effects can be expected, such as being able to be used in various wire drawing devices.

[Brief Description of the Drawings] Fig. 1 is a schematic side view of a wire drawing device using a conventional wire rod device, Fig. 2 is a schematic plan view of the same winding drum, and Fig. 3 is an embodiment of the present invention. A schematic side view of a wire drawing device using an example wire rod connecting device, FIG. 4 is a plan view of the same wire rod connecting device,
FIG. 5 is a side view of the same. 1...Wire drawing device main body, 3...Dice,
4... Vertical shaft, 5... Wire winding drum,
1T...Groove, 17a...Wall surface, 18.
...Connection chain, 19...Wire rod grip, 20
... Means, 21 ... Chain support, 21a
...Horizontal axis, 22...N-th axis, 23...
...Lever, 24...Mounting piece, 25...
...Second axis, 26...Third axis, 27...
...Link, 28... Cam, 29...
Connecting hole, 30...Wedge.

Claims (1)

[Scope of utility model registration request] A groove 17 formed on the circumferential surface of the wire winding drum 5 rotatable around the vertical axis 4, and a connecting chain 1 fitted into the groove so as to be freely retractable.
8, a wire gripper 19 fixed to the tip of the chain, and a horizontal shaft 21 that connects the proximal end of the front record 18 to the wall surface 17a of the groove 17.
a chain support 21 for rotatably pivoting via a;
A switching device 20 is provided between the support 21 and the proximal end of the front record 18, and the switch 20 is connected to the front record 18.
The chain is in a tensioned state when winding the wire, which brings the proximal end of the record 18 and the support 21 close to each other, and the chain is relaxed, when the wire is attached, where the proximal end of the previous record 18 and the support 21 are separated from each other. A wire rod connecting device for a wire rod winding drum, characterized in that a switching lever 23 for switching is provided.