JPH02127366A - Cord wrapping device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention is directed to the production of belts, tires, etc. in the process of manufacturing belts, tires, etc. by applying a cord as a core material to the circumferential surface of a winding core forming the core of a molding die. The present invention relates to a cord winding device for winding a cord.

[Prior Art] Conventionally, this type of winding device generally supports a pair of tapered chucks inserted into fitting holes at both ends of a winding core, and rotates the winding core together with the chucks by a drive device. The cord is fed out from a cord carrier movable along the winding core and is wound around the winding core from one end to the other end of the circumferential surface of the winding core.

Further, the support of the winding core is as shown in FIG.
The outer diameter of the fitting hole A'1 was opened in the center of both end faces of the A' and the diameter of the fitting hole was gradually reduced toward the inside. This was done by inserting and supporting a chipped chuck 4°. Such a support structure for the winding core is disclosed in, for example, Japanese Utility Model Publication No. 60-103149.
It is disclosed in the publication No.

[Problems to be Solved by the Invention] In the conventional core support structure described above, when attempting to support cores of various sizes while keeping the outer diameter of the chuck constant, the fitting holes provided on both end faces of the core are Since it is necessary to match the diameter to the size of the chuck, in the case of a large winding core A'' as shown in Figure 6, the fitting hole A1 will be smaller than the size of the winding core A°. It was necessary to provide reinforcement by providing ribs B at appropriate locations on both end faces. but,
Manufacturing a winding core provided with ribs is time-consuming and increases the weight, and since the ribs are usually provided on the winding core by welding, it is difficult to achieve roundness of the winding core. In addition, if fitting holes that match the size of the core are provided on both end faces of the core so that reinforcing ribs are not required, use a chuck that matches the size of the fit hole in the core. must,
To do this, it was necessary to prepare and replace chucks for each core size, which resulted in poor work efficiency.

Therefore, by making use of the tapered shape of the chuck and using the same chuck regardless of the size of the core, it is possible to support cores of various sizes with different fitting hole diameters. There is no need to provide ribs and there is no need to replace the chuck. However, if you do so,
As shown in FIGS. 5(a) and 5(b), the supporting positions of both ends of the winding core A with respect to the chuck 4 change each time the size of the winding core changes. Therefore, even if the length of the core A around which the cord is wound is constant, the operator must monitor the winding condition from the beginning to the end of the cord, and when the cord reaches the end of the core, The rotation of the core must be stopped. Therefore, since other work cannot be done during that time, work efficiency is poor and the waiting time is troublesome for the worker.

In addition, when winding the cord, the work of wrapping the starting end of the cord around one end of the circumferential surface of the winding core (usually connecting or attaching it) is as follows:
This is done manually by a worker.

This invention was made in view of the above points, and even when the same chuck is used to support winding cores of various sizes with different fitting hole diameters, the winding of the cord is performed at the beginning. To provide a cord winding device in which the winding operation of the cord is automatically stopped at the end of the winding core by simply winding the starting end of the cord around the winding core.

[Means for Solving the Problems] In order to achieve the above object, the cord winding device of the present invention uses a chuck fixed to a spindle of a pair of tapered chucks whose outer diameter is gradually reduced toward the tip. and a chuck movable along the spindle, supporting the fitting hole portions at both ends of winding cores of various sizes with different chuck fitting hole diameters, and rotating the winding core via the spindle,
A cord winding device that winds a cord unwound from a cord carrier movable along a winding core from one end of the peripheral surface of the winding core to the other end, the cord winding device comprising: a main shaft movably supporting the cord carrier; and the spindle. A feed threaded rod that is rotatable in conjunction with the rotation of the spindle and an auxiliary shaft are respectively disposed parallel to the spindle, and a threaded sleeve of a predetermined length having a threaded portion formed on the outer peripheral surface is movably attached to the auxiliary shaft. At the same time, a stopper member is attached to the auxiliary shaft at a position corresponding to the stationary chuck, and the threaded sleeve is urged to contact the stopper member in a normal state, and the threaded sleeve is moved a preset distance. A block provided with two screw holes that can be screwed into the feed screw rod and the threaded sleeve is connected through the center of each screw hole. The cord is divided into planes, one of the divided blocks is fixedly attached to the code carrier, and the other divided block is detachably attached to the divided block.

[Function] According to the cord winding device of the present invention having the above-described configuration, the core on which the cord is to be wound is supported on the spindle by the chuck, and when one divided block is removed from the other divided block, the cord carrier is moved along the main shaft to one end of the winding core, and the starting end of the cord fed out from the cord carrier is wound around one end of the circumferential surface of the winding core, and then the split block is attached to the other split block, and both ends are wound. The screw holes formed by the block are screwed into both the threaded portions of the feed screw rod and the screw sleeve, respectively. In this state, when the spindle rotates the core and simultaneously rotates the feed screw rod, the cord carrier begins to move along the axial direction of the core due to the rotation of the feed screw rod, and the cord carrier The cord is unwound from the winding core and is wound around the core from one end to the other end. As the cord carrier moves, the threaded sleeve also moves away from the stopper member along the auxiliary shaft. and,
The travel distance of the threaded sleeve is a preset distance (
When the length of the winding core is reached, the detection means detects this and stops the rotation of the spindle and the feed screw rod, and the work of winding the cord over the entire length of the circumferential surface of the winding core is automatically completed.

[Example] Hereinafter, an example of the cord wrapping device of the present invention will be described based on the drawings.

Figure 1 is a partially omitted front view of the cord wrapping device, Figure 2 is its top view, Figure 3 is its right side view, Figure 4 is its right side view of the cord carrier, and Figure 5. (a) and (b) are respectively front sectional views of the winding core supported by a chuck.

As shown in FIG. 2, a spindle 2 is rotatably disposed at one end of the support base l via a pair of bearing devices 3, and the right side portion 2a of the spindle 2 is attached to the support base l. It juts out from the side. The protruding right side part 2a
One of the pair of chucks 4 is fixed, and the other opposing chuck 4 is attached so that its fixing position can be adjusted. Each chuck 4 has a tapered shape in which the outer diameter gradually decreases toward the tip.

An auxiliary stand 5 is disposed on the support stand L so as to be movable in the front and rear directions, and the auxiliary stand 5 is moved by the handle 10. It can be fixed in place above. Auxiliary stand 5
The right side portion 5a of the support base l projects laterally from the support base l. A pair of support members 6 are respectively erected on both sides of the projecting right side portion 5a. A main shaft 7 is disposed between the upper ends of the support member 6, and an auxiliary shaft 8 is disposed between the lower ends of the support member 6, parallel to the spindle 2. A feed screw rod 9 is rotatably disposed between the intermediate portions of the support member 6 via a bearing 11 in parallel to both shafts 7 and 8 . On the outer peripheral surface of the feed screw rod 9,
A threaded portion is formed over the entire length. The left end of the feed threaded rod 9 is connected via a coupling 14 to the right end of a drive shaft 13 rotatably disposed between a pair of bearing devices 12 erected on the auxiliary stand 5 .

The driving shaft 13 is connected to the spindle 2 via a pulley 15, 16 and a belt 17 so as to rotate in conjunction with said spindle 2.

Further, in order to allow movement of the auxiliary stand 5 in the front-rear direction, the length of the belt 17 is provided with an allowance, and the belt 17 is tensioned by a tension pulley 18. As shown in FIG. 1, a drive motor 19 is provided at the bottom of the support base l, and the drive motor 19 and the spindle 2 are connected via pulleys 20 and 21 and a belt 22.

A threaded sleeve 25 having a predetermined length and having a threaded portion formed on the outer peripheral surface is slidably fitted onto the auxiliary shaft 8 .

Further, a stopper ring 26 is fixed to the auxiliary shaft 8 at a position corresponding to the stationary chuck 4, where a line extending from the base end of the chuck 4 in the direction perpendicular to the spindle 2 intersects the auxiliary shaft 8. ing.

The threaded sleeve 25 is connected to a shaft-shaped weight 27 by a wire 28, and the stopper ring 2
It is biased in the direction of 6. 29 is a pulley for changing the direction of the wire 28.

The code carrier 30, as shown in FIGS. 1 to 4,
A guide member 35 to which three rollers 32, 33, and 34 for feeding out cords are rotatably attached at intervals in the longitudinal direction is arranged at the upper end of the support 36 and extends in a direction perpendicular to the support 36. The support body 36 is disposed on the carrier body 31 so that its position can be adjusted in the longitudinal direction of the body 31 via a rotary lever 37. As shown in FIG. 4, the carrier body 31 has an insertion hole 38 for the main shaft 7 (FIG. 1). A first screw hole 39 that can be screwed into the feed screw rod 9 (FIG. 1) is provided at the top, and a second screw hole 40 that can be screwed into the threaded sleeve 25 (FIG. 1) is provided at the top.
A first block 41 and a second block 41 each having a
One divided block 41a, which is divided into two on a line passing through the centers of the screw holes 39 and 40, extends integrally at the lower end of the carrier body 31. Also, the other divided block 4
1b can be detachably attached to the split block 41a. And code carrier 30
is inserted into the main shaft 7 through its insertion hole 38 and is movably disposed along the main shaft 7.

A limit switch 45 as a detection means is provided near the intermediate position of the support base l, as shown in FIG. Also,
A limit switch 4 is provided at the lower end of the weight 27.
5 is attached, and the threaded sleeve 25 is moved from the stopper ring 26 to the right (the first
The weight 27 is lifted as it moves to
After moving a preset distance (the length of the winding core A), the operating piece 46 comes into contact with the limit switch 45, actuating the switch 45, and stopping the rotation of the drive motor 19. Further, a limit switch 47 is also provided near the right end of the main shaft 7 as shown in FIG. This limit switch 47 prevents the code carrier 30 from overrunning, and the code carrier 30 comes into contact with the limit switch 47 to activate the switch 47.

Next, the manner in which the cord wrapping device of the above-described embodiment is used will be explained based on FIG. 1.

The threaded sleeve 25 is normally urged by the weight 27 and comes into contact with the stopper ring 26.

At this time, the weight 27 is at the lowest position. A fitting hole A is provided at one end of the winding core A in the fixed side chuck 4 of the spindle 2a.
t (Fig. 5), and the other movable chuck 4 is inserted and fixed into the other end fitting hole ^2 (Fig. 5) of the winding core A, thereby supporting the winding core A on the spindle 2a. do. In addition,
In the apparatus of the present invention, the winding cores A of various sizes are all supported and fixed by chucks of the same size.
As shown in b), depending on the size of the winding core A, the chuck 4
The supporting positions of both ends of the winding core A are shifted by X.

First, a worker moves the cord carrier 30 with the divided block 41b removed along the main shaft 7 to the winding core A.
is moved to one end (left end) of the cord carrier 30, and the starting end of the cord let out from the cord carrier 30 is wound around one end (left end) of the peripheral surface of the core A and bonded. Then, the divided block 41
b is joined and attached to the divided block 41a on the main body 31 side.

In this state, the upper screw hole 39 formed by both divided blocks 41a and 41b is connected to the threaded portion 9a of the feed screw rod 9.
Furthermore, the lower screw holes 40 are screwed into the threaded portions of the screw sleeve 25, respectively.

Here, when the drive motor 19 is driven, the spindle 2
rotates, the winding core A rotates together with the chuck 4, and a cord (not shown) paid out from the cord carrier 30 is wound around the winding core A. At the same time, the feed screw rod 9 rotates in conjunction with the spindle 2, and the cord carrier 30 is sent toward the other end (right end) of the winding core A. As a result, the cord is sequentially wound around the circumferential surface of the winding core A from one end to the other end. In this way, when the cord is wound to the other end (right end) of the winding core A, the operating piece 46 of the weight 27, which has been rising as the cord carrier 30 moves, comes into contact with the limit switch 45 and stops the drive motor 19. Therefore, the rotation of the spindle 2 and the feed screw rod 9 are stopped at the same time.

After the cord is stopped, the operator cuts the cord and glues the end to the winding core A, thereby completing the cord winding operation. Furthermore, if the operator removes the dividing block 41b from the dividing block 41a on the main body 31 side, the threaded sleeve 25
is urged by the weight 27 and moves until it comes into contact with the stopper ring 26, and returns to its original state.

Therefore, in the cord winding device of the present invention, as described above, the operator first moves the cord carrier 30 to one end of the winding core A, winds the cord around the winding core A, and then drives the drive motor 19. If this is done, the operation of the device (drive motor 19) will automatically stop with the cord wound to the other end of the winding core A, so that other work can be done during this time. Furthermore, if the lengths of the winding cores A are the same, the cord winding operation can be automatically stopped even if the sizes are different.

[Effects of the Invention] As is clear from the above, the cord wrapping device of the present invention has the following effects.

(1) Even when using the same chuck to support six different sizes of cores with different fitting hole diameters, the operator can simply wrap the starting end of the cord around the core at the beginning of winding the cord.
The cord winding operation automatically stops at the end of the winding core. Therefore, during this time, the work sound can be used for other work, improving productivity.

(2) Since there is no need to provide ribs on the core to support the core as in the conventional method, the core is easy to manufacture and lightweight, and it is easy to achieve roundness of the core. Furthermore, there is no need to replace the chuck every time a core of a different size is supported, which saves time and effort.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted front view showing an embodiment of the cord wrapping device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a right side view thereof, and Fig. 4 is a right side view of the cord carrier. Front view, Figure 5 (
(a) and (b) are respectively front sectional views of the winding core supported by a chuck. FIG. 6 is a partially sectional front view showing a conventional general core support structure. 2...Spindle, 4...Chuck, 7...Main shaft, 8...Auxiliary shaft, 9...Feed screw rod, 2
5... Screw sleeve, 26... Stopper ring (
Stopper member), 27... Weight, 30... Cord carrier, 39.40... Screw hole, 41 a
141 b...Divided block, 45... Limit switch (detection means), A. Winding core. Figure 2 Figure 30

Claims (1)

[Claims] Among a pair of tapered chucks whose outer diameter is gradually reduced toward the tip, the chuck is fixed to the spindle and the chuck is movable along the spindle, and the chuck fitting hole diameter is different in size. supports the fitting holes at both ends of the winding core,
A cord winding device that rotates the winding core via the spindle and winds a cord unwound from a cord carrier movable along the winding core from one end of the circumferential surface of the winding core to the other end, the cord A main shaft movably supporting the carrier, a feed screw rod rotatable in conjunction with the rotation of the spindle, and an auxiliary shaft are respectively disposed parallel to the spindle, and a threaded portion is formed on the outer peripheral surface of the predetermined predetermined shaft. movably fitting a long threaded sleeve onto the auxiliary shaft, and attaching a stopper member to the auxiliary shaft at a position corresponding to the stationary chuck, and urging the threaded sleeve to normally contact the stopper member. and a detection means for detecting a preset moving distance of the threaded sleeve to stop the rotation of the spindle and the feed threaded rod, and two threaded holes that can be screwed into the feed threaded rod and the threaded sleeve. The block is divided so that the joint surface passes through the center of each screw hole, one of the divided blocks is fixed to the cord carrier, and the other divided block is detachably attached to the divided block. Cord wrapping device.