JPH042514B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is directed to the production of belts, tires, etc., in which a cord as a core material is attached to the circumferential surface of a winding core that forms 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 core by inserting a pair of tapered chucks into fitting holes at both ends, and rotates the core together with the chucks by a drive device. The cord is fed out from a cord carrier that is 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.

In addition, as shown in Fig. 6, the core is supported by a fitting hole A'1 which is opened at the center of both end faces of the core A' and whose diameter is gradually reduced toward the inside. ,
This is accomplished by inserting and supporting a tapered chuck 4' whose outer diameter is gradually reduced toward the distal end in accordance with the fitting hole A'1. Such a core support structure is disclosed in, for example, Japanese Utility Model Application Publication No. 103149/1983.

[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 A'1 will be smaller than the size of the winding core A'. , it had to be reinforced 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 attached to 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 chucks that match the size of the holes in the core. To do this, it was necessary to prepare and replace chucks for each core size, resulting 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, in this case, as shown in FIGS. 5a and 5b, the supporting positions of both ends of the winding core A with respect to the chuck 4 change each time the winding core size 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 of the cord from the beginning to the end of the cord, and when the cord reaches the end of the core, I have to stop the rotation. As a result, other work cannot be done during that time, resulting in poor work efficiency and the waiting time is troublesome for the worker as well. Incidentally, when winding the cord, the work of winding (usually gluing) the starting end of the cord around one end of the circumferential surface of the winding core is performed manually by an operator.

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, it is possible for the operator to To provide a cord winding device in which the cord winding operation 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, the chuck supports the fitting holes at both ends of winding cores of various sizes with different chuck fitting hole diameters, and rotates the winding core via the spindle to attach the winding core to the winding core. A cord winding device for winding a cord unwound from a cord carrier movable along the winding core from one end to the other end of a circumferential surface of a winding core, the cord winding device comprising: a main shaft movably supporting the cord carrier; and a main shaft movably supporting the cord carrier; A feed threaded rod and an auxiliary shaft that are rotatable in conjunction with each other are arranged parallel to the spindle, and a threaded sleeve of a predetermined length with a threaded portion formed on the outer peripheral surface is movably fitted onto the auxiliary shaft. At the same time, a stopper member is attached to the auxiliary shaft at a position corresponding to the fixed side chuck, the threaded sleeve is urged to contact the stopper member in a normal state, and a preset moving distance of the threaded sleeve is detected. A detection means for stopping the rotation of the spindle and the feed screw rod is provided, and a block is provided with two screw holes that can be screwed into the feed screw rod and the screw sleeve, so that the block has a joint surface passing near the center of each screw hole. one of the divided blocks is fixed to the code carrier,
The other divided block is removably attached to the divided block.

[Function] According to the cord winding device of the present invention having the above-described configuration, the winding core on which the cord is to be wound is supported on the spindle by the chuck, and the cord carrier is rotated while one divided block is removed from the other divided block. 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 splitting block is attached to the other splitting block, and both splitting blocks are The screw holes formed by the screw holes 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 winding core and simultaneously rotates the feed screw rod, the cord carrier begins to move along the axial direction of the winding core due to the rotation of the feed screw rod, and the cord carrier moves away from the cord carrier. The unwound cord is wound around the circumferential surface of the winding core from one end to the other end. As the code carrier moves, the threaded sleeve also moves away from the stopper member along the auxiliary shaft. When the moving distance of the threaded sleeve reaches a preset distance (the length of the winding core), the detection means detects this and stops the rotation of the spindle and feed screw rod, and the cord extends over the entire length of the circumference of the winding core. The winding work ends automatically.

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

Fig. 1 is a partially omitted front view showing the cord wrapping device, Fig. 2 is a plan view of the same, Fig. 3 is a right side view of the same, Fig. 4 is a right side view of the cord carrier, Fig. 5 Figures a and b are front sectional views of the winding core supported by a chuck.

As shown in FIG. 2, at one end of the support base 1,
A spindle 2 is rotatably disposed via a pair of bearing devices 3, and a right side portion 2a of the spindle 2 projects laterally from the support base 1.
One of a pair of chucks 4 is fixed to the projecting right side portion 2a, and the other chuck 4 facing each other is attached so that its fixing position can be adjusted. Each chuck 4 has a tapered shape whose outer diameter gradually decreases toward the tip.

An auxiliary stand 5 is disposed on the support stand 1 so as to be movable in the front-rear direction, and the auxiliary stand 5 can be fixed at a fixed position on the support stand 1 with a handle 10. A right side portion 5a of the auxiliary stand 5 projects laterally from the support stand 1. 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 .
A threaded portion is formed on the outer peripheral surface of the feed threaded rod 9 over its entire length. The left end of the feed screw rod 9 is connected via a coupling ring 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 drive shaft 13 is connected to the spindle 2 via pulleys 15, 16 and a belt 17 so as to rotate in conjunction with the spindle 2. In addition, in order to allow movement of the auxiliary stand 5 in the front-back direction, an allowance is made in the length of the belt 17, and
The belt 17 is kept under tension by a tension pulley 18. As shown in FIG. 1, a drive motor 19 is installed at the bottom of the support base 1, and the drive motor
9 and the spindle 2 are connected.

A threaded sleeve 25 having a predetermined length and having a threaded portion formed on its 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, in this case at a position where a line extending from the base end of the chuck 4 in a direction perpendicular to the spindle 2 intersects the auxiliary shaft 8. has been done. The threaded sleeve 25 is connected to a shaft-shaped weight 27 by a wire 28 and biased toward the stopper ring 26 . 29 is wire 2
This is a pulley for changing direction.

As shown in FIGS. 1 to 4, the cord carrier 30 includes three rollers 3 for feeding out the cord.
A guide member 35, in which the guide members 2, 33, and 34 are rotatably attached at intervals in the longitudinal direction, is disposed at the upper end of the support 36 and protrudes in a direction perpendicular to the support 36. on the carrier body 31,
The main body 31 is arranged so that its position can be adjusted in the longitudinal direction via a rotary lever 37. Fourth
As shown in the figure, the carrier body 31 has an insertion hole 38 for the main shaft 7 (FIG. 1). Then, the first threaded hole 39 that can be screwed into the feed screw rod 9 (see Fig. 1) is inserted into the upper part of the threaded sleeve 25 (see Fig. 1).
A block 41, each having a second screw hole 40 in its lower part that can be screwed into the carrier body 31, is divided into two on a line passing through the centers of the first and second screw holes 39 and 40, and one divided block 41a is connected to the carrier body 31. It extends integrally to the bottom end. The other divided block 41b is detachably attached to the divided block 41a. and,
The code carrier 30 is inserted into the main shaft 7 through its insertion hole 38 and is disposed so as to be movable along the main shaft 7.

A limit switch 45 as a detection means is provided near the intermediate position of the support base 1, as shown in FIG. Further, at the lower end of the weight 27, an operating piece 46 for operating the limit switch 45 is provided.
is attached, and as the threaded sleeve 25 moves from the stopper ring 26 to the right (Fig. 1), the weight 27 is lifted and moved a preset distance (length L of the winding core A). Then, 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. A limit switch 47 is also provided near the right end of the main shaft 7, as shown in FIG. This limit switch 47 is
This prevents the code carrier 30 from overrunning, and the code carrier 30 comes into contact with a limit switch 47 to operate the limit 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.
Insert the fitting hole A1 (Fig. 5) at one end of the winding core A into the fixed side chuck 4 of the spindle 2a, and insert the other movable chuck 4 into the fitting hole A2 (Fig. 5) at the other end of the winding core A. By inserting and fixing, the winding core A is supported on the spindle 2a. In addition, in the apparatus of the present invention, since the winding cores A of various sizes are all supported and fixed by chucks of the same size, as shown in FIGS.
The supporting positions of both ends of the winding core A are shifted by X.

First, an operator attaches the normal code carrier 30 from which the split block 41b has been removed to the main shaft 7.
The starting end of the cord fed out from the cord carrier 30 is wound around one end (left end) of the circumferential surface of the winding core A and bonded. Then, the divided block 41b is attached to the main body 3.
It is joined and attached to the divided block 41a on the first side. In this state, the upper screw hole 39 formed by both split blocks 41a and 41b is screwed into the threaded part 9a of the feed screw rod 9, and the lower screw hole 40 is screwed into the threaded part of the threaded sleeve 25. .

Here, when the drive motor 19 is driven, the spindle 2 rotates, the winding core A rotates together with the chuck 4, and the cord (not shown) fed 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 cord carrier 30
The operating piece 46 of the weight 27, which has been rising as the weight 27 moves, comes into contact with the limit switch 45 and stops the drive motor 19, so that 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 adheres the end to the winding core A, thereby completing the cord winding work. Furthermore, if the operator removes the divided block 41b from the divided 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 wrapping device of the present invention, the operator first attaches the cord carrier 3 as described above.
0 to one end of the winding core A, winding the cord around the winding core A, and driving the drive motor 19, the device (drive motor 19) can be operated with the cord wound to the other end of the winding core A. The operation will automatically stop, allowing you to perform other tasks 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 of the winding cores A 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 cores of various sizes with different fitting hole diameters, the operator can simply wrap the starting end of the cord around the core when starting to wind the cord. The cord wrapping process automatically stops at the end. Therefore,
During this time, workers can perform other tasks,
Productivity improves.

(2) Since there is no need to provide ribs on the core to support the core as in the past, the core is easy to manufacture, lightweight, and easy to achieve roundness. 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 drawings]

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. The plan view and FIGS. 5a and 5b are 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, 25...Threaded sleeve, 26...Stopper ring (stopper member), 27...Weight ,
30...Code carrier, 39, 40...Screw hole, 41a, 41b...Divided block, 45...
Limit switch (detection means), A... winding core.

Claims (1)

[Scope of Claims] 1 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. The core is rotated via the spindle, and the cord, which is unwound from a cord carrier movable along the core, is inserted from one end of the circumferential surface of the core. A cord winding device for winding the cord around the other end thereof, wherein a main shaft movably supporting the cord carrier, a feed screw rod rotatable in conjunction with rotation of the spindle, and an auxiliary shaft are arranged parallel to the spindle. a threaded sleeve of a predetermined length with a threaded portion formed on the outer peripheral surface thereof is movably fitted onto the auxiliary shaft, and a stopper member is attached to the auxiliary shaft at a position corresponding to the fixed side chuck; A detection means is provided which urges the threaded sleeve to contact the stopper member in a normal state and stops the rotation of the spindle and the feed threaded rod by detecting a preset moving distance of the threaded sleeve; A block provided with two screw holes that can be screwed into a screw sleeve is divided into sections with joint surfaces passing near the center of each screw hole, one of the divided blocks is fixed to the cord carrier, and the other divided block is fixed to the cord carrier. A cord wrapping device characterized in that a block is detachably attached to the divided block.