JPH089199B2 - Mat winding machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mat winding machine for winding a conductive wire in a spiral groove formed in a resin mat.

(Prior Art) A heating mat having a spiral groove in which a conductive wire is wound, as one of the manufacturing methods of a welding joint used for providing a branch portion in the middle of a pipeline of a synthetic resin gas pipe or a water pipe. There is a method of using. That is, this is a method in which the heating mat is set on a core, the core is set on a mold, and injection molding is carried out (see JP-A-58-65624).

By the way, a heating mat used in such a method for manufacturing a welded joint is generally manufactured by molding a resin mat having a spiral groove and winding a conductive wire in the spiral groove of the resin mat.

In addition, the mat winding machine that is conventionally used to wind a conductive wire in a spiral groove of a resin mat can move in a spiral locus with respect to a base, and the conductive wire can be placed on the resin mat. With a wire guide configured to be able to guide, the conductive wire is guided in a spiral groove by spirally moving the wire guide by a moving mechanism on a resin mat fixed on a base. It is designed to be pushed in manually or by a machine.

(Problems to be Solved by the Invention) By the way, in order to wind a conductive wire into a spiral groove of a resin mat using a conventional mat winding machine, the orbit of the wire guide must be accurately aligned with the spiral shape of the spiral groove. I have to do it.

However, since it is generally assumed that the resin mat is set in the core in a saddle-shaped bent state and is manufactured flexibly, the resin mat does not have a flat shape but is curved in a saddle shape. Some of them are uneven, and some are uneven. In the above conventional winding machine, since the wire guide can be spirally moved only on a preset orbit on the same plane, if there is a deformed portion as described above, the conductive wire spirals. Not guided over the groove.

That is, FIG. 6 shows this state. As shown in FIG. 6, when the resin mat 01 is curved in the vertical direction, the opening position of the spiral groove 02 is a planar shape. Therefore, even if the conductive wire 03 is guided to the regular position, the conductive wire 03 is not arranged in the spiral groove 02 opening.

In such a case, if the wire is pressed from the top as it is, there is a problem in that the conductive wire will dig into the portion between the spiral grooves.

In addition, if the position of the spiral groove is unstable in this way, when a flaw that connects the grooves of the spiral groove occurs during the manufacturing process of the resin mat, the conductive wire is guided to this flaw. There is also a problem in that the phenomenon of jumping over the groove may occur due to being broken.

Further, since the conventional mat winding machine moves the wire guide, there is a problem that it cannot be applied to a spiral groove having a shape that is not swung at a constant pitch, or if the diameter or pitch of the spiral groove is changed, It is also necessary to change the structure of the mechanism for moving the wire guide, and when several kinds of resin mats are set, it is necessary to manufacture as many devices as that kind.

The present invention focuses on the above-mentioned conventional problems, and is a simple mechanism, it is possible to reliably guide the conductive wire to the spiral groove without being affected by the curve of the resin mat or jumping phenomenon of the groove, and A mat winding machine that can be applied to multiple types of resin mats with different spiral groove diameters and pitches and that can reliably guide conductive wires even to spiral grooves with irregular pitches with one device. It is intended to be provided.

(Means for Solving the Problems) According to the present invention, a mother board having a guide groove and a rotary table on which a resin mat is installed are installed side by side on a base, and a guide pin that follows the guide groove and a wire guide that guides a conductive wire are provided. The copying member having the movable member is provided on the base so that the pressing member for pressing the conductive wire guided on the resin mat and the spiral groove from above is provided in the vicinity of the wire guide to achieve the above object. did.

That is, in the mat winding machine of the present invention, a rotary table rotatably provided on the base and on which a resin mat having a spiral groove is installed, and a rotary table provided on the base alongside the rotary table, the resin mat A motherboard having a guide groove formed in a spiral shape having the same center locus as that of the spiral groove, and a rotating mechanism for synchronously rotating the rotary table and the motherboard.
A guide member provided with a guide pin that can be inserted into a guide groove of the mother board and a wire guide formed so as to guide a conductive wire supplied from a conductive wire supply mechanism on the resin mat, and the copying member. A guide supporting unit that movably supports the base and a pressing unit that is provided in the vicinity of the wire guide and presses the conductive wire and the resin mat guided on the spiral groove from above are provided.

(Operation) In the mat winding machine of the present invention, first, a resin mat is installed on the rotary table. In this case, the spiral groove of the resin mat and the guide groove of the motherboard are installed so as to have a predetermined corresponding positional relationship.

Next, the position of the copying member is set. In this case, the conductive wire guided to the wire guide is installed at the predetermined winding start position of the spiral groove of the resin mat, and at the same time, the guide pin is inserted in the position corresponding to the winding start position of the guide groove. To be set.

Then, the rotary table and the motherboard are synchronously rotated by the rotary mechanism. Then, the guide pin relatively moves in the guide groove, whereby the copying member moves in the radial direction of the motherboard based on the support by the guide supporting means that can move relative to the base, and the wire moves as the copying member moves. The guide moves in the radial direction, that is, when the wire guide moves in the radial direction, the rotary table rotates synchronously with the mother board, so the wire guide moves on the spiral groove.

Therefore, the conductive wire is accurately guided on the spiral groove. Here, when the conductive wire and the resin mat guided on the spiral groove are pressed from above by the pressing means near the wire guide, the conductive wire is pushed into the spiral groove. Further, since the resin mat is pressed by the pressing means in this way, even if the resin mat is curved or has unevenness, the flexible resin mat is pressed onto the rotary table to have a flat shape. Since the pressing means is disposed in the vicinity of the wire guide, the resin mat at the position where the conductive wire is guided becomes flat, and the conductive wire is not guided while being displaced from the spiral groove.

In this way, the wire guide is arranged at the position corresponding to the position of the guide pin in the guide groove of the motherboard, so that the conductive wire can be accurately guided onto the spiral groove even if the pitch of the spiral groove is irregular. Even if the spiral groove is damaged, it is possible to prevent the phenomenon that the groove jumps over due to the damage.

Next, when the types of resin mats are different, that is, when the conductive wire is wound around resin mats having different spiral groove diameters and pitches, the motherboard is provided with guide grooves corresponding to the spiral grooves of the resin mat. To replace. Then, work is performed in the same procedure as described above. In this way, resin mats with different spiral groove diameters and pitches can be easily accommodated.

(Examples) Examples of the present invention will be described in detail below with reference to the drawings.

 First, the configuration of the embodiment will be described.

FIG. 1 is a perspective view showing a mat winding machine according to an embodiment of the present invention, which is a base 1 movably supported by casters 1a.
The rotary table 2 and the mother board 3 are arranged side by side.

The turntable 2 is provided with a resin mat m and is rotatably supported by the base 1. FIG. 2 is a plan view showing the resin mat m, which is a resin molded product of polyethylene resin, polypropylene resin, polyvinyl chloride resin, polybutene resin, or the like,
As shown in the figure, it is formed in a substantially square flat plate shape, a circular hole ma is formed in the center, and a triangular hole mb that can engage with a protrusion (not shown) formed on the rotary table 2 is formed at the end. The spiral groove md is formed in the groove portion mc in the region shown by the chain double-dashed line on one side. The hole mb serves as a guide for attaching the wire to the groove at the start. Incidentally, FIG. 2 shows a state in which the conductive wire w is wound in the spiral groove md. Further, as shown in FIG. 3, the spiral groove md is formed to have substantially the same diameter as the conductive wire w, and
The opening me is formed with a diameter smaller than that of the electric wire w to prevent the wound conductive wire w from coming off.

The mother board 3 is also rotatably supported by the base 1, and has a guide groove 3a formed in a spiral shape having the same center locus as the spiral groove md of the resin mat m.

The rotary table 2 and the motherboard 3 are configured to rotate synchronously in the same direction and at the same speed by a rotating mechanism 4 having a motor 4a as a drive source.

The base 1 includes a turntable 2 and a mother board 3
A support frame 5 is provided at a position above, and a conductive wire supply mechanism 6 and a press unit 7 are provided on the support frame 5.

The conductive wire supply mechanism 6 includes a bobbin 6a around which a conductive wire w is wound.
A guide pipe 6c for guiding the conductive wire w from the bobbin 6a toward the guide roller 6b, and a clip unit 6d for guiding the conductive wire w from the guide roller 6b to a position above the rotary table 2. Incidentally, the conductive wire w used here may be any of Cu wire, Ni wire, MuNi alloy wire and the like as long as it is a conductive wire.

The press unit 7 includes a slide plate 7b that is vertically movable with respect to two support rods 7a that are vertically provided on the support frame 5, and an air cylinder 7c that vertically slides the slide plate 7b. The resin mat m attached to the lower surface of the slide plate 7b and installed on the rotary table 2 is composed of a pressing plate 7d having a wedge-shaped cross section that can be pressed in the radial direction from the outer circumference to the center.

Further, the press unit 7 includes a welding unit 8
Also, a guide rod 9 as a copying member is attached.

The welding unit 8 melts a part of the resin mat m to weld the conductive wire w inserted in the spiral groove md to the resin mat m, and includes a sub-cylinder 8a provided on the slide plate 7b and a sub-cylinder 8a. Press board 8b mounted below slide plate 7b by sub-cylinder 8a
And a welding plate (not shown) that is heated to a high temperature. FIG. 5 is a plan view showing the press board 8b. The press board 8b is formed into a disc shape as shown in the figure, and has a narrow width for welding a welding plate (not shown). A plurality of grooves 8c are radially provided, and a wide guide groove 8b in which the pressing plate 7d and a wire guide 9b described later are arranged is partially formed.

The guide rod 9 is orthogonal to a straight line connecting the rotation center of the rotary table 2 and the rotation center of the mother board 3 with respect to the slide plate 7b by a slide guide 10 as guide support means (direction B in the figure). ) Is movable. The slide guide 10 is
Air cylinder 10a fixed to slide plate 7b
And the air cylinder fixed to the guide rod 9
Slide rod 1 slidably mounted on 10a
It consists of 0b.

One end of the guide rod 9 is arranged on the motherboard 3, and a guide pin 11 that can be inserted into the guide groove 3a is provided at this portion. The other end of the guide rod 9 is arranged on the turntable 2 and a wire guide 12 is provided.

As shown in FIG. 4, the wire guide 12 guides the conductive wire w guided from the conductive wire supply mechanism 6 onto the resin mat m installed on the rotary table 2 in a state of being close to the resin mat m. It is made possible. The wire guide 12 is provided in the vicinity of the pressing plate 7d, and the wire guide 12 and the pressing plate 7d are
When the wire guide 12 is brought close to the resin mat m, the pressing plate 7d presses the conductive wire w guided on the spiral groove md and the resin mat m from above to move the conductive wire w into the spiral groove md. It is pushed in, but it is provided in a vertical positional relationship so as to obtain a pushing force that does not easily push in the spiral groove md.

In FIG. 1, reference numeral 13 is a control device, which is configured to drive the air cylinder 7c, the rotating mechanism 4 and the sub-cylinder 8a at a predetermined timing.

 Next, the operation of this embodiment will be described.

When inserting the conductive wire w into the spiral groove md of the resin mat m in the mat winding machine of the present embodiment, first, the resin mat m is set on the rotary table 2.

Next, the conductive line w is initialized. That is, the tip of the conductive wire w guided by the conductive wire supply mechanism 6 is attached and fixed to the base 1 near the turntable 2 as shown in FIG.

Then, the air cylinder 7c is driven to lower the press unit 7. At the time of this lowering, the guide pin 11 at one end of the guide rod 9 is inserted into the starting point end (the position corresponding to the winding start position) of the outer periphery of the guide groove 3a of the motherboard 3 which is arranged in the regular position in advance with a predetermined pressing force Becomes Further, the wire guide 12 at the other end of the guide rod 9 is arranged close to above the starting end (winding start position) of the spiral groove md of the resin mat m (see FIG. 4), and the pressing plate 7d has a predetermined pressure. Press the resin mat m and conductive wire w with
8b presses the mat m.

At this time, it is confirmed whether the conductive wire w is correctly inserted into the starting end portion of the spiral groove md, and if the position is deviated,
The press unit 7 is once lifted and the above operation is performed again. By the way, the positional deviation of the conductive wire w at this time causes the conductive wire w to bend due to the bending or curling of the conductive wire w.
Is often caused by the fact that it does not extend straight from the fixed end to the fixed end, and when the press unit 7 is raised, such breakage of the conductive wire w is corrected.

Thus, when the conductive wire w is correctly inserted into the starting end portion of the spiral groove md, the rotating mechanism 4 is driven to rotate the rotating table 2
And the motherboard 3 are rotated synchronously. Then, the guide pin 11 relatively moves while being inserted into the guide groove 3a,
The wire guide 12 moves in the B direction as 11 gradually moves in the spiral center direction of the guide groove 3a, and accordingly, the wire guide 12 at the other end of the guide rod 9 moves.
Is arranged above the spiral groove md position corresponding to the position of the guide groove 3a in which the guide pin 11 is arranged.
Guide the conductive wire w to the top.

At this time, the resin mat m near the wire guide 12
Even if the flexible resin mat m is curved or has unevenness due to being pressed by the pressing plate 7d, the rotary table 2
Therefore, as shown in FIG. 4, the resin mat m is flat at the position where the conductive wire w reaches the resin mat m as shown in FIG. There will be no displacement between w and the spiral groove md.

Then, the conductive wire w guided to the spiral groove md is pressed downward by the pressing plate 7d and is pushed into the spiral groove md.

In this way, when the conductive wire w is supplied to the end point of the spiral groove md, the driving of the rotating mechanism 4 is stopped, and then a welding plate (not shown) arranged between the welding grooves 8c of the press board 8b. The resin mat m is melted by heat, and the resin mat m and the conductive wire w
Weld and. This prevents the conductive wire w from floating. Incidentally, mf shown in FIG. 2 is this welded portion.

When welding is completed, air cylinder 7a and sub cylinder
Along with driving the 8a to raise the press unit 7,
Raise the welding unit 8 with respect to the press unit 7,
Then, the rotating mechanism 4 is driven to rotate the turntable 2 and the mother board 3 to a predetermined origin position.

The drive of the air cylinder 7c, the rotation mechanism 4, and the sub-cylinder 8a described above is automatically operated by the controller 13.

Finally, the conductive wire w between the resin mat m and the conductive wire supply mechanism 6 is pulled out by hand and cut by a nipper or the like to remove the resin mat m from the rotary table.

With the above, the work for one resin mat m is completed.

As described above, in the device of this embodiment, the wire guide 12 is arranged at the position where the guide pin 11 follows the guide groove 3a with respect to the resin mat m on the rotating rotary table 2, and the conductive wire w is formed. Since it is guided, even if the pitch of the spiral groove md is irregular, it can be accurately guided.

Also, when the type of the resin mat m is different, that is, when the diameter or pitch of the spiral groove md of the resin mat m is different, it is possible to deal with it by replacing only the motherboard 3, and setting only the motherboard 3. By doing so, one device can be used for all kinds of resin mats.

Moreover, since the resin mat m at the position where the conductive wire w is guided is pressed flat by the pressing plate 7d, even if the flexible resin mat m is curved or has a rugged shape, it can be accurately The conductive wire w can be guided on the spiral groove md.

In addition, in this embodiment, since the guide rod 9 as the copying member and the pressing plate 7d as the pressing means are moved up and down and pressed by one air cylinder 7c,
The structure can be simplified.

The embodiment of the present invention has been described in detail above with reference to the drawings.
The specific configuration is not limited to this embodiment, and the present invention includes a design change and the like within a range not departing from the gist of the present invention.

For example, in the embodiments, the mat winding machine in which the heater unit for welding the resin mat to the conductive wire is incorporated has been shown, but such a welding mechanism may not be necessarily provided.

Further, in the example, the mat winding machine capable of automatically performing the process of welding the conductive wire with the heater unit is shown, but the process of automatically winding up the conductive wire is performed to perform the process of welding the conductive wire. You may make it manually.

(Effects of the Invention) As described above, in the mat winding machine of the present invention, the mother board having the guide groove and the rotary table on which the resin mat is installed are installed side by side on the base, and the guide groove is formed. A copying member having a tracing guide pin and a wire guide for guiding the conductive wire is movably provided on the base, and a pressing means for pressing the conductive wire guided on the resin mat and the spiral groove from above is provided in the vicinity of the wire guide. Since it is a simple mechanism, the wire guide is always arranged at the position on the spiral groove corresponding to the position of the guide groove into which the guide pin is inserted. The conductive wire can be reliably guided, and the conductive wire can be accurately guided on the spiral groove without being affected by scratches, etc. Moreover, the diameter and pitch of the spiral groove can be controlled by one device. Different The effect that it can be applied to multiple types of resin mats can be obtained. Furthermore, since the conductive wire is guided to a position near the flat part of the resin mat by the pressing means, the resin mat may be curved or uneven. The effect that the conductive wire can be accurately guided on the spiral groove is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a mat winding machine of an embodiment of the present invention, FIG. 2 is a plan view showing a resin mat, FIG. 3 is a sectional view showing the resin mat, and FIG. Is a side view showing a wire guide and a pressing plate which are main parts of the winding machine, FIG. 5 is a plan view showing a press board which is a main part of the winding machine, and FIG. 6 is an explanatory view of a conventional example. is there. 1 ... Base 2 ... Rotating table 3 ... Motherboard 3a ... Guide groove 4 ... Rotating mechanism 6 ... Conductive wire supply mechanism 7d ... Pressing plate 9 ... Guide rod 10 ... Slide guide (guide support means) ) 11 ... Guide pin 12 ... Wire guide m ... Resin mat md ... Spiral groove w ... Conductive wire

Claims (1)

[Claims] 1. A rotary table rotatably provided on a base for setting a resin mat having a spiral groove formed therein, and a rotary table provided on the base alongside the rotary table and having the same center as the spiral groove of the resin mat. It is supplied from a mother board having a guide groove formed in a spiral shape of a locus, a rotating mechanism for synchronously rotating the rotary table and the mother board, a guide pin insertable into the guide groove of the mother board, and a conductive wire supplying mechanism. A copying member provided with a wire guide formed so as to be able to guide a conductive wire on the resin mat, a guide support means for movably supporting the copying member with respect to a base, and a position provided near the wire guide. And a pressing unit that presses the conductive wire and the resin mat, which are guided onto the spiral groove, from above.