JP2022185290A - Coating peeling device - Google Patents

Abstract

To provide a coating peeling device which can excellently remove peeling debris even during peeling of insulation coating of a rectangular wire.SOLUTION: A coating peeling device (1) comprises: a punch (2) which has a peeling blade (22); a die (3) which has a support surface (31) supporting a rectangular wire (8) and an insertion hole (32) of the punch (2); a clamper (4) which has a support surface (41) sandwiching the rectangular wire (8) with the support surface (31) of the die (3) and an insertion hole (42) of the punch (2); and a first air supply part (5) which has a first air path (51) jetting the air from the clamper (4) and a second air path (52) jetting the air from the punch (2) via the clamper (4). The air is jetted from the second air path (52) in such a state that the punch (2) is inserted to the insertion hole (32) of the die (3) in order to peel the insulation coating of the rectangular wire (8) by the punch (2).SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present disclosure relates to a coating stripping device, for example, a coating stripping device for stripping an insulating coating of a rectangular wire.

A general coating stripping apparatus, for example, as disclosed in Patent Document 1, inserts a pair of punches into an insertion hole of a clamper and an insertion hole of a die in a state in which a rectangular wire is sandwiched between a clamper and a die. , the insulating coating of the rectangular wire is stripped by stripping blades provided on opposite sides of each punch.

At this time, it is necessary to remove the peeled dust such as the peeled insulating coating so that the peeled dust does not adhere to the rectangular wire when the insulating coating of the rectangular wire is next peeled off. Therefore, the film peeling device of Patent Document 1 supplies air to the support surface by flowing air along the Coanda surface that is continuous with the support surface that supports the rectangular wire in the die, while sucking air from the insertion hole of the die. It is configured to

JP 2019-115937 A

The applicant has found the following problems. In the coating stripping device of Patent Document 1, when the punch is inserted into the insertion hole of the die to strip the insulation coating of the rectangular wire, the gap between the punch and the insertion hole of the die is closed, and air is released from the supporting surface of the die. It becomes difficult to flow into the insertion hole. Therefore, the coating stripping device of Patent Document 1 may not be able to remove the stripping dust satisfactorily during the stripping of the insulating coating of the rectangular wire.

The present disclosure has been made in view of such problems, and realizes a coating stripping apparatus capable of satisfactorily removing stripped debris even during stripping of an insulating coating of a rectangular wire.

A coating stripping device according to an aspect of the present disclosure is a coating stripping device for stripping an insulating coating of a rectangular wire,
a punch having a stripping blade for stripping the insulation coating of the rectangular wire;
a die having a support surface for supporting the flat wire and an insertion hole into which the punch is inserted;
a clamper having a support surface for sandwiching the flat wire together with the support surface of the die, and an insertion hole into which the punch is inserted;
A first air path for ejecting air from the clamper, and a second air path for ejecting air from the tip side of the punch toward the peeling blade of the punch via the clamper. an air supply unit of
with
Air is ejected from the second air path while the punch is inserted into the insertion hole of the die in order to strip the insulation coating of the rectangular wire by the punch.

In the coating stripping apparatus described above, the first air path is
an air ejection port formed in a surface of the clamper facing the die;
an air passing portion formed in the clamper and connected to the air ejection port;
is preferably provided.

In the coating stripping apparatus described above, the second air path is
a first air ejection port formed in the clamper;
a first air passing portion formed in the clamper and connected to the first air ejection port;
an air supply port formed in the punch and communicating with the first air ejection port when the punch is inserted into the insertion hole of the die;
a second air ejection port formed in the punch;
a second air passing portion formed in the punch and connected to the air supply port and the second air ejection port;
is preferably provided.

In the coating stripping apparatus described above, the first air ejection port is formed on the peripheral surface of the through hole of the clamper,
It is preferable that the air supply port of the punch is formed in a side surface of the punch facing the first air ejection port when the punch is inserted into the through hole of the clamper.

In the film peeling apparatus described above, it is preferable that the air supply port of the punch has a counterbore extending in the moving direction of the punch.

The film stripping device described above includes a second air supply unit that supplies air to the insertion hole of the die,
The second air supply unit is
a venturi section formed in the die;
A Coanda surface formed on the peripheral surface of the insertion hole of the die and continuous with the venturi portion;
has
It is preferable that the air that has entered the insertion hole of the die from the clamper side is drawn in to the side opposite to the clamper side by the Coanda effect of the air flowing along the Coanda surface.

It is preferable that the coating stripping apparatus described above include an air suction section that sucks air that has entered the insertion hole of the die.

Advantageous Effects of Invention According to the present disclosure, it is possible to realize a coating stripping device capable of satisfactorily removing stripped debris even during stripping of an insulating coating of a rectangular wire.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the basic structure of the film peeling apparatus of embodiment. It is a perspective view which shows the punch of the film peeling apparatus of embodiment. It is a perspective view showing a clamper of the film peeling device of the embodiment. FIG. 10 is a diagram showing the first air supply unit in the initial state in which the punch is arranged on the Z-axis + side, in the film peeling device of the embodiment; FIG. 10 is a diagram showing the first air supply unit in a peeling state in which the punch is arranged on the Z-axis − side in the film peeling device of the embodiment; FIG. 4 is a diagram showing an air supply port, a second air ejection port, and a second air passing portion formed in the punch in the film peeling device of the embodiment; It is a figure which shows the 2nd air supply part and air suction part of the film peeling apparatus of embodiment.

Hereinafter, specific embodiments to which the present disclosure is applied will be described in detail with reference to the drawings. However, the present disclosure is not limited to the following embodiments. Also, for clarity of explanation, the following description and drawings are simplified as appropriate.

First, the basic configuration of the film peeling apparatus of this embodiment will be described. FIG. 1 is a perspective view showing the basic configuration of the coating stripping apparatus of this embodiment. In the following description, a three-dimensional (XYZ) coordinate system is used for clarity of description.

The coating stripping apparatus 1 of the present embodiment is suitable for stripping part of the insulating coating of a rectangular wire in which a conductive member such as copper is coated with an insulating coating such as enamel resin. The coating stripping apparatus 1 includes a pair of punches 2, a die 3 and a clamper 4, as shown in FIG.

FIG. 2 is a perspective view showing a punch of the film peeling device of this embodiment. A pair of punches 2 peel off the insulating coating of the rectangular wire. The pair of punches 2 are movable in the Z-axis direction, and are spaced apart in the Y-axis direction as shown in FIGS.

The punch 2 has, for example, a substantially quadrangular prism shape as a basic form, and the Z-axis-side portion of the surface facing the other punch 2 is on the opposite side to the other punch 2 side as it goes toward the Z-axis-side. It is formed on an inclined surface 21 directed toward .

A peeling blade 22 is provided on the surface of the punch 2 facing the other punch 2 on the Z-axis + side with respect to the inclined surface 21 . The Z-axis − side end of the peeling blade 22 is inclined, for example, toward the Z-axis − side as it goes toward the X-axis + side.

The die 3 supports the rectangular wire when stripping the insulating coating from the rectangular wire. The die 3 has a support surface 31 and a pair of insertion holes 32, as shown in FIG. The support surface 31 is formed on the Z-axis + side surface of the die 3 and extends in the X-axis direction.

The support surface 31 is, for example, a flat surface substantially parallel to the XY plane so as to be in substantially surface contact with the Z-axis-side surface of the rectangular wire. However, the shape of the support surface 31 can be appropriately changed according to the shape and arrangement of the rectangular wire.

The insertion hole 32 penetrates the die 3 in the Z-axis direction. The punch 2 is inserted into each insertion hole 32 to guide the punch 2 . Therefore, the insertion hole 32 has, for example, a substantially rectangular shape corresponding to the peripheral shape of the punch 2 near the peeling blade 22 when viewed from the Z-axis direction. At this time, the pair of insertion holes 32 are arranged so as to sandwich the support surface 31 in the Y-axis direction.

FIG. 3 is a perspective view showing the clamper of the coating stripping apparatus of this embodiment. The clamper 4, as shown in FIG. 1, is arranged on the +Z-axis side with respect to the die 3 and is movable in the Z-axis direction. The clamper 4 clamps the rectangular wire together with the die 3 when stripping the insulating coating of the rectangular wire.

The clamper 4 has a support surface 41 and a pair of insertion holes 42, as shown in FIG. The support surface 41 is formed at a position facing the support surface 31 of the die 3 on the Z-axis-side surface of the clamper 4, and extends in the X-axis direction.

The support surface 41 is, for example, a flat surface substantially parallel to the XY plane so as to be in substantially surface contact with the Z-axis + side surface of the rectangular wire. However, the shape of the support surface 41 can be appropriately changed according to the shape and arrangement of the rectangular wire.

The insertion hole 42 penetrates the clamper 4 in the Z-axis direction. The punch 2 is inserted into each insertion hole 42 to guide the punch 2 . Therefore, the pair of insertion holes 42 are arranged so as to substantially overlap the insertion holes 32 of the die 3 when viewed from the Z-axis direction.

The insertion hole 42 has, for example, a substantially rectangular shape corresponding to the peripheral shape of the punch 2 in the vicinity of the peeling blade 22 when viewed from the Z-axis direction. At this time, the pair of insertion holes 42 are arranged so as to sandwich the support surface 41 in the Y-axis direction when viewed from the Z-axis direction.

In such a coating stripping apparatus 1, a pair of punches 2 are moved to the Z-axis - side in a state in which a rectangular wire is sandwiched between the supporting surface 31 of the die 3 and the supporting surface 41 of the clamper 4, thereby opening the insertion hole of the die 3. 32 and the insertion hole 42 of the clamper 4, the stripping blade 22 of the punch 2 scrapes off the insulating coating of the rectangular wire, thereby stripping the insulating coating of the rectangular wire.

Next, in the coating stripping apparatus 1 of the present embodiment, a mechanism for removing stripped debris generated when stripping the insulating coating of the rectangular wire with the stripping blade 22 of the punch 2 will be described. FIG. 4 is a diagram showing the first air supply section in the initial state in which the punch is arranged on the Z-axis + side most in the film peeling apparatus of the present embodiment. FIG. 5 is a diagram showing the first air supply section in the peeling state in which the punch is arranged on the Z-axis − side in the film peeling apparatus of the present embodiment. FIG. 6 is a diagram showing an air supply port, a second air ejection port, and a second air passing portion formed in the punch in the coating stripping apparatus of the present embodiment. FIG. 7 is a diagram showing the second air supply section and the air suction section of the coating stripping apparatus of the present embodiment.

Here, in FIG. 4 and the like, some members are omitted so as not to complicate the drawing. 4 and 5, the punch 2 and the rectangular line 8 are indicated by imaginary lines (two-dot chain lines).

In addition to the configuration described above, the coating stripping apparatus 1 includes a first air supply section 5, a second air supply section 6, and an air suction section 7, as shown in FIGS. The first air supply unit 5 includes a first air path 51, a second air path 52, and an air supply device 53, as shown in FIGS.

A first air path 51 is a path for ejecting air from the clamper 4 . In this embodiment, as shown in FIG. 3 and the like, a pair of first air paths 51 are formed in the clamper 4 . However, the number of first air paths 51 may be one or three or more.

The pair of first air paths 51 are arranged, for example, on the X-axis + side of the clamper 4 and on the X-axis so as to be point-symmetrical about a predetermined point on the clamper 4 when viewed from the Z-axis direction. - located on the side part and Here, in order to omit redundant description, the first air path 51 on the + side of the X axis will be described as a representative.

As shown in FIG. 3 and the like, the first air path 51 includes an air ejection port 51a, an air supply port 51b, and an air passage portion 51c. The air ejection port 51a is formed on the surface of the clamper 4 on the Z-axis - side. The air ejection port 51a may be arranged near the insertion hole 42 in the support surface 41 of the clamper 4, for example.

However, the air ejection port 51a is formed in the clamper 4 so that air can be ejected near the support surface 31 of the die 3 in the initial state where the punch 2, which will be described later, is arranged on the Z-axis + side. It is good if there is

The air supply port 51b is formed on the surface of the clamper 4 on the X-axis + side. The air passage portion 51c connects the air ejection port 51a and the air supply port 51b. However, the arrangement of the air supply port 51b and the air passage portion 51c is not limited to that described above, and may be arranged so as to allow air to flow into the air ejection port 51a.

The second air path 52 is a path for ejecting air from the punch 2 via the clamper 4 . In this embodiment, a pair of second air paths 52 are formed in the punch 2 and the clamper 4, as shown in FIGS.

For example, the pair of second air paths 52 are arranged on the X-axis + side of the punch 2 and the clamper 4 so as to be point-symmetrical about a predetermined point of the clamper 4 when viewed from the Z-axis direction. and the part on the X-axis- side. Here, in order to omit redundant description, the second air path 52 on the + side of the X axis will be described as a representative.

The second air path 52, as shown in FIGS. An air passage portion 52e is provided. The first air ejection port 52 a is formed on the side surface of the +X-axis side of the insertion hole 42 on the +Y-axis side of the clamper 4 .

As shown in FIG. 3, the first air passage portion 52b branches off from the air passage portion 51c of the first air path 51, and connects the air supply port 51b of the first air path 51 and the second air path. 52 is connected to the first air ejection port 52a.

As shown in FIGS. 2 and 6, the air supply port 52c is formed on the side surface of the +X-axis side of the punch 2 on the +Y-axis side. At this time, the air supply port 52c is preferably formed with a counterbore (that is, a recess) 52f.

The counterbore portion 52f extends in the Z-axis direction. For example, as shown in FIG. In addition, the first air ejection port 52a and the counterbore portion 52f are arranged so as to maintain an overlapping state when viewed from the X-axis direction.

For example, the counterbore portion 52f is formed in the first direction from when the peeling blade 22 of the punch 2 reaches the Z-axis + side surface of the die 3 when viewed from the X-axis direction until the punch 2 moves to the Z-axis − side. It is preferable that they are arranged so as to maintain a state of overlapping with the air ejection port 52a.

As shown in FIGS. 2 and 6, the second air ejection port 52d is formed on the Z-axis − side of the peeling blade 22 on the Y-axis − side of the punch 2 on the Y-axis + side. there is The second air ejection port 52d may be arranged, for example, on the +Z-axis side of the inclined surface 21 of the punch 2 on the +Y-axis side. That is, the second air ejection port 52d is preferably arranged in the vicinity of the Z-axis -side end of the peeling blade 22 of the punch 2 on the Y-axis +side.

As shown in FIG. 6, the second air passage portion 52e connects the air supply port 52c and the second air ejection port 52d. However, as will be described later, when the punch 2 moves in the Z-axis direction in order to peel off the insulation coating of the rectangular wire 8, the second air path 52 is not directed to the peeling blade 22 of the punch 2. It is only required that a path for ejecting air from the Z-axis negative side be secured. Also, the number of second air paths 52 may be one or three or more.

The air supply device 53 includes a compressor and the like, and is connected to the air supply port 51b of the first air path 51 as shown in FIG.

The second air supply section 6 supplies air to the insertion hole 32 of the die 3, as shown in FIG. The second air supply section 6 includes a venturi section 61 , a Coanda surface 62 and an air supply device 63 .

The venturi portion 61 is formed in the die 3 , and one end of the venturi portion 61 reaches the insertion hole 32 of the die 3 . That is, the venturi portion 61 is a narrowed portion of the air passing portion 64 formed in the die 3 .

The Coanda surface 62 forms a surface on the Z-axis side of the portion of the air passage portion 64 on the side of the insertion hole 32 of the die 3, and is continuous from the venturi portion 61 on the side of the insertion hole 32 of the die 3. It gently curves toward the Z-axis - side as it goes.

The air supply device 63 includes a compressor and the like, and is connected to the end of the air passage portion 64 opposite to the insertion hole 32 side of the die 3 . The air suction unit 7 has a vacuum pump or the like, and is connected to, for example, the insertion hole 32 of the die 3 in order to suck the air inside the insertion hole 32 of the die 3 toward the Z-axis - side.

Next, the flow of stripping the insulating coating of the rectangular wire 8 using the coating stripping apparatus 1 of the present embodiment will be described. Here, while the insulating coating of the rectangular wire 8 is peeled off, air is supplied from the air supply device 53 of the first air supply section 5 and air is supplied from the air supply device 63 of the second air supply section 6. It shall be Also, it is assumed that air is being sucked from the air sucking portion 7 .

First, as shown in FIG. 4, an initial state is assumed in which the punch 2 and the clamper 4 are arranged on the Z-axis + side. At this time, as shown in FIG. 4, there is a gap between the surface of the die 3 on the positive side of the Z axis and the surface of the clamper 4 on the negative side of the Z axis. The air supplied from the first air path 51 is ejected near the support surface 31 of the die 3 from the air ejection port 51a through the air supply port 51b and the air passage portion 51c.

At the same time, the air supplied from the air supply device 63 of the second air supply section 6 is favorably drawn into the venturi section 61 from the air passing section 64 by the venturi effect of the venturi section 61 . Then, by the Coanda effect of the air flowing along the Coanda surface 62 and the suction effect of the air suction part 7, the air that has been jetted near the support surface 31 of the die 3 and entered the insertion hole 32 is moved to the Z-axis direction. Pull to the - side.

In this way, the air flow to the insertion hole 32 of the die 3 is generated, and the drawing of the air from the support surface 31 of the die 3 to the insertion hole 32 is generated. Delamination debris at the time is removed satisfactorily from the periphery of the support surface 31 of the die 3 . As a result, peeling waste can be removed before and after the insulation coating of the flat wire 8 is peeled off. By the way, the peeled debris may be accommodated in an accommodating section arranged on the Z-axis - side with respect to the air suction section 7, for example.

In this state, the flat wire 8 is supported by the support surface 31 of the die 3 by bringing the flat wire 8 in substantially surface contact with the Z-axis-side surface. Then, the clamper 4 is moved to the Z-axis − side so that the Z-axis + side surface of the rectangular wire 8 is substantially in surface contact with the support surface 41 of the clamper 4 , and the support surface 31 of the die 3 and the support surface 41 of the clamper 4 are brought into contact with each other. The rectangular wire 8 is sandwiched between and supported.

Next, the punch 2 is moved to the Z-axis - side, and the stripping blade 22 of the punch 2 strips the insulation coating of the rectangular wire 8 . At this time, when the punch 2 moves to the Z-axis − side, for example, when the end of the stripping blade 22 of the punch 2 on the Z-axis − side reaches the surface of the die 3 on the Z-axis + side, as shown in FIG. At this time, the first air ejection port 52a of the second air path 52 and the counterbore portion 52f of the air supply port 52c overlap.

As a result, the air supplied from the air supply device 53 of the first air supply section 5 passes through the air supply port 51b of the first air path 51, the air passing section 51c, and the first air path of the second air path 52. The air is ejected from the second air ejection port 52d via the air passage portion 52b, the first air ejection port 52a, the air supply port 52c, and the second air passage portion 52e.

At this time, the peeled chips pushed into the Z-axis side by the peeling blade 22 of the punch 2 are separated from the Z-axis side of the peeling blade 22 on the peripheral surface of the punch 2 and the peripheral surface of the insertion hole 32 of the die 3. However, the surroundings of the peeling blade 22 of the punch 2, the insertion hole 32 of the die 3, etc. removed from As a result, peeling dust can be removed even during the process of peeling off the insulation coating of the rectangular wire 8 .

After that, the punch 2 and the clamper 4 are moved to the Z-axis - side to remove the rectangular wire 8, and the above-described flow is repeated, whereby the insulation coating of the rectangular wire 8 can be continuously peeled off.

As described above, the coating stripping apparatus 1 of the present embodiment has the first air path 51 for ejecting air from the clamper 4, and through the clamper 4, from the Z-axis − side portion of the punch 2 with respect to the stripping blade 22. and a second air path 52 for ejecting air.

Therefore, even if the air ejection port 51a of the first air path 51 is blocked by the Z-axis + side surface of the die 3 when the clamper 4 is moved to the Z-axis - side, the second air path 52 Air can be blown out, and peeling scraps can be removed even while the insulation coating of the flat wire 8 is being peeled off.

Moreover, when the counterbore 52f is formed in the air supply port 52c of the second air path 52, while the punch 2 is being moved to the Z-axis - side, air is continuously discharged from the second air ejection port 52d. can be ejected, and the peeled debris can be removed satisfactorily.

Further, when the coating stripping apparatus 1 includes the second air supply unit 6, the air inside the insertion hole 32 of the die 3 can be discharged satisfactorily by the Venturi effect and the Coanda effect of the second air supply unit 6. It is possible to improve the efficiency of removing peeled debris.

The present disclosure is not limited to the above embodiments, and can be modified as appropriate without departing from the spirit of the present disclosure.

For example, although the film peeling device 1 of the above embodiment includes the air suction unit 7, it may be omitted. In this case, the Coanda effect of the Coanda surface 62 of the second air supply unit 6 generates an air flow toward the Z-axis − side, and the air flow toward the Z-axis − side from the insertion hole 32 removes the peeled debris to the third can be removed from the perimeter of the support surface 31 of the .

REFERENCE SIGNS LIST 1 film peeling device 2 punch 21 inclined surface 22 peeling blade 3 die 31 support surface 32 insertion hole 4 clamper 41 support surface 42 insertion hole 5 first air supply section 51 first air path 51a air Jet port 51b Air supply port 51c Air passage portion 52 Second air path 52a First air jet port 52b First air passage portion 52c Air supply port 52d Second air jet port 52e Second 2 air passage portion 52f counterbore portion 53 air supply device 6 second air supply portion 61 venturi portion 62 Coanda surface 63 air supply device 64 air passage portion 7 air suction portion 8 flat wire

Claims (7)

A coating stripping device for stripping an insulating coating of a rectangular wire,
a punch having a stripping blade for stripping the insulation coating of the rectangular wire;
a die having a support surface for supporting the flat wire and an insertion hole into which the punch is inserted;
a clamper having a support surface for sandwiching the flat wire together with the support surface of the die, and an insertion hole into which the punch is inserted;
A first air path for ejecting air from the clamper, and a second air path for ejecting air from the tip side of the punch toward the peeling blade of the punch via the clamper. an air supply unit of
with
A film stripping device, wherein air is ejected from the second air path in a state in which the punch is inserted into the insertion hole of the die in order to strip the insulating film of the rectangular wire by the punch. The first air path is
an air ejection port formed in a surface of the clamper facing the die;
an air passing portion formed in the clamper and connected to the air ejection port;
The film stripping device according to claim 1, comprising: The second air path is
a first air ejection port formed in the clamper;
a first air passing portion formed in the clamper and connected to the first air ejection port;
an air supply port formed in the punch and communicating with the first air ejection port when the punch is inserted into the insertion hole of the die;
a second air ejection port formed in the punch;
a second air passing portion formed in the punch and connected to the air supply port and the second air ejection port;
The coating stripping device according to claim 1 or 2, comprising: The first air ejection port is formed on the peripheral surface of the through hole of the clamper,
4. The air supply port of the punch according to claim 3, wherein the punch is inserted into the through-hole of the clamper and formed on a side surface of the punch facing the first air ejection port. Film stripping device. 5. The coating stripping apparatus according to claim 3, wherein the air supply port of said punch has a counterbore extending in the moving direction of said punch. A second air supply unit that supplies air to the insertion hole of the die,
The second air supply unit is
a venturi section formed in the die;
A Coanda surface formed on the peripheral surface of the insertion hole of the die and continuous with the venturi portion;
has
6. Any one of claims 1 to 5, wherein the air that has entered the insertion hole of the die from the clamper side is drawn to the side opposite to the clamper side by the Coanda effect of the air flowing along the Coanda surface. The film stripping device according to . 7. The coating stripping apparatus according to claim 1, further comprising an air suction unit for sucking air that has entered the insertion hole of the die.

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