JP3414088B2 - Clamping device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device for holding a funnel-shaped component, and more particularly to an automatic winding device for winding a thin wire on a funnel-shaped bobbin. And a suitable clamping device.

[0002]

2. Description of the Related Art A cathode ray tube (CR) of a television receiver
A horizontal deflection coil is attached to the neck portion of T).
The horizontal deflection coil is typically configured as a saddle type coil and has a winding frame (bobbin) made of a synthetic resin molding and a thin wire wound on the winding frame. The horizontal deflection coil is automatically manufactured by an automatic winding device.

FIG. 4 shows an example of a bobbin 10 used for a horizontal deflection coil. The reel 10 has a funnel or trumpet shape, and has a large opening portion 11, a small opening portion 12, and a funnel-shaped wall portion 13 connecting the both. The two openings 11 and 12 have a large number of claws 11a and 12a, respectively.
a is formed. A thin wire is wound around the claws 11a and 12a.

At the upper end of the funnel-shaped wall 13, that is, below the edge of the large opening 11, a pair of protrusions 10 on both sides in the diametrical direction.
A and 10B are provided. Also, the large opening 11
A pair of entwined pins 10C are provided along the ridge.

An example of a conventional automatic winding device will be described with reference to FIG. Note that this example is a Japanese Patent Application No. 6-29 filed on Nov. 7, 1994 by the same applicant as the applicant of the present application.
No. 7872 (reference number S94029742), and for details, refer to this application.

This automatic winding machine has a clamp device 20 for holding the bobbin 10. The clamp device 20 causes the bobbin 10 to have a large opening 11 as shown in FIG. It is supported vertically with the small opening 12 on the upper side and on the upper side. The clamp device 20 has a clamping device 70 for clamping the cut end of the wire.

The automatic winding machine further includes a winding supply device 30 and a winding supply device 3 for supplying the wire 9 with a constant tension.
Nozzle unit 40 for guiding the wire from 0 mainly in the vertical direction, a guide unit 50 for guiding the wire mainly in the horizontal direction, and a wire entanglement device 8 for entwining the free end of the wire with the entanglement pin 10C of the bobbin 10.
Has 0 and.

In the vertical direction as shown, ie, the bobbin 10
Z axis along the central axis of X, and X orthogonal to each other in the horizontal plane
Take an axis and a Y axis. The nozzle unit 40 has a nozzle 42 configured such that the wire 9 is inserted therethrough. The nozzle 42 is capable of linear movement in the X-axis and Z-axis directions and rotational movement about the X-axis. The guide unit 50 has a pair of guide tips 52A and 52B. The guide tips 52A and 52B are capable of linear movement in the X-axis direction and inversion movement around the Z-axis, and the tip thereof can hook a wire. Is formed in an L shape. The guide unit 50 further includes a cutter 54 for cutting the wire 9.
Have.

The operation of this automatic winding machine will be briefly described.
The wire unwound from the tip of the nozzle 42 is clamped by the clamping device 7
The cut end is clamped by 0, and in this state, the wire is entwined by the wire entwining device 80 so that the wire entwined pin 1
Entangled with 0C. Next, the wire is wound around the bobbin 10 by the three-dimensional movement of the nozzle 42 itself and the guide tips 52A and 52B, and the rotational movement of the clamp device 20 supporting the bobbin 10. The upper guide tip 52A winds the wire around the upper claw 10a, and the lower guide tip 52B winds the wire around the lower claw 10b.

The structure and operation of the conventional clamp device 20 will be described with reference to FIG. The clamp device 20 has an annular receiving base 201 for receiving the funnel-shaped winding frame 10 and a disc-shaped support plate 202 supporting the receiving base 201.
The cradle 201 has a pair of grooves 201A and 201B (only one is shown) for receiving the protrusions 10A and 10B of the reel 10.

A pair of guide plates 203 (only one of which is shown) extending in the radial direction is mounted on the lower side of the support plate 202, and a guide groove 203A extending in the radial direction is provided in the guide plate 203.
Are formed. The support plate 202 includes three support rollers 202a, 2a, which are spaced apart from each other by a central angle of 120 degrees.
02b and 202c (only two are shown) are attached.

The clamp device 20 further includes a rotatable cam plate 210, a sector gear 211 mounted on the outer periphery of the cam plate 210, a pinion 212 engageable with the sector gear 211 and movable in the radial direction, and the pinion 212. And an actuator 213 for moving in the radial direction.

FIG. 7 shows an example of the cam plate 210. Cam plate 2
Reference numeral 10 denotes a pair of linear cam grooves 210A and 210B arranged on both sides in the diametrical direction and three arc-shaped concave portions 210C which are spaced from each other at a central angle of 120 degrees along the circumferential direction,
210D and 210E. Cam groove 2 as shown
10A and 210B extend obliquely with respect to the tangential direction.

Referring again to FIG. The clamp device 20 further includes a pair of pressing blocks 204 (only one of which is shown) disposed below the cam plate 210 and movable in the radial direction. Since the two pressing blocks 204 are the same, only one of them will be described. The pressing block 204 has a pin 205, and the pin 205 is engaged with the guide groove 203A of the guide plate 203 and the cam groove 210A of the cam plate 210. The holding block 204 has a V-shaped engaging portion 204A arranged at the inner end in the radial direction, and the V-shaped engaging portion 204A is configured to engage with the lower side portion of the funnel-shaped wall 13 of the reel 10. Has been done.

Three support rollers 202 of the support plate 202
The a, 202b and 202c are arranged on the three concave portions 210C, 210D and 210E of the corresponding cam plate 210.

Next, the operation of the clamp device 20 will be described.
The protrusions 10A and 10B of the reel 10 are the grooves 2 of the cradle 201.
The reel 10 is arranged on the pedestal 201 so as to engage with 01A and 201B. The operation of the actuator 213 moves the pinion 212 inward in the radial direction and engages with the sector gear 211. Next, the pinion 212 is rotated by a drive motor (not shown), the sector gear 211 moves in the circumferential direction, and the cam plate 210 rotates.

When the cam plate 210 rotates, the pin 205 of the pressing block 204 and the guide groove 203A of the guide plate 203 are formed.
The cam engagement between the cam plate 210 and the cam groove 210A causes the pressing block 204 to move inward in the radial direction. The cam engagement between the pin 205 and the cam groove 210A generates a radially inward movement of the pressing block 204, and the cam engagement between the pin 205 and the guide groove 203A causes the pressing block 204 to move radially inward. The movement route to the direction is restricted.

Thus, the V-shaped engaging portions 204A and 204B of the pressing block 204 engage with the lower side portion of the funnel-shaped wall portion 13 of the winding frame 10.

When the cam plate 210 rotates, the three recesses 2
10C, 210D, and 210E move in the circumferential direction in a state of being engaged with the three support rollers 202a, 202b, and 202c of the support plate 202. The support plate 202 does not rotate but is configured to be movable in the vertical direction. Therefore, the three support rollers 202a, 202b, 2
02c does not rotate around the central axis of the bobbin 10 due to the movement of the three recesses 210C, 210D, 210E, but rotates about its own rotation axis on each recess 210C, 210D, 210E.

The three recesses 210C, 21 of the cam plate 210
0D and 210E are slightly inclined along the circumferential direction. Therefore, the three support rollers 202a, 202b, 2
When 02c relatively moves along the three recesses 210C, 210D, and 210E, the support plate 202 moves up.

As a result, the pedestal 201 also rises, and the pedestal 201 is engaged with a higher position of the funnel-shaped wall portion 13 of the bobbin 10. Thus, the upper side of the funnel-shaped wall portion 13 of the winding frame 10 is supported by the cradle 201, and the lower side of the funnel-shaped wall portion 13 of the winding frame 10 is supported by the V-shaped engaging portions 204A and 204B of the pressing block 204. To be done.

[0022]

In the conventional clamp device, the lower side portion of the funnel-shaped wall portion 13 of the reel 10 is supported by the pressing block 204, and at the same time, three support rollers 20 are provided.
2a, 202b, 202c and three recesses 210C, 21
The cradle 201 is moved by the cam operation between 0D and 210E.
And is configured to support the upper portion of the funnel-shaped wall portion 13 of the winding frame 10 and has a drawback that the structure is complicated and many manufacturing parts are used.

In view of the above point, the present invention has an object to provide a clamp device having a simpler concept.

In view of the above point, the present invention has an object to provide a clamp device having a smaller number of parts.

[0025]

According to the clamp device of the present invention, the clamp portion for engaging the upper portion of the funnel-shaped article at the upper end and the linear movement inclined in the radial direction with respect to the horizontal plane. A slide member movable along the path,
A cam plate rotatable with respect to the clamp portion,
When the cam plate rotates, a cam mechanism between the cam plate and the slide member causes the slide member to move along the movement path, so that a radial inner end of the slide member moves to the funnel-shaped article. It is configured to engage the lower side.

According to the present invention, the cam mechanism is constituted by cam engagement between the cam groove formed in the cam plate and the pin provided in the slide member. The cam groove is arranged so as to be inclined with respect to the tangential direction of the rotation circumference of the cam plate.

According to the present invention, the clamp portion has an engaging portion for receiving the protrusion formed on the upper portion of the funnel-shaped article. A sector gear is mounted on an outer peripheral portion of the cam plate, and the cam plate is configured to rotate by rotating a pinion engaged with the sector gear.

According to the present invention, the slide member has a V-shaped engaging portion arranged at the inner end in the radial direction and an inclined portion arranged along the movement path. The inclination angle of the moving path with respect to the horizontal plane is 5 to 10 degrees.

According to the invention, the clamping part consists of two parts arranged diametrically opposite each other.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a clamp device according to the present invention will be described below with reference to FIGS. As shown in FIG. 1, the clamp device of this example includes a pair of clamp parts 4
00, 400 and an annular portion 420. The two clamp parts 400, 400 have the same structure, and only the structure of one clamp part 400 will be described. The clamp part 400 includes a body 401 and a U-shaped engaging portion 4 arranged on the body 401.
02 and a slide member 403 extending in the radial direction.

The U-shaped engaging portion 402 is configured to receive the projecting portions 10A and 10B of the winding frame 10. Therefore, when the winding frame 10 does not have the protrusions 10A and 10B, the U-shaped engaging portion 402 may be omitted.

The slide member 403 is constructed so as to be movable in the radial direction with respect to the main body 401 and in the direction inclined with respect to the horizontal plane. Slide member 40
A V-shaped engaging portion 404 is attached to the inner end of the slide member 3, and a pin 405 is attached to an intermediate position of the slide member 403. As shown in FIG. 3, the roller 4 is attached to the lower end of the pin 405.
05a may be mounted.

The annular portion 420 has an annular base portion 421 and an annular cam plate 422 arranged outside thereof. The cam plate 422 is configured to be rotatable with respect to the base portion 421. The cam plate 422 has a pair of cam grooves 422A, 4
22B is formed, and a sector gear 423 is attached to the peripheral edge of the cam plate 422. The clamp parts 400, 400 are attached to the base part 421.

The clamp device further has a pinion 430 which is engageable with the sector gear 423 and is movable in the radial direction, and an actuator 431 for moving the pinion 430 in the radial direction.

The cam plate 422 of this example has three recesses 210C and 210C as compared with the conventional cam plate 210 shown in FIG.
The difference is that D and 210E are not provided. The cam mechanism between the cam plate 422 and the pin 405 of the slide member 403 in this example is similar to that in the conventional example.

As mentioned above, the two clamp parts 400,
400 has the same structure, and only the cam mechanism between the slide member 403 and the cam plate 422 in one clamp part 400 will be described. When the cam plate 422 rotates, the pin 405 (or the roller 405a) engaged with the cam groove 422A.
Moves along the cam groove 422.

The clamp portion 400 is fixedly mounted on the base portion 421, and the slide member 403 is attached to the main body 401.
It moves along the guide portion formed on the and while being restrained by the guide portion. That is, the slide member 403 moves along the guide portion of the main body 401 and in the movement path while being restrained by the cam operation between the pin 405 and the cam groove 422A.

The operation of the clamp device of this embodiment will be described with reference to FIG. The reel 10 is arranged on the two clamp portions 400, 400 such that the two protrusions 10A, 10B of the reel 10 engage with the U-shaped engaging portions 402, 402, respectively. Then, the actuator 431 is operated to move the pinion 430 inward in the radial direction, and the pinion 430 is engaged with the sector gear 423.

Next, the pinion 430 is rotated by a drive motor (not shown) to rotate the cam plate 422. When the cam plate 422 rotates, as described above, the cam member moves the slide member 403 inward in the radial direction, and the V-shaped engaging portion 404 engages with the lower portion of the funnel-shaped wall portion 13 of the reel 10. To do.

The structure and operation of the clamp portion 400 of the clamp device of this embodiment will be described in detail with reference to FIG. Since the two clamp parts 400, 400 have the same structure and perform the same operation, only one clamp part 400 will be described here.

FIG. 3A shows the slide member 403 in the retracted standby position, and FIG. 3B shows the slide member 403 in the advanced position in the engaged position.

As described above, the main body 4 of the clamp part 400.
01 is fixedly attached to the base portion 421 of the annular portion 420, and the U-shaped engaging portion 402 is engaged with the protruding portion 10A of the winding frame 10. The pin 405 of the slide member 403 has a roller 405a as illustrated, and the roller 405a is engaged with the cam groove 422A of the cam plate 422.

The moving path of the slide member 403 is in a vertical plane passing through the central axis O--O of the winding frame 10 as shown in the drawing and along a direction inclined with respect to the horizontal plane. The angle θ formed by the movement path of the slide member 403 with respect to the horizontal plane is set appropriately. Such an angle may be, for example, θ = 5-10 °.

The slide member 403 of this example is attached along the moving path, that is, the inclined portion 403A inclined with respect to the horizontal plane, the front end portion 403B attached to the front end of the inclined portion 403A, and the lower end of the front end portion 403B. It has a V-shaped engaging portion 404 and a pin 405 attached to the inclined portion 403A.

As shown in the figure, the clamp portion 400 of the present example has a guide member 406 for guiding the slide member 403, and the guide member 406 forms a movement path of the slide member 403.

An inclined chamfer 403C may be formed at the upper end of the front end 403B as shown in FIGS. When the slide member 403 moves in the forward direction, that is, inward in the radial direction as shown in FIGS. 3A to 3B, the front end portion of the V-shaped engaging portion 404 before contacting the funnel-shaped wall portion 13 of the reel 10. 403B, for example, a chamfer 403C abuts the funnel-shaped wall 13.

As a result, the reel 10 moves slightly upward, and the reel 10 is positioned in the vertical direction. next,
The V-shaped engaging portion 404 engages with the lower portion of the funnel-shaped wall portion 13 of the winding frame 10, and the winding frame 10 is fixed. Thus, according to this example, since the slide member 403 can move in the radial direction and incline with respect to the horizontal plane, the slide member 403 can simultaneously position and fix the reel 10 in the vertical direction. .

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to these examples, and various modifications can be made within the scope of the invention described in the claims. It will be understood by those skilled in the art.

Although in the above description the clamping device according to the invention is constructed to support the reel 10, the reel 1
0 is merely an example, and the clamp device according to the present invention can be applied to any article as long as it is a funnel-shaped member.

[0050]

The invention has the advantage that a clamping device for positioning and supporting a funnel-shaped member, for example a reel, can be constructed.

The clamp device of the present invention has an advantage that it is possible to provide a clamp device which is easy to manufacture and inexpensive because it has a simple structure and has a small number of parts.

The clamping device according to the invention has the advantage that a funnel-shaped member, for example a reel, can be quickly positioned and supported.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing a clamp device according to the present invention.

FIG. 2 is an explanatory view showing a state in which a funnel-shaped member is supported by the clamp device according to the present invention.

FIG. 3 is an explanatory diagram for explaining the operation of the clamp device according to the present invention.

FIG. 4 is a diagram showing a configuration example of a winding frame of a horizontal deflection coil.

FIG. 5 is a perspective view showing an outline of a conventional automatic winding device.

FIG. 6 is a partial sectional perspective view schematically showing a clamp device used in a conventional automatic winding device.

FIG. 7 is a diagram showing a configuration example of a cam plate of a conventional clamp device.

[Explanation of symbols]

9 wires 10 reels (bobbins) 10A, 10B protrusion 10C Entanglement pin 11 openings 11a nail 12 openings 12a nail 13 Funnel-shaped wall 20 Clamp device 30 winding supply device 40 nozzle unit 42 nozzles 50 guide unit 52A, 52B guide tip 54 cutter 70 clamping device 80 wire entanglement device 201 cradle 201A, 201B groove 202 support plate 202a, 202b, 202c Support roller 203 Guide plate 203A groove 204 holding block 204A Engagement part 205 pin 210 cam plate 210A, 210B Cam groove 210C, 210D, 210E Recess 211 sector gear 212 Pinion 213 Actuator 400 clamp part 401 body 402 engagement part 403 Slide member 403A inclined part 403B Front end 403C Chamfer 404 engagement part 405 pin 405a roller 406 Guide member 420 annular part 421 Base part 422 cam plate 422A, 422B cam groove 423 sector gear 430 Pinion 431 actuator

Claims (8)

(57) [Claims] 1. A clamp part for engaging an upper part of a funnel-shaped article at an upper end, and a slide member movable in a radial direction and along a linear movement path inclined with respect to a horizontal plane. A cam plate rotatable with respect to the clamp part, and when the cam plate rotates, the slide member moves along the movement path by a cam mechanism between the cam plate and the slide member, The clamping device is characterized in that the radially inner end of the slide member is configured to engage with the lower side of the funnel-shaped article. 2. The clamp device according to claim 1, wherein
The clamp device is characterized in that the cam mechanism is constituted by a cam engagement between a cam groove formed in the cam plate and a pin provided in the slide member. 3. The clamp device according to claim 2,
The clamp device, wherein the cam groove is arranged so as to be inclined with respect to a tangential direction of a rotation circumference of the cam plate. 4. The clamp device according to claim 1, 2 or 3, wherein the clamp portion has an engagement portion for receiving a projection portion formed on an upper portion of the funnel-shaped article. apparatus. 5. The clamping device according to claim 1, 2, 3 or 4, wherein a sector gear is mounted on an outer peripheral portion of the cam plate, and the cam plate is rotated by rotating a pinion engaged with the sector gear. A clamping device, which is configured to rotate. 6. The clamp device according to claim 1, 2, 3, 4 or 5, wherein the slide member is arranged along the movement path and a V-shaped engaging portion arranged at an inner end in the radial direction. A clamping device having an inclined portion. 7. The clamping device according to claim 1, 2, 3, 4, 5 or 6, wherein the inclination angle of the moving path with respect to the horizontal plane is 5 to 10 degrees. 8. The clamping device according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the clamping part comprises two parts arranged on both sides in the diametrical direction.