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Description of the Invention In the speaker cone cutting device, a soft material adapter having a
core boss inserted into the neck portion of the cone material and a flange for receiving a partial
inner surface is attached to the turntable surface. An adapter is provided to cover the cone
material, and a rotatable pressing member for elastically pressing the outer surface of the neck
portion and the flare is disposed, and held by the pressing member and the adapter. A cutting
means is provided which is made close to and separated from the opening periphery of the cone
material and the neck portion, and an ear portion connected to the periphery of the cone
material rotated by the turntable and a predetermined position of the neck portion Speaker cone
cutting device configured to cut simultaneously.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutting device
for shaping the outer periphery and neck portion of a speaker cone sheet (including cone sheets
of various materials). It is well known that the process of cutting the ear portion remaining on
the opening periphery of the pre-press-formed cone material and the cylindrical neck portion at
the conical end is included in the production line of the cone speaker. Therefore, til in FIG. 1
shows a cone material, as schematically described with reference to FIG. 1 and FIG. An ear (3)
and a cylindrical neck (4) with a rounded back end at the conical end are formed on the outer
circumference of the frame. Therefore, it is a shaping process that this cone material (cut the ear
(17k of 17 (17k and cut the neck (4) from the predetermined position, and the processing
sequence can be made from the cutting of the ear (31 as an example) . That is, in the figure, (5) is
a cylindrical upward total force cutter fixed to a table surface or the like, (6a) is disposed at the
central portion thereof and inserted into the neck portion t47 ′ ′ of the cone material tll. The
female fixing member made of soft material (synthetic resin, etc.), (6b) shows a plug member of
the same EndPage: 1 material, and the appropriate cross-sectional shape of both members (6a),
(6b) and total force cutter ( Select the relevant dimensions including the setting of the cutting
edge diameter and so on, and position the root portion of the ear portion (3) to be cut of the cone
material il + on the circular cutting edge of the total power cutter (5) as shown. (7) shows a
pressing tool which is moved up and down corresponding to the total power cutter (5), which is
an upper plate (7a) fixed to a shaft (8) or the like linked with appropriate vertical movement
means and its lower surface The pressure member (7) is lowered by the rubber plate (7b)
(pressure-contacting plate), and the above-mentioned ear portion (31 is placed between the
cutting edge of the total force cutter (5J and the rubber plate (7b) It is supposed to drop 9 times.
In addition, (9) in the figure shows a ring-shaped stripper (flying up damper) disposed close to
the inner periphery of the total power cutter (5). Further, in FIG. 2, a portion indicated by a
rotating shaft is connected to the drive source. 41G shows a boss provided at the upper end of
the boss 41. The boss Q (I is attached with a core member a such as rubber to be inserted tightly
into the neck portion 4 of the cone material 1) The blade tip of a sharp thin plate blade U such as
a razor blade fixed to the lever α) is brought into contact with, and separated from, a
predetermined position of that phase. Cut the cone material (11 is inverted and its neck +47 is
covered on the core member 0, and the rotation axis (1 (1 for example, while rotating clockwise),
the neck + 41t − cut off by thin plate) The Boon 14 N material (II's shaping process is
As described above, since the conventional process of cutting the cone paper is performed in two
steps, it is not a fool that removal and installation of the cone material required for each process
is troublesome, and the total strength cutter and thin plate blade gradually deteriorate in
sharpness. If it comes to the number, it is natural to replace them, and the quality of the cut
surface changes in the initial stage of cutting by the same cutter and immediately before the
exchange, and for the same reason, the pressure plate of FIG. Since the core members in the
figure must often be replaced, and furthermore, the cutting edge of the total power cutter and
the thin plate blade is sharp, there are many disadvantages such as danger in operation. The
present invention has been made in view of the above-mentioned problems, and an object thereof
is to propose a speaker cone sheet cutting apparatus which can greatly improve the conventional
processing problems of this type. A specific example of the device of the present invention will be
described below with reference to the drawings. FIG. 3 is a front elevational view partly in
longitudinal section showing the main part of the embodiment. In the figure (14 is a cutting
device as a whole, a substrate held at a height of four, 1 old is, for example, three columns
extending upward from a position near the periphery on this substrate, (1l is each column A top
plate fixed to the upper end of αe, (A tuft indicates a lift plate moving up and down with each
column as a guide, and this lift plate ■ is moved up and down by an air cylinder o mounted on
the top plate a η ing. Is the piston rondo. 2) indicates a turntable disposed at substantially the
center of the substrate αω, 4 indicates a rotary shaft integrated with it, 2 indicates the rotary
shaft is supported by a bearing (3), and the lower surface side of the substrate uS For example,
the belt is driven by a speed reducer-equipped motor @ which is protruded to the lower surface
of the substrate and attached via a bracket or the like. And, the surface of the turntable + 211
and the neck portion (core boss (2) to be inserted into the neck portion 41 of the cone material
(see FIG. 1) and the flange receiving the inward direction of the flare portion (2) An adapter (of
rubber, synthetic resin, etc.) having an adapter is attached, and the upper edge of the flange C2 &
is made into a chamfer with a predetermined angle, and this chamfer (support) is covered As a
soft cloth (for example, flannel) or the like, a case sheet (29a) is attached. In addition, ti shows a
rotating shaft pulley,-shows a motor gory, and □□□ shows a belt. The lifting plate (cone
material (II pressing means is provided on the side of the field) corresponding to the adapter rod
of the turntable 4 as described above. As a member constituting this pressing means, a neck
press ω of soft material having a recess for pressing the upper surface of the neck portion of the
cone material 111 put on the adapter 4, a flare press Releg 0, and these members 9 Between the
adapter 4 and the cone material (11, it is made to rotate with the adapter while holding it.
That is, there is provided a slide ma21 for rotatably supporting the neck retainer 2 at its lower
end, and this slide shaft wedge is fitted within the three EndPage: 2 sleeves attached to the center
of the F plane of the lift plate +119. It is elastically biased downward and can be moved up and
down by a stone stroke within the sleeve. On the other hand, the lower surface of the presser
ring 6v is a chamfer 9 concave surface 6fJ which is substantially matched with the flange
chamfered portion (2) of the adapter 2. The concave surface is a housing similar to the adapter
sheet (29a). A sheet (29b) is attached, and the face of the pressing ring 6 is a U-shaped recess
formed by the lower flange (31a) and the upper flange (31b) (separate member in the example),
and a cone material flare is formed in this recess. A plurality of, for example, 34 m, rollers are
positioned in rolling contact with the surface of the lower flange (31a) when a part is held down,
for example, L-shaped The slide shaft is attached to the lower end of the slide shaft which has the
same structure as in the case of the piece r3aVi of the neck, and the same as in the case of the
neck retainer 2, and therefore both are elastically biased downward. The upper 7 rungs (31b)-of
the presser ring are for pulling up and holding the entire ring 'up to the up position. As apparent
from the above, as the lift plate α is moved up and down by the air cylinder 4, the cone material
(17 is rotated between the neck presser and the press ring 6 and the adapter 15 in the case of
the camf In the state of (1e), stopper collars for restricting the descent limit of the elevator plate
α are adjustably provided at predetermined positions of the columns (1e). By the way, in the
case of the present example, a portion of the substrate α 9 is provided with an ear portion (3 j
(see FIG. 1) of the cone material) of a cone material cutting mechanism C37. The outline of this
mechanism is a base plate (d) that can be adjusted in position '1 m in the radial direction of the
turntable C11l, and a rotating plate (4Q1) rotatably mounted on the base plate via a pivot (d).
Shearing cutter t43 driven by a motor with a reduction gear (4υ, this motor @ 1) attached to the
rotation plate and rotation * ([t-air cylinder I (reciprocately rotates in one direction) 4). There are
various possibilities for the position AM means of the base plate (d), but in the example, a long
hole (44) is formed along a width line passing through the axis 0 of the substrate usK vs. Shaft
14 integrated with the base plate in this long hole!
19 and the pace plate 81'fr after positioning as required on the above-mentioned stripe line, it is
designed to fix the base plate by tightening the 44 screwed in the screw of the shaft weight.
There is. Therefore, although it is not shown, it is a common practice to provide guide members
or the like for moving the base plate on the both sides of the base plate, and to attach a kind of
fine adjustment structure or stopper as necessary. Is also easily considered. In addition, the
rotary plate (41 has two bearing plates (46a), (46) facing each other at the right end and has a
predetermined line on a vertical line passing substantially the center of these bearing plates. A
pair of cutter shafts (47a) and (47b) are inserted at an inter-axial distance of between, and
engaged with gears (48a) and (48b) 'of the same diameter attached to the respective cutter shafts
between the two bearing plates The cutter shaft (47a) is driven counterclockwise by a motor (4D
1), and the r-sub cutter shaft (47b) is synchronously rotated clockwise ································ Cutting
rollers (42a) and (42b) are attached to the free ends of the ka, -14 □ 39 and (47b) to contact
substantially one point of the front and rear phase edges, and constitute a shearing cutter (6).
The above-mentioned air cylinder (c) has its rod 14j connected to, for example, the projection of
the rear part of the rotating plate-to urge the air cylinder (c) to withdraw the rod. The pivoting
root of the virtual line position can be turned to the solid line position about the center, and
eventually the shearing cutter 1L can be displaced on a radial line passing through the axis O of
the rotation axis @. In addition, although (3) shown by a virtual line in FIG. 4 is an ear of a cone
material, the shearing cutter cuts from the relief state of-at the time of cutting become. (4(!
Shows a stopper screw provided on the rising piece of the base plate (or the base plate) in order
to regulate the rotation plate-O rotation angle. In FIG. 3, 4 indicates a rotary cutter located on the
right side of the neck retainer 3 in the state of the figure, and this cutter has, for example, a
trapezoidal cross-section and its lower edge is a sharp blade, which rotates vertically It is
attached to a shaft 6υ (cutter shaft). The motor 63 is a motor with a reduction gear for driving
the ah rotary cutter, and this motor 63 is configured to enter and exit in the left-right direction as
an EndPage: 3 guide between guide shafts provided on the lower surface side of the lift plate Q8.
And the above-mentioned cutter shaft 6 'are connected via a pair of bevel gears (b), and the
motor 54 is set to rotate the rotary cutter group counterclockwise, and this cutter also has left
and right with the motor 6'. Of course, the stroke or motor (the movement range of the 5'IJ,
particularly the position of forward movement) is accurately regulated by means other than that
shown, although it is of course advanced and retracted in the direction.
Then, an air cylinder (G) is disposed on the upper surface of the lift plate α, and the motor 154
is moved in and out in the left-right direction as described above through a link connected to the
rod d. The apparatus of the present embodiment configured as described above, as is already
apparent, is to simultaneously cut and shape the ear portion (31 and the neck portion (47 of the
cone material tll) of the cone material tll. Attach the cone material (1) to the cone, and then raise
and lower the plate QIt-lower, the adapter @, the neck retainer ■ and the flare retainer ring 6 フ
レ ア to make the flare part (2) of the cone material (1) 4) are elastically held (see FIG. 5). Next,
while driving the motor, (41) and-, the air cylinder C 謙 is driven in a defined sequence to enter
the cutting operation, but the shearing cutter 饅 is as described above. The rotary cutter group is
also lowered to the predetermined cutting position of 4J, and its cutting edge penetrates into the
neck part plane, and the rotary cutter group is also lowered to the predetermined position. Take
the form of the figure. That is, it can be easily understood that the cone material (the ear portion
(3) of the II and the neck portion 4) is simultaneously cut when the turntable + 211 makes one
rotation in such a state. Thus, according to the apparatus of the present invention, not only can
this type of shaping, ie cutting of the ears and neck of the cone material, can be performed
simultaneously, but also the shearing cutters (4 邊 and rotary cutters as shown in the example)
are arranged. The direction of rotation of each cutter in the cutting portion, the ear of the cone
material, and the neck is tangent to the forward direction, and the peripheral speed of the cutter
is appropriately selected for the rotation of the turntable. And a uniform cut surface can be
obtained (however, the cutting blade itself is not specified). In addition, by using the cutting
means as illustrated, since the deterioration of the sharpness is less, it is possible to greatly
reduce the number of man-hours required for replacing the blade, the pressure plate and the
core member as before, and to improve the operation hazard. In general, this type of shaping
operation can be streamlined, and its practical effect is remarkable.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are longitudinal cross-sectional views
of the main parts for explaining conventional cone material shaping processing, and FIG. 3 is a
schematic partial longitudinal front view showing an example of a cutting apparatus according to
the present invention. Fig. 4 is a plan view showing an example of a shearing cutter mechanism,
and Fig. 5 is a longitudinal sectional view of an essential part for explaining a cutting operation.
11J is a cone material, (2) is a flared part, (3) an ear part, (4) a neck part, Q41 is the whole
cutting apparatus, al is a substrate, a fight is a top plate, a weir is a lifting plate, four,噌 and は
are air cylinders, D D is a turntable, 囚, 0 υ and Q is a motor, ■ is an ADAGETA-1 @ core boss,
(2) is 7 runes, ■ is a neck retainer, 01) is a presser ring, 67 Is a cutting mechanism, (42 is a
shearing cutter, and a scissors is a rotary cutter. Patent Applicant Sony Corporation Atsushi Ito
EndPage: 4