JPH0157565B2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a shoe making machine.

When manufacturing leather shoes, the outer edge of the lower surface of the shoe body is polished along the adhesive margin in order to make it easier to adhere to the sole member as a pre-process for bonding the shoe body consisting of the upper and heel to the sole member. It is necessary to roughen the surface and apply a brushed finish. Conventional polishing devices in shoe making machines that perform this processing are, for example, those shown in Figures 1 and 2.
There are several as shown in the figure. Among these, the one shown in FIG. 1 electrically or mechanically detects and traces the outer shape of a molded material that has substantially the same planar shape as the sole member against a fixed shoe body a that has been set, and uses two brushes b, b is moved in the longitudinal direction of the shoe body a to polish the outer edge c of the lower surface to make the surface rough. However, in this conventional device, for example, when polishing the outer edge c of the lower surface of one shoe body a, the polishing is performed from one direction using two brushes b, b rotating in different directions. The problem was that it had a tendency to rotate in one direction.

As described above, the polishing device shown in Fig. 1 requires two brushes b, b and two motors to rotate them, so the structure is complicated and the number of parts increases, resulting in high cost. There is a technical requirement to control the rotational speed of each motor.

In addition, as another conventional device shown in FIG. 2, a shoe body A fixed on a table is rotated by 180 degrees in a horizontal plane with respect to a brush b ₁ which is rotated in one direction. and the outside are polished respectively. However, in the conventional polishing device having the structure shown in FIG. 2, the brush b ₁ rotates in one direction, so it is necessary to provide a means for removing the curls of the brush b ₁ due to friction with the shoe body a. Furthermore, centering (setting the center position) when rotating the shoe body a by 180 degrees in a horizontal plane was difficult.

In addition, although the shoe body a has a nearly symmetrical structure on the right and left sides, there are errors in size and shape, so the same table,
It is not suitable for polishing the left and right shoe bodies using the same brush and the same motor, and if forced to do so, the yield rate will be poor and the cost will be high.

In this way, conventional polishing machines do not operate a single motor controlled by a computer in the forward and reverse directions to clamp and brush a pair of left and right shoe bodies on the same table.

The present invention has been made in view of the above points, and its purpose is to process one machining data for controlling the rotational speed of a motor by computer control without using a profile material. By rotating the motor for driving the brush as a tool in the forward and reverse directions at a predetermined position relative to the shoe body, and constantly rotating the brush from the outside to the inside, the number of parts is reduced, the cost is reduced, and the brush as a processing tool can be used as a processing tool. To provide a shoe making machine capable of producing products with high precision and good yield without curling up by polishing the outer edge of the lower surface of a shoe body without causing any curls in the nap.

The details of one embodiment of the present invention are shown in FIGS. 3 to 8 below.
A case where the present invention is applied to a polishing device will be explained according to the figure.

This embodiment is basically equipped with a clamping mechanism 2 that clamps the shoe body 1 at the set position, and the shoe body 1 is divided into two parts, an inner side 1a and an outer side 1b, separated by a bisecting line A in the axial direction. A polishing unit 6 is formed of a motor 3 that rotates in different directions so as to be rotated or reversed, and a polishing brush 5 rotatably attached to the tip of a support arm 4; A Y-axis moving table 9 that is swingably fixed by a swing shaft 7 facing in the X-axis direction X and movable in a direction orthogonal to the X-axis moving table 8 in the same horizontal plane; and the brush 5. and a drive means 37 that determines the installation height of the brush 5 relative to the shoe body 1 by rotating the brush 5 around the swing shaft 7.

Reference numeral 11 denotes a set mold for covering the shoe body 1, and this set mold 11 extends over the base 12 in the X-axis direction.
A lifting rod 13 is installed on the upper surface of the X-axis direction moving table 8, which is freely movable, and at the upper end of an elevating rod 13, which is movable up and down. Reference numeral 14 denotes a toe support member erected on the upper surface of the X-axis direction moving table 8, and this toe support member 14 is for supporting the toe portion of the shoe body 1 clamped by the clamp mechanism 2 described later. . The clamp mechanism 2 has a recess 15a for accommodating the heel portion 1c of the shoe body 1, and has a heel accommodating member disposed at substantially the same height as the toe support member 14 and spaced apart from each other in the axial direction. 15 and the shoe body 1
A pair of clamping arms 17a and 17b having substantially the same shape and having the heel accommodating member 15 disposed at the center so as to clamp the heel part 1c of the heel accommodating member 15 and pivotally fixed to the outside thereof by shafts 16a and 16b so as to be freely openable and closable; The clamping arm 17a, 1
a driving means 18 for driving the clamping arm 1;
Tension spring 1 stretched between the rear ends of 7a and 17b
9, and rotary encoders 20a and 20b that respectively detect and encode the amount of torque due to the difference in rotation angle of the two shaft portions 16a and 16b. The drive means 18 has, for example, two-way air cylinders 21a and 21b arranged side by side, so that cylinder rods 21a ₁ and 21b ₁ in the air cylinders 21a and 21b drive the rear sides of the clamping arms 17a and 17b, respectively. Said tension spring 1
It is designed to expand against the tension of 9.
Reference numeral 22 denotes a pair of presser members rotatably fixed by a shaft 23 inside the tips of the clamping arms 17a, 17b. Reference numeral 24 denotes a slide presser which can be moved forward and backward by the driving force of the air cylinder 25, and this slide presser 24 is connected to the pair of clamping arms 17a,
17b extends to the upper surface of the heel portion 1c of the shoe body 1 before clamping the heel portion 1c of the shoe body 1, and presses the upper surface of the heel portion 1c.

26 is a drive means for reciprocating the X-axis direction moving table 8 in the X-axis direction, that is, in the longitudinal direction of the shoe body 1; this drive means 26 is fixed to the upper surface of the base 12, on one side The driving force of the motor 27 is transmitted from the motor shaft 27a through the coupling 28 to rotate the coaxial screw rod 29, and the hold nut 30 screwed onto the screw rod 29 is moved to the X-axis direction moving table 8. By being fixed to the lower surface of the X-axis direction moving table 8, the X-axis direction moving table 8 is reciprocated in the X-axis direction. Note that the reciprocating movement of the table 8 in the X-axis direction described above is merely an example, and is not limited to what is illustrated.

The polishing unit 6 is a support frame erected in front of the Y-axis moving table 9 which is movable on the base 12 in the Y-axis direction Y perpendicular to the X-axis moving table 8 in the same horizontal plane. 31 and
A movable frame 32 having a substantially L-shaped cross section is swingably attached to the support frame 31 about the swing shaft 7 disposed in the X-axis direction, and an upper surface of one side of the movable frame 32 at a less sensitive position. The motor 3 for rotating a brush as a processing tool fixed to the
a transmission means 34 for transmitting the output from the output shaft 3a to a subsequent mechanical section including a miter gearbox 33 as a power conversion mechanism; and the movable frame 32.
a polishing brush 5 flexibly mounted on the tip of a support arm 4 protruding from the installation side of the shoe body 1;
A swinging shaft 35 that is perpendicular to the lower center of the swing shaft 7 and rotatably penetrates the movable frame 32.
A neutral level is set as a reference level in order to determine the installation height of the brush 5, which supports one end of the shaft 35 and is rotatably attached to the tip of the support arm 4 about the swing shaft 7, with respect to the shoe body 1. point 36, and the brush 5 is pushed up higher than this reference level, or the installation height of the brush 5 is lowered than the neutral point 36, and the inner side 1a and the outer edge of the lower surface of the shoe body 1 are 1b
a pair of air cylinders 38a, 38b as a driving means 37 for polishing the shoes; It is formed from a balancing weight 39 suspended from the top.
Further, the transmission means 34 is the output shaft 3 of the motor 3.
The pulley 40 installed on a and the miter gear
An intermediate pulley 42 is installed between a pulley 41 installed on the input shaft 33a of the box 33, and is wound between the pulleys 40 and 41 to transmit the output from the motor 3 to the miter gear box 33. a pulley 44a installed on the output shaft 33b of the miter gear box 33, a pulley 44b installed on the mounting shaft 44c of the brush 5,
Furthermore, it is formed from the pulley 44b and a belt 45 wound around the pulley 44a. Further, the two air cylinders 38a and 38b are the seventh air cylinders 38a and 38b.
As shown in Figure A, when the brush 5 is located at the neutral point 36, only the cylinder rod 38a1 of the upper air cylinder 38a is extended, and the cylinder rod _38b1 of the lower air cylinder _38b is contracted. When the brush 5 is located at a position 36A above the neutral point 36, the upper and lower air cylinders 38a and 38b are
The cylinder rods 38a ₁ and 38b ₁ are extended. Further, when the brush 5 is located at a position 36B below the neutral point 36, the cylinder rods 38a ₁ and 38b ₁ of the upper and lower air cylinders 38a and 38b are both contracted, as shown in FIG. 7C.
Also, an air cylinder 38a for raising and lowering the shaft 35,
38b is used to raise and lower the brush 5 with good responsiveness. Reference numeral 46 denotes a driving means for pushing up the shaft 35 in order to separate the brush 5 from the shoe body 1 as necessary during polishing, and this driving means 46 includes the driving means 37.
Two air cylinders 47a, 47b having the same structure as
is used.

and the cylinder of the upper air cylinder 47a.
When only the rod _47a1 is extended, the shaft 35 is located at the neutral point, and the upper and lower air cylinders 47
Two cylinder rods 47a ₁ , 4 a and 47b
When _7b1 is extended, the shaft 35 is located above the neutral point, and the air cylinders 47a, 4
When the two cylinder rods 47a ₁ and 47b ₁ of the cylinder 7b are retracted, the shaft 35 is positioned below the neutral point. Further, the motor 3 for rotating the brush 5 is controlled by a computer so that the direction of rotation is continuously rotated in the forward direction or in the reverse direction with respect to the bisecting line A in the longitudinal direction of the central axis of the shoe body 1. . The Y-axis direction moving table 9 also has a motor 48.
The holding nut 50, which is screwed into the screw rod 49 which is rotated by the output of the holding nut 50, is fixed to the lower surface of the movable table 9, and the holding nut 50 is moved back and forth. This reciprocating movement of the moving table 9 in the Y-axis direction is also an example, and is not limited to what is illustrated.

One embodiment of the present invention has the above-described configuration, and in order to polish a pair of left and right shoe bodies 1, 1 using the apparatus of this embodiment, for example, the right shoe body 1 is
is placed on the set mold 11 on the X-axis direction moving table 8. Next, when a power button, a set button, etc. provided on a switch panel (not shown) is pressed, the slide presser 24 moves forward to the upper surface of the clamp mechanism 2. After that, the air cylinder 13a is operated to lift the lifting rod 1 having the set mold 11 on which the shoe body 1 is covered.
3 rises, the shoe body 1 is moved by the slide presser foot 24.
and the set mold 11 from above and below, and then the air cylinders 21a and 21b are actuated to cause the pair of cylinder rods 21a ₁ and 21b ₁ to release the tension spring 1.
9, a pair of clamping arms 1 are formed around the two shafts 16a and 16b.
When the distal ends of 7a and 17b are closed, the heel part 1 of the shoe body 1 is closed.
Clamp c to determine the set position.
In this case, since the rotation angles of the shaft portions 16a and 16b that respectively fix the pair of clamping arms 17a and 17b are different, the rotary encoder 20
a, 20b, this input signal is processed by a computer, and the difference between the two is compared with one processed data below, thereby creating a pair of shoe bodies 1,
It is determined whether it is either the left or right of 1.
After that, the output shaft 3a of the motor 3 of the polishing unit 6
As the motor 3 rotates, the output of the motor 3 is transmitted to the input shaft 33a of the miter gearbox 33 by a belt 43 via a pulley 40 and an intermediate pulley 42 mounted on the output shaft 3a. Further, the output from the output shaft 33b of the miter gearbox 33 is transmitted to the pulley 44a, belt 45, and pulley 44b, causing the brush 5 to rotate in the normal direction.

Thereafter, the X-axis moving table 8, which clamps the shoe body 1 to the set mold 11, is moved to an output shaft 27a via a coupling 28 by a motor 27 whose speed and rotation direction are controlled by a computer.
The screw rod 29, which is disposed coaxially with the screw rod 29, rotates within the hold nut 30 and moves forward in the X-axis direction. Also, by driving a motor 48 whose speed and rotation direction are controlled by a computer,
The output of this motor 48 is transmitted to the screw rod 49 and rotates, so that the Y-axis moving table 9, which is screwed onto the screw rod 49 and has a hold nut 50 on its lower surface, clamps the shoe body 1. It is movable in the Y-axis direction within the same horizontal plane relative to the X-axis direction moving table 8.

In addition, the output rods 38a ₁ and 38b ₁ of the two air cylinders 38a and 38b are penetrated into the movable frame 31 by repeating the expansion and contraction operation in small steps as shown in FIG. 7A, B, and C, respectively. Since the shaft 35 is initially pushed up from the neutral point 36 as a reference level or its support height is lowered, the movable frame 31 swings around the swing shaft 7 to adjust the installation height of the brush 5 relative to the shoe body 1. is determined.
Therefore, the outer edge portion of the lower surface of the shoe body 1 is polished from the toe portion toward the heel portion 1c on the outer side 1b with the center axis length direction bisecting line A as a boundary. When the outside 1b of the outer edge of the lower surface is polished up to the heel 1c, the motor 3 is reversed, the direction of rotation of the brush 5 is reversed, and the motor 27 is also reversed, so that the X-axis direction moving table 8 is moved backward. Further, the movement of the Y-axis direction moving table 9 in the Y-axis direction is repeated by driving the motor 48. Therefore, the inner side 1a of the outer edge of the lower surface of the shoe body 1 is polished from the heel 1c toward the toe, with the central axis bisecting line A as the boundary. At this time, when it is not necessary to polish, for example, the heel part 1c of the outer edge of the lower surface of the shoe body 1, such as a woman's high heel, two cylinder rods 47a ₁ of the two air cylinders 47a and 47b are used. , 47b ₁ are both extended and the shaft 35 is pushed up, so that the brush 5 is lifted from the shoe body 1, so that the heel portion 1c of the shoe body 1 is not polished. In this case, the non-polishing distance of the shoe body 1 can be easily adjusted by adjusting the pushing up time to the shaft 35. Further, the motor 3 for rotating the brush 5 is rotated forward and reverse with respect to the bisecting line A in the axial direction of the shoe body 1, thereby polishing the inner side 1a and the outer side 1b of the shoe body 1 from the outside to the inside. The outer edge of the lower surface of the shoe body 1 is prevented from rolling up due to friction with the brush 5 during polishing. Moreover, the brushing of the brush 5 itself does not have any peculiarities.

When the polishing work of the outer edge of the lower surface of the shoe body 1 is completed in this way, the cylinder rods 21a ₁ and 21b ₁ in the air cylinders 21a and 21b are contracted, so that the pair of clamping arms 17a and 17b are pulled by the tension spring 19. The tip side opens centering on the shaft parts 16a and 16b due to the force, and the clamp of the shoe body 1 is released. After the elevating rod 13 having the set mold 11 on which the shoe body 1 is placed at the upper end and the elevating rod of the toe support 14 have descended to a predetermined height, the air cylinder is depressurized and the heel accommodating material 15 is moved back. Moreover, since the air cylinder 25 is depressurized, the slide presser foot 24 retreats from the upper surface of the clamp 2, and the shoe body 2
1 polishing work is completed.

Also, when polishing the left shoe body 1, the slide presser 24 is first moved forward onto the clamp 2 in the same manner as described above, and then the heel portion 1c of the shoe body 1 is held between the pair of clamping arms 17a of the clamp 2. , 17b. A shaft portion 16 that pivotally supports the pair of clamping arms 17a and 17b
The magnitude of the torque due to the difference in the rotation angle of the shoes a and 16b is encoded by the rotary encoders 20a and 20b, and the signals are processed by a computer to determine the difference between the shoe body 1 on the right and the shoe body 1 on the left. determine that. Furthermore, in the above description, the pair of clamping arms 17a and 17b of the clamp mechanism 2 are
The displacement of the opening/closing movement of rotary encoder 1
0a and 10b are electrically detected to determine whether it is the left or right shoe body 1 or 1, but other detection means include using a variable resistor or using a magnetic scale to measure the electrical quantity. It may also be converted. Then, the elevating rod 13 having the set mold 11 at the upper end moves up and the X-axis moving table 8 moves back and forth, and the Y-axis on which the polishing unit 6 is mounted is moved relative to the
The axially movable table 9 moves forward or backward in the Y-axis direction within the same horizontal plane, and the brush 5 rotates forward or backward, thereby performing polishing work on the outer edge of the lower surface of the left shoe body 1.

In this way, the polishing work of the pair of left and right shoe bodies 1, 1 can be performed.

Furthermore, in the above embodiment, the outer edge of the lower surface of the shoe body 1 is polished with the brush 5 in the direction of the arrow shown in FIG. If there is a difference in the polishing process, the brush 5 is reversed at a position corresponding to that of the previous embodiment, so that the shoe body 1 is polished in a direction opposite to the direction of the arrow in FIG.
It is also possible to re-polish the entire circumference of the outer edge of the lower surface or a portion of the required portion, for example, the front half.

Furthermore, although this embodiment also describes the case where it is applied to a shoe body polishing machine, in this embodiment, a pair of shoe bodies 1, 1 and a sole member are bonded together after the shoe body polishing operation. It can also be applied to processing machines for bottom members, such as a gluing machine used to apply adhesive to the outer edge of the lower surface of parts 1 and 1, and a primer processing machine used to spray adhesive from a nozzle.

As described above, the present invention does not use a pattern material as a template, but simply provides machining data for one shoe body to a computer, and the rotation direction of the motor for driving the brush as a machining tool can be set at a predetermined position relative to the shoe body. By rotating the brush in the forward and reverse direction, always brush from the outside to the inside.
To polish the outer edges of the lower surfaces of a pair of shoe bodies with high accuracy without causing any curling up, and to obtain a product with a high yield. In addition, since the number of motors for driving the processing tool is smaller than in conventional polishing devices, the number of parts can be omitted and costs can be reduced. Moreover, since the polishing brush used as a processing tool is rotated forward or reverse at a predetermined position, it does not get bent and its lifespan is extended.

[Brief explanation of drawings]

1 and 2 are plan views showing two examples of polishing devices in conventional shoe making machines, FIG. 3 is a partially sectional side view showing an embodiment of the present invention, and FIG. 4 is a diagram showing the entire device. 5 is a side view, FIG. 6 is a plan view showing an example of the clamp mechanism constituting this embodiment, and FIG. Fig. 3 is a cross-sectional view showing the operating state of the air cylinders in series, of which A is a cross-sectional view showing the neutral position where only the cylinder rod of the upper air cylinder is extended, and B is a cross-sectional view showing the cylinder rod of the upper and lower air cylinders in the neutral position. 8 is a sectional view showing the extended state, C is a sectional view showing the cylinder rods of the upper and lower air cylinders are both retracted, and FIG. 8 is a plan view illustrating the polishing sequence of the shoe body. 1...Shoe body, 1a...Inside, 1b...Outside,
1c...Heel part, 3...Motor, 4...Support arm, 5...Brush, 7...Swing axis, 9...Y
Axial movement table, 33...miter gearbox, 34...transmission means, 35...shaft, 40,4
1, 42, 44a, 44b, 44c...Pulley,
43, 45... Belt, A... Bisector line in the longitudinal direction of the center axis.

Claims (1)

[Claims] 1. A brush as a processing tool is provided on the shoe body so as to be movable in the X-axis direction and in the Y-axis direction perpendicular to the X-axis direction in the same horizontal plane, and the brush is installed parallel to the X-axis direction. The shaft is swingably fixed by a drive means in the Z-axis direction perpendicular to the swing axis, and the rotation direction of the drive motor of the brush is divided into two with a bisecting line in the longitudinal direction of the central axis of the shoe body as a border. This shoe making machine is characterized in that the outer edge of the lower surface of the shoe body is constantly polished and processed from the outside to the inside by rotating the inside and outside of the shoe body in forward or reverse rotation under computer control.