JPH0157564B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting left and right shoe shapes of a shoe body to be processed in a shoe making machine.

When manufacturing leather shoes, the outer edge of the lower surface of the shoe body is polished along the glue 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. As a result, the surface needs to be roughened and brushed. As shown in FIGS. 1 and 2, there are several types of polishing devices in shoe making machines that carry out this process. Among these, the one shown in Fig. 1 electrically or mechanically detects the outer shape of a molded material having substantially the same planar shape as the sole member with respect to a fixed shoe body a set on a table. , b are 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, in order to polish the outer edge c of the lower surface of one shoe body a of a pair of left and right shoe bodies a, the two brushes b and b, which rotate in different directions, are moved in the axial direction. Since the polishing is performed by rotating the two brushes b and b, there is a drawback that the brushes of the two brushes b tend to rotate in one direction.

As described above, the polishing apparatus shown in FIG. 1 requires two motors for rotationally driving the two brushes b, b, and therefore has a complicated structure and a large number of parts, resulting in high costs. Moreover, there is a technical requirement to control the rotational speeds of the two motors, respectively.

In another conventional device shown in FIG. 2, the shoe body a fixed to the setting table is rotated 180 degrees in a horizontal plane with respect to the brush b ₁ which is rotated in one direction. The inside and outside are polished separately. However, in the conventional polishing device with the structure shown in Fig. 2, the brush b ₁ rotates in one direction, so the brush b 1 rotates in one direction, so the brush b 1 rotates in one direction.
It was necessary to provide a means to remove the curly texture of _b1 .

In addition, the right and left shoe bodies a have a substantially symmetrical structure, and there is a difference in position, so it is not suitable for polishing the left and right shoe bodies, respectively, using the same setting table, the same brush, and the same motor. If forced to do so, the yield will be poor and the cost will be high.

As described above, there is no conventional polishing device that rotates a single motor controlled by a computer in forward and reverse directions to clamp a pair of left and right shoe bodies on the same processing table to polish the outer edge of the lower surface.

The present invention has been made in view of the above-mentioned points, and its purpose is to distinguish the shoe shape of either the left or right shoe body simply by clamping either the left or right shoe body on the same table. To provide a shoe making machine capable of highly responsive and highly accurate polishing of the outer edges of the lower surfaces of a pair of left and right shoe bodies without turning up, making it possible to produce products with high precision and a good yield. be.

The details of one embodiment of the present invention are shown in FIGS. 3 to 7 below.
This will be explained according to the diagram.

In this embodiment, the table 1 basically moves back and forth.
A shoe body 3 for processing, either left or right, which is placed on a set mold 2 erected above with the outer edge of the lower surface facing upward; and a toe of the shoe body 3 erected on the table 1. a toe support member 4 for supporting the heel part 3a of the shoe body 3; and a recess 5a for accommodating the heel part 3a of the shoe body 3; The heel accommodating material 5 is disposed in the center of the plane so as to sandwich the heel accommodating material 5 and the heel portion 3a of the shoe body 3, and a pair of clamping arms 6, 6 having substantially the same shape are provided on the outside of the heel accommodating material 5. The shaft portion 7a can be opened and closed freely.
A clamp 8 is pivotally supported by 7b, and 1
A driving means 9 for driving the pair of clamping arms 6, 6 in the closing direction, a tension spring 10 stretched between the rear ends of the clamping arms 6, 6, the two shaft parts 7a,
It is formed from two rotary encoders 11a and 11b as electrical detection means for respectively detecting and encoding the rotation angle of rotation angle 7b. As the driving means 9, for example, a bidirectional air cylinder 12 is used.
a, 12b are arranged in parallel, this air cylinder 12
The rear sides of the clamping arms 6, 6 are pushed apart by cylinder rods 13a, 13b of a, 12b, respectively, against the tensile force of the tension spring 10.

14 is a pair of clamping arms 6 of the clamp 8;
A pair of presser members are rotatably supported by a shaft 15 inside the tip of each of the presser members 14, 6.
Reference numeral 14 indicates that when the pair of clamping arms 6, 6 are used to clamp the heel portion 3a of the shoe body 3, the outer shape of the shoe body 3 is different between the inner side _3b1 and the outer side _{3b2 of the} outer edge of the lower surface of the shoe body 3. , 1 centered around the shaft parts 7a and 7b
This is because the amount of rotation of each of the pair of clamping arms 6, 6 is different. 16 is an air supply to the upper surface of the clamp 8.
It is a slide presser that can be moved forward and backward by the driving force of a cylinder 17. After the slide presser 16 clamps the shoe body 3 from the left and right sides with the clamp 8, it advances to the upper surface of the heel portion 3a of the shoe body 3 and presses the heel portion 3a. This is to suppress the top surface. Reference numeral 18 denotes an elevating rod to which the set mold 2 is attached, and as the elevating rod 18 ascends or descends, it clamps the shoe body 3 clamped by the clamp 8 from above and below in cooperation with the slide presser 16. It is for fixing.

Reference numeral 19 denotes a brush having raised groups on its circumferential surface made of a rigid material such as wire.
9 divides the outer edge of the lower surface (upper part in the drawing) corresponding to the gluing allowance of the shoe body 3 into an inner side 3b ₁ and an outer side 3b ₂ with the longitudinal center line A as a boundary, and rotates the shoe body 3 in the normal or reverse direction. This is for polishing the glue allowance in step 3. 20 is equipped with a motor 21 as a drive source for driving the brush 19 in the forward and reverse directions.
The polishing unit is a polishing unit that is movable in the Y-axis direction Y perpendicular to the table 1, which is movable in the same horizontal plane, and the motor 21 is modeled after one of the shoe bodies 3, for example, the right shoe body 3. The rotation direction is controlled based on one piece of incorporated data. The rotation of the motor 21 is caused by the motor shaft 21a.
The brush 19 is transmitted from the pulleys 22, 23, 24 to the miter gearbox 26 via a belt 25, and further rotates via a pulley 27, a belt 28, and a pulley 29. Reference numeral 30 denotes a motor as a drive source for moving the table 1 on which the clamp 8 and the setting mold 2 are mounted in the X-axis direction.
A screw rod 33 was rotated via a coupling ring 32 installed on the screw rod 33, and a hold nut 34 screwed onto the screw rod 33 was fixed to the lower surface of the table 1 for movement in the X-axis direction. This causes the table 1 to reciprocate in the X-axis direction. Further, the table 1' on which the polishing unit 20 is mounted is similarly driven back and forth in the Y-axis direction by transmitting the driving force of the motor 30' to the screw rod 33' and the hold nut 34' via the coupling 32', for example. Ru. Note that the means for reciprocating the table 1 in the X-axis direction and the reciprocating means for reciprocating the table 1 in the Y-axis direction described above are examples, and are not limited thereto.

One embodiment of the present invention has the above-mentioned configuration, and in order to polish a pair of shoe bodies 3, 3, for example, the left shoe body 3 is placed on a set mold 2 on a table 1.
be crowned first. Next, when a power button, a set button, etc. provided on a switch panel (not shown) is pressed, the slide presser 16 moves forward to the upper surface of the clamp 8. Thereafter, the air cylinder 18a is actuated to raise the lifting rod 18 having the set mold 2 on which the shoe body 3 is placed, so that the shoe body 3 is held between the slide presser 16 and the set mold 2 from above and below. Next, the air cylinders 12a, 12b are actuated and the pair of cylinder rods 13a, 13b extend outward against the tension of the tension spring 10, so that the pair of clamping arms 6 are moved around the two shafts 7a, 7b. , 6 are closed to clamp the heel portion 3a of the shoe body 3. In this case, a pair of clamping arms 6, 6
The rotary encoders 11a and 11 have different rotation angles of the shaft parts 7a and 7b that respectively fix the rotary encoders 11a and 11.
b, directly detects and encodes the signal, processes this signal with a computer, and compares the difference in rotation angle between the two to determine which one of the left and right shoe shapes of the pair of shoe bodies 3, 3. Determine whether After that, the motor 21 of the polishing unit 20 is driven and the motor shaft 21a rotates, so the motor shaft 21
The pulley 22 installed in a and the pulley 2 in the rear stage
3. The driving force from the motor 21 is transmitted to the belt 25. The driving force from the belt 25 is transmitted to the miter gearbox 26 via the pulley 24, and further transmitted to the pulley 27, belt 28, and pulley 29, so that the brush 19 rotates in the normal direction.
On the other hand, the table 1 that clamps the shoe body 3 to the set mold 2 is driven by a motor 30 whose speed and direction are controlled by a computer, and is screwed through a coupling 32 mounted on its output shaft 31a.
The rod 33 rotates within the holding nut 34 and thus moves forward. Therefore, the outer edge of the lower surface of the shoe body 3, which is clamped to the set mold 2 on the table 1 by the above-mentioned operation, corresponds to the gluing margin, for example, from the toe part of the outer side _3b2 to the heel part, with the center line A in the longitudinal direction of the plane as a boundary. 3
Since it is polished by the brush 19 from the outside toward the inside toward a, turning up is prevented.
When the brush 19 finishes polishing up to the center of the heel 3a on the outer edge of the lower surface of the shoe body 3, the motor 21 is reversed under the control of the computer, the brush 19 is reversed, and the screw rod 33 is removed through the coupling 32. As it rotates, table 1 moves backward. Therefore, the inner side _3b1 of the outer edge of the lower surface of the shoe body 3 clamped on the table 1 is polished from the outside to the inside.

When the polishing work of the outer edge of the lower surface of the shoe body 3 is completed in this way, the cylinder rods 13a, 13b of the air cylinders 12a, 12b are contracted, and the pair of clamping arms 6, 6 are pivoted by the tensile force of the tension spring 10. The distal end side opens centering around the parts 7a and 7b, and the clamp of the shoe body 3 is released. After the elevating rod 18, which has the set mold 2 on its upper end on which the shoe body 3 is placed, descends to a predetermined height, the air cylinder is depressurized and the heel housing member 5 retreats, and the air cylinder 1
7 is depressurized, the slide presser 16 retreats from the upper surface of the clamp, and the polishing work of the left shoe body 3 is completed.

Also, when polishing the right shoe body 3, the slide presser 16 is first moved forward onto the clamp 8 in the same manner as described above. Next, the heel portion 3a of the shoe body 3
is clamped by a pair of clamping arms 6, 6 of the clamp 8, the difference in rotation angle of the shaft parts 7a, 7b which pivotally support the pair of clamping arms 6, 6 is encoded by rotary encoders 11a, 11b. The computer calculates the difference in rotation angle and determines that it is the right shoe body 3 based on the difference in position with the left upper 3. Then, after the lifting rod 18 with the set mold 2 at its upper end is raised, the brush 1 is removed.
9 rotates forward and backward, and the table 1 on which the polishing unit 20 is mounted moves back and forth, thereby completing the polishing work on the outer edge of the lower surface of the right shoe body 3.

In this way, the polishing work of the pair of left and right shoe bodies 3, 3 can be performed.

Although this embodiment has been described with reference to a case in which it is applied to a polisher for shoe bodies, in this embodiment, a pair of shoe bodies 3, 3 and a sole member (not shown) are bonded together after polishing the shoe bodies. 1 pair of shoes 3, 3
It can also be applied to a gluing machine for applying adhesive to the outer edge of the lower surface of the machine, and a primer processing machine for spraying adhesive from a nozzle.

Further, in the above embodiment, the displacement of the opening/closing movement of the pair of clamping arms 6, 6 of the clamp 8 is electrically detected by the rotary encoders 11a, 11b through the change in the rotation amount of the shaft portions 7a, 7b serving as rotation axes. However, other detection means include using a variable resistor or using a magnetic scale to detect changes in the amount of magnetism, and converting it into an amount of electricity. Unlike mechanical detection means that mechanically detects the displacement of the opening/closing movement of the pair of clamping arms 6, 6, the displacement of the opening/closing movement can be detected accurately and with high responsiveness. In addition to being able to detect quickly, the detector itself is compact, requiring less installation space, and does not require any parts such as links for motion transmission, so it can be assembled easily and without any effort. Further, in the above embodiment, the left and right detection of the outer edge of the lower surface of the shoe body has been described, but the present device can also be used to detect the left and right sides of a finished shoe.

As described above, the present invention includes 1 constituting the clamp.
Since an electrical detection means is connected to the shaft that serves as a rotating shaft for pivotally supporting the pair of clamping arms, it is possible to detect whether the shoe shape of the left or right shoe body is opened or closed on the same table. Since the displacement of the movement amount can be electrically detected through rotational changes of the respective rotating shafts, it is possible to detect and discriminate with high precision and good responsiveness, and the number of parts is small. Then, based on this signal, one processing data modeled on one shoe shape on the right side or the left side is corrected downward, and the brush drive motor is rotated forward and backward with respect to the longitudinal center line of the shoe body, so that the motor is constantly moved out. Since the rotation can be controlled inward from the inside, polishing of the outer edges of the lower surface of both the left and right shoe bodies can be done without turning up, and the bristles of the brush can be polished and processed with high precision without getting any curls due to unidirectional polishing. Products with good yield can be obtained.

[Brief explanation of drawings]

1 and 2 are plan views showing two examples of a polishing device in a conventional shoe making machine, and FIG. 3 shows an example of a device for detecting left and right shoe shapes of a shoe body in a shoe making machine according to the present invention. FIG. 4 is a partially cutaway front view; FIG. 5 is a front view of the left-right detection device of this embodiment installed in a shoe-making machine;
FIG. 6 is a side view, and FIG. 7 is a plan view illustrating the polishing order of the outer edge of the lower surface of the shoe body. 1,1'...Table, 2...Set type, 3...
...Shoe body, 3a... Heel part, 4... Toe support material, 5
...Heel accommodation material, 6...Pinching arm, 7a, 7b...
...Shaft portion, 8...Clamp, 9...Driving means, 10
...Tension spring, 11...Rotary encoder, 12a, 12b...Air cylinder, 13a,
13b...Cylinder rod.

Claims (1)

[Claims] 1 A clamp that pivotally supports a pair of clamping arms that can be opened and closed by the driving force of a driving means so as to clamp the heel of the shoe body, and a left and right shoe shape based on the amount of movement of the clamping arms of the clamp. A shoe-shaped left and right detection mechanism for detecting the left and right shoes is provided on the table, and the outer edge of the lower surface of the shoe body is polished and processed by rotating and driving a brush based on the detection of the left and right shoes by the left and right detection mechanism. The shoe making machine is provided with an electric detection means for detecting the opening/closing movement of the pair of clamping arms through rotational changes of the respective rotating shafts, and for discriminating between left and right shoe shapes. Based on the signal detected by the detection means, the rotation direction of the brush drive motor is divided into two parts based on one processing data modeled on one right or left shoe shape, with the longitudinal center line of the shoe body as the border. This shoe making machine is electrically controlled so that the outer edges of the lower surfaces of the left and right shoe bodies are constantly polished and processed from the outside to the inside by rotating the inside and outside of the shoes in forward and reverse directions.