JPH07112860B2 - Loop assembly method and apparatus - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for assembling a loop made up of an inner ring and an outer ring in which a narrow member is wound around a wide member.

[Conventional technology]

Bent items are generally containers made by bending a thin plate of Ezo pine or Japanese cypress with a bottom plate of the same material, and are often used to package foods such as seafood, sushi, bento and pickles. The term "loop" often means the entire container, but in this specification, it is used as a side wall. The loop as the side wall may be formed by rolling a single strip of plate-shaped loop member, or may be doubled by winding a slightly narrower outer member on the outer side thereof.

Conventionally, in the manufacture of loops, a loop member is wound around the bottom plate to determine the size of the loop, then the bottom plate is removed, and both ends of the loop member are pressed with fingers, and It was inserted into the driving machine and the metal fittings were hammered into the core of the driving machine, and the fasteners were hammered in to complete one loop.

[Problems to be Solved by the Invention]

According to the above-mentioned conventional production of loop wheels, most of the steps are manual operations, so that the production amount per person is limited and it is not suitable for mass production.

Also, assembling often depends on the feeling of people, so
In particular, when assembling the inner ring and the outer ring, in which the narrow member is wound around the outer side of the wide member, there is a problem that the product lacks uniformity and is likely to be uneven. Further, it is difficult to perform manual work, requires skill, it is not easy to improve productivity, and defective products are likely to occur.

In view of the above-mentioned circumstances, the present invention has an object to provide a method and apparatus capable of automatically assembling a ring in which an inner ring and an outer ring are accurately aligned.

[Means for Solving the Problems]

In order to achieve the above object, the present invention is configured as follows.

1) Regarding a method of assembling a loop made up of an inner ring and an outer ring, in which a narrow member is wound around an outer side of a wide member, a lower part is made of a pair of split molds, and an insertion port for both members is provided at an upper end. A molding die having a wide groove and a narrow groove formed in the center of the width is used.
First, insert the wide member and turn it along the wide groove to stop the overlapping part where the ends are aligned with the stopper, and rotate the inner ring formed in this way to slightly shift the overlapping part,
Then, the front end of the narrow member is exposed to the insertion opening, and the inner ring is fixed with a stopper at that position, and then the inner ring is rotated, so that the narrow member is placed outside along the narrow groove. The inner ring is formed by winding and fastening the leading end of the narrow member to the base end with a stopper, and the thus assembled ring is discharged by opening the lower part of the molding die.

2) In a device for assembling a loop made up of an inner ring and an outer ring, in which a narrow member is wound around a wide member, a molding die is formed so that it can be opened and closed at the bottom, and the molding die has an upper end of the both members. Provided with an insertion opening, a wide groove and a narrow groove at the center of the width are formed on the circular inner peripheral surface, and a retraction device for rotating the wide member along the wide groove inside the molding die is provided. In addition, the feeding guide of the member and the driving machine are installed at the insertion opening so as to face each other, and the tip of the narrow member is stopped after stopping the tip of the narrow member on the inner ring formed along the wide groove. The device is configured to rotate the inner ring and form the outer ring along the narrow groove on the outer side of the inner ring.

[Action]

When assembling the loops, first insert the wide member from the insertion opening of the molding die, rotate it along the wide groove with the feeding device, and stop both ends with the driving tool at the insertion opening. By slightly shifting the pad, the overlapping portion is slightly shifted, then, by supplying a narrow member and stopping the tip of the narrow member at the inner ring at the insertion port, by rotating the inner ring by the retracting device, Since the outer ring is molded by winding a narrow member along the narrow groove on the outer side, the ring composed of the inner ring and the outer ring can be quickly and accurately assembled with the same molding die. .

〔Example〕

Next, an example in which the present invention is carried out in an automatic assembly machine for loops will be described with reference to the drawings.

The drawings show one embodiment, and the loop assembler will first be schematically described with reference to FIGS. 1 and 2.
It consists of a combination of the main device A, which is the main part of the assembly, and the suction device B of the loop member, and a pair of left and right rails 1 and 1 are installed on the main device A, and the suction device B is left and right above it. It is mounted so that it can be moved to.

As shown in FIG. 12, the loop R has a narrow member 7 incorporated on the outer side of the wide member 6, and the narrow member 7 comprises a pair of semi-thin members 7a, 7a. Therefore, the two semi-thin members 7a, 7a will be collectively referred to as a narrow member 7.

Regarding the main unit A, the base plate 3 is placed on the base 2 so as to be movable left and right by the slide base centering air cylinder 15, and the sub base plate 4 can be moved left and right by the roller centering air cylinder 16 on the base 2. It is located in
Further, on the base plate 3, a loop member supply device C is provided.
Is provided, the loop assembly device D of the present invention is provided at the front end of the supply device C, the cartridge 8 of the wide member 6 is provided at one side of the supply device C, and the semi-thin member 7a is provided at the other side. 7a
The cartridges 9a, 9a are provided side by side.

Each of the cartridges 8, 9a, 9a is formed into a deep groove by vertically arranging the plate member, and notches 10, 10 are provided at both front and rear ends of the plate member for picking up the loop member by the suction device B. In order to select the picking position, an air cylinder 11 for moving the suction device B is attached to one end.

As for picking up the loop member by the suction device B, as shown in FIG. 3, an air cylinder is attached to the substrate 5 of the suction device B.
Tentacles 13 and 14 that move up and down by 12 are hung vertically, and one tentacle 13
The suction member 85 of the wide member 6 on the other hand, and the semi-thin members 7a, 7
A sucker 86, 86 of a is provided.

Further, the tentacles 13 and 14 are provided with a coil spring 18 that constantly urges the suction cups 85 and 86 downward, and a proximity switch 19 that senses that the suction cups 85 and 86 come into contact with another object. In other words, when the suction cups 85, 86 are pushed up against the elasticity of the coil spring 18, the proximity switch 19 detects this.

Further, for the tentacles 14 of the semi-thin members 7a, 7a, an air cylinder 21 for adjusting the distance between the suction cups 86, 86 is provided.

In the supply device C, an upright plate 23 is fixed to the base plate 3, a conveying path 24 and a drive device 25 are provided on the upright plate 23, and a holding device 26 for a loop member and a restricting device 27 for the narrow member 7 are provided. And are provided.

The transport path 24 is provided with a guide groove 32 into which the wide member 6 and the narrow member 7 are dropped in the receiving member 30 of the loop member.
FIG. 5A shows the case where the wide member 6 is conveyed, and FIG. 5B shows the case where the narrow member 7 is conveyed.

The drive device 25 is provided with upper and lower rollers 40 and 41 for feeding the loop member into the transport path 24 (see FIGS. 1, 2, and 7).
(Fig.) Although it is rotated by a motor, the upper roller 40 is pivotally supported on the tip of the support arm 42, and when the loop member is dropped into the transport path 24, it does not interfere with the base end. It is adapted to be flipped upward about the axis 43 of.

The holding device 26 is for preventing the loop member from jumping up, and as shown in FIG. 4, an insertion groove 34 of the shutter 33 for pressing the loop member is provided at the upper end of the receiving member 30. The shutter 33 can be opened and closed by an air cylinder 35.

As shown in FIGS. 5 and 7, the regulating device 27 has a guide groove 32.
A pair of front and rear air cylinders that are internally fitted to the lower surface and have a U-shaped upper and lower guide plate 37 having a semi-thin member 7a, and a guide groove 39b for transporting 7a formed in the lower surface.
It is supported by 38, 38 so that it can move up and down.
When passing through, as shown in FIG. 5 (a), by raising the air cylinder 38, the lower side of the upper guide plate 37 is
A wide member guide groove 39a having the width of the guide groove 32 is formed.
When the narrow member 7 is passed through, the air cylinder 38 is lowered to form the narrow member guide groove 39b surrounded by the upper guide plate 37, as shown in FIG. 7 passes through this groove 39b.

The assembling device D includes a molding die 45, a feeding device 46, an opening / closing device 47, a guide device 48, a driving device 49, a discharging device 50, and the like.

Although the forming die 45 is circular, it has four split cracks, and as shown in FIG. 7, it is made up of a combination of splitting dies 45a, 45a and 45b, 45b, and the lower splitting dies 45a, 45a can be opened and closed. Pin 45c, 4
The upper split molds 45b, 45b are pivotally supported by 5c, and an opening 54 for the loop member is opened at the upper ends of the upper split molds 45b, 45b.

As shown in FIGS. 8 and 9, a wide groove 51 into which the wide member 6 is drawn is provided on the inner peripheral surface of the four-split mold 45a, 45a, 45b, 45b, and the narrow member is formed at the center of the width. 7 is provided with a narrow groove 52. Further, a pair of thin grooves 53, 53 are provided on the bottom surface of the narrow groove 52 to reduce air and reduce frictional resistance between the member 7 and the jig. There is.

As shown in FIG. 6, the take-in device 46 has a pair of left and right support plates 55 and 56 provided upright on the sub base plate 4, and an open / close chuck 57, a rotary encoder 58, and a positioning motor 59 attached thereto. One take-up roller 60 and one guide plate 48
The a is attached so that it can be opened and closed. Further, the rotary encoder 58 is driven by the same drive source of the feeding roller 60, and the rotary encoder 58 is also driven by the rotation of the feeding roller 60.

As shown in FIG. 7, the opening / closing device 47 is composed of a pair of left and right air cylinders 61, 61, the air cylinders 61, 61 are pivotally supported on the base plate 3, and the tips of the rods are split molds 45a, 45a. Is connected to the lower end of.

As shown in FIGS. 7 and 8, the feeding guide 48b is attached to the tip of the rod of the air cylinder 62 so as to be able to be taken in and out from the insertion port 54 of the molding die 45, and the lower surface thereof is in the feeding direction of the loop member. It is formed to be inclined. The driving machine 49 drives the fasteners 64a, 64b, 64c, 64d, 64e into the loop members by the power of the motor 63 (see FIGS. 10 to 12), and the driving position is constant. .

However, as shown in FIG. 6, a stopper metal positioning air cylinder 75 is connected to the rod 15a of the slide base centering air cylinder 15, and the molding die 45 is moved by the air cylinder 75 via the base plate 3. As a result, the driving position is changed in the width direction.

The discharging device 50 is based on an air cylinder, and a striking piece 65 that pushes down the loop R is attached to the tip of the rod.

In FIG. 2, reference numeral 70 is a photoelectric switch for detecting the end of the narrow member 7, 71 is a proximity switch for confirming the up / down switching of the upper guide plate 37, 72 is a proximity switch for counting fasteners, and 73 is a photoelectric switch for counting start. is there. Further, in FIG. 6, 74 is a stopper and 75 is a damper block.

Next, the procedure of the manufacturing process will be described.

The cartridges 8, 9a, 9a are delivered with the loop members stacked on each other.

When the suction device B is moved, first, the suction cup 85 of the one tentacle 13 is cut at the notch 10 and the cartridge 8 of the wide member 6 is moved.
When the suction member 85 is moved to the conveyance path 24 by the movement of the suction device B, the guide member 32 is sucked into the guide groove 32.
When the tentacles 13 are lifted, the tentacles 13 are lifted at the same time when they are sensed and the adsorption is released. On the other hand, the tentacle 14 is dropped into its cartridge 9a, 9a for the suction of the narrow member 7.

When the wide member 6 is stored in the conveying path 24, the upper roller 40 of the drive device 25 falls on the wide member 6 due to the supporting arm 42 falling, so that the conveying of the wide member 6 is started and at the same time, the pressing device 26 is moved. In the operating state, the assembling apparatus D is supplied and the feeding apparatus 46 is operated.

In the assembling apparatus D, since the molding die 45 is in the closed state and the feeding guide 48b is inserted into the insertion opening 54, when the wide member 6 is pushed in while being guided, the feeding apparatus 46. The take-in roller 60 rotates in the inner peripheral portion of the molding die 45.

As a result, the wide member 6 is inserted into the wide groove 51 of the molding die 45, and the rotation encoder 58 counts the number of rotations of the take-in device 46 in response to the signal from the count start photoelectric switch 73. Stop at position. Further, by installing a sensor immediately before the molding die 45, it is possible to receive a signal from the sensor and stop it at a predetermined position by a timer.

At that time, the overlapping portions 76 at both ends of the wide member 6 are located at the insertion opening 54 of the molding die 45 (see FIG. 10). In this state, the feeding guide 48b is retracted and then the portion is driven. The stopper 64a is driven by the inserting machine 49, and the forming of the inner race Ra is completed.

After the stopper 64a of the inner race Ra is driven in, the retraction device 46 slightly feeds the inner race so that the outer race stopper and the inner race stopper do not overlap and stop.
(See FIG. 11) Next, in the same manner as the wide member 6, this time the narrow member 7
The case where is supplied to the molding die 45 will be described. In this case, in the transport path 24, the regulating device 27 operates and the width thereof is determined (see FIG. 5b). In the assembling device D, at this time, the feeding guide 48b is still provided in the insertion port 54. Since it has not entered, when the tip of the narrow member 7 is inserted into the insertion opening 54 of the forming die 45, the forming die 45
The tip of the narrow member 7 hits the end of b, the loop formation is stopped by the signal of the terminal detection photoelectric switch 70, and the ends of the two narrow members 7a, 7a are aligned.

Then, the tip end of one of the semi-thin members 7a is stopped at the inner ring Ra by the fastener 64b by the driving tool 49 (see FIG. 11), and this stop position is the same as that of the first stopper 64a. Then, the other semi-thin member 7a is changed in position by the movement of the molding die 45 integrated with the base plate 3 and is stopped by the stopper 64c.

Next, after the feeding guide 48b has thrust into the insertion port 54, the narrow member 7 is fed while being guided by the narrow groove 52 of the molding die 45 by the rotation of the feeding roller 60, and the semi-thin member 7a, With both ends of 7a overlapping, the take-in roller 60 stops,
After the feeding guide 48b is retracted, one semi-thin member 7a is placed at the same position as the stopper 64c as shown in FIG.
The tip of the is stopped by the stopper 64e, and then the mold 45 is returned to the original position by the movement of the base plate 3,
The tip of the other semi-thin member 7a is stopped by a stopper 64d.

Since the assembly of the loop R is completed by this, the opening / closing device 47 is actuated, the molding die 45 is opened, the retracting device 46 is contracted by the opening / closing chuck 57, and the roller center output air cylinder 16 and the slide base center output air. The cylinder 15 is operated to move it to the dropping position, the discharging device 50 is actuated, the molding die 45 is pushed out of the loop R, and falls into the lower receiving box (not shown).

In addition, depending on the property of the material, there is a difference in the repulsive force of the material, so that it may not follow the shape of the molding die 45, and the diameter of the loop to be manufactured may be large or small. In that case, the diameter of the loop can be arbitrarily adjusted by adjusting the rod length of the air cylinders 61, 61 of the opening / closing device 47 in order to adjust the size of the product.

The take-in device 46 is moved in and out of the molding die 45 by the movement of the sub base plate 4 with respect to the base plate 3, and the movement is performed by the operation of the air cylinder 16.

In this way, the loop R is mechanically mass-produced automatically, but when the cartridge 8 lacks the loop member, the sensor 82 detects it and notifies it, so that the loop member is replenished. To do.

The shape of the loop is not limited to a circle, but may be an ellipse, a quadrangle, a triangle, a polygon, or the like. Also,
As the material of the loop member, bamboo, metal, plastic or the like can be used in addition to wood, and an adhesive agent can be used instead of the fastener.

〔The invention's effect〕

As described above, according to the present invention, with regard to the method and apparatus for assembling a loop that includes an inner ring and an outer ring, in which a narrow member is wound around the outer side of a wide member, the inner ring is formed by the same molding die. After molding, the outer and outer rings can be accurately positioned and molded on the outside by controlling the wide groove and narrow groove, so a good-looking product that does not cause the inner and outer rings to be misaligned is automatically generated. It has an excellent effect that it can be mass-produced.

[Brief description of drawings]

The drawings show one embodiment, FIG. 1 is a perspective explanatory view showing a partially disassembled assembly machine, FIG. 2 is a front view in an assembled state,
FIG. 3 is a cross-sectional view of the feeding device side as viewed from the side, FIG. 4 is a cross-sectional view of a holding device in the feeding device, FIG. 5 is a cross-sectional view of a restricting device in the feeding device, and FIG. 6 is a sectional view when the narrow member 7 is conveyed, and FIG. 6B is a sectional view when the narrow member 7 is conveyed. FIG. 6 is a side view mainly showing the assembling apparatus, FIG. 7 is a sectional view showing a main part of the assembling apparatus mainly from the front, FIG. 8 is a sectional view showing the same part from the side, and FIG. Partial cross-sectional views of the mold, FIGS. 10 to 12 are perspective views for explaining the assembly procedure of the loop. D: Assembly device, R: Wheel, Ra: Inner wheel, Rb: Outer wheel, 6 ... Wide member, 7 ... Narrow member 45 ... Mold, 45a ... Cracking mold, 51 …… wide groove, 52 ……
Narrow groove 54 …… Insertion port, 64a, 64b, 64c, 64d, 64e, …… Stopper 46 …… Feeding device, 48b …… Feeding guide, 49 …… Driving machine

Front page continued (72) Inventor Haruo Murakami 2 Wakasugi, Kamishichi-cho, Nakashinagawa-gun, Toyama Prefecture Marumas Machinery Co., Ltd. 72) Inventor Ichiro Tanahashi 5 560, Imaichi, Toyama City, Toyama 5 Limited company Masago Giken Co., Ltd. (56) References

Claims (2)

[Claims] 1. A method of assembling a loop consisting of an inner ring and an outer ring, in which a narrow member is wound around an outer side of a wide member. Using a molding die having an insertion opening and having a wide groove formed on a circular inner peripheral surface and a narrow groove formed at the center of the width, first, a wide member is first inserted to extend along the wide groove. Stop by turning the overlapped part that has been aligned with a stopper, rotate the inner ring formed in this way to slightly shift the overlapped part, and then let the tip of the narrow member face the insertion opening.
There, the inner ring is fastened with a fastener, and then the inner ring is rotated to wind the narrow member around the narrow groove along the narrow groove, and the tip of the narrow member is fastened to the proximal end. A method for assembling a loop, characterized in that the inner loop is molded by stopping with, and the loop thus assembled is discharged by opening the lower part of the molding die. 2. A device for assembling a loop made up of an inner ring and an outer ring, in which a narrow member is wound around a wide member, and a mold is formed so that the lower part can be opened and closed, and the mold has the above-mentioned upper end. An insertion port for both members is provided, a wide groove and a narrow groove at the center of the width are formed on the circular inner peripheral surface, and the wide member is rotated inside the forming die along the wide groove. In addition, the insertion device is provided, and further, the insertion guide of the member and the driving machine are provided at the insertion opening so as to face each other.
The inner ring formed along the wide groove is stopped at the tip of the narrow member, and then the inner ring is rotated by the feeding device to form the outer ring along the narrow groove on the outer side of the inner ring. An assembly device for loops, which is characterized in that