JP2000246550A - Aligned carrying structure of loose parts by metal mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an operation reliability, shorten a tact and increase a productivity by always synchronizing a metal mold action with the feedout action of loose parts accurately. SOLUTION: A metal mold 1 which can reciprocate, a cam 3 provided on the metal mold and an action converter 52 for converting the reciprocation obtained by the cam to the carrying action for supplying the loose parts to the metal mold in order are provided. The metal mold 1 which can reciprocate, the cam 3 provided on the metal mold and the action converter 52 for converting the reciprocation obtained by the cam to oneway step rotation and a carrying table 53 for supplying the loose parts to the metal mold in order by the oneway step rotation are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for aligning and conveying loose parts using a mold.

[0002]

2. Description of the Related Art FIG. 4 is a schematic view for explaining a conventional automatic assembly process. As shown in FIG. 4, in a step of automatically assembling a tap connected to an outlet which is a wiring device, a movable half A as a loose part of a resin molded product and a continuous half of a plug blade half-processed with a conductive metal hoop material. There is a step of sequentially feeding the processing hoop material B into the assembling processing die C and crimping the half-processed blade on the movable piece A.

[0003] The mold used for such an assembling process is as follows.
The upper mold is divided into an upper mold and a lower mold, and the lower mold is fixed, but the upper mold performs a vertical linear motion (piston motion) with respect to the lower mold. B
Are sequentially fed into the assembling die C in synchronization with the piston movement.

[0004]

In such an automatic assembling process, so-called feeding operations X and Y for picking the movable piece A to change the direction or picking the movable piece A and placing it at a predetermined position are performed. Done. Although these delivery operations are performed by, for example, an air-driven or oil-driven cylinder mechanism, a pressure control system for air, oil, and the like requires a different control system different from the control system of the assembly processing mold 3. ,
There was a problem that precise synchronization between the mold operation and the feeding operation could not be obtained, and the operation reliability was lowered. Further, since the feeding operations X and Y are basically repeated operations of returning to the origin, a time for returning to the origin is required, and there is a problem that there is a limit in shortening the tact time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a first object of the present invention is to achieve accurate synchronization between a mold operation and a dispensing operation of loose parts. It is an object of the present invention to provide a structure for aligning and transporting loose parts by using a mold, which is excellent in operation reliability. The second object of the present invention is to eliminate origin return operation, shorten tact time, and improve productivity. An object of the present invention is to provide an excellent arrangement / conveyance structure of loose parts using a mold.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a method for reciprocating a die, a cam provided on the die, and A motion converting unit for converting a reciprocating motion obtained by the cam into a transporting motion for sequentially supplying loose parts to the mold.

According to the second aspect of the present invention, a mold for reciprocating motion, a cam provided on the mold, and a motion for converting the reciprocating motion obtained by the cam into a one-way step rotating motion. A conversion unit and a transfer table for sequentially supplying loose parts to the mold by the one-way step rotation.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a structure for aligning and transporting loose parts using a mold according to the present invention will be described below in detail with reference to FIGS.

FIG. 1 is an exploded perspective view for explaining a structure for aligning and transporting loose parts using a mold, FIG. 2 is a schematic diagram for explaining the operation principle of the structure for aligning and transporting loose parts using a mold, and FIG. It is a top view explaining the specific operation | movement of the alignment conveyance structure of components.

In FIG. 1, reference numeral 1 denotes an upper mold, and 2 denotes a lower mold. Although the lower mold 2 is fixed,
The upper mold is adapted to perform a piston movement. A cam 3 is attached to a side surface of the upper mold 1. The cam 3 has a wavy curved surface 30 in the piston movement direction.

A link unit 4 is attached to a side surface of the lower mold 2. The link unit 4 includes a base section 40, a link arm 41, an air spring section 42, rollers 43, 44, 4
5 is included. The base 40 is a block-shaped base, and is attached to the side surface of the lower mold 2 so as to face the tip of the cam 3. The link arm 41 is rotatably attached to the base 40 via a shaft 46. A roller 43 that is always in contact with the wavy curved surface 30 is attached to the base side of the link arm 41 and the cam 3 side. A roller 44 is attached to the base of the link arm 41 and farther from the cam 3, and a roller 45 is attached to the tip of the link arm 41.

The air spring portion 42 is attached to a step portion 40a provided on the base portion 40. The distal end pressing portion 42a of the air spring portion 42 always applies a pressing force to the roller 44 so as to always apply a left rotation torque about the shaft 46 to the link arm 41 so that the roller 43 always contacts the wavy curved surface 30. Has been.

A table unit 5 is attached to the bottom surface of the lower mold 2. The table unit 5 includes a base unit 50, a joint block 51, a one-way clutch 52 corresponding to a motion conversion unit, and a table 53.
The base unit 50 is a block having a step on both sides. A bearing hole 50a is formed in the center of the base 50,
The shaft 54 is inserted into the bearing hole 50a from below. Axis 5
The base 50 into which the base 4 is inserted is attached to the bottom surface of the lower mold 2. The shaft 54 protruding from the base 50 is provided with a ball bearing 5.
5, the collar 55a, the joint block 51, the cylindrical roller bearing 56, the one-way clutch 52 and the cylindrical roller bearing 56 integrated with the table 53 are sequentially stacked and inserted, and finally the split nut 57 is inserted. Is done.

The joint block 51 is in the form of a thick, substantially rectangular plate, and has a through hole 51 a for insertion into the shaft 54.
And an oval through-hole 51b into which the roller 45 is fitted. The table 53 has a thick disk shape, is provided with a cross-shaped rib 53a, and a one-way clutch 52 is attached to a central portion of the cross-shaped rib 53a. A concave step 53b for mounting a loose part A described later is provided. The concave steps 53b are provided at 90 ° intervals on the upper peripheral edge of the table 53. Also, on the periphery of the table 53, a concave step 5 is provided.
The cuts 53c are provided at 90 ° intervals at the positions that are 45 ° with respect to 3b.

In the vicinity of the table unit 5, a rotation stopper 6, a reversal prevention stopper 7, and a cam 8 are provided. The rotation stopper 6 and the inversion prevention stopper 7 are attached to the bottom surface of the lower mold 2 near the table unit 5. The cam 8 is located just above the rotation stopper 6,
Attached to the top.

The rotation stopper 6 includes a base portion 60, a stopper 61, a stopper guide portion 62, a stopper regulating portion 63, and an urging spring 64. The base portion 60 is a rectangular thick plate. Stopper 61
Is a rod-like member having a substantially square cross section on which a slope 61a having an acute angle at the front end is formed, and a slope 6 inclined forward, at the rear end.
1b is provided with the rising part 61c formed. The stopper guide 62 guides the rod-like portion of the stopper 61 that slides back and forth, and is attached to the front end of the base 60. The stopper restricting portion 63 has a rectangular block shape, and
0 restricts the movable range of the stopper 61 by being attached to the rear end. The biasing spring 64 is interposed between the rising portion 61c and the stopper restricting portion 63, and is a coil spring.
The stopper 61 is urged forward.

The cam 8 is provided directly above the inclined surface 61b of the rotation stopper 6. The cam 8 has a rod shape having a substantially square cross section, and is attached to the top surface of the upper mold 1. The cam 8 has a slope 8a at the tip. The slope 8a slides on the slope 61b when the upper mold 1 descends and covers the lower mold 2.
The stopper 61 is moved backward against the urging force of the urging spring 64.

The reverse prevention stopper 7 includes a base 70 and
It is configured to include a stopper 71 and an urging spring 72. The base part 70 is U-shaped. A stopper 71 is rotatably mounted between the U-shaped opposed pieces of the base part 70. The stopper 71 is a rod-like member having a substantially square cross-section, and has a tip portion extending below the table 53, and a claw-like engaging portion 71a facing upward is formed at the tip portion.
A biasing spring 72 is inserted between the engaging portion 71a and the bottom surface of the lower mold 2. The urging spring 72 urges the engaging portion 71a so as to always press the lower surface of the table 53.

The engaging portion 71a is composed of a steep upright surface 71b and a slope 71c. Engagement part 71a
Although the table 53 that is going to rotate to the right is allowed to rotate by pushing down the urging spring 72 and the slope 71b is slipping, the table 53 that is going to rotate to the left is 53 is prevented from rotating by engaging with an engaging portion (not shown) provided on the lower surface.

Next, the operation of the structure for aligning and transporting loose parts by using the above-described mold will be described with reference to FIGS. In addition, in the schematic diagram of FIG. 2, parts corresponding to the respective elements shown in FIG. 1 are denoted by the same reference numerals as those denoted in FIG. That is, in FIG. 2, 3 is a cam, 41 is a link arm, 42 is an air spring portion, and 43 and 4.
4 and 45 are rollers, 46 and 54 are shafts, 51 is a joint block, 52 is a one-way clutch, and 53 is a table. In addition, A is a movable piece which is a resin molded product corresponding to a loose part, and B is a semi-processed hoop material in which a plug blade formed by half-processing a conductive metal hoop material is connected.

Now, when the upper mold 1 makes a piston movement,
The cam 3 and the cam 8 also perform the piston movement integrally. Then, the wavy curved surface 30 of the cam 3 is displaced between the solid line and the alternate long and short dash line, and the roller 43 repeats reciprocating motion between the solid line and the alternate long and short dash line along the wavy curved surface 30. As a result, the link arm 41 repeats the rotational movement about the shaft 46 between the solid line and the alternate long and short dash line. At this time, the joint block 51 connected to the shaft 54 receives torque from the tip of the link arm 41 via the roller 45, and
A rotation of 90 ° clockwise by 0 ° is performed on the shaft 54. Then, although this 90 ° counterclockwise rotation is transmitted to the one-way clutch 52, the one-way clutch 5
No. 2 effectively transmits only the right rotation torque of 90 ° to the table 53 and tries to rotate the table 53 clockwise at a 90 ° pitch.

When the table 53 is about to rotate clockwise, the slope 8a at the tip of the cam 8 reaches the slope 61b of the rotation stopper 6 and is in contact therewith. And the table 53 is rotatable.

Therefore, when the table 53 starts rotating clockwise, the engaging portion 71a of the reversing prevention stopper 7, which is locked to a locking portion (not shown) on the lower surface of the table 53 to prevent left rotation, Due to the downward force on the slope 71c generated by the torque of the table 53 that is about to rotate clockwise,
The table 53 is pushed down against the urging force of the urging spring 72, and the table 53 can rotate rightward beyond the engaging portion 71a. That is, when the upper mold 1 moves up and down once, the table 53 rotates 90 ° clockwise.

Then, in synchronization with the piston movement of the upper mold 1, the movable piece A is placed at the 6 o'clock position on the table 53 by a known method, and the semi-finished hoop material B is moved to the 12 o'clock position on the table 53. Is moved from the right side to the left side by one pitch, and the semi-finished hoop material B is clamped to the movable piece A located at the 12 o'clock position of the table 53 by the assembling die C.

Next, a semi-processed hoop material B is
The state of caulking a half-processed blade will be described with reference to FIG.
You. In FIG. 3, B_1,B_TwoIs a pair of semi-machined blades
And a pair of semi-machined blades B on the right side_1,B_TwoSide of
It is horizontal. However, at 12:00 on the table 53
Blade B sent to position_1,B_Two, The blade B₁Is possible
On the left side of the moving piece A, a blade B_TwoIs on the right side of movable piece A
Each is caulked, blade B _1,B_TwoIs vertical. This addition
Moving piece A and blade B tightened_1,B_TwoTogether with
In the next step operation, it is sent to the right along with the semi-processed hoop material B.
Can be

Therefore, in the arrangement for transporting loose parts by the above-mentioned mold, the movable piece A as a loose part is completely mechanically synchronized with the piston movement of the upper mold 1.
Can be sequentially fed to a predetermined position, accurate synchronization between the die operation and the operation for feeding the movable piece A can be obtained, and the operation reliability is improved. Also, unlike the conventional feeding operations X and Y, which are basically repetitive operations of returning to the origin, the fed movable piece A is moved from the position of, for example, 6 o'clock to the desired 12 o'clock position by the unidirectional rotation of the table 53. Since the sheet is conveyed to the position, the home position return time is not required, the tact time can be reduced, and the productivity can be improved.

In the above embodiment, the semi-process
Hoop material B semi-finished blade B_1,B _TwoCan be caulked to
Although the moving piece A has been described as a loose part, the present invention
It is not limited to the form of the
What can be used when sending only parts to the mold
And a chain of transport tables
And the step-like transfer obtained by the motion converter
The motion is transmitted to a transport table running on an endless
Run the feed table to transport loose parts to the target position
May be made so as not to deviate from the scope of the claims.
The present invention includes them.
You.

[0028]

According to the first aspect of the present invention, the mold that performs reciprocating motion, the cam provided on the mold, and the reciprocating motion obtained by the cam sequentially supply the loose parts to the mold. Since it is configured to have a motion conversion unit that converts the transport motion, it is possible to mechanically obtain the synchronization between the mold operation and the unloading operation of the loose parts to the mold, it is possible to accurately take the synchronization,
There is an effect that it is possible to provide an excellent structure for aligning and transporting loose parts by using a mold, which can improve operation reliability.

According to the second aspect of the present invention, a mold that performs reciprocating motion, a cam provided in the mold, and a motion converting unit that converts the reciprocating motion obtained by the cam into a one-way step rotating motion. And a transport table for sequentially supplying loose parts to the mold by the one-way step rotation, so that the synchronization between the mold operation and the feeding operation of the loose parts to the mold is mechanically obtained. In addition, the parts can be supplied to the mold sequentially by one-step rotation, so that the home return time can be reduced and the cycle time can be shortened, and the productivity can be improved. There is an effect that a structure for aligning and conveying components can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view illustrating a structure for aligning and transporting loose parts by a mold according to an embodiment of the present invention.

FIG. 2 is a schematic view for explaining the operation principle of a structure for aligning and transporting loose parts by the mold.

FIG. 3 is a plan view for explaining a specific operation of a structure for aligning and transporting loose parts by the mold.

FIG. 4 is a schematic diagram illustrating a conventional automatic assembly process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die 2 Die 3 Cam 52 Motion conversion part 53 Transfer table A Separate parts

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroaki Aoshi 1048 Odakadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. F-term (reference)

Claims (2)

[Claims] 1. A reciprocating mold, a cam provided on the mold, and a motion converting unit for converting reciprocating motion obtained by the cam into a conveying motion for sequentially supplying loose parts to the mold. Equipped with a tool for aligning and transporting loose parts. 2. A reciprocating mold, a cam provided on the mold, a motion converting unit for converting a reciprocating motion obtained by the cam into a one-way step rotation, A conveying table for sequentially supplying the parts to the mold;