JPH026553B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a button-receiving position that receives buttons from a button supply body and a button-delivery position that corresponds to the vertical movement path of a sewing needle. The present invention relates to a button sewing machine equipped with a button carrier.

[Conventional technology]

In this type of sewing machine, a clamping means having a pair of clamping arms is provided in the vertical movement path of the sewing needle, and a button receiving position for receiving buttons from a button supply body and a button delivery position corresponding to the clamping means are provided. It is equipped with a button carrier that is rotatable back and forth between the buttons. The button carrier is driven by a reciprocating drive mechanism including a motor via a cam device, so that the carrier delivers the button to the holding means at the delivery position.

[Problem that the invention seeks to solve]

By the way, when the assembly of the sewing machine is completed at the production site, the button transport body is positioned at the button receiving position, so the cam device is manually rotated to rotate the transport body to the button delivery position and the transport body is moved to the button receiving position. The correct positional relationship with the clamping means is confirmed.

However, manually driving the cam to rotate requires a large amount of force and is cumbersome, which hinders the improvement of productivity during manufacturing. The present invention has been made in view of the above circumstances, and an object thereof is to provide a sewing machine with buttons that can quickly adjust the position of a button carrier and lead to improved productivity.

[Means for solving problems]

This invention consists of the following constituent elements.

That is, it has a sewing needle 5 that moves up and down, and a pair of clamping arms 6a that can be opened and closed to hold the button B in the vertical movement path of the sewing needle 5, and the sewing position located in the vertical movement path of the sewing needle 5 and this. A button supply body that continuously supplies buttons B from this transfer path 11, which has a holding means 6 that is moved between a retracted position separated from the path, and an inclined transfer path 11 that is slidably guided by its own weight. 9, and a button mounting portion 1 formed with a pin 19 that can be fitted into the button hole h of the button B.
8, the mounting portion 18 of which is attached to the button supply body 9
A button carrier 17 is movably provided between a receiving position for receiving the button B from the transfer path 11 and a delivery position for delivering the button to the holding means 6; When the button is placed in the button receiving position, it acts on the button B and moves the button hole h into the button placement portion 18.
button position correction member 16 driven to fit into the pin 19 of the button position correction member 1;
6, a motor 45 for independently driving the button carrier 17 is provided separately from the drive means, and the motor 45 is energized when adjusting the sewing machine,
The placing section 18 of the button carrier 17 is moved to the delivery position.

[Effect]

By energizing the motor 45 during adjustment of the sewing machine, the mounting portion 18 of the button carrier 17 is moved to the delivery position.

〔Example〕

An embodiment of the present invention will be described below based on the drawings. First, in Figure 1, 1 is a work table,
2 is a sewing machine with a button installed on a work table 1, which has a main shaft 3 rotatably supported inside.
A sewing needle 5 is moved up and down as the main shaft 3 rotates to perform sewing operations. Reference numeral 6 denotes a clamping means consisting of a pair of clamping arms 6a, 6a that can be opened and closed. A support arm 8 is provided on the top so that it can be rotated up and down. Reference numeral 9 denotes a button supply body, which is disposed close to the sewing machine 2 and is adapted to continuously feed out the buttons B stored therein so that the front side thereof is exposed upward. Reference numeral 10 denotes a button guide, and this is provided on the work table 1 between the sewing machine 2 and the button feeder 9. An inclined button transfer passage 11 is attached to the upper part of the button guide. It is designed to slide downhill due to its own weight. Reference numeral 12 denotes a shooter, which is extended between the button supply body 9 and the button guide body 10, and feeds the button B from the button supply body 9 into the button transfer passage 11. In this transfer path 11, the buttons are intermittently fed one by one by an individual feeding mechanism (not shown) to reach the button waiting section 13 at the lower end shown in FIG. The standby section 13 consists of a position regulating section 14 that opens at its lower end, and a shutter plate 15 that moves to open and close the opening surface of the lower end of the position regulating section 15 by turning on and off a solenoid (not shown). 15 is in the closed position. Reference numeral 16 denotes a button position correction member, which is provided above the button standby unit 13 so as to be rotatable and movable up and down, and is rotated by friction against the button B of the button standby unit 13 to correct the position of the button B. . 17 is a button carrier, which is rotatably provided below the button position correction member 16;
A pair of pins 19 corresponding to the buttonholes h are protruded from the upper surface of the placing portion 18. Therefore, as the button position correction member 16 is driven, the button B is fitted into the pin 19 through the buttonhole h and positioned, and after this positioning, the button transport body 1
7 rotates so that its placing portion 18 corresponds to the clamping arm 6a of the clamping means 6.

Following the above overview, we will mainly focus on button position correction member 1.
3 and the button carrier 17 will be explained in detail with reference to FIGS. 2 to 5.

A support frame 20 located near the right side of the sewing machine 2 is disposed on the work table 1. A button position correction shaft 21 is rotatably and vertically supported on the support frame 20, and a cap-shaped button made of an elastic material is attached to the lower end of the support frame 20. A position correction member 16 is fitted. The button position correction shaft 21 moves between a correction position where the position correction member 16 is locked on the top surface of the button B and an inactive position where it is separated from the button B, and is always moved in the correction position direction by the compression coil spring 22. is energized to move. On the other hand, button carrier 1
7 is bent in steps, and its upper end is a support shaft 23a.
It is rotatably supported by, and is placed at a corresponding receiving position so as to look up at the button standby part 13 as shown in solid lines in FIGS. It rotates between the corresponding delivery position.

Next, the driving means for driving the button position correction member 16 will be described.

A motor 24 constituting a rotation mechanism 23 is supported on the support frame 20, and a rotation shaft 25 and a reciprocating rotation shaft 26 are supported on the support frame 20 between the motor 24 and the position correction shaft 21 of the button position correction member 16. are each rotatably supported.
The rotation of the motor 24 is transmitted to the rotating shaft 25 via a gear 27 attached to the motor shaft, an intermediate gear 28, and a gear 29 on the rotating shaft 25, and the rotation of the rotating shaft 25 is transmitted to the rotating shaft 25 at its lower end. It is transmitted to the reciprocating shaft 26 through the movable lever 30, the intermediate connecting link 31, and the swinging lever 30a at the lower end of the reciprocating rotary shaft 26, so that the reciprocating rotary shaft 26 is reciprocated within a predetermined angle range. It's summery. Further, a gear 32 is fixed to the upper end of the reciprocating rotation shaft 26, and a gear 33 that meshes with the gear 32 is fitted near the upper end of the position correction shaft 21 of the button position correction member 16. 26, the rotational force is transmitted to the position correction shaft 21 through the gears 32 and 33, so that the button position correction member 16 is constantly rotated back and forth.

A solenoid 34 is disposed within the support frame 20, and a swing lever 36 is pivotally supported on an armature 35 of the solenoid. Reference numeral 37 denotes a substantially L-shaped link, which is swingably provided by a stepped screw 38, one end of which contacts a collar 39 fixed to the button position correction shaft 21 via a roller 40, and the other end of which is attached to the link. It is connected to the swing lever 36 via 41. This solenoid 34 moves the button B from the transfer passage 11 of the button guide 10 to the button waiting section 27.
When the shutter plate 15 is transferred to the shutter plate 15 in the closed position, it is energized. When the solenoid 34 is energized, the armature 35 rotates the connecting link 37 via the link 41 in the direction of the arrow around the stepped screw 38, and the button position correction shaft 21 rises against the spring 22 via the collar 39. The button position correction member 16 is moved to the inactive position. Reference numeral 42 denotes an optical sensor consisting of a light-emitting element and a light-receiving element, which is arranged at the upper end of the button position correction shaft 21, and when the button B fits into the pin 19 of the carrier 17 and the position correction is completed, the button position is adjusted. A descending signal is output based on the fact that the correction shaft 21 descends by the thickness of the button B. The solenoid 34 is demagnetized by this descending signal, and the button position correction shaft 21 is moved upward from the correction position to an upper inactive position.

Next, the button carrier 17 will be mainly described in detail with reference to FIGS. 5 to 7. 43 is support frame 2
This is a rotating shaft provided in a horizontal state at 0, and is driven by a pulse motor 45 constituting a reciprocating drive mechanism 45 via a reduction gear mechanism 46. Furthermore, a lifting cam 47 for lifting and lowering the clamping means 6 and a turning cam 48 for reciprocating the button carrier 17 are attached to the rotating shaft 43 on the side opposite to the reduction gear mechanism 46. It has a first ascending cam surface 47a and a second ascending cam surface 47a on the outer circumference. Reference numeral 49 denotes an L-shaped driven lever, which is swingably supported by a support shaft 50, the vertical portion 49a of which is provided with a roller 51 that comes into contact with the lifting cam 47, and the horizontal portion 49b has an engagement pin 52. This pin 52 is engaged with a lift arm 53 attached to the support arm 8 for the clamping means 6. When the elevating cam 47 is rotated by the pulse motor 45 in the direction shown by the arrow in FIG. The lift arm 53 is rotated to the position P1 shown by the dotted chain line.
The holding means 6 is rotated to a receiving corresponding position R1 suitable for receiving the button B from the button carrier 17 as shown by the two-dot chain line in FIG. further rotates from position P1 to position P2, and the clamping means 6
is rotated upward to be located at an extraction position R2 where the button B is extracted from the pin 19 of the carrier 17, as shown by the two-dot chain line in FIG.

Reference numeral 54 denotes a swinging link having an inverted dogleg shape, which is rotatably supported by a support shaft 55, and has an engagement roller 56 at one end that comes into contact with the swinging cam 48. A rotating lever 57 is attached to the upper end of the support shaft 23a of the button carrier 17, and a connecting link 59 is connected between the rotating lever 57 and the swinging link 54 via a universal joint 58. There is. Then, when the pulse motor 45 is energized,
The swing link 54 is reciprocated by the rotation cam 48 between the position shown by the solid line in FIG. 8 and the position shown by the two-dot chain line. Accordingly, the button carrier 17 is rotated back and forth between the button receiving position shown in solid lines in FIGS. It's getting old.

Now, FIG. 9 shows an electric circuit diagram, and in this figure, a RAM 61 and a ROM in which sewing data such as the number of buttons and button spacing dimensions are stored are connected to the CPU 66. Furthermore, CPU61
is connected to the pulse motor 4 via the interface 63.
5, a receiving position confirmation switch 65 that closes the receiving position after confirming the receiving position of the conveyor 17, a button position correction completion switch 66, and a sewing machine stop switch 67 are connected to the pulse motor. Drive circuit 6
8, a button position correction member motor drive circuit 69, a button position correction member solenoid drive circuit 70, and a shutter plate solenoid drive circuit 71.
are connected to each other.

Next, the operation of the above configuration will be explained.

After the power is turned on, the button B is sent to the button standby section 13 along the transfer path 11 as shown in FIG. 2 by the button individual feeding mechanism in the button supply body 9, and is placed on the shutter plate 15 in the closed position. When the solenoid 34 is energized and the button position correction shaft 21 is moved downward by the compression coil spring 22 to the correction position, the button position correction member 16 comes into contact with the upper surface of the button B. At this time, the motor 24 is energized and the button position correction member 1
6 is always in a state of reciprocating rotation. Therefore, the reciprocating rotational movement of the button position correction member is
is transmitted and rotates by friction. In this state, the solenoid of the button individual feeding mechanism is energized and the shutter plate 15 is
is moved to the open position as seen in FIG.
Then, the button B is rotated and sent from the standby section 13 onto the placement section 18 of the button transport body 17, and the button B is
9 and the button B is delivered to the carrier 17. At this time, the optical sensor 42 detects that the button position correction member 16 has descended by the thickness of the button B and outputs a descending signal, so the solenoid 34 is demagnetized and the button position correction shaft 21 is moved by the connecting link 37 to the collar 39. The button position correction member 16 is pushed up through the button position correction member 16 to return to the inactive position.
Thereafter, the pulse motor 45 of the reciprocating drive mechanism 44 is energized, and the first rising cam surface 47 of the lifting cam 47 is
a, the driven lever 49 is rotated to position P1 as shown by the two-dot chain line in FIG. 7, and the clamping means 6 is moved to the receiving position R1 as shown by the two-dot chain line in FIG. Next, the button carrier 17 is rotated by the rotary cam 48 from the receiving position shown in solid lines in FIGS. It is held by the holding arms 6a. In this state, the driven lever 49 is rotated to position P2 by the second lifting cam surface 47b, the clamping means 6 is moved to the extraction position R2 as shown by the two-dot chain line in FIG. 6, and the button B is removed from the pin 19. The button B is thereby transferred from the carrier 17 to the holding means 6.
Then, the pulse motor 45 of the reciprocating drive mechanism 44 rotates the button carrier 17 back from the delivery position to the receiving position, and the button delivery operation to the clamping means 6 is completed. This operation is repeated and the buttons B are successively supplied to the holding means.

Next, the processing of the CPU 60 corresponding to the above operation will be explained based on the flowchart of FIG.
First, when the power is turned on in step S1, the opening and closing of the pulse motor starting switch 64 is confirmed in step S2. If this switch 64 is closed, the process advances to step S3, where the receiving position confirmation switch 6
5. Check whether the conveyor 17 is at the button receiving position by opening and closing. If the confirmation switch 65 is in a power-off state, the process proceeds to step S4, where the pulse motor starting switch is energized and the button carrier 17 is rotated to the delivery position. As a result, the receiving position confirmation switch 66 is energized in step S5, and then the pulse motor starting switch 64 is energized in step S6. As a result, the conveyor 17 is ready to receive the button, so the button B is transferred to the standby section 13, and in step S7, the solenoid is energized by the shutter plate solenoid drive circuit 71, and the shutter plate 15 is moved to the open position. At the same time, in step S8, the button position correction member solenoid drive circuit 77 turns on the solenoid 3.
4 is energized and is in a rotating state, the button position correction member 16 moves the button B into contact with the conveyor 17.
It fits into the pin 19 of. Then, in step S9, the button position correction completion switch 66 is energized.
When this is confirmed, the solenoid is demagnetized by the shutter plate solenoid drive circuit 71 in step S10, and the shutter plate 15 returns to the closed position.
The button position correction member 16 is adjusted based on the demagnetization of the solenoid 34 by the optical sensor 42 in step S11.
moves upward to the inactive position. Then step
At S12, the energization/disconnection state of the pulse motor start switch 65 is confirmed. If this is the energized state, the pulse motor 45 is energized in step S13, and when the predetermined energization operation of the pulse motor 45 is completed by the timer in step S14, the button carrier 17 returns to the receiving position in step S15. If the answer is yes, the receiving position confirmation switch 66 is energized, the pulse motor 45 is cut off in step S16, the process returns to step S7, and the above procedure is repeated.

If the pulse motor start switch 64 is already energized when the power is turned on in step S1, the process advances to step Sr1 to confirm the energization state of the start switch 64, and then to step Sr2.
The pulse motor 45 is energized by a predetermined number of pulses to rotate the button carrier 17 and position it at the button receiving position or the delivery position depending on the initial position. In this case, since the carrier 17 is previously positioned at the button receiving position during assembly, the carrier 17 rotates from the button receiving position to the delivery position. Therefore,
By closing the pulse motor start switch 64 in advance at the manufacturing site when assembly is completed, the conveyor 17
can be rotated to the button delivery position, and in this position the clamping means 6 moves to the receiving position R1 and the extraction position R.
2, the mutual correct positions of the carrier 17 and the clamping means 6 are confirmed.

In addition, although the pulse motor 45 was used for the reciprocating drive mechanism 44 in the above embodiment, a DC motor may be used instead of the pulse motor 45. In this case, the steps in the flowchart shown in FIG.
As shown in FIG. 11, Sr2 consists of step SS1 for energizing the DC motor, step SS2 for energizing the DC motor over time, and SS3 for de-energizing the DC motor.

In addition, various modifications may be made without departing from the spirit of the invention in actual implementation.

〔Effect of the invention〕

The sewing machine with a button is provided with a motor 45 for independently driving the button carrier 17 separately from the driving means, and energizes the motor 45 when adjusting the sewing machine.
The placing section 18 of the button carrier 17 is moved to the delivery position. In other words, only the placing part 18 can be moved to the delivery position, and the positional relationship with the holding means 6 can be easily adjusted.

Therefore, it is possible to provide a button-equipped sewing machine that can quickly adjust the position of the button carrier 17 and contributes to improved productivity.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is a longitudinal sectional view showing the button position correction member and its surrounding area, and Fig. 3 is a line indicated by - in Fig. 2. 4 is a partial plan view of FIG. 2, FIG. 5 is a partial plan view showing the button carrier and its reciprocating drive mechanism, FIG. 6 is a partial side view of FIG. 5, and FIG. is a partial sectional view taken along the - line in Fig. 5, Fig. 8 is a partial sectional view taken along the - line in Fig. 5, Fig. 9 is a block diagram of the electric circuit, and Fig. 10 shows the operation of the CPU. Flowchart FIG. 11 is a partial flowchart illustrating another embodiment of the invention. In the figure 5... Sewing needle, 6... Holding means, 9... Button supply body, 6a... Pair of holding arms, 11... Transfer path, 16... Button position correction member, 17...
Button carrier, 18... Button placement section, 19...
Pin, 45...motor, B...button, h...button hole.

Claims (1)

[Scope of Claims] 1. A sewing needle 5 that moves up and down, and a pair of clamping arms 6a that are openable and closable to hold button B in the vertical movement path of the sewing needle 5, and a pair of clamping arms 6a that are located in the vertical movement path of the sewing needle 5. The clamping means 6 is moved between the sewing position where the needle is sewn and the retracted position spaced from the passage.
a button supply body 9 that has an inclined transfer path 11 that guides the buttons so that they can slide down by their own weight, and continuously supplies buttons B from this transfer path 11; and a pin 1 that can be fitted into the button hole h of the button B.
9 is formed, and the placing part 18 has a receiving position for receiving the button B from the transfer passage 11 of the button supply body 9 and a receiving position for transferring the button to the holding means 6. A button carrier 17 movably provided between the delivery position and the delivery position
and, when the button carrier 17 is placed at the button receiving position, a button position correction actuated on the button B and driven to fit the button hole h into the pin 19 of the placement part 18. Member 16
and a driving means for driving the button position correction member 16, a motor 45 for independently driving the button conveyor 17 is provided separately from the driving means, and the button position correction member 16 is adjusted when the sewing machine is adjusted. A sewing machine with a button, characterized in that a motor 45 is energized to move the mounting portion 18 of the button carrier 17 to the delivery position.