JPS61263480A - Processed cloth feed mechanism of sewing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sewing device for continuously attaching buttons or tying holes to sewing locations on a workpiece cloth using a cycle sewing machine. The present invention relates to a work cloth conveyance mechanism in which a carry-out device for conveying the work cloth to a loading device is driven by an electric motor.

[Prior Art] Generally, in a sewing machine, a cycle sewing machine is used to continuously attach buttons or pierce the stitched parts of the workpiece cloth on a work table, and the workpiece cloth after sewing is transferred to the workpiece by a carry-out device. It is designed to be transported from the table to the outside to be placed on a loading device.

This unloading device has a unloading belt driven by an electric motor, and is configured to press the belt against the work cloth, and the loading device has a mounting table that is reciprocated between two positions by the drive of a cylinder. The work cloths carried out from the machine are sequentially placed on a mounting table as the cloth moves back and forth. In this case, the unloading device and the loading device are driven and controlled by an electric circuit, but the work cloth unloading state of the unloading device must be set in accordance with the reciprocating state of the mounting table in the loading device, so it is necessary to A measuring instrument is used to adjust the rotational speed of the electric motor to a predetermined value, and the cylinder valve is throttled based on this.

[Problems to be Solved by the Invention] However, with the above configuration, each measuring device must be connected to the electric circuit each time the speed of the motor is adjusted, which is time-consuming and has an impact on productivity at the manufacturing site. effect. In addition, if the electric circuit breaks down after delivery to a garment factory and the board is replaced with a spare one, it will be difficult for the garment factory to adjust the speed of the motor, resulting in a decline in serviceability.

Therefore, an object of the present invention is to provide a workpiece cloth conveying mechanism that allows the speed of the electric motor of the unloading device to be adjusted in a short time with simple operations, improves productivity, and improves serviceability after delivery. do·.

[Means for Solving the Problems] The present invention further transports the work cloth (9) sent out from the cloth transfer device (15) in the cloth feed direction by driving the electric motor (35), and transfers the work cloth (9) sent out from the cloth transfer device (15) to the loading device I (41). Export device (32
), a detecting means (66) detects the rotational speed of the electric motor (35) of the unloading device (32), and detects the unloading state and loading of the unloading device (32) based on the detecting means (66). A control means (71) is provided for adjusting the rotational speed of the electric motor (35) of the unloading device (32) in order to match the reciprocating motion of the device (41).

[Function] Since the detection means (66) is provided, the unloading device! ? (32)
When adjusting the rotational speed of the electric motor 1 m (35) to a predetermined value, it is only necessary to operate the control means (71).

[Example] An example of the present invention will be described below based on the drawings. 1
is a horizontally long work table provided on the upper surface of the machine frame 2, and each end in the longitudinal direction is a work cloth supply side 18 and a delivery side 1B. Reference numeral 3 denotes a machine table installed adjacent to the rear of the work table 1, and an operation panel 3a is provided at the left end of the table in the figure.
has been established. Reference numeral 4 denotes a cycle sewing machine installed on a machine table 3. An arm portion 5 of this machine extends forward, and a sewing needle 6 is supported at the tip thereof so as to be movable up and down. Reference numeral 7 denotes a pair of clamping arms which also serve as a presser foot, which are provided between the arm portion 5 and the work table 1 so as to sandwich the sewing needle 6 between them so that they can be opened and closed, raised and lowered, and moved from side to side. Due to the cooperation between the clamping arm 7 and the sewing needle 6, the cycle sewing machine 4 presses the button 8 on the workpiece cloth 9 for each cycle.
I! ! Sewing is done at FJ location P. 1
Reference numeral 0 denotes a button supply device, which is provided on the machine table 3 adjacent to the right side of the cycle sewing machine 4, and has a supply arm 11 that is rotatable in a horizontal plane. 12 is a button hopper provided on the machine table 3, and the button 8 is connected to the supply arm 11 of the button supply device 10 through a flexible pipe 13.
The receivers are supplied one by one to the holding arms 7, and by rotation of the receivers, the receivers are finally delivered to the clamping arms 7. Reference numeral 14 denotes a rail-shaped guide means, which is provided on the work table 1 so as to be located at the boundary between this and the machine table 3, and regulates and guides one side edge of the work cloth 9. Reference numeral 15 denotes a cloth transfer device. This consists of first and second presser mechanisms 16 and 17 located on the left and right sides of the cycle sewing machine 4, respectively, and is provided on the work table 1 along the guide means 14. The first presser mechanism 16 is provided so as to be movable in the left-right direction, and is fixed to the left end portion of a rack 18 that is provided within the machine frame 2 so as to be movable horizontally. Then, the pinion 20 of the negative pulse motor 19 is engaged with the rank 18, and as the pulse motor 19 rotates forward and backward, the first presser mechanism 16 is reciprocated from side to side integrally with the rack 18. ing. Further, the first presser mechanism 16 includes a presser bar 21 that is pivotally supported to be movable up and down, and a receiver that is disposed opposite to the presser bar 21 through a slit 22 formed in the left-right direction of the work table 1. is equipped with a plate 23, and the workpiece cloth 9 is moved by a cylinder 24.
The presser bar 21 and the receiver are clamped by the plate 22 and released.

Similarly to the first presser mechanism 16, the second presser foot 1117 extends to the upper surface through a presser rod 25 that is pivotally supported to be movable up and down and a slit 26 formed in the left-right direction of the work table 1. The receiving plate 27 is provided with a plate 27, and when a cylinder 28 is driven, the work cloth 9 is held between the presser rod 25 and the plate 22, and the holding is released.

The second presser mechanism 11 has a mounting plate 29 extending into the machine frame 2, and a second pulse motor 3 is mounted on the mounting plate 29.
0 is provided, and its rotating shaft is provided with a pinion 31 meshed with the rack 18. Then, when the first pulse motor 19 is started while the second pulse motor 30 is stopped, the second presser mechanism 11 moves together with the first presser mechanism 16 as the rack 18 moves, thereby processing the material. Each sewing location P on the cloth 9 is sequentially transferred to the needle drop point of the cycle sewing machine 4. Further, when the second pulse motor 30 is started while the negative pulse motor 19 is stopped,
Only the second presser mechanism 17 moves along the rack 18. 32 is a carry-out device, which carries out the work cloth 9 transferred from the cloth transfer device 15 to the work cloth delivery side 1B. 33 is the delivery side 1 of the work table 1.
A support plate erected at the rear of B; 34 is a mounting plate pivoted to the upper end of this support plate 33 so as to be movable up and down; 35 is a mounting plate 2;
4 is an electric motor for carrying out, 36 is an electric motor for carrying out 113
5, a part of which extends toward the cycle sewing machine 4 side. A driving pulley 37 is fitted onto the rotating shaft of the electric motor 35 for carrying out, and a carrying belt 39 is horizontally hooked between this pulley 37 and a driven pulley 38 provided between the extending end of the cover 36. ing. Reference numeral 40 denotes a push-up cylinder, which is installed on the work table 1 facing the mounting plate 34. When the work cloth 9 is transferred by the first and second presser mechanisms 16.11, the electric motor Ia 35 for carrying out is stopped, and in this state, the electric motor 135 for carrying out is moved upward together with the mounting plate 34 by the push-up cylinder 40. The belt 39 for carrying out is rotated and separated from the upper surface of the work table 1.

The cloth transfer operations of the first and second presser mechanisms 16 and 17 are completed, and the cycle sewing machine 4 moves the workpiece cloth 9 to the final sewing point P.
When the button attachment is completed, press the push-up cylinder 4.
0, the carry-out electric motor 35 rotates downward together with the mounting plate 34, and the lower side of the carry-out belt 39 descends above the workpiece cloth 9 and comes into contact with it. In this state, the electric motor 35 for carrying out is started, and the work cloth 9 is carried out from the work table 1 as the belt 39 for carrying out moves.

41 is the processed 'I'lI9 carried out by the carrying out device 32.
This loading device is installed on the right side of the machine frame 2 and below the work table 1.

In this loading device 41, 42 is a support plate horizontally attached to the lower end of the machine frame 2, 43 and 44 are first and second support rods rotatably supported on the support plate 42, respectively. A mounting table 45 and a clamping rod 46 are horizontally attached to the upper ends of the first and second support rods, respectively. The mounting table 45 occupies three positions sandwiching the descending path due to the weight of the work cloth 9 carried out by the carrying out device 32, and therefore the first support rod 4
3 is swing-driven by the cylinder unit 47 during the previous second rotation. Further, the second support rod 44 is swing-driven by the cylinder unit 48 between an action device in which the clamping rod 46 contacts the side surface of the mounting table 45 and a release position in which it is separated from the mounting table 56.

Now, in FIG. 2, the buttons with buttons indicate electrical circuits related to operation. In this FIG. 2, the operation panel 3a is equipped with various switches such as a button number setting switch 49 and a button spacing setting switch 50. Connected to CPtJ51. The C P LI 51 is sequentially connected to a RAM 52 and a ROM 53, and the RAM 52 temporarily stores sewing data such as the number of buttons and button spacing dimensions inputted by the switches 49 and 50 of the operation panel 3a, and the sewing data is stored in the ROM 53. The entire operation program and sewing data for standard type work cloth are stored in advance.

Further, the CP tJ 51 is connected via an input boat 54 to a suit start switch 55, a sewing end switch 56 for detecting the end of the sewing cycle, and a workpiece cloth conveyance speed adjustment switch 5.
1 are connected to each other. Further, first and second drive circuits 59 and 60 are connected to the CPU 51 via an output port 58, and the first drive circuit 59 operates a solenoid 61 for starting the sewing machine and a cylinder 40 for pushing up the unloading device 32. The control valve 62 and the product tl
In addition to driving the mounting table valve 63 and the clamping rod valve 64, which control the operation of the cylinder units 47 and 48 of the device 41, the electric I! I3
It is designed to also drive 5. On the other hand, the second drive circuit 60 indicates the rotational speed state of the unloading motor 35, and this is indicated by a light emitting diode labeled with the letters "high speed, 1,""appropriatespeed," and "low speed" in order. [[Port 1 is connected to a display circuit 65 consisting of LED2 and LED3.

66 is an encoder as a detection means connected to the electric motor 35 for carrying out, which detects the number of revolutions of the electric motor 35 for carrying out. It has a well-known configuration consisting of a photocoupler 69. A counter circuit 70 is connected between the encoder 66 and cpusi, and CPLJ5
1 monitors that the number of pulses input from the encoder 66 to the counter circuit 70 has reached a predetermined value, and controls the loading table valve 63 and the clamping rod valve 64 of the loading device 41.
The unloading motor 3 is controlled based on the number of pulses input from the encoder 66 to the counter circuit 70 when the workpiece cloth conveyance speed adjustment switch 57 is opened.
5, and this rotation speed N is stored in advance in RAM52.
The light emitting diode of the display circuit 65 is selectively activated via the output port 58 and the second drive circuit 60 by monitoring whether the value is within the stored numerical value range. It has become. Reference numeral 71 denotes a control means connected between the unloading motor 35 and the first drive circuit 59, which includes a variable electric resistor 72, and is connected between the unloading motor 35 and the first drive circuit 59.
The rotation speed is adjusted.

Next, the operation of the above configuration will be explained mainly regarding the unloading device and the loading device 41.

First, when the power is turned on, the workpiece cloth conveyance speed vA node switch 57
is open, cloth feeding by the first and second presser mechanisms 16 and 17 and sewing by the cycle sewing machine 4 are repeated on the work table 1, and a button is attached to the sewing location P of the workpiece cloth 9. 8 is sewn. In this case, the unloading device 32 and the loading device 41 are in a state where the unloading belt 39 of the former is rotated upward by the push-up cylinder 40 and separated from the work table 1, as shown by the solid line in FIG. 3(a). , the latter mounting table 45 and clamping rod 46 occupy a first position inclined to the left while in contact with each other.

When the cycle sewing machine 4 finishes sewing the final button 8 in this state, the carry-out belt 39 of the carry-out device 32 is rotated downward by the push-up cylinder 40 as shown by the two-dot chain line in FIG. 3(b). The work cloth 9 is held on the work table 1, and the carry-out belt 39 is rotated by the drive of the electric motor 35 to transport the work cloth 9 in the direction of the arrow. Accordingly, the clamping rod 46 of the loading device 41 is moved to the cylinder unit 4.
8, it moves in the direction away from the mounting table 45 and is located at the release position.

When the fabric 9 is further transferred and the intermediate portion almost reaches the side of the mounting table 45 as shown by the solid line in FIG. The work cloth 9 is rotated to the operating position and the work cloth 9 is held therebetween. In this state, the cylinder units 47 and 48 rotate the 4X stand 45 and the holding rod 46 integrally to the second position as shown by the two-dot chain line in FIG. 3(b). When the workpiece cloth 9 is completely unloaded from the work table 1 as shown by the solid line in FIG. is,
The work cloth 9 falls due to its own weight and is placed on the mounting table 45 in a folded state.

Next, the processing of the CPU 51 when the work cloth conveyance speed adjustment switch 57 is closed when the power is turned on will be explained based on the flowchart of FIG.

When it is confirmed in step S1 after the power is turned on that the work cloth conveyance speed adjustment switch 57 is open, the process proceeds to step S2.
Here the light emitting diode LE old, L[D2, and LED
3 is confirmed, and the unloading motor 35 of the unloading device 32 is energized via the first drive circuit 59 in step S3. In step S4, it is confirmed that the counter number of the counter circuit 70 is O. Thereafter, in step S5, the number of pulses from the encoder 66 is started to be calculated, and at the same time, a timer is set in step S6. When a predetermined time 1 (sec) has elapsed by the timer, calculation of the number of pulses is stopped in step S7, and the number of pulses P is obtained in step S8. Next, in step S9, since the number of through holes 67 in the rotary disk 68 of the encoder 66 is D, the rotation speed of the unloading motor 35 is determined as N = (P/D)/T (rl
)S) is calculated by the formula.

Subsequently, in step SIO, the rotation speed N of the electric motor 35 calculated in step S9 is compared with a preset minimum value N1, and if N1 > N, the second drive circuit 60 controls the display circuit. 65 light emitting diode L
The EDI is energized and displays the "speed rate". Further, if Nl > N is not determined in step S10, step 31
1, the rotation speed N of the unloading motor 35 is compared with the preset maximum value N2, and N2
<N, the second drive circuit 60 energizes the light emitting diode LED3 of the display circuit 65 to display "high speed". Also, in step 311, N2
If it is not <N, the second drive circuit 60 energizes the light emitting diode LED2 of the display circuit 65 to display [appropriate speed, Table 3 of 1]. Then, when the light emitting diode displays "Speed rate 1" in step SIO and "Speed high" in step S11, the process returns to step S4 while adjusting the variable electric resistor 72 of the control means 71 to display the counter. The circuit 10 recalculates the number of pulses from the encoder 66 and energizes the light emitting diode LED2 of the display circuit 65 to display "Speed Appropriate". Therefore, the rotational speed N of the electric motor 1!135 for carrying out can be quickly controlled within the appropriate range between the preset minimum value N1 and maximum value N2 by a simple operation of controlling the control means 71 by wA. Although a light emitting diode is used for the display circuit 65 in the above embodiment, a liquid crystal or a lamp may be used instead of the light emitting diode. others,
In concrete implementation, various changes may be made without departing from the gist.

[Effects of the Invention] As described above, according to the present invention, the rotational speed of the electric motor of the unloading device, and thus the rotational speed, can be quickly adjusted to an appropriate value by simply adjusting the control means, so that the manufacturing site can be easily adjusted. It is possible to provide a work cloth conveyance mechanism for a sewing machine that improves productivity in the case of sewing machines and improves serviceability after delivery.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is a block diagram of an electric circuit, Fig. 3 is an explanatory diagram of the operation of the loading device, and Fig. 4 shows the operation of the CPU. It is a flowchart. In the figure 1...Work table 4...Cycle sewing machine 15...Fabric transfer device 1G, 17...First and second cloth presser mechanisms 32...Carry-out device 35...
Unloading motor 41... Loading device 66... Encoder (detection means) 71... Control means

Claims (1)

[Claims] A work table (1); a cycle sewing machine (4) capable of sewing buttons or overholes installed on the work table (1); and a cycle sewing machine (4) placed on the top surface of the work table (1). It is equipped with a presser mechanism (16), (17) for holding and releasing the workpiece cloth (9), and by moving it along the upper surface of the work table (1), multiple sewing points on the workpiece cloth (9) can be sewn. Fabric transfer device (15) that sequentially transfers (P) to the needle drop point of the cycle sewing machine (4)
And, a work table (
1) A carry-out device (32) that further carries out the work cloth (9) disposed above and fed out from the cloth transfer device (15) in the same cloth feed direction by driving an electric motor (35), and a work table (1). It is installed below the unloading device (32) so that it can be driven reciprocally between two positions sandwiching the downward movement path due to its own weight of the work cloth (9) unloaded from the unloading device (32). In the sewing device, the electric motor (3) of the unloading device (32)
5) Detection means (66) for detecting to notify the rotation speed of
and a control means (71) that adjusts the rotational speed of the electric motor (35) of the unloading device (32) in order to match the unloading state of the unloading device (32) with the reciprocating operation of the loading device (41) based on the detection means. ).