JPH089190Y2 - Flocked sewing machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is used mainly for mats such as kitchen mats, entrance mats, automobile mats, etc., by stacking pile yarns on a base fabric and implanting the piles. The present invention relates to a flocked sewing machine used for manufacturing a tufted pile fabric.

[Conventional technology]

In order to draw a colorful pattern on the tufted pile fabric, it is only necessary to partially lay the pile yarns of different colors. For that purpose, the planting site of the base cloth is changed according to the design, but in that case, the work to temporarily stop the hair transplant sewing machine and the pile that continues from the base cloth to the needle by locking it with the looper immediately before stopping. A series of operations including a work of cutting an empty yarn portion of the yarn to separate the base cloth and the needle and a work of moving the base cloth and restarting the planting are performed.

[Problems to be solved by the invention]

However, since many tufted pile fabrics used for mats are designed with different colored pile yarns, the planting site change work is frequently performed, and the series of these work is complicated by hand. I don't get a chance.

In that case, immediately before stopping the flocking sewing machine, in order to accurately plant the pile up to the contour of the predetermined pattern, stop the flocking sewing machine once, and then visually check the number of piles required to reach the predetermined position. It is necessary to carefully adjust the rotation speed one by one and proceed with the planting work one by one.In addition, the empty yarn reverses the crank forward and backward when it comes out of the needle base fabric and engages the looper with the knife. If you cut it by mistake, you have to further invert the crank forward and backward to engage the looper and knife until you can confirm the empty thread cut.
In order to resume pile planting work, the production of mats has to be domestically inefficient, as the motors must be squeezed by the hand until the motor reaches the desired speed. I don't get it.

[Purpose of device]

Therefore, the present invention intends to provide a hair-implanting sewing machine that can quickly perform a work of changing a planting site accompanying the partial planting of the pile yarn 34.

[Constitution of device]

That is, the flocking sewing machine according to the present invention comprises a motor 20 for driving the spindle 24 thereof, an internal continuous rotation circuit, a needle upper position stop circuit, a constant angle reverse rotation stop circuit, a constant angle reverse rotation circuit and a single rotation circuit. Control device 18 that consists of a control box that sends instruction signals to the controller and a sequencer that instructs the selective transmission of those instruction signals, and a control device that turns ON / OFF the forward rotation input terminal 12 and the reverse input terminal 13. The foot switch 11, the one-turn switching terminal 15 and the reversing switching terminal 16
An input device 17 composed of a manual switch 14 which is turned on / off to give an instruction to the control device, and a foot switch
11 is attached to the lower part of the sewing machine frame,
It is characterized in that the manual switch 14 is attached to a portion above the attachment portion of the foot switch 11.

It is set in the control box; (a) The continuous rotation circuit starts the continuous rotation of the motor 20 by turning on the internal switch of that circuit; (b) The needle up position stop circuit is the internal switch of that circuit OF
By F, when the needle 22 comes out of the base cloth 27, the motor 20 is stopped when the crank 19 crosses the dead center 28. (c) The constant angle reverse rotation stop circuit is an internal switch of the circuit. ON
As a result, with the needle 22 coming out of the base cloth 27, immediately after the motor 20 stops at the time 29 when the crank 19 crosses the dead center, the motor 20 reversely rotates until the crank 19 reverses and exceeds the dead center 28. (D) The constant-angle reversing rotation circuit has the internal switch ON.
By this means, in the state where the needle 22 is pulled out from the base cloth 27, the motor 20 is started to rotate in the forward and reverse directions before and after the crank 19 crosses the dead center 28; When turned on, the crank 20 makes one revolution and the motor 20 is rotated until the needle 22 crosses the dead point 28 in the state where the needle 22 is pulled out from the base cloth 27.

Further, the sequencer (a) selects the continuous rotation circuit when the forward rotation input terminal 12 is in the ON state when the single rotation switching terminal 15 is in the OFF state, and selects the needle upper position stop circuit when the forward rotation input terminal 12 is in the OFF state. The constant angle reverse rotation stop circuit is sequentially selected, and (b) the forward rotation input terminal when the single rotation switching terminal 15 is in the ON state.
In the ON state of 12, the one rotation circuit, the needle upper position stop circuit, and the constant angle reverse rotation stop circuit are sequentially selected; (c) The inversion input terminal 13 in the ON state of the inversion switching terminal 16
The constant angle reversal rotation circuit is selected in the ON state of, and the needle upper position stop circuit and the constant angle reverse rotation stop circuit are sequentially selected in the OFF state of the reversal input terminal 16.

FIG. 1 shows a side view of a main part of the flocking sewing machine, 21 is a slider carrying a needle 22, 23 is a connecting rod for connecting the crank 19 and the slider 21, and the needle 22 is the crank 19 and the slider 21. It is driven by a reciprocating slide crank mechanism including a connecting rod 23, and a guide (not shown) provided on the frame.

A crank of a two double lever crank mechanism (not shown) that drives a looper 25 and a knife 26 is also attached to the main shaft 24 that rotates the crank 19.

The dead point (thinking point) of the crank 19 can be formed above and below the main shaft 24 through which the axial center O-O 'of the slider 21 and the needle 22 passes, and the dead point 28 (hereinafter referred to as the dead point 28 when the needle 22 is pulled out from the base cloth 27).
It is called top dead center. ) Can be on the upper side of the spindle.

The motor 20 receives some instruction to rotate and stop by turning the foot switch 11 on and off regardless of whether the manual switch 14 is turned on or off, but it is reversed with the forward input terminal 12 that turns the foot switch 11 on and off. When all of the input terminals 16 are turned off, the sequencer sequentially selects the needle upper position stop circuit and the constant angle reverse rotation stop circuit, so the motor 20 temporarily stops when the crank 19 exceeds the top dead center 28, At the same time, crank 19
Reversely rotates until it exceeds the top dead center 28, and the dead center 28
It will stop when it exceeds.

29 is a crank stop point indicating a rotation angle α at which the crank 19 rotates beyond the top dead center 29 until the motor 20 is stopped by the needle upper position stop circuit, and 30 is the constant angle. The reverse rotation stop circuit indicates the rotation angle β of the crank 19 until the motor 20 starts reverse rotation and stops beyond the top dead center 28, and shows the standby point of the crank 19, which indicates the forward rotation input terminal 12 and the reverse rotation input terminal 16. If either is turned on, the crank 19 will start to rotate from its standby point 30.

Then, when the motor 20 reverses normally and reversely by the constant angle reversing rotation circuit, the main shaft 24 oscillates back and forth within the range of the rotation angle α + β between the standby point 30 and the stop point 29, and each time it vibrates, The knife 26 meshes with the knife 26 to cut the empty yarn 31.

In that case, the crank 19 never reaches bottom dead center,
Therefore, the needle 22 vibrates slightly up and down while being pulled out from the base cloth 27.

The foot switch 11 may be attached to a portion close to the floor surface on which the flocked sewing machine is installed, and the manual switch 14 may be attached to the back side from the upper side of a moving table (not shown) of the flocked sewing machine.

A counter may be attached to the constant-angle reversing rotation circuit and the single rotation circuit of the control box.

[Effect of device]

The flocking sewing machine according to the present invention is configured as described above; (1) If the reversal switching terminal 16 is turned on, the foot switch 11 is stepped on, and the reversal input terminal 13 is turned on, the needle 22 is replaced with the base cloth 27. Looper 25 and knife 26 mesh several times until they have finished cutting the empty thread 31 without being inserted into the
27 is separated from the needle 22 and can be moved.

(2) When the one-rotation switching terminal 15 is turned on and the foot switch 11 is stepped on, the crank 19 makes one revolution each time the foot switch 11 is stepped on, and the piles 32 are planted one by one. The pile 32 can be accurately planted even just before the outline of the pattern to be drawn or just before the edge of the mat or the like.

(3) In the normal state where the piles 32 are continuously planted, the inversion switching terminal 16 and the one-rotation switching terminal 15 are turned off and the foot switch 11
The foot switch 11 is also depressed when the empty thread is cut (16) and when the piles 32 are individually planted one by one. In each of those cases, the foot switch 11 is separated from the foot switch 11. Since it is switched by the manual switch 14 attached to the site, switching mistakes and operation mistakes are avoided.

If you want to use the foot switch 11 differently depending on whether the empty thread cut (16) that reverses the motor 20 forward or backward, when continuously rotating the motor 20 forward, or when inching it, use the fulcrum 33 as a boundary. Forward input terminal on the stepping side of foot switch 11
It is preferable that 12 is provided and the inverting input terminal 13 is provided on the upper side.

(4) Until the rotation of the motor 20, the crank 19 waits at the waiting point 30 before the top dead center 28, so that the crank 19 does not start rotating from the top dead center 28, and the top dead center 28 is exceeded. Instead of starting to rotate from the stop point 29, it is biased by the inertial force that starts rotating from the standby point 30 and reaches the stop point 29, so rotate the motor 20 while pushing the crank 19 with your hand. Therefore, the pile planting work can be started smoothly.

As described above, according to the present invention, when changing the pile planting site, the inching planting work for aligning the planting position with the pattern contour,
Since a series of these operations, including the work of cutting the empty thread and the work of starting the rotation of the crank, can be performed automatically and smoothly,
The flocking sewing machine of the present invention is extremely convenient for the pile planting of the pile fabric for the mat to be partially planted.

[Brief description of drawings]

FIG. 1 is a conceptual diagram including a side view of a main part of a hair transplant sewing machine according to the present invention. 11 …… Foot switch, 12 …… Forward input terminal, 13 …… Reverse input terminal, 14 …… Manual switch, 15 …… Single rotation switching terminal, 16 …… Reverse switching terminal, 17 …… Input device, 18 ...... Control device, 19 ...... Crank, 20 ...... Motor, 21 ...... Slider, 22 ...... Needle, 23 ...... Connecting rod, 24 ...... Spindle, 25
…… Looper, 26 …… Knife, 27 …… Base cloth, 28 …… Top dead center, 29 …… Stop point, 30 …… Standby point, 31 …… Empty thread, 32 ……
Pile, 33 ... fulcrum.

Claims (7)

[Scope of utility model registration request] 1. A motor 20 for rotatably driving a main shaft 24 of a flocking sewing machine, an internal continuous rotation circuit, a needle upper position stop circuit, a constant angle reverse rotation stop circuit, a constant angle reverse rotation circuit, and a single rotation circuit to instruct the motor 20. Control device 18 consisting of a control box for sending signals and a sequencer for instructing selective transmission of those instruction signals, forward input terminal 12 and reverse input terminal 13
Foot switch 11 that turns on and off to give instructions to the control device
And an input device 17 composed of a one-turn switching terminal 15 and a manual switch 14 for turning the reversing switching terminal 16 ON and OFF to give an instruction to the control device, and the foot switch 11 is located below the sewing machine frame. Manual switch 14 attached to the site
Is attached to an area above the area where the foot switch 11 is attached. 2. The continuous rotation circuit according to claim 1 of the above-mentioned utility model registration claim, when the internal switch of the circuit is turned on,
The flocked sewing machine according to claim 1, wherein the motor 20 is continuously rotated. 3. The needle up position stop circuit according to claim 1 of the above utility model registration, when the needle 22 is pulled out from the base cloth 27 by turning off the internal switch of the circuit,
The flocking sewing machine according to claim 1, wherein the motor 20 is stopped when the crank 19 exceeds the dead point 28. 4. The constant angle reverse rotation stop circuit according to claim 1 of the above utility model registration, when the needle 22 is pulled out from the base cloth 27 by turning on the internal switch of the circuit, the crank 19 is the dead center. Immediately after the motor 20 is stopped at the time point 29, the crank 20 reversely rotates the motor 20 in the reverse direction until the dead point 28 is exceeded, and then the motor 20 is stopped. Flocked sewing machine as described. 5. The constant angle reversing rotation circuit according to claim 1 of the above-mentioned utility model registration claims, when the needle 22 is pulled out from the base cloth 27 when the internal switch of the circuit is turned on, the crank 19 is a dead center. The flocked sewing machine according to claim 1, wherein the motor 20 is started to reversely rotate before and after exceeding 28. 6. The dead center when the one-turn circuit according to claim 1 of the above utility model registration is in a state in which the crank 19 makes one turn and the needle 22 comes out from the base cloth 27 by turning on the internal switch of the circuit. The flocked sewing machine according to claim 1, wherein the motor 20 is rotated until it exceeds 28. 7. The sequencer according to claim 1 of the above utility model registration, (a) selects the continuous rotation circuit in the ON state of the forward rotation input terminal 12 in the OFF state of the one-rotation switching terminal 15, The needle up position stop circuit and the constant angle reverse rotation stop circuit are sequentially selected when the forward rotation input terminal 12 is in the OFF state; (b) The forward rotation input terminal when the one-rotation switching terminal 15 is in the ON state
In the ON state of 12, the one rotation circuit, the needle upper position stop circuit, and the constant angle reverse rotation stop circuit are sequentially selected; (c) The inversion input terminal 13 in the ON state of the inversion switching terminal 16
The constant angle reversing rotation circuit is selected in the ON state of, and the needle up position stop circuit and the constant angle reverse rotation stop circuit are sequentially selected when the reversal input terminal 16 is in the OFF state. The flocked sewing machine according to item 1.