JPS63264961A - Hook machine - 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] [Field of Application] The present invention relates to a pile yarn cutting device for a hook machine, particularly a hook machine for loop piles, in which the scissors operate only when the hook machine is stopped. and
When weaving into a loop pile, the pile yarn is automatically cut at the end of the embroidery area in one step, and the workability of loop pile weaving using a hook machine is improved.

[Prior art and its problems] In carpet embroidery weaving, pile threads are woven using a hook machine.This hook machine has an appearance as shown in Figure 6 and a main body (^ ), the scissors (22
), a crow opening (21), and a pushing piece (23) that move forward and backward (2) are operated, and loop pile weaving and cut pile weaving can be performed by following the locus of the hook machine on the base fabric.

The configuration of this hook machine is as follows.

As shown in Figure 7, the crow opening (21) is linked to one crank mechanism (12), and the other scissors (22)
The pushing piece (23) and the pushing piece (23) work together with the other crank mechanism (11), and move forward and backward at predetermined timing. The crow opening (21) is a cylindrical body whose tip is cut diagonally.
A presser spring (24) made of a plate spring is attached to its inner surface, and its attached end is located near the opening (25) for passing the pile thread, which is opened in the glass opening (21). Further, the scissors (22) and the tip of the pushing piece (23) are housed in the glass opening (21) so as to be able to move forward and backward,
The proximal end of the crow opening (21) and the proximal end of the combined body of the scissors (22) and the pushing piece (23) are in a pairwise relationship.

Next, the pushing piece (23) has its proximal end connected to the tip of the link (13) that serves as the output part of the crank mechanism (11), and moves in a direction opposite to the crow opening (21). It is connected to the child (14). Furthermore, the tip end side from the middle of this pushing piece (23) is bent obliquely toward the top side of the open part at the tip of the crow opening (21), and the fulcrum of the scissors (22) is located at this bent side. 26) is provided. In the main body (A) of the hook machine, at a location that coincides with the input end (27) of the scissors (22), the moving part of (27),
A guide (3) for regulating the operation of the input end is provided, and a 7-shaped cam groove (3) formed in this guide (3) is provided.
1), the input end (27) of the scissors (22), (27
) are engaged.

In addition, in order to fix the initial positions of the crow opening (21), the scissors (22), and the pushing piece (23) constant, as shown in FIG.
As shown in Fig. 9, the clutch (4) is connected to the crank mechanism (12
), and the operating switch and the clutch (4) are interlocked with each other. That is, the clutch (4) has a main body (A
) is mechanically interlocked with a switch lever (N) provided on the handle of the crank mechanism (12).
15) in a direction perpendicular to the rotating surface of the engaging portion (
41) and the engaging protrusion (16) of the rotary disk (15) is disengaged, and conversely, when the pushing force of the switch lever (N) is released, the clutch (4) engages the rotary disk (15). The engaging protrusion (16) and the engaging portion (41) mesh with each other by overlapping with each other.

In this conventional model, the electric motor (
1) When you start the crank mechanism (11).

(12) is driven to rotate, and the crow opening (21), the scissors (22), and the pushing piece (23) move forward and backward at predetermined timing.

Therefore, insert the pile yarn (P) from the pile yarn introduction part of the main body (^) of the hook machine, and pass this pile yarn (P) through the opening (
25) Guide the crow into the crow's mouth (21),
), the presser spring (24), and the pushing piece (23), and pull it out from the open end at the crow opening (21) and move the hook horizontally on the base fabric, as shown in Fig. 10. Through the process, the pile yarn CP) is woven into the base fabric (B).

(About cut pile embroidery) When weaving cut pile using the hook machine mentioned above, the scissors (2)
In order to operate 2), input the scissors (22) @ (2
7) and (27) are placed in a relationship to engage with the cam groove (31). Then, after the crow opening (21) enters into the base fabric (B), the pushing piece (23) and the scissors (22) move forward at a certain timing, which causes the pile yarn (P) to move into the base fabric. It is pushed into the cloth (B). At the same time, the input end (27) of the scissors (22), (2
7) is the branch groove part (32) of the cam groove (31), (32
), and the tip of the loop-shaped portion of the pile yarn (P) pushed by the pushing piece (23) is cut. After that, with the scissors (22) and push piece (23) still inserted into the base fabric (B),
The hook machine is moved and the crow opening (21) is attached to the base fabric (
As the scissors (22) and push piece (23) are inserted into the next eye of B), the scissors (22) and pusher piece (23) return to their initial state, and the series of operations described above is then repeated. By the above-described action, the pile yarn (P) can be embroidered according to the movement trajectory of the hook machine and woven into cut pile.

(Regarding loop pile embroidery) To perform loop pile embroidery using the hook machine described above, the scissors (22) are removed and used. These scissors (
22) When the pile thread (P) is embroidered on the base fabric (B) with a hook machine without a
Since there is no pile yarn cutting operation by the scissors (22), the loop-shaped portion of the pile yarn (P) folded into the base fabric is not cut, and the pile yarn ( The loop-shaped portion of P) is continuous, making loop pile embroidery possible.

However, with this conventional method, when the operation of the hook machine is stopped after completing one process of loop pile embroidery, the pile thread extending from the open end of the crow opening (21) to the base fabric (B) Since it is not possible to move on to the next embroidery process without cutting the pile thread (P), conventionally the pile thread (P) has been cut manually using separately prepared scissors, but this process is troublesome and unnecessary. . In particular, when a hook machine is run along the base fabric using a numerical control device as disclosed in JP-A No. 62-331160, cutting is performed with scissors that operate at a fixed timing in one process. After this cutting, the pile yarn (P) extending from the movable part (2) of the hook machine
There is a problem in that the length of the end portion is longer than necessary.

[Technical issues].

The present invention provides that the r-pile yarn (P) is inserted through the reciprocating movable part (2) consisting of the crow opening (21) and the pushing piece (23) by a drive source, and that the In the hook machine J, the pile thread (P) can be inserted into the base fabric (B) in a loop shape by operating each part of the advance/retreat movable part at a predetermined timing, and the loop-shaped part can be cut with scissors (22). In order to eliminate the need for cutting the pile thread every time the loop pile embroidery in one process ends, the pile thread pulled out from the advancing/retracting movable part (2) is cut automatically at the end of the one process embroidery. The technical challenge is to make it possible.

[Technical Means] The technical means of the present invention taken to solve the above technical problem is to provide a pile yarn (P
) is provided, and a control means is provided for switching the scissors (22) from an inactive state to an active state, and a signal from a start/stop operation section of the hook machine is sent to the control means. and when a signal corresponding to a stop operation of the hook machine is input, the control means is brought into operation.

[Effect] The above technical means of the present invention operates as follows.

The hook machine of the present invention is used in the same way as a conventional hook machine for embroidering loop piles. During the embroidery work, the operating section of the hook machine is in the operating state and the scissors (22) are placed in an inactive state, and the operation for the loop pile described above progresses, and the pile thread (P) Base fabric (B
) is inserted in a loop shape and progresses under the embroidery work force of the loop pile. When one step of embroidery is completed, when an operation is performed to stop the hook machine, the signal at this time is input to the control means, the scissors (22) are switched to the operating state, and the scissors (22) are moved to a predetermined position. The action cuts the looped portion of the pile yarn at its top. In other words, when the hook machine is stopped when it reaches the end point of the embroidery area of one process, the pile thread CP extended from the reciprocating cylinder (2) is automatically cut at this point. becomes.

[effect] Since the present invention has the above configuration, it has the following unique effects.

When the hook machine is stopped when it reaches the end of the embroidery area for one process, the pile thread (P
) has been automatically cut at this point, so there is no need to cut the pile thread every time one step of embroidery is completed, improving work efficiency. This is particularly effective when used in an embroidery machine using an NC device as disclosed in Japanese Patent Application Laid-open No. 62-33860. There is an advantage that the length of the pile yarn (P) extending from the pile yarn (P) is shortened.

[Embodiments] Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 to 5.

The first embodiment shown in FIGS. 1 to 3 uses a cam body (33) provided as a control means to be freely retractable between the branch grooves (32) and (321) of the guide (3), and a cam body (33) that moves the cam body forward and backward. A combination with a solenoid (53) for operation is adopted.

The guide (3) has the same structure as the guide (3) of the conventional example described above and is provided in the main body (8) of the hook machine, and the branch groove (32) in the guide (3) of the conventional example
) and (32) is constructed as a separate cam body (33), and this cam body (33) is moved in and out by a solenoid (53).

Therefore, when the solenoid (53) is in operation and the cam body (33) is advanced,
The cam groove (31) is in a state where the branch grooves (32), (32) are formed, and conversely, when the solenoid (53) is in a non-operating state, the spring interposed between the solenoid (53) (54) returns to the initial position, and the tip surface of the cam body (33) and the cam groove (3
1) coincides with the bottom of the branch grooves (32) and (32
) is not formed.

The solenoid (53) and electric motor (1) are connected to the main body (^
) The operation is controlled by a switch (S) whose contacts are switched by a switch lever (N) provided on the handle of the switch (S), and the solenoid (53) is connected to the normally closed contact side of the switch (S). A motor (1) is connected to the other normally closed contact side. In addition, the solenoid (5
In the circuit to 3), the first normally open output contact (TI) of the timer (T), which becomes operational when the normally closed contact is closed, is inserted, and the normally closed contact side of the switch (S) is inserted. A second normally open output contact (T,) is connected to the circuit connected to the motor (1) from
are inserted, and these contacts close when the timer (T) is activated, and return to the open state after the set time of the timer (T) has elapsed.

In addition, the movable cylinder (2) and the clutch (4) other than the above configuration
) and the drive mechanism using the electric motor (1), other than the guide (3) in FIG. 7, are constructed in the same manner as the conventional hook machine described above.

In the first embodiment with the above configuration, the switch lever (
When N) is pushed in, the motor (1) becomes conductive and the solenoid (53) becomes non-conductive. In this state, when the main body (^) is run along the base fabric (B), the same operation as loop pile embroidery using a conventional hook machine proceeds, and as shown in Figure 3, (P) will be folded into the base fabric (B). When one step of this embroidery process is completed and the pushing force of the switch lever (N) is released, the contacts of the switch (S) linked with the switch lever (N) are switched, and the circuit on the timer (T) side is turned on. conduction, thereby reducing its N1. The second normally open output contact (TI), (TI) is closed, the solenoid (53) is activated for the set time of this timer (T), and the operation of the electric motor (1) continues for the set time. . As a result, the cam body (33) connected to the output shaft of the solenoid (53) advances to form branch grooves (32), (32) in the guide (3), and by the action of the drive m structure, the scissors (22) is activated, and the loop-shaped portion of the pile yarn (P) is cut.

After the set time HA of the timer (T), the first. Since the second normally open output contact (it), (T2) returns to the open state, the cam body (33) is returned to the initial position by the biasing force of the spring (34), and the branch groove portions (32), (32) ) disappears and the moving part (2) moves back and forth, the scissors (
22) will be left inactive. The timer (T) may be set to the time required for the rotating disk (15) to rotate once.

Also, as shown in Figure 1, if a changeover switch (50) in parallel with the switch (S) is connected to the circuit of the solenoid (53), cut pile embroidery can be performed by opening this changeover switch (50). I can do it.

Afterwards, in this state, set the hook machine in the next embroidery area, press the switch lever (N) to operate the hook machine, and then run it along the base fabric (B), and the same operation as above will proceed. You can do a loop pile.

Next, in the second embodiment shown in FIG.
) from the pushing piece (23) and use this scissor (22).
The scissors (2
The input ends (27), (27) of 2) are paired with the guide (3) to form a cam mechanism, similar to the conventional hook machine described above, and when the fulcrum part of the scissors (22) advances a certain stroke, the scissors (22) is designed to perform a cutting operation. For this reason, the scissors (22) are attached to the support piece (51), and this support piece is attached to the solenoid (
53), and the solenoid (53) is operated in conjunction with the operation of the switch lever (N) as in the first embodiment.

That is, while the hook machine is in operation, the timer (T) circuit is in a non-conductive state and the solenoid (53) is in a non-output state. When one step of embroidery work is completed, the switch lever (N) is returned to the initial state, and the timer (
The circuit to T) becomes conductive and the solenoid (53) becomes an output state, and the scissors (22) advance and perform one cutting operation, cutting the pile yarn inserted into the base fabric (B) in a loop shape. (
P) will be cut.

Next, in the third embodiment shown in FIG. A clamping means (6) is provided, and the clamping means is linked to the start/stop operation of the hook machine, and this interlocking relationship is maintained at least until the hook machine is stopped. This is one set so that it is in a pinched state.

In this embodiment, when an operation is performed to stop the hook machine, the clamping means (6) enters the clamping state, and further withdrawal of the pile yarn (P) is stopped, and from this point on, the hook machine starts operating. Until the stop, the pile yarn CP
), the operation of the crow opening (21), the scissors (22) and the pushing piece (23) is guaranteed, and the scissors (22)
) After the pile yarn (P) is cut by the action of , each part returns to its initial state.

Therefore, after the hook machine is stopped, the clutch (4)
functions, the engagement protrusion (16) and the engagement part (41) engage, and the rotation of the rotation disk (15) continues until the rotation of the rotation disk (15) is stopped. thread(
Since further withdrawal of P) is prevented, the initial length L) of the pile yarn (P) protruding from the opening (21) when each part of the advancing/retracting movable part (2) is in its initial state is ) is shorter than the conventional one, and there is no long pile part at the start of the embroidery. In other words, there is no need for post-processing such as finishing and cutting the long pile yarn (P) as in the conventional method. become. This is particularly useful in the case of a device in which the hook machine is moved according to a predetermined movement trajectory by means of an NC device.

In addition, in this third embodiment, in order to realize the above effect,
As the clamping means (6), a pair of clamping claws (61), (
62), one clamping claw (61) is fixed and the other clamping claw (62) is movable.
62) is constantly biased in the clamping direction by a spring (63),
The pile thread (
P) is inserted through it. In addition, these clamping claws (δI
), (52) are attached to a part of the main body (^) and are linked to the start/stop switch lever (N) provided on the handle of the main body (A). In order to realize this interlocking, in this embodiment, the above-mentioned clamping claws (
62) and the switch lever (N) (62)
Connect by pressing the switch lever (N),
The clamping claws (6
1) and the clamping claw (62) are opened.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of main parts of a first embodiment of the present invention. Figure 2 is an explanatory diagram of the operation, and Figure 3 is an explanatory diagram 2 of the embroidery operation.
FIG. 4 is an explanatory diagram of the main parts of the second embodiment. FIG. 5 is an explanatory diagram of the main part of the third embodiment, and FIGS. 6 to 10 are explanatory diagrams of the conventional example. (2)...Moving forward/backward part (21)...Crow opening (22)...Scissors (23)...Pushing piece (A)...Main body (B)...Base fabric (P )...Pile thread

Claims (1)

[Claims] The pile thread (P) is inserted through the movable movable part (2), which is made up of a crow opening (21) and a pushing piece (23), and is moved forward and backward by a drive source, and each part of the movable movable part is operated at a predetermined timing. By this, pile yarn (P
) is inserted into the base fabric (B) in a loop shape, and the pile yarn (
A pair of scissors (22) for cutting the loop-shaped portion of P) is provided, a control means is provided for switching the scissors (22) from an inactive state to an active state, and the control means receives a signal from the start/stop operation section of the hook machine. The hook machine is configured such that when a signal corresponding to a stop operation of the hook machine is inputted, the control means becomes in an operating state.