EP2657384A1

EP2657384A1 - Torchon lace machine

Info

Publication number: EP2657384A1
Application number: EP11850799.5A
Authority: EP
Inventors: Michihiro Ichikawa
Original assignee: Ichikawa Iron Works Co Ltd
Current assignee: Ichikawa Iron Works Co Ltd
Priority date: 2010-12-22
Filing date: 2011-11-10
Publication date: 2013-10-30
Anticipated expiration: 2031-11-10
Also published as: CN103270206A; EP2657384A4; JP5652821B2; JP2012132128A; KR101852220B1; KR20140004139A; WO2012086117A1; EP2657384B1; CN103270206B

Abstract

A torchon lace machine capable of immediately taking treatments such as stopping the torchon lace machine, preventing a damage of rotor metals, reducing damages of various kinds of components transmitting rotation to the rotor metals, preventing a pattern disorder, when rotation errors occur at a spindle due to a collision of adjacent rotor metals caused by a timing disorder, getting caught of a working wear of an operator, getting caught of broken threads to the spindle, is provided. In the torchon lace machine according to the present invention, a transmission gear 6 transmitting a drive force from a motor drive part to a horizontal shaft 4 driving rotor metals 3 rotatably fitted to vertical shafts 2 in a horizontal direction is provided, in which the vertical shafts 2 are annularly disposed at a base 1 with a predetermined interval, an axial core part of the transmission gear is divided into a horizontal shaft transmission side and a motor drive part transmission side, a cam is formed at the divisional surface to make the motor drive part side move upward against a spring pressure for a load from the horizontal shaft side, and to be integrated for a load from the motor drive part side, and a sensor monitoring the moving upward of the transmission gear is provided.

Description

TECHNICAL FIELD

The present invention relates to a torchon lace machine corresponding to various kinds of causes generating rotation errors of rotor metals moving spindle runners, and capable of reducing damages of various kinds of components transmitting rotation to the rotor metals and preventing a pattern disorder and so on beforehand.

BACKGROUND ART

In general, in a torchon lace machine, rotor metals are disposed on the same circle, a spindle runner is interposed between arc concave parts of the rotor metals, and each rotor metal rotates the spindle runner for 180 degrees in the facing arc concave parts of right and left adjacent rotor metals to be exchanged and to move for one step.
When the spindle runner is continuously moved for several steps, a spindle runner S existing at a position "a" moves for one step by passing through a trace (inward turning) of a dotted arrow A' to be at a position "b" by a rotation of a rotor metal A in a right direction for 180 degrees as indicated by an arrow as illustrated in Fig. 5. In this case, a spindle runner S' originally existing at the position "b" moves to the position "a" to be exchanged. Next, the spindle runner S' moves for one step by passing through a trace (outward turning) of a dotted arrow B' from the position "b" to be at a position "c" when a rotor metal B rotates in a left direction for 180 degrees as indicated by an arrow. Subsequently, it is sequentially repeated to move for one step by passing through a trace (inward turning) of a dotted arrow C' from the position "c" to be at a position "d" when a rotor metal C rotates in a right direction for 180 degrees as indicated by an arrow.
In the above-stated torchon lace machine, one rotor metal rotates for 180 degrees to repeat exchanging operation of the spindle runner during a period when the right and left adjacent rotor metals stop while facing the arc concave parts thereof. However, it is important that stop angles of one rotor metal and the adjacent rotor metal are constantly coupled at a good timing, and it is especially important for a torchon lace machine in which a rotation direction of the rotor metal can be arbitrary selected. A disorder of the timing may generate a rotation error due to collision of the rotor metals. Besides, a thread breakage of threads drawn from a number of bobbins mounted on the spindle runner and gathered at a lace formation part may occur, and there have been a rotation error generated because a part of a working wear of an operator repairing the thread breakage is caught in the spindle and so on, a rotation error generated because the broken threads are caught in a bobbin spindle like a spider's web, or the like.

Prior Art Document

Patent Document

Patent Document 1: Japanese Unexamined Patent Application Publication No. H8-284051

DISCLOSURE OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

However, when the rotation of the rotor metal is forcibly stopped resulting from the rotation error due to the collision of the rotor metals, the rotation error generated during the repair of the broken threads, the rotation error generated because the broken threads are caught in the bobbin spindle, or the like, serious damages are given to various kinds of components transmitting the rotation to the rotor metals. Accordingly, it is necessary to reduce the damages and so on as much as possible, but currently, there is no effective reduction treatment.
The present invention is made to correspond to the above-stated problems, and a proposition thereof is to provide a torchon lace machine immediately corresponding to the rotation error due to the collision of the adjacent rotor metals resulting from the timing disorder, the rotation error generated because a part of the working wear of the operator is caught in the spindle and so on, and the rotation error generated because broken threads are caught in the spindle, and so on, and capable of reducing damages of various kinds of components transmitting rotation to the rotor metals and taking a treatment preventing from occurring a pattern disorder and so on beforehand.

MEANS FOR SOLVING THE PROBLEMS

To attain the above-stated proposition, a torchon lace machine according to the present invention includes a transmission gear transmitting a drive force from a motor drive part to a horizontal shaft driving rotor metals rotatably fitted to vertical shafts in a horizontal direction, in which the vertical shafts are annularly disposed at a base with a predetermined interval, a divisional surface between a horizontal shaft coupled body and a motor drive part coupled body provided at an axial core part of the transmission gear, a cam formed at the divisional surface, to make the motor drive part coupled body move upward against a spring pressure for a load from the horizontal shaft side, and to be integrated for a load from the motor drive part coupled body, and a sensor monitoring the moving upward of the motor drive part coupled body. It is made to normally continue the transmission for an addition at the motor drive part side, and to stop the transmission by means of a cam operation of the axial core part of the transmission gear for a trouble at the rotor metal side so as not to give serious damages on components transmitting rotation to the rotor metals.
In the torchon lace machine according to the invention described in claim 2, the cam is made by forming slopes and step parts. It is made such that the cam operation is stopped by making the slopes slide and run on with each other for a load from the rotor metal side, and is maintained as it is in a transmission state for the load from the motor drive part side.
In the torchon lace machine according to the invention described in claim 3, the sensor outputs a stop signal to the motor drive part. It is made such that it is possible to immediately stop the machine when rotation errors and so on generated by a collision of the rotor metals and during repair of broken threads occur.
In the torchon lace machine according to the invention described in claim 4, the spring is interposed between a thrust bearing fitted to the axial core part of the transmission gear and a top collar of a couple-extended shaft stood up from a top face of the axial core part. It is made such that the cam operation of the cam formed at a divisional surface of the axial core part is constantly maintained.

EFFECTS OF THE INVENTION

According to the present invention, it is possible to transmit the normal rotation to the rotor metals for the addition from the motor drive part side, on the other hand, the transmission is stopped by disengaging the cam formed at the axial core part of the transmission gear in case of the trouble at the rotor metal side so as not to give serious damages on the various kinds of components transmitting the rotation of the rotor metals. Accordingly, various kinds of excellent effects can be obtained such that it is possible to momentarily reduce a large force transmitted to the horizontal shaft to drive the rotor metals, and also it becomes possible to monitor whether or not the cam operation is stopped because the cam at the axial core part of the transmission gear is disengaged, even if there are the error due to the collision between one rotor metal and right and left adjacent rotor metals, the rotation error generated because a part of the working wear of the operator is caught in the spindle and so on, the rotation error generated because broken threads are caught in the spindle, and so on.
Besides, according to the invention described in claim 2, there is an excellent effect in which it is possible to quickly and smoothly correspond to the rotation errors of the spindle generated due to the collision of the rotor metals, getting caught of the working wear of the operator to the spindle, getting caught of the broken threads to the spindle, and so on because the slopes slide and run on for the load from the rotor metal side, and the transmission state is continued and held for the load from the motor drive part side.
Further, according to the invention described in claim 3, there is an excellent effect in which it is possible to immediately stop the machine when the rotation errors and so on generated due to the collision of the rotor metals and during the repair of the broken threads occur, and there is no possibility of generating a pattern disorder and so on.
Further, according to the invention described in claim 4, there is an excellent effect in which a reaction for the trouble at the rotor metal side is extremely fast because the force is applied in a direction in which the cams formed at the divisional surface of the shaft of the transmission gear are engaged with each other.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a side sectional view illustrating a substantial part of a driving part of a rotor metal.
Fig. 2 is an enlarged sectional view illustrating a mechanism transmitting a drive force of a motor drive part to a horizontal shaft driving the rotor metals.
Fig. 3 is an explanatory view of a cam.
Fig. 4 is an enlarged sectional view at a sensor sensing time.
Fig. 5 is an explanatory view illustrating an operation of the rotor metals and a moving state of spindle runners.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, an embodiment of the present invention is described. Fig. 1 is a side sectional view illustrating a driving part of a rotor metal, Fig. 2 is an enlarged sectional view illustrating a mechanism transmitting a drive force of a motor drive part to a horizontal shaft driving the rotor metals, Fig. 3 is an explanatory view of a cam, Fig. 4 is an enlarged sectional view at a sensor sensing time, and Fig. 5 is an explanatory view illustrating an operation of the rotor metals and a moving state of spindle runners.
Vertical shafts 2 are annularly disposed along an outer peripheral part 1' of a base 1 of a torchon lace machine T with a predetermined interval, and a rotor metal 3 is rotatably fitted to the vertical shaft 2 in a horizontal direction and it is fixed by a pin 2'. Bevel gears 12 are fixed to the vertical shaft 2, and they are engaged with bevel gears 13, 14 of a horizontal shaft 4 so as to receive normal and reverse rotations from the horizontal shaft 4. The horizontal shaft 4 is coupled to a spur gear 6a making up a transmission gear 6 engaged with a driving gear (large spur gear) 5 receiving a drive from a motor drive part (not-illustrated). The driving gear 5 bears only plural pieces (for example, eight pieces) of the horizontal shafts 4, and the horizontal shafts 4 are distributed to plural pieces of driving gears as a whole.
The transmission gear 6 is made up of the spur gear 6a engaged with the driving gear 5, bevel gears 6b provided at a lower surface thereof to be capable of coupling and rotating, and an axial core part 6c common to the above. The axial core part 6c is pivotally supported by a shaft bearing means 1 b fixed to the base 1 by a fastening means 1 a. The bevel gear 6b is attached to the axial core part 6c via a bearing 6b', and engaged with a bevel gear 7 provided at an end part of the horizontal shaft 4. In other words, the spur gear 6a coupled to the driving gear 5 is coupled to the horizontal shaft 4 via the bevel gears 6b, 7 to drive the rotor metal 3 together with the vertical shaft 2 via the bevel gears 14, 12.
The axial core part 6c being a common axis of the spur gear 6a and the bevel gears 6b making up the transmission gear 6 is divided in a horizontal direction at downward of a motor drive part coupled body (spur gear 6a) and at upward of a horizontal shaft coupled body (bevel gear 6b) to make up a divisional surface 8 (refer to Fig. 2). An upper side of this divisional surface 8 is a convex part having a slope 9a and a step part 9b, and a lower side thereof is a concave part having a slope 9a' and a step part 9b', and they are engaged. Note that two pieces of the slopes 9a, 9a' and the step parts 9b, 9b' are provided to face at a periphery of the divisional surface 8 of the axial core part 6c. It goes without saying that the number is not limited to two pieces.
As a result, when troubles (for example, a collision of the rotor metals, getting caught of a working wear of an operator to a spindle, getting caught of broken threads to the spindle, and so on) occur at the horizontal shaft 4 side to stop the rotation of the rotor metal, a load is applied to the bevel gear 6b. In such a case, the slope 9a at the upper side slides and runs on the slop 9a' at the lower side, and a cam operation is stopped, and therefore, the spur gear 6a coupled to the motor drive part coupled body moves upward against a spring pressure of a later-described spring (coil spring) 10. On the other hand, the step part 9b at the upper side and the step part 9b' at the lower side are integrated and continue transmission as they are for a load from the motor drive part coupled body.
The spring (coil spring) 10 is interposed between a thrust bearing 10a fitted in a concave groove 6a' formed along the axial core part 6c at an upper surface of the spur gear 6a making up the transmission gear 6 and a top collar 10c of a couple-extended shaft 10b stood up from a top face of the axial core part 6c under a compressed state. Accordingly, the thrust bearing 10a presses the spur gear 6a from the upper surface toward downward so that the slopes 9a, 9a' and the step parts 9b, 9b' of the cam 9 engage with each other. Note that a top collar of a cylinder body 10d screwed shut at the couple-extended shaft 10b is used as the top collar 10c in Fig. 2. The cylinder body 10d is effective to prevent the spring from moving violently because an inner periphery of the spring 10 is in close contact with the cylinder body 10d.
A sensor 11 is provided to monitor a change due to moving upward of the spur gear 6a when the horizontal shaft 4 side generates the load due to the trouble, the slope 9a at the upper side slides and runs on the slope 9a' at the lower side, and the spur gear 6a coupled to the motor drive side moves upward against the spring pressure of the spring 10. The sensor 11 is attached to a prop member 11' provided at the base 1 and faces the spur gear 6a. Namely, the sensor 11 is activated when the spur gear 6a comes close for a degree of moving upward "h" generated when the slope 9a runs on the slope 9a' as illustrated in Fig. 4. As a result, a sense of the sensor 11 outputs a stop signal to the motor drive part (not-illustrated) to immediately stop the machine so as not to generate a pattern disorder and so on.
Next, operations of the torchon lace machine according to the present application are described. At first, the driving gear 5 coupled from the motor drive part rotates, then the spur gear 6a making up the transmission gear 6 engaged with the driving gear 5 rotates centering on the axial core part 6c, the step parts 9b, 9b' of the cam 9 formed at the divisional surface 8 of the axial core part 6c integrally rotate under an engaged state, the bevel gear 6b rotates the horizontal shaft 4 via the bevel gear 7 to normally rotate the rotor metal 3. The rotation of the rotor metal 3 moves a spindle runner 15, a bobbin 16 mounted on the spindle runner 15 moves, and threads 1 7 drawn out of the bobbin 16 intertwines at a lace formation part (not-illustrated) to knit a lace knitted fabric.
Next, when the rotation error of the rotor metal generated due to the collision with the adjacent rotor metal because rotation timings of the rotor metals moving the spindle runner are disordered, the rotation error of the spindle generated because a part of the working wear of the operator is caught in the spindle and so on, the rotation error of the spindle generated because the broken threads are caught in the bobbin spindle like a spider's web, and so on occur during the lace knitting, the slope 9a at the upper side of the cam 9 formed at the divisional surface 8 of the axial core part 6c slides and runs on the slope 9a' at the lower side, and the spur gear 6a coupled to the motor drive side is moved upward against the spring (coil spring) 10, the sensor 11 sensing the moving upward outputs the stop signal to the motor drive part to stop the torchon lace machine, and thereby, it becomes possible to reduce the damage of the rotor metal, the damages added to various kinds of components transmitting the rotation to the rotor metals, and to prevent the pattern disorder and so on of the lace in advance.

INDUSTRIAL APPLICABILITY

The torchon lace machine according to the present application stops the torchon lace machine when the rotation error of the rotor metal moving the spindle runner occurs to prevent the damage of the rotor metal, reduce the damages of the various kinds of components transmitting the rotation to the rotor metals, and prevent the pattern disorder and so on in advance, and industrial applicability is thereby enhanced.

REFERENCE SIGNS LIST

1: base
1a: fastening means
1b: shaft bearing means
2: vertical shaft
3: rotor metal
4: horizontal shaft
5: driving gear (large spur gear)
6: transmission gear
6a: spur gear
6b: bevel gear
6b': bearing
6c: axial core part
7: bevel gear
8: divisional surface
9: cam
9a, 9a': slope
9b, 9b': step part
10: spring (coil spring)
10a: thrust bearing
10b: couple-extended shaft
10c: top collar
10d: cylinder body
11: sensor
11': prop member
12: bevel gear
13, 14: bevel gear
15: spindle runner
16: bobbin
17: drawn thread

Claims

A torchon lace machine, comprising:
a transmission gear transmitting a drive force from a motor drive part to a horizontal shaft driving rotor metals rotatably fitted to vertical shafts in a horizontal direction, in which the vertical shafts are annularly disposed at a base with a predetermined interval;

a divisional surface between a horizontal shaft coupled body and a motor drive part coupled body provided at an axial core part of the transmission gear;

a cam formed at the divisional surface, to make the motor drive part coupled body move upward against a spring pressure for a load from the horizontal shaft side, and to be integrated for a load from the motor drive part coupled body; and

a sensor monitoring the moving upward of the motor drive part coupled body.
The torchon lace machine according to claim 1, wherein
the cam is made by forming slopes and step parts.
The torchon lace machine according to claim 1 or claim 2, wherein
the sensor outputs a stop signal to the motor drive part.
The torchon lace machine according to any one of claims 1 to 3, wherein
the spring is interposed between a thrust bearing fitted to the axial core part of the transmission gear and a top collar of a couple-extended shaft stood up from a top face of the axial core part.