CN218507988U - Weft knitting machine with movable sinker device - Google Patents

Abstract

The utility model provides a flat knitting machine who possesses movable sinker device can increase the progression to the stroke restriction of the side of closing of sinker board. In the middle stage, the regulating member (13) is swung by switching the cam (15) in a state where the trailing end (11 b) of the sinker plate (11) is pressed downward on the open side. When the pressing of the trailing end (11 b) is released, the trailing end (11 b) is raised by the urging force of the wire spring (12), the trailing end (11 b) engages with the intermediate regulating portion (13 c), and the entry stroke of the sinker plate (11) is regulated. When the tail end (11 b) is engaged with the minimum limiting part (13 b), the entering stroke is limited to the minimum. The maximum advancing stroke is achieved without engaging the tail end (11 b) with the minimum limiting portion (13 b) and the intermediate limiting portion (13 c).

Description

Weft knitting machine with movable sinker device

Technical Field

The present invention relates to a flat knitting machine equipped with a movable sinker device, in which a sinker plate of the movable sinker device is movable and urged by a spring so as to press down an old loop of a knitted fabric knitted at a needle bed gap.

Background

Conventionally, there is a weft knitting machine including a movable sinker device having a function of moving a sinker plate that hooks a sinker loop during knitting and pressing down an old stitch of a knitted fabric by being urged by a spring (see, for example, patent document 1). The movable sinker device switches between a closed side where the sinker plate enters the needle bed gap to press down the old stitch and an open side where the sinker plate retreats from the needle bed gap when feeding the yarn to the knitting needle. If the sinker plate is not moved on the closed side, the sinker plate may receive a reaction force of pushing up from the old stitch side to apply an excessive force to the knitting yarn. The sinker plate urged by the spring moves by the sinker plate, and the upward urging force is relaxed, so that the load on the knitting yarn can be reduced. However, switching between the open side and the closed side of the sinker plate is repeated in the knitting course, and the pressing force is repeatedly applied to the knitting yarn of the old stitch. Depending on the characteristics of the knitting yarn, the knitting yarn may be worn by repeated pressing. If the travel of the sinker plate into the mouth on the closed side is reduced, the pressing force is reduced. Patent document 1 discloses the following technique: the stroke of the closing side depression can be limited to 1 stage, and 2-stage switching can be performed depending on the presence or absence of the limitation.

[ Prior art documents ]

[ patent document 1 ] Japanese patent No. 4016028

SUMMERY OF THE UTILITY MODEL

[ problem to be solved by the utility model ]

In recent years, knitting by a flat knitting machine has become diversified, and it is necessary to switch the stroke of the sinker plate to enter the needle bed gap on the closed side in multiple stages according to the type of knitting yarn and the knitting content.

An object of the utility model is to provide a flat-bed machine that possesses movable sinker device, it can increase the progression of sinker board to the stroke restriction of closing the side.

[ MEANS FOR SOLVING PROBLEMS ] to solve the problems

The utility model provides a flat knitting machine with a plurality of movable sinker devices, the movable sinker device is provided at the tooth mouth side of a needle bed along the length direction, a sinker plate with a knitting yarn hook part at the front end side is applied with force by a spring in the direction of increasing the entering stroke to the tooth mouth, and the sinker plate can be mounted on a triangle base carriage which runs along the length direction to press the triangle base to drive in the direction of decreasing the entering stroke to the tooth mouth, which is characterized in that,

the weft knitting machine provided with the movable sinker device comprises:

a restricting member which is rod-shaped and is swingable about an intermediate shaft, one side of which is a pressure receiving portion that receives a pressing force for driving the swing, and the other side of which is formed with a minimum restricting portion that engages with a trailing end side of the sinker plate to restrict the sinker plate to at least an entry stroke to the tooth gap to be minimum and an intermediate restricting portion that is capable of restricting the movement at an intermediate stage between the minimum and maximum;

a switching cam which presses the pressure receiving portion of the restricting member to swing the restricting member, and which can switch the restriction of the entry stroke of the sinker plate in a plurality of stages; and

and the control unit controls the switching triangle and switches the entering stroke of the sinker plate.

In addition, the present invention is characterized in that the control unit controls the sinker plate to return to the intermediate stage from a position near the intermediate stage when the entering stroke of the sinker plate is switched to the intermediate stage.

In addition, the present invention is characterized by further comprising a holding member for holding the restricting member in a state of swinging at the intermediate stage.

In the present invention, the holding member holds the regulating member so as to be interposed from both sides in the direction of the swing.

Further, in the present invention, the intermediate regulating portion of the regulating member is engaged with the trailing end side of the sinker plate by abutting both surfaces.

[ MEANS FOR SOLVING PROBLEMS ] A method for producing a semiconductor device

According to the utility model discloses, the stroke that not only can make the sinker board get into the tooth mouth switches for the biggest and minimum, can also switch to the intermediate stage, consequently can increase the progression of sinker board to the stroke restriction of closing the side.

Further, according to the present invention, even if the swing of the regulating member is overtravel, the regulating member can return from the vicinity and surely shift to the intermediate stage.

In addition, according to the present invention, the swing state of the restricting member at the intermediate stage can be maintained, and the restriction of the entrance stroke of the sinker plate can be stably continued.

Further, according to the present invention, even if the regulating member swings from either the maximum side or the minimum side in the intermediate stage, the regulating member can be sandwiched so as to stop swinging.

In addition, according to the present invention, the entry stroke of the sinker plate at the intermediate stage can be reliably limited.

Drawings

Fig. 1 is a cross-sectional view of a front end portion of a needle bed, which shows a state in which a main portion of a movable sinker device 10 of a weft knitting machine 1 including the movable sinker device according to a first embodiment of the present invention is shifted so that an entering stroke of a sinker plate 11 is restricted to an intermediate stage by a restricting member 13.

Fig. 2 is a cross-sectional view of the front end portion of the needle bed, which shows a state in which the main portion of the movable sinker device 10 of the weft knitting machine 1 including the movable sinker device starts transition from the intermediate stage in which the restricting member 13 restricts the entry stroke of the sinker plate 11 to the other stage.

Fig. 3 is a cross-sectional view of the front end of the needle bed, which shows the main part of the movable sinker device 10 of the weft knitting machine 1 including the movable sinker device in a state where the minimum stage of the advancing stroke of the sinker plate 11 is restricted by the restricting member 13.

Fig. 4 is a cross-sectional view showing the front end of the needle bed in a state where the movable sinker device 10 maximizes the advancing stroke of the sinker plate 11.

Fig. 5 is a component view of the movable sinker device 10.

Fig. 6 is a diagram showing the operation of the holding member 6 in the movable sinker device 10.

Fig. 7 is a diagram illustrating control at the time of switching of the movable sinker device 10.

[ description of reference ]

Weft knitting machine with movable sinker

2. Needle bed

3. Tooth mouth

6. Yarn guide spacer

6b, 6c projection

10. Movable sinker device

11. Sinker plate

11a knitting yarn hook

11b tail end

12. Thin spring

13. 23 limiting member

13a, 23a pressure receiving part

13b, 23b minimum restriction part

13c, 23c intermediate restriction section

13c1 upper surface

13c2 inner surface

14. Limiting shaft

15. Switching triangle

16. Pressing triangle

20. Control unit

Detailed Description

Hereinafter, fig. 1 to 7 show a structure and an operation of a flatbed knitting machine 1 including a movable sinker device according to an embodiment of the present invention. In each drawing, corresponding parts are denoted by the same reference numerals, and redundant description may be omitted. For convenience of explanation, parts not shown in the drawings to be explained may be referred to by reference numerals shown in other drawings. In fig. 1 to 4, the carrier spacer 6 is arranged on the front side of the sinker plate 11 or the like which is a main part of the movable sinker device 10, but is indicated by thin lines since the protrusions 6b and 6c provided at the tail are associated with the movable sinker device 10.

[ examples ] A

Fig. 1 shows a state in which a main part of a movable sinker device 10 of a weft knitting machine 1 including the movable sinker device according to an embodiment of the present invention is shifted so as to limit an entering stroke of a sinker plate 11 to a closed side to an intermediate stage. In the weft knitting machine 1 including the movable sinker device, the needle beds 2 are disposed so as to face each other with the needle bed gap 3 therebetween, but the needle bed 2 on the opposite side is not shown. The longitudinal direction of the needle bed 2 is the depth direction of the drawing, and is formed by the base plate 4 and the needle plate 5, and also extends leftward of the drawing, but only a structure facing the tip end portion of the needle bed gap 3 is shown. The needle plates 5 are provided upright at regular intervals in the longitudinal direction of the needle bed 2. Needle grooves are formed between the needle plates 5, and knitting needles not shown are accommodated therein. A thread guide spacer 6 is also arranged between the needle plates 5.

The movable sinker device 10 is also provided in plural on the needle bed 2 needle bed gap 3 side in the longitudinal direction, that is, between the needle plates 5. The movable sinker device 10 includes a sinker plate 11, a wire spring 12, a regulating member 13, a regulating shaft 14, and a switching cam 15. The sinker plate 11 has a knitting yarn hooking portion 11a on the front end side advancing and retreating with respect to the needle bed gap 3, and is biased by a wire spring 12 in a direction to increase the advancing stroke toward the needle bed gap 3. The restricting member 13 is rod-shaped and swingable about an intermediate restricting shaft 14, and has a pressure receiving portion 13a on one side thereof for receiving a pressing force for driving the swing, a minimum restricting portion 13b on the other side thereof for engaging with the trailing end 11b side of the sinker plate 11 to restrict the sinker plate 11 at least to a minimum entering stroke toward the mouth 3, and an intermediate restricting portion 13c capable of restricting the intermediate stage between the minimum and maximum. The switching cam 15 presses the pressure receiving portion 13a of the restricting member 13 to swing the restricting member 13, and can switch the restriction of the entry stroke of the sinker plate 11 in 3 stages. The movable sinker device 10 further includes a control unit 20 that switches the entry stroke of the sinker plate 11 by controlling the switching cam 15.

The switching cam 15 swings the regulating member 13 in a state where the rear end 11b of the open-side sinker plate 11 is pressed downward in the illustrated state by a pressing cam 16 described later, thereby switching to the state of switching to the intermediate stage shown in fig. 1. When the pressing to the trailing end 11b of the sinker plate 11 is released, the trailing end 11b is raised by the biasing force of the wire spring 12, the trailing end 11b engages with the intermediate regulating portion 13c, the entry of the knitting yarn hooking portion 11a into the needle bed gap 3 is stopped, and the entry stroke is regulated.

Fig. 2 shows a state in which switching is started from the intermediate stage to the stage in which the entry stroke is maximized. When the trailing end 11b of the sinker plate 11 is pressed downward by the pressing cam 16, the pressure receiving portion 13a is pressed by the switching cam 15, and the regulating member 13 is swung clockwise about the regulating shaft 14. The engagement between the intermediate restriction portion 13c and the trailing end 11b is released.

Figure 3 shows the minimum stage of the entry stroke. The trailing end 11b of the sinker plate 11 is engaged with the minimum regulating portion 13b of the regulating member 13, and the entry stroke of the closed sinker plate 11 into the tooth mouth 3 is regulated to be minimum.

Fig. 4 shows a state in which the movable sinker device 10 of fig. 1 maximizes the closing-side entry stroke of the sinker plate 11 as shown in fig. 4 (a), and the structure of the switching cam 15 as shown in fig. 4 (b). As described above, fig. 4 (a) also shows the pressing cam 16 that presses the trailing end 11b side of the sinker plate 11. The switching cam 15 and the pressing cam 16 are mounted on a carriage, and are provided at positions out of control of a cam system for controlling the knitting needles and the sinker plate 11 to perform a knitting operation. The switching triangle 15 is controlled by the control unit 20. The control unit 20 includes a motor 21, a driving cam 22a, and an origin sensor 22b, and includes a controller, which is not illustrated. The output shaft 21a of the motor 21 drives the driving portion 15a of the switching cam 15 via the driving cam 22 a. As shown in fig. 4 (b), the driving portion 15a is the tip of the driving arm 15c that swings around the support portion 15b, and receives driving for switching the switching cam 15 provided at the tip of the switching arm 15 d. In a state where the entry stroke of the sinker plate 11 is at the maximum on the closed side, the restriction member 13 does not restrict the entry stroke, and the other portions are retained to receive the restriction of the entry stroke.

Fig. 5 shows the structure of the components associated with the movable sinker device 10. The base plate 4 and the needle plate 5 are members forming the needle bed 2, but the main part of the movable sinker device 10 is assembled by the thin portion 5a and the support portion 5b provided in the needle plate 5. Grooves are formed in the base plate 4 at regular intervals in the longitudinal direction, and the lower portion of the needle plate 5 is inserted and fixed by the wires 4a and 4 b. A metal belt 5d extending in the longitudinal direction and a regulating shaft 14 are inserted into the upper portion of the needle plate 5. The sinker plate 11 and the wire spring 12 are accommodated in the thin portion 5a of the needle plate 5. The regulating member 13 is housed together with the trailing end 11b of the sinker plate 11 in a thin portion 5c provided on the side away from the mouth 3 with respect to the thin portion 5a. The carrier spacer 6 is accommodated between the needle plate 5 on the side where the sinker plate 11 and the regulating member 13 are accommodated in the thin portions 5a and 5c and the adjacent needle plate 5. The carrier spacer 6 has a carrier portion 6a at the leading end facing the mouthpiece 3 and two projections 6b and 6c at the trailing end. The portion having the two projections 6b and 6c functions as a holding member for holding the swing state of the regulating member 13 at the intermediate stage. When a gap is formed between the needle plates 5 even when the carrier spacers 6 are stored, spacers not having the carrier portions 6a are further stored and clogged. Instead of the carrier spacers 6, only the spacers may be accommodated between the needle plates 5.

Fig. 6 shows the function of the carrier spacer 6 having the projections 6b as a holding member. As shown in fig. 6 (a), the two protrusions 6b and 6c protrude toward the regulating member 13 side, and hold the regulating member 13 so as to sandwich from both sides in the swing direction at an intermediate stage. When the spacer is used instead of the carrier spacer 6, the spacer may function as a holding member. As shown in fig. 6 (b), a regulating member 23 having recesses or holes 23d and 23e formed at positions corresponding to the projections 6b and 6c at an intermediate stage may be used. The regulating member 23 has a pressure receiving portion 23a, a minimum regulating portion 23b, and an intermediate regulating portion 23c, which are similar to the regulating member 13. Further, a protrusion may be provided on the regulating member side, and a recess or a hole may be provided on the holding member side such as the carrier spacer 6.

In the present embodiment, as shown in fig. 6 (c), the protrusions 6b, 6c are formed to protrude from the carrier spacer 6 formed of a thin metal plate toward the regulating member 13 side. Therefore, there is resistance when the regulating member 13 is switched from the intermediate stage to the other stage, and the restricting of the entry stroke of the sinker plate 11 can be stably continued with the oscillation state not being switched of the switching cam 15 and the like being maintained. In addition, in both the state shown in fig. 3 and the state shown in fig. 4 (a), the projections 6b and 6c as the holding members of the present embodiment contribute to holding the swing state of the regulating member 13.

Fig. 6 (a) also shows a state in which the intermediate regulating portion 13c of the regulating member 13 is engaged with the trailing end 11b side of the sinker plate 11 by abutment of both the upper surface 13c1 and the inner surface 13c 2. When the two surfaces are brought into contact with each other, the restricting member 13 can be sandwiched so as to stop the swing regardless of which direction the restricting member swings from the maximum side or the minimum side at the intermediate stage or the minimum stage.

Fig. 7 shows the control of the control unit 20 when switching the entry stroke in the movable sinker device 10. Assuming that the maximum entering stroke is L, the middle is M, and the minimum is S, the origin sensor 22b of fig. 4 (a) detects L as the origin 0. The numerical value shown in the upper stage corresponds to an example of the rotation angle of the output shaft 21a of the motor 21. In the switching from L to M indicated as C1, control is performed as follows: after the temporary shift to M, the process returns to the second intermediate stage M provided in the vicinity of M, and then shifts to M. This can be considered as a transition to the intermediate stage M after returning from the position M passing through the vicinity of the second intermediate stage M to the second intermediate stage M. Each stage of switching was performed by traveling 1 course of the carriage. In the handover from M to L, denoted C2, the transition is directly from M to L. In the switching from S to M, denoted as C3, the transition from S to M is made once, and further from M to M. That is, the position M passes through the vicinity of the intermediate stage M and returns to the position M of the intermediate stage. The switches from M to S, from L to S and from S to L, denoted C4, C5 and C6, respectively, are directly transferred.

As in C1 and C3, when switching the entry stroke of the sinker plate 11 to the intermediate stage M, the control unit 20 controls the sinker plate 11 to once swing to the vicinity M of the intermediate stage M and then further swing to the intermediate stage M. Thus, even if the swing of the regulating member is over the way, the regulating member returns from the vicinity M and the transition to the intermediate stage M can be reliably performed.

According to the present embodiment, the entry stroke of the closed sinker plate 11 can be switched to 3 stages. If the restricting member 13 is provided with more restricting portions than the minimum restricting portions 13b and 23b and the intermediate restricting portions 13c and 23c, the number of stages of switching can be increased. In the 3-stage switching, the restricting portions for the maximum entry stroke can be provided in the restricting members 13 and 23. The 3-stage switching can be set to a preferable condition of pressing down when the knitted fabric is hard to descend below the needle bed gap 3, for example, in the case of the flechage knitting, or the like, at the maximum, a preferable condition of knitting short fibers such as wool, cotton, or the like, and a preferable condition of knitting long fibers such as polyester, or the like, at the minimum.

Claims (7)

1. A weft knitting machine (1) provided with a plurality of movable sinker devices provided in a longitudinal direction on the needle bed gap (3) side of a needle bed (2), a sinker plate (11) having a knitting yarn hooking portion (11 a) on the tip side thereof being biased by a spring (12) in a direction to increase the stroke of entering into the needle bed gap (3), and being capable of being driven by a pressing cam (16) mounted on a carriage traveling in the longitudinal direction in a direction to decrease the stroke of entering into the needle bed gap (3), characterized in that,

the weft knitting machine (1) provided with the movable sinker device comprises:

a restricting member (13) which is rod-shaped and can swing around a middle shaft (14), one side of the restricting member (13) is a pressure receiving part (13 a) for receiving pressure for driving the swing, and the other side of the restricting member (13) is provided with a minimum restricting part (13 b) which is engaged with the tail end (11 b) side of the sinker plate (11) to restrict the sinker plate (11) to at least the minimum entering stroke to the tooth mouth (3) and a middle restricting part (13 c) which can restrict the intermediate stage between the minimum and the maximum;

a switching cam (15) that presses the pressure receiving portion (13 a) of the restricting member (13) to swing the restricting member (13) and that can switch the restriction of the entry stroke of the sinker plate (11) in a plurality of stages; and

and a control unit (20) for controlling the switching triangle (15) and switching the entering stroke of the sinker plate (11).

2. The weft knitting machine (1) with movable sinker devices according to claim 1,

the control means (20) controls the sinker plate (11) to return to the intermediate stage from a position passing near the intermediate stage when the entry stroke of the sinker plate (11) is switched to the intermediate stage.

3. The weft knitting machine (1) provided with movable sinker devices according to claim 1 or 2,

further comprising a holding member (6), the holding member (6) holding the swing state of the regulating member (13) at the intermediate stage.

4. A weft knitting machine (1) with movable sinker devices according to claim 3,

the holding member (6) holds the regulating member (13) so as to sandwich the regulating member from both sides in the direction of the swing.

5. The weft knitting machine (1) provided with movable sinker devices according to claim 1 or 2,

the intermediate regulating portion (13 c) of the regulating member (13) is engaged with the trailing end (11 b) side of the sinker plate (11) by abutting against both surfaces (13 c1, 13c 2).

6. Weft knitting machine (1) with movable sinker device according to claim 3,

the intermediate regulating portion (13 c) of the regulating member (13) is engaged with the trailing end (11 b) side of the sinker plate (11) by abutting against both surfaces (13 c1, 13c 2).

7. The weft knitting machine (1) with movable sinker devices according to claim 4,

the intermediate regulating portion (13 c) of the regulating member (13) is engaged with the trailing end (11 b) side of the sinker plate (11) by abutting against both surfaces (13 c1, 13c 2).

Images