JPS60155759A - Mesh control apparatus in traverse knitting 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]

(Industrial Field of Application) The present invention relates to a stitch adjustment device for a flat knitting machine.

[Conventional technology]

When knitting fabric using a flat knitting machine, it is generally necessary to change and adjust the stitches for each part of the rubber body knitted part, the patterned part of the body, and the knitted part of the linking stitches. Furthermore, it becomes necessary to change the stitch size depending on the knitting pattern. However, in the conventional device, the stitch adjustment mechanism in the stitch changing device for stitching is configured with a pin provided for each stitch cam, and the stitching is performed by adjusting the screwing amount of the pin. It looked like this, so
The number of stages of power that can be converted is limited by the number of pins that can be arranged in a small space on the carriage,
In order to adjust the depth by adjusting the screwing amount of the pin, rather than the stupid 9 which can only be converted to a few steps at most, in order to change and adjust the depth to a different step value, it is necessary to change the carriage. It is very inconvenient that all the bins, several of which are provided for each knitting cam section of each mountain and for each pair of stitch cams, must be adjusted after the machine has stopped running. Ta. Therefore, in the case of a double cam or triple cam, a great deal of effort was required to make this change and adjustment. For example, Japanese Patent Publication No. 51-88829 discloses a method that solves the above-mentioned inconvenience, in which the stitch cam to be adjusted is moved against a tension spring that urges the stitch cam in the direction of increasing the stitch length. A stopper for locking at a desired stitch position is constituted by a transport nut screwed onto a spindle for adjusting the stitch, and the spindle is connected to an electric step motor via a bevel gear system. It is suggested that you keep it. [Problems to be Solved by the Invention] However, in the second adjustment device disclosed in Japanese Patent Publication No. 51-88829, since the tension of the tension spring is constantly acting on the motor, it is difficult to rotate the motor. , in order to adjust the height, the motor must be driven against the load of this spring. Therefore, with this conventional device, it is not possible to rotate the motor to adjust the stitch length within a short time when the carriage reaches the end of the needle bed, so the entire stitch stitch adjustment device of the leading stitch cam is floated. While the stitch cam is stopped at the position, only the stitch cam on the leading side can be set to > [σ, but in the conventional technology with such a configuration, each stitch cam can be Requires destination motor. This invention can adjust the strength with a smaller capacity and cheaper motor than the above-mentioned conventional technology, and can adjust the strength within a short time when the carriage turns back at the end of the needle bed. It is possible to adjust a pair of stitch cams using two motors, and the second conversion during knitting work can be arbitrarily selected from a multi-step conversion that is nearly stepless. The purpose is to provide a second adjustment device that can be used. [Structure of the Invention] That is, the stitch adjustment device according to the present invention includes a pair of stitch cams that are slidably supported along a pair of elongated holes bored in a cam plate in a direction for adjusting the stitch thickness. , is constantly biased in the downward direction by a spring disposed thereon, and when the carriage reaches the end of the needle bed, the pair of stitch cams are raised to the highest position by an appropriate clearing device. In the flat knitting machine configured as above, a means for locking the stitch cam at a desired stitch position when the stitch cam is lifted is released; The movable member has a stopper disposed on the movable portion of the movable member, and the stopper is composed of a rotating body connected to a drive shaft of a pulse motor or a stepping motor. The gist is that the stop action surface for the movable member is not formed on the outer circumferential surface of the rotating body, but is constituted by a wound surface. [Example] To explain the example with reference to the drawings, as shown in Figs. It is provided so as to be able to move up and down in the direction along the pair of elongated holes (4). Each stitch cam (1a) has the long hole (
4) a sliding fitting member (1b) located within the cam plate (
3) and a member (1c) that slides in contact with the back surface of the cam block (1). , the cam block (1) has a pin (5) protruding from it and the cam plate (3).
The stitch cam (1a) is constantly biased downward by the spring (6) disposed between the is about 0.5-degree eccentric position fiK set screw (7
) is fixed in a non-rotatable manner with a set screw (71) that can be inserted into the bush (8), whose rotational position relative to the cam block (1) can be arbitrarily adjusted. .This bush (8) is to enable adjustment of the point of action (20a) of the lever (2), which will be described later.Also, if it is located in the center between a pair of cam blocks (11), the cam plate ( 3) Grooves (9)a that cross each other on the back
A sliding guide metal fitting (11) with a diameter of
A sliding block a2 that is in sliding contact with the back surface of the housing is guided to be slidable in the vertical direction. Also, in the horizontal groove of the sliding guide hardware (11),
The stitch cam (
The rest position holding stopper a3 of 1a) is supported only so as to be slidable laterally. Said sliding block 0
2 is in sliding contact with the cam plate (3), a recess (12a) is formed on the upper surface of the recess (12a) to allow the rest position holding stopper 03 to slide across it. is placed at 8 positions in the longitudinal direction, and two pins (1
5100 and one roll pin aη whose surface is constituted by a freely rotatable trochanter are arranged in a predetermined positional relationship to be described later and are protrudingly provided. For this reason, the sliding guide hardware (111 includes a sliding block α
In order to allow the sliding block a2 to move up and down at a constant stroke α without being hindered by the presence of the pin 1151 (161) and the roll pin a protruding from the pin 1151 (161) and the roll pin a, In addition, a groove-shaped recess (Ila) is formed on the surface of the sliding guide hardware (11), and a pair of levers (Ila) are formed therein.
is pivoted symmetrically (21) with the center of the longitudinal direction of the sliding block O2 as the center of line symmetry, and this lever (
The company) uses one free end side (20a) as a point of action on the bushing (8) fixed to the cam block (1), and applies the tension of the spring (6) to the bushing (8). to the pin Q61 in the middle of the sliding block in the direction of transmitting the tension of the spring 16) to the pin (+61) with the other free end side (20b) as the point of force; A stepped portion is formed on the force point (20b) side of the pair of levers (20b), so that the force point (20b) of the pair of levers (20b) in this embodiment is
20b) is connected to the bottle scream at different positions above and below, and the cam block +11 of the pair of stitch cams (la) moves the sliding block az from the position shown in FIG. When the sliding block 02 is moved downward to the position shown in Figure 2, it is maintained at the highest position by resisting the spring (6) via a pair of levers ■, and when the sliding block 02 is released, it moves to the right side as shown in Figure 1. As shown in , one stitch cam (1a) is lowered to a desired stitch position regulated by a stopper which constitutes a main part of the stitch stitch adjustment device of the present invention, and a spring is applied thereto. (6) (details will be described later), but in Figure 1, the right stitch cam (1a) is pushed down to the maximum and controlled to the maximum position for the ninth time. This shows the state in which the carriage is moving to the left. Next, the sliding block O2 with the above-mentioned functions,
This embodiment will explain the clearing cam connection that acts on the roll pin surface to displace the sliding block (2) within the range of the above-mentioned stroke α, and the displacement drive fold of the clearing cam. The clearing bar (A) is supported on the carriage (2) so as to be slidable in the running direction of the carriage (2).
The clearing cam (goods) is integrally attached to the lower surface of the clearing bar (c), and the clearing bar (c) can be moved from the neutral position shown in FIG. 1.5cII when displaced to the right (second
), the cam surface (24a) acts on the roll pin a,
When the roll pin 0η rides on the flat cam action surface (24b) in the direction parallel to the clearing bar (a), the sliding block a2 moves against the spring (61)
It is designed to be lowered by α amount to the position shown in the figure,
means for keeping this clearing bar (to) in a neutral position;
A driving device for displacing it by the above amount (1,5cII) to the right or left is configured as follows. That is, a pair of swing bars (2) are provided at appropriate positions on the back of the cam plate (3), and a spring (support) is provided between the pair of swing bars (5). ) is installed,
By colliding with the pin (5) protruding from the cam plate (3), the pair of rocking bars bias the spring ■ acting on its free end side to the position shown in Figure 1. Although it is locked, a pair of swing bars are kept in this position @
From the clearing bar @, which is arranged at a position where the inner working surfaces (27a) of the clearing cams can come into contact with each other, and the cam surface (24a) of the clearing cam is kept at a neutral position where it does not act on the roll pin αη. It has a pair of protruding pins. Therefore, in the state shown in FIG. If it is intentionally displaced in the direction of , the pin ■ will push the swinging bar fin against the spring (support), so the clearing bar □□□ will be in the neutral position due to the spring ■. At both ends (only the left end is shown in the figure) of the clearing bar □□□, which is associated with the above-mentioned device for restoring to the neutral position, , a rack +11m is formed, and this rack (
(to) is meshed with one of the two pinions (ti@) on the same shaft (c11) which are respectively pivotally supported at both ends of the carriage (2), and the rack mill (to) is meshed with the other pinion (to). A sliding rod (C) having the clearing bar (C) is supported on the carriage (2) so as to be slidable in a direction perpendicular to the clearing bar (C). A trochanter (end) is attached to a portion where the lower end of this sliding rod (end) protrudes outside the carriage (2). Further, when approaching both end positions of the needle bed (41) of the flat knitting machine of this embodiment, the trochanter (to) is positioned at the acting position, and the acting position and the trochanter (to) are different from each other. A cam (41) whose displacement can be controlled is provided at each of the working position and the operating position.The cam (41) shown in FIGS. Control means (
(not shown), and the displacement can be controlled between an active position shown by a solid line in FIG. 6 and a non-active position shown by a chain line in FIG. That is, the tire ring bar (to) in this example
When the carriage (2) reaches near the left end (or right end) of its stroke, the tire ring bar (c) is in the neutral position, so it connects to the tire ring bar (c) and moves the slider in the neutral position. The trochanter (to) at the end of the moving rod (Fig. 1) is
When acting on the slope (41a) of the cam (J), the clearing bar 6 is raised from the neutral position by a predetermined amount (this In the embodiment, it is made to be displaced to the right by 1.5 CI4). When the clearing parrot moves to the right or left from the neutral position, the flat cam action surface (24b) of the clearing cam
), the roll pin 0'71 is lifted up as described above. In addition, the clearing bar lateral movement device configured in this manner is capable of moving the stroke 1 in which the trochanter (to) is in contact with the cam (the slope (41)) to the right as in the illustrated embodiment. (or left) If the required stroke (1.5 cm in this case) of the clearing bar (c) to be moved is made larger, the clearing bar (c) will be moved to reduce impact and to maintain the quietness. The trochanter (to) allows the cam (41) to move horizontally as required while the carriage (2) is in a certain reciprocating section where the carriage (2) travels at the final end of the left stroke. is brought into contact with the surface (41b), and 1
1. Thereby, the tire ring bar +251 is maintained with its flat camming surface (24b) acting on the roll pin surface for a certain period of time. When the roll pin 071 is brought into the state where it is acted upon by the flat cam action surface (24b) of the clearing cam as described above, the sliding block α2 is brought to the lowest position shown in FIG. and a pair of stitch cams (1a
) are both connected via a pair of levers ω on which pin 0e acts,
During this time, if the spiral stopper action surface (48a) of the stopper @, which will be described later, is displaced relative to the pin 09, the strength can be changed and adjusted. It has become. In the above embodiment, an example was shown in which the lateral movement device of the clearing bar was constituted by the rack (to) cl and the pinion ctac131 that meshed with it. As shown in the figure, the fulcrum (41J) is placed at an appropriate location on the carriage (2) between the sliding rod and the clearing bar (end), which are supported vertically on the carriage (2). The pivoted L-shaped lever (-) may be connected at both free ends. Next, the clearing cam (24
When the left and right movement device from the neutral position of 1 and the device for restoring to the neutral position are activated, it acts on the pin (151) of the sliding block (lffi) that is caused to move up and down in one reciprocating manner, and the sliding block 121 from its FIG. 2 position to the desired position.
, move the stitch cam (1a) to the desired stitch 1st position (
To explain the details of the stopper @ for locking it in the lowered position), the stopper @ shown in Figures 8 and 7 is attached to the pulse motor (a
The drive shaft (471K) is configured with a rotating body (for example, attached and connected), and this rotating body is connected to the pin [15
The action surface (48a) that acts on this rotating body (481
The inner circumferential surface (48a) of this embodiment has a pin (151) that contacts and acts on it during one rotation of the inner circumferential surface (48a).
It can be moved up and down by 4.5m. The display panel for the pulse motor (4ω) shows the rotation phase of the pulse motor (□□□ shaft (47) on the scale (0 to 4).
．． 5), and when this display panel f41 indicates the 0 point, the movable point 6 (g) installed opposite to the origin detection device II switches it on and the This display board (4) indicates that it is at the zero origin.
For example, when the @ scale indicates 8, the stitch cam (1a) moves 8 from the origin in the direction of action on the knitting needles.
It is designed to indicate that the aircraft has been lowered by 1m. Therefore, the ratio between the fulcrum I21) of the lever (2) and its force point (20b) and point of action (20a) is such that when the pin moves up and down by 1+w, the stitch cam (1a) is moved up and down by one degree in the direction along the needle groove. It is set to . As can be understood from the above explanation, when the sliding block uz is kept at the highest position as shown in FIG. It goes without saying that the rotating body (48a) is set in a hanging position that allows free rotation without contacting the rotating body (48a).The outer peripheral surface (48b) of this rotating body (48) is The outer circumferential surface (48b) K is bent into a dogleg shape in the direction of engagement with the sparse teeth, and its engagement acting portion (Boa) is energized, and its base end A rotation prevention stopper ω is fixed on the sliding guide hardware aD, and the clearing bar (to) K is fixed when the clearing bar (c) is in the neutral position as shown in Fig. 8g1. does not act on the engaging portion (60a) of the rotation prevention stopper (3), and when the clearing bar (C) is in the right (or left) displacement position as shown in FIG. A cam surface (25g) is formed that acts on the clearing bar 50a) to displace the acting portion (50a) to a non-acting position on the whale wheel, and the stopper @ consisting of the rotating body +41 is In the state shown in Figure 1 where (c) is held in the neutral position,
Its free rotation is kept blocked by the rotation prevention stopper, and in the state shown in Fig. 2 in which the clearing bar is displaced to the right (or left), it is freely controlled by the pulse motor. It is designed so that it can be rotated. In the above embodiment, the action surface of the stopper is the inner circumferential surface (4
8a), but in other embodiments, this may be constructed from the outer peripheral surface of a rotating body and engaged with the pin +151 of the sliding block. (not shown). In each of the above embodiments, the pulse motor (461) is used as the drive source for the stopper, but this drive source may be any drive source as long as the rotation angle or amount of rotation can be freely selected and electrically controlled. Needless to say, a stepping motor may also be used.Next, we will explain the rest position holding stopper 011 of the stitch cam located in the groove OI of the sliding guide hardware (111). The example rest position holding stopper Q3 is
The clearing bar (c) is formed to have a length 25 steps shorter than the distance between the pair of protruding pins, and one of the upper surfaces (18a) of both left and right ends of the clearing bar (c) is at the highest position ( Stitch cam (1a) displaced to Fig. 2)
The cam block (11) is formed so that it can be opposed to the lower end surface of the member (1c) while maintaining a slight clearance (see the left side of Figure 2), and the clearing bar (c) is When it is displaced 151 to the left (or right) from its position, it is displaced substantially 5 m to either the left or right on the cam plate (3) by the action of the pin ■, which acts loosely on its end face. (See Figure 2), when the clearing bar (2) is restored to the neutral position, the carriage (2)
) is arranged so that the leading side stitch cam (1a) in the running direction is locked in the raised position (body resting position It) as shown in FIG. In addition, in the above embodiment, the force point of the pair of levers (
20b) We have shown an example in which the number of pins acting on ``Ichiki'' is
In other embodiments, a pair of pins 0e may be protruded at symmetrical positions so that the handle force points (20b) sides of the pair of lever arms act on pins (161) at various locations. [Operation] To explain the operation using an example, the carriage (2)
If the displacement of cam +411 is controlled to the operating position before the carriage (2) approaches the end of the needle bed, when the carriage (2) approaches the end of the stroke, the interlocking action that acts on the cam (41) first The clearing bar (2) is displaced by a certain amount from the neutral position to either the left or right direction through the mechanism, and when the clearing bar temperature is displaced from the neutral position, the clearing cam naturally acts on the roll pin 0. The sliding block (12) is moved from the position shown in Figure 1 to the position shown in Figure 2, and a pair of stitch cams (12
Step a) and clear both to the raised position shown in Figure 2. In this state, when a pulse signal is input to the pulse motor (48), the stopper displaces the operating surface (48a) and the phase of the shaft 4 (rotation) to a desired position, causing the swing bar (5) to act. When the clearing cam (241) is returned to the neutral position by
b) will be displaced to the non-acting position with respect to the roll pin Uη, so at this time the sliding block uz
The stitch cam (1a) tries to rise while the stitch cam (1a) tries to fall due to the action of the spring (6). However, at that time, the stopper has already reached its stop action surface (48a).
In addition, the stitch cam (1a) on the trailing side acting on the knitting needles in this course is , by the action of the stopper @, the stitch cam (1a) on the leading side is selectively converted and its descent is stopped at the running position, and the leading side stitch cam (1a) is held at the rest position by the rest position holding stopper αS. be. [Effects of the Invention] The adjustment device of the present invention has been described above with reference to embodiments, but as can be easily understood from the above,
According to the second adjustment device according to the invention, when the carriage reaches the left or right end above the needle bed, a certain electric current is applied to the pulse motor or stepping motor on the carriage without stopping the carriage. By just giving a signal, when the carriage reaches the end of the needle bed, it can be adjusted to any desired degree. It is constructed into a large number of subdivided stages. Moreover, structurally, the device of the present invention energizes the stitch cams to the maximum position for the second time when the carriage reaches the end of the needle bed and the pair of stitch cams are once raised to the highest position. Since the spring pressure acting on the stopper is not acting on the motor for moving the stopper, the stopper can be easily and quickly moved by one small-capacity motor within the short time it takes for the carriage to turn back at the end of the needle bed. By rotating the motor a desired amount, the stitch cam connected to the movable member can be adjusted to a desired position via the stopper and the movable member acting on the stopper. A stopper that acts on a movable member that is interlocked with the stitch cam to lock the stitch cam at a desired stitch position against a spring that urges the stitch cam in the direction of enlarging the stitches is a rotating motor connected to the motor. Since it is composed of a thinly wound stop acting surface formed on the inner or outer circumferential surface of the body, the motor can be made much smaller in size than conventional devices, and the cost of the power adjustment device can be reduced. can be achieved.

[Brief explanation of the drawing]

Figures 1 and 2 are partially cutaway front views (front views of the carriage viewed from diagonally above) showing the main parts of one embodiment of the power conversion device according to this invention. This shows the state before the carriage acts on the cam at the end of the needle bed, and FIG. 2 shows the state in which the carriage acts on the cam at the end of the needle bed. Fig. 8 is a sectional view taken along the line m--■ of Fig. 2, also showing the stopper, Fig. 4 is a sectional view taken along the line -■ of Fig. 1, Fig. 5 is a sectional view taken along the line v-v of Fig. 2,
Figure 6 is a sectional view taken along the Vl-Vl line in Figure 2, Figure 7 is a sectional view taken along the ■-vil line in Figure 8, Figure 8 is a surface view of the pulse motor display panel, and Figure 9 is the view shown in Figure 1. FIG. 10 is a perspective view mainly showing the relationship between the sliding block and the clearing cam in the state shown in FIG. Block, (1a)... Stitch cam, (2)... Carriage, (3)... Cam plate, (41... Long hole,
(6) Spring, (8) Bush, uz...
・Sliding block, (15111[fl...pin, 07
1... Roll pin, □□□... Lever, ■...
Stopper, C', 4)...Clearing cam, (
24a)...Cam surface, (24b)...Flat working surface, (c)...Clearing bar, (411il...
・Pulse motor, (ω...rotating body, (48a)...stopping surface of the stopper. Patent applicant Shima Idea Center Co., Ltd. Agent (
6870) Patent Attorney Takemi Nishimura Figure 3 Figure 7 Figure 6

Claims (1)

[Claims] 1. A pair of stitch cams are slidably supported along a pair of elongated holes drilled in the cam plate in the direction of adjusting the depth, and are constantly lowered by a spring installed to increase the depth. In a flat knitting machine, a pair of stitch cams are energized in the direction of the needle bed and are configured such that when the carriage reaches the end of the needle bed, the pair of stitch cams are raised to the highest position by an appropriate clearing device. Means for locking the stitch cam at a desired stitch position when the lift is released comprises a movable member provided in conjunction with the stitch cam and a stopper disposed in a movable region of the movable member. The stopper is configured with a rotating body connected to a drive shaft of a pulse motor or a stepping motor, and the stopper surface that acts on the movable member is located on the inner periphery of the rotating body. 1. An adjustment device for a flat knitting machine, characterized in that it is constituted by a spiral surface formed on a surface or an outer peripheral surface.