JPS63182442A - Apparatus for selectively moving member - 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 Application Field) The present invention provides an engaging piece that is attached to one of a reciprocating member and a driven member that follows the reciprocating member, and that is attached to the engaging portion of the other member. It relates to a device that selectively advances or retreats a driven member by switching between an engaged position and a non-engaged position,
When moving the vertical needle of a loom, moving the horizontal needle of a jacquard machine, selecting the stopping position of an axminster lift, etc., it is necessary to move various parts arranged vertically and horizontally, such as the elevating mechanism of the chisel of a pattern paper carving machine. Used when moving selectively.

(Prior art and its problems) This type of device is used, for example, when selectively moving the horizontal needle of a Jacquard machine.

The device disclosed in Japanese Unexamined Patent Publication No. 57-39242 is a typical example of this device, in which a solenoid-type electromagnetic actuator corresponding to each horizontal needle is selectively switched to the upper or lower position to move the solenoid group forward. The horizontal needle is selectively pushed by.

However, when trying to use a solenoid-type electromagnetic actuator to perform push-motion control on the horizontal needles of a Jacquard machine, which are densely arranged in a narrow space and arranged in parallel vertically and horizontally, the electromagnetic The actuator must be configured to be small. If the actuator is made smaller, the electromagnetic force will be weaker and the switching response will be slower.Moreover, the small actuator will directly collide with the cross needle and push it, resulting in damage to the actuator itself. There was an inconvenience.

(Technical Problem) The present invention provides a method for attaching an engaging piece to one of a reciprocating member and a driven member that follows the reciprocating member, and attaching the engaging piece to the engaging portion of the other member at a position where it engages and at a position where it does not engage. An object of the present invention is to provide a device for selectively advancing and retracting a driven member by switching between the two, so that an operating portion of an engagement piece, which is a switching member, can be operated quickly without being subjected to impact.

(Technical Means) The technical means for solving this technical problem is to arrange a swinging member formed by pasting two piezoelectric elements along the engagement piece.

(Operation of technical means) A swinging member made of two piezoelectric elements pasted together expands one element and contracts the other element by applying voltages of different polarities to the piezoelectric elements. By selecting the voltage to be applied, the swinging member will instantly bend in a predetermined direction.

When the above-mentioned swinging member is placed along with the engaging member attached to either the advancing/retracting member or the driven member so as to be movable to two positions, and a voltage is applied to the piezoelectric element, the piezoelectric element acts as an actuator. The engagement piece is moved in response to the bending.

When voltage is selectively applied, the engaging pieces are sorted into those in positions where they can be engaged with the other member and those in positions where they are not engaged, and the driven members are selectively moved as the advancing and retracting members move. will be moved to.

In this case, since the reciprocating member moves the driven member via the engagement piece, no impact is generated on the swinging member, and the swinging member is not damaged due to movement of the driven member by the retracting member.

(Effects of the Present Invention) As a result of the actuating portion of the engagement piece, which is a switching member, being able to operate quickly without being subjected to impact, the movement cycle of the driven member by the advancing/retracting member can be shortened.

Since the swinging member in the above technical means is operated by applying voltage, the movement of the driven member can be electrically controlled, and even though the amount of displacement is large, the swinging member can be engaged with a small stress. The position of the piece can be changed, and the power consumption is extremely small.

In addition, since the swinging member is made up of two piezoelectric elements, there is no need to take up a large space to move the engagement piece, and a large number of driven members are arranged closely in rows and columns. There are also benefits available.

(Embodiment) The most suitable rocking member is a bimorph structure in which two thin plate-shaped piezoelectric ceramics are bonded together, or a unimorph structure in which a thin plate-shaped piezoelectric ceramic is bonded to an elastic plate such as metal. Select and apply a voltage to the pair of plates and select the swing direction.

In addition, a structure in which two thin piezoelectric ceramics are bonded on both sides of a thin elastic metal plate can also be used, and by selecting the metal plate and one of the piezoelectric ceramics and applying a voltage, the rocking direction can be adjusted. In addition, the engagement piece is configured to switch between two positions as the swinging member swings, and is moved by the swinging member only when moving to the engagement position, and when returning to the engagement position. The configuration may be such that the return can be performed using other forced return means.

(Example) Next, a specific example of the above technical means will be explained with reference to the drawings.

1. First Embodiment = Figure 1 shows a typical case in which shaft bodies (3) arranged horizontally in parallel are moved by a single power bar (10) that moves back and forth. This is used when selectively pushing the horizontal needle (2).

In this device, a shaft body (3) is arranged parallel to and coaxial with each horizontal needle (2), with the shaft body (3) being biased backward by a spring or the like (not shown), and each shaft body (3) is has an engagement recess (5) at the rear end.
) is formed into an engaging piece (4) that holds a pin (6).

A protrusion (7) is formed on the shaft (3) and abuts against the upper inner wall of the engagement recess (5), functioning as a stopper for the engagement piece (4).

A bimol type rocking plate (13) made of two piezoelectric ceramic plates (11) and (12) bonded together is arranged below each shaft body (3) with one end fixed. The lead wire (a) has its free end facing below the engagement piece (4) and is connected to the piezoelectric ceramic plates (11) (12).
b) The other end is connected to an electrical signal applying device (not shown).

A power bar (10) that reciprocates in the direction of the arrow is arranged above the shaft body (3) in each row, and its tip is positioned behind the rear end of the engagement piece (4). (See Figures 1 and 2).

The operation of this device begins with a piezoelectric ceramic (11) located below a shaft (3) that is moved by an electric signal applying device.
(12) is applied with voltages with different polarities, and the oscillating plate (13
) is bent upward.

Accordingly, the engagement piece (4) bends upward and projects onto the path of the power bar (10). Next, power bar (10
) is advanced, its tip abuts against the recess (5) of the engagement piece, and the shaft (3) to which the engagement piece (4) is pivotally attached is advanced.

The advanced shaft body (3) is connected to the horizontal needle (2) located in front of it.
As a result, the warp needles are selectively pulled up and the warp threads are shedding.

The application of voltage to the rocking plate (13) is stopped when the shaft (3) moves forward, and the voltage for the next step is applied when the shaft (3) returns.

With the return of the shaft body (3), the engagement piece (4) engages the power bar (
10) and returns to its original position under its own weight.

In this embodiment, in order to ensure the return of the engagement piece (4), a return bar (15) that moves forward and backward together with the power bar (10) is arranged as shown in FIG. 1
0), the return bar (15) pushes the inclined wall (16) provided at the rear end of the engagement piece (4) to forcibly return the engagement piece. In this case, the voltage is applied to the engagement piece between the return bar (15) and the forward movement of the power bar (10).

In addition, in the above embodiment, the engagement piece is attached to the driven side, but as shown in FIG.
The engagement piece (18) is pivotally attached to the shaft body (13) by applying a voltage to the rocking plate (19) also installed inside the housing to displace the tip of the engagement piece (18). It may be configured to be driven.

Reference numeral (20) is a stopper that positions the top dead center of the engagement piece.

In this modification, the rocking plate is located below the engaging piece, but the rocking plate is placed behind the engaging piece, the engaging piece is made to protrude toward the rear side of the pivot portion, and the rocking plate is placed behind the engaging piece. The distal end of the movable plate may be locked to the protrusion so that the two move together.

It is also possible to arrange the apparatus of the first embodiment in the vertical direction and to raise and lower the chisel for engraving of the engraving machine using the shaft.

=Second Embodiment= Figure 5 shows a case where the device of the first embodiment is arranged vertically to selectively pull up the shaft. This was used when the needles (23) were selectively pulled up to open the warp threads.

A thread threading (22) is connected to the lower end of the vertical needle (23), and an engaging piece (24) pivotally attached to the vertical needle (23) is attached to a rocking plate (26) configured in the same manner as in the previous embodiment. It is configured to move by selectively applying voltage, and to selectively pull up the vertical needle (23) when the power bar (30) rises.

In addition, the code|symbol (25) is a return bar.

=Third Embodiment= This embodiment is a modification of the second embodiment, and shows a case where the rising height of the driven member can be selected.
2) and a lifter (40) that raises and lowers the lift.

That is, FIG. 6 shows this elevating mechanism, in which plate-shaped thread carriers (32) supporting a large number of colored threads (41) in multiple stages are arranged in parallel at the lower end so as to be able to rise and fall freely, and each carrier's The engaging part (47) is formed in multiple stages on the right side, and the lid (40) is formed in multiple stages.
).

An engagement piece (44) is pivotally connected to each carrier (32),
When the lifter (40) is raised, the height of the lifter (40) is detected, and a voltage is applied to the rocking plate (46) configured in the same manner as in the previous embodiment, thereby causing the engaging piece (44) to protrude to the right. The engaging piece (44) engages with the engaging portion (47), so that a desired thread can be drawn into a thread pulling part (not shown).

In the above configuration, by forming the upper side of the engagement portion (47) of the lifter into a tapered wall as shown in the drawing, the engagement piece (44) is forced to return to its original position. be able to.

In addition, engagement recesses are formed in multiple stages on the carrier side, an engagement piece is attached to the lifter side, and when the lifter rises, the height is detected and the rocking plate is operated, causing the engagement piece to protrude. It may be configured to boost your career.

In this way, the device of the present invention can be used regardless of the direction, and the embodiments shown above can be used in combination as appropriate.

[Brief explanation of the drawing]

The drawings are for explaining specific examples of technical means.
Fig. 1 is a side view of the main part of a device for selectively pushing the horizontal needle of a Jacquard machine, Fig. 2 is a sectional view taken along line n-n in Fig. 1, and Fig. 3 is a modification of the above device; Figure 4 is a side view of the main part when the shaft body is directly pushed and controlled by the engagement piece, Figure 5 is a side view of the main part of the device that selectively pulls up the vertical needles, and Figure 6 is the colored thread of the Axisminski loom. FIG. 3 is a side view of main parts of the selection device. (2) Cross needle, (3) Shaft, (4) (18) (24)
(44) Engagement piece, (10) (30) Power bar, (1
3) (19) (26) (46) Rocking plate, (15)
(25) Return bar, (17) ! body, (23) vertical needle;
(32) Yarn carrier, (40) Lifter

Claims (4)

[Claims] (1) Attach an engaging piece to either the advancing/retracting member or the driven member that follows it, and switch it between a position where it engages with the engaging portion of the other member and a position where it does not engage the driven member. A device for selectively advancing and retracting a member, in which a swinging member having a piezoelectric element attached thereto is arranged along an engagement piece. (2) The device according to claim 1, wherein the swinging member is formed by bonding two thin plate-shaped piezoelectric ceramics, and a voltage is selectively applied to the piezoelectric ceramics. (3) The device according to claim 1, wherein the swinging member is made of a thin elastic metal plate and a thin piezoelectric ceramic bonded together, and a voltage is selectively applied to each plate. (4) The oscillating member is formed by pasting two thin plate-shaped piezoelectric ceramics on both sides of a thin elastic metal plate, and a voltage is applied to the metal plate and either piezoelectric ceramic by selecting the piezoelectric ceramic. 1
Equipment described in Section.