JPS5852147A - Intermittent feed device for feed shaft - Google Patents

Abstract

PURPOSE:To feed a feed shaft intermittently at a fixed stroke via balls fitted inside a taper hole by moving a movable member such as a plunger to be magnetically reciprocated or the like. CONSTITUTION:When current of a fixed direction is supplied to a coil 6 and a plunger 12 is moved to the right to be in contact with a stopper 17, a taper hole 14 is moved as leaving the first catching ball 19 behind. Consequently, a feed shaft 16 is prevented from moving in linkage, and spring 22 and 23 are extended to push the ball 19 to the right to be caught by the inner wall of the taper hole 14 as illustrated. At this stage, when the direction of the current supplied into the coil 6 is changed, the plunger 12 is moved to the left at a fixed stroke against 22 and 23 until it is dashed to a stator core, and the feed shaft 16 caught via the ball 19 is moved to the left in linkage. In this construction, as the plunger 12 repeats its reciprocation, the feed shaft 16 is moved to the left intermittently at a fixed amount of movement.

Description

DETAILED DESCRIPTION OF THE INVENTION A first aspect of the present invention aims to provide a feeding device that intermittently feeds the feed shaft at a constant stroke by moving a movable member inserted through the feed shaft. A tapered hole whose feeding direction is enlarged around the feed shaft is provided in the movable member through which the shaft is freely slidably inserted, and the tapered hole has a hole that is connected to a local part of the feed shaft and the inner circumferential wall of the tapered hole. A first engaging ball that engages with the ball, and a first engaging ball that presses the ball in the opposite direction to the feeding direction.
The present invention is characterized in that the movable member is provided with a movement control device such as an electromagnetic device or a hydraulic device for moving the movable member with a stroke corresponding to the feed amount of the feed shaft. Also, the second invention is the feeding device of the seventh invention! F (A
), a tapered hole is provided around the feed shaft in the fixing member into which the feed shaft is freely inserted, and a second spring is provided in the taper hole to press the peripheral part of the feed shaft and the tip pearl. ,
A movable member that is moved by a movement control device such as an electromagnetic device or a hydraulic device with respect to the fixed member presses the second engagement ball in a direction against the elasticity of a second spring as the movable member moves. The brake device (B) is configured with a brake device (B) provided with a button for releasing the brake action, thereby making the first invention even more beneficial.

A preferred embodiment of the invention will be described with reference to the accompanying drawings.

FIG. 1 shows a feeding device (A) according to the first aspect of the present invention, which is constituted by an electromagnetic device 1 having a fixed iron core with a convex cross section, which is an example of a fixed member. The fixed iron core has a stepped surface 3, and the stepped surface 3 has a surface P,! Insert and engage the pobin j wrapped around the coil 6;
protrudes forward from the diameter-reduced front end face of the fixed iron core 2. A core vibe 7 whose one end is locked by a stepped surface 3 of a fixed iron core is fitted onto the outer periphery of the bobbin S, and a ring-shaped lid j is applied to the core vibe 7 and the bobbin S from the front end surface of the bobbin j to fix them. A center hole 9 is provided in the fixed iron core, and a spring hook with an enlarged diameter center hole 9 is formed in a recess l on the front end face with a reduced diameter.
.

and the front end r! j1 da has a magnetic killer consisting of a non-magnetic ring with a through hole that matches the spring hook recess lo //
is applied, and a plunger lλ, which is an example of a movable member, is fitted to the front side of the magnetic killer II. 16 is a feed shaft which is slidably passed through the center hole 9 of the fixed iron core and the center through hole 13 formed in the plunger saw, and is opposed to the fixed iron core of the center hole 13 of the plunger saw. A tapered hole l# with a gentle angle enlarged in the feeding direction is provided at the end, and a locking step hole l! is provided at the end. Form by slightly expanding the diameter.

A ring-shaped stopper 17 that determines the stroke of the plunger /- is attached to the ring-shaped lid t, and a bushing /I interposed between the center through-hole 13 of the plunger saw and the feed shaft tS is fixed to the stopper 17. .

Reference numeral 19 denotes several first engaging balls (see Fig. 2) inserted into the tapered hole/41 and brought into contact with the outer periphery of the feed shaft lB and the inner circumferential wall of the tapered hole/41. retainer
Rotatably sandwich with 〇.

-7 has one end engaged with a fixed iron core serving as a fixed part, and the other end acted on each engaging ball 19 via a retainer JO.
In this embodiment, the first spring λl is a spring JJ.
The spring 23 is divided into a spring 23 and a spring 23, and the spring 23 is fitted into the spring hook recess 1O of the fixed iron core 23, and the front end of the spring 23 is in contact with the rear surface of the washer 2 inserted into the locking step hole tS of the plunger 12. Hang both ends of the 2 pieces on the front side of the washer '2Q and the retainer 20.

In this embodiment, the direction of the current supplied to the coil B is alternately switched by a changeover switch.
In the state shown in FIG. 1, depending on the flow direction of the current supplied to the coil 6, the plunger saw, which is a movable member, moves to the stopper 17.
The Kinsensansha moves to the right until it comes into contact with , and at that time, the first engagement pole/9 is left behind and the taper hole/da is moved, so the feed shaft 16 is not interlocked and the taper hole/4
111 is moved to the right, the spring 22 and the spring 3 are expanded, and the first engaging pole 19 is pressed to the right until it again engages with the inner circumferential wall of the hole/41, resulting in the state shown in the figure. .

When the direction of the current flowing through the coil B is switched, the plunger /J moves to the left with a constant stroke until it hits the fixed iron core, and the feed shaft l≦ engaged via the first engagement ball /9
Move to the left according to the arrow. At that time, spring 23 contracts.

By repeating the reciprocating motion of the plunger saw as described above, the feed shaft /4 is intermittently fed by a constant movement amount to the left.

FIG. 3 shows a second invention in which the feed device (A) of the first invention and the brake device (B) are combined.

The brake devices) are arranged on both sides of the feed device (A) illustrated in FIG. In the figure, St is an electromagnetic device of the brake device, and is a fixed iron core P with a convex cross section.

A pobbin SO with a coil SS wound thereon is fitted and engaged with the stepped surface S3 provided in the step S3, a core vibe j6 is fitted on its outer periphery, a ring-shaped lid S7 and a stopper sr are fixed to the front ends of the bobbin sq and the core pipe S6, A plunger 6 which causes movement at the inner circumference of the pobin S and the lid S7 is fitted into the front part of the fixed iron core S.

The feed shaft 16 is passed through the fixed iron core Sλ and the plunger 441.

The fixed iron core j2 is an example of the fixed member of the brake device (B) of the second invention, and has a tapered hole S9 with an enlarged diameter on the open surface at the outer end, and the feed shaft 16 is passed through the hole j9. , ゛ The taper hole S9 has retainers 62 of a plurality of λ-th engagement poles 61 that engage with the outer periphery of the feed shaft LB and the inner circumferential wall of the taper hole, and a number λ-th engagement ball 4/. A third spring t3 is provided that presses the tapered hole j9 in the diameter reduction direction. 441 is the No. 63 spring
The ring is a cedar board that supports the outer end of the ring and is fixed in the tapered hole j9.

The plunger 6da constitutes a movable member of the brake device.

The plunger 6da is provided with a central through hole aS through which the feed shaft 16 is passed, and further inserted into the tapered hole 39 of the fixed iron core S and a second hole aS is provided.
A cylindrical pusher 44 is provided to push the engagement pawl 61 against the elasticity of the second spring 63.

In FIG. 3, the feed shaft 16 is intermittently transferred in the left direction as shown by the arrow by the feed device (A), and the right and left brake devices () and (B) are arranged symmetrically. In the state shown in the figure, the feed shaft/6 is on both the left and right sides of the feed device (A), facing the respective brake devices, and the second engagement ball 61 of
and the first spring 63 so as not to move in either the left or right direction, and the first engaging ball 19 of the feeding device <A) and the first spring 21 also force the movement in the right direction, which is opposite to the feeding direction. The situation is as shown in Figure 1 (I).

The coils sr and ss of ) and (B) of the brake device move back and forth while changing the direction of current supply. , ≦6 indicates a state in which the second engagement balls t/, 6/ are moved to a position where they are not pressed.

To move the feed shaft 16, switch the direction of current feeding to the coils j5 and ss of each brake device),
It), thereby moving the third engagement pole t
'/, press t/. At that time, each of the engagement poles pushes the second springs 6J and 63 to disengage the inner circumferential walls of the tapered holes S9 and S9, thereby releasing the brake action, and at that moment the feeding device (' The plunger 12 of A) is also shown in FIG. 4 (2)), and as described above, moves to the left to feed the feed shaft lt, and at that moment the brake device) is moved to the left.
■ Return the plunger 6da of the feed device °(A) to the state shown in Figure 4(1) as shown in Figure 4(6), apply the brake to make the feed shaft/4 immovable, and then /J
Repeat feeding and braking alternately.

Fig. S shows two feed devices (A) and two brake devices (B) arranged symmetrically so that one feed shaft 16 can be fed intermittently to either the right or left direction. An application example is shown. In this device, one of the feeding devices fft'(A
), and at that time, the first engaging ball /9 of the other feed device fil' (A) unconditionally allows the feed shaft lB to move in the feed direction.

Although the plunger/U and Otsu 6 are actuated by electromagnetic fitting, they can also be changed to movable members connected to a piston that moves in two directions by a hydraulic device.

Nine modifications may be made freely within the spirit of the present invention.

The present invention has the structure and action clarified by the above explanation, and the first invention allows for free intermittent feeding of the feed shaft, and the second invention allows for intermittent feeding of the feed shaft and the position of each feed movement. Advancement 3 that allows you to freely apply the brakes and release the brakes

P.

It has λ properties.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the first invention.
21 is a sectional view of FIG. 1 30-30, FIG. 3 is a vertical sectional side view showing an embodiment of the first invention, and
) is an explanatory diagram of its operation, and FIG. 5 is a longitudinal sectional side view showing an example of application of the second invention. (A) → Feeding device, K → Fixed core (fixed member), 12 →
Plunger (movable member), ta→tapered hole, 16→feed shaft, 19→first engagement ball, 21→first spring, (B)
→ Brake device, S2 → Fixed iron core (fixed member), S9 →
Tapered hole, t/→ No. 1 engagement ball, Otsu 3 → 2nd spring,
6 d → plunger (movable member), 4 t → plunger - Applicant Maruva Electric Co., Ltd.

Claims (2)

[Claims] (1) A tapered hole whose feeding direction is expanded around the feed shaft is provided in the movable member through which the feed shaft is freely slidably inserted, and the taper hole has the peripheral part of the feed shaft and the inside of the taper hole. an electromagnetic device that is provided with a first engagement pole that engages with the peripheral wall and a first fin that presses the ball in a direction opposite to the feeding direction, and that moves the movable member with a stroke corresponding to the feed amount of the feed shaft; An intermittent feed device for a feed shaft, characterized in that it is equipped with a movement control device such as a hydraulic device. (2) A fixed member through which the feed shaft is freely inserted is provided with a tapered hole whose feeding direction is enlarged around the feed shaft, and the tapered hole is provided with a peripheral part of the feed shaft and an inner part of the taper hole. an electromagnetic device that includes a first engaging ball that engages with a peripheral wall and a first spring that presses the ball in a direction opposite to the feeding direction, and that moves the movable member with a stroke corresponding to the feeding amount of the feeding shaft;
A feeding device (A
), and a tapered hole is provided in the fixing member into which the feed shaft is freely inserted, and a second engagement is provided in which the circumference of the feed shaft and the inner circumferential wall of the tapered hole are engaged. A ball and a second spring that presses the ball are provided, and a movable member is moved by a movement control device such as an electromagnetic device or a hydraulic device in correspondence with the fixed member, and as the movable member moves, the second engaging pole is moved to the second spring to press the ball. An intermittent feed device for a feed shaft comprising a brake device W (B) provided with a butcher that presses in a direction that resists the elasticity of a spring.