JPS58220066A - Bobbin gripping device - Google Patents

Abstract

PURPOSE:To ensure gripping operation of a bobbin for enhancing the operating efficiency of gripping a bobbin, by rotating a chuck lever in the direction of gripping a bobbin in association with the downward movement of a cam member after a chuck body is abutted against the top face of the bobbin, so that the bobbin is gripped. CONSTITUTION:When a gripping mechanism 20 takes its upper stand-by position and bobbin gripping instructions are issued for operating an air cylinder, an actuating rod 19 is moved downward so that the lower surface of a cap 23 at first abuts against the upper face of a bobbin 6, ans the actuating rod 19 is further moved downward, causing a cam member 25 to be moved downward overcoming a spring 27. Then, a chuck lever 28 is rotated inward by a second cam surface 25b in the cam member 25 through a cam follower 30, and therefore, a pawl part 28a grips the upper part of the bobbin 6. When the cam member 25 comes to its lowermost position, the cam member 25 is released from the lower end of the stop lever 32 which is therefore rotated in the direction of the arrow about a pin 33 by means of a spring 34 for inhibiting the cam member 25 for returning its original position, thereby the bobbin 6 is continuously held to be gripped.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a gripping device for a hobbin wound with roving yarn spun by a roving frame, for example.

Generally, roving hobbins are heavy, and in order to supply a large number of them to a spinning machine, an automatic conveyance system is suitable from the viewpoint of reducing work efficiency and production costs. One step of this conveyance device is to lift the hobbin by grasping the flange formed at the upper end of the roving hobbin fixed at a certain location.
Conventionally, as a hobbin gripping device for transferring to the rear side, when the chuck body moves a certain distance downward and stops at a position corresponding to the collar of the hobbin in the fixed position, the chuck claw closes and grips the collar. Later, there was one in which the chuck tenon was moved upward to lift the hobbin.

However, in the conventional bobbin gripping device described above, when the position of the hobbin changes up and down due to movement of the hobbin support base, fitting condition of the peg and bobbin, etc., the correspondence relationship between the collar of the hobbin and the chuck claw changes, and this Therefore, there was a problem in that incomplete gripping was performed and the bobbin fell off during the ascent.

The present invention has been made to eliminate the above-mentioned defects, and its object is to provide a bobbin gripping device that can reliably grip a hobbin and prevent the bobbin from falling off.

Hereinafter, an embodiment in which the present invention is embodied in a loading device for transferring a roving hobbin to a conveyance magazine suspended from a conveyance rail connected to a spinning frame will be described with reference to FIG.

Figure 1 shows an outline of the loading device recently developed by the applicant.
On the 1°11 side (left side in Figure 1), a pair of front and rear support rails 2°3 are installed in the left-right direction (direction perpendicular to the plane of the paper in Figure 1).
The rails 2 and 3 are arranged so that the carrier vehicle 4 can move within the VCC circle in the left and right direction.

The upper lVC of this carrier 4 has a large number of pegs 5 projecting upward, and the lower end of a full roving bobbin 6 is fully fitted into the pegs 5 to hold it upright.

On the other hand, a lifter 7 that is moved up and down by a lifting mechanism (not shown) is attached to the rear of the machine frame 1, and the upper surface 1 of the lifter 7 is
c has a peg 8 protruding upward, and a roving hobbin 6
Can be held standing. A conveyor rail 9 runs on the top of the machine frame 1 for conveying the roving hobbin 6 to the spinning machine.
The rail 9 is provided with a transport magazine 10 for gripping and transporting the hobbin 6 carried upward from the nu-recorder 7Vc.
is hanging.

As shown in FIG. 2, on the right side of the machine frame 1, there are a pair of left and right support rails 11 and 12 extending in the front-rear direction (direction perpendicular to the paper surface of FIG. 2) from a suitable drive mechanism (not shown) Ic. A movable support arm 13 is attached which is reciprocated along.

A hobbin gripping device 14 of the present invention is attached to the tip of the support arm 13. The hobbin gripping device 14 includes an air cylinder 15 attached downward to the support arm 13vc.
and two actuating rods 19, 19 which are similarly attached to the support arm 13 via the support member 16, and which are attached in parallel to the rod 17 of the air cylinder 15 via the connecting plate 18, and both rods. 19. The gripping mechanism 19 is comprised of a pair of left and right gripping mechanisms 20.degree. Since these gripping mechanisms 20, 21 have similar configurations, only one gripping mechanism 20 will be described in detail.

A support cylinder portion 16 provided on a support member 16 as shown in FIG.
A chuck body 22 in the form of a cylinder with a lid is attached to B so as to be able to reciprocate in the vertical direction. The insertion hole 23B and the insertion hole 22 transparently provided in the upper cover plate 22a of the chuck body 22.
b, the actuating rod 19 is passed through so as to be able to reciprocate in the vertical direction. A cam member 2 is mounted on the operating rod 19.
5 is fitted and fixed to the actuating rod 19 by the pin 26. On the other hand, the inner circumferential surface of the chuck tenon 22 has a groove 22C for guiding both ends of the bottle 26, as shown in FIG.
is provided to prevent the chuck body 22 from rotating. The upper surface of the cap 23 and the cam member 2
A coiled push-down spring 27 is interposed between the chuck tenon 22t so as to surround the operating rod 19.
- Pressing downward brings the cover plate 22a into pressure contact with the upper surface of the cam member 25.

As shown in FIG. 4, in the lower half of the outer circumference of the chuck tenon 22, three grooves 22d are formed in the circumferential direction at different angles and are long in the vertical direction.

In each of these mounting grooves 22dK, a chuck lever 28 having a claw portion 2Bae that is engaged with the collar portion 6a of the hobbin 6 at the lower end thereof is rotatably supported by a pin 29 at an intermediate portion thereof. A cam follower 30 is rotatably supported at the upper end of the valley chuck lever 2B, and a small-diameter first cam [1112511° tapered second cam surface 25b] is formed on the cam member 25 from the bottom to the top. It is in rolling contact with a third cam surface 250 having a large diameter. The chuck levers 28 are connected to the cam followers 3 by springs 31, respectively.
0 is biased in the direction in which the cam member 25 is pressed against the cam member 25.

There are three receiving grooves 22d in the upper part of the chuck body 22.
One of the mounting grooves 22d extends upward, and the stop lever 32 is rotatably mounted thereon from the bin 33'iC. The nuclear stop lever 32 is pressed against the cam surface of the cam member 25 by a spring 34. Also, l! A part of the stop lever 32 includes the chap body 22.
A stop pin 35 is fixedly attached to the outer peripheral surface of the lever 32 to regulate the position of the lever 32.

On the other hand, on the upper surface of the support member 16, an operation section 32a is provided which projects horizontally from the upper part of the stop lever 32.
The operating shaft 31 is connected via the bracket 36 so as to correspond to the
is rotatably supported.

The tip of the actuating shaft 37 is formed with a semi-cylindrical notch, and the operation of the stop lever 32 is controlled depending on which of the flat part 37a and the circular arc part 3γb comes into contact with the operating part 32aVc. It has become. na memory operating axis 3
As shown in FIG. 6, an operating lever 38 is fixed to the other end of 7, and is biased and held by a spring 39 so that the flat portion 37a is on the upper side.

Next, the operation of the loading device configured as described above will be explained.

FIG. 3 shows a state in which the gripping mechanism 2o is in a standby position above the hobbin 6. At this time, when a bobbin gripping command is issued, the air cylinder 15 is operated, and the rod 17 moves the operating rod 19 downward, the gripping mechanism 20 is lowered together. Then, as shown in FIG.
3 is in contact with the upper surface of the hobbin 6 and the body 22 is stopped, and when the cam member 25 is moved downward together with the operating rod 19 while compressing the spring 21, the second cam surface 25
The cam follower 3o is pushed by bVc, and thereby the chuck lever 28 is rotated in a direction to grip the hobbin 6, and the upper part of the Q hobbin 6 is gripped by the claw portion 28 alcj.

When the actuating rod 19 and the cam member 25 are moved to the lowest position as shown in FIG.
Since the cam member 25 is removed from the lower end of the stop lever 32, the stop lever 32 is rotated by the spring 34 about the flap 33 in the direction of the arrow in FIG. 7, and enters the upward movement trajectory of the cam member 25.

The rod 17 of the air cylinder 15 is moved upward from the state in which the hobbin 6 is completely gripped as shown in FIG. Then, the entire gripping mechanism 20 is moved upward together with the hobbin 6. Therefore, the 8th
When the gripping mechanism 20 is moved to the uppermost position as shown in the figure, the lower end of the bobbin 6 comes off the upper end of the peck 5, and removal of the small bottle 6 is completed. Thereafter, the movable support arm 13 shown in FIG. 2 is moved rearward along the support rail 11.12, the hobbin gripping device 14 is moved in the same direction and above the lifter 7, and the operating lever 3B is moved. Machine frame IVc
The actuating shaft 37 is rotated against the elastic force of the spring 39 when it comes into contact with the provided dock (path shown), and the arcuate portion 37b is turned upward as shown in FIG.

The state shown in Fig. 8 (corresponding to the gripping mechanism 20 and lid 7)
When the actuating rod 19 is moved down, the gripping mechanism 20
Then, the hobbin 6 is moved down, and the bobbin 6 is moved down as shown in FIG.
The lower end of the stop lever 32 is fitted onto the peck 8, and the operating portion 32a of the stop lever 32 is activated.
7b, the stop lever 32 is rotated in the direction of the arrow in the figure against the elastic force of the spring 34, and is retracted from the movement trajectory of the cam member 25.

Thereafter, in FIG. 9, when the actuating rod 19 is moved upward and the cam member 25 is moved upward, the cam follower 30 is rolled from the third cam surface 250 of the cam member 25 to the first cam surface 25B. The chuck lever 28 releases the grip on the hobbin 6, and thereafter the gripping mechanism 20 is lifted up empty.

Further, when the gripping device 14 is moved laterally by the driving support part 13 onto the carrier vehicle 4 and returned to its original position,
(The lever 38 of the operating shaft 37 is docked).

The planar portion 37B is separated from the cylindrical portion 37B and faces upward in preparation for the ninth pipe transfer operation.

Now, in the embodiment of the present invention, after the chuck body 22 is brought into contact with the upper end surface of the hobbin 6, the operating rod 19vc
, m, move the cam part ladle 25 down and chuck/(-2
8B is rotated in the gripping direction to grip the hobbin 6t, and in this gripping state, the upper movement full stop lever 32 of the cam member 25 is restricted, so that the chuck lever 2
The claw portion 2811 of 8 is in the normal gripping position, that is, the bobbin 6
When the hobbin 6 is moved to a position directly below the flange 6a, the gripping operation is performed only on the hobbin 6, and as a result, the gripping operation of the hobbin 6 can be performed reliably. Furthermore, since the gripping operation becomes reliable, the speed of the gripping operation can be increased.

Note that the present invention can also be embodied in the following embodiments: (1) In the above embodiment, the operating shaft 37fc was provided on the support part 16 upper II[I, but this may be omitted and the chuck body・
- An operating portion 32B' of the stop lever 32 and a dock (path shown) to be operated when the lever 22 is moved down on the lifter 7 side are provided on the machine frame 1 side.

(2) In the example described in 1Ttl, Chuckle/X-2f
l The rotation is made by the cam member 25, but this is made to operate by a connecting link (path shown) between the operating rod 19 and the upper end of the lever 2B. In this case, the spring 31 can be omitted.

(3) In the embodiment described in iii, the stop lever 32 is used as the member for regulating the position of the cam member 25, but this can be replaced by a rod (path shown) that reciprocates in the pole direction. In this case, it is also necessary to change the mechanism for controlling the rod's protrusion and retraction.

(4) In the above embodiments, the present invention is applied to a loading device for a roving hobbin, but the present invention can be applied to a device for gripping various bobbins other than that.

As described in detail above, in the present invention, since the bobbin gripping operation is started after the lower end of the chuck tenon comes into contact with the upper part of the bobbin, the bobbin can be gripped completely reliably and quickly.

[Brief explanation of the drawing]

FIG. 1 is a right side view showing an embodiment of the bobbin gripping device of the present invention as a roving hobbin loading device;
The figure is a box diagram showing an enlarged view of the main parts of Figure 1, Figure 3 is an enlarged vertical sectional view of the bobbin gripping device, Figure 4 is a cross-sectional view of the chuck body, Figure 5 is a bottom view of the cap, FIG. 6 is a side view showing the mounting structure of the operating shaft, and FIGS. 7 to 9 are vertical cross-sectional views of the central portion, respectively, illustrating the function of the bobbin gripping device. Bobbin gripping device 14, air cylinder 15, support member 16
, operating rod 19, gripping mechanism 20.21, chuck body 22, cam member 25, push-down retainer 27, chuck lever 28, cam follower 30, spring 31, stop lever 32, spring 34, actuation offer 37, operating lever 38, spring 39゜Patent applicant Toyoda Automatic Loom Works Co., Ltd. No. 1ilJ

Claims (1)

[Claims] A chuck tenon is mounted on a 1° support member so that it can reciprocate in the vertical direction, and an operating rod that is reciprocated in the vertical direction by an appropriate drive device is inserted through the chuck body. Similarly, the chuck tenon is rotatably provided with a chuck lever that can grip the upper end of the bobbin that is held upright in a fixed position.
Between the chuck lever and the operating rod, the chuck lever is stopped by coming into contact with the lower end of the chuck body or the upper end of the chuck body. A mechanical operating mechanism is provided to rotate the chuck tenon in the NU gripping direction by fully utilizing the lowering movement of the subsequent operating rond, and furthermore, the chuck tenon numeral nU is provided with a bobbin gripping operation using the chuck lever. A mechanical locking mechanism is provided to lock the operating rod to the chuck body when the chuck body is moved, and to release the lock between the chuck body and the operating rod when the chuck tenon is moved downward to release the grip on the bobbin. bobbin gripping device. 2 A cam member for pushing a cam follower rotatably supported on the upper end of the chuck lever is fitted and fixed on the operating rod, and the chuck lever is rotated by a spring in the direction of releasing the grip on the bobbin. Further, a stop lever is attached to the chuck body so as to be able to move in and out of the upward movement trajectory of the cam member, and is urged by a spring in the direction of entering the trajectory, and the stop lever is configured to release the bobbin from gripping the bobbin. 2. The bobbin gripping device according to claim 1, further comprising an operation section for retracting the stop lever from within the trajectory when the stop lever is moved. 8 An operating shaft having a flat part and an arcuate part is disposed on the support member in correspondence with the operating part of the stop lever, and the operating shaft is attached to a spring so that the flat part F#U faces upward. 2. The hobbin gripping device according to claim 1, further comprising an operating lever which is pushed by a dock fixed to the operating shaft in a fixed position.