JPH0678362U - Bobbin gripping device - Google Patents

Abstract

(57) [Summary] [Objective] To provide a device capable of strongly grasping the end of the pan. [Structure] A gripping mechanism 1 and a drive unit 2 are provided. The gripping mechanism 1 is provided with an end peripheral surface of a bobbin B of a bobbin P inside a main body 3 having an opening 3a for accommodating the head of the bobbin. One end of each of the two segments 7 and 7 to be gripped is pivotally supported, and cam followers 8 and 8 are provided at the other ends, respectively.
A cam 13 is arranged between the segments, the cam followers 8 and 8 are driven by the drive unit 2 at predetermined angles, and a tension spring 11 is provided between the segments 7 and 7 to hold a bobbin. apparatus.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for mainly gripping a pirn, that is, a bobbin, in which a continuous yarn is wound around a cylindrical bobbin in a spindle shape in a fiber factory such as a chemical fiber.

[0002]

[Prior art]

 In a chemical fiber factory, multifilaments are spun at high speed from a spinning machine, and the filaments are wound into various wound shapes to form a wound body. In the normal winding form, a cylindrical bobbin is supported on the horizontal axis, filaments are supplied from a direction orthogonal to this horizontal axis, and the cylindrical bobbin wound up while traversing and the cylindrical bobbin on the vertical axis. There is a spindle-shaped package, that is, a wound bobbin that is supported and is wound by moving a ring provided around the vertical axis up and down.

[0003] In recent years, in a fiber manufacturing factory, the wound bobbin of various shapes wound up in order to reduce the manufacturing cost is automatically removed from the textile machine to supply a new bobbin or the bobbin wound to the textile machine. An automated process such as supply has been adopted.

[0004]

[Problems to be solved by the device]

 When the bobbin is a bun, in order to prevent damage, dirt, and collapse of the winding shape of the bobbin, pegs are erected on the bottom of the storage box or pallet during storage or transportation, and the bottom of the bobbin is fitted to this. , A small gap is placed between the bobbins to store them so that the bobbins do not interfere with each other. On the other hand, the efficiency of fiber production tends to increase the amount of fibers wound up on one bobbin and increase the weight of the bobbin.

As described above, when the bobbin whose lower part is fitted to the peg in the storage box or pallet and supported at a close interval is taken out and supplied to another textile machine, the upper end of the bobbin is manually fed. It is necessary to grasp the part, pull it out above the peg, remove it from the storage box or pallet, transport it to a predetermined position, and insert it into the spindle of the textile machine, for example, the twisting machine while tilting the bobbin.

As an example, the wound bobbin made of a parn has a length of 420 mm and a bobbin diameter of about 130 mm, is long and slender, and weighs 3.5 kg or more. Therefore, it is extremely difficult to lift the head of the bobbin with one hand and insert it into the spindle of the textile machine. Under such circumstances, various mechanical gripping devices have been studied.However, as described above, the work of gripping the upper end of the bobbin of the heavy bobbin and fitting the lower end of the spindle of the textile machine It is necessary to tilt this bobbin. When the bobbin is tilted in this manner, a large moment acts on the gripping part together with the weight. This operation requires a strong grip to withstand a large bending moment, unlike the case where the bobbin is simply gripped and transferred in a suspended state.

When simply supporting the bobbin in a suspended state, a hook-shaped metal fitting that engages with the end of the bobbin can be used, but the head of the bobbin, that is, the tip of the bobbin is gripped. At this time, the length of the bobbin exposed from the end of the bobbin is generally about 20 mm, and it is often difficult to strongly grip this part. In addition, the bobbin may be dropped during handling, but if this bobbin is dropped, the thread may be damaged or the shape of the bobbin may collapse, making it impossible to use the thread. A gripping device that operates reliably to prevent this is required.

Furthermore, when the gripping portion using power is attached to or detached from the end of the bobbin, the bobbin is forcibly forcibly dropped so that the power source such as electricity is lost and the bobbin is not dropped in any case. A mechanism for gripping without power is required. When an automatic machine, such as an automatic yarn feeder, inserts a bobbin into a predetermined spindle of a textile machine, such as a twisting machine, grips the bobbin correctly in the axial direction of the grip of the automatic machine. is necessary. If this grip is not possible, the bobbin is long, so the bobbin ends protruding from both ends of the bobbin, especially the axial position of the grip at the position of the hole at the tip (attachment of the grip arm) If the gripping device of the automatic machine is operated in the correct direction, the tip of the bobbin on the extension line will not be operated in the correct position, and the error will not be inserted in the spindle of the textile machine. There is the problem of making it difficult.

In addition, when a bobbin storage box or pallet is supplied on an automatic machine, the bobbin is long even if the position of the peg fixed to the bottom of the storage box is accurately stopped. In addition, the variation in the position error of the bobbin protruding from the upper end of the bobbin increases. Considering these various problems, the gripper must be able to absorb these errors and accurately grip the head of the bobbin. SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for gripping a bobbin, particularly a pan, which solves the problems of the conventional device.

[0010]

[Means for Solving the Problems]

 A bobbin body gripping device according to the present invention for achieving the above object comprises a gripping mechanism 1 and a drive unit 2, and the gripping mechanism 1 is a body 3 having an opening 3a for accommodating a head of the bobbin body. One end of two segments 7 and 7 for gripping an end peripheral surface of the bobbin B of the bobbin P is pivotally supported inside, and cam followers 8 and 8 are provided at the other ends, respectively, and a cam is provided between the cam followers 8 and 8. 13, the cam followers 8 and 8 are driven by the drive unit 2 at a predetermined angle, and a tension spring 11 is provided between the segments 7 and 7.

[0011]

[Work]

 The segments 7 are arranged on both sides of the peripheral surface of the tip end portion of the bobbin B of the bobbin body P, and the elastic force of the tension spring 11 is applied between these to grip the segment. A gripping force can be given. Further, once the tip of the bobbin B protruding from the end of the bobbin P is gripped, the bobbin B will be gripped unless the cam 13 that opens this segment 7 operates. Therefore, the bobbin wound body P can be reliably gripped regardless of the presence or absence of the drive source.

[0012]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front cross-sectional view of the bobbin body gripping device, and FIG. 2 is a plan view showing its internal structure. A bobbin, in particular, a pan gripping device according to the present invention is configured to clamp a periphery of a tip end portion of a bobbin at a central portion of the bobbin using a plurality of gripping segments.

The winding body gripping device M includes a gripping mechanism 1 and a drive unit 2. This gripping mechanism 1 has a movable mechanism housed in a cylindrical main body 3. The main body 3 has a lower plate portion 3b having a circular hole 3a having a chamfered central portion and a cylindrical shape. It is composed of a peripheral wall portion 3c and a flange portion 3d extending horizontally in four corners of the upper end portion of the peripheral wall portion 3c.

An upper plate 5 is laminated on the upper opening of the main body 3 via a thin plate 4 to form a kind of box. Bearings 5a and 3e are provided on the upper plate 5 and the lower plate portion 3b, respectively, and two shafts 6 are supported between the bearings 5a and 3e. A drive mechanism is housed inside the main body 3. The drive mechanism accommodates two fan-shaped or arc-shaped segments 7 facing each other, and penetrates a hole provided at an end of the segment 7. The shaft 6 is provided to rotatably support the segment 7.

A shaft 9 fixed to the other end of the segment 7 projects into an opening in the central portion of the lid plate 5, and a cam follower 8 is rotatably supported at the tip portion thereof. Then, a pin 10 is erected in the middle of the two segments 7, a tension spring 11 is stretched between the pins 10, and the ends of a bobbin (not shown) of these segments 7 are held by elastic force. It is supposed to do.

An elastic member 12 such as a hard rubber plate is attached to the inner diameter portion of these segments 7, and the inner surface of the elastic member 12 is formed in an arc shape so as to match the peripheral surface of the end portion of the bobbin to form a bobbin.ゞ Holds the entire circumference. On the upper surface of the lid plate 5 which is the upper structure of the gripping mechanism 1, a small capacity motor with a reducer, which is a drive unit 2, is provided via a frame 15, and a bearing provided on the output shaft 16 and the frame 15 of this reducer. A shaft 18 supported by 17 is connected via a coupling 19. A cam 20 is fixed to the tip of the shaft 18, and cam followers 8 are in contact with both sides of the cam 20 as shown in FIG. 2. The cam 20 rotates about 90 ° and the peaks and valleys of the cam 20 are separated. It is designed so that the bobbin can be attached and detached. When the segment 7 holds the bobbin, the cam 20 and the cam follower 8 do not contact with each other, and the elastic force of the spring 11 sufficiently acts on the segment 7.

At the center of the thin plate 4 held between the upper edge of the main body 3 and the cover plate 5, a guide 21 having a cylindrical shape and a conical tip is provided. The guide 21 is inserted into the bobbin located at the center of the bobbin and smoothly guides the bobbin to the gripping mechanism 1. The two arc-shaped segments 7 are housed inside the main body 2, the lower surface is supported by the lower plate 3b, and the upper surface is supported by the thin plate 4 and the lid plate 5, and expanded by the operation of the cam 20 about the shaft 6. The lower plate 3b and the thin plate 4 guide the upper and lower surfaces of the segment 7, so that the inner surface of the segment 7 is not inclined and the head of the bobbin is rotated. That is, the tip of the bobbin is accurately gripped by the arc surface of the elastic member 12.

3 and 4 show the relationship between the bobbin winding body M and the related members that support the bobbin winding body M. The bobbin winding device is provided at the front end of the arm of the robot mechanism of the bobbin automatic changing device. A lever 27 is supported on the supported lever 25 by a pin 26 so as to be swingable within a predetermined range by a pin 28 and a guide groove 29, and a frame of the thread winding device M is supported by a pin 30 at the lower end of the lever 27. 15 is rotatably supported. The lever 30 is supported by the pin 30 and the bolt 31 fixed to the frame 15, and the guide rollers 34 and 35 are supported by the pin 33 provided at the tip of the pin 30 and the lever 32, respectively.

These guide rollers 34 and 35 are for controlling the posture of the bobbin body gripping device M when it is moved up and down by being guided by a cam or guide rail provided in an automatic bobbin changing device (not shown). The yarn winding device P is configured to be guided while avoiding the spindle of the yarn processing device and various members arranged in relation to the spindle. When the yarn winding body P is supplied to the spindle of a yarn processing device such as a twisting machine, a circular opening is made in the main body 3 located below the yarn winding device holding device M supported by the links 25 and 27 as shown in FIG. The bobbin B of the bobbin body P is guided and inserted through the hole 3a.

Then, the tip of the bobbin B is grasped by opening and closing the two segments 7 by operating the cam 20. Then, the guide rollers 34, 35 are guided by a cam provided in an automatic bobbin changing device (not shown) to control the attitude of the lever 32 in the transfer path in accordance with the position to be transferred, so that the end of the thread winding device M is gripped. It is possible to gradually lower the bobbin B while controlling the posture of the wound bobbin P, and insert the lower end of the bobbin B into a spindle of a bobbin winding device such as a twisting machine (not shown). Although the device for gripping the end portion of the pan-shaped bobbin has been described in the above embodiment, the device can also be used in the case of a cylindrical bobbin.

[0021]

[Effect of device]

 The bobbin body gripping device according to the present invention comprises a gripping mechanism 1 and a drive unit 2. The gripping mechanism 1 has a bobbin of a bobbin body P inside a main body 3 having an opening 3a for accommodating the head of the bobbin body. One end of the two segments 7 and 7 for gripping the peripheral surface of the end portion B is pivotally supported, and cam followers 8 and 8 are provided at the other ends, respectively, and a cam 13 is arranged between the cam followers 8 and 8. The cam followers 8 and 8 are driven by the drive unit 2 at predetermined angles, and a tension spring 11 is provided between the segments 7 and 7.

Therefore, the segments 7, 7 are arranged at the tip of the bobbin B at one end of the bobbin P, and the elastic force of the tension spring 11 acts on the segment 7, 7 to grip it, so that the elastic force of the tension spring 11 is increased. Since the gripping force is determined by, a large gripping force can be given. Further, once the tip of the bobbin is grasped, it is grasped unless the cam 20 that opens the segments 7, 7 operates, so that the bobbin P can be grasped surely regardless of the presence or absence of the drive source. You can

[Brief description of drawings]

FIG. 1 is a side view showing a main part of a bobbin body gripping device according to an embodiment of the present invention by cutting it.

FIG. 2 is a plan view showing main components of a drive unit of the apparatus.

FIG. 3 is a side view showing a relationship between a bobbin body gripping device and a member supporting the bobbin body by partially cutting it.

FIG. 4 is a front view of FIG.

[Explanation of symbols]

1 gripping mechanism 2 main body 3a circular hole 3b
Lower plate part 3c Cylindrical part 3d Collar part 3e Bearing 4
Thin plate 5 Lid plate 5a Bearing 6 Shaft 7 Segment 8 Cam follower 9 Shaft 10 Pin 11 Spring 12
Elastic member 15 Frame 16 Output shaft of reduction gear 17 Bearing 18 Shaft 20 Cam 21 Guide 25, 27, 32 Lever 34, 35 Guide roller

Claims (1)

[Scope of utility model registration request] 1. An end peripheral surface of a bobbin B of a bobbin P inside a main body 3 having an opening 3a for accommodating the head of the bobbin. One end of each of the two segments 7, 7 for gripping is attached to the other end, and a cam follower 8, 8 is provided at the other end.
A bobbin body in which a cam 13 is arranged between the segments 8 and the cam followers 8 and 8 are driven by the drive unit 2 at a predetermined angle, and a tension spring 11 is provided between the segments 7 and 7. Gripping device.