CN202181148U - Single-head initiative rolling-unrolling machine - Google Patents

Abstract

The utility model discloses a single-head initiative rolling-unrolling machine, which comprises a base and a box body arranged on the base. A unilateral suspension arm supporting shaft is arranged in the box body, the supporting shaft is provided with a rotating sleeve in supporting mode, the rotating shelve is connected with a power mechanism, the periphery of the rotating sleeve is provided with a plurality of tensioning tiles, and supporting connecting rods are arranged between the tensioning tiles and the rotating sleeve. The base is arranged on a platform, the platform is provided with a reciprocating motion mechanism, and the outer side of the rotating sleeve is provided with a manual supporting-shrinking mechanism. The manual supporting-shrinking mechanism is arranged on the outer side of the rotating sleeve to adjust the size of the diameter of the arc surrounded by the tensioning tiles, thereby changing supporting tightness of materials rolls supported by the tensioning tiles to adapt to material rolls with different inner diameters. Only manual operations are needed, thereby being simple in structure and convenient to operate.

Description

Single head automatic winding and unwinding machine

technical field

The utility model belongs to the unwinding field of metal strips, belongs to the B21C47 group of the IPC classification number, and can also be used in the unwinding fields of industries such as textiles, printing and dyeing, papermaking, and plastics, and particularly relates to a single-head active winding and unwinding machine . the

Background technique

At present, with the rapid development of the flux-cored wire industry, flux-cored wire manufacturers pay more and more attention to reducing the auxiliary time of equipment operation in order to improve production efficiency. Among them, reducing the time and replacement frequency required for each replacement of steel coils is one of the important means. Therefore, in recent years, there has emerged the use of skeletonless precision rewinding steel strip coils for unwinding. This steel strip coil can directly use the steel strip itself to form a steel strip coil. When all the steel strips are released, there is nothing left on the unwinding machine. Now, you can put a new steel coil directly. The paper tube can also be used as the inner tube of the steel strip roll, and the steel strip is reciprocally wound on the paper tube to form a steel strip roll. When all the steel strips are released, the paper tube can be recovered from the unwinding machine, and the paper tube can also be used for rewinding a new one. steel belt. Using this method to unwind and unwind not only reduces the time and labor intensity for workers to push up and down the I-shaped wheel, but also solves the problem of the turnover of the I-shaped wheel and the problem of the I-shaped wheel when the I-shaped wheel is used as the carrier of the steel coil consumption problem. the

But what existing double-arm unwinding machine has is the repeated combination of existing single head unwinding machine, for example CN201105294Y " double reel uncoiler " discloses a kind of double reel uncoiler in the uncoiling field of cold-rolled strip steel, It contains two sets of transmission parts, two sets of reel parts, one set of telescopic parts, and a rotary part below. The mandrels in the main shafts of the left and right reels are respectively connected with the cylinder rods of the telescopic cylinders through a pair of thrust bearings. The transmission part of the right reel and the telescopic oil cylinder are fixed on the rotary body at the same time. The telescopic oil cylinder coincides with the axes of the mandrel shafts of the left and right reels and is fixed on the top of the rotary body. The boxes of the two sets of reels are respectively fixed on the rotary body. on both sides. Its two sets of reels work intermittently. When one reel is working normally, the other reel can be rolled up at the same time, which saves auxiliary working time and thus improves production efficiency. It not only reduces the floor area of the production line, but also saves investment in equipment. the

The design of the uncoiler is quite satisfactory, and the brake device, transmission device and other devices are all available, but the main shaft of the reel is fixed on the box by bearings. This equipment installs two spherical roller bearings (although not directly described in the text, but those skilled in the art can determine the bearing type without doubt from the drawings in the description) on the two vertical plates of the box, and The main shaft and reel (that is, the part that bears the weight of the steel strip coil) protrude out of the box to form a cantilever beam structure, which is actually exactly the same as the cantilever beam structure of the single-arm uncoiler. The designers essentially stacked common single-arm uncoilers back-to-back. This causes the bearing that is closer to the reel or in other words to be more stressed than the load-carrying part. In order to solve this problem, it is necessary to either replace the bearing with a stronger bearing capacity or replace it with a larger size bearing, both of which will increase the manufacturing cost of the equipment; or at the expense of the bearing life. the

And adopting this structure will cause the length of the rotatable body of the double-arm unwinder to be relatively large, and the rotatable body includes two sets of transmission parts, two sets of reel parts, and one set of telescopic parts. On the one hand, it greatly increases the weight of the rotatable body, as can be seen from the two huge ribs (the limit switches on each side are installed on the ribs), if it is not such a large box, so heavy If the box body is small, there is no need for such a large rib plate for support. Thereby making it impossible to use manpower to turn around, so it will inevitably lead to the need for motors to drive the above-mentioned rotatable bodies to turn around, which further leads to the complexity of the equipment. On the other hand, this structure greatly increases the distance between the drum, that is, the main load-bearing part, and the center of rotation, and moves the heavier part out of the range where the base contacts the ground. If the steel strip coil on the other side has been used up, the center of gravity of the equipment including the steel strip coil will deviate from the support range of the base, so this will greatly increase the risk of equipment overturning. the

In addition, the uncoiler adopts the inclined wedge expansion and contraction mechanism to tension the steel strip coil: the inclined wedge expansion and contraction mechanism includes a three-claw oblique wedge structure, and the oblique expansion block and the inner oblique wedge are connected by a dovetail oblique groove. Moving the inner wedge can push the oblique expansion block to open or move the inner oblique wedge in the opposite direction to retract the oblique expansion block, and can realize self-locking through the angle of the wedge. The internal tensioning method of this structure is generally used in large On a heavily loaded uncoiler. This uncoiler adopts a cantilever structure. In order to ensure that it can bear heavy steel coils, the main shaft used for load-bearing must be thick. In addition, it is very troublesome to process oblique expansion blocks and inner wedges, and they slide on inclined surfaces. To achieve the expansion and contraction of the three jaws, the wear is large, and a specific surface treatment is required on the friction surface, which leads to the high price and bulky size of this large and heavy-duty uncoiler. It can be seen that for the case of a light steel coil, this The uncoiler of this kind of tension mode is extremely uneconomical, is unfavorable for popularizing and applying. This internal tensioning method also requires frequent addition of lubricating oil for maintenance, otherwise it is very easy to wear off the working slope of the oblique expansion block and the internal wedge, resulting in shortened service life. the

Utility model content

The utility model provides a single-head active rewinding and unwinding machine for solving the technical problems existing in the known technology. The rewinding and unwinding machine has a simple structure and is convenient for adjusting the tightness of the material roll. the

The technical scheme adopted by the utility model to solve the technical problems existing in the known technology is: a single-head active unwinding and unwinding machine, including a base and a box installed on the base, and a single A side cantilever support shaft, a rotating sleeve is supported on the supporting shaft, a power mechanism is connected to the rotating sleeve and a number of tension shoes are arranged on the periphery, and a There are supporting connecting rods; the base is installed on a platform, and the platform is provided with a reciprocating mechanism; the outer side of the rotating sleeve is provided with a manual expansion and contraction mechanism. the

The expansion and contraction mechanism includes a horizontal push-pull rod and a support sleeve sleeved on it, and the support sleeve is fixedly connected with the push-pull rod in a circumferential rotation and axial direction,

The outside of the support sleeve is connected to the tension shoe through a tension link;

The outer end of the rotating sleeve is fixedly connected with a nut;

The outer end of the push-pull rod is provided with a handle located outside the support sleeve, and the inner end is provided with a transmission screw section located inside the support sleeve, and the transmission screw section of the push-pull rod is connected to the in the nut. the

An inner positioning device is provided on the tension tile, and the inner positioning device includes an L-shaped connecting vertical plate provided with a vertical positioning part and a horizontal connecting part, the vertical positioning part is located on the inner side of the horizontal connecting part, The horizontal connection part is provided with a horizontal long hole; the tension tile is provided with an inner rib plate along the length direction; the L-shaped connecting vertical plate passes through the horizontal slot on it and the tension tile inner rib plate fixed. the

The winding and unwinding machine includes an outer positioning device; the outer positioning device includes an outer baffle and an outer baffle positioning device. the

The positioning device for the outer baffle includes two horizontal positioning sleeves, one long and one short with different axes, and a guide rod adapted to them, and the guide rod is fixed on the outer peripheral surface of the rotating sleeve through a vertical plate The positioning sleeve is fixed on the inner peripheral surface of the outer baffle through the positioning rod, the positioning sleeve is sleeved on the guide rod, and the fastening mechanism of the positioning sleeve is provided on the guide rod . the

The outer baffle includes an inner ring and spokes affixed thereto;

The outer positioning device includes a locking shoe sleeved outside the tensioning shoe, and the locking shoe is fixedly connected with a set screw and a positioning rod pressed on the tensioning shoe, and the positioning rod passes through the tensioning shoe. The inner ring of the outer baffle is slidably fitted in the spokes of the inner baffle, and the spokes of the inner baffle are radially provided with elongated holes, and the elongated holes are provided with locking locks fixedly connected with the positioning rods. screw. the

A rotation damping braking device is connected to the rotating sleeve. the

The utility model has the advantages and positive effects: by setting a manual stretching mechanism on the outside of the rotating sleeve, the diameter of the arc surrounded by the tensioning tiles can be adjusted, thereby changing the stretching degree of the tensioning tiles on the material roll, so as to It is suitable for various material rolls with different inner diameters; only manual operation is required, the structure is simple and the operation is convenient. the

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the left view of the utility model embodiment 1 after installing the outer baffle;

Figure 4a is a schematic structural view of the outer baffle plate of Embodiment 1 of the present utility model;

Fig. 4b is a schematic diagram of the side sectional structure of Fig. 4a;

Fig. 5 is the structural schematic diagram of the outer baffle plate of embodiment 2 of the present utility model;

FIG. 6 is a side sectional view of FIG. 5 . the

Detailed ways

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Example 1:

Please refer to Figures 1 to 2, a single-head active winding and unwinding machine, including a base 1 and a box body rotatably connected to the base 1, the box body includes a bottom plate 4 and two left and right vertical plates 32 fixed thereon, The two vertical plates 32 are provided with a single-side cantilever support shaft 26, and a rotatable single-arm structure is formed by this structure. the

A rotating sleeve 27 is supported on the supporting shaft 26, and the outer side of the rotating sleeve 27 is provided with a stretching mechanism. the

Several tension shoes 7 are arranged on the periphery of the rotating sleeve 27, and two parallel and equal-length support connecting rods 9 are arranged between each tension shoe 7 and the rotating sleeve 27. In this embodiment, the tension tile 7 is provided with an inner rib plate 8, and the rotating sleeve 27 is provided with an outer rib plate. The other end of 9 is hinged with the outer rib plate 11 of the rotating sleeve. These two parallel and equal-length support links enable the tension shoe to move only in parallel without any rotation or swing. the

The above-mentioned stretching mechanism includes a horizontal push-pull rod 17 and a support sleeve 13. The support sleeve 13 is sleeved on the push-pull rod 17 in a manner of circumferentially rotating and axially fixed. The support sleeve 13 is provided with an outer rib plate. Tension connecting rods 10 are arranged between the inner ribs 8 of the tight tiles, and one end of the tension connecting rods 10 is hinged with the inner ribs 8 of the tension tiles, and the other end is hinged on the outer ribs 12 of the support sleeve. The tension link 10 and the support link 9 connected with the same tension tile inner rib are located in the same plane and arranged in a figure-eight shape. The outside is connected to the tension shoe through a tension link. the

The outer end of the supporting shaft 26 is provided with a nut 22 affixed to the rotating sleeve 27 . the

The outer end of the push-pull rod 17 is provided with a handle positioned at the outside of the support sleeve 13, and the inner end is provided with a transmission screw section, which is connected in the nut 22 through a transmission thread. the

Compared with the double-head uncoiling device disclosed in the patent document CN201525655U, the invention of the utility model is that the supporting seat (equivalent to the supporting sleeve of the present utility model) of the double-head uncoiling device is outside the rotating sleeve, so that the inner diameter of the compression nut Larger, assuming that the moment arm of the worker operating the crank handle is the same, and the slope of the thread is the same, the force used to push the support seat forward is actually smaller, and the quality of the material roll that can be supported is also smaller. In other words, the force required to prop up a large-mass roll is relatively large, even exceeding the normal human strength level, which limits the application of the machine. the

And the transmission screw thread of the present utility model is arranged in the nut 22, and the inner diameter of the screw hole is smaller, and the workman uses the shank of the same torque rotation push-pull rod like this, and the power acting on the push-pull rod is bigger, and the power that drives the support sleeve to advance is also bigger , the quality of the material roll that can be supported is relatively large. In other words, less force is required to prop up a roll of the same mass. the

Please refer to Fig. 1, in order to prevent the steel strip in the steel strip roll from spreading out to the inner side, an inner baffle assembly 2 is provided on the transmission sleeve 28, and the transmission sleeve 28 is fixed on the outside of the rotating sleeve 13, and the inside The baffle assembly is fixed on the outside of the transmission sleeve 28, and the outer end of the transmission sleeve 28 is provided with a shoulder for positioning the inner side of the inner baffle assembly, and the outer side of the inner baffle assembly is tightened by the inner baffle positioning ring 29. , The inner baffle positioning ring 29 is fastened on the transmission sleeve 28 by screws. the

The transmission sleeve 28 is connected with the chain transmission mechanism, and the chain transmission mechanism is driven by the motor reducer 61, and the motor reducer 61 is installed on the casing. The winding and unwinding machine can not only carry out active unwinding operation but also can carry out winding operation, but because there is no reciprocating motion mechanism for arranging wires, it cannot still wind the centerless steel strip coil. the

The base is installed on the reciprocating platform 62, and the reciprocating movement of the platform 62 can be realized by a motor-driven ball screw mechanism, or can be realized by rolling a motor-driven gear on a rack. During the winding process, when the rotating sleeve is rotating, the base is also driven by the ball screw mechanism or the rack and pinion mechanism to perform reciprocating motion to realize cable arrangement. Generally speaking, the base does not need to reciprocate when unwinding, but if in actual use, the distance between the machine and the main machine is small, and the strip with a certain width is not suitable for swinging, the base can also be installed on the reciprocating mechanism. . the

Since the skeletonless precision rewinding steel strip coil is hoisted to the unwinding and unwinding machine, it is impossible to directly press the side of the steel strip coil against the square steel pipe of the inner baffle plate assembly, because the radial direction of the tension shoe When the outer and axial direction moves to the inside of the machine, the movement track of the steel strip coil is the same as the tension shoe supporting it, and there will be a component in the axial direction. If the side of the steel strip coil is directly pressed against the inner baffle plate On the square steel pipe of the assembly, there will be relative movement between the steel strip coil and the tension shoe, and the friction force of the relative movement is relatively large. The inner end edge of the tension shoe may damage the innermost layer or layers of steel strip , resulting in the collapse of the entire steel coil. Therefore, the inner baffle plate assembly cannot be directly used as an axial positioning device for hoisting steel strip coils. When hoisting the steel strip coil, the steel strip coil needs to be placed on the tension shoe. At this time, a positioning device is needed on the tension shoe to control the axial position of the steel strip coil. the

Please refer to FIG. 1 , in this embodiment, the inner rib plate 8 of the tension tile is provided with an inner positioning device 37 , and the inner positioning device is installed at an end of the tension tile rib plate close to the box body. The inner positioning device includes two connecting vertical plates installed on both sides of the tensioned tile rib plate. The connecting vertical plate is L-shaped. The connecting part of the board is provided with a horizontal long hole, and a positioning screw for connecting the vertical board is arranged in the horizontal long hole, and the positioning screw fixes the connecting vertical board and the tensioned tile reinforcement board together. By horizontally moving the connecting vertical plate to control its horizontal relative position with the positioning screw, the relative position of the inner positioning device and the tension shoe can be adjusted to ensure that the inner edge of the steel strip coil can be assembled with the inner baffle plate after it is fully tensioned. The contact of the square tube realizes the positioning of the steel belt. the

Please refer to Fig. 3, Fig. 4a and Fig. 4b. Similar to the inner positioning, an outer positioning device is provided on the outer side of the winding and unwinding machine, and the outer positioning device is a detachable structure. The outer positioning device includes a steel belt outer baffle and an outer baffle positioning device; the steel belt outer baffle includes an outer ring 381, an inner ring 383 and a spoke 382 connecting the outer ring and the inner ring, and the above parts are all made of metal pipes. The outer baffle positioning device includes two guide rods 392 and two positioning sleeves 385; the two positioning sleeves 385 are not coaxial and are all horizontally arranged, and the length of one positioning sleeve is greater than that of the other positioning sleeve, and the two positioning sleeves The sleeves 385 are connected to the inner ring 383 of the outer baffle through the positioning rods 384; the two guide rods 392 are respectively fixed on the outer circumferential surface of the rotating sleeve 27 through the vertical plate 391, and the two guide rods 392 are respectively worn on the Inside the two positioning sleeves 385, the ends of the guide rods 392 are provided with threads, and a positioning nut is threaded on the threads. In this way, through two point positioning and one line positioning, the axis position of the outer baffle device can be limited, and the swing of the outer baffle can be restricted. the

In addition to adopting the above-mentioned positioning nut as the fastening mechanism of the outer baffle on its guide device, other fastening methods can also be used, for example, an eccentric wheel pressing mechanism is provided on the positioning sleeve to realize the fastening function. Or a jacking screw is set on the positioning sleeve to fasten the positioning sleeve and the outer baffle guide rod. the

In this embodiment, a brake disc 6 is fixedly mounted on the inner end of the transmission sleeve 28, and the brake disc is perpendicular to the axis of the rotating sleeve. A plurality of disc brakes 5 are also arranged on the box body, and the brake discs are located on both sides of the disc brake. between the braking planes. A disc brake with a small air pressure can be selected as the damping device during the normal operation of the unwinding and unwinding machine, so that an appropriate tension can be maintained on the released steel belt. Select one or more disc brakes with larger air pressure as the braking device. the

In addition to the brake disc mentioned in this embodiment, a drum brake device can also be selected as the damping and braking device of the unwinding and rewinding machine. the

The working principle of this embodiment is:

1) When the worker needs to put a steel strip coil on the double-head rewinding and unwinding machine, before hoisting the steel strip coil, the damping device or the brake device should be ensured to clamp the brake disc (otherwise the rotating sleeve will rotate with the push-pull rod) , manually rotate the push-pull rod, the screw transmission formed by the screw section of the push-pull rod and the inner screw hole of the support shaft, so that the support sleeve axially fixed on the push-pull rod moves outward, and the angle between the tensioning connecting rod and the axis decreases, and at the same time The angle between the support link and the axis decreases, and the tension shoe moves outward along a circular arc whose radius is the distance between the two hinge points of the support link and the tension link. At the same time, the outer diameter of the tension shoe also decreases. Then shrink. the

Since the axial position of the inner positioning device on the tensioned corrugated panel can be adjusted, it is necessary to adjust and determine the position of the inner positioning device before hoisting the steel strip coil. If the steel strip coil is directly placed on the tension tile, there is no positioning standard, and the workers determine the position of the steel strip coil based on experience, then it is likely to be too large or too small. If the steel strip coil is too close to the outer end , will cause the tension shoe to be tensioned, the inner side of the steel strip coil still cannot touch the square tube of the inner baffle plate, the steel strip coil has no side positioning, and the steel strip on the most side may still collapse. If the inner positioning device is too far away from the outer end, although the square tube of the inner baffle can be used to accurately position the side of the steel strip coil, it will increase the friction distance between the steel strip coil and the tension tile bracket. As far as the steel strip coil is concerned, this will seriously wear the innermost steel strip surface in the steel strip coil, and it will cause difficulties in the subsequent drawing work of drug-cored welding wire production or wire feeding during use; for steel strips with paper tubes as inner tubes Roll, although there is no problem of wearing the surface of the steel belt, it will also increase the wear of the recyclable paper tube. In addition to the wear problem, when the steel strip coil and the tension shoe move relative to each other, the friction force needs to be overcome by the force of rotating the push-pull rod, which will undoubtedly increase the labor intensity of the workers and may make it difficult to manually rotate the push-pull rod. With the addition of the inner positioning device, it can be tightened after it is adjusted in place once, and there is a position reference with good repeatability and accurate positioning every time it is rolled up, and the above problems can be avoided without re-adjustment . the

2) After hoisting the steel strip coil on the tension tile and positioning it axially, manually reversely rotate the push-pull rod, the screw transmission formed by the screw section of the push-pull rod and the inner screw hole of the support shaft, so that the axial direction is fixed on the push-pull rod The support sleeve moves inward, and the support sleeve drives the tension shoe to open outward through the tension connecting rod. the

3) After the tensioning operation is completed, install the outer baffle on the tension tile, and use two positioning sleeves and two guide rods to realize the positioning of the outer baffle, and the two positioning sleeves jointly complete the point positioning, The longer positioning sleeve has also completed the positioning to prevent swinging, and then locks it with a nut to protect the outer edge of the steel strip coil. the

After the outside positioning of the steel strip coil is completed, the active winding and unwinding of the strip can begin. the

Example 2:

The difference from Embodiment 1 lies in the positioning device of the outer baffle. Please refer to Figures 5 to 6, in this embodiment, the positioning device for the outer baffle includes a locking shoe 53 sleeved outside the tensioning shoe, and the locking shoe 53 is fixedly connected with a locking shoe pressed against the tensioning shoe. Set screws and positioning rods 54, the positioning rods slide through the inner ring 55 of the outer baffle and are installed in the spokes 56, the spokes are provided with long holes 561 radially, and the locking screws fixedly connected with the positioning rods are arranged in the long holes . The locking shoe realizes locking by pressing the tightening shoe with the set screw on it, and the positioning rod realizes the positioning by pressing the spoke with the locking screw thereon. the

The above outer baffle positioning device can avoid the problem of difficulty in processing the outer baffle positioning device in Embodiment 1. Because, in Embodiment 1, the outer baffle and the rotating sleeve are completely two irrelevant parts except for the fitting relationship between the positioning sleeve and the guide rod, and the outer baffle guide rod with the positioning sleeve still passes through The vertical plate is welded on the rotating sleeve. After the thermal processing of welding, the whole structure is more likely to produce new errors due to thermal expansion and contraction, or reduce the matching accuracy of the positioning sleeve and the outer baffle guide rod, and increase A large fit clearance is required to ensure the installation. In this way, the instability of the positioning of the outer baffle is improved; or the processing accuracy is improved, and the processing cost is increased. Both options have certain disadvantages. the

In the outer baffle positioning device in embodiment 1, since the outer baffle guide rod is set at the end of the vertical plate, once the guide rod is stressed, for the vertical plate, it is a cantilever beam structure that is only fixed at the tail. Moreover, the outer baffle guide rod itself is also a cantilever beam structure that is only fixed at the tail, which is very unfavorable for load bearing. In order to reduce the negative impact of the cantilever beam structure of the vertical plate, the height of the vertical plate can be reduced, but if the height is reduced, the length of the positioning rod in the positioning device of the outer baffle needs to be increased, and the positioning rod itself is also a cantilever beam structure. If the positioning The length of the rod will inevitably reduce its stiffness and bearing capacity. Moreover, the outer baffle is manually installed on the rewinder after putting the material roll on the unwinder. In order to reduce the labor load of the workers, it is necessary to make the outer baffle as light as possible, so its material is also Choose materials with low density, poor strength or thin wall thickness, so its rigidity is not easy to be too large. These two constitute a contradiction. the

In this embodiment, the positioning device of the outer baffle is changed to a locking shoe directly fitted on the tensioning shoe. The shape and size of the locking shoe match the tensioning shoe, regardless of the outer diameter of the circle formed by the tensioning shoe How to change, the shape of the tensioning tile itself is fixed, so the locking tile can achieve stable cooperation with the tensioning tile. And the change of the outer diameter of the tension shoe during tensioning can be compensated by adjusting the position of the positioning rod in the spoke. In this embodiment, the positioning of the locking shoe is realized by pressing the tightening shoe with the set screw, and the structure is simple and the operation is convenient. the

In this embodiment, the outer baffle plate of the steel belt adopts the structure of a circular plate plus spokes and an inner ring, and the function of the spokes is equivalent to a rib plate. The steel belt outer baffle may also adopt the structure of the outer ring+spoke+inner ring in Embodiment 1. the

Although the preferred embodiment of the utility model has been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative and not restrictive. Under the enlightenment of the utility model, those of ordinary skill can also make many forms without departing from the purpose of the utility model and the scope of protection of the claims, for example, combining components or components with the same function in the above embodiments Replace each other to form technical solutions that are not directly described in the above embodiments, and these all belong to the protection scope of the present utility model. the

Claims (7)

1. A single-head active unwinding and unwinding machine, comprising a base and a box mounted on the base, the box is provided with a single-side cantilever support shaft, and a rotating sleeve is supported on the support shaft, so A power mechanism is connected to the rotating sleeve and several tensioning shoes are arranged on the periphery, and a supporting link is provided between the tensioning shoe and the rotating sleeve; it is characterized in that the base is installed on a platform, The platform is provided with a reciprocating mechanism; the outer side of the rotating sleeve is provided with a manual retraction mechanism. 2. The single-head active unwinding and unwinding machine according to claim 1, characterized in that, the stretching mechanism comprises a horizontal push-pull rod and a support sleeve sleeved on it, and the support sleeve is circumferentially aligned with the push-pull rod Rotational axial fixed connection, The outside of the support sleeve is connected to the tension shoe through a tension link; The outer end of the rotating sleeve is fixedly connected with a nut; The outer end of the push-pull rod is provided with a handle located outside the support sleeve, and the inner end is provided with a transmission screw section located inside the support sleeve, and the transmission screw section of the push-pull rod is connected to the in the nut. 3. The single-head active winding and unwinding machine according to claim 1, wherein the tension shoe is provided with an inner positioning device, and the inner positioning device includes a vertical positioning part and a horizontal connecting part. L-shaped connecting vertical plate, the vertical positioning part is located on the inner side of the horizontal connecting part, and the horizontal connecting part is provided with a horizontal long hole; the tension tile is provided with an inner rib plate along the length direction; the L The vertical connection vertical plate is fixedly connected with the inner rib plate of the tension tile through the horizontal long hole thereon. 4. The single-head active winding and unwinding machine according to claim 1, characterized in that the winding and unwinding machine comprises an outer positioning device; the outer positioning device includes an outer baffle and an outer baffle positioning device. 5. The single-head active unwinding and unwinding machine according to claim 4, characterized in that, the outer baffle positioning device includes two horizontal positioning sleeves with one long and one short with different axes and guides adapted to them The guide rod is fixed on the outer peripheral surface of the rotating sleeve through the vertical plate; the positioning sleeve is fixed on the inner peripheral surface of the outer baffle through the positioning rod, and the positioning sleeve is set on the On the guide rod, a fastening mechanism for the positioning sleeve is provided on the guide rod. 6. The single-head active winding and unwinding machine according to claim 4, wherein the outer baffle includes an inner ring and spokes affixed thereto; The outer positioning device includes a locking shoe sleeved outside the tensioning shoe, and the locking shoe is fixedly connected with a set screw and a positioning rod pressed on the tensioning shoe, and the positioning rod passes through the tensioning shoe. The inner ring of the outer baffle is slidably fitted in the spokes of the inner baffle, and the spokes of the inner baffle are radially provided with elongated holes, and the elongated holes are provided with locking pins fixedly connected with the positioning rods. screw. 7. The single-head active winding and unwinding machine according to claim 1, characterized in that a rotation damping brake device is connected to the rotating sleeve. the

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