CN208054521U - One kind at the uniform velocity driving unwinding device - Google Patents

Abstract

The utility model discloses one kind at the uniform velocity driving unwinding device, is related to packaging material production field.The device includes supporting mechanism, transmission mechanism and hold-down mechanism, and the supporting mechanism includes paper supporting shaft and is separately positioned on the support plate at the paper supporting shaft both ends；The transmission mechanism includes synchronous toothed belt, and the synchronous toothed belt inner surface is equipped with rotating wheel, and the synchronous tooth profile band is equipped with tensioning apparatus and servo motor；The hold-down mechanism includes pressure plate, and the pressure plate is set to the side of the synchronous toothed belt, and the pressure plate is connected with the rotating wheel, and one end of the pressure plate is articulated in rack.The utility model proposes at the uniform velocity driving unwinding device, synchronous toothed belt drives paper roll uniform rotation, and hold-down mechanism makes synchronous toothed belt combine closely always with paper roll, reasonable for structure, and worker is facilitated to change paper, improves and packs productivity.

Description

One kind at the uniform velocity driving unwinding device

Technical field

The utility model is related to packaging material production fields, and in particular to one kind at the uniform velocity driving unwinding device.

Background technology

In the production process of steel bead wire, steel bead wire oxidation by air in order to prevent, steel bead wire needs after offline It to be packed at once, steel wire is exposed to phenomena such as air can cause steel wire aoxidize, change colour, getting rusty, and the tension for reducing steel wire is strong The performances such as degree and torsion, and then lead to the bonding of steel wire and rubber, the binding efficiency of steel wire reduces, and influences steel wire quality.And we Know, when general package packing machine packs packaging object automatically, required packing timber such as paper can be rolled into paper roll, carry out When automatic packaging, the expansion by paper roll automatic steady is needed to be sent to next procedure, this process is referred to as unreeling.Package packing machine Technology often require that the paper uniform motion gone out from unreeling structure, in order to meet the requirement of this uniform motion, if paper roll It is the rotation axis driving by paper roll center, then paper can be accelerated with the reduction of diameter；In addition with the effect of inertia, Paper roll also can be with paper uncontrolled because velocity of rotation is getting faster, causing the paper tape length of paper delivery considerably longer than to need The length of band and generate folding, to influence being smoothed out for packing work, substantially reduce packaging production efficiency.

Utility model content

In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of at the uniform velocity drivings to unreel dress It sets, hold-down mechanism makes synchronous toothed belt be contacted always with paper roll, and synchronous toothed belt can drive paper roll uniform rotation.

To achieve the above objectives, the technical scheme adopted by the utility model is that：

Supporting mechanism comprising paper supporting shaft and the support plate for being separately positioned on the paper supporting shaft both ends；

Transmission mechanism comprising synchronous toothed belt, the synchronous toothed belt inner surface are equipped with multiple rotating wheels, the synchronization Toothed belt is equipped with tensioning apparatus；

Hold-down mechanism comprising pressure plate, the pressure plate be set to the synchronous toothed belt side, the pressure plate with The rotating wheel is connected, and one end of the pressure plate is articulated in rack.

Based on the above technical solution, it is set respectively on two rotating wheels of the synchronous toothed belt head and the tail There are the first connecting shaft and the second connecting shaft, the rotating wheel to pass through first connecting shaft and the second connecting shaft and the pressure plate It is connected.

Based on the above technical solution, the pressure plate is equipped with sliding groove, and second connecting shaft passes through described Sliding groove is connected with the pressure plate.

Based on the above technical solution, the tensioning apparatus includes nutted rod and adjusting nut, the nutted rod with The adjusting nut is threadedly coupled.

Based on the above technical solution, second connecting shaft is equipped with through-hole, and the nutted rod passes through described logical Hole controls front and back position of second connecting shaft on the nutted rod by rotating the adjusting nut, described to control The tensioning degree of synchronous toothed belt.

Based on the above technical solution, the diameter of the nutted rod is less than second connecting shaft.

Based on the above technical solution, it is set on the paper supporting shaft there are two retainer plate, the retainer plate is close described The side of support plate is equipped with fastening nut.

Based on the above technical solution, the paper supporting shaft is threadedly coupled with the fastening nut.

Based on the above technical solution, the pressure plate is equipped with carrying handle.

Compared with prior art, the utility model has the advantage of：

This at the uniform velocity unreels driving device, and by the way that hold-down mechanism is arranged in the top of paper supporting shaft, hold-down mechanism connects by first Spindle and the second connecting shaft and the synchronizing moving in synchronous tooth profile band connection and realization vertically, the principle of foundation gravity, Pressing device makes synchronous toothed belt be closely linked always with paper roll, ensures the reduction synchronous toothed belt with sizes of rolls It can still be fitted closely with paper roll, so that it is guaranteed that paper roll always can uniform rotation；It is additionally provided with strainer, passes through adjusting nut Whenever the elasticity for adjusting the horizontal position in-migration control toothed belt for being connected in the second connecting shaft on rotating wheel, ensure toothed belt Phenomena such as paper roll can at the uniform velocity be driven, prevent skidding；Retainer plate is equipped on paper supporting shaft, it can be when paper roll be in rotation by paper Phenomena such as rolling up and fixed on paper supporting shaft, avoiding the occurrence of displacement and wrapping paper is caused to be broken is to influence packaging process.This practicality is new Type is reasonable for structure, and worker is facilitated to change paper while unreeling structure can be made at the uniform velocity to operate always, improves packaging productivity.

Description of the drawings

Fig. 1 is the structural schematic diagram of at the uniform velocity unwinding device in the utility model embodiment.

In figure：1- supporting mechanisms, 10- paper supporting shafts, 11- support plates, 12- retainer plates, 13- fastening nuts, 2- transmission mechanisms, 20- synchronous toothed belts, 21- rotating wheels, 22- tensioning apparatus, 220- nutted rods, 221- adjusting nuts, the first connecting shafts of 23-, 24- Second connecting shaft, 3- hold-down mechanisms, 30- pressure plates, 31- sliding grooves, 32- carrying handles.

Specific implementation mode

The embodiments of the present invention are described in further detail below in conjunction with attached drawing.

Shown in Figure 1, the utility model embodiment provides a kind of at the uniform velocity unwinding device, including supporting mechanism 1, supports machine Structure 1 includes paper supporting shaft 10 and the support plate 11 for being separately positioned on 10 both ends of paper supporting shaft, and placement is equipped in the support plate 11 at both ends Slot, paper supporting shaft 10, which is removably set up on placing groove, constitutes supporting structure, and paper supporting shaft 10 passes through the center of wrapping paper to keep it outstanding Sky is on supporting structure, in order to paper delivery.It is equipped with transmission mechanism 2 in the top of supporting mechanism, transmission mechanism 2 includes synchronous tooth profile Band 20, rotating wheel 21 and servo motor, multiple rotating wheels 21 equidistantly distribute side by side in synchronous toothed belt 20 inner surface and with The inner surface of synchronous toothed belt 20 fits closely, and so that synchronous toothed belt 20 is obtained outer surface and constitutes smooth continuous transmission surface, servo Motor then drives synchronous toothed belt 20 to move by driving the rotation of rotating wheel 21, and the surface of synchronous toothed belt 20 and wrapping paper Contact, therefore, servo motor transmission synchronous toothed belt 20 while can drive wrapping paper to rotate, to realize automatic paper.? Here, servo motor can convert voltage signal to torque and rotating speed to accurately control the velocity of rotation of rotating wheel 21, thus Speed can be unreeled according to virtual package production requirement come arbitrary adjusting wrapping paper by realizing.Wrapping paper is unreeling in order to prevent Global displacement or shake occurs due to rotational motion or excessive velocities in the process, the both ends of wrapping paper are all provided on paper supporting shaft 10 There are two retainer plate 12, retainer plate 12 is sheathed on paper supporting shaft 10 and can be any appropriate structure, from structure design and production The angle of cost is set out, and retainer plate 12 is preferably concentric structure.It is equipped on the side of support plate 11 in retainer plate 12 tight Gu nut, correspondingly, paper supporting shaft 10 is equipped with the third screw thread that matches with fastening nut 13, according to being placed on paper supporting shaft 10 The size of wrapping paper come the arbitrary position for adjusting fastening nut, while ensureing that wrapping paper is nonvoluntary mobile during unreel And it can stable operation.

Shown in Figure 1,20 side of synchronous toothed belt is equipped with hold-down mechanism 3, and hold-down mechanism 3 includes an elongated pressure plate 30, pressure plate 30 is parallel set on the side of synchronous toothed belt 20, and one end of pressure plate 30 is articulated in the rack of a structure, because This, pressure plate 30 vertically can arbitrarily be rotated around articulation joint.Positioned at two rotating wheels 21 of 20 head and the tail of synchronous toothed belt On be respectively equipped with the first connecting shaft 23 and the second connecting shaft 24, correspondingly, on pressure plate 30 be equipped with the first connecting shaft 23 and Second connecting shaft, 24 corresponding through-hole, the first connecting shaft 23 and the second connecting shaft 24 pass through through-hole to make rotating wheel 21 and pressure plate 30 It is connected, by the second connecting shaft 24, pressure plate 30 can drive synchronous toothed belt 20 and rotating wheel 21 whole perpendicular around articulation joint edge Histogram is to synchronous rotation.According to the principle of gravity sag, pressing device 3 makes synchronous toothed belt 20 combine closely always with wrapping paper Together, ensure wrapping paper during unreeling, will not because of reel diameter reduction and speed is getting faster, with paper roll The reduction synchronous toothed belt of size can still be fitted closely with paper roll, so that it is guaranteed that paper roll always can uniform rotation, avoid out There is a situation where paper sheet stackings in roll paper area, ensure being smoothed out for packaging process.In order to ensure that wrapping paper was unreeling as far as possible It is not interfered by other factors in journey, pressure plate 30 is separated with a certain distance with wrapping paper here, and the two is not directly contacted with.Work as packaging Paper is finished, and when needing with changing, directly lifts pressure plate 30, is removed paper supporting shaft 10 and is changed new wrapping paper again, for convenience Hand lifts pressure plate 30, and upper in pressure plate 30 is equipped with carrying handle 32, to be conveniently operated.Wherein carrying handle 32 may be provided in pressure Any place on tight plate 30, from the angle of structure design, carrying handle 32 is preferably located at the front end of pressure plate 30, makes user It can be more effortless when lifting.

Shown in Figure 1, tensioning apparatus 22 is arranged in the left side of hold-down mechanism 3, and tensioning apparatus 22 includes 220 He of nutted rod Adjusting nut 221, nutted rod 220 are equipped with the first screw thread to match with adjusting nut 221.Second close to articulation joint end The through-hole that connecting shaft 24 passes through is a sliding groove 31, and sliding groove 31 is parallel with synchronous toothed belt 20, and the second connecting shaft 24 can be in cunning Along slot to sliding in dynamic slot 31.Second connecting shaft 24 is equipped with hole, and the diameter of nutted rod 220 is less than the second connecting shaft 24, tensioning After bar 220 passes through hole, the second moving horizontally on nutted rod 220 of connecting shaft 24 is controlled by rotating adjusting nut 221 The position for the rotating wheel 21 being connect with the second connecting shaft 24 is controlled, to controlling the tightness of synchronous toothed belt 20, is ensured The phenomenon that synchronous toothed belt 20 is not in skidding during being contacted with wrapping paper.Wherein, the second connecting shaft 24 with The inner surface that tight bar 220 intersects is equipped with the second screw thread to match with the first screw thread.

In conclusion when unreeling, wrapping paper is placed on paper supporting shaft 10, according to packaging by first pull-up carrying handle 32 The size of paper regulates the position of retainer plate 12 and tightens fastening nut, ensures to occur while wrapping paper can be rotated arbitrarily Larger displacement；Carrying handle 32 then is put down, pressure plate 30 is made to be shelved naturally on the wrapper together with transmission mechanism 2；It adjusts and opens Adjusting nut 221 on tight device ensures that synchronous toothed belt 20 has suitable elasticity, can carry out good biography to wrapping paper It is defeated；It finally opens servo motor and speed is unreeled according to the adjusting of actual transmissions demand, guarantee unreels process and is smoothed out.

The utility model is not only limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model Go out other various forms of products, however, make any variation in its shape or structure, it is every to have and the utility model phase Same or close technical solution, within its protection domain.

Claims (9)

1. one kind at the uniform velocity driving unwinding device, which is characterized in that it includes：

Supporting mechanism (1) comprising paper supporting shaft (10) and the support plate (11) for being separately positioned on the paper supporting shaft (10) both ends；

Transmission mechanism (2) comprising synchronous toothed belt (20), synchronous toothed belt (20) inner surface are equipped with multiple rotating wheels (21), the synchronous toothed belt (20) is equipped with tensioning apparatus (22)；

Hold-down mechanism (3) comprising pressure plate (30), the pressure plate (30) are set to the side of the synchronous toothed belt (20), The pressure plate (30) is connected with the rotating wheel (21), and one end of the pressure plate (30) is articulated in rack.

2. one kind as described in claim 1 at the uniform velocity drives unwinding device, it is characterised in that：Positioned at the synchronous toothed belt (20) It is respectively equipped with the first connecting shaft (23) and the second connecting shaft (24), the rotating wheel on two rotating wheels (21) of head and the tail (21) it is connected with the pressure plate (30) by first connecting shaft (23) and the second connecting shaft (24).

3. one kind as claimed in claim 2 at the uniform velocity drives unwinding device, it is characterised in that：The pressure plate (30), which is equipped with, to be slided Dynamic slot (31), second connecting shaft (24) are connected across the sliding groove (31) with the pressure plate (30).

4. one kind as described in claim 1 at the uniform velocity drives unwinding device, it is characterised in that：The tensioning apparatus (22) includes Tight bar (220) and adjusting nut (221), the nutted rod (220) are threadedly coupled with the adjusting nut (221).

5. one kind as described in claim 3 or 4 at the uniform velocity drives unwinding device, it is characterised in that：Second connecting shaft (24) It is equipped with through-hole, the nutted rod (220) passes through the through-hole, by rotating adjusting nut (221) control described second Front and back position of the connecting shaft (24) on the nutted rod (220), to control the tensioning degree of the synchronous toothed belt (20).

6. one kind as claimed in claim 5 at the uniform velocity drives unwinding device, it is characterised in that：The diameter of the nutted rod (220) Less than second connecting shaft (24).

7. one kind as described in claim 1 at the uniform velocity drives unwinding device, it is characterised in that：The paper supporting shaft (10) is equipped with two A retainer plate (12), the retainer plate (12) are equipped with fastening nut (13) close to the side of the support plate (11).

8. one kind as claimed in claim 7 at the uniform velocity drives unwinding device, it is characterised in that：The paper supporting shaft (10) with it is described tight Gu nut (13) is threadedly coupled.

9. one kind as described in claim 1 at the uniform velocity drives unwinding device, it is characterised in that：The pressure plate (30) is equipped with and carries Knob handle (32).