CN211388955U - Roll cutting device - Google Patents

Abstract

The utility model relates to a roll-cutting device, which mainly solves the problem of low production efficiency of the roll-cutting device in the prior art, and comprises a knife rest, two bearing seats arranged on the knife rest, two mounting seats, a knife roll and a bottom roll, wherein the bottom roll comprises a fixed shaft, a roll body and two end covers, the roll body is arranged outside the fixed shaft through the bearing sleeves, the two end covers are respectively sleeved on the two transverse sides of the fixed shaft and are fixedly connected with the two transverse end surfaces of the roll body through bolts, the two mounting seats are respectively and fixedly arranged on the two transverse sides of the knife rest, the mounting seats comprise an upper mounting seat and a lower mounting seat, the two transverse ends of the fixed shaft are respectively arranged between the upper mounting seat and the lower mounting seat, the upper mounting seat and the lower mounting seat are respectively connected through bolts for clamping the fixed shaft, the two bearing seats are respectively arranged on the upper sides of the two mounting seats, a first spring is arranged between the bearing seats, and adjusting devices for adjusting the pressing force of the knife roller are arranged at the two transverse ends of the knife rest.

Description

Roll cutting device

Technical Field

The utility model relates to a roll and cut device.

Background

Referring to fig. 1 and 2, the conventional hobbing device includes a tool holder 1 ', two upper bearing seats 2 ', two lower bearing seats 3 ', a cutter roller 4 ' and a bottom roller 5 ', wherein the tool holder 1 ' includes a front support plate 11 ', a rear support plate 12 ' and a cross beam 13 ' enclosing a square frame, a square through hole 6 ' is cut in the middle of the front surface of the front support plate 11 ' and the rear support plate 12 ' for passing a material, the through hole is defined as extending in a transverse direction along the length direction of the front support plate 11 ' and extending in a longitudinal direction along the cross beam 13 ', the two lower bearing seats 3 ' are respectively fixedly disposed at two transverse ends of the tool holder 1 ' and located between the front support plate 11 ' and the rear support plate 12 ', two transverse ends of the bottom roller 5 ' are respectively disposed on the lower bearing seats 3 ' through bearings 7 ', the two upper bearing seats 2 ' are respectively fixedly disposed at the upper sides of the two lower bearing seats 3 ', the two transverse ends of the knife roll 4 ' are respectively arranged on the upper bearing block 2 ' through bearings 8 ', the knife roll 4 ' and the bottom roll 5 ' are both solid structures, the weight of the knife roll is larger, for example, the rolling and cutting device for preparing adult pull-ups is taken as an example, the weight of the knife roll is about 490 kilograms, and the weight of the bottom roll is about 390 kilograms, so that the following defects exist in the operation process:

1. the hobbing device adopts belt pulley connection belt transmission, when the running speed of the equipment reaches 270 revolutions per minute, the bearing load is large due to the belt transmission and the heavy weight of the knife roll and the bottom roll, and the temperature of the knife roll and the bottom roll is rapidly increased due to the friction of the knife roll and the bottom roll, so that the knife roll and the bottom roll are slightly deformed, the cutting of a knife tool is poor, the speed of the equipment is reduced or the temperature of the knife tool is stopped to be reduced, and the production efficiency is influenced;

2. when equipment needs to be stopped suddenly according to a connection principle or other reasons, the knife roll and the bottom roll are heavy, the inertia is large, the centrifugal force is large in high-speed rotation, the strong twisting phenomenon of the knife roll and the bottom roll is caused, the knife edge of the knife roll and the surface of the bottom roll are damaged, and the service life of the knife roll and the surface of the bottom roll are seriously influenced.

Under the condition that the problems cannot be overcome, the traditional rolling cutting device cannot effectively improve the rotating speed under the condition of ensuring the service life of equipment, so that the production efficiency is improved.

SUMMERY OF THE UTILITY MODEL

Therefore, to foretell problem, the utility model provides a roll and cut device, it has mainly solved the problem that roll and cut the production efficiency of device and hang down among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a hobbing device comprises a tool rest, two bearing seats arranged on the tool rest, two mounting seats, a cutter roller and a bottom roller, wherein the definition is that the axial direction of the cutter roller extends to a transverse direction, the bottom roller comprises a fixed shaft, a hollow roller body and two end covers, the roller body is arranged on the outer side of the fixed shaft through the bearing sleeves, the two end covers are respectively sleeved on the transverse two sides of the fixed shaft and are fixedly connected with the transverse two end faces of the roller body through bolts, the two mounting seats are respectively and fixedly arranged on the transverse two sides of the tool rest, each mounting seat comprises an upper mounting seat and a lower mounting seat, the transverse two ends of the fixed shaft are respectively arranged between the upper mounting seat and the lower mounting seat, the upper mounting seat and the lower mounting seat are respectively connected through bolts in a locking manner and are used for clamping the fixed shaft, the two bearing seats are respectively arranged on the upper sides of the two mounting seats, a first spring is arranged between the bearing seats, the, and adjusting devices for adjusting the pressing force of the knife roller are arranged at the two transverse ends of the knife rest.

Further, adjusting device is including adjusting pole, connecting plate, two threaded rods and two second springs, it rotationally locates in the frame and is located the bearing frame upside to adjust the pole, the lower part threaded connection of connecting plate and regulation pole, it is provided with two through-holes to lie in the week side of adjusting the pole on the connecting plate, two the threaded rod passes through-hole and bearing frame threaded connection respectively, two the second spring overlaps respectively and locates on the threaded rod and lie in between bearing frame and the connecting plate.

Furthermore, the lower part of the upper mounting seat and the upper part of the lower mounting seat are respectively provided with a yielding groove, and the two transverse ends of the fixing shaft are respectively embedded into the yielding grooves.

By adopting the technical scheme, the beneficial effects of the utility model are that: the rolling cutting device has the advantages that the roller body on the bottom roller is arranged to be a hollow structure and is sleeved on the fixed shaft through the bearing, so that the weight of the bottom roller is greatly reduced, in addition, as for the rolling cutting device for preparing the pull-up pants for adults, the weight of the rolling cutting device is reduced to about 210 kg from about 390 kg originally, the bearing is arranged in the roller body, compared with the prior rolling cutting device in which the bearing of the bottom roller is arranged on the bearing seats on the two sides of the knife rest so that the shaft is easy to deform after being pressurized, the improved distance between the two bearings is shortened, the transverse supporting length of the bearing for the roller body is shortened, so that the strength of the roller body is improved, the improvement is combined, when the rolling cutting device operates, the driving device independently drives the knife roller to rotate through the transmission device, the pressing force between the knife roller and the bottom roller is adjusted through the adjusting device, and the friction force between the material and the knife, meanwhile, the friction force between the material and the roller body is also increased, the knife roll also plays a role in pulling the material when rotating for cutting, the material is conveyed to provide power for the rotation of the roller body, the weight of the roller body is combined to be smaller, the rotation of the roller body is further easily driven, the hobbing is realized, a belt is saved in the driving process, the knife roll and the bottom roll are simultaneously driven to rotate, the knife roll is only driven independently, the load force of a bearing is reduced, the rotating speed of the knife roll is effectively improved, the bottom roll is driven to rotate by the knife roll, the weight of the bottom roll is low, so that when the bottom roll rotates at high speed or is in a sudden stop, the centrifugal force of the knife roll and the bottom roll is small, strong torsion cannot be generated, the damage phenomenon of the knife roll and the bottom roll is further avoided, the hollow roller body is favorable for heat dissipation, the vibration of the high-speed rotation is small, the inertia is low, the service life of the knife roll can be ensured when the requirement of, greatly improving the production efficiency and reducing the production cost.

Drawings

FIG. 1 is a schematic diagram of a front view configuration of a prior art embodiment;

FIG. 2 is a schematic left view of a prior art embodiment;

fig. 3 is a schematic front view of an embodiment of the present invention;

fig. 4 is a left side view structure diagram of the embodiment of the present invention.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and detailed description.

The embodiment of the utility model provides a do:

referring to fig. 3 and 4, a roll cutting device includes a tool post 1, two bearing seats 2, two mounting seats 3, a knife roll 4, a bottom roll 5 and a first spring 6, which define a transverse direction extending along an axial direction of the knife roll 4, the tool post 1 includes a front support plate 11, a rear support plate 12, an upper cross beam 13 and a lower cross beam 14 enclosing a square frame, the front support plate 11 and the rear support plate 12 are fixedly connected with the upper cross beam 13 and the lower cross beam 14 through bolts, the bottom roll 5 includes a fixed shaft 51, a hollow roll body 52 and two end covers 53, the roll body 52 is sleeved outside the fixed shaft 51 through a bearing 54, the middle parts of the two end covers 53 are respectively provided with through holes, the fixed shaft 51 is respectively sleeved on two transverse sides of the fixed shaft 51 through the through holes and fixedly connected with two transverse end faces of the roll body 52 through the bolts, one side face of the end cover 53 close to the roll body 52 is abutted, the limiting function is achieved, the bearing 54 is prevented from moving transversely, the two installation bases 3 are fixedly arranged on the two transverse sides of the tool rest 1 respectively, each installation base 3 comprises an upper installation base 31 and a lower installation base 32, the lower portion of each upper installation base 31 and the upper portion of each lower installation base 32 are provided with a yielding groove 7, the two transverse ends of each fixing shaft 51 are arranged between the corresponding upper installation base 31 and the corresponding lower installation base 32 respectively and embedded into the yielding grooves 7, the yielding grooves 7 play a role in limiting movement of the fixing shafts 51 and reducing vibration in rapid rotation of the roller bodies 52, the upper installation bases 31 and the lower installation bases 32 are connected through bolts in a locking mode and are used for clamping the fixing shafts 51, the two bearing bases 2 are arranged on the upper sides of the two installation bases 3 respectively, the first springs 6 are arranged between the bearing bases 2 and the installation bases 3, the two transverse ends of the cutter rollers 4 are arranged on the bearing bases 2 through bearings 8 respectively, and the two transverse ends (namely on the two upper cross beams 13) of the.

In this embodiment, the adjusting device 9 includes an adjusting lever 91, a connecting plate 92, two threaded rods 93 and two second springs 94, the adjusting lever 91 is rotatably disposed on the upper beam 13 and located above the bearing seat 2, a scale 95 is disposed on the upper beam 13 and is matched with the adjusting lever 91 to facilitate displaying the rotation angle of the adjusting lever 91 and improve the adjustment accuracy, the connecting plate 92 is in threaded connection with the lower portion of the adjusting lever 91, two through holes 96 are disposed on the connecting plate 92 and located on the periphery of the adjusting lever 91, the two through holes 96 and the adjusting lever 91 are located on the same straight line, the two threaded rods 93 are respectively in threaded connection with the bearing seat 2 through the through holes 96, the two second springs 94 are respectively sleeved on the threaded rods 93 and located between the bearing seat 2 and the connecting plate 92, by rotating the adjusting lever 91, the connecting plate 92 in threaded connection with the adjusting lever 91 rotates relative, the rotation of the adjusting lever 91 changes the distance between the connecting plate 92 and the bearing seat 2, so as to drive the compression distance of the second spring 94 to change, further change the force of the second spring 94 acting on the bearing seat 2, and change the pressing force of the knife roll 4.

The knife rest of the hobbing device is also provided with a knife roll wiping knife device 20 and a bottom roll wiping knife device 30 which are respectively used for removing residues on the surfaces of the knife roll 4 and the bottom roll 5, which are the prior art and not described in detail herein.

The utility model discloses a working method is: in the rolling cutting device, a roller body 52 on a bottom roller 5 is arranged into a hollow structure and is sleeved on a fixed shaft 51 through a bearing 54, so that the weight of the bottom roller 5 is greatly reduced, and in addition, as an example of the rolling cutting device for preparing adult pull-ups, the weight of the rolling cutting device is reduced from about 390 kilograms originally to about 210 kilograms, and the bearing 54 is arranged in the roller body 52, compared with the prior rolling cutting device in which the bearing of the bottom roller is arranged on bearing seats at two sides of a knife rest so that the deformation is easy to generate after the shaft is pressurized, the distance between the two improved bearings 54 is shortened, the transverse supporting length of the bearing 54 for the roller body 52 is shortened, so that the strength of the roller body 52 is improved, and in combination with the improvement, when the rolling cutting device is operated, a driving device independently drives the knife roller 4 to rotate through a transmission device, the pressing force between the knife roller 4 and the bottom roller 5 is adjusted through an adjusting device 9, the friction force between the material and the knife roll 4 is increased, the friction force between the material and the roll body 52 is also increased, the knife roll 4 plays a role in pulling the material while rotating for cutting, the material is conveyed to provide power for the rotation of the roll body 52, the weight of the roll body 52 is smaller in combination, the rotation of the roll body 52 is further easily driven to realize rolling cutting, a belt is omitted in driving to simultaneously drive the knife roll 4 and the bottom roll 5 to rotate, the knife roll 4 is only driven independently, the load force of a bearing is reduced, the rotation speed of the knife roll 4 is effectively increased, the rotation of the bottom roll 5 is driven by the knife roll 4, the weight of the bottom roll 5 is low, so that when the knife roll 4 and the bottom roll 5 rotate at high speed or stop suddenly, the centrifugal force of the knife roll 4 and the bottom roll 5 is small, strong torsion cannot be generated, the damage phenomenon of the knife roll 4 and the bottom roll 5 is further avoided, the hollow roll body 52 is favorable for heat dissipation, the vibration of high-speed, when the linear speed requirement of 400 revolutions per minute of rated production equipment is met, the service lives of the knife roll 4 and the bottom roll 5 can be ensured, the production efficiency is greatly improved, and the production cost is reduced.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. A roll cutting device is characterized in that: the roller comprises a knife rest, two bearing seats, two mounting seats, a knife roll and a bottom roll, wherein the two bearing seats, the two mounting seats, the knife roll and the bottom roll are arranged on the knife rest, the definition is that the axial direction of the knife roll extends to the transverse direction, the bottom roll comprises a fixed shaft, a hollow roll body and two end covers, the roll body is arranged outside the fixed shaft through a bearing sleeve, the two end covers are respectively sleeved on the transverse two sides of the fixed shaft and are fixedly connected with the transverse two end faces of the roll body through bolts, the two mounting seats are respectively and fixedly arranged on the transverse two sides of the knife rest, each mounting seat comprises an upper mounting seat and a lower mounting seat, the transverse two ends of the fixed shaft are respectively arranged between the upper mounting seat and the lower mounting seat, the upper mounting seat and the lower mounting seat are respectively connected through bolts in a locking manner and are used for clamping the fixed shaft, the two bearing, and adjusting devices for adjusting the pressing force of the knife roller are arranged at the two transverse ends of the knife rest.

2. The roll-cutting apparatus of claim 1, wherein: adjusting device is including adjusting pole, connecting plate, two threaded rods and two second springs, it just is located the bearing frame upside to adjust the pole rotationally to locate in the frame, the connecting plate is with the lower part threaded connection who adjusts the pole, it is provided with two through-holes to be located the week side of adjusting the pole on the connecting plate, two the threaded rod passes through-hole and bearing frame threaded connection respectively, two the second spring overlaps respectively and locates on the threaded rod and be located between bearing frame and the connecting plate.

3. The roll cutting apparatus according to claim 1 or 2, wherein: the lower part of the upper mounting seat and the upper part of the lower mounting seat are respectively provided with a yielding groove, and the two transverse ends of the fixing shaft are respectively embedded into the yielding grooves.

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