CN219586275U - A short cutter roll assembly - Google Patents

Abstract

The utility model discloses a short cutter roller assembly which comprises a roller body, a plurality of blades, two rotating shafts, a compression ring and a compression piece, wherein the blades are arranged in cutter grooves of the roller body; the two ends of the roller body are respectively connected with an external rack in a rotating way through two rotating shafts; the outer surfaces of the two rotating shafts are movably sleeved with a pressing ring, and a plurality of turbulent closing grooves which are in one-to-one correspondence with the blades and are matched with the end parts of the blades in shape are formed in the circumferential direction on one end surface of the pressing ring, which is close to the roller body; and the two rotating shafts are provided with pressing pieces. The pressing ring is movably sleeved on the outer surface of the rotating shaft, so that the rotating shaft can position the pressing ring from the radial direction of the pressing ring, the pressing piece can apply an acting force towards the roller body to the pressing ring, and the pressing piece can position the pressing ring from the axial direction, so that the pressing ring can be fixed at the end part of the roller body; the acting force of the pressing piece on the pressing ring is withdrawn, and the pressing ring can be taken down from the rotating shaft, so that the pressing ring is convenient to assemble and disassemble.

Description

A short cutter roll assembly

technical field

The utility model relates to the technical field of friction material processing, in particular to a short cutter roller assembly.

Background technique

Friction material is a component material used in power machinery that relies on friction to perform braking and transmission functions. It mainly includes brake linings (brake pads) and clutch facings (clutch plates). Friction material is composed of polymer binder (resin and rubber), reinforcing fiber and friction performance regulator, and other compounding agents, and is a product made through a series of production and processing.

Reinforcing fibers used as friction materials need to be chopped. The patent application number 201020674630.4 discloses a knife roll of a fiber chopping machine, which includes a roll shaft and a blade. The outer surface of the roll shaft is provided with an axial knife groove. The blade is inserted into the axial sipes with the cutting edge outward, and the cutting edge protrudes from the outer surface of the roller shaft. End covers for pressing and fixing the roller shaft and the blade are arranged at both ends of the roller shaft.

The above scheme only discloses that the two ends of the roller shaft are provided with end caps for pressing and fixing the roller shaft and the blade, but there is no disclosure about the end cap and its connection structure with the roller shaft, which makes it inconvenient to connect the end cap and the roller shaft and disassembly.

Utility model content

The purpose of this utility model is to overcome the above technical deficiencies, to propose a short cutter roll assembly, to solve the problem that the fiber chopping machine knife roll in the prior art does not disclose the end cover and its connection structure with the roller shaft, so that it is not convenient for the end cover to be connected with the roller shaft. The technical problems of the connection and disassembly of the roller shaft.

In order to achieve the above technical purpose, the technical solution of the utility model provides a short cutter roller assembly, which includes:

The outer surface of the roller body is provided with several sipes along the circumferential direction, and the two ends of the sipes respectively penetrate to the two ends of the roller body;

a plurality of blades, the blades are installed in the grooves, and the length of the blades is not less than the length of the roller body;

Two rotating shafts, the two ends of the roller body are respectively connected to the external frame through the two rotating shafts;

Pressure rings, the outer surfaces of the two rotating shafts are movably sleeved with the pressure rings, and one end surface of the pressure rings close to the roller body is circumferentially provided with several blades corresponding to the blades and shaped turbulence grooves matching the shape of the end of the blade;

Pressing parts, the pressing parts are provided on the two rotating shafts, and the two pressing parts can respectively apply a force towards the roller body to the two pressing rings, so that the two The pressure ring clamps the blade from both ends respectively.

Further, the blade includes a blade body, a knife root and a blade fixedly arranged on both sides of the blade body, and the knife root of the blade is installed in the knife groove.

Further, the sipe extends in the radial direction of the roller body in a cross section perpendicular to the axis of the roller body, and its width gradually decreases; the cross-sectional shape of the knife root is perpendicular to the sipe groove The cross-sectional shape of the axis of the roller body matches.

Further, the cross-sectional shape of the sipe perpendicular to the axis of the roller body and the cross-sectional shape of the knife root are both trapezoidal.

Further, the chopping knife roller assembly also includes several tampons one-to-one corresponding to the blades, the root of the blade and the corresponding tampons are installed in the same knife groove, and the The tampon is located on one side of the knife root, and the tampon can exert a squeezing force on the knife root so that the knife root is fixed in the knife groove.

Further, the cutting edge of the blade installed on the roller protrudes outside the pressure ring along the radial direction of the pressure ring.

Further, the outer surface of the rotating shaft is provided with threads, and the pressing member is a compression nut capable of engaging with the threads on the outer surface of the rotating shaft.

Further, the chopped cutter roller assembly also includes a thrust bearing, the end surface of the pressure ring away from the roller body is fixedly provided with the thrust bearing, and the compression force of the compression nut passes through the thrust bearing passed to the press ring.

Further, an installation groove is opened on the end surface of the pressure ring away from the roller body, the thrust bearing is fixedly installed in the installation groove, and the distal end of the thrust bearing protrudes from the outside of the installation groove.

Further, the chopped cutter roller assembly further includes a locking nut capable of engaging with the thread on the outer surface of the rotating shaft, so as to lock the compression nut.

Compared with the prior art, the beneficial effects of the utility model include:

In the chopped cutter roller assembly, the pressing ring is movably sleeved on the outer surface of the rotating shaft, so that the rotating shaft can be positioned from the radial direction of the pressing ring, and the pressing member can hold the The pressure ring exerts a force towards the roller body, so that the pressure member can position the pressure ring from the axial direction, so that the pressure ring can be fixed on the end of the roller body; The force exerted by the pressing member on the pressure ring can remove the pressure ring from the rotating shaft, so that the assembly and disassembly of the pressure ring is very convenient.

Description of drawings

Fig. 1 is a schematic structural view of a short cutter roller assembly provided by the utility model;

Fig. 2 is a schematic diagram of the installation structure of the blade on the roller body in the present embodiment;

Fig. 3 is an enlarged schematic diagram of part A in Fig. 2;

Fig. 4 is a schematic diagram of the installation structure of the thrust bearing on the pressure ring in this embodiment.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The utility model provides a short cutter roller assembly, the structure of which is shown in Figures 1-3, including a roller body 1, several blades 2, two rotating shafts 3, a pressure ring 4 and a pressure member 5, wherein, The outer surface of the roller body 1 is provided with several sipes 11 along the circumference, and the two ends of the sipes 11 respectively penetrate to the two ends of the roller body 1; Blade 2, the length of the blade 2 is not less than the length of the roller body 1; the two ends of the roller body 1 are respectively connected to the external frame through the two rotating shafts 3; the two rotating shafts 3 The pressure ring 4 is movably sleeved on the outer surface, and the end surface of the pressure ring 4 close to the roller body 1 is circumferentially provided with several blades corresponding to the blade 2 and having the same shape as the blade 2. A turbulent groove (not shown in the figure) whose end shape matches, and the end of the blade 2 is movably inserted in the corresponding turbulent groove on the pressure ring 4; The pressing member 5 is provided, and the two pressing members 5 can respectively apply a force towards the roller body 1 to the two pressing rings 4, so that the two pressing rings 4 can move from Both ends clamp the blade 2 so as to position the blade 2 from the axial direction of the roller body 1 .

In the chopped cutter roller assembly, the pressing ring 4 is movably sleeved on the outer surface of the rotating shaft 3, so that the rotating shaft 3 can be positioned in the radial direction of the pressing ring 4, and the pressing member 5 can apply a force towards the roller body 1 to the pressure ring 4, so that the pressure member 5 can position the pressure ring 4 from the axial direction, so that the pressure ring 4 can be fixed on the the end of the roller body 1; cancel the force of the pressing member 5 on the pressure ring 4, the pressure ring 4 can be removed from the shaft 3, so that the installation of the pressure ring 4 It is very convenient to disassemble.

Specifically, please continue to refer to FIG. 3 , the blade 2 includes a blade body 21 and a blade root 22 and a blade edge 23 respectively fixedly arranged on both sides of the blade body 21, and the blade root 22 of the blade 2 is installed on the blade body. in slot 11.

In order to prevent the blade 2 from coming out of the sipe 11, as a preferred embodiment, the sipe 11 extends radially of the roller body 1 on a cross section perpendicular to the axis of the roller body 1, And its width gradually decreases; the cross-sectional shape of the knife root 22 matches the cross-sectional shape of the knife groove 11 perpendicular to the axis of the roller body 1 . As a specific embodiment, the cross-sectional shape of the knife groove 11 perpendicular to the axis of the roller body 1 and the cross-sectional shape of the knife base 22 are both trapezoidal.

It can be understood that, the sipe 11 extends radially along the roller body 1 on a cross section perpendicular to the axis of the roller body 1 , and its width gradually decreases, and the cross section of the knife base 22 The shape matches the shape of the cross-section of the sipe 11 perpendicular to the axis of the roller body 1, so that the sipe 11 can position the knife root 22 from the radial direction of the roller body 1, avoiding the knife root 22 protrudes from the sipe 11 along the radial direction of the roller body 1 .

In order to further improve the stability of the installation of the blade 2 in the knife groove 11, as a preferred embodiment, the chopped cutter roller assembly also includes a plurality of plugs 6 corresponding to the blades 2 one by one, so The root 22 of the blade 2 and the corresponding tampon 6 are all installed in the same sipe 11, and the tampon 6 is located on one side of the root 22, and the tampon 6 can The knife base 22 exerts a pressing force to fix the knife base 22 in the knife groove 11; specifically, the plug 6 is a wedge-shaped plug with a wedge-shaped cross section.

In order to avoid that the outer diameter of the pressure ring 4 is large and affect the normal operation of the blade 2, as a preferred embodiment, the blade 23 of the blade 2 installed on the roller body 1 runs along the edge of the pressure ring 4 radially protrudes from the outside of the pressure ring 4 .

It can be understood that, since the blade 23 protrudes outside the pressure ring 4 along the radial direction of the pressure ring 4, the outer diameter of the pressure ring 4 is smaller than the roller with the blade 2 The overall outer diameter of the body 1 avoids a larger gap between the pressure ring 4 and the outer roller due to the larger outer diameter, so that the blade 2 can work normally.

In order to simplify the structure, please continue to refer to FIG. 1 , as a preferred embodiment, the outer surface of the rotating shaft 3 is provided with threads, and the pressing member 5 is a compression nut capable of engaging with the threads on the outer surface of the rotating shaft 3 .

It can be understood that, by screwing in the compression nut, the compression nut can exert a force on the compression ring 4 toward the roller body 1, so as to compress the compression ring 4 on the The end surface of the roller body 1 is fixed to the end of the blade 2 .

Since the end of the blade 2 is inserted in the turbulent groove on the end face of the compression ring 4, in order to avoid driving the compression ring 4 to rotate together when the compression nut is screwed in (when the compression nut is screwed into When its end surface is attached to the end surface of the pressure ring 4, continuing to rotate the compression nut may drive the pressure ring 4 to rotate together), so that the blade 2 is bent or even broken by the torque, please refer to Figure 4 , as a preferred embodiment, the chopped cutter roll assembly also includes a thrust bearing 7, and the end surface of the pressure ring 4 away from the roller body 1 is fixedly provided with the thrust bearing 7, and the compression nut The pressing force is transmitted to the pressing ring 4 through the thrust bearing 7 .

It can be understood that the thrust bearing 7 can counteract the moment generated by turning the compression nut, so that the compression ring 4 is only subjected to a compression force towards the roller body 1, thereby avoiding the The blade 2 bends or even breaks due to being subjected to a moment.

In order to realize the installation of the thrust bearing 7 on the pressure ring 4, please refer to FIG. The thrust bearing 7 is fixedly installed in the installation groove 41 , and the distal end of the thrust bearing 7 protrudes outside the installation groove 41 .

In order to prevent the compression nut from loosening with the thread on the outer surface of the rotating shaft 3 after long-term use, as a preferred embodiment, the chopped cutter roller assembly also includes a screw thread that can engage with the thread on the outer surface of the rotating shaft 3 The locking nut 8 is used to lock the compression nut.

It can be understood that tightening the lock nut 8 can apply a pre-tightening force to the compression nut, thereby preventing the compression nut on the rotating shaft 3 from loosening.

In order to understand the utility model conveniently, the working principle of this scheme is described in detail below in conjunction with Fig. 1-Fig. 4:

During installation, one end of the root 22 of a blade 2 and one end of the plug 6 is inserted from one end of the same knife groove 11, and the two ends of the blade 2 are extended from the knife groove 11. The above-mentioned steps are repeated until all the knife grooves 11 of the roller body 1 are loaded with the blades 2 and the plugs 6 .

The following operations are carried out at both ends of the roller body 1 at the same time: the pressure ring 4 with the thrust bearing 7 installed, the pressure member 5, and the lock nut 8 are installed on the rotating shaft 3 in sequence , and align the turbulent grooves of the pressure ring 4 one by one, so that the end of the blade 2 is inserted into the corresponding turbulent groove; tighten the pressing member 5 and the The locking nut 8 is used so that the two pressure rings 4 clamp the blade 2 from both ends.

Finally, the roller body 1 with the rotating shaft 3 is rotated and installed on an external frame through the rotating shaft, and the driving device (such as a motor) of the roller body 1 is turned on to cooperate with the external roller To cut off the friction fiber material.

The specific embodiments of the utility model described above do not constitute a limitation to the protection scope of the utility model. Any other corresponding changes and deformations made according to the technical concept of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (8)

1. A short cutter roll assembly, characterized in that, comprising: The outer surface of the roller body is provided with several sipes along the circumferential direction, and the two ends of the sipes respectively penetrate to the two ends of the roller body; a plurality of blades, the blades are installed in the grooves, and the length of the blades is not less than the length of the roller body; Two rotating shafts, the two ends of the roller body are respectively connected to the external frame through the two rotating shafts; Pressure rings, the outer surfaces of the two rotating shafts are movably sleeved with the pressure rings, and one end surface of the pressure rings close to the roller body is circumferentially provided with several blades corresponding to the blades and shaped turbulence grooves matching the shape of the end of the blade; Pressing parts, the pressing parts are provided on the two rotating shafts, and the two pressing parts can respectively apply a force towards the roller body to the two pressing rings, so that the two The pressure ring clamps the blade from both ends respectively; the outer surface of the rotating shaft is provided with threads, and the pressing member is a compression nut capable of engaging with the threads on the outer surface of the rotating shaft; Thrust bearings, the thrust bearings are fixedly arranged on the end surface of the compression ring away from the roller body, and the compression force of the compression nut is transmitted to the compression ring through the thrust bearings. 2. A kind of chopping knife roller assembly according to claim 1, it is characterized in that, described blade comprises blade main body and the root of a knife and the blade that are respectively fixedly arranged on the two sides of described blade main body, and the root of described blade of described blade installed in the groove. 3. A chopped cutter roll assembly according to claim 2, wherein the knife groove extends radially of the roll body on a cross section perpendicular to the axis of the roll body, and its width Gradually decreasing; the cross-sectional shape of the root of the knife matches the cross-sectional shape of the sipe perpendicular to the axis of the roller body. 4 . The chopped cutter roller assembly according to claim 3 , wherein the cross-sectional shape of the knife groove perpendicular to the axis of the roller body and the cross-sectional shape of the knife root are both trapezoidal. 5. The chopping knife roller assembly according to claim 2, further comprising a plurality of tampons corresponding to the blades one by one, and the root of the blade and the corresponding tampons are installed In the same knife groove, and the tampon is located at one side of the knife root, the tampon can exert a squeezing force on the knife root so that the knife root is fixed in the knife groove. 6. The chopping knife roller assembly according to claim 2, wherein the blade of the blade installed on the roller body protrudes beyond the radial direction of the pressure ring along the radial direction of the pressure ring. external. 7. A chopped cutter roller assembly according to claim 1, wherein an installation groove is opened on the end surface of the pressure ring away from the roller body, and the thrust bearing is fixedly installed in the installation groove , and the distal end of the thrust bearing protrudes outside the installation groove. 8 . The chopped cutter roll assembly according to claim 1 , further comprising a locking nut capable of engaging with the threads on the outer surface of the rotating shaft, for locking the compression nut.