CN218625331U - Speed ratio box of inlet extrusion tablet press - Google Patents

Abstract

The utility model discloses an import is extruded tablet press velocity ratio case belongs to and is smelted technical field, including long screw assembly, short screw assembly and velocity ratio case box, long screw assembly includes the long screw rod body, big self-aligning bearing, thrust bearing and little self-aligning bearing, big self-aligning bearing suit is at the middle part of the long screw rod body, the middle part of the long screw rod body is leaned on the right side and is hugged closely big self-aligning bearing suit thrust bearing, thrust bearing's right side is leaned on the little self-aligning bearing of right-hand member suit of the long screw rod body, short screw assembly mounting structure is unanimous with long screw assembly, the part of the big self-aligning bearing of long screw assembly suit, thrust bearing and little self-aligning bearing is installed at velocity ratio incasement downside, the part of the big self-aligning bearing of short screw assembly suit, thrust bearing and little self-aligning bearing is installed at velocity ratio incasement upside. The utility model discloses it is not enough mainly to have solved the velocity ratio case structural strength, and the stress is not good with lubricated oil leak scheduling problem.

Description

Speed ratio box of inlet extrusion tablet press

Technical Field

The utility model belongs to the technical field of smelt gluey, a technical field who extrudes the tablet press in gluey workshop is related to, especially, relate to an import extrusion tablet press velocity ratio case.

Background

Extrusion presses are widely used equipment in the rubber industry, more critical equipment in tire manufacturing plants. When the extrusion tablet press works, the inside of a machine barrel is fully accumulated with rubber, the rubber is pushed to the front part of a small head from a large head by a screw, the reaction force of the rubber acts in the speed ratio gear box body while pushing, the current box body is designed to bear insufficient force, the box body is brittle and broken, a broken part is wound on the surface of the speed ratio gear, the gear can be damaged, and the equipment is easily in an unstable working state.

The design structure of the prior speed ratio box body is thin oil lubrication, the thin oil lubrication has high requirements on the mechanical structure and the sealing performance of an external pipeline, and oil leakage or oil seepage on the surface of the box body is easy to occur.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned weak point that exists among the prior art, the utility model provides an import is extruded tablet press speed ratio case for speed ratio case designs weak fracture problem among the solution prior art, improves the structure simultaneously, has avoided the problem of running the leakage.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a preparation tablet press speed ratio case is extruded in import, including long screw assembly, short screw assembly and speed ratio case box, long screw assembly includes the long screw rod body, big self-aligning bearing, thrust bearing and little self-aligning bearing, big self-aligning bearing suit is at the middle part of the long screw rod body, big self-aligning bearing suit thrust bearing is hugged closely by the right side in the middle part of the long screw rod body, thrust bearing's the right side leans on the little self-aligning bearing of right-hand member suit of the long screw rod body, short screw assembly mounting structure is unanimous with long screw assembly, the big self-aligning bearing of long screw assembly suit, the downside is installed at speed ratio case box to thrust bearing and little self-aligning bearing's part, the big self-aligning bearing of short screw assembly suit, the upside is installed in speed ratio case box to thrust bearing and little self-aligning bearing's part.

The surface of the short screw rod body close to the opposite end of the speed ratio box body is provided with a first spiral ridge, the surface of the long screw rod body close to the opposite end of the speed ratio box body is provided with a second spiral ridge, the first spiral ridge and the second spiral ridge are meshed and rotated together inwards to extrude materials, when the extrusion tablet press works, the short screw rod body and the long screw rod body rotate relatively, the materials in the short screw rod assembly and the long screw rod assembly move to convey the materials from one ends of the short screw rod assembly and the long screw rod assembly to one ends of the first spiral ridge and the second spiral ridge, in the working process, the internal materials have reaction force on the short screw rod assembly and the long screw rod assembly, the short screw rod assembly and the long screw rod assembly are transmitted to the thrust bearing after being stressed, the force of the thrust bearing is transmitted to the speed ratio box body, the minimum clearance at the position of the thrust bearing ensures the friction force of the short screw rod assembly and the long screw rod assembly, and the speed ratio box body bears the reverse axial force of the short screw rod assembly and the long screw rod assembly.

Furthermore, an adjusting pad is arranged between the large self-aligning bearing and the thrust bearing and is tightly attached to the large self-aligning bearing and the thrust bearing, the adjusting pad is installed according to the gap between the large self-aligning bearing and the thrust bearing, after the large self-aligning bearing and the thrust bearing are installed, the gap between the large self-aligning bearing and the thrust bearing is measured, and the adjusting pad which is installed into the gap.

Furthermore, the rear wall of the thrust bearing, which bears the rear acting force, keeps a certain thickness, is at least thickened to more than 86 millimeters, and is integrated with the speed ratio box body, so that the axial bearing capacity is increased, the contact area between the bottom surface of the thrust bearing and the speed ratio box body is increased in multiples, the pressure on the speed ratio box body is reduced under the condition that the axial force is not changed, the condition that the stress on the speed ratio box body is not enough can be prevented, and the situation that the speed ratio box body is broken in a brittle manner and a broken part is rolled into the surface of the speed ratio gear to damage the speed ratio gear is avoided.

Furthermore, the thrust bearing comprises a retainer, an inner ring assembly and an outer ring, wherein the retainer wraps the inner ring assembly, the inner ring assembly comprises a rolling body, the rolling body is arranged on the outer side of the inner ring assembly, the thrust bearing is mainly used for bearing radial and axial combined loads mainly comprising radial loads, the bearing capacity is high, and the limit rotating speed is low.

Furthermore, the thrust bearing adopts a tapered roller bearing, the tapered roller bearing can bear the axial load in one direction, the axial displacement in one direction of the shaft or the shell can be limited, the inner ring component of the thrust bearing is tightly matched with the long screw rod body and the short screw rod body and is fixed on the long screw rod body and the short screw rod body, the inner ring component is in clearance fit with the outer ring and is directly assembled, the outer ring can be separated from the inner ring component, according to the specification of the external dimension standard of the ISO tapered roller bearing, the outer ring or the inner ring component of the tapered roller bearing in any standard model can realize international interchange with the outer ring or the inner ring component in the same model.

Furthermore, the large self-aligning bearing is tightly matched with the long screw rod body and the short screw rod body, the thrust bearing is tightly matched with the long screw rod body and the short screw rod body, the small self-aligning bearing is tightly matched with the long screw rod body and the short screw rod body, and the small self-aligning bearing is assembled on the long screw rod body and the short screw rod body after the size is enlarged through the heating inner sleeve.

Furthermore, the large self-aligning bearing, the thrust bearing and the small self-aligning bearing on the long screw component and the large self-aligning bearing, the thrust bearing and the small self-aligning bearing on the short screw component are assembled and installed in the speed ratio box body in a conventional press-in mode, and technicians in the industry only need to install and operate according to the attached operating instructions without creative labor of the technicians in the field.

Furthermore, the speed ratio box body is made of cast steel, the most important advantage of the cast steel is high flexibility, the general cast steel has very large selection design freedom in the size and the shape of a casting in the design process, the cast steel also has a large variation range in the weight, the isotropy of the cast steel material and the overall structure of the cast steel material are very strong, so the reliability of the engineering is greatly improved, the middle part of the speed ratio box body is an opening structure and is conveniently installed on a speed ratio gear, the large self-aligning bearing and the thrust bearing are clamped on the left side of the opening structure and are attached to the radian of the speed ratio box body, the small self-aligning bearing is clamped on the right side of the opening structure and is attached to the radian of the speed ratio box body, the overall structure is more compact and stable, and the support of the bearing is strengthened, so that the problems of cracking of the speed ratio box body and the like are avoided.

Furthermore, the speed ratio box body is provided with dry oil lubrication points, the edge of the speed ratio box body is provided with oil return holes, and grease, polymer and other dry oil lubrication is used for replacing thin oil lubrication, so that the oil leakage problem is solved.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses can be through the effectual axial force that short screw assembly and the long screw assembly transmission come of bearing of thrust bearing, big self-aligning bearing and little self-aligning bearing no longer bear too big axial force, the corresponding extension of life, thrust bearing's rear portion supports and keeps certain thickness, with velocity ratio case box structure as an organic whole, and is sturdy and durable, design the adjustment pad according to the clearance between big self-aligning bearing and thrust bearing, guarantee original thrust bearing's minimum play, can avoid velocity ratio case box bearing capacity not enough and the brittle fracture that leads to, prevent that the fracture piece from being drawn into on the velocity ratio gear face, avoid causing the destruction to the velocity ratio gear.

2. The utility model discloses a set up reasonable drier oil lubrication point and oil gallery, use the drier oil lubrication to replace the thin oil lubrication, solved the problem that the thin oil leaked in appearance, do not influence the use of speed ratio gear and bearing, avoided the speed ratio case to ftracture once more, the relative thin oil lubrication of drier oil lubrication is lower to the mechanical structure and the outside pipeline sealing performance requirement of speed ratio case box simultaneously, practices thrift the cost.

Drawings

Fig. 1 is a top view of the present invention;

FIG. 2 is a schematic structural view of the short screw rod body of the present invention;

FIG. 3 is a front view of the speed ratio box body of the present invention;

fig. 4 is a schematic cross-sectional view of a thrust bearing according to the present invention;

fig. 5 is a schematic structural view of the large aligning bearing of the present invention.

Reference numerals:

1. a long screw assembly; 2. a short screw assembly; 3. a long screw rod body; 4. a short screw rod body; 5. a speed ratio box body; 6. a large self-aligning bearing; 7. a thrust bearing; 8. a small self-aligning bearing; 9. an oil return hole; 10. a first helical ridge; 101. a second spiral ridge; 11. an adjustment pad; 12. a holder; 13. an inner race assembly; 14. an outer ring; 15. and a rolling body.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

In the present invention, the numbering of the components itself, such as "first", "second", etc., is used only to distinguish the objects depicted, and does not have any order or technical meaning. The terms "connected" and "coupled" when used herein, unless otherwise indicated, include direct and indirect connections. It is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used herein for the purpose of describing the invention only and are not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed or operated in a particular orientation, and is in no way to be construed as limited by the present invention.

As shown in fig. 1-4, the utility model discloses a long screw assembly 1, short screw assembly 2 and speed ratio case box 5, long screw assembly 1 includes the long screw rod body 3, big aligning bearing 6, thrust bearing 7 and little aligning bearing 8, 6 suit at the middle part of the long screw rod body 3 of big aligning bearing, the middle part of the long screw rod body 3 is leaned on the right side and is hugged closely big aligning bearing 6 suit thrust bearing 7, thrust bearing 7's right side is leaned on the little aligning bearing 8 of right-hand member suit of the long screw rod body 3, 2 mounting structure of short screw assembly is unanimous with long screw assembly 1, the big aligning bearing 6 of long screw assembly 1 suit, downside in speed ratio case box 5 is installed to the part of thrust bearing 7 and little aligning bearing 8, the big aligning bearing 6 of 2 suit of short screw assembly, upside in speed ratio case box 5 is installed to the part of thrust bearing 7 and little aligning bearing 8.

The surface of the short screw rod body 4 close to the opposite end of the speed ratio box body 5 is provided with a first spiral ridge 10, the surface of the long screw rod body 3 close to the opposite end of the speed ratio box body 5 is provided with a second spiral ridge 101, the first spiral ridge 10 and the second spiral ridge 101 are meshed together and rotated inwards to extrude materials, when the extrusion tablet press works, the short screw rod body 4 and the long screw rod body 3 rotate relatively, the materials in the short screw rod assembly 2 and the long screw rod assembly 1 move to convey the materials from one ends of the short screw rod assembly 2 and the long screw rod assembly 1 to one ends of the short screw rod assembly 2 and the long screw rod assembly 1, the surfaces of the short screw rod assembly 2 and the surfaces of the long screw rod assembly 1 are provided with the first spiral ridge 10 and the second spiral ridge 101, in the working process, the internal materials have reaction force on the short screw rod assembly 2 and the long screw rod assembly 1, the short screw rod assembly 2 and the long screw rod assembly 1 are subjected to force and then transmitted to the thrust bearing 7, the force of the thrust bearing 7 is transmitted to the speed ratio box body 5, and the axial force of the short screw rod assembly 2 and the long screw rod assembly 1 is borne by the thrust bearing.

Preferably, an adjusting pad 11 is arranged between the large aligning bearing 6 and the thrust bearing 7, the adjusting pad 11 is tightly attached to the large aligning bearing 6 and the thrust bearing 7, the adjusting pad 11 is installed according to the gap between the large aligning bearing 6 and the thrust bearing 7, after the large aligning bearing 6 and the thrust bearing 7 are installed, the gap between the large aligning bearing 6 and the thrust bearing 7 is measured, and the adjusting pad 11 is installed in the gap.

Preferably, the rear wall of the thrust bearing 7 bearing the rear acting force is kept in a certain thickness, is at least thickened to be more than 86 millimeters, is integrated with the speed ratio box body 5, the axial bearing capacity is increased, the contact area of the bottom surface of the thrust bearing 7 and the speed ratio box body 5 is multiplied, the pressure on the speed ratio box body 5 is reduced under the condition that the axial force is not changed, the condition that the stress on the speed ratio box body 5 is insufficient can be prevented, and the situation that a broken piece is rolled into the surface of the speed ratio gear to damage the speed ratio gear due to brittle fracture of the speed ratio box body 5 is avoided.

Preferably, the thrust bearing 7 comprises a retainer 12, an inner ring assembly 13 and an outer ring 14, the retainer 12 wraps the inner ring assembly 13, the inner ring assembly 13 comprises a rolling body 15, the rolling body 15 is installed on the outer side of the inner ring assembly 13, and the thrust bearing 7 is mainly used for bearing radial and axial combined loads mainly including radial loads, and is large in bearing capacity and low in limit rotating speed.

Preferably, the thrust bearing 7 is a tapered roller bearing, the tapered roller bearing can bear axial load in one direction and can limit axial displacement of the shaft or the shell in one direction, the inner ring assembly 13 of the thrust bearing 7, the long screw rod body 3 and the short screw rod body 4 are in tight fit and are fixed on the long screw rod body 3 and the short screw rod body 4, the inner ring assembly 13 and the outer ring 14 are in clearance fit and are directly assembled, the outer ring 14 can be separated from the inner ring assembly 13, and according to the specification of the external dimension standard of the ISO tapered roller bearing, the outer ring 14 or the inner ring assembly 13 of any standard type tapered roller bearing can be internationally exchanged with the outer ring 14 or the inner ring assembly 13 of the same type.

Preferably, the large aligning bearing 6 is tightly fitted with the long screw rod body 3 and the short screw rod body 4, the thrust bearing 7 is tightly fitted with the long screw rod body 3 and the short screw rod body 4, the small aligning bearing 8 is tightly fitted with the long screw rod body 3 and the short screw rod body 4, and the large aligning bearing is assembled on the long screw rod body 3 and the short screw rod body 4 after being enlarged in size by heating the inner sleeve.

Preferably, the large self-aligning bearing 6, the thrust bearing 7 and the small self-aligning bearing 8 on the long screw assembly 1 and the large self-aligning bearing 6, the thrust bearing 7 and the small self-aligning bearing 8 on the short screw assembly 2 are mounted into the speed ratio box body 5 by adopting conventional press-in type assembly, and the persons skilled in the art only need to mount and operate according to the attached use specifications without creative labor of the persons skilled in the art.

Preferably, the speed ratio box body 5 is made of cast steel, the most important advantage of the cast steel is high flexibility, the general cast steel has very large selection design freedom in the size and shape of a casting in the design process, the cast steel also has a large variation range in the weight, the isotropy of the cast steel material and the overall structure of the cast steel material are very strong, so the reliability of the engineering is greatly improved, the middle part of the speed ratio box body 5 is an opening structure and is conveniently installed on the speed ratio gear, the large self-aligning bearing 6 and the thrust bearing 7 are clamped on the left side of the opening structure and are attached to the radian of the speed ratio box body 5, the small self-aligning bearing 8 is clamped on the right side of the opening structure and is attached to the radian of the speed ratio box body 5, the overall structure is more compact and stable, and the support reinforcement of the bearing avoids the problems of the speed ratio box body 5 such as cracking.

Preferably, the speed ratio box body 5 is provided with dry oil lubrication points, the edge of the speed ratio box body 5 is provided with an oil return hole 9, and grease, polymer and other dry oil lubrication is used for replacing thin oil lubrication, so that the oil leakage problem is solved.

The utility model discloses when assembling, earlier with big self-aligning bearing 6, thrust bearing 7 and little self-aligning bearing 8 through the tight fit suit in proper order on the long screw rod body 3 and the short screw rod body 4, install behind big self-aligning bearing 6 and the thrust bearing 7 and match installation adjustment pad 11 according to its clearance, long screw rod subassembly 1 after the assembly is good and short screw rod subassembly 2 is through conventional forced assembly into speed ratio case box 5.

The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (10)

1. The utility model provides an import extrusion tablet press velocity ratio case which characterized in that: including long screw assembly, short screw assembly and velocity ratio case box, long screw assembly includes the long screw body of rod, big self-aligning bearing, thrust bearing and little self-aligning bearing, big self-aligning bearing suit is at the middle part of the long screw body of rod, the middle part of the long screw body of rod leans on the right side to hug closely big self-aligning bearing suit thrust bearing, thrust bearing's the right side leans on the little self-aligning bearing of right-hand member suit of the long screw body of rod, short screw assembly mounting structure is unanimous with long screw assembly, the part of the big self-aligning bearing of long screw assembly suit, thrust bearing and little self-aligning bearing is installed at velocity ratio case box internal downside, the upside in velocity ratio case box is installed to the part of the big self-aligning bearing of short screw assembly suit, thrust bearing and little self-aligning bearing.

2. An inlet extrusion tablet press speed ratio box according to claim 1, wherein: the surface of the opposite end, close to the speed ratio box body, of the short screw rod body is provided with a first spiral protruded ridge, the surface of the opposite end, close to the speed ratio box body, of the long screw rod body is provided with a second spiral protruded ridge, and the first spiral protruded ridge and the second spiral protruded ridge are meshed inwards and rotated together to extrude materials.

3. An inlet extrusion tablet press speed ratio box according to claim 1, wherein: an adjusting pad is arranged between the large self-aligning bearing and the thrust bearing, is tightly attached to the large self-aligning bearing and the thrust bearing, and is arranged according to the clearance between the large self-aligning bearing and the thrust bearing.

4. An inlet extrusion tablet press speed ratio box according to claim 1, wherein: the rear wall of the thrust bearing, which bears the rear acting force, keeps a certain thickness, is at least thickened to over 86 millimeters, and is integrated with the speed ratio box body.

5. An inlet extrusion press speed ratio box according to claim 1 wherein: the thrust bearing comprises a retainer, an inner ring assembly and an outer ring, wherein the retainer wraps the inner ring assembly, the inner ring assembly comprises a rolling body, and the rolling body is arranged on the outer side of the inner ring assembly.

6. An inlet extrusion press speed ratio box according to claim 1 wherein: the thrust bearing adopts a tapered roller bearing, an inner ring component of the thrust bearing is tightly matched with the long screw rod body and the short screw rod body and is fixed on the long screw rod body and the short screw rod body, and the inner ring component is in clearance fit with the outer ring and is directly assembled.

7. An inlet extrusion press speed ratio box according to claim 1 wherein: the large self-aligning bearing is tightly matched with the long screw rod body and the short screw rod body, the thrust bearing is tightly matched with the long screw rod body and the short screw rod body, the small self-aligning bearing is tightly matched with the long screw rod body and the short screw rod body, and the small self-aligning bearing is fixed on the long screw rod body and the short screw rod body through the heating inner sleeve.

8. An inlet extrusion tablet press speed ratio box according to claim 1, wherein: and the large self-aligning bearing, the thrust bearing and the small self-aligning bearing on the long screw component and the large self-aligning bearing, the thrust bearing and the small self-aligning bearing on the short screw component are assembled and installed into the speed ratio box body in a press-in mode.

9. An inlet extrusion press speed ratio box according to claim 1 wherein: the speed ratio box body is made of cast steel, the middle part of the speed ratio box body is of an opening structure, the large aligning bearing and the thrust bearing are clamped on the left side of the opening structure and attached to the radian of the speed ratio box body, and the small aligning bearing is clamped on the right side of the opening structure and attached to the radian of the speed ratio box body.

10. An inlet extrusion tablet press speed ratio box according to claim 1, wherein: the speed ratio case box is provided with a dry oil lubricating point, and the edge of the speed ratio case box is provided with an oil return hole.

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