CN111660374A

CN111660374A - Multi-wedge belt cutting machine

Info

Publication number: CN111660374A
Application number: CN202010515306.6A
Authority: CN
Inventors: 时宁宁; 闫军; 顾亮峰; 郭伟; 赵洋
Original assignee: Gates Unitta Power Transmission (suzhou) Ltd
Current assignee: Gates Unitta Power Transmission (suzhou) Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-09-15

Abstract

The invention provides a poly-wedge belt cutting machine which comprises a fixed support, a supporting roller, a guide roller, a cutter and a tension roller, wherein one end of the supporting roller is installed on the fixed support, the guide roller and the tension roller are axially arranged in parallel with the supporting roller, and a driving device and a tensioning device are installed on the fixed support.

Description

Multi-wedge belt cutting machine

Technical Field

The invention relates to a polywedge bet cutting machine, in particular to a cutting machine for a die pressing polywedge bet.

Background

The molded multi-wedge belt is a production mode which is widely adopted in recent years by forming wedges or ribs on the surface of the multi-wedge belt through tooth-shaped extrusion in a die, grinding is not needed, workshop dust is reduced, and generation of waste materials is reduced, the specific molding process is shown in a patent document with the publication number of US8632650B2, namely the publication number of US is 1 month and 21 days in 2014, and the patent discloses the molded multi-wedge belt of a wedge-faced belt fabric.

In the cutting process of the die-pressing multi-wedge belt, the rubber sleeve is often required to be tensioned and fixed firstly, the currently adopted cutting mode is that the wedge of the rubber sleeve is turned outwards, the whole rubber sleeve is sleeved on the cutting shaft, then the cutting shaft expands to tension the rubber sleeve, then a guide roller with teeth covered on the outer surface is adopted, the teeth on the guide roller are formed by bulges and grooves, the wedge of the rubber sleeve corresponds to the groove of the guide roller or the wedge groove of the rubber sleeve corresponds to the bulge of the guide roller, the guide roller compresses the rubber sleeve to the supporting roller, so that the supporting roller and the guide roller clamp the rubber sleeve to realize the fixation of the rubber sleeve, and simultaneously, when the rubber sleeve rotates, the bulges or the grooves on the guide roller are meshed with the grooves or the wedges on the rubber sleeve, and then, the cutter is moved to cut along the wedge groove according to the preset width, but in practical application, the phenomenon of multiple wedges, few wedges or half wedges often appears in the cut multi-wedge belt, so that the multi-wedge belt is scrapped, and a technology is urgently needed to be provided for solving the problem.

Disclosure of Invention

The invention provides a poly V-belt cutting machine for solving the technical problems, which comprises a fixed support, a supporting roller, a guide roller, a cutter and a tensioning roller, wherein one end of the supporting roller is arranged on the fixed support, the guide roller, the tensioning roller and the supporting roller are axially arranged in parallel, and a driving device and a tensioning device which are arranged on the fixed support and move relative to the fixed support are connected with the guide roller, the guide roller is driven to move along the direction vertical to the axis of the supporting roller, the tensioning device is connected with one end of the tensioning roller, the tensioning roller is driven to move along the direction vertical to the axis of the supporting roller, the tensioning roller can rotate relative to the tensioning device, and teeth which are distributed along the axis of the guide roller in a segmented manner are arranged on.

The cutting device also comprises a sliding rail arranged on the fixed support along the axis parallel to the supporting roller and a cutter frame capable of moving along the sliding rail, wherein the cutter is rotatably fixed on the cutter frame and can move along the direction vertical to the axis of the supporting roller.

The sliding block is arranged in the tool rest and is parallel to the sliding rail on the fixed support, the screw rod is connected with the motor, and the motor drives the screw rod to rotate so as to drive the tool rest to move along the sliding rail.

The cutters are more than one cutters which are arranged in parallel at intervals.

Also comprises a supporting mechanism which can selectively support the other end of the supporting roller,

the supporting mechanism is of a telescopic structure.

The supporting mechanism is a sliding mechanism.

The support roller has a surface covered with rubber.

The tensioning device is a rotating mechanism which drives the tensioning roller to rotate along the direction perpendicular to the axis of the supporting roller.

Also comprises a tensioning support which can selectively support the other end of the tensioning roller,

the driving device is of a telescopic structure.

The cutting machine also comprises a door of the protection device, wherein the door is closed when cutting is carried out, and is opened after the cutting is stopped.

By adopting the cutting machine, the phenomenon of tooth jumping caused by tolerance accumulation increase caused by the fact that the protrusions or the grooves of the whole guide roller are meshed with the grooves or the wedges on the rubber sleeve due to certain difference of the precision of the guide roller and the rubber sleeve is avoided, the phenomena of more wedges, less wedges or half wedges during cutting are reduced, and the rejection rate of a multi-wedge belt is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a V-ribbed belt cutting machine;

FIG. 2 is a schematic view of a guide roller structure of the V-ribbed belt cutting machine;

fig. 3 is a statistical table of poly wedge belt cutting rejection rate.

In the figure:

1. fixing a bracket; 2. a support roller; 3. a cutter; 4. a tensioning device; 5. a rubber sleeve; 6. a tension roller; 7, V-ribbed belts; 8. a guide roller; 9. a drive device; 10. a support mechanism; 11. a slide rail; 12. a screw rod; 13. a tool holder; 14. tensioning and supporting; 15. a sliding mechanism; 16. teeth; 17. and (4) a smooth surface.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of the structure of a V-ribbed belt cutting machine, the V-ribbed belt cutting machine includes fixed bolster 1, fixed bolster 1 has base and two sides, the one end of backing roll 2 is installed on a side of fixed bolster 1, the other end suspension, be convenient for overlap rubber sleeve 5 above, tensioning roller 6, deflector roll 8 and backing roll 2 axis parallel arrangement, tensioning roller 6 is close to the one end and the overspeed device tensioner 4 connection of backing roll stiff end, the other end is suspended with the same mode of backing roll 2, be convenient for adorn rubber sleeve 5. The tensioning device 4 is movably connected to the fixed support 1, the movement of the tensioning device 4 can be a rotary movement, and the rotating mechanism drives the tensioning roller 6 to move along the direction vertical to the axis of the supporting roller. In operation, the tensioning device 4 drives the tensioning roller 6 to be far away from the supporting roller along the direction perpendicular to the axis of the supporting roller, so as to tension the rubber sleeve 5, and the tensioning roller can rotate relative to the tensioning device 4 to drive the rubber sleeve to rotate so as to facilitate cutting.

The cutter cuts along the bottom of the wedge on the rubber sleeve 5, the cutter can be manual or automatic, the multi-wedge belt cutting machine with the automatic cutter further comprises a sliding rail 11 and a cutter rest 13 sliding left and right along the sliding rail 11, the sliding rail 11 and the supporting roller 2 are arranged in parallel, and the cutting knife is fixedly installed on the other side face of the fixed support 1. In order to improve the motion stability of the tool rest 13, two slide rails 11 are arranged up and down along the tool rest 13. A screw rod 12 is arranged parallel to the slide rail 11, a slide block matched with the screw rod 12 is arranged in the tool rest 13, and the tool rest 13 is driven to move left and right along the slide rail 11 by the rotation of the screw rod 12. The screw 12 is connected with a motor, and the motor drives the screw to rotate. The motor is connected to a PLC controller (not shown) which controls the operation of the motor. The cutter 3 is rotatably arranged on the cutter rest 13, the cutter moves along the axis vertical to the support roller 2 during cutting, and the cutter 3 moves to the rubber sleeve 1 to divide the rubber sleeve 1. The cutter 3 can be composed of more than one parallel blade, the width of the interval between the blade and the big blade is set according to the width of the V-ribbed belt 7, a plurality of V-ribbed belts 7 can be cut at one time, and the cutting efficiency of the V-ribbed belts 7 is improved.

The driving device 9 is fixed on the fixed support 1 in a movable mode, the guide roller 8 is connected with the driving device 9 and driven by the driving device 9 to move along the direction vertical to the axis of the supporting roller 2, and when the device works, the driving device 9 forces the guide roller 8 to move towards the supporting roller 2 to be matched with the supporting roller 2 to press the rubber sleeve 5 to prevent the rubber sleeve 5 from moving. The driving device 9 can adopt a telescopic structure, such as a telescopic cylinder or a telescopic slide rod to realize the separation or movement of the guide roller 8 to the supporting roller 2. The outer circumference of the guide roller 8 is provided with teeth 16 formed by alternate bulges and grooves, and because the outer surface of the rubber sleeve 1 of the die pressing poly-wedge belt is provided with alternately arranged wedges and wedge grooves, the bulges on the guide roller 8 are matched with the wedge grooves on the rubber sleeve 1 and the grooves on the guide roller 8 are matched with the wedges on the rubber sleeve 1, a certain guiding and fixing function is realized on the rotation of the rubber sleeve 1, and the rubber sleeve 1 is prevented from moving left and right when rotating.

The outer circumference of the guide roller 8 is also provided with smooth surfaces 17 without teeth 16, the smooth surfaces 17 and the teeth 16 are alternately distributed along the axis of the guide roller 8, that is, the teeth 16 on the guide roller 8 are not completely covered on the whole outer surface of the guide roller, but are distributed along the axis of the guide roller 8 in sections. If the teeth 16 can be arranged in four sections according to the length of the shaft, the teeth occupy half of the total length of the guide roller 8, but not limited to the length, and the width and the interval size of the teeth 16 on the guide rollers with different lengths can be adjusted according to specific situations.

The teeth 16 of the guide roller 8 are arranged in a sectional mode, each section of the teeth 16 is enough to ensure that the rubber sleeve 1 can be well fixed during rotation, and then the corresponding area of each section of the teeth is cut, because the displacement of the section of the rubber sleeve is not enough to be accumulated to cause the rubber sleeve to move. After the cutting of the first section tooth part is finished, because a smooth structure is arranged between the first section and the second section, in the rotating process of the rubber sleeve, the displacement caused by the first part of teeth can be offset or released due to the meshing rotation of the rubber sleeve and the second part of teeth, so that the problem that the precision of a wedge on the rubber sleeve and the precision of a tooth 16 on the guide roller 8 have certain difference is avoided, when the tooth 16 on the guide roller 8 is matched with the wedge on the rubber sleeve 5, the guide roller 8 and the rubber sleeve can form tiny displacement due to the size difference between the guide roller 8 and the rubber sleeve, each meshing can bring tiny displacement, and when the meshed teeth are enough, the accumulated displacement causes the movement of the rubber sleeve on the guide roller 8 to generate the tooth jumping phenomenon. The scrappage of the V-ribbed belt 7 caused by multi-wedge, few-wedge or half-wedge generated in the cutting process is reduced.

Because the other end suspension of backing roll 2, gum cover 1 is in rotatory in-process, probably cause the slope a little of backing roll 2 because the atress is uneven, on the one hand, the stiff end atress of backing roll is too big, on the other hand long-term the use probably causes backing roll 2 to warp and makes the gum cover unable to aim at, preferably can set up supporting mechanism 10 at the other end of backing roll 2, supporting mechanism 10 movable fixes to fixed bolster 1 and the other end of optional support backing roll 2, supporting mechanism 10 can adopt slide mechanism, if remove about along fixed bolster 1, or for fixed bolster 1 concertina movement, put gum cover in-process supporting mechanism 10 and drive by slide mechanism and keep away from backing roll 2, slide mechanism slides to the other end that is used for supporting the one end of this suspension with backing roll matched with when cutting operation.

Optionally, the other end of the tension roller 6 may also be provided with a tension support 14 for selectively supporting one end of the tension roller 6 in suspension, the tension support may be moved in the same manner as the support mechanism 10 of the support roller, and may be of a sliding type or a telescopic type, for example, the sliding type may also be provided on the same sliding mechanism 15 as the support mechanism 10, the sliding mechanism 15 drives the tension support 14 and the support mechanism 10 to move towards the suspension end of the support roller 2 and the tension roller 6 when the v-ribbed belt cutting machine operates, and the support supports one end in suspension, and the cutting may rotate relative to the support mechanism 10 and the tension support 14. Other alternatives are of course possible, such as a telescopic structure with the tensioning mechanism 14 being driven by a pneumatic cylinder, for support when extended and for disengagement when retracted, without limitation.

In order to prevent the supporting roller 6 from damaging the cutter 3, the outer surface of the supporting roller 6 is coated with rubber.

Optionally, the v-ribbed belt cutting machine further comprises a protection device arranged outside the v-ribbed belt cutting machine, if the protection device is arranged on a door in the personnel entering direction, the door is in a closed state when cutting is performed, personnel are prevented from entering the door to cause injury, and the v-ribbed belt cutting machine is opened after cutting is stopped, so that the v-ribbed belt can be taken out conveniently and a new rubber sleeve can be assembled conveniently.

FIG. 3 shows a statistical table of the rejection rate of the V-ribbed belt, the number of cuts is the total number of the strips cut in 1 month, and half wedges are the situation that half wedges cross the wedge part during cutting; the

abscissa

1, 2, 3, 4, 5 corresponds to the statistics of data obtained in the past 5 months using a conventional cutting machine; a. and b, c and d are data statistics of about 4 weeks after the cutting machine is adopted, and it can be seen that the rejection rate of the V-ribbed belt after the new cutting machine is adopted is reduced from 0.03% or 0.02% to 0.01% or 0 at present, so that the rejection rate of the V-ribbed belt is greatly reduced.

The left, right, upper, lower, etc. representations presented herein are intended to be illustrative of the placement in the figures and are not intended to be limiting.

Claims

1. The poly V-belt cutting machine comprises a fixed bracket (1), a supporting roller (2), a guide roller (8) and a cutter (3), the device is characterized by further comprising a tension roller (6), one end of the supporting roller (2) is installed on the fixed support (1), the guide roller (8), the tension roller (6) and the supporting roller (2) are axially arranged in parallel, and the driving device (9) and the tensioning device (4) which are installed on the fixed support and move relative to the fixed support are connected with the guide roller (8), the guide roller (8) is driven to move along the direction vertical to the axis of the supporting roller (2), the tensioning device (4) is connected with one end of the tension roller (6), the tension roller (6) is driven to move along the direction vertical to the axis of the supporting roller (2), and the tensioning roller (6) can rotate relative to the tensioning device (4), and teeth (16) which are distributed along the axis of the guide roller (8) in a segmented manner are arranged on the outer circumferential surface of the guide roller (8).

2. The v-ribbed belt cutting machine according to claim 1, characterized in that it further comprises a slide (11) mounted on the fixed support (1) along an axis parallel to the support rollers (2) and a blade carrier (13) movable along the slide (11), said cutting blade (3) being rotatably fixed on the blade carrier (13) and movable in a direction perpendicular to the axis of the support rollers (2).

3. The v-ribbed belt cutting machine according to claim 2, further comprising a screw rod (12) arranged on the fixed support (1) and parallel to the slide rail (11), and a slide block positioned in the tool rest (13), wherein the screw rod (12) is connected with a motor, and the motor drives the screw rod (12) to rotate so as to drive the tool rest (13) to move along the slide rail (11).

4. The v-ribbed belt cutting machine according to claim 3, characterized in that said cutter (3) is more than one cutter (3) arranged side by side and spaced apart.

5. The v-ribbed belt cutting machine according to claim 1, characterized in that it further comprises a support mechanism (10), said support mechanism (10) selectively supporting the other end of the support roller (2).

6. The v-ribbed belt cutting machine according to claim 5, characterized in that said supporting means (10) are of telescopic construction.

7. The v-ribbed belt cutting machine according to claim 5, characterized in that said supporting mechanism (10) is a sliding mechanism.

8. V-ribbed belt cutter according to claim 1, characterized in that said supporting rollers (2) have a rubber-covered surface.

9. The v-ribbed belt cutting machine according to claim 1, characterized in that said tensioning device (4) is a rotary mechanism which rotates the tensioning roller (6) in a direction perpendicular to the axis of the support roller (2).

10. The v-ribbed belt cutter according to claim 1, further comprising a tensioning support (14), said tensioning support (14) selectively supporting the other end of the tensioning roller (6).

11. The v-ribbed belt cutting machine according to claim 1, characterized in that said drive means (9) are of telescopic construction.

12. The v-ribbed belt cutting machine according to claim 1, further comprising a door of the guard, said door being closed when cutting and opened after cutting has stopped.