CN111976180A - All-steel three-drum rotary-drawing turn-up tire side pressing method and device - Google Patents
All-steel three-drum rotary-drawing turn-up tire side pressing method and device Download PDFInfo
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- CN111976180A CN111976180A CN202010625358.9A CN202010625358A CN111976180A CN 111976180 A CN111976180 A CN 111976180A CN 202010625358 A CN202010625358 A CN 202010625358A CN 111976180 A CN111976180 A CN 111976180A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
- B29D2030/3221—Folding over means, e.g. bladders or rigid arms
- B29D2030/3257—Folding over means, e.g. bladders or rigid arms using pressing rollers
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Abstract
An all-steel three-drum rotary-drawing turn-up tire side pressing method and device belong to the technical field of automobile tires. When a tire blank is formed, simultaneously performing a crown pressing process and a process of pressing filling rubber to an inverted sidewall pressing process; when the tire crown is pressed, the tire tread central pressing roller rolls the tire crown central part for not less than 3 circles and then returns; the two tread compression rollers roll the tire crown, swing to the position below the tire crown shoulder when running to the edge position of the tire crown shoulder, roll the tire crown shoulder and the position below the shoulder, and return after stitching from the position below the tire crown shoulder to the edge of the tire crown; pressing the filling rubber while pressing the tire crown, extending the reverse wrapping roller to the position of the filling rubber close to the root part of the filling rubber, pressing the filling rubber to the edge part of the filling rubber, and returning after finishing pressing; inflating and exhausting the turn-up capsule; and rolling the tire side by the turnup roller, pressing the tire side from the root of the tire bead to the edge of the tire side by the turnup roller, pulling the tire side to be turned over on the tire blank and performing tire side pressing, and returning after the pressing is finished. The invention greatly reduces the single cycle time, improves the product quality and ensures the uniformity of the finished product.
Description
Technical Field
The invention belongs to the technical field of tire component production, and particularly relates to an all-steel three-drum rotary-drawing turn-up tire side pressing method and device.
Background
Tires are indispensable components for vehicles such as cars and trucks, and the performance of these vehicles is closely related to the characteristics of the tires. The formation of the green tire is a key process in the production process of the tire.
The current traditional three-drum forming machine green tire forming process is as follows: 1. when the width position of the forming drum is leveled, the tire cylinder is transferred to the forming drum; 2. the locking block supports the capsule for pre-inflation; 3. transferring the tire crown to a molding drum position, inflating the tire cylinder to enable the molding drum to contract to an over-molding position, finishing tire cylinder tire crown compounding, and pressing filling rubber to finish micro-inflation of the capsule; 5. pressing the tire crown; 6. the turn-up capsule and the boosting capsule are inflated to complete the turn-up of the tire side; 7. turning up the capsule to help push the capsule to exhaust; 8. pressing the tire side; 9. and (6) tire unloading. The tire side turn-up and stitching process is an important step for finishing the manufacture of a tire blank, the current process is carried out one by one according to the steps, the inflation and the exhaust of the capsules are used for realizing the turn-up of the tire side, however, the time consumed in the process accounts for nearly 20 percent of the whole process, the influence on the production efficiency is large, in addition, the tire side turn-up is carried out synchronously by using the equipment and the process method, the problems of uneven distribution of a ring part and a side part material and the like exist when the tire side turn-up is carried out by stitching and filling rubber, the occurrence rate of abnormity (such as bubbles, thin lines and the like) in the process is high, therefore, the development and the application significance of the novel all-steel three-.
Disclosure of Invention
Aiming at the technical problems, the invention provides an all-steel three-drum rotary-drawing turn-up tire side pressing method and device in order to improve the all-steel three-drum forming efficiency, improve the product quality, ensure the production continuity and reduce the abnormity in the process of using the traditional technical method.
The purpose of the invention is realized by the following technical scheme:
the invention relates to an all-steel three-drum rotary-drawing turn-up tire side pressing method, which comprises the steps of placing a tire blank on a forming drum, and rotating at a high speed of 800-; simultaneously performing a crown pressing process and a process of pressing filling rubber to an inverted sidewall;
the crown pressing process comprises the following steps:
(1) rolling the central part of the tire crown by a tire tread central pressing roller for not less than 3 circles and then returning;
(2) controlling two tread compression rollers to roll the tire crown, starting to run to two sides from the distance between the end surfaces of the tread compression rollers of 20-35mm, and rolling to the shoulder of the tire crown;
(3) when the two tread press rollers run to the edge positions of the tire crown shoulders, the two tread press rollers start to swing downwards to the tire crown shoulders, the two tread press rollers swing inwards relatively, the swing angle relative to the end faces of the tread press rollers is 20-25 degrees, the tire crown shoulders and the shoulders are rolled, and the tread shoulder press rollers return to the original positions after the tire blanks rotate for at least 20 circles in a pressing mode;
(4) the tread compression roller is continuously pressed from the position below the tread shoulder to the edge of the tread, and returns after the tread is pressed;
the process for pressing the filling adhesive to the turnup sidewall comprises the following steps:
(S1) filling glue pressing: when the crown is pressed, the turn-up roller extends to the position of the filling rubber close to the root of the filling rubber, the pressing is carried out from the position of the filling rubber close to the root to the edge of the filling rubber, and the step returns after the pressing is finished;
(S2) after the filling glue is pressed, inflating the turn-up bladder to support the sidewall for 5-15S;
(S3) the turn-up bladder supports the sidewall to reach half height of the tire blank, and the turn-up bladder exhausts air;
(S4) after the air exhaust of the turn-up bladder is finished, the turn-up roller rolls the tire side, the turn-up roller rotates 80-90 degrees along the axis relative to the main axis of the forming drum, extends to the lower part of the tire side, rotates to 20-25 degrees along the axis of the turn-up roller relative to the main axis of the forming drum, presses the tire side from the tire bead root position of the tire blank to the edge position of the tire side, pulls the tire side to turn up on the tire blank and presses the tire side, and returns after the air exhaust is finished.
Preferably, in the step (3) of the tread band pressing process, the tread band shoulder pressing roller and the tread band auxiliary pressing roller simultaneously roll the tread band shoulder.
Preferably, in the step (2) of the tread band pressing process, the axial distance between the two tread band pressing rollers 31 when the tread band is rolled is smaller than the width of the tread band central pressing roller.
The device adopting the all-steel three-drum rotary-drawing turn-up tire side pressing method comprises a frame, and a tire tread center pressing roller mechanism, a tire tread shoulder pressing roller mechanism, a tire tread pressing roller mechanism, a turn-up roller mechanism and a tire tread auxiliary pressing roller mechanism which are arranged on the frame;
the frame is of a rectangular frame structure, and the two anti-wrapping rollers on the anti-wrapping roller mechanism are symmetrically arranged in the middle of the frame and correspond to the ring part on the green tire side;
the tread press roller mechanism is arranged on a support frame at the top of the frame, and two tread press rollers on the tread press roller mechanism correspond to the tire crown part of the tire blank and are used for rolling the tire crown during inflation;
the tread shoulder pressing roller mechanism 2 is arranged at the end part of the support frame extending out of the frame, and two tread shoulder pressing rollers on the tread shoulder pressing roller mechanism correspond to the tire crown shoulder positions of the tire blank and are used for rolling the tire crown shoulders; a tread center compression roller mechanism is arranged on a base of the tread shoulder compression roller mechanism, and a tread center compression roller of the tread center compression roller mechanism corresponds to the central part of the tire crown of the tire blank and is used for rolling the central part of the tire crown;
the driving components of the turn-up roller mechanism, the tread compression roller mechanism, the tread shoulder compression roller mechanism and the tread center compression roller mechanism are respectively connected with a PLC, and the PLC controls the mechanisms to roll each part of the tire blank so as to realize the rotary-drawing turn-up of the tire.
Preferably, the anti-package roller mechanism comprises an anti-package roller servo motor I, a screw nut transmission set, a stretching carriage, an anti-package roller swing mechanism and an anti-package roller, the anti-package roller servo motor I is connected with a screw, a nut matched with the screw is connected on the stretching carriage to drive the stretching carriage to move along the screw, the anti-package roller swing mechanism is fixed on the stretching carriage and moves along with the stretching carriage, the anti-package roller swing mechanism comprises an anti-package roller servo motor II, a spline shaft and two swing mechanisms, the anti-package roller servo motor II is connected with the spline shaft through chain transmission, each swing mechanism comprises a bevel gear transmission set, a universal transmission shaft, a worm gear mechanism, a swing vertical shaft and an anti-package roller cylinder, one bevel gear of the bevel gear transmission sets of the two swing mechanisms is symmetrically arranged at two ends of the spline shaft, the other bevel gear of the bevel gear transmission set is connected with a worm through the universal transmission shaft, the worm wheel driven by the worm is connected with a swinging vertical shaft which is connected with the end part of the extending sliding frame, the cylinder shell of the turn-up roll is sleeved on the swinging vertical shaft extending into the sliding frame, and the piston end of the turn-up roll cylinder is connected with the turn-up roll.
Preferably, tread center compression roller mechanism 1 includes that tread center compression roller, tread center compression roller stretch into cylinder, linking arm and mounting bracket, tread center compression roller stretches into the cylinder and fixes on tread center compression roller base of tread shoulder compression roller mechanism through the mounting bracket, tread center compression roller stretches into the piston end of cylinder and passes through linking arm connection tread center compression roller, the apex angle end of linking arm is fixed on tread center compression roller base, and tread center compression roller base motion of tread shoulder compression roller mechanism drives tread center compression roller and stretches into the piston of cylinder flexible, realizes stretching into and returning of tread center compression roller.
Preferably, the tread shoulder compression roller mechanism comprises tread shoulder compression rollers, a tread shoulder compression roller base, a mounting sleeve and a tread shoulder compression roller extending cylinder, the cylinder body of the tread shoulder compression roller extending cylinder is connected to the support frame through the mounting sleeve, the piston end of the tread shoulder compression roller extending cylinder is connected with a mounting lead screw of the tread shoulder compression roller through the tread shoulder compression roller base, the two tread shoulder compression rollers are symmetrically mounted on the mounting lead screw, and the tread shoulder compression rollers are driven to move by controlling the extension and retraction of the tread shoulder compression rollers extending into the cylinder, so that the tread shoulder compression rollers can extend into and return.
Preferably, the tread pressing roller mechanism comprises a tread pressing roller, a moving frame, a tread pressing roller telescoping mechanism and a tread pressing roller opening and closing and swinging mechanism, the moving frame is connected with the support frame in a sliding mode through the tread pressing roller telescoping mechanism, the tread pressing roller opening and closing and swinging mechanism is arranged on the moving frame, and the two tread pressing rollers are connected to two tread pressing roller air cylinder pistons of the tread pressing roller opening and closing and swinging mechanism respectively.
Preferably, the tread compression roller opening and closing swing mechanism comprises a tread compression roller servo motor I, a tread compression roller servo motor II, two symmetrically arranged tread compression roller cylinders, linear slide rails I axially arranged along the tread compression roller cylinders, two parallel linear slide rails II, a tread compression roller screw I parallel to the linear slide rails II, and a tread compression roller screw II, wherein two parallel linear slide rails II perpendicular to the tread compression roller extending screw are fixed on the moving frame, two slide blocks II are symmetrically arranged on each linear slide rail II, two cylinder bases are symmetrically arranged on two sides of each linear slide rail II and are respectively connected with the slide blocks II on each linear slide rail II, the tread compression roller screw I and the tread compression roller screw II are arranged between the two linear slide rails II in parallel and are matched with nuts and respectively connected to the cylinder bases on the two sides, the tread compression roller screw I and the tread compression roller screw II are respectively connected with the tread compression roller servo motor I and the tread compression roller servo motor II, linear slide rail I fixes on the cylinder base, connects on the compression roller support rather than complex slider, and the piston end of two tread compression roller cylinders all is connected with the tread compression roller.
Preferably, a tread auxiliary compression roller mechanism is further arranged below the reverse-wrapping roller mechanism at the middle part of the bottom of the frame and comprises a tread auxiliary compression roller cylinder, a tread auxiliary compression roller base, an adjusting screw rod, an adjusting handle and two tread auxiliary compression rollers, the tread auxiliary compression roller cylinder is arranged at the bottom of the frame, the piston end of the tread auxiliary compression roller cylinder is connected with the tread auxiliary compression roller base 53, the adjusting screw rod is arranged on the tread auxiliary compression roller base, the adjusting screw rod is connected with two symmetrical tread auxiliary compression rollers, the adjusting handle is arranged at the end part of the adjusting screw rod, extending out of the tread auxiliary compression roller base 53, and the tread auxiliary compression roller cylinder is driven to drive the tread auxiliary compression roller to; the adjusting screw is provided with double threads, the two tread auxiliary compression rollers are installed at two ends of the adjusting screw, the positions of the tire crown shoulders of the tire blanks corresponding to the two tread auxiliary compression rollers are adjusted through the adjusting handle, and the tire crown shoulders are simultaneously rolled by the tread shoulder compression rollers during working.
The invention has the beneficial effects that:
1. by adopting the all-steel three-drum rotary-drawing turn-up tire side pressing method, the single cycle time is greatly reduced, and the efficiency is improved. The air inflation of the capsule is reduced, compressed air is saved, and the loss cost of the capsule is reduced. The product quality is improved, and the uniformity of the finished product is ensured.
2. By adopting the all-steel three-drum rotary-pulling turn-up tire side pressing device, the rotary-pulling turn-up tire side pressing is realized through the matching action of all the mechanisms, and all the mechanisms work independently without interfering with each other, so that the control is accurate, and the process flow is saved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
FIG. 2 is a schematic diagram of the apparatus of the present invention.
Fig. 3 is a left side view of fig. 2.
Fig. 4 is a top view of fig. 2.
Fig. 5 is a schematic perspective view of fig. 2.
In the figure: 1. the tire tread center pressing roller mechanism comprises a tire tread center pressing roller mechanism 11, a tire tread center pressing roller mechanism 12, a connecting arm 13, a mounting frame 14 and a tire tread center pressing roller extending into an air cylinder;
2. the tire tread shoulder pressing roller mechanism comprises a tire tread shoulder pressing roller mechanism 21, a tire tread shoulder pressing roller 22, a base 23, a tire tread shoulder pressing roller extending into an air cylinder 24, an installation sleeve 25 and a manual adjusting button 25;
3. the tire tread compression roller mechanism comprises a tire tread compression roller mechanism 301, a tire tread compression roller 302, a compression roller support 303, a tire tread compression roller extending lead screw 304, a tire tread compression roller lead screw I305, a tire tread compression roller lead screw II 306, a tire tread compression roller cylinder 306, an air cylinder base 307, a tire tread compression roller servo motor I308, a tire tread compression roller servo motor 309, a movable frame 310, a guide sleeve 311, a tire tread compression roller servo motor II 312, a linear slide rail I313, a slide block I314, a tire tread compression roller servo motor
III, 315, a screw rod nut, 316, a sliding block II, 317 and a linear sliding rail II;
4. the device comprises a turning roll mechanism, a turning roll servo motor I, a spline shaft, a bevel gear transmission set, a universal transmission shaft 404, a worm gear mechanism 405, a swinging vertical shaft 406, a turning roll 407, a turning roll 408, an extending sliding frame 409, a turning roll servo motor II, a screw rod and nut transmission set 410, a turning roll cylinder 411 and a turning roll driving mechanism, wherein the turning roll servo motor I is connected with the screw rod and nut transmission set through a screw rod;
5. the tire tread auxiliary compression roller mechanism comprises a tire tread auxiliary compression roller mechanism 51, a tire tread auxiliary compression roller cylinder 52, a tire tread auxiliary compression roller 53, a compression roller base 54, an adjusting handle 55 and an adjusting screw rod;
6. and 7, a frame and a support frame.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1: as shown in figure 1, the invention relates to an all-steel three-drum rotary-drawing turn-up sidewall pressing method, which is characterized in that: placing the green tire on a forming drum, and rotating at a high speed of 800-; simultaneously performing a crown pressing process and a process of pressing filling rubber to an inverted sidewall;
the crown pressing process comprises the following steps:
(1) rolling the central part of the tire crown by the tire tread central pressing roller 11 for not less than 3 circles and then returning;
(2) controlling two tread rollers 31 to roll the tire crown, starting to run to two sides from the distance between the end faces of the tread rollers (namely the center of the tire crown) of 20-35mm, and rolling to the shoulder of the tire crown;
(3) when the two tread press rollers run to the edge positions of the tire crown shoulders, the two tread press rollers start to swing downwards to the tire crown shoulders, the two tread press rollers swing inwards relatively, the swing angle relative to the end faces of the tread press rollers is 20-25 degrees, the tire crown shoulders and the shoulders are rolled, and meanwhile, the tread shoulder press rollers 21 return to the original positions after not less than 20 turns of tire blank rotation in a pressing mode;
(4) the tread press roller 301 continues to be pressed from the lower part of the tread shoulder to the edge of the tread, and returns after the tread is pressed;
the process for pressing the filling adhesive to the turnup sidewall comprises the following steps:
(S1) filling glue pressing: when the crown is pressed, the turn-up roller extends to the position of the filling rubber close to the root of the filling rubber, the pressing is carried out from the position of the filling rubber close to the root to the edge of the filling rubber, and the step returns after the pressing is finished;
(S2) after the filling glue is pressed, inflating the turn-up bladder to support the sidewall for 5-15S;
(S3) the turn-up bladder supports the sidewall to reach half height of the tire blank, and the turn-up bladder exhausts air;
(S4) after the air exhaust of the turn-up bladder is finished, the turn-up roller rolls the tire side, the turn-up roller rotates 80-90 degrees along the axis relative to the main axis of the forming drum, extends to the lower part of the tire side, rotates to 20-25 degrees along the axis of the turn-up roller relative to the main axis of the forming drum, presses the tire side from the tire bead root position of the tire blank to the edge position of the tire side, pulls the tire side to turn up on the tire blank and presses the tire side, and returns after the air exhaust is finished.
When the tread material is thicker and harder, in the step (3) of the tread pressing process, the tread shoulder pressing roller 21 and the tread auxiliary pressing roller 52 simultaneously roll the tread shoulder.
In the step (2) of the tire tread pressing process, the axial distance between the two tire tread press rollers 31 when the tire tread is rolled initially is smaller than the width of the tire tread center press roller, so that pressure leakage is avoided.
In the whole process, the tire side pressing is finished later than the tire crown pressing. The pressing pressure of each cylinder is 0.1-0.6 MPa.
The device for realizing the all-steel three-drum rotary-drawing turn-up sidewall pressing method comprises a frame, and a tread center pressing roller mechanism 1, a tread shoulder pressing roller mechanism 2, a tread pressing roller mechanism 3, a turn-up roller mechanism 4 and a tread auxiliary pressing roller mechanism 5 which are arranged on the frame;
the frame 6 is of a rectangular frame structure, and the turn-up rollers 407 on the turn-up roller mechanism 4 are arranged in two groups, symmetrically arranged in the middle of the frame 6 and corresponding to the ring part on the green tire side;
the tread compression roller mechanism 3 is arranged on a support frame 7 at the top of the frame 6, the support frame 7 is used for supporting the tread compression roller mechanism 3, the tread shoulder compression roller mechanism 2 and the tread center compression roller mechanism 1, and two tread compression rollers 31 on the tread compression roller mechanism correspond to the tire crown part of the tire blank and are used for rolling the tire crown during inflation;
the tread shoulder pressing roller mechanism 2 is arranged at the end part of the support frame 7 extending out of the frame 6, and two tread shoulder pressing rollers 21 on the tread shoulder pressing roller mechanism correspond to the tire blank crown shoulder positions and are used for rolling the tire crown shoulders; a tread central pressing roller mechanism 1 is arranged on a base 22 of the tread shoulder pressing roller mechanism 2, and a tread central pressing roller 11 of the tread central pressing roller mechanism 1 corresponds to the central part of the tire crown of the tire blank and is used for rolling the central part of the tire crown;
the driving components of the turn-up roller mechanism 4, the tread compression roller mechanism 3, the tread shoulder compression roller mechanism 2 and the tread center compression roller mechanism 1 are respectively connected with a PLC, and the PLC controls the mechanisms to roll each part of the tire blank so as to realize the spin-up turn-up of the tire.
The turn-up roll mechanism 4 comprises a turn-up roll servo motor I401, a lead screw nut transmission set 410, a stretching carriage 408, a turn-up roll swinging mechanism and a turn-up roll 407, wherein the turn-up roll servo motor I401 is connected with a lead screw, a nut matched with the lead screw is connected on the stretching carriage 408 to drive the stretching carriage 408 to move along the lead screw, the turn-up roll swinging mechanism is fixed on the stretching carriage 408 and moves along with the stretching carriage, the turn-up roll swinging mechanism comprises a turn-up roll servo motor II 409, a spline shaft 402 and two swinging mechanisms, the turn-up roll servo motor II is connected with the spline shaft 402 through chain transmission, each swinging mechanism comprises a bevel gear transmission set 403, a universal transmission shaft 404, a worm gear mechanism 405, a swinging vertical shaft 406 and a turn-up roll cylinder 411, one bevel gear of the bevel gear transmission set 403 of the two swinging mechanisms is symmetrically arranged at two ends of the spline shaft 402, and the other bevel gear of the bevel gear transmission set is connected with the universal transmission shaft 404, the worm wheel driven by the worm is connected with a swinging vertical shaft 406, the swinging vertical shaft 406 is connected with the end part of the extending sliding frame 408, the shell of the turn-up roller cylinder 411 is sleeved on the swinging vertical shaft 406 extending into the sliding frame 408, and the piston end of the turn-up roller cylinder 411 is connected with the turn-up roller 407.
The working process is as follows:
the servo motor I401 is arranged on the frame 6, a lead screw of a lead screw nut transmission set 410 is connected with an output shaft of the servo motor I401 through belt transmission, the lead screw is driven to rotate through the servo motor I401 to drive a nut matched with the lead screw and an extending sliding frame 408 to move along the lead screw, so that a turn-up roll swinging mechanism fixed on the extending sliding frame 408 is driven to extend and retract along the radial direction of a green tire, a servo motor II 409 of the turn-up roll swinging mechanism is arranged on the frame 6, the output shaft of the servo motor II is connected with a spline shaft 402 through chain transmission, the spline shaft 402 and a universal transmission shaft 404 are arranged vertically relatively, the transmission direction is changed through bevel gear transmission on a bevel gear transmission set 403 respectively arranged on the spline shaft 402 and the universal transmission shaft 404, power is transmitted to a worm of a worm gear mechanism 405 connected with the servo motor, power is transmitted to a swinging vertical shaft 406 through a turbine matched with, the upper air cylinder 411 and the turn-up roller 407 are driven to swing, and the piston of the air cylinder 411 is controlled to stretch and retract to realize the axial extension and retraction of the turn-up roller 407 along the air cylinder 411.
As shown in fig. 3 and 4, the tread center pressing roller mechanism 1 includes a tread center pressing roller 11, a tread center pressing roller extending cylinder 14, a connecting arm 12 and a mounting frame 13, the tread center pressing roller extending cylinder 14 is fixed on a tread center pressing roller base 22 of the tread shoulder pressing roller mechanism through the mounting frame, a piston end of the tread center pressing roller extending cylinder 14 is connected with the tread center pressing roller 11 through the connecting arm 12, a vertex end of the connecting arm 12 is fixed on the tread center pressing roller base 22, and the tread center pressing roller base 22 of the tread shoulder pressing roller mechanism moves to drive the piston of the tread center pressing roller extending cylinder 14 to stretch and retract, so that the tread center pressing roller 11 extends and returns.
As shown in fig. 3 and 4, the tread shoulder pressing roller mechanism 2 includes a tread shoulder pressing roller 21, a tread shoulder pressing roller base 22, a mounting sleeve 24 and a tread shoulder pressing roller extending cylinder 23, the cylinder body of the tread shoulder pressing roller extending cylinder 23 is connected to the support frame 7 through the mounting sleeve 24, the piston end of the tread shoulder pressing roller extending cylinder 23 is connected to the mounting screw of the tread shoulder pressing roller 21 through the tread shoulder pressing roller base 22, two tread shoulder pressing rollers 21 are symmetrically mounted on the mounting screw, and the tread shoulder pressing rollers 21 are driven to move by controlling the extension and retraction of the tread shoulder pressing rollers extending into the cylinder 23, so as to achieve the extension and the return.
The installation lead screw is double thread lead screw, installs on tread shoulder compression roller base 22, and the one end that stretches out tread shoulder compression roller base 22 installs manual adjusting knob 25, through adjusting two tread shoulder compression rollers 21 widths are adjusted to manual adjusting knob 25, satisfy the user demand.
The tread pressing roller mechanism 3 comprises two tread pressing rollers 301, a moving frame 309, a tread pressing roller telescopic mechanism and a tread pressing roller opening and closing and swinging mechanism, wherein the moving frame 309 is connected with the support frame 7 in a sliding mode through the tread pressing roller telescopic mechanism, the tread pressing roller opening and closing and swinging mechanism is arranged on the moving frame 309, and the two tread pressing rollers 301 are connected to the pistons of the two tread pressing roller air cylinders 306 of the tread pressing roller opening and closing and swinging mechanism respectively.
The tread compression roller telescoping mechanism comprises tread compression roller servo motors III 314, guide shafts, guide sleeves 310 and a screw nut 315, the tread compression roller servo motors III 314 are connected to the screw nut through chain transmission, the two guide sleeves 310 are symmetrically fixed on the support frame 7, the screw nut is rotatably connected to connecting seats of the two guide sleeves 310 through bearings, the movable frame 309 is provided with the guide shafts sliding along the guide sleeves 310, one end of the tread compression roller matched with the screw nut, extending into the screw 303, is fixed on the movable frame 309, the other end of the tread compression roller is a free end, and the screw and the guide sleeves 310 are arranged in parallel; the moving frame 309 is driven by a tread pressing roller servo motor III 314 to axially extend and retract along the tread pressing roller extending lead screw 303;
the tread compression roller split-combined swing mechanism comprises a tread compression roller servo motor I308, a tread compression roller servo motor II 311, two tread compression roller air cylinders 306 symmetrically arranged, linear slide rails I axially arranged along the tread compression roller air cylinders 306, two linear slide rails II arranged in parallel, a tread compression roller screw I304 parallel to the linear slide rails II, and a tread compression roller screw II 305, wherein two parallel linear slide rails II 317 perpendicular to the tread compression roller extending screw 303 are fixed on the moving frame 309, two sliding blocks II 316 are symmetrically arranged on each linear slide rail II 317, two air cylinder bases 307 are symmetrically arranged on two sides of each linear slide rail II 317 and are respectively connected with the sliding blocks II 316 on each linear slide rail II 317, the tread compression roller screw I304 and the tread compression roller screw II 305 are arranged between the two linear slide rails II in parallel and are matched with the two linear slide rails II, nuts are respectively connected on the air cylinder bases 307 on two sides, tread compression roller lead screw I304, tread compression roller lead screw II 305 connect tread compression roller servo motor I308 and tread compression roller servo motor II 311 respectively, and linear slide rail I312 is two, fixes respectively on two cylinder bases 307, connects on compression roller support 302 rather than complex slider 313, and compression roller support 302 tip and two tread compression roller cylinders 306's piston end all are connected with tread compression roller 301.
During the separation and combination movement, the two servo motors 308 and 311 are controlled to move at a constant speed, and the two cylinder bases 307 move in parallel along the two tread compression roller lead screws I304, the tread compression roller lead screws II 305 and the linear slide rails 312, so that the separation and combination of the two tread compression rollers 301 are realized. When the tread pressing rollers swing, the two servo motors 308 and 311 do differential motion, and the two cylinder bases 307 swing and move, so that the two tread pressing rollers 301 swing and rotate relatively; when the tread is rolled, the piston of the tread pressing roller cylinder 306 is driven to extend out, the pressing roller support 302 is driven to slide along the linear sliding rail I312, and the tread pressing roller 301 is driven to extend in, so that the tread rolling is completed.
When the tread material is thick and hard, a tread auxiliary pressure roller mechanism 5 is further arranged below the reverse-wrapping roller mechanism 4 at the middle part of the bottom of the frame 6 in the embodiment and comprises a tread auxiliary pressure roller cylinder 51, a tread auxiliary pressure roller base 53, an adjusting screw 55, an adjusting handle 54 and two tread auxiliary pressure rollers 52, wherein the tread auxiliary pressure roller cylinder 51 is arranged at the bottom of the frame 6, the piston end of the tread auxiliary pressure roller cylinder is connected with the tread auxiliary pressure roller base 53, the adjusting screw 55 is arranged on the tread auxiliary pressure roller base 53, the adjusting screw 55 is connected with the two symmetrical tread auxiliary pressure rollers 52, the adjusting handle 54 is arranged at the end part of the adjusting screw 55 extending out of the tread auxiliary pressure roller base 53, and the tread auxiliary pressure roller cylinder 51 is driven to drive the tread auxiliary pressure rollers 52 to; the adjusting screw 55 is provided with double threads, the two tread auxiliary pressing rollers 52 are arranged at two ends of the adjusting screw 55, the positions of the crown shoulders of the tire blanks corresponding to the two tread auxiliary pressing rollers 52 are adjusted through the adjusting handle 54, and the tread auxiliary pressing rollers 52 and the tread shoulder pressing rollers 52 roll the crown shoulders simultaneously in work.
The PLC is respectively connected with a tread center compression roller extending cylinder 14, a tread shoulder compression roller extending cylinder 23, a tread compression roller cylinder 306, a tread compression roller servo motor I308, a tread compression roller servo motor II 311, a tread compression roller servo motor III 314, a turn-up roller servo motor I401, a turn-up roller servo motor II 409, a turn-up roller cylinder 411 and a tread auxiliary compression roller cylinder 51, and all parts of the PLC are controlled to move according to the process flow.
Other parts which are not mentioned in the embodiment are all the existing general structures.
In operation of the present invention, as shown in figure 1,
firstly, placing a tire blank on a forming drum, and rotating at a high speed of 800-; simultaneously performing a crown pressing process and a process of pressing filling rubber to an inverted sidewall;
the crown pressing process comprises the following steps:
(1) controlling the tread central pressing roller to stretch into the cylinder 14 to stretch out and draw back, controlling the solenoid valve of the tread central pressing roller to stretch into the cylinder 14 to reverse by the PLC, stretching into the cylinder, driving the tread central pressing roller 11 to roll the central part of the tire crown for not less than 3 circles, and driving the tread central pressing roller 11 to return by the retraction of the piston of the tread central pressing roller stretching into the cylinder 14;
(2) the PLC controls the servo motor 314 to drive the screw nut to rotate, so that the screw nut and the movable frame 309 are driven to extend to reach a specified position, the two tread press rollers 31 roll the tire crown, the distance between the end faces of the tread press rollers (namely the center of the tire crown) is 20-35mm, the tire crown starts to move towards two sides, and the distance is rolled to the shoulder of the tire crown;
(3) controlling the constant-speed motion of the tread pressing roller screw I304 and the tread pressing roller screw II 305, controlling the differential motion of the tread pressing roller screw I304 and the tread pressing roller screw II 305 when the two tread pressing rollers 301 run to the edge position of the tire crown shoulder, starting the two tread pressing rollers 301 to swing downwards to the tire crown shoulder, swinging the two tread pressing rollers 301 inwards relatively, controlling the swinging angle of the end surface of each tread pressing roller 301 to be 20-25 degrees, rolling the tire crown shoulder and the tire shoulder, driving a servo motor 314 of a tread pressing roller telescoping mechanism to act after the tread shoulder pressing rollers 21 are pressed for not less than 20 circles of tire rotation, driving the movable frame 309 and the tread pressing rollers 301 to extend into the tread pressing roller screw 303 to retract axially, and returning to the original position;
(4) controlling the tread compression roller screw I304 and the tread compression roller screw II 305 to do differential motion, driving the tread compression roller 301 to continue pressing from the lower part of the tire crown shoulder to the edge of the tire crown, and returning after the tire crown pressing is finished;
the process for pressing the filling adhesive to the turnup sidewall comprises the following steps:
(S1) filling glue pressing: when the tire crown is pressed, the servo motor I401 is controlled to drive, the stretching sliding frame 408 is driven to move along the lead screw, the reverse wrapping roller 407 stretches into the position, close to the root part, of the filling rubber, the position, close to the root part, of the filling rubber starts to move to the side part of the filling rubber for pressing, and after pressing is completed, the servo motor I401 is controlled to drive, the stretching sliding frame 408 is driven to move along the lead screw, and the reverse wrapping roller 401 returns;
(S2) after the filling glue is pressed, inflating the turn-up bladder to support the sidewall for 5-15S;
(S3) the turn-up bladder supports the sidewall to reach half height of the tire blank, and the turn-up bladder exhausts air;
(S4) after the air exhaust of the turn-up bladder is completed, the servo motor I401 drives to drive the stretching sliding frame 408 to move along the lead screw to drive the turn-up roller 407 to roll the sidewall, the worm gear is driven to drive through the transmission of the servo motor II 409 of the turn-up roller swing mechanism to swing the swing vertical shaft 406, the air cylinder 411 and the turn-up roller 407 are driven to swing 80-90 degrees along the axis relative to the main axis of the forming drum, the air cylinder extends to the lower side of the sidewall, the axis of the turn-up roller swings to 20-25 degrees relative to the main axis of the forming drum, the sidewall is pressed from the root position of the tire bead of the tire blank to the edge position of the sidewall, the sidewall is pulled to be reversely wrapped on the tire blank and the sidewall is pressed, and after the air exhaust is completed, the servo motor I401 drives.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (10)
1. An all-steel three-drum rotary-drawing turn-up tire side pressing method is characterized in that: placing the green tire on a forming drum, and rotating at a high speed of 800-; simultaneously performing a crown pressing process and a process of pressing filling rubber to an inverted sidewall;
the crown pressing process comprises the following steps:
(1) rolling the central part of the tire crown by a tire tread central pressing roller for not less than 3 circles and then returning;
(2) controlling two tread compression rollers to roll the tire crown, starting to run to two sides from the distance between the end surfaces of the tread compression rollers of 20-35mm, and rolling to the shoulder of the tire crown;
(3) when the two tread press rollers run to the edge positions of the tire crown shoulders, the two tread press rollers start to swing downwards to the tire crown shoulders, the two tread press rollers swing inwards relatively, the swing angle relative to the end faces of the tread press rollers is 20-25 degrees, the tire crown shoulders and the shoulders are rolled, and the tread shoulder press rollers return to the original positions after the tire blanks rotate for at least 20 circles in a pressing mode;
(4) the tread compression roller is continuously pressed from the position below the tread shoulder to the edge of the tread, and returns after the tread is pressed;
the process for pressing the filling adhesive to the turnup sidewall comprises the following steps:
(S1) filling glue pressing: when the crown is pressed, the turn-up roller extends to the position of the filling rubber close to the root of the filling rubber, the pressing is carried out from the position of the filling rubber close to the root to the edge of the filling rubber, and the step returns after the pressing is finished;
(S2) after the filling glue is pressed, inflating the turn-up bladder to support the sidewall for 5-15S;
(S3) the turn-up bladder supports the sidewall to reach half height of the tire blank, and the turn-up bladder exhausts air;
(S4) after the air exhaust of the turn-up bladder is finished, the turn-up roller rolls the tire side, the turn-up roller rotates 80-90 degrees along the axis relative to the main axis of the forming drum, extends to the lower part of the tire side, rotates to 20-25 degrees along the axis of the turn-up roller relative to the main axis of the forming drum, presses the tire side from the tire bead root position of the tire blank to the edge position of the tire side, pulls the tire side to turn up on the tire blank and presses the tire side, and returns after the air exhaust is finished.
2. The all-steel three-drum rotary-drawing turn-up sidewall pressing method according to claim 1, characterized in that: in the step (3) of the tire tread pressing process, the tire tread shoulder pressing roller and the tire tread auxiliary pressing roller simultaneously roll the tire tread shoulder.
3. The all-steel three-drum rotary-drawing turn-up sidewall pressing method according to claim 1, characterized in that: in the step (2) of the tire tread pressing process, the axial distance between the two tread press rollers 31 when the tire tread is rolled initially is smaller than the width of the tread center press roller.
4. The apparatus for applying the all-steel three-drum rotary-drawing turn-up sidewall pressing method as claimed in any one of claims 1 to 3, wherein: the tire tread press roll mechanism comprises a frame, and a tire tread center press roll mechanism, a tire tread shoulder press roll mechanism, a tire tread press roll mechanism, a turn-up roll mechanism and a tire tread auxiliary press roll mechanism which are arranged on the frame;
the frame is of a rectangular frame structure, and the two anti-wrapping rollers on the anti-wrapping roller mechanism are symmetrically arranged in the middle of the frame and correspond to the ring part on the green tire side;
the tread press roller mechanism is arranged on a support frame at the top of the frame, and two tread press rollers on the tread press roller mechanism correspond to the tire crown part of the tire blank and are used for rolling the tire crown during inflation;
the tread shoulder pressing roller mechanism 2 is arranged at the end part of the support frame extending out of the frame, and two tread shoulder pressing rollers on the tread shoulder pressing roller mechanism correspond to the tire crown shoulder positions of the tire blank and are used for rolling the tire crown shoulders; a tread center compression roller mechanism is arranged on a base of the tread shoulder compression roller mechanism, and a tread center compression roller of the tread center compression roller mechanism corresponds to the central part of the tire crown of the tire blank and is used for rolling the central part of the tire crown;
the driving components of the turn-up roller mechanism, the tread compression roller mechanism, the tread shoulder compression roller mechanism and the tread center compression roller mechanism are respectively connected with a PLC, and the PLC controls the mechanisms to roll each part of the tire blank so as to realize the rotary-drawing turn-up of the tire.
5. The all-steel three-drum rotary-drawing turn-up device according to claim 4, wherein: the anti-package roller mechanism comprises an anti-package roller servo motor I, a lead screw nut transmission set, a stretching-in sliding frame, an anti-package roller swing mechanism and an anti-package roller, wherein the anti-package roller servo motor I is connected with a lead screw and is connected with the stretching-in sliding frame through a nut matched with the lead screw to drive the stretching-in sliding frame to move along the lead screw, the anti-package roller swing mechanism is fixed on the stretching-in sliding frame and moves along with the stretching-in sliding frame, the anti-package roller swing mechanism comprises an anti-package roller servo motor II, a spline shaft and two swing mechanisms, the anti-package roller servo motor II is connected with the spline shaft through chain transmission, each swing mechanism comprises a bevel gear transmission set, a universal transmission shaft, a turbine worm mechanism, a swing vertical shaft and an anti-package roller cylinder, one bevel gear of the bevel gear transmission sets of the two swing mechanisms is symmetrically arranged at two ends of the spline shaft, the other bevel gear of the bevel gear set is connected with, the swinging vertical shaft is connected to the end part of the extending sliding frame, the cylinder shell of the turn-up roll is sleeved on the swinging vertical shaft extending into the sliding frame, and the piston end of the turn-up roll cylinder is connected with the turn-up roll.
6. The all-steel three-drum rotary-drawing turn-up device according to claim 4, wherein: tread center compression roller mechanism 1 includes that tread center compression roller, tread center compression roller stretch into cylinder, linking arm and mounting bracket, tread center compression roller stretch into the cylinder and pass through the mounting bracket to be fixed on tread center compression roller base of tread shoulder compression roller mechanism, tread center compression roller stretches into the piston end of cylinder and passes through linking arm connection tread center compression roller, the apex angle end of linking arm is fixed on tread center compression roller base, and tread center compression roller base motion of tread shoulder compression roller mechanism drives the tread center compression roller and stretches into the piston of cylinder and stretches out and draws back, realizes stretching into and returning of tread center compression roller.
7. The all-steel three-drum rotary-drawing turn-up device according to claim 4, wherein: the tread shoulder compression roller mechanism comprises tread shoulder compression rollers, a tread shoulder compression roller base, a mounting sleeve and a tread shoulder compression roller extending cylinder, the cylinder body of the tread shoulder compression roller extending cylinder is connected to the support frame through the mounting sleeve, the piston end of the tread shoulder compression roller extending cylinder is connected with a mounting lead screw of the tread shoulder compression roller through the tread shoulder compression roller base, the two tread shoulder compression rollers are symmetrically mounted on the mounting lead screw, and the tread shoulder compression rollers are driven to move by controlling the extension and contraction of the tread shoulder compression rollers extending into the cylinder, so that the tread shoulder compression rollers can extend into and return.
8. The all-steel three-drum rotary-drawing turn-up device according to claim 4, wherein: the tread compression roller mechanism comprises tread compression rollers, a movable frame, a tread compression roller telescopic mechanism and a tread compression roller opening and closing and swinging mechanism, wherein the movable frame is connected with the support frame in a sliding mode through the tread compression roller telescopic mechanism, the tread compression roller opening and closing and swinging mechanism is arranged on the movable frame, and the two tread compression rollers are connected to two tread compression roller air cylinder pistons of the tread compression roller opening and closing and swinging mechanism respectively.
9. The all-steel three-drum rotary-drawing turn-up device according to claim 4, wherein: the tread compression roller split-combined swing mechanism comprises a tread compression roller servo motor I, a tread compression roller servo motor II, two tread compression roller air cylinders symmetrically arranged, linear slide rails I axially arranged along the tread compression roller air cylinders, two linear slide rails II arranged in parallel, a tread compression roller screw I and a tread compression roller screw II parallel to the linear slide rails II, wherein two parallel linear slide rails II perpendicular to the tread compression roller extending screw rods are fixed on the moving frame, two slide blocks II are symmetrically arranged on each linear slide rail II, two air cylinder bases are symmetrically arranged on two sides of each linear slide rail II and are respectively connected with the slide blocks II on each linear slide rail II, the tread compression roller screw I and the tread compression roller screw II are arranged between the two linear slide rails II in parallel and are matched with the linear slide rails II, nuts are respectively connected to the air cylinder bases on the two sides, and the tread compression roller screw I and the tread compression roller screw II are respectively connected with the tread compression roller servo motor I and the tread compression roller servo motor, linear slide rail I is two, fixes respectively on two cylinder bases, connects on the compression roller support rather than complex slider, and the piston end of two tread compression roller cylinders all is connected with the tread compression roller.
10. The all-steel three-drum rotary-drawing turn-up device according to claim 4, wherein: the lower part of the reverse-wrapping roller mechanism at the middle part of the bottom of the frame is also provided with a tread auxiliary compression roller mechanism which comprises a tread auxiliary compression roller cylinder, a tread auxiliary compression roller base, an adjusting screw, an adjusting handle and two tread auxiliary compression rollers, wherein the tread auxiliary compression roller cylinder is arranged at the bottom of the frame, the piston end of the tread auxiliary compression roller cylinder is connected with the tread auxiliary compression roller base 53, the adjusting screw is arranged on the tread auxiliary compression roller base, the adjusting screw is connected with two symmetrical tread auxiliary compression rollers, the end part of the adjusting screw, extending out of the tread auxiliary compression roller base 53, is provided with the adjusting handle, and the tread auxiliary compression roller cylinder is driven to drive the tread auxiliary; the adjusting screw is provided with double threads, the two tread auxiliary compression rollers are installed at two ends of the adjusting screw, the positions of the tire crown shoulders of the tire blanks corresponding to the two tread auxiliary compression rollers are adjusted through the adjusting handle, and the tire crown shoulders are simultaneously rolled by the tread shoulder compression rollers during working.
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| CN202010625358.9A CN111976180A (en) | 2020-07-02 | 2020-07-02 | All-steel three-drum rotary-drawing turn-up tire side pressing method and device |
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| CN202010625358.9A CN111976180A (en) | 2020-07-02 | 2020-07-02 | All-steel three-drum rotary-drawing turn-up tire side pressing method and device |
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Application publication date: 20201124 |