CN111730887A - Tire bead presetting device - Google Patents

Abstract

The invention discloses a tire bead presetting device, which comprises a fixed frame body longitudinally striding above a lathe bed, a sliding plate, a moving arm, an expansion and contraction clamping mechanism and a driving mechanism, wherein the fixed frame body is arranged on the lathe bed; the sliding plate is connected with the fixed frame body in a sliding way; the two moving arms are symmetrically arranged on two sides of the lower end of the sliding plate; the two expansion clamping mechanisms are respectively used for supporting the left tire bead and the right tire bead and are arranged on the outer sides of the two moving arms in a one-to-one correspondence manner; the driving mechanism is used for driving the sliding plate to move longitudinally, so that the two expansion and contraction clamping mechanisms can be coaxially arranged with the left steel ring and the right preset ring respectively. The tire bead transfer ring can be used for tire beads in idle time of operators, takt time is not occupied, the intermediate ring of the tire body cylinder transfer ring can be reserved, and the quality of tires is ensured.

Description

Tire bead presetting device

Technical Field

The invention relates to the field of rubber machinery, in particular to a tire bead presetting device.

Background

In the continuous and continuous development of the expressway and the transportation industry in China, the all-steel truck radial tire forming machine is greatly developed as one of the most important devices for manufacturing all-steel truck radial tires. The equipment used in the market at present is a two-drum, three-drum and four-drum forming machine. The development of the two-drum forming machine is stopped due to low efficiency, and the four-drum forming machine has high efficiency but the price is multiple times of that of the three-drum forming machine. Although the three-drum forming machine breaks through in the aspects of production quality and efficiency at present, compared with a four-drum forming machine, the production efficiency is still to be further improved in the degree of automation compared with a semi-steel forming machine. Therefore, the forming process and the forming equipment of the all-steel radial truck tire must be improved and innovated greatly, and the development of the high-efficiency three-drum forming machine with high production efficiency, good formed tire blank quality, high automation degree and excellent cost performance becomes the urgent need of the current market.

A one-step forming machine for an all-steel-wire truck radial tire for forming a radial tire in rubber industrial machinery mainly comprises the following six parts: the tire-unloading system comprises a molding system, a feeding system, a workpiece-making conveying system, a calibration system, a tire-unloading system and an operating system. The tire bead is an important component of an all-steel radial tire, and one all-steel radial tire comprises a left tire bead and a right tire bead (steel wire ring). On an all-steel radial tire three-drum forming machine, two feeding modes are provided for tire beads of the tire. One of them is that the tire bead preselector is positioned at two sides of the tire body drum, before the composite member is attached, the tire bead is manually placed on the tire bead preselector at two ends of the tire body drum, and the tire bead is taken when the tire body drum is taken by the tire body drum transfer ring and is transferred onto the forming drum. The other mode is that the tire bead pre-setting device is positioned at the outer side of the tire body cylinder transfer ring, the tire bead is manually placed on the external tire bead pre-setting device, the tire bead is automatically transferred to the tire body cylinder transfer ring by the tire bead pre-setting device, the tire body cylinder transfer ring enters a tire body drum station before the cushion rubber is attached, the tire body cylinder is opened to be flat and wide, the tire body cylinder is taken after the cushion rubber is attached, and the tire body cylinder and the tire bead are transferred to the forming drum by the tire body cylinder transfer ring.

For the two modes, the first mode can keep the intermediate ring of the tire body cylinder transfer ring, so that the tire body cylinder transfer is more reliable and has wider application, but because the beat time occupied by manual operation is about 7s, the requirements on the efficiency of the tire building machine are higher and higher, and the market technical requirements that the single tire cycle time is shorter and shorter are not satisfied. In the second mode, because the tire bead is arranged on the outer side of the tire body cylinder transfer ring by using the spare time, the takt time is saved, and the efficiency target is obviously improved; however, the tire bead transfer scheme requires that the tire body cylinder transfer ring has no intermediate ring or only one lower magnet arc plate, so that the tire body cylinder is easy to have no magnet adsorption in the tire body cylinder transfer process, and can collapse due to gravity, and particularly, the tire bead transfer scheme is easy to cause poor tire body cylinder transfer, poor tire dynamic balance data and other tire quality problems under the working conditions of large-size tires or long waiting time of the tire body cylinder carried by the tire body cylinder transfer ring.

Under the market demand background that two carriages with efficiency and quality enter the tire at the same time, a pre-setting device which does not influence the configuration of an intermediate ring of a tire body cylinder transfer ring and can transfer a tire bead without occupying the beat time is very urgent.

Disclosure of Invention

The invention aims to make up for the defects of the prior art and provides a tire bead presetting device which can be used for setting a tire bead in idle time of an operator, does not occupy takt time, can reserve an intermediate ring of a tire body cylinder transfer ring and ensures the quality of a tire.

In order to solve the technical problems, the invention adopts the following technical scheme:

a tire bead presetting device comprises a fixed frame body longitudinally striding over a lathe bed, a sliding plate, a moving arm, an expansion and contraction clamping mechanism and a driving mechanism; the sliding plate is in sliding connection with the linear guide rail fixed on the fixed frame body; the two moving arms are symmetrically arranged on two sides of the lower end of the sliding plate, and the preset distance between the two moving arms is larger than the thickness of a middle ring in a tire body cylinder transfer ring which is installed on the lathe bed in a sliding mode, so that the interference between the two moving arms and the middle ring in the tire bead transfer process is avoided; the two expansion and contraction clamping mechanisms are respectively used for supporting a left tire bead and a right tire bead, and are arranged on the outer sides of the two moving arms in a one-to-one correspondence manner; the driving mechanism is fixed on the fixed frame body and used for driving the sliding plate to longitudinally move along the linear guide rail on the fixed frame body, so that the expansion and contraction clamping mechanism on the left side can be coaxially positioned with the left steel ring on the tire body cylinder transfer ring or the expansion and contraction clamping mechanism on the right side can be coaxially positioned with the right preset ring slidably mounted on the lathe bed, and the left tire bead can be smoothly transferred onto the left steel ring or the right tire bead can be smoothly transferred onto the right preset ring.

Further, the fixing frame body comprises two upright posts and a longitudinal beam; the device comprises a sliding plate, a longitudinal beam, a frame body precision adjusting mechanism, a sliding plate and a frame body precision adjusting mechanism, wherein the longitudinal beam is horizontally arranged between the upper ends of two upright columns, the two ends of the longitudinal beam are respectively connected with the two upright columns through the frame body precision adjusting mechanism, and two linear guide rails matched with the sliding plate for use are symmetrically formed at the lower end of the longitudinal beam.

Furthermore, each frame body precision adjusting mechanism respectively comprises a supporting plate, a locking bolt, a fixing plate and an adjusting bolt; the supporting plate is fixedly connected with the end part of the longitudinal beam, a long circular hole is formed in the side wall of the supporting plate, and the locking bolt penetrates through the long circular hole and is locked on the upright column so as to fix the longitudinal beam and the upright column; the fixed plate is fixedly connected with the side wall of the upright column, the adjusting bolt is vertically screwed on the fixed plate, and the upper end of the adjusting bolt abuts against the lower end of the supporting plate; under the state that the locking bolt is unlocked, the position of the supporting plate can be adjusted by rotating the adjusting bolt, so that the parallelism adjustment of the linear guide rail on the longitudinal beam and the linear guide rail on the lathe bed is realized, and the locking bolt locks the longitudinal beam after the adjustment is finished.

Further, the driving mechanism comprises a motor and a transmission belt; the motor is fixed on the longitudinal beam, the transmission belt is longitudinally installed on the longitudinal beam through two belt pulleys, the upper end of the sliding plate is fixedly connected with the transmission belt, and the motor drives the transmission belt to rotate so as to drive the sliding plate to longitudinally move along the linear guide rail on the longitudinal beam.

Further, the sliding plate comprises a first flat plate, a second flat plate and a sliding plate precision adjusting mechanism; the first flat plate is stacked on the upper end of the second flat plate and fixed by a mounting bolt, a large round hole is formed in the first flat plate, and the mounting bolt can movably penetrate through the large round hole and be locked on the second flat plate so as to fix the first flat plate and the second flat plate; the upper end of the first flat plate is fixedly connected with a clamping block used for being connected with the transmission belt and a sliding block used for being matched with the linear guide rail on the longitudinal beam; the lower end of the second flat plate is fixedly connected with two moving arms; the precision adjusting mechanism of the sliding plate comprises an inverted L-shaped plate and a jackscrew, the upper end of the L-shaped plate is fixedly connected to the first flat plate, and the jackscrew penetrates through the lower end of the L-shaped plate and is in threaded connection with the outer edge of the second flat plate; the sliding plate precision adjusting mechanisms are multiple and distributed around the first flat plate and the second flat plate; under the state that the mounting bolt is unlocked, the position relation of the first flat plate and the second flat plate can be changed by adjusting the jackscrew, and then the position precision of the two moving arms is adjusted, so that the coaxiality of the expansion and contraction clamping mechanisms, the tire body cylinder transfer ring and the right preset ring is ensured.

Further, a guide rail clamp is fixedly connected to the first flat plate and used for clamping the linear guide rail on the longitudinal beam when the expansion and contraction clamping mechanism reaches the automatic ring feeding station.

Furthermore, each expansion and contraction clamping mechanism respectively comprises a driving cylinder, a swing arm, a rotating shaft, a base plate, a turntable, a first connecting rod, a second connecting rod and a supporting roller; the driving cylinder is connected to the moving arm through a cylinder mounting seat; the first end of the swing arm is hinged with the output end of the driving cylinder, and the second end of the swing arm is fixedly connected to the rotating shaft; the rotating shaft is rotatably arranged at the lower end of the moving arm; the base plate is coaxially sleeved on the rotating shaft and fixedly connected with the lower end of the moving arm; the rotary disc is coaxially and fixedly connected with the rotating shaft; the first connecting rods and the second connecting rods are consistent in number and at least three in number, are matched with each other one by one and are uniformly distributed around the circumference of the rotating shaft; the first end of each first connecting rod is hinged with the rotary table, and the second end of each first connecting rod is hinged with the middle part of one second connecting rod; the first end of each second connecting rod is hinged with the base plate, and the second end of each second connecting rod is connected with one supporting roller; the output end of the driving cylinder stretches out and draws back and moves, orders about the swing arm to drive the turntable to follow the rotating shaft to rotate together, and further orders about the first connecting rod to drive the second connecting rod to swing so as to change the distance between the supporting roller and the rotating shaft, and the expansion and contraction action of the expansion and contraction clamping mechanism is realized.

Furthermore, each supporting roller comprises a roller body, a magnet, an eccentric shaft, a locking nut, a bearing, a shaft sleeve and a spring; the end part of the roller body close to the second connecting rod is provided with a flanging used for limiting a tire bead; the magnets are uniformly and circumferentially embedded on the turned edges and used for adsorbing the tire beads; the eccentric shaft comprises a large-diameter shaft and a small-diameter shaft, a first end of the large-diameter shaft is fixedly connected with a limiting cap, a second end of the large-diameter shaft is eccentrically connected with the first end of the small-diameter shaft, an external thread is formed on the outer wall of the second end of the small-diameter shaft and matched with the locking nut for use, a mounting hole is formed in the second connecting rod, and the small-diameter shaft penetrates through the mounting hole and is locked by the second end of the large-diameter shaft and the locking nut; the bearing is arranged between the roller body and the shaft sleeve; the shaft sleeve is slidably sleeved on the large-diameter shaft; the spring is sleeved on the large-diameter shaft and positioned between the shaft sleeve and the end face of the second connecting rod, so that the shaft sleeve is pressed against the limiting cap.

Further, the locking nut is provided with a non-metal insert.

Furthermore, a specification adjusting mechanism is arranged between each cylinder mounting seat and the corresponding moving arm; each specification adjusting mechanism comprises a bracket, a trapezoidal screw rod, a sliding block and a hand wheel; the bracket is fixed on the moving arm, the trapezoidal lead screw is vertically and rotatably mounted on the bracket, the sliding block is in transmission connection with the trapezoidal lead screw, is in sliding connection with the linear guide rail fixed on the bracket and is also fixedly connected with the cylinder mounting seat, and the hand wheel is fixedly connected to the end part of the trapezoidal lead screw and is used for driving the trapezoidal lead screw to rotate; through rotating the hand wheel can order about the slider carries the cylinder mount pad is in the same place along linear guide on the support reciprocates, and then changes the initial position who drives actuating cylinder, makes the harmomegathus diameter of harmomegathus fixture changes to the centre gripping of the size grade tire bead of realization different specifications.

Compared with the prior art, the invention has the beneficial effects that: the tire bead presetting device disclosed by the invention can be used for setting the tire bead in the idle time of an operator, so that the takt time is not occupied, and the production efficiency is improved; but also can keep the intermediate ring of the tire body cylinder transfer ring, ensure the tire body cylinder transfer precision and improve the equipment quality. The invention is suitable for all-steel load three-drum forming machines, and can meet the process requirements of tire bead placement and transmission.

Drawings

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural diagram of a frame body precision adjusting mechanism according to the present invention;

FIG. 3 is a sectional view of the sliding plate according to the present invention;

FIG. 4 is a schematic perspective view of an angle of the collapsible fixture of the present invention;

FIG. 5 is a schematic perspective view of an alternative angle of the collapsible fixture of the present invention;

FIG. 6 is a sectional view of the supporting roller according to the present invention;

FIG. 7 is a schematic view of the structure of the present invention in use with a transfer ring of a carcass sleeve;

fig. 8 is a schematic view of the structure of the present invention used in conjunction with a right preset ring.

Wherein, 7-lathe bed, 801-fixed frame body, 8011-upright post, 8012-longitudinal beam, 802-sliding plate, 8021-first flat plate, 8022-second flat plate, 8023-sliding plate precision adjusting mechanism, 80231-L-shaped plate, 80232-jackscrew, 8024-mounting bolt, 8025-big round hole, 8026-clamping block, 8027-sliding block, 8028-guide rail clamp, 803-moving arm, 804-expansion and contraction clamping mechanism, 8041-driving cylinder, 8042-swing arm, 8043-rotating shaft, 8044-base disc, 8045-rotating disc, 8046-first connecting rod, 8047-second connecting rod, 8048-supporting roller, 80481-486, 80482-magnet, 80483-eccentric shaft, 80484-locking nut, 80485-bearing, 8045-shaft sleeve roller body, 486-roller body, 80487-spring, 80488-flanging, 8049-specification adjusting mechanism, 80491-bracket, 80492-trapezoidal screw rod, 80493-slider, 80494-handwheel, 805-driving mechanism, 8051-motor, 8052-driving belt, 806-frame precision adjusting mechanism, 8061-supporting plate, 8062-locking bolt, 8063-fixing plate, 8064-adjusting bolt, 8065-slotted hole, 9-carcass barrel transfer ring, 901-sidewall expanding ring, 902-left steel ring, 903-middle ring, 904-right steel ring and 10-right preset ring.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail so as not to obscure the embodiments of the invention.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "transverse", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Embodiments of the invention are described in further detail below with reference to the accompanying drawings:

referring to fig. 1 to 8, an embodiment of the present invention provides a tire bead presetting device, which mainly comprises a fixed frame 801 longitudinally spanning above a bed 7, a sliding plate 802, a moving arm 803, an expansion and contraction clamping mechanism 804 and a driving mechanism 805. Wherein, the sliding plate 802 is connected with the linear guide rail fixed on the fixed frame body 801 in a sliding way; the two moving arms 803 are symmetrically arranged at two sides of the lower end of the sliding plate 802, the preset distance between the two moving arms 803 is larger than the thickness of the middle ring 903 in the tire body cylinder transfer ring 9 which is slidably arranged on the machine bed 7, particularly, in the process of transferring the left tire bead, the two moving arms 803 are moved to the position which is coaxial with the tire body cylinder transfer ring 9, and the middle ring 903 is just between the two moving arms 803, so the preset distance between the two moving arms 803 ensures that the middle ring 903 has enough space so as to avoid the two moving arms 803 from interfering with the middle ring 903 in the process of transferring the left tire bead; the two clamping mechanisms 804 are used for supporting the left tire bead and the right tire bead respectively, and the two clamping mechanisms 804 are arranged on the outer sides of the two moving arms 803 in a one-to-one correspondence manner; the driving mechanism 805 is fixed on the fixing frame body 801 and is used for driving the sliding plate 802 to move longitudinally along the linear guide rail on the fixing frame body 801, so that the left expansion and contraction clamping mechanism 804 can be in a coaxial position with the left steel ring 902 on the carcass tube transfer ring 9 or the right expansion and contraction clamping mechanism 804 can be in a coaxial position with the right preset ring 10 slidably mounted on the lathe bed 7, and therefore the left tire bead can be smoothly transferred onto the left steel ring 902 or the right tire bead can be smoothly transferred onto the right preset ring 10.

As a further scheme of the invention: as shown in fig. 1, the fixing frame 801 includes two upright columns 8011 and a longitudinal beam 8012, the longitudinal beam 8012 is horizontally installed between the tops of the two upright columns 8011, two ends of the longitudinal beam 8012 are respectively connected to the two upright columns 8011 through a frame precision adjusting mechanism 806, and two linear guide rails used in cooperation with the sliding plate 802 are symmetrically formed at the lower end of the longitudinal beam 8012. The two frame accuracy adjusting mechanisms 806 are identical and symmetrically arranged, and now the structure of one frame accuracy adjusting mechanism 806 is described in detail by taking as an example, as shown in fig. 2, the frame accuracy adjusting mechanism 806 includes a supporting plate 8061, two locking bolts 8062, a fixing plate 8063, and an adjusting bolt 8064; the supporting plate 8061 is fixedly connected with the end of the longitudinal beam 8012, two long circular holes 8065 are formed in the side wall of the supporting plate 8061, each locking bolt 8062 penetrates through a corresponding long circular hole 8065 to be locked on the upright post 8011 so as to fix the longitudinal beam 8012 and the upright post 8011, the fixing plate 8063 is fixedly connected with the side wall of the upright post 8011, the adjusting bolt 8064 is vertically and threadedly connected to the fixing plate 8063, the upper end of the adjusting bolt 8064 abuts against the lower end of the supporting plate 8061, the position of the supporting plate 8061 can be adjusted by rotating the adjusting bolt 8064 in a state that the two locking bolts 8062 are unlocked, then parallelism adjustment of a linear guide rail on the longitudinal beam 8012 and a linear guide rail on the bed 7 is achieved, and after adjustment, the longitudinal beam 8012 and the upright post 8011 are locked by the two. In addition, the outside of the fixing frame body 801 is coated by an appearance housing assembly, so that the appearance of the equipment is optimized, parts such as the electromagnetic valve and the electric component are not exposed, the equipment meets the functionality, and the appearance is considered at the same time.

As a further scheme of the invention: as shown in fig. 1, the driving mechanism 805 includes a motor 8051 and a transmission belt 8052, the motor 8051 is fixed on the longitudinal beam 8012, the transmission belt 8052 is longitudinally installed on the longitudinal beam 8012 through two pulleys, an upper end of the sliding plate 802 is fixedly connected to the transmission belt 8052 through a clamping block 8026, and the motor 8051 drives the transmission belt 8052 to rotate, so as to drive the sliding plate 802 to longitudinally move along the linear guide rail on the longitudinal beam 8012.

As a further scheme of the invention: as shown in fig. 1 and 3, the sliding plate 802 includes a first plate 8021, a second plate 8022, and a sliding plate accuracy adjustment mechanism 8023. The first flat plate 8021 is stacked on the upper end of the second flat plate 8022 and fixed by the mounting bolt 8024, the first flat plate 8021 is provided with a large circular hole 8025, the diameter of the large circular hole 8025 is larger than the diameter of the screw rod of the mounting bolt 8024 and smaller than the diameter of the nut of the mounting bolt 8024, and the mounting bolt 8024 can movably pass through the large circular hole 8025 and be locked on the second flat plate 8022 so as to fix the first flat plate 8021 and the second flat plate 8022; a clamping block 8026 for connecting with a transmission belt 8052 and a sliding block 8027 for matching with a linear guide rail on the longitudinal beam 8012 are fixedly connected to the upper end of the first flat plate 8021; two moving arms 803 are symmetrically fixed to the lower end of the second plate 8022.

Further, as shown in fig. 3, the sliding plate precision adjusting mechanism 8023 includes an inverted L-shaped plate 80231 and a top wire 80232, the upper end of the L-shaped plate 80231 is fixed to the outer edge of the first flat plate 8021 by bolts, the top wire 80232 is connected to the lower end of the L-shaped plate 80231 through a thread, and the end of the top wire 80232 abuts against the outer edge of the second flat plate 8022; the sliding plate precision adjusting mechanisms 8023 are multiple and distributed around the first plate 8021 and the second plate 8022, specifically, two sliding plate precision adjusting mechanisms 8023 can be respectively arranged on two longitudinal side edges, and one sliding plate precision adjusting mechanism 8023 can be respectively arranged on two transverse side edges; in the state that the mounting bolt 8024 is unlocked, the position relation between the first flat plate 8021 and the second flat plate 8022 can be changed by adjusting the jackscrews 80232 in a mutually matched manner, that is, the position relation between the second flat plate 8022 and the first flat plate 8021 can be adjusted, and further the position precision of the two moving arms 803 can be adjusted, so that the coaxiality of the two collapsible clamping mechanisms 804 with the carcass drum transfer ring 9 and the right preset ring 10 can be ensured. In addition, the second plate 8022 can be divided into two parts, which are separately connected to the first plate 8021 and are also separately connected to one moving arm 803, and each part can be separately adjusted by a plurality of sliding plate precision adjusting mechanisms 8023, so that the two moving arms 803 can be separately adjusted, and the coaxiality between the two moving arms 803 can be adjusted.

As a further scheme of the invention: as shown in fig. 1 and 3, a rail clamp 8028 is further fixed to the first plate 8021, and the rail clamp 8028 is used in cooperation with a linear rail on the longitudinal beam 8012 to clamp the linear rail on the longitudinal beam 8012 when the collapsible clamping mechanism 804 reaches the automatic looping station, so as to prevent the position of the sliding plate 802 from changing. A limit switch is mounted on the longitudinal beam 8012, the limit switch is used in cooperation with the sliding plate 802, when the sliding plate 802 moves in place, the limit switch sends a signal to a control device of the system, and the control device of the system controls the rail clamp 8028 to move and clamp the linear rail on the longitudinal beam 8012.

As a further scheme of the invention: as shown in fig. 1, 4 and 5, two collapsible clamping mechanisms 804 are identical and symmetrically arranged, and now the structure of one collapsible clamping mechanism 804 is described in detail by taking as an example, the collapsible clamping mechanism 804 includes a driving cylinder 8041, a swing arm 8042, a rotating shaft 8043, a base plate 8044, a rotating plate 8045, a first connecting rod 8046, a second connecting rod 8047 and a supporting roller 8048. The cylinder body of the driving cylinder 8041 is fixed on a cylinder mounting seat, and the cylinder mounting seat is connected to the moving arm 803; the first end of the swing arm 8042 is hinged with the output end of the driving cylinder 8041, and the second end is fixedly connected to the rotating shaft 8043; a rotating shaft 8043 is rotatably mounted on the lower end of the moving arm 803; the base plate 8044 is coaxially sleeved on the rotating shaft 8043 and is fixedly connected with the lower end of the moving arm 803, and preferably, six connecting ends are uniformly distributed on the base plate 8044 in the circumferential direction so as to be used for matching with the second connecting rod 8047; the rotating disc 8045 is coaxially and fixedly connected with the rotating shaft 8043; the number of the first connecting rods 8046 and the number of the second connecting rods 8047 are consistent, preferably, six, and the first connecting rods 8046 and the second connecting rods 8047 are matched with each other in a one-to-one correspondence manner and are uniformly distributed around the circumference of the rotating shaft 8043; the first end of each first connecting rod 8046 is hinged with the rotating disc 8045, and the second end is hinged with the middle part of a second connecting rod 8047; the first end of each second connecting rod 8047 is hinged to a connecting end of the base plate 8044, and the second end is connected to a supporting roller 8048. The output end of the driving cylinder 8041 performs telescopic action, so as to drive the swing arm 8042 to drive the rotating shaft 8043 to rotate, the rotating disc 8045 rotates along with the rotating shaft 8043, and further drive the first connecting rod 8046 to drive the second connecting rod 8047 to swing around a hinge point between the connecting end of the first connecting rod 8046 and the connecting end of the base disc 8044, so as to change the distance between the supporting roller 8048 and the rotating shaft 8043, and realize the expansion and contraction action of the expansion and contraction clamping mechanism 804.

As a further scheme of the invention: as shown in fig. 4 and 5, a specification adjusting mechanism 8049 is further disposed between each cylinder mounting seat and the corresponding moving arm 803. Two specification adjusting mechanisms 8049 in the two collapsible clamping mechanisms 804 are identical in structure and are symmetrically arranged, and now the structure of one specification adjusting mechanism 8049 is described in detail by taking as an example, the specification adjusting mechanism 8049 comprises a bracket 80491, a trapezoidal lead screw 80492, a slider 80493 and a hand wheel 80494. The bracket 80491 is fixed on the moving arm 803, the trapezoidal lead screw 80492 is vertically and rotatably mounted on the bracket 80491, the slider 80493 is in transmission connection with the trapezoidal lead screw 80492, the slider 80493 is in vertical sliding connection with a linear guide rail fixed on the bracket 80491, the slider 80493 is also fixedly connected with the cylinder mounting seat, and the hand wheel 80494 is fixedly connected to the end of the trapezoidal lead screw 80492 and used for driving the trapezoidal lead screw 80492 to rotate; the sliding block 80493 can be driven to carry the cylinder mounting seat to move up and down along the linear guide rail on the support 80491 by rotating the hand wheel 80494, so that the initial position of the driving cylinder 8041 is changed, the expansion and contraction diameter of the expansion and contraction clamping mechanism 804 is changed, clamping of the tire beads of different specifications and inch grades is realized, and full-stroke coverage can be realized without replacing tools. In addition, the trapezoidal lead screw 80492 has a self-locking function, and the position is self-locked after the size adjustment is finished.

As a further scheme of the invention: as shown in fig. 6, the support roller 8048 includes a roller body 80481, a magnet 80482, an eccentric shaft 80483, a lock nut 80484, a bearing 80485, a shaft bushing 80486, and a spring 80487. The end part of the roller body 80481, which is close to the second connecting rod 8047, is provided with a flange 80488, the flange 80488 is used for limiting the tire bead, the flange 80488 does not need to be designed and installed on all the roller bodies 80481, and the plurality of roller bodies 80481 can be arranged at intervals; the magnets 80482 are uniformly embedded on the flange 80488 in the circumferential direction, and the magnets 80482 are used for adsorbing the tire bead; the eccentric shaft 80483 comprises a large-diameter shaft and a small-diameter shaft, a limit cap is fixedly connected to the first end of the large-diameter shaft, the second end of the large-diameter shaft is eccentrically connected with the first end of the small-diameter shaft, external threads are formed on the outer wall of the second end of the small-diameter shaft and matched with the locking nut 80484 for use, a mounting hole is formed in the second connecting rod 8047, and the small-diameter shaft penetrates through the mounting hole and is locked by the second end of the large-diameter shaft and the locking nut 80484; the bearing 80485 is installed between the roller body 80481 and the shaft sleeve 80486, specifically, a stepped hole is formed inside the roller body 80481, the outer ring of the bearing 80485 is placed into the stepped hole and locked by a large snap ring, a step is formed on the outer wall of the shaft sleeve 80486, the inner ring of the bearing 80485 is sleeved on the outer wall of the shaft sleeve 80486 and pressed against the step, and then locked by a small snap ring; the shaft sleeve 80486 can be slidably sleeved on the large-diameter shaft in a matching way; the spring 80487 is sleeved on the large-diameter shaft and located between the shaft sleeve 80486 and the end face of the second connecting rod 8047 so as to be used for pushing the shaft sleeve 80486 against the limiting cap, and the spring 80487 is designed to enable the roller body 80481 to have a certain axial movement amount when the ring is automatically wound, so that the winding precision is ensured. As shown in fig. 4 and 5, each collapsible clamping mechanism 804 is provided with six support rollers 8048, the six support rollers 8048 are circumferentially and uniformly distributed around the rotating shaft 8043, and the six support rollers 8048 are used for supporting the tire bead together. In addition, the eccentric shaft 80483 can be used for fine adjustment of the position of the support rollers 8048, specifically, the position of the large-diameter shaft is changed by rotating the small-diameter shaft, so that fine adjustment of the position of the support rollers 8048 is realized, each support roller 8048 can be ensured to be in contact with the tire bead, and the same roundness of each support roller 8048 is ensured. After the adjustment is finished, the small-diameter shaft is locked by using a locking nut 80484 with a non-metal insert, so that the position of the support roller 8048 is prevented from changing.

The working principle of the tire bead presetting device of the present invention will be explained with reference to fig. 7 and 8: the tire body drum station operation step mainly comprises: the method comprises the following steps of composite fitting, composite sewing, seam allowance fitting, cord fabric manual sewing, cord fabric rolling, cushion rubber fitting and tire body tube dismounting, wherein in the cord fabric rolling process, an operator has a certain idle time, and at the moment, the operator can install a left tire bead and a second right tire bead on a left collapsible clamping mechanism 804 and a right collapsible clamping mechanism 804; then, the two collapsible holding mechanisms 804 move to the position coaxial with the tire body cylinder transfer ring 9 along the linear guide rail on the longitudinal beam 8012 and automatically transfer the left tire bead to the left steel ring 902, and then the two collapsible holding mechanisms 804 are reset; then, after the cushion gluing on the carcass drum is completed, the carcass drum transfer ring 9 carries the left tire bead to move to a drum taking station (namely the position of the middle ring 903 in the middle of the carcass drum) of the carcass drum along a linear guide rail on the machine bed 7, after the drum taking station is reached, the right preset ring 10 automatically transfers the carried first right tire bead to a right steel ring 904 of the carcass drum transfer ring 9, then the right preset ring 10 returns to a waiting position, then the left steel ring 902 and the right steel ring 904 of the carcass drum transfer ring 9 shrink to a flat width position, a magnet arc plate of the middle ring 903 shrinks to take the carcass, the carcass drum shrinks and rotates, and the carcass drum transfer ring 9 completes the carcass drum taking; then, when the tire body tube transfer ring 9 carries the tire body tube, the left tire bead and the first right tire bead to the station of the forming drum and the forming process is performed, the right preset ring 10 moves to the upper ring station (i.e. the position where the right preset ring 10 is used for receiving the second right tire bead) along the linear guide rail on the bed 7, the two collapsible clamping mechanisms 804 move to the position coaxial with the right preset ring 10 along the linear guide rail on the longitudinal beam 8012 and automatically transfer the right tire bead to the right preset ring 10, and then the tire body tube transfer ring 9 and the right preset ring 10 both return to the initial positions and perform the cycle operation. In the process of loading the tire bead, when the tire bead loading device is used for the first time, the first right tire bead can be manually installed on the right preset ring 10, and in the subsequent cycle operation, the first right tire bead carried on the right preset ring 10 is the second right tire bead received in the previous operation.

The tire bead presetting device provided by the invention solves the problem that the tire bead transmission can not simultaneously consider the production efficiency and the quality of tire products for a long time in the industry. The takt sequence of the left tire bead and the right tire bead is scientifically and reasonably planned, and the single-tire cycle time is shortened. The precision adjusting structure ensures the transmission precision of the tire bead, and the full-stroke covered expansion and contraction clamping mechanism saves the time for replacing the tool by an operator. The invention lays a foundation for the high efficiency, intellectualization, light weight and low cost of the tire forming machine.

In summary, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can propose other embodiments within the technical teaching of the present invention, but these embodiments are included in the scope of the present invention.

Claims (10)

1. A tire bead presetting device is characterized by comprising a fixed frame body longitudinally striding over a lathe bed, a sliding plate, a moving arm, an expansion and contraction clamping mechanism and a driving mechanism;

the sliding plate is in sliding connection with the linear guide rail fixed on the fixed frame body;

the two moving arms are symmetrically arranged on two sides of the lower end of the sliding plate, and the preset distance between the two moving arms is larger than the thickness of a middle ring in a tire body cylinder transfer ring which is installed on the lathe bed in a sliding mode, so that the interference between the two moving arms and the middle ring in the tire bead transfer process is avoided;

the two expansion and contraction clamping mechanisms are respectively used for supporting a left tire bead and a right tire bead, and are arranged on the outer sides of the two moving arms in a one-to-one correspondence manner;

the driving mechanism is fixed on the fixed frame body and used for driving the sliding plate to longitudinally move along the linear guide rail on the fixed frame body, so that the expansion and contraction clamping mechanism on the left side can be coaxially positioned with the left steel ring on the tire body cylinder transfer ring or the expansion and contraction clamping mechanism on the right side can be coaxially positioned with the right preset ring slidably mounted on the lathe bed, and the left tire bead can be smoothly transferred onto the left steel ring or the right tire bead can be smoothly transferred onto the right preset ring.

2. The tire bead preset apparatus of claim 1, wherein the fixture body comprises two uprights and one longitudinal beam; wherein the content of the first and second substances,

the longitudinal beam is horizontally arranged between the upper ends of the two upright columns, the two ends of the longitudinal beam are respectively connected with the two upright columns through a frame body precision adjusting mechanism, and the lower end of the longitudinal beam is symmetrically provided with two linear guide rails matched with the sliding plate for use.

3. The tire bead presetting device of claim 2, wherein each of the frame body precision adjusting mechanisms respectively comprises a support plate, a locking bolt, a fixing plate and an adjusting bolt; wherein the content of the first and second substances,

the supporting plate is fixedly connected with the end part of the longitudinal beam, a long round hole is formed in the side wall of the supporting plate, and the locking bolt penetrates through the long round hole to be locked on the upright column so as to fix the longitudinal beam and the upright column;

the fixed plate is fixedly connected with the side wall of the upright column, the adjusting bolt is vertically screwed on the fixed plate, and the upper end of the adjusting bolt abuts against the lower end of the supporting plate;

under the state that the locking bolt is unlocked, the position of the supporting plate can be adjusted by rotating the adjusting bolt, so that the parallelism adjustment of the linear guide rail on the longitudinal beam and the linear guide rail on the lathe bed is realized, and the locking bolt locks the longitudinal beam after the adjustment is finished.

4. A tire bead preset device according to claim 2 or 3, wherein the drive mechanism comprises a motor and a drive belt; wherein the content of the first and second substances,

the motor is fixed on the longitudinal beam, the transmission belt is longitudinally installed on the longitudinal beam through two belt pulleys, the upper end of the sliding plate is fixedly connected with the transmission belt, and the motor drives the transmission belt to rotate so as to drive the sliding plate to longitudinally move along the linear guide rail on the longitudinal beam.

5. The tire bead preset apparatus of claim 4, wherein the slide plate includes a first plate, a second plate, and a slide plate precision adjustment mechanism; wherein the content of the first and second substances,

the first flat plate is stacked on the upper end of the second flat plate and fixed by a mounting bolt, a large round hole is formed in the first flat plate, and the mounting bolt can movably penetrate through the large round hole and be locked on the second flat plate so as to fix the first flat plate and the second flat plate;

the upper end of the first flat plate is fixedly connected with a clamping block used for being connected with the transmission belt and a sliding block used for being matched with the linear guide rail on the longitudinal beam;

the lower end of the second flat plate is fixedly connected with two moving arms;

the precision adjusting mechanism of the sliding plate comprises an inverted L-shaped plate and a jackscrew, the upper end of the L-shaped plate is fixedly connected to the first flat plate, and the jackscrew penetrates through the lower end of the L-shaped plate and is in threaded connection with the outer edge of the second flat plate;

the sliding plate precision adjusting mechanisms are multiple and distributed around the first flat plate and the second flat plate;

under the state that the mounting bolt is unlocked, the position relation of the first flat plate and the second flat plate can be changed by adjusting the jackscrew, and then the position precision of the two moving arms is adjusted, so that the coaxiality of the expansion and contraction clamping mechanisms, the tire body cylinder transfer ring and the right preset ring is ensured.

6. A tire bead preset device according to claim 5, wherein a rail clamp is affixed to the first plate for clamping the linear rail on the longitudinal beam when the collapsible clamp reaches the automatic winding station.

7. The tire bead presetting device of claim 1, wherein each of the collapsible clamping mechanisms respectively comprises a driving cylinder, a swing arm, a rotating shaft, a base plate, a turntable, a first link, a second link and a support roller; wherein the content of the first and second substances,

the driving cylinder is connected to the moving arm through a cylinder mounting seat;

the first end of the swing arm is hinged with the output end of the driving cylinder, and the second end of the swing arm is fixedly connected to the rotating shaft;

the rotating shaft is rotatably arranged at the lower end of the moving arm;

the base plate is coaxially sleeved on the rotating shaft and fixedly connected with the lower end of the moving arm;

the rotary disc is coaxially and fixedly connected with the rotating shaft;

the first connecting rods and the second connecting rods are consistent in number and at least three in number, are matched with each other one by one and are uniformly distributed around the circumference of the rotating shaft;

the first end of each first connecting rod is hinged with the rotary table, and the second end of each first connecting rod is hinged with the middle part of one second connecting rod;

the first end of each second connecting rod is hinged with the base plate, and the second end of each second connecting rod is connected with one supporting roller;

the output end of the driving cylinder stretches out and draws back and moves, orders about the swing arm to drive the turntable to follow the rotating shaft to rotate together, and further orders about the first connecting rod to drive the second connecting rod to swing so as to change the distance between the supporting roller and the rotating shaft, and the expansion and contraction action of the expansion and contraction clamping mechanism is realized.

8. Tire bead presetting device according to claim 7, characterized in that each of the support rollers comprises a roller body, a magnet, an eccentric shaft, a lock nut, a bearing, a bushing and a spring, respectively; wherein the content of the first and second substances,

a flange used for limiting a tire bead is formed at the end part of the roller body close to the second connecting rod;

the magnets are uniformly and circumferentially embedded on the turned edges and used for adsorbing the tire beads;

the eccentric shaft comprises a large-diameter shaft and a small-diameter shaft, a first end of the large-diameter shaft is fixedly connected with a limiting cap, a second end of the large-diameter shaft is eccentrically connected with the first end of the small-diameter shaft, an external thread is formed on the outer wall of the second end of the small-diameter shaft and matched with the locking nut for use, a mounting hole is formed in the second connecting rod, and the small-diameter shaft penetrates through the mounting hole and is locked by the second end of the large-diameter shaft and the locking nut;

the bearing is arranged between the roller body and the shaft sleeve;

the shaft sleeve is slidably sleeved on the large-diameter shaft;

the spring is sleeved on the large-diameter shaft and positioned between the shaft sleeve and the end face of the second connecting rod, so that the shaft sleeve is pressed against the limiting cap.

9. The tire bead preset apparatus of claim 8, wherein the lock nut is a lock nut with a non-metallic insert.

10. A tire bead presetting device according to any one of claims 7-9, characterized in that a gauge adjustment mechanism is further provided between each cylinder mount and the respective moving arm;

each specification adjusting mechanism comprises a bracket, a trapezoidal screw rod, a sliding block and a hand wheel; the bracket is fixed on the moving arm, the trapezoidal lead screw is vertically and rotatably mounted on the bracket, the sliding block is in transmission connection with the trapezoidal lead screw, is in sliding connection with the linear guide rail fixed on the bracket and is also fixedly connected with the cylinder mounting seat, and the hand wheel is fixedly connected to the end part of the trapezoidal lead screw and is used for driving the trapezoidal lead screw to rotate;

through rotating the hand wheel can order about the slider carries the cylinder mount pad is in the same place along linear guide on the support reciprocates, and then changes the initial position who drives actuating cylinder, makes the harmomegathus diameter of harmomegathus fixture changes to the centre gripping of the size grade tire bead of realization different specifications.

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