Transfer ring transfer system of radial tire building machine

Abstract

The utility model discloses a transfer ring transfer system of a radial tire building machine. The transfer ring transfer system comprises a guide rail, a plurality of transfer ring mounting seats and transfer rings, the transfer ring mounting seat is in sliding connection with the guide rail through a sliding block; the transfer ring is fixedly connected with the transfer ring mounting seat; and the transmission ring mounting seat is driven by a linear motor. According to the radial tire transfer ring transfer system disclosed by the utility model, the transfer ring is driven by the linear motor, so that the influence of an inter-tooth gap in a gear rack transmission process is avoided, and the central positioning of a radial tire tread composite part or a tire body composite part in the transmission process is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a radial tire production equipment, especially a radial tire forming machine transmission ring tire tread composite piece and carcass composite piece transmission system. BACKGROUND

[0002] In the tire forming process of the existing equipment, the well-fitted tire tread composite piece and carcass composite piece need to be transmitted from the belt layer fitting drum to the forming drum to realize accurate positioning. The original traditional structure is assembled into an integral body by multiple ring bodies, which has poor positioning accuracy and unstable performance, causing tire quality problems.

[0003] Chinese patent CN201821611080.4 uses a bed body support guide rail made of integral casting or steel welding; the positioning accuracy is improved, but there is still room for improvement. UTILITY MODEL CONTENT

[0004] The inventor found through research that the gear and rack, as a transmission mechanism, drive the transmission ring to move. Due to the gap between the teeth, the positioning deviates after the transmission ring switches in the forward and reverse directions, affecting the cooperation of the tire tread composite piece and the carcass composite piece.

[0005] In addition, the telescopic mechanism composed of locking cylinders still has the problem of positioning center deviation for the processed tire products, which greatly affects the dynamic balance of the tire. The reason is that the above-mentioned scheme provides the same air pressure for the locking cylinders to realize consistent output pressure of all locking cylinders. However, due to the different distribution of each telescopic mechanism on the circumferential surface, the weight of the clamping block and the piston is different from the extension direction of the piston rod; the component of gravity in the clamping direction of the clamping block is different, which finally leads to different thrusts of each locking cylinder on the tire tread composite piece or the carcass composite piece. Therefore, it is necessary to develop a full steel radial tire tread and carcass transmission ring in which each telescopic mechanism can provide reasonable thrust according to its position on the circumferential surface.

[0006] The utility model aims at providing a full steel radial tire transmission ring with novel and unique structure, convenient to use, and capable of improving tire quality; the specific technical scheme is as follows:

[0007] A radial tire forming machine transmission ring transmission system, comprising a guide rail, a plurality of transmission ring mounting seats, and a transmission ring; the transmission ring mounting seat is slidably connected with the guide rail through a sliding block; the transmission ring is fixedly connected with the transmission ring mounting seat; the transmission ring mounting seat is driven by a linear motor.

[0008] Further, the mover coil of the linear motor is fixedly installed at the bottom of the transmission ring mounting seat; the stator of the linear motor is arranged in parallel with the guide rail.

[0009] Further, the stator is composed of a plurality of permanent magnets.

[0010] Further, the meridian tire transmission ring comprises a base and a ring body, the ring body is installed on the base; a plurality of stretchable mechanisms are arranged on the ring body to form a tread clamping mechanism; each of the stretchable mechanisms is provided with an independent clamping force controller to realize the adaptation of the clamping force generated by the stretchable mechanism to the position of the stretchable mechanism on the ring body.

[0011] Further, the stretchable mechanism is composed of an electric push rod assembly and a clamping block.

[0012] Further, the electric push rod assembly comprises an electric push rod mounting seat and an electric push rod; the electric push rod mounting seat is fixedly connected with the ring body, and the electric push rod is fixedly installed on the electric push rod mounting seat; the extension direction of the push rod of the electric push rod passes through the circumferential center of the ring body; one end of the push rod is fixedly connected with the clamping block.

[0013] Further, a guide rod is further arranged on the clamping block; the extension direction of the guide rod is parallel to the direction of the push rod; a linear bearing sleeved on the guide rod is fixedly installed on the electric push rod mounting seat.

[0014] Further, the clamping block is composed of a clamping block body and a clamping block base; the clamping block body and the clamping block base are detachably connected.

[0015] The meridian tire forming machine transmission ring transmission system drives the transmission ring through the linear motor, avoids the influence of the tooth gap in the gear and rack transmission process, and thus ensures that the center positioning of the meridian tire tread composite or the carcass composite in the transmission process is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the meridian tire forming machine transmission ring transmission system in the embodiment;

[0017] Figure 2 It is an exploded view of the transmission ring mounting seat connection structure;

[0018] Figure 3 It is a structure schematic view of the meridian tire transmission ring in the embodiment;

[0019] Figure 4 It is a structure schematic view of the clamping unit; Figure 1

[0020] Figure 5 It is a structure schematic view of the clamping unit. Figure 1

[0021] Figure 6 It is a structure schematic view of the clamping unit. Figure 2

[0022] ​​​In the diagram: 1. Base; 2. Ring body; 21. Ring body side plate; 22. Ring body guard plate; 3. Clamping unit; 31. Mounting seat; 32. Electric push rod; 33. Guide rod; 34. Guide rod seat; 35. Clamping block; 351. Clamping block body; 352. Spike; 36. Clamping block base; 4. Photoelectric sensor; 5. Warning light; 6. Guide rail; 7. Slider; 8. Linear motor; 81. Stator; 82. Mover; 9. Transfer ring mounting seat; 10. Supporting square steel. Detailed Implementation

[0023] The present invention will be described more fully below with reference to embodiments. The present invention can be embodied in many different forms and should not be construed as being limited to the exemplary embodiments described herein.

[0024] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, an element described as being “down” of another element or feature would be positioned “up” of that other element or feature. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0025] like Figure 1 As shown, the radial tire forming machine transfer ring system in this embodiment includes a guide rail 6, several transfer ring mounting seats 9, a carcass transfer ring (not shown in the figure), and a tread transfer ring. The transfer ring mounting seats are slidably connected to the guide rail via sliders 7. The transfer rings are fixedly connected to the transfer ring mounting seats. The transfer ring mounting seats are driven by a linear motor 8. Using a linear motor to drive the transfer rings can achieve higher precision in the direct fit between the transfer rings; the axial relative positions of each tread composite and the carcass composite are more accurate, which is beneficial to improving tire quality.

[0026] like Figure 2 As shown, the mover coil (mover 82) of the linear motor is fixedly installed at the bottom of the transmission ring mounting base; the tread transmission ring and the carcass transmission ring share a stator 81; the stator 81 of the linear motor is arranged parallel to the guide rail.

[0027] The stator is composed of several conductive metal blocks arranged in a simple structure.

[0028] The guide rails and the stator of the linear motor can be fixed to a concrete foundation or to a one-piece cast iron bed. The bed is made of cast steel or welded steel, ensuring rigidity and precision.

[0029] The bed can be made of several horizontal steel plates welded together; the rigidity of the guide rail and stator is improved by supporting the square steel 10; and the straightness of the guide rail and stator is ensured by precision machining of the square steel 10; which makes it easier to ensure the concentricity of the transmission ring and improves the quality of the tire.

[0030] like Figure 3 , Figure 4 As shown, the radial tire transfer ring in this embodiment includes a base 1 and a ring body 2, with the ring body 2 mounted on the base 1. The ring body 2 is equipped with a tread clamping mechanism consisting of several clamping units 3. The clamping units are arranged in a ring around the tire tread (not shown in the figure). By clamping the tire tread, the tire's central axis remains unchanged even when the diameter of the clamping drum decreases and it no longer supports the tire tread. Each clamping unit 3 in this embodiment has an independent clamping force controller for its telescopic mechanism, enabling it to generate different clamping forces on the tire tread. Since the moving part of the clamping unit 3 has gravity, and the clamping unit 3 is positioned differently on the ring body 2, the angle between the force output by its telescopic mechanism and the gravity of the moving part, as well as the angle with the gravity of the tire tread, is different. Therefore, it is necessary to adjust the magnitude of the output force of the telescopic mechanism so that the vector sum of all its output forces, the gravity of its moving part, and the gravity of the tire tread is equal, thus adapting the clamping force generated by all telescopic mechanisms to their positions on the ring body. For example, in the clamping unit above the tread, the gravity of its moving part has a positive component in the direction of the output force; the clamping force should be the sum of the output force and the component of the gravity of the moving part in the direction of the output force, so the output force needs to be reduced; in the clamping unit below the tread, the gravity of its moving part has a negative component in the direction of the output force; the clamping force should be the difference between the output force and the component of the gravity of the moving part in the direction of the output force, so the output force needs to be increased; by adjusting the output force to ensure that the clamping force acting on the tire tread clamping unit is basically the same, higher center positioning accuracy of the tire tread is achieved, which is conducive to manufacturing tires with better dynamic balance and uniformity.

[0031] The telescopic mechanism can use a pneumatic cylinder, electric cylinder, or hydraulic cylinder to control the movement of the clamping block 35; a pressure sensor can be set at the front end of the clamping block that contacts the tire tread to provide feedback on the clamping force and control the clamping force of each clamping unit to match its position on the ring.

[0032] Preferably, the telescopic mechanism is composed of an electric push rod assembly and a clamping block. In this embodiment, the electric push rod 32 rotates the nut in the nut screw rod, and the screw rod does not rotate; the nut drives the screw rod to move linearly. The thrust of the electric push rod is positively related to the current of the driving unit and is stable in proportion, which is convenient to control. In the case of eliminating the pressure sensor for feedback, the accuracy of the output force can still be maintained. At the same time, due to the small size of the electric push rod 32, it is beneficial to reduce the overall size of the telescopic mechanism; more clamping units can be provided on the ring body 2; for example: the original 10 clamping units can be increased to 20 clamping units; after increasing the number of clamping units, the stress of the tread is more uniform; the deformation is smaller. That is, two sets of clamping block tools can complete the original five specifications of Ø1150-1220, Ø1090-1160, Ø1030-1100, Ø970-1040 and Ø910-980 full coverage.

[0033] As shown in Figure 5 and Figure 6 , the electric push rod assembly includes an electric push rod mounting seat 31 and an electric push rod 32; the electric push rod mounting seat 31 is fixedly connected with the ring body 2 and can be fixed by bolts. The electric push rod 32 is fixedly installed on the electric push rod mounting seat 31 by bolts; the extension direction of the push rod of the electric push rod 32 points to the circumferential center of the ring body; one end of the push rod is fixedly connected with the clamping block 35; and the clamping block 35 is driven to move radially along the ring body 2.

[0034] In order to avoid bending of the electric push rod, the clamping block 35 is further provided with a guide rod 33; the extension direction of the guide rod 33 is parallel to the direction of the push rod; a guide rod seat 34 sleeved on the guide rod 33 is fixedly installed on the electric push rod mounting seat 31; the rigidity of the electric push rod assembly is increased by the guide rod 33; the number of guide rods 33 can be one, two or more. The guide rod seat 34 can be a linear bearing; the friction is smaller during extension and retraction.

[0035] The clamping block 35 can be provided integrally or can be composed of a clamping block body 351 and a clamping block base 36; the clamping block body and the clamping block base are detachably connected. The detachable structure facilitates replacement of the clamping block body; the clamping block 35 closer to the curvature of the processed tire is used to clamp the tire tread; the stress of the tread is more uniform, which is beneficial to improve the processing quality of the tire.

[0036] In order to facilitate exhaust during the vulcanization process, a plurality of sharp nails 352 for piercing the tread are provided on the working surface of the clamping block; the number of sharp nails 352 of each clamping block 35 can be 2, 3, 4 or more. When the clamping unit 3 clamps the tread, the tread is pierced to form an exhaust hole.

[0037] The protruding height adjusting mechanism is arranged between the spike and the clamping block, and the protruding height of the spike 352 from the working surface of the clamping block 35 is adjusted by the protruding height adjusting mechanism to adapt to different tire thicknesses, so that all the tire tread needing to be punctured can be punctured. The height adjusting mechanism can adopt various forms, such as arranging an internal thread in the spike mounting hole, arranging an external thread on the cylindrical part of the spike 352, and arranging a slot, a cross or an internal hexagonal groove on the tail of the spike to facilitate the rotation of the spike 352 by a tool.

[0038] The ring body 2 is composed of a ring-shaped support and outer ring body side plates 21 and ring body guards 22; the steel plate of the ring body side plate 21 is relatively thick, so that the rigidity of the ring body 2 is improved; and the ring body guard 22 can prevent sundries from entering the ring body 2.

[0039] The ring body side plate 21 is provided with photoelectric sensors 4 on both sides; the photoelectric sensors on both sides of the rack are matched; when a person is detected to mistakenly enter the transmission ring movement area, a protection program is started, and the transmission ring stops moving; and accidents are avoided.

[0040] The top of the ring body 2 is also provided with warning lights 5, which flicker to prompt the on-site personnel when the transmission ring works; and the unsafe operation space is avoided.

[0041] The transmission ring of the application is adopted; since the thrust of the linear motor is proportional to the excitation current thereof, different currents can be passed through different linear motors to realize that the thrust of each clamping block acting on the tire tread composite part is consistent and locked, so that the influence of the part on the dynamic balance of the tire is greatly reduced; and the locking cylinder used in the original centripetal motion has consistent air pressure, and the thrust of the clamping block pushed by the cylinder is the same, but the directions of the ten clamping blocks are different, so that the pressure of the clamping block acting on the tire tread composite part will be inconsistent due to the action of gravity, which will affect the concentricity of the center of the part holding the tire tread composite part with the drum, and further affect the dynamic balance of the tire. The linear motor is adopted, the clamping force is conveniently adjusted individually, and the above problems are avoided.

[0042] In addition, the reliability of the motor brake is also much higher than that of the locking cylinder locking, and the negative influence of the part on the tire quality is also reduced.

[0043] Thirdly, the size of the linear motor is much lower than that of the locking cylinder, the number of clamping blocks can be increased, and different tire specifications can be replaced.

[0044] The above examples are only used to illustrate the application, and in addition to this, there are various different embodiments, and these embodiments can be thought of by those skilled in the art after understanding the application idea, so that they are not listed one by one here.

Claims

1. A transfer ring transmission system of a radial tire building machine, comprising a guide rail, a transfer ring mounting seat and a transfer ring; the transfer ring mounting seat is slidably connected with the guide rail through a sliding block; the transfer ring is fixedly connected with the transfer ring mounting seat; characterized in that, The transmission ring mounting seat is driven by a linear motor.

2. The meridian tire building machine transfer ring transfer system of claim 1 wherein, A mover coil of the linear motor is fixedly installed at the bottom of the transmission ring mounting seat; and a stator of the linear motor is arranged in parallel with the guide rail.

3. The transfer ring transfer system for a radial tire building machine of claim 2 wherein, The stator is composed of a plurality of permanent magnets.

4. The transfer ring transfer system of the radial tire building machine of claim 3 wherein, The transmission ring comprises a base and a ring body, the ring body is installed on the base; a tire clamping mechanism composed of a plurality of telescopic mechanisms is arranged on the ring body; each telescopic mechanism is provided with an independent clamping force controller, so that the clamping force generated by the telescopic mechanism is adapted to the position of the telescopic mechanism on the ring body.

5. The meridian tire building machine transfer ring transfer system of claim 4 wherein, The telescopic mechanism is composed of an electric push rod assembly and a clamping block; the electric push rod assembly comprises an electric push rod mounting seat and an electric push rod; the electric push rod mounting seat is fixedly connected with the ring body, and the electric push rod is fixedly installed on the electric push rod mounting seat; the extension direction of the push rod of the electric push rod is through the circumferential center of the ring body; one end of the push rod is fixedly connected with the clamping block.

6. The transfer ring transfer system of the radial tire building machine of claim 5 wherein, A guide rod is further arranged on the clamping block; the extension direction of the guide rod is parallel to the direction of the push rod; a linear bearing sleeved on the guide rod is fixedly installed on the electric push rod mounting seat.

7. The meridian tire building machine transfer ring transfer system of claim 5 wherein, The clamping block is composed of a clamping block body and a clamping block base; the clamping block body and the clamping block base are detachably connected.

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