CN220339313U - Tyre blank circumference and roundness measuring device - Google Patents
Tyre blank circumference and roundness measuring device Download PDFInfo
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- CN220339313U CN220339313U CN202321846018.4U CN202321846018U CN220339313U CN 220339313 U CN220339313 U CN 220339313U CN 202321846018 U CN202321846018 U CN 202321846018U CN 220339313 U CN220339313 U CN 220339313U
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- measuring roller
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- 238000005259 measurement Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims description 20
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 210000001161 mammalian embryo Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 101100190621 Arabidopsis thaliana PLC4 gene Proteins 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model relates to the field of measuring devices, and provides a device for measuring the circumference and roundness of a tire blank, which aims to solve the problems that the accuracy in measuring the diameter, circumference and roundness of the tire blank is affected and a tire forming machine is needed in the prior art; the green tyre fixing group comprises a rotating shaft, a telescopic arm and a supporting block, one end of the rotating shaft is connected with an output shaft of the driving mechanism, and the telescopic arm is radially arranged on the periphery of the rotating shaft; the linear reciprocating motion mechanism is provided with a measuring roller, and the rotation center line of the green tyre is parallel to the rotation center line of the measuring roller; the shaft end of the measuring roller is provided with an encoder, and the PLC is in communication connection with the encoder. The device can carry out off-line measurement, and the measuring precision is high, can adapt to the rim size of different specification embryo blanks.
Description
Technical Field
The utility model relates to the field of measuring devices, in particular to a device for measuring the circumference and roundness of a tire blank.
Background
In the tire molding process, particularly in the trial production process, accurate measurement of the outer circumference of the produced green tire is generally required, so that the green tire produced in subsequent mass production is ensured to meet the process requirements. The conventional measurement method is that a worker places a produced green tire on an inspection platform, a steel tape is used for manual measurement, the manual measurement is difficult to ensure that the tape is always positioned at the center line of the green tire, and measurement distortion can be caused; the steel tape used cannot well ensure the adhesion of the tape and the green tyre, so that the outer circumference of the measured green tyre is usually larger than that of an actual green tyre; the manual rotation of the green tyre is inconvenient.
Patent document CN111521099a discloses a measuring instrument suitable for measuring roundness and diameter of an annular product, comprising a frame, a table top, a measuring assembly, a driving device and a control system; the workbench surface is arranged on the frame, the annular product to be measured and the measuring components are arranged on the workbench surface, and the measuring components are distributed around the annular product to be measured; the driving device is arranged on the workbench surface and used for driving the annular product to be tested to rotate; the control system is arranged on the frame, connected with the measuring assembly and the driving device and used for controlling the driving device to run, receiving and processing the measuring data of the measuring assembly; the measuring assembly includes an inner diameter measuring assembly and an outer diameter groove measuring assembly. The annular product is placed on the workbench surface, the pressing mechanism presses the annular product, and the hardness of the newly produced green tire is insufficient, so that the green tire is flattened on the lower surface under the action of pressure, and the roundness is poor.
Patent document CN111998792a discloses a green tyre out-of-roundness on-line detection device of a tyre building machine, the device comprises a laser detector and a controller, the laser detector is arranged on a crown transfer ring of the tyre building machine and used for detecting the distance from the laser detector to a green tyre on a building drum of the tyre building machine, the laser detector is in communication connection with the controller, and the controller comprises a data collector used for collecting data detected by the laser detector, a data processor used for processing the data collected by the data collector and a display used for displaying the data processed by the data processor. The device needs to rotate a forming drum during measurement by means of a tire forming machine, and measurement of a green tire cannot be achieved after the device is put down in a production line.
Disclosure of Invention
The utility model aims to solve the problems that in the prior art, the accuracy is affected due to extrusion deformation of a tire blank in the aspects of measuring the diameter, the circumference and the roundness of the tire blank, and the tire blank cannot be measured in an off-line manner by means of a tire forming machine.
The utility model is realized by adopting the following technical scheme:
a tyre blank circumference and roundness measuring device comprises a frame, a tyre blank fixing group, a PLC, a linear reciprocating motion mechanism, a measuring roller and an encoder; the frame provides a mounting foundation, the tire blank fixing group comprises a rotating shaft, telescopic arms and supporting blocks, one end of the rotating shaft is connected with an output shaft of the driving mechanism, the number of the telescopic arms is multiple, the periphery of the rotating shaft is radially arranged, the supporting blocks are arranged at the tail ends of the telescopic arms, the outer surfaces of the supporting blocks are cylindrical surfaces, all the supporting blocks form a tire blank sleeve, when the telescopic arms are completely contracted, the size of the tire blank sleeve formed by the supporting blocks is allowed to be sleeved into a tire blank, and when the telescopic arms are stretched to a certain extent, the tire blank sleeve formed by the supporting blocks supports and fixes the tire blank; one side of the green tire fixing group is fixedly provided with a linear reciprocating mechanism, the linear reciprocating mechanism is provided with a measuring roller, and the rotation center line of the green tire is parallel to the rotation center line of the measuring roller; the shaft end of the measuring roller is provided with an encoder, and the PLC is in communication connection with the encoder.
Further, the generatrix of the cylindrical surface of the support block is parallel to the axis of the rotary shaft.
Further, a displacement sensor is further arranged on the measuring roller, and the displacement sensor is in communication connection with the PLC. When the rolling surface of the measuring roller contacts the tire blank, the displacement sensor contacts the tire blank at the same time, the displacement sensor controls the second driving mechanism to stop working when contacting the tire blank, and the roller support stops moving, so that the situation that gaps exist between the measuring roller and the tire blank or the roller cannot rotate well due to overlarge contact pressure can be avoided.
Further, an optical sensor is arranged on one side of the tire blank fixing group, the optical sensor is in communication connection with the PLC, and the photosensitive strip is arranged on the tire blank. When the photosensitive strip on the green tyre rotates under the optical sensor for the first time, the PLC controls the encoder to start working, and when the photosensitive strip passes through the optical sensor again, the PLC controls the encoder to stop working and output the measured rotation number.
Further, the material of the outer surface of the supporting block is flexible.
Further, the rotating shaft is a stepped shaft, a bearing is arranged on the frame, and the bearing supports the stepped shaft to rotate.
Further, the rolling surface of the measuring roller is a frosted surface.
Further, the linear reciprocating mechanism is a linear module, the linear module comprises a guide rail and a sliding block, a roller support is arranged on the sliding block, and a measuring roller is arranged on the roller support.
Further, the driving mechanism is a motor.
Further, the optical sensor is an infrared optical sensor.
The beneficial effects are that:
according to the utility model, the green tyre produced in the forming process is placed on the green tyre fixing group with adjustable size for rotation, so that the external diameter and the measurement result of the green tyre parameters related to the external diameter are not easily influenced due to extrusion deformation of the green tyre, the precision and the measurement efficiency can be effectively improved, the green tyre can be adapted to green tyres of different types, the forming machine is not needed in the measurement process, and the requirement of off-line measurement is met.
Drawings
FIG. 1 is a schematic view showing the overall structure of a tire blank circumference and roundness measuring apparatus according to an embodiment;
FIG. 2 is a side view of a tire blank circumference and roundness measuring apparatus according to the embodiment;
fig. 3 is a partial configuration diagram of a tire green circumference and roundness measuring apparatus according to the embodiment.
In the above figures: the device comprises a 1-device shell, a 2-tire blank, a 3-tire blank fixing group, a 4-PLC, a 5-slider, a 6-measuring roller, a 7-encoder, an 8-first driving motor, a 9-stepped shaft, a 10-bearing, an 11-optical sensor, a 12-photosensitive bar, a 13-second driving motor, a 14-guide rail, a 15-telescopic arm, a 16-supporting block and a 17-displacement sensor.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more readily understood, a further description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
Examples
The tire blank circumference and roundness measuring device comprises a device shell 1, a blank fixing group 3, a PLC and control panel 4, a sliding block 5, a measuring roller 6, an encoder 7, a first driving motor 8, a rotating shaft 9, an optical sensor 11, a photosensitive strip 12, a second driving motor 13, a guide rail 14, a telescopic arm 15, a supporting block 16 and a displacement sensor 17, as shown in fig. 1-3.
The tire blank fixing group 3 is arranged in the device shell 1 and is used for fixing a tire blank 2, the tire blank fixing group 3 is composed of a rotating shaft 9, telescopic arms 15 and supporting blocks 16, one end of the rotating shaft 9 is connected with an output shaft of the first driving motor 8, the telescopic arms 15 are multiple and are arranged radially along the periphery of the rotating shaft 9, the supporting blocks 16 are arranged at the tail ends of the telescopic arms 15, the outer surfaces of the supporting blocks 16 are cylindrical surfaces, bus bars of the cylindrical surfaces are parallel to the axis of the rotating shaft, all the supporting blocks 16 form a tire blank sleeve, when the telescopic arms 15 are completely contracted, the size of the tire blank sleeve formed by the supporting blocks 16 allows a tire blank to be sleeved, and when the telescopic arms 15 are stretched to a certain extent, the tire blank sleeve formed by the supporting blocks 16 fixes the tire blank. The supporting block 16 is made of flexible materials, so that rubber materials at the positions of tire beads can be prevented from being damaged, and meanwhile, a tire blank can be well supported, and deformation of the tire blank under the action of the dead weight is avoided.
The telescopic boom 15 adopts a piston type telescopic boom, can freely stretch out and draw back, can adapt to the rim sizes of the tire blanks of different specifications, does not need to replace fixed sleeves for the tire blanks of different specifications, and is more convenient and labor-saving. The rotation shaft 9 is preferably a stepped shaft, which is supported for rotation by a bearing 10.
The device shell of one side of the tire blank fixing group 3 is internally and fixedly provided with a linear module, the linear module comprises a guide rail 14 and a sliding block 5, the sliding block 5 is connected with a roller bracket, and a measuring roller 6 is arranged at the tail end of the roller bracket. In order to reduce the friction force of the rotation of the measuring roller, the measuring roller is arranged on the roller bracket through a bearing. The linear module is driven by a second drive motor 13. The center line of the green tyre 2 is parallel to the center line of the measuring roller 6 and on the same horizontal plane.
In order to reduce the sliding displacement between the measuring roller and the green tyre, the rolling surface of the measuring roller 6 is made of a material with a large friction coefficient. For example, a frosted surface is adopted, larger bulges or sharpness are avoided on the surface, the tread is prevented from being scratched, and the measuring roller can flatten the tilting sizing material on the surface of the tire blank to a certain extent in the rolling process.
The PLC4 is in communication connection with the encoder 7, the optical sensor 11, the first driving motor 8 and the second driving motor 13, and is provided with a touch screen for convenient operation.
The encoder 7 is installed at the axle head of measuring gyro wheel 6, and encoder 7 record measuring gyro wheel pivoted number of turns in driven rotatory in-process to data transmission PLC.
In order to ensure that the number of turns measured by the roller is accurate, an optical sensor 11 is also arranged in the outer device shell of the green tire fixing group 3, and a photosensitive strip 12 of the optical sensor 11 is stuck on the green tire 2. When the photosensitive bar 12 on the green tire rotates under the optical sensor 11 for the first time, the PLC4 controls the encoder 7 to start working, and when the photosensitive bar 12 passes through the optical sensor 11 again, the PLC4 controls the encoder 7 to stop working and outputs the measured rotation number. The number of measurements can be set by the PLC4, so that the more accurate outer circumference of the green tyre can be obtained by averaging.
In order to ensure that the measuring roller 6 is in close contact with the green tyre 2, a displacement sensor 17 is also arranged on the measuring roller 6. The linear module drives the measuring movable roller to move back and forth, when the rolling surface of the measuring roller contacts the tire blank 2, the displacement sensor 7 contacts the tire blank 2 at the same time, at the moment, the displacement sensor 7 returns a voltage signal to the PLC, and the second driving motor 13 is controlled to stop working, so that the tire blank 2 and the measuring roller 6 are in seamless contact, and the displacement sensor 7 plays a role of a limit switch.
The working process comprises the following steps:
fixing the blank 2 to be measured on a blank fixing group, and adjusting the telescopic arm 15 to enable the blank 2 to be well supported and fixed, so that the central axis of the blank 2 is parallel to the central axis of the measuring roller 6; the power supply is turned on, the first driving motor 8 starts to work, the rotating shaft 9 is driven to rotate, the rotating shaft 9 drives the green tire on the green tire fixing group 3 to rotate, and no relative rotation exists between the green tire fixing group 3 and the green tire 2.
After the positioning of the tire blank 2 is finished, the PLC controls the sliding block 5 to drive the measuring roller 6 to move towards the tire blank until the displacement sensor 7 contacts the surface of the tire blank 2, the sliding block 5 stops moving, the measuring roller 6 contacts with the measuring tire blank 2, the tire blank 2 rotates to drive the measuring roller 6 to rotate, when the photosensitive strip 12 passes through the optical sensor 11 for the first time, the PLC4 controls the encoder 7 to work, the number of rotation turns of the measuring roller 6 is recorded, and when the photosensitive strip 12 passes through the optical sensor 11 for the second time, the encoder 7 stops working, and the outer circumference of the tire blank 2 is obtained through calculation.
The outer perimeter calculating method comprises the following steps: in one green tire measurement, assuming that N times of measurement are performed, the number of encoder output turns is Pn, and the outer circumference of the measurement roller is Cc, the outer circumference ct= (p1+p2+ … +pn) ×cc/N of the green tire. In one-time green tyre measurement, the measurement is carried out for multiple times and is averaged, so that the error of a measurement result can be reduced better, and the measurement accuracy is improved.
The optical sensor 7 may also return the distance Lf from the surface of the green tyre 2 to the optical sensor 7, wherein the maximum and minimum values are Lfmax and Lfmin, respectively, while the green tyre center-to-sensor distance Lc is known due to the fixed position, resulting in a green tyre maximum diameter rmax=lc-Lfmin, and likewise the minimum diameter rmin=lc-Lfmax, the true circularity r= |rmax-rmin|.
In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "coupled," and the like are to be construed broadly and may be, for example, fixedly attached or detachably or integrally attached; the connection may be direct or indirect via an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (10)
1. The device for measuring the circumference and the roundness of the tire blank is characterized by comprising a frame, a tire blank fixing group, a PLC, a linear reciprocating mechanism, a measuring roller and an encoder; the frame provides a mounting foundation, the tire blank fixing group comprises a rotating shaft, a telescopic arm and a supporting block, one end of the rotating shaft is connected with an output shaft of the driving mechanism, the telescopic arm is arranged radially on the periphery of the rotating shaft, the supporting block is arranged at the tail end of the telescopic arm, the outer surface of the supporting block is a cylindrical surface, all the supporting blocks form a tire blank sleeve, when the telescopic arm is completely contracted, the size of the tire blank sleeve formed by the supporting block is allowed to be sleeved into a tire blank, and when the telescopic arm is stretched to a certain extent, the tire blank sleeve formed by the supporting block supports and fixes the tire blank; one side of the green tire fixing group is fixedly provided with a linear reciprocating mechanism, the linear reciprocating mechanism is provided with a measuring roller, and the rotation center line of the green tire is parallel to the rotation center line of the measuring roller; the shaft end of the measuring roller is provided with an encoder, and the PLC is in communication connection with the encoder.
2. The measurement device of claim 1, wherein a generatrix of the cylindrical surface of the support block is parallel to the axis of the rotation shaft.
3. The measuring device of claim 1, wherein the measuring roller is further provided with a displacement sensor, and the displacement sensor is in communication connection with the PLC.
4. The measuring device according to claim 1, wherein an optical sensor is arranged on one side of the green tire fixing group, a photosensitive strip is arranged on the green tire, and the optical sensor is in communication connection with the PLC.
5. The measurement device of claim 1, wherein the outer surface of the support block is a flexible material.
6. The measuring device according to claim 1, wherein the rotation shaft is a stepped shaft, and a bearing is provided on the frame, the bearing supporting the stepped shaft to rotate.
7. The measuring device of claim 1, wherein the rolling surface of the measuring roller is a frosted surface.
8. The measuring device of claim 1, wherein the linear reciprocating mechanism is a linear module, the linear module comprises a guide rail and a slide block, a roller bracket is arranged on the slide block, and the measuring roller is arranged on the roller bracket.
9. The measurement device of claim 1, wherein the drive mechanism is a motor.
10. The measurement device of claim 4, wherein the optical sensor is an infrared optical sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321846018.4U CN220339313U (en) | 2023-07-14 | 2023-07-14 | Tyre blank circumference and roundness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321846018.4U CN220339313U (en) | 2023-07-14 | 2023-07-14 | Tyre blank circumference and roundness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220339313U true CN220339313U (en) | 2024-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321846018.4U Active CN220339313U (en) | 2023-07-14 | 2023-07-14 | Tyre blank circumference and roundness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220339313U (en) |
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2023
- 2023-07-14 CN CN202321846018.4U patent/CN220339313U/en active Active
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