CN114739269A - Device for acquiring tire outer contour deformation and model taking method - Google Patents

Abstract

The invention discloses a device for acquiring tire outer contour deformation and a shape taking method, relates to the technical field of tire contour mapping, solves the problem of high use cost of the conventional tire outer contour scanning device, improves mapping efficiency, reduces use cost, and has the following specific scheme: the tire shaping device comprises a support frame and a shaping device arranged on the support frame, wherein a first support shaft is detachably arranged on the support frame, and the first support shaft is horizontally arranged and used for supporting a tire; get the type ware and pass through the activity of second back shaft and set up on the support frame, the second back shaft is located first back shaft directly over and parallel with first back shaft, get the type ware and constitute by first fixed plate and second fixed plate, the fixed setting of first fixed plate level is on the second back shaft, and the both ends of first fixed plate rotate respectively and are equipped with a second fixed plate, equal activity is equipped with a plurality of thimbles side by side on first fixed plate and the second fixed plate.

Description

A device and method for obtaining the deformation of the outer contour of a tire

technical field

The invention relates to the technical field of tire contour surveying and mapping, in particular to a device and a shape taking method for obtaining the deformation of the tire outer contour.

Background technique

The statements herein merely provide background related to the present invention and do not necessarily constitute prior art.

As a rubber product with complex structure, all-steel radial tire is an important part of the vehicle. In order to better understand and master its design work, it is necessary to first understand the changing trend of its outer contour design.

The inventors found that scanners are generally used to obtain the outer contour of tire inflation. There are two common scanners, one is a hand-held outer contour scanning device, and the other is a machine-type outer contour scanning device. Although the two scanners can obtain the outer contour of the tire under different air pressures, the two products are relatively expensive, about 300,000 yuan for the handheld type and 500,000 yuan for the machine type, which greatly increases the cost of use. Not suitable.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a device for obtaining the deformation of the outer contour of the tire and a shape-taking method. The shape-taking device is composed of several side-by-side thimbles. The contour is changed, and the tire outer contour is expressed by the change of the side-by-side thimble ends, which greatly reduces the use cost and solves the problem of high use cost of the existing tire outer contour scanning device.

In order to achieve the above object, the present invention is realized by the following technical solutions:

In a first aspect, the present invention provides a device for obtaining the deformation of the outer contour of a tire, comprising a support frame and a shape extractor disposed on the support frame, wherein a first support shaft is detachably mounted on the support frame, and the first support shaft is detachably mounted on the support frame. The support shaft is arranged horizontally for supporting the tire; the profiler is movably arranged on the support frame through the second support shaft, the second support shaft is located directly above the first support shaft and is parallel to the first support shaft , the shape extractor is composed of a first fixed plate and a second fixed plate, the first fixed plate is horizontally fixed on the second support shaft, and the two ends of the first fixed plate are respectively rotated and provided with a second fixed plate , a plurality of side-by-side thimbles are movably arranged on the first fixing plate and the second fixing plate.

As a further implementation, the support frame is composed of a base and a support, the support is vertically fixed on the base, and the support is provided with a plurality of fixing parts at intervals along its length direction, and the first support shaft is connected to the fixing portion. Detachable connection.

As a further implementation, the base is provided with a hole, a flexible support block is fixed in the hole, and the top of the flexible support block is flush with the top of the base for supporting the bottom of the tire.

As a further implementation manner, the end of the second support shaft is fixedly provided with a support seat, the support seat is sleeved on the support frame, and the position of the support seat is fixed by a jacking bolt.

As a further implementation, one end of the second fixing plate is rotatably connected with the end of the adjacent first fixing plate through a pin shaft, and the overall shape extractor can be deformed and converted between a linear structure and a U-shaped structure.

As a further implementation, the first fixing plate and the second fixing plate are both double-layered plate structures, and the ejector pins are slidably arranged in the fixing plate by means of extrusion, between the ejector pins in the same fixing plate and between the ejector pins and the ejector pins. The fixed plates are in close contact.

As a further implementation manner, the lengths of the plurality of thimbles are the same, and the ends of the plurality of thimbles on the same fixing plate in a non-working state are flush.

As a further implementation manner, both ends of the thimble are flat.

As a further implementation manner, an air pressure tank is also included, and the air pressure tank is connected with the tire for inflating the tire.

In a second aspect, the present invention provides a shape-taking method, which utilizes the above-mentioned device for obtaining the deformation of the outer contour of the tire, as follows:

Step 1. Assemble and inflate the rim of the tire, and place the assembled tire on the first support shaft so that the bottom of the tire is in contact with the flexible support block;

Step 2. Move the second support shaft so that the profiler is located above the tire;

Step 3. Rotate the second fixing plates at both ends of the first fixing plate, and apply a uniform and horizontal force to the thimbles on the first fixing plate and the second fixing plate respectively, so that the ends of the thimbles on the first fixing plate and the second fixing plate are All parts are in close contact with the outer contour of the tire;

Step 4. After taking the shape, unfold the shaper to a horizontal state, and move the first support shaft to make the shaper separate from the tire;

Step 5. Re-deform the removed shape picker into a U-shaped structure, place the deformed shape picker on the drawing, and use a pencil to draw along the end of the ejector pin on the shape picker;

Step 6. Import the drawn graphics into the drawing software for restoration, and at the same time import the lines of the design outer contour into the drawing software to compare the lines;

Step 7. Change the air pressure in the tire, and repeat the operations from step 2 to step 6 to obtain the inflation deformation curve of the outer contour of the tire;

Step 8. Deflate the tire from the standard air pressure to 0kPa, and repeat the operations from step 2 to step 6 to obtain the curve of the deflation deformation of the outer contour of the tire.

The above-mentioned beneficial effects of the present invention are as follows:

(1) The shape picker of the present invention is composed of several side-by-side thimbles, and the end heights of different side-by-side thimbles can be changed according to the outer contour of the tire. description, and greatly reduce the cost of use, more convenient for popular use.

(2) The vertical spaced arrangement of the fixing portion of the present invention enables the first support shaft to be adjusted at different heights in the vertical direction of the bracket, thereby adapting to tires of different diameters, so that each type of tire can be placed in a no-load condition The load-bearing state ensures that the tire is not deformed by external force, and improves the accuracy of detection.

(3) The second fixing plate of the present invention is rotatably connected with the first fixing plate, so that the shape picker has the ability to deform, which not only facilitates the use of the shape picker, but also improves the adaptability of the shape picker, so that the shape picker can be Adapt to tires of different specifications.

(4) The first fixed plate and the second fixed plate of the present invention are both double-layered plate structures, and the thimble is installed inside the double-layered plate structure by means of extrusion, so that between the thimbles in the same fixed plate and between the thimble and the fixed plate They are in close contact with each other to ensure that the thimble can only slide under the push of external force, without the phenomenon of self-sliding, which avoids the movement of the thimble when the shape remover is deformed or removed, and ensures the accuracy of subsequent contour lines.

Description of drawings

The accompanying drawings forming a part of the present invention are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention.

1 is a schematic diagram of the overall structure of a device for obtaining the deformation of the outer contour of a tire according to one or more embodiments of the present invention;

2 is a schematic structural diagram of a shape picker according to one or more embodiments of the present invention;

3 is a schematic diagram of a hand-drawn line of the tire outer contour according to one or more embodiments of the present invention;

FIG. 4 is a schematic diagram of a tire outer contour contrasting line according to one or more embodiments of the present invention;

In the figure: the distance or size between each other is exaggerated in order to show the position of each part, the schematic diagram is for illustration only;

Among them, 1. the base; 2. the bracket; 3. the first support shaft; 4. the fixing part; 5. the second support shaft; 6. the support seat; board; 10, the second fixed board; 11, the thimble.

Line annotations in Figure 4:

Line 1: Design the outer contour;

Line 2: 930kPa air pressure outer contour;

Line 3: 100kPa air pressure outer contour.

Detailed ways

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

As described in the background art, a scanner is generally used to obtain the outer contour of tire inflation. There are two common scanners, one is a hand-held outer contour scanning device, and the other is a machine-type outer contour scanning device. Although the two scanners can obtain the outer contour of the tire under different air pressures, the two products are relatively expensive, about 300,000 yuan for the handheld type and 500,000 yuan for the machine type, which greatly increases the cost of use. Inappropriate problem, in order to solve the above technical problems, the present invention proposes a device and a method for obtaining the deformation of the outer contour of the tire.

Example 1

In a typical embodiment of the present invention, as shown in FIG. 1-FIG. 2, a device for obtaining the deformation of the outer contour of the tire is proposed, including a support frame, the support frame is composed of a base 1 and a support 2, and the support 2 moves on A shaper 7 is provided.

The bracket 2 is composed of two relatively vertically arranged steel pipes. The bottom of the bracket 2 is fixed with a base 1 to improve the support stability of the bracket 2. The bracket 2 and the base 1 can be fixedly connected by welding.

The two steel pipes of the bracket 2 are provided with a number of fixing parts 4 at intervals along their respective length directions, and the fixing parts 4 at the same position on the two steel pipes are at the same level for the installation of the first support shaft 3, so that the first support shaft 3 is installed. A support shaft 3 is level with respect to the ground.

In this embodiment, the fixing portion 4 is an annular structure, which is fixed on the bracket 2 by welding. Both ends of the first support shaft 3 are respectively inserted into the annular fixing portion 4 adjacent to it. Both ends of the first support shaft 3 are supported;

In other embodiments, the fixing portion 4 can also be in L-shaped, U-shaped and other structural forms, and the specific structural form is not limited here, as long as it can ensure that the first support shaft 3 can be detachably installed horizontally on the bracket 2 on.

The first support shaft 3 is used to support the tire. Specifically, when the outer contour of the tire is detected, the rim is assembled on the tire. Support, and then realize the support of the tire.

It should be noted that when the first support shaft 3 is installed, the height of the first support shaft 3 is determined according to the diameter of the tire. In the state of no load, the tire can be prevented from being deformed by external forces.

There are two first support shafts 3 , the two first support shafts 3 are located at the same level, and the two first support shafts 3 pass through the rim to improve the support stability of the tire.

In order to further avoid the influence of the support of the base 1 on the deformation of the outer contour of the tire, a hole is also opened on the base 1. When the tire is installed in place, the hole on the base 1 is located directly below the tire, and a flexible support block is fixedly installed in the hole. The top of the flexible support block is flush with the top of the base 1, and the bottom of the tire is supported by the flexible support block.

In this embodiment, the flexible support block is made of flexible materials such as rubber, and has the ability to deform.

The fixed parts 4 are vertically spaced, so that the first support shaft 3 can be adjusted to different heights in the vertical direction of the bracket 2, and then can be adapted to tires of different diameters, so that each type of tire can be placed under no load. The state ensures that the tire is not deformed by external force, and the accuracy of detection is improved.

A second support shaft 5 is also provided on the bracket 2 , and the second support shaft 5 is located above the first support shaft 3 , and is used for the fixed installation of the shape extractor 7 .

The second support shaft 5 is located between the two steel pipes of the bracket 2, and a support seat 6 is fixed at the end of the second support shaft 5. The support seat 6 is sleeved on the steel pipe of the bracket 2 adjacent to it, and can be vertically mounted. Move, so that the height of the extractor 7 can be adjusted according to actual needs; the support base 6 is also provided with a jacking bolt, when the support seat 6 is moved in place, the position can be fixed under the action of the jacking bolt.

It can be understood that, the second support shaft 5 may be provided with a support seat 6 at one end, or may be provided with a support seat 6 on both ends of the second support shaft 5. The specific setting method is selected according to the design requirements. Here Don't put too many restrictions.

As shown in FIG. 2 , the shape extractor 7 is composed of a first fixing plate 9 and a second fixing plate 10 . The first fixing plate 9 is fixedly arranged on the second supporting shaft 5 , and the length direction of the first fixing plate 9 is the same as that of the second fixing plate 9 . The longitudinal directions of the support shafts 5 are the same.

Two ends of the first fixing plate 9 are respectively provided with a second fixing plate 10, and one end of the second fixing plate 10 is connected with the end of the adjacent first fixing plate 9 through a pin shaft. The plate 9 and the second fixing plates 10 on both sides together form a linear structure; in the working state, the second fixing plates 10 on both sides of the first fixing plate 9 rotate, and the first fixing plate 9 and the second fixing plates on both sides of the first fixing plate 9 are fixed. The plates 10 together form a U-shaped structure, which is used to detect the profile of the top of the tire and the two sides of the tire.

The first fixing plate 9 and the second fixing plate 10 are movably provided with a plurality of thimbles 11 . The plurality of thimbles 11 on the first fixing plate 9 are perpendicular to the first fixing plate 9 , and the thimbles 11 are along the length of the first fixing plate 9 . Similarly, the plurality of ejector pins 11 on the second fixing plate 10 and the second fixing plate 10 are perpendicular to each other, and the ejector pins 11 are arranged side by side along the length direction of the second fixing plate 10 .

Specifically, the first fixing plate 9 and the second fixing plate 10 are both double-layered plate structures, the ejector pin 11 is slidably arranged inside the double-layered plate structure, and the ejector pin 11 is installed inside the double-layered plate structure by means of extrusion, so that the same fixed The thimbles 11 in the board and between the thimbles and the fixing plate are in close contact, so that the thimbles 11 can only slide under the push of external force, and the phenomenon of self-sliding will not occur.

It should be noted that all the thimbles 11 have the same length, and the ends of several thimbles on the same fixing plate are flush in the non-working state.

The arrangement in which the ejectors 11 are arranged side by side and the ejectors are in close contact in the same fixing plate enables the end of the ejector in contact with the tire to form a continuous curve, which is convenient for the description of subsequent contour curves.

For ease of understanding, in this embodiment, the end of the ejector pin 11 in contact with the tire is used as the top end, and the top and rear ends of the ejector pin 11 are both planar structures.

In practical application, the top of the ejector pin 11 is in contact with the tire, and after the tire is inflated and deformed, it will push the ejector pin 11 at the corresponding position to move, so that a curved surface can be formed by the movement of the top of several ejector pins 11 to reflect the deformation of the tire.

An air pressure tank 8 is also provided, and the air pressure tank 8 is mainly used to inflate the tire, and is used to carry out the change test of the outer contour of the tire under different air pressures.

Example 2

In a typical embodiment of the present invention, as shown in FIG. 3-FIG. 4, a shape taking method is proposed, which adopts the device for obtaining the deformation of the outer contour of the tire described in Embodiment 1, so as to obtain the deformation of the outer contour of the tire. Deform the contour line, the specific method is as follows:

Step 1. Assemble and inflate the rim of the tire, place the assembled tire on the first support shaft 3, and fix the first support shaft 3 on the bracket 2 horizontally, so that the bottom of the tire and the base 1 are flexible. The support block is in contact to ensure that the tire is in a state of no load;

Step 2, move the second support shaft 5 so that the first fixing plate 9 is located above the tire;

Step 3. Rotate the second fixing plate 10 at both ends of the first fixing plate 9 so that the second fixing plate 10 is perpendicular to the first fixing plate 9, and apply the thimbles 11 on the first fixing plate 9 and the second fixing plate 10 respectively. Uniform level of force, so that the ends of the ejector pins 11 on the first fixing plate 9 and the second fixing plate 10 are in close contact with the outer contour of the tire;

Step 4. After taking the shape, unfold the shaper 7 to a horizontal state, and move the first support shaft 3 to make the shaper 7 separate from the tire;

The specific process of flattening the pattern extractor 7 is to rotate the second fixing plate 10 so that the second fixing plates 10 at both ends of the first fixing plate 9 are on the same horizontal line with the first fixing plate 9 .

Step 5. Re-deform the removed shape picker 7 into a U-shaped structure, place the deformed shape picker 7 on the modular drawing, and use a pencil to draw along the end of the ejector pin 11 on the shape picker 7;

It should be noted that the pencil depicts one end of the ejector pin 11 in contact with the tire.

Step 6. Import the drawn graphics into the drawing software for restoration, and at the same time import the lines of the design outer contour into the drawing software to compare the lines;

In this embodiment, the drawing software adopts CAD, and specifies that the design outer contour is a white line, the outer contour corresponding to the inflation pressure is a red line, and the standard air pressure outer contour is a yellow line, and the change of the outer contour of the tire is determined by the comparison of the lines.

Step 7. Change the air pressure in the tire, and repeat the operations from step 2 to step 6 to obtain the inflation deformation curve of the outer contour of the tire;

Step 8. Deflate the tire from the standard air pressure to 0kPa, and repeat the operations from step 2 to step 6 to obtain the curve of the deflation deformation of the outer contour of the tire.

Using this method to obtain the outer contour of the tire under different air pressures, combined with the design contour, the changing trend of the sidewall arc and the crown arc can be clearly seen, and the deformation of the outer contour can be obtained, so as to guide the tire design and obtain the tire outer contour. 30min, compared with the traditional method, the efficiency is greatly improved.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A device for obtaining the deformation of the outer contour of a tire, characterized in that it comprises a support frame and a shape extractor arranged on the support frame, and a first support shaft is detachably mounted on the support frame, and the first support shaft is detachably mounted on the support frame. Horizontally arranged for supporting the tire; the profiler is movably arranged on the support frame through the second support shaft, the second support shaft is located just above the first support shaft and is parallel to the first support shaft, so The shape extractor is composed of a first fixing plate and a second fixing plate, the first fixing plate is horizontally fixed on the second supporting shaft, and the two ends of the first fixing plate are respectively rotated and provided with a second fixing plate, so the Both the first fixing plate and the second fixing plate are movably provided with a plurality of thimbles side by side. 2 . The device for obtaining the deformation of the outer contour of the tire according to claim 1 , wherein the support frame is composed of a base and a support, the support is vertically fixed on the base, and the support is arranged along the base. 3 . A plurality of fixing parts are arranged at intervals in the longitudinal direction, and the first support shaft and the fixing parts are detachably connected. 3 . The device for obtaining the deformation of the outer contour of the tire according to claim 2 , wherein a hole is provided on the base, and a flexible support block is fixed in the hole, and the top of the flexible support block is connected to the top of the tire. 4 . The top of the base is flush for support to the bottom of the tire. 4 . The device for obtaining the deformation of the outer contour of the tire according to claim 1 , wherein the end of the second support shaft is fixedly provided with a support seat, and the support seat is sleeved on the support frame, so that the The position of the support seat is fixed by tightening the bolts. 5. A device for obtaining the deformation of the outer contour of a tire according to claim 1, wherein one end of the second fixing plate is rotatably connected with the end of the adjacent first fixing plate through a pin shaft, and the shape extractor The whole can be deformed and converted between the linear structure and the U-shaped structure. 6 . The device for obtaining the deformation of the outer contour of a tire according to claim 1 , wherein the first fixing plate and the second fixing plate are both double-layer plate structures, and the ejector pin slides by means of extrusion. 7 . It is arranged in the fixing plate, and the thimbles in the same fixing plate and the thimbles and the fixing plate are in close contact. 7 . The device for obtaining the deformation of the outer contour of a tire according to claim 1 , wherein the lengths of the plurality of thimbles are the same, and the ends of the plurality of thimbles on the same fixing plate in a non-working state are flush. 8 . 8 . The device for obtaining the deformation of the outer contour of a tire according to claim 1 , wherein both ends of the thimble are flat. 9 . 9 . The device for obtaining the deformation of the outer contour of the tire according to claim 1 , further comprising an air pressure tank, the air pressure tank is connected to the tire and used to inflate the tire. 10 . 10. A type-taking method, characterized in that, the device for obtaining the deformation of the outer contour of the tire as described in any one of claims 1-9 is utilized, and the details are as follows: Step 1. Assemble and inflate the rim of the tire, and place the assembled tire on the first support shaft so that the bottom of the tire is in contact with the flexible support block; Step 2. Move the second support shaft so that the profiler is located above the tire; Step 3. Rotate the second fixing plates at both ends of the first fixing plate, and apply a uniform and horizontal force to the thimbles on the first fixing plate and the second fixing plate respectively, so that the ends of the thimbles on the first fixing plate and the second fixing plate are All parts are in close contact with the outer contour of the tire; Step 4. After taking the shape, unfold the shaper to a horizontal state, and move the first support shaft to make the shaper separate from the tire; Step 5. Re-deform the removed shape picker into a U-shaped structure, place the deformed shape picker on the drawing, and use a pencil to draw along the end of the ejector pin on the shape picker; Step 6. Import the drawn graphics into the drawing software for restoration, and at the same time import the lines of the design outer contour into the drawing software to compare the lines; Step 7. Change the air pressure in the tire, and repeat the operations from step 2 to step 6 to obtain the inflation deformation curve of the outer contour of the tire; Step 8. Deflate the tire from the standard air pressure to 0kPa, and repeat the operations from step 2 to step 6 to obtain the curve of the deflation deformation of the outer contour of the tire.

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