CN117261311B - Preloading real-time adjustment device and control method thereof - Google Patents

Abstract

The invention discloses a preload real-time adjustment device and its control method, which belongs to the technical field of tire molds and vulcanizers. The preload real-time adjustment device includes a guide ring and an installation ring; the force application component causes interaction between the guide ring and the installation ring. force and has a gap; the distance detection component measures the distance between the guide ring and the installation ring; the controller is connected to the force application component and the distance detection component respectively; the control method can adjust the mutual interaction generated by the force application component according to the distance data measured by the distance detection component The size of the force ensures that the distance data is consistent with the preset data; the controller of the present invention adjusts the size of the interaction force generated by the force application component located between the guide ring and the installation ring based on the distance data measured by the distance detection component, so that Maintain an appropriate distance between the guide ring and the mounting ring to ensure that the tire mold always maintains a stable preload height during the vulcanization process and under different conditions, and the preload will not be too large or too small.

Description

Preloading real-time adjustment device and control method thereof

Technical field

The invention relates to the technical fields of tire molds and vulcanizers, and in particular to a preload real-time adjustment device and a control method thereof.

Background technique

During the vulcanization process of the tire mold, the internal pressure of the cavity will exert outward pressure on the guide ring, causing the guide ring to elastically deform. In order to offset the impact of the elastic deformation of the guide ring on the pattern block mold clamping force, at a specific pressure , a suitable height difference can be maintained between the upper end surface of the guide ring and the upper end surface of the upper cover. This height difference is the preload. The value of this height difference can be a positive value or a negative value.

At this stage, the conventional method of adjusting the preload is as follows: based on production experience, the manufacturer uses a specific pressure before the tire mold leaves the factory to maintain a specific height difference between the mounting ring and the upper cover, and when the tire mold is shipped Adjustment gaskets of different thicknesses are provided. The adjustment gaskets are placed between the mounting ring and the guide ring. The number and thickness of the adjustment gaskets are adjusted according to whether rubber edges appear on the tire during the actual vulcanization process to suit different sizes, materials, and vulcanizing machines. Different preload heights required under conditions such as pressure.

Preload that is too large or too small will have an adverse effect on the appearance and quality of the tire; when the preload is too large, after the tire mold is completely closed, the upper hot plate and the upper cover are not in full contact. When the capsule inside the tire mold is filled, When pressed, the upper cover and upper side plate will float, and steps will appear on the side of the tire; when the preload is too small, the internal pressure will cause the elastic deformation of the guide ring to not be completely offset, and the circumferential and vertical seams of the tire mold will appear. The situation of rubber running.

According to current research, there are many factors that affect the preload height, such as the material of the guide ring, vulcanization temperature, pressure, processing error, vulcanizer model and plastic deformation caused by long-term use, etc., and these factors cannot be accurately calculated. Or simulation, only approximate on-site adjustments can be made based on the vulcanization effect in actual production; on-site adjustments require shutting down and disassembling the tire mold, which will cause a waste of energy, tire materials, time, labor, etc., and the preloading situation after on-site adjustment It is also impossible to conduct real-time tracking and monitoring, which has become a major problem plaguing the tire mold industry.

Therefore, it is urgent to design and develop a real-time preload adjustment device and its control method that can monitor and adjust the preload height in real time, without the preload being too large or too small, and without the need to stop the machine and disassemble the tire mold. a problem solved.

Contents of the invention

To solve the problems existing in the prior art, the present invention provides a preload real-time adjustment device and its control method. The controller can adjust the force-applying component located between the guide ring and the installation ring according to the distance data measured by the distance detection component. The size of the interaction force keeps the appropriate distance between the guide ring and the mounting ring, ensuring that the tire mold always maintains a stable preload height during the vulcanization process and under different conditions, and the preload will not be too large or too small. situation, improving the yield rate of tires.

In order to achieve the above objects, the technical solutions adopted by the present invention are as follows:

On the one hand, the present invention provides a preloading real-time adjustment device, including:

guide and mounting rings;

A force-applying component, the force-applying component is disposed between the guide ring and the mounting ring; the force-applying component generates an interaction force between the guide ring and the mounting ring, and the interaction force Provide a gap between the guide ring and the mounting ring;

a distance detection component, the distance detection component is used to measure the distance between the guide ring and the mounting ring;

A controller, which is connected to the force applying component and the distance detecting component respectively.

As a preferred technical solution, it also includes a pressure detection component, the pressure detection component is used to measure the magnitude of the interaction force, and the pressure detection component is connected to the controller.

As a preferred technical solution, the controller is set to a PLC or a single-chip microcomputer;

And/or, the distance detection component is set as a distance sensor;

And/or, the pressure detection component is configured as a pressure sensor, and the pressure sensor is provided between the guide ring and the force-applying component and/or between the installation ring and the force-applying component;

And/or, there are multiple force-applying components, and the plurality of force-applying components are evenly distributed along the circumferential direction; the pressure detection components correspond to the force-applying components one-to-one.

As a preferred technical solution, a connecting screw is provided between the guide ring and the mounting ring, and the connecting screw has a first shoulder and a second shoulder; the mounting ring is provided with a countersunk hole, The guide ring is provided with a threaded hole, and the connecting screw passes through the counterbore and is threadedly connected to the threaded hole; the first shoulder abuts the guide ring, and the second shoulder is in contact with the guide ring. There is a gap between the step surfaces of the counterbore.

As a preferred technical solution, the guide ring is provided with multiple tread molds, and the tread mold includes a slide block and a pattern block; the guide ring and the slide block form a wedge mechanism;

An upper sidewall mold is provided above the side of the pattern block, and a lower sidewall mold is provided below the side of the pattern block;

An upper pressure plate is provided above the upper side mold, the mounting ring is fixedly connected to the upper pressure plate, and the upper side mold is connected to a telescopic mechanism that passes through the upper pressure plate;

The lower sidewall mold is arranged on the base.

As a preferred technical solution, there are several distance detection components, and several distance detection components are provided inside the guide ring and the installation ring and/or outside the guide ring and the installation ring.

As a preferred technical solution, the guide ring and/or the mounting ring are provided with a placement groove, and at least part of the force-applying component is located in the placement groove.

As a preferred technical solution, the force-applying component is set as a hydraulic cylinder or a cylinder;

Alternatively, the force-applying component includes a plunger, which is embedded in the placement groove; a driving source is connected to the cavity formed by the plunger and the placement groove, and the driving source is located in the guide ring. and the outside of the mounting ring.

As a preferred technical solution, several sealing rings are embedded between the plunger and the placement groove;

And/or, the driving source is set as a hydraulic station or a pneumatic station.

In a second aspect, the present invention provides a control method, applied to the aforementioned preload real-time adjustment device, including the following steps:

S1: The controller reads the distance data measured by the distance detection component, and compares the distance data with preset data;

S2: If the distance data is consistent with the preset data, the controller controls the force-applying component to keep the interaction force generated unchanged; when the present invention has the pressure detection component, the control The device reads the pressure information measured by the pressure detection component and determines whether the pressure information is within the preset pressure range; if the pressure information is within the preset pressure range, normal operation is maintained; if the pressure information exceeds Preset pressure range, the controller sends a reminder signal;

S3: When the distance data is less than the preset data, the controller controls the force-applying component to increase the interaction force generated by it; when the distance data is greater than the preset data, the controller controls The force-applying component reduces the interaction force generated by it; until the distance data is consistent with the preset data.

The beneficial effects of the present invention are as follows:

1. The controller of the present invention compares the distance data measured by the distance detection component with the preset data, and adjusts the size of the interaction force generated by the force application component located between the guide ring and the installation ring, so that the distance between the guide ring and the installation ring The distance is consistent with the preset data, ensuring that the tire mold always maintains a stable preload height during the vulcanization process and under different conditions. The preload will not be too large or too small, and the appearance of the tire caused by changes in preload will be reduced. and performance defects, improving the yield rate of tires and enabling the production of higher-performance tires.

2. When the preloading height needs to be adjusted, the present invention only needs to change the interaction force generated by the force-applying component. There is no need to stop the machine and disassemble the tire mold, and there will be no idle equipment and waste of artificial materials.

3. The numerical value of the preload height of the present invention is no longer linked to the tire mold size, specification, service life and other factors. The tire mold can be easily adjusted to the best state by simply adjusting the preset data in the controller. The applicable scope Wider.

4. The invention has a simple structure, convenient installation and replacement, low failure rate, and convenient maintenance. It is suitable for most ordinary vulcanizing machines and has a wider scope of application.

5. The components in the present invention can be used universally on tire molds, which facilitates mass production and processing.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of an embodiment of the preload real-time adjustment device of the present invention;

Figure 2 is a schematic structural diagram of the guide ring in Figure 1;

Figure 3 is a schematic structural diagram of the connecting screw;

Figure 4 is an enlarged view of area A in Figure 3;

Figure 5 is a schematic diagram of the overall structure of the second embodiment of the preload real-time adjustment device of the present invention.

In the picture: 1-guide ring, 2-installation ring, 3-force application component, 4-distance detection component, 5-controller, 6-pressure detection component, 7-placement groove, 8-driving source, 9-sealing ring , 10-Slider, 11-Tread block, 12-Upper sidewall mold, 13-Lower sidewall mold, 14-Upper pressure plate, 15-Base, 16-Connecting screw, 17-First shoulder, 18-Second Shaft shoulder, 19-counterbore, 20-threaded hole.

Detailed ways

In order to facilitate understanding by those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

In a first aspect, the present invention provides a preloading real-time adjustment device;

Embodiment 1

Please refer to Figures 1 and 2, which is an embodiment of a preload real-time adjustment device provided by the present invention, including: a guide ring 1 and a mounting ring 2; both the guide ring 1 and the mounting ring 2 are provided with placement grooves 7; The force-applying component 3 between the ring 1 and the mounting ring 2 is a hydraulic cylinder or a cylinder. The two ends of the hydraulic cylinder or the cylinder are respectively in contact with the bottom surfaces of the two placement grooves 7; when the hydraulic cylinder or the cylinder is expanded and contracted, it can be used. An interaction force is generated between the guide ring 1 and the installation ring 2. Under the action of the interaction force, a gap can be formed between the guide ring 1 and the installation ring 2; the distance detection component 4 is used to measure the guide ring 1 and the installation ring 2. The distance data is the gap width between the guide ring 1 and the installation ring 2. The preload height can be changed by adjusting the gap width between the guide ring 1 and the installation ring 2; the controller 5 can change the preload height according to the distance. Detect the distance data measured by component 4, adjust the size of the interaction force generated by the force application component 3 between the guide ring 1 and the installation ring 2, and maintain an appropriate distance between the guide ring 1 and the installation ring 2, which can ensure The tire mold always maintains a stable preload height during the vulcanization process and under different conditions.

In other embodiments, the placement groove 7 can also be provided only on the guide ring 1 or the mounting ring 2. At this time, one end of the hydraulic cylinder or the cylinder is in contact with the bottom surface of the placement groove 7, and the other end extends from the placement groove 7. , and contacts the surface of the mounting ring 2 or the guide ring 1 without the placement groove 7, which can also generate an interaction force between the guide ring 1 and the mounting ring 2.

It should be noted that the circumferential direction in the present invention is based on the axis of the guide ring 1 and the mounting ring 2 .

For explanation, please refer to Figure 1. There are multiple tread molds on the guide ring 1, and the multiple tread molds are evenly distributed in the circumferential direction; the tread mold includes a slider 10 and a pattern block 11, and the pattern block 11 is fixed on the slider. 10; there is a matching inclined surface between the guide ring 1 and the slider 10, and the slider 10 and the guide ring 1 are slidingly connected to form a wedge mechanism; an upper sidewall mold 12 is provided above the tread block 11, and the tread block 11 is provided with an upper side mold 12. A lower sidewall mold 13 is provided below the side of 11. The tread mold, upper sidewall mold 12 and lower sidewall mold 13 form the cavity of the vulcanized tire; an upper pressure plate 14 is provided above the upper sidewall mold 12, and a mounting ring 2 It is fixedly connected with the upper pressure plate 14. The upper pressure plate 14 is connected with the vulcanizer. The vulcanizer exerts a mold closing force through the upper pressure plate 14; the upper sidewall mold 12 is connected with a telescopic mechanism that passes through the upper pressure plate 14. The telescopic mechanism can drive the upper sidewall mold. 12 lifts; the lower sidewall mold 13 is arranged on the base 15, and the base 15 is used to support the overall tire mold.

In this embodiment, please refer to Figure 1. The present invention also includes a pressure detection component 6. The pressure detection component 6 is provided between the guide ring 1 and the force application component 3 and between the installation ring 2 and the force application component 3. The pressure detection component 6 Component 6 can measure the magnitude of the interaction force between guide ring 1 and mounting ring 2; controller 5 is connected to pressure detection component 6, and controller 5 can receive pressure information measured by pressure detection component 6; in other embodiments, The pressure detection component 6 may also be provided only between the guide ring 1 and the force applying component 3 or between the mounting ring 2 and the force applying component 3, so long as the interaction force can be measured accurately.

It should be noted that the controller 5 is preferably a PLC or a single chip microcomputer; the distance detection component 4 is preferably a distance sensor; and the pressure detection component 6 is preferably a pressure sensor.

In this embodiment, please refer to Figures 2-4. The guide ring 1 and the mounting ring 2 are connected through a connecting screw 16; the connecting screw 16 has a first shoulder 17 and a second shoulder 18; the mounting ring 2 has A countersunk hole 19 is provided, and the guide ring 1 is provided with a threaded hole 20. The connecting screw 16 passes through the countersunk hole 19 and is threadedly connected to the threaded hole 20; the first shoulder 17 abuts the guide ring 1 and can position the connecting screw 16 position; there is an interval between the second shoulder 18 and the step surface of the countersunk hole 19. The width of the interval is equal to the preset data. The connecting screw 16 can play a guiding and limiting role to ensure that the installation ring 2 is in the force-applying assembly. When moving relative to the guide ring 1 under the action of 3, the maximum distance between the two will not exceed the preset data; specifically, connecting screws 16 are provided on both sides of each force-applying component 3, which can play a more important role. Good guiding and limiting effect.

In this embodiment, please refer to Figure 2. There should be multiple force-applying components 3. The multiple force-applying components 3 are evenly distributed along the circumferential direction and can exert a uniform interaction force between the guide ring 1 and the mounting ring 2. , so that the width of the circumferential gap between the guide ring 1 and the installation ring 2 remains consistent; accordingly, the pressure detection component 6 corresponds to the force application component 3 one-to-one, and each pressure detection component 6 is used to detect the corresponding force application component. The interaction force generated by the force component 3; specifically, the number of force-applying components 3 is set to 4-12; more preferably, the number of force-applying components 3 is set to 8 or the same number as the number of divisions of the slider 10 of the tire mold, and further , the force-applying component 3 is preferably distributed in the middle of the circumferential direction of the slider 10 so that the mold clamping force of the tire mold is evenly distributed.

On the basis of the foregoing embodiment, please refer to Figure 1. There are several distance detection components 4. The plurality of distance detection components 4 are divided into two groups. One group of distance detection components 4 is located inside the guide ring 1 and the installation ring 2. One set of distance detection components 4 has size and high temperature resistance requirements; another set of distance detection components 4 is located outside the guide ring 1 and the mounting ring 2, and this distance detection component 4 does not need size and high temperature resistance requirements; two sets of distance detection components 4 The measured distance data can be used as the adjustment basis and calibration comparison of the controller 5 respectively; in other embodiments, several distance detection components 4 can also be all located inside the guide ring 1 and the installation ring 2 or located in the guide ring 1 and the installation ring. 2 Externally, the distance data between the guide ring 1 and the mounting ring 2 can be accurately measured.

Embodiment 2

Please refer to Figure 5. The main difference between this embodiment and Embodiment 1 is that: the force-applying component 3 includes a plunger, and the plunger is embedded in the placement slot 7; the cavity formed by the plunger and the placement slot 7 is connected to a driving source 8. The driving source 8 is located outside the guide ring 1 and the mounting ring 2. The driving source 8 can drive the plunger to move by adjusting the pressure in the cavity formed by the plunger and the placement groove 7, thereby adjusting the gap between the guide ring 1 and the mounting ring 2. Interaction.

In this embodiment, please refer to Figure 5. Several sealing rings 9 should be embedded between the plunger and the placement groove 7. The sealing rings 9 can improve the sealing between the plunger and the placement groove 7 and ensure the pressure in the cavity. When changes occur, the plunger can move with it.

It should be noted that the driving source 8 is preferably set as a hydraulic station or a pneumatic station, and the controller 5 can adjust the pressure value in the cavity through the driving source 8 .

In a second aspect, the present invention provides a control method, applied to the aforementioned preload real-time adjustment device, including the following steps:

S1: The controller 5 reads the distance data measured by the distance detection component 4, and compares the distance data with the preset data;

S2: If the distance data is consistent with the preset data, the controller 5 controls the force application component 3 to keep the interaction force generated unchanged; when the present invention has a pressure detection component 6, the controller 5 reads the measurement of the pressure detection component 6 pressure information, and determine whether the pressure information is within the preset pressure range; if the pressure information is within the preset pressure range, normal operation is maintained; if the pressure information exceeds the preset pressure range, the controller 5 sends a reminder signal to allow the staff to It can detect and adjust immediately to eliminate safety hazards;

S3: When the distance data is less than the preset data, the controller 5 controls the force application component 3 to increase the interaction force it generates; when the distance data is greater than the preset data, the controller 5 controls the force application component 3 to reduce the interaction force it generates. Interaction force; until the distance data is consistent with the preset data.

It should be noted that both the preset data and the preset pressure range can be built into the controller 5 or input into the controller 5 by the user.

It should be noted that during the opening and closing process of the tire mold, as the mold clamping force gradually decreases or increases, the controller 5 controls the force application component 3 to cause the interaction force generated by the tire mold to decrease or increase accordingly. , which can effectively ensure that the preload height is constant and there will be no problem of cylinder explosion.

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 modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. The preload real-time adjustment apparatus is characterized by comprising:

a guide ring (1) and a mounting ring (2);

the force application component (3) is arranged between the guide ring (1) and the mounting ring (2); the force application assembly (3) generates interaction force between the guide ring (1) and the mounting ring (2), and the interaction force enables a gap to be formed between the guide ring (1) and the mounting ring (2);

a distance detection assembly (4), the distance detection assembly (4) being used for measuring the distance between the guide ring (1) and the mounting ring (2);

and the controller (5) is respectively connected with the force application assembly (3) and the distance detection assembly (4).

2. The preload real-time adjustment apparatus according to claim 1, further comprising a pressure detection assembly (6), the pressure detection assembly (6) being adapted to measure the magnitude of the interaction force; the pressure detection assembly (6) is connected with the controller (5).

3. The preload real-time adjustment apparatus according to claim 2, wherein the controller (5) is provided as a PLC or a single chip microcomputer;

and/or the distance detection component (4) is set as a distance sensor;

and/or the pressure detection component (6) is provided with a pressure sensor, and the pressure sensor is arranged between the guide ring (1) and the force application component (3) and/or between the mounting ring (2) and the force application component (3);

and/or a plurality of force application components (3) are arranged, and the force application components (3) are uniformly distributed along the circumferential direction; the pressure detection components (6) are in one-to-one correspondence with the force application components (3).

4. The pre-loading real-time adjustment device according to claim 1, characterized in that a connecting screw (16) is arranged between the guide ring (1) and the mounting ring (2), and a first shaft shoulder (17) and a second shaft shoulder (18) are arranged on the connecting screw (16); a counter bore (19) is formed in the mounting ring (2), a threaded hole (20) is formed in the guide ring (1), and the connecting screw (16) penetrates through the counter bore (19) and is in threaded connection with the threaded hole (20); the first shaft shoulder (17) is abutted with the guide ring (1), and a gap is reserved between the second shaft shoulder (18) and the step surface of the counter bore (19).

5. The preload real-time adjustment apparatus according to claim 1, wherein the guide ring (1) is provided with a plurality of tread patterns comprising a slider (10) and a block (11); the guide ring (1) and the sliding block (10) form a wedge mechanism;

an upper sidewall mold (12) is arranged above the side of the pattern block (11), and a lower sidewall mold (13) is arranged below the side of the pattern block (11);

an upper pressing plate (14) is arranged above the upper sidewall die (12), the mounting ring (2) is fixedly connected with the upper pressing plate (14), and the upper sidewall die (12) is connected with a telescopic mechanism penetrating through the upper pressing plate (14);

the lower tire side die (13) is arranged on the base (15).

6. The preload real-time adjustment apparatus according to claim 1, wherein the number of distance detection assemblies (4) is several, and the number of distance detection assemblies (4) is provided inside the guide ring (1) and the mounting ring (2) and/or outside the guide ring (1) and the mounting ring (2).

7. The pre-load real-time adjustment device according to claim 1, characterized in that the guide ring (1) and/or the mounting ring (2) are provided with a placement groove (7), at least part of the force application assembly (3) being arranged in the placement groove (7).

8. The preload real-time adjustment apparatus according to claim 7, wherein the force application assembly (3) is provided as a hydraulic cylinder or air cylinder;

alternatively, the force application assembly (3) comprises a plunger, and the plunger is embedded in the placing groove (7); the cavity formed by the plunger and the placing groove (7) is connected with a driving source (8), and the driving source (8) is positioned outside the guide ring (1) and the mounting ring (2).

9. The preload real-time adjustment apparatus according to claim 8, wherein a plurality of sealing rings (9) are embedded between the plunger and the placement groove (7);

and/or the driving source (8) is set as a hydraulic station or a pneumatic station.

10. Control method, applied to a preloaded real-time adjustment device according to any of claims 1-9, with a pressure detection assembly (6), characterized in that it comprises the following steps:

s1: the controller (5) reads the distance data measured by the distance detection assembly (4) and compares the distance data with preset data;

s2: if the distance data is consistent with preset data, the controller (5) controls the force application assembly (3) to keep the interaction force generated by the force application assembly unchanged; the controller (5) reads the pressure information measured by the pressure detection assembly (6) and judges whether the pressure information is in a preset pressure range or not; if the pressure information is within the preset pressure range, the normal operation is maintained; if the pressure information exceeds a preset pressure range, the controller (5) sends out a reminding signal;

s3: when the distance data is smaller than preset data, the controller (5) controls the force application assembly (3) to increase the generated interaction force; when the distance data is larger than preset data, the controller controls the force application assembly (3) to reduce the interaction force generated by the force application assembly; until the distance data is consistent with preset data.