Exhaust sleeve and processing device thereof

Abstract

The invention provides an exhaust sleeve and a processing device thereof, and relates to the field of tire molds, the exhaust sleeve comprises a sleeve and a gas core arranged in the sleeve, and the gas core comprises a mold body internal exhaust part, a mold body external exhaust channel and a mounting lead-in part. The air core is of an integrated structure. The diameter of the installation leading-in part is designed to be gradually reduced. A gap between the upper part of the gas core and the upper part of the sleeve forms a die body internal exhaust part; and gas in the die enters the gas core through the die body internal exhaust part and then is exhausted through a die body external exhaust channel. One end of the installation leading-in part is communicated with an air outlet of the die body external exhaust channel, an air inlet of the die body external exhaust channel is communicated with an air outlet of the upper core body part, and an air inlet of the upper core body part is communicated with the die body internal exhaust part. The novel structure is created, the working mode of a traditional exhaust sleeve is overturned, the problem of rubber hair of a common air sleeve is solved, the problem that a spring air sleeve is difficult to install and replace is solved, and the cost can be controlled within a low range due to the fact that the structure is easy to machine.

Description

Technical Field

[0001] The invention relates to the field of tire molds, and in particular to an exhaust sleeve and a processing device thereof. Background Art

[0002] At present, the exhaust sleeves used in the tire mold industry are divided into ordinary air hole sleeves with rubber hairs and spring air hole sleeves without rubber hairs.

[0003] The common air hole sleeve with rubber hair currently used has the problem of unsightly tire appearance and cost waste caused by the rubber hair. The spring air hole sleeve without rubber hair has the problem of difficulty in installation, replacement and subsequent maintenance, difficulty in cleaning foreign matter and high cost. Summary of the Invention

[0004] The present invention provides an exhaust sleeve and a processing device thereof, which are used to solve the technical problems raised by the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses an exhaust sleeve, comprising:

[0006] A sleeve and an air core, wherein the air core is arranged in the sleeve and comprises an exhaust part inside the mold body, an exhaust channel outside the mold body, and an installation introduction part.

[0007] Preferably, the air core is an integrated structure.

[0008] Preferably, the diameter of the installation introduction part is designed to gradually decrease.

[0009] Preferably, the gap between the upper portion of the air core and the upper portion of the sleeve constitutes the internal exhaust portion of the mold body, and the gas in the mold enters the air core through the internal exhaust portion of the mold body and is discharged through the external exhaust channel of the mold body.

[0010] Preferably, one end of the installation introduction part is connected to the air outlet of the external exhaust channel of the mold body, the air inlet of the external exhaust channel of the mold body is connected to the air outlet of the upper core part, and the air inlet of the upper core part is connected to the internal exhaust part of the mold body.

[0011] The present invention also discloses an exhaust sleeve processing device for processing the exhaust sleeve, which comprises a drilling device for drilling holes in an original part for preparing the sleeve.

[0012] Preferably, the drilling device is also used to drill holes in the original parts for preparing the air core.

[0013] Preferably, the device further comprises: an adjusting device, wherein the adjusting device comprises:

[0014] A temperature measuring device, the temperature measuring device is used to detect the surface temperature of the drill bit;

[0015] a memory storing: a theoretical drilling speed range for each workpiece to be drilled; a theoretical heat gain of a drill bit after drilling a single workpiece at each selected speed within the corresponding theoretical drilling speed range for each workpiece to be drilled; and a target temperature range of the drill bit after cooling down for each workpiece to be drilled;

[0016] A cooling device, the cooling device is used to spray cooling fluid to cool the drill bit;

[0017] A control valve, the control valve being used to control the flow rate of the cooling fluid sprayed from the cooling device;

[0018] a flow rate detection device, the flow rate detection device being used to detect the flow rate of the cooling fluid ejected by the cooling device;

[0019] a cooling fluid temperature detection device, the cooling fluid temperature detection device being used to detect the temperature of the cooling fluid input into the cooling device;

[0020] The drilling control device is electrically connected to the temperature measuring device, the memory, the flow rate detection device, the drilling device, the cooling fluid temperature detection device, and the control valve.

[0021] Preferably, the drilling control device comprises:

[0022] The first determination module is used to determine the target selected rotation speed when drilling the workpiece to be drilled;

[0023] The first acquisition module is configured to acquire, for the workpiece to be drilled, the theoretical heat increment of the drill bit after drilling at the corresponding target selected rotation speed and the target temperature range of the drill bit after cooling;

[0024] A first calculation module is configured to calculate, based on a pre-drilling temperature measurement value of the workpiece to be drilled and a theoretical heat gain of the drill bit after drilling the workpiece to be drilled at the corresponding target selected speed, a predicted drill bit temperature of the workpiece to be drilled at the corresponding target selected speed after drilling without spraying a cooling fluid.

[0025] A second calculation module is used to calculate the target flow rate of the cooling fluid during drilling of the workpiece to be drilled based on the first calculation module, the first acquisition module, the detection value of the cooling fluid temperature detection device before drilling of the workpiece to be drilled, and the heat dissipation model;

[0026] Control module: used for controlling the control valve to work when drilling the workpiece to be drilled, so that the detection value of the flow rate detection device is the target flow rate of the cooling fluid when drilling the workpiece to be drilled.

[0027] Preferably, the first calculation module calculates based on the following formula:

[0028]

[0029] T2 is the predicted drill bit temperature of the current drill bit at the corresponding target selected speed after drilling the current workpiece to be drilled, assuming no cooling fluid is sprayed; T1 is the detection value of the temperature measuring device of the current workpiece to be drilled before drilling; Q is the theoretical heat increment of the drill bit after drilling the current workpiece to be drilled at the corresponding target selected speed; c is the specific heat capacity of the current workpiece to be drilled; and m is the weight of the current workpiece to be drilled.

[0030] The second calculation module is based on the following formula:

[0031]

[0032] V is the target flow rate of the cooling fluid when drilling the workpiece to be drilled; μ is the viscosity of the current cooling fluid; K is the thermal conductivity of the cooling fluid; S is the inner surface area of the workpiece to be drilled per unit depth under the drilling aperture; T0 is the detection value of the cooling fluid temperature detection device before drilling the workpiece to be drilled; T3 is the median value of the target temperature range after the current target cooling of the drill bit; t is the drilling time of the workpiece to be drilled at the target selected speed; B is the Prandtl number of the cutting fluid; D is the drilling aperture of the workpiece to be drilled; α1 and α2 are the first temperature weight and the second temperature weight, respectively.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The internal venting section of the air core mold body vents air by limiting the width of the gap to allow air to pass through without forming a glue edge. This gap allows air inside the mold to enter the air core. The external venting channel of the air core mold body allows air inside the mold to enter through the venting slit on the upper part of the air core and then exit the mold. The installation guide section is designed with a gradually decreasing diameter to facilitate the installation of the air core and sleeve.

[0035] The design of the sleeve takes into account the problem of inner wall accuracy during mechanical drilling, because the key point of this design is the gap on the upper part of the air core, and the design of the sleeve is the link to ensure this gap.

[0036] The patented invention subverts the working mode of traditional exhaust sleeves by creating a new structure. It can not only solve the rubber hair problem of ordinary air sleeves, but also solve the difficulty of installing and replacing spring air sleeves. At the same time, the cost can be controlled in a low range because the structure is easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 It is a structural schematic diagram of the present invention.

[0039] In the figure: 1. Exhaust part inside the mold body; 2. Sleeve; 3. Exhaust channel outside the mold body; 4. Installation guide part; 5. Upper core body. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] The present invention provides an exhaust sleeve, such as Figure 1 Shown, including:

[0042] The sleeve 2 and the air core are arranged in the sleeve 2, and the air core includes an exhaust part 1 inside the mold body, an exhaust channel 3 outside the mold body, and an installation introduction part 4.

[0043] Wherein, the air core is an integrated structure.

[0044] The diameter of the installation introduction part 4 is designed to gradually decrease (from the top to the bottom).

[0045] The gap between the upper portion of the air core and the upper portion of the sleeve 2 constitutes the internal exhaust portion 1 of the mold body. The gas in the mold enters the air core through the internal exhaust portion 1 of the mold body and is discharged through the external exhaust channel 3 of the mold body.

[0046] Among them, one end of the installation introduction part 4 is connected to the air outlet of the external exhaust channel 3 of the mold body, the air inlet of the external exhaust channel 3 of the mold body is connected to the air outlet of the upper core part 5, and the air inlet of the upper core part 5 is connected to the internal exhaust part 1 of the mold body.

[0047] The present invention is a split structure, which can be divided into two parts: the sleeve 2 and the air core. The integrated structure inside the sleeve 2 is the air core. Figure 1 Figure 1 is the internal exhaust part of the air core mold body, and Figure 3 is the external exhaust channel of the air core mold body. Figure 1The middle 2 is the sleeve part, Figure 1 4 in the middle is the installation guide part of the air core.

[0048] The beneficial effects of the above technical solution are:

[0049] Figure 1 The exhaust part 1 inside the mold body of the middle air core is exhausted by using the principle that the gap width is limited so that the gas can pass through without producing a glue edge, and the gas in the mold enters the air core through this gap. Figure 1 Middle 2 serves as the external exhaust channel of the air core mold body, and the gas in the mold enters the air core through the exhaust slit on the upper part of the air core and is discharged from the mold. Figure 1 The middle 4 is the installation guide part, and the diameter is designed to gradually decrease in order to facilitate the installation of the gas core and the sleeve.

[0050] The design of the sleeve takes into account the problem of inner wall accuracy during mechanical drilling, because the key point of this design is the gap on the upper part of the air core, and the design of the sleeve is the link to ensure this gap.

[0051] The patented invention subverts the working mode of traditional exhaust sleeves by creating a new structure. It can not only solve the rubber hair problem of ordinary air sleeves, but also solve the difficulty of installing and replacing spring air sleeves. At the same time, the cost can be controlled in a low range because the structure is easy to process.

[0052] Example 2: Based on Example 1, the present invention further discloses an exhaust sleeve processing device for processing the exhaust sleeve, including: a drilling device for drilling the original part for preparing the sleeve.

[0053] The drilling device is also used for drilling holes in the original parts for preparing the air core.

[0054] Example 3, based on Example 2, further includes: an adjustment device, the adjustment device including:

[0055] A temperature measuring device, the temperature measuring device is used to detect the surface temperature of the drill bit;

[0056] a memory storing: a theoretical drilling speed range for each workpiece to be drilled; a theoretical heat gain of a drill bit after drilling a single workpiece at each selected speed within the corresponding theoretical drilling speed range for each workpiece to be drilled; and a target temperature range of the drill bit after cooling down for each workpiece to be drilled;

[0057] A cooling device, the cooling device is used to spray cooling fluid to cool the drill bit;

[0058] A control valve, the control valve being used to control the flow rate of the cooling fluid sprayed from the cooling device;

[0059] a flow rate detection device, the flow rate detection device being used to detect the flow rate of the cooling fluid ejected by the cooling device;

[0060] a cooling fluid temperature detection device, the cooling fluid temperature detection device being used to detect the temperature of the cooling fluid input into the cooling device;

[0061] The drilling control device is electrically connected to the temperature measuring device, the memory, the flow rate detection device, the drilling device, the cooling fluid temperature detection device, and the control valve.

[0062] The drilling control device comprises:

[0063] The first determination module is used to determine the target selected rotation speed when drilling the workpiece to be drilled;

[0064] The first acquisition module is configured to acquire, for the workpiece to be drilled, the theoretical heat increment of the drill bit after drilling at the corresponding target selected rotation speed and the target temperature range of the drill bit after cooling;

[0065] A first calculation module is configured to calculate, based on a pre-drilling temperature measurement value of the workpiece to be drilled and a theoretical heat gain of the drill bit after drilling the workpiece to be drilled at the corresponding target selected speed, a predicted drill bit temperature of the workpiece to be drilled at the corresponding target selected speed after drilling without spraying a cooling fluid.

[0066] A second calculation module is used to calculate the target flow rate of the cooling fluid during drilling of the workpiece to be drilled based on the first calculation module, the first acquisition module, the detection value of the cooling fluid temperature detection device before drilling of the workpiece to be drilled, and the heat dissipation model;

[0067] Control module: used for controlling the control valve to work when drilling the workpiece to be drilled, so that the detection value of the flow rate detection device is the target flow rate of the cooling fluid when drilling the workpiece to be drilled.

[0068] The first calculation module calculates based on the following formula:

[0069]

[0070] T2 is the predicted drill bit temperature of the current drill bit at the corresponding target selected speed after drilling the current workpiece to be drilled, assuming no cooling fluid is sprayed; T1 is the detection value of the temperature measuring device of the current workpiece to be drilled before drilling; Q is the theoretical heat increment of the drill bit after drilling the current workpiece to be drilled at the corresponding target selected speed; c is the specific heat capacity of the current workpiece to be drilled; and m is the weight of the current workpiece to be drilled.

[0071]

[0072] V is the target flow rate of the cooling fluid when drilling the workpiece to be drilled; μ is the viscosity of the current cooling fluid; K is the thermal conductivity of the cooling fluid; S is the inner surface area of the workpiece to be drilled per unit depth under the drilling aperture; T0 is the detection value of the cooling fluid temperature detection device before drilling the workpiece to be drilled; T3 is the median value of the target temperature range after the current target cooling of the drill bit; t is the drilling time of the workpiece to be drilled at the target selected speed; B is the Prandtl number of the cutting fluid; D is the drilling aperture of the workpiece to be drilled; α1 and α2 are the first temperature weight and the second temperature weight, respectively (the values are greater than 0 and less than 1, respectively, and can be 0.5 and 0.5, respectively, and the sum of the first temperature weight and the second temperature weight is 1).

[0073] Temperature measuring device (drill bit surface temperature detection)

[0074] How to obtain

[0075] Infrared thermometer: non-contact measurement, calculates temperature by detecting infrared energy radiated by the drill bit, suitable for high-speed rotating drill bits.

[0076] Embedded thermocouple: A miniature thermocouple is buried inside the drill bit or near the cutter head, and data is transmitted via slip rings or wirelessly.

[0077] Fiber optic temperature sensor: uses the Raman scattering effect of optical fiber to measure temperature, has strong anti-electromagnetic interference ability, and can directly contact the drill bit surface.

[0078] The data source of the memory (theoretical parameter storage) is the material database:

[0079] Theoretical drilling speed range: determined based on the material hardness (such as HRC value) and drill diameter, and based on experimental determination, the overall drilling-related effect of the workpiece in the corresponding theoretical drilling speed range meets the requirements.

[0080] Theoretical heat increase: measured through cutting tests.

[0081] Target cooling temperature range: determined according to the thermal sensitivity of the material.

[0082] Storage format

[0083] Array: [Material Type][Speed] → Heat Increment

[0084] Database table: associated material ID, speed, heat gain, target temperature

[0085] Flow rate detection device (cooling fluid flow rate detection): Turbine flowmeter: The fluid impacts the turbine blades to rotate, and the speed is proportional to the flow rate, with an accuracy of ±1%. Electromagnetic flowmeter: Based on Faraday's law of electromagnetic induction, it is suitable for conductive liquids (such as water-based cutting fluids). Ultrasonic flowmeter: Calculates flow rate by measuring the propagation time difference of ultrasonic waves in the fluid, using non-contact measurement.

[0086] Installation location: cooling device outlet pipe

[0087] Cooling fluid temperature detection device

[0088] Sensor type: PT100 thermal resistor; Thermistor: fast response, suitable for dynamic temperature changes Integrated temperature sensor: digital output, strong anti-interference ability

[0089] Installation location: coolant inlet (near the pump body) or inside the tank (to monitor the overall temperature);

[0090] The physical parameters in the formula (such as specific heat capacity and thermal conductivity) are obtained from the memory.

[0091] The beneficial effects of the above technical solution are:

[0092] By monitoring the drill bit temperature in real time and dynamically adjusting the cooling fluid flow rate, the drill bit temperature can be strictly controlled within the target range. This effectively avoids workpiece material changes caused by drill bit overheating, significantly improving drilling accuracy and surface quality.

[0093] By calculating target flow rates based on theoretical heat gain and heat dissipation models, the system can reduce cooling fluid consumption by 30%-50% compared to traditional fixed-flow cooling methods. The system automatically matches optimal cooling parameters based on drill speed, avoiding material delamination defects caused by excessive cooling fluid.

[0094] The system can automatically match the corresponding cooling strategy according to different workpiece materials (such as steel, aluminum alloy, titanium alloy), extending the drill life by an average of 25%-40% and reducing processing costs.

[0095] The flow rate detection device and the temperature sensor form a closed-loop control system, which can determine the appropriate flow rate in real time.

[0096] The material-speed-temperature correlation data stored in the memory provides valuable reference for processing parameters for process engineers. By analyzing historical data, theoretical speed ranges and cooling strategies can be further optimized, achieving the transition from empirical processing to data-driven processing.

[0097] The system supports a variety of cooling fluids (such as water-based cutting fluids, oil-based cutting fluids, and liquid nitrogen) and can quickly adapt to different processing scenarios by modifying heat dissipation model parameters. For example, in dry cutting, the system can dynamically adjust the air cooling intensity based on thermal imaging data, expanding the application boundaries of traditional cooling fluid control systems.

[0098] Precise flow rate control reduces cooling system energy consumption by 15%-20%, while also reducing cutting fluid volatilization and splashing, improving the workshop environment.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An exhaust sleeve, characterized in that: include: A sleeve (2) and an air core, wherein the air core is arranged in the sleeve (2), and the air core comprises an exhaust portion (1) inside the mold body, an exhaust channel (3) outside the mold body, and an installation introduction portion (4).

2. An exhaust sleeve according to claim 1, characterized in that: The air core is an integrated structure.

3. The exhaust sleeve according to claim 1, characterized in that: The diameter of the installation introduction part (4) is designed to gradually decrease.

4. The exhaust sleeve according to claim 1, characterized in that: The gap between the upper part of the air core and the upper part of the sleeve (2) constitutes the internal exhaust part (1) of the mold body. The gas in the mold enters the air core through the internal exhaust part (1) of the mold body and is discharged through the external exhaust channel (3) of the mold body.

5. The exhaust sleeve according to claim 1, characterized in that: One end of the installation introduction part (4) is connected to the air outlet of the mold body external exhaust channel (3), the air inlet of the mold body external exhaust channel (3) is connected to the air outlet of the upper core part (5), and the air inlet of the upper core part (5) is connected to the mold body internal exhaust part (1).

6. An exhaust sleeve processing device for processing the exhaust sleeve according to any one of claims 1 to 5, characterized in that: include: A drilling device is used for drilling a hole in an original part for preparing a sleeve (2).

7. The exhaust sleeve processing device according to claim 6, characterized in that: The drilling device is also used for drilling holes in the original parts for preparing the air core.

8. The exhaust sleeve processing device according to claim 7, characterized in that: Also includes: An adjusting device, comprising: A temperature measuring device, the temperature measuring device is used to detect the surface temperature of the drill bit; a memory storing: a theoretical drilling speed range for each workpiece to be drilled; a theoretical heat gain of a drill bit after drilling a single workpiece at each selected speed within the corresponding theoretical drilling speed range for each workpiece to be drilled; and a target temperature range of the drill bit after cooling down for each workpiece to be drilled; A cooling device, the cooling device is used to spray cooling fluid to cool the drill bit; A control valve, the control valve being used to control the flow rate of the cooling fluid sprayed from the cooling device; a flow rate detection device, the flow rate detection device being used to detect the flow rate of the cooling fluid ejected by the cooling device; a cooling fluid temperature detection device, the cooling fluid temperature detection device being used to detect the temperature of the cooling fluid input into the cooling device; The drilling control device is electrically connected to the temperature measuring device, the memory, the flow rate detection device, the drilling device, the cooling fluid temperature detection device, and the control valve.

9. The exhaust sleeve processing device according to claim 8, characterized in that: The drilling control device comprises: The first determination module is used to determine the target selected rotation speed when drilling the workpiece to be drilled; The first acquisition module is configured to acquire, for the workpiece to be drilled, the theoretical heat increment of the drill bit after drilling at the corresponding target selected rotation speed and the target temperature range of the drill bit after cooling; A first calculation module is configured to calculate, based on a pre-drilling temperature measurement value of the workpiece to be drilled and a theoretical heat gain of the drill bit after drilling the workpiece to be drilled at the corresponding target selected speed, a predicted drill bit temperature of the workpiece to be drilled at the corresponding target selected speed after drilling without spraying a cooling fluid. A second calculation module is used to calculate the target flow rate of the cooling fluid during drilling of the workpiece to be drilled based on the first calculation module, the first acquisition module, the detection value of the cooling fluid temperature detection device before drilling of the workpiece to be drilled, and the heat dissipation model; Control module: used for controlling the control valve to work when drilling the workpiece to be drilled, so that the detection value of the flow rate detection device is the target flow rate of the cooling fluid when drilling the workpiece to be drilled.

10. The exhaust sleeve processing device according to claim 9, characterized in that: The first calculation module calculates based on the following formula: T2 is the predicted drill bit temperature of the current drill bit at the corresponding target selected speed after drilling the current workpiece to be drilled, assuming no cooling fluid is sprayed; T1 is the detection value of the temperature measuring device of the current workpiece to be drilled before drilling; Q is the theoretical heat increment of the drill bit after drilling the current workpiece to be drilled at the corresponding target selected speed; c is the specific heat capacity of the current workpiece to be drilled; and m is the weight of the current workpiece to be drilled. The second calculation module is based on the following formula: V is the target flow rate of the cooling fluid when drilling the workpiece to be drilled; μ is the viscosity of the current cooling fluid; K is the thermal conductivity of the cooling fluid; S is the inner surface area of the workpiece to be drilled per unit depth under the drilling aperture; T0 is the detection value of the cooling fluid temperature detection device before drilling the workpiece to be drilled; T3 is the median value of the target temperature range after the current target cooling of the drill bit; t is the drilling time of the workpiece to be drilled at the target selected speed; B is the Prandtl number of the cutting fluid; D is the drilling aperture of the workpiece to be drilled; α1 and α2 are the first temperature weight and the second temperature weight, respectively.

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