An array multi-station rotary curing apparatus

Abstract

This invention relates to an array multi-station rotary vulcanizing device, belonging to the technical field of vulcanizing equipment, and solves the problems of workpiece coating accumulation and low processing efficiency in the existing vulcanizing process. An array multi-station rotary vulcanizing device includes a hot air box, a frame, a multi-axis rotating system and a lubrication system mounted on the frame, and a loading cylinder. The multi-axis rotating system includes a multi-axis fixed base, a main shaft, a drive motor, gears, rotating shafts, and shaft heads. The multi-axis fixed base is vertically mounted on the frame, and the gears are arranged on the vertical surface of the multi-axis fixed base near the drive motor. The drive motor is connected to the drive gears via the main shaft. Multiple rotating shafts are connected to the hub holes of each gear by interference fit or snap-fit, and the shaft heads are connected to the rotating shafts by interference fit or snap-fit. One end of the loading cylinder is connected to the shaft head, and the other end of the loading cylinder is equipped with a rubber pad. This allows multiple workpieces to be vulcanized simultaneously by rotation, ensuring the uniformity of the workpiece coating.

Description

Technical Field

[0001] This invention relates to the field of vulcanization equipment technology, and in particular to an array multi-station rotary vulcanization device. Background Technology

[0002] In the vulcanization process of rubber products, the sulfur addition reaction causes cross-linking between rubber macromolecular chains, altering the original thermoplasticity, stretchability, and flowability of the rubber, forming a ternary vulcanization network structure. To achieve this reaction, external energy must be applied to reach a specific vulcanization temperature, and then the rubber is kept at that temperature range to complete the entire vulcanization reaction. Existing vulcanizing ovens are merely baking ovens with heating and baking functions, which cannot guarantee the uniformity of the coating on the workpiece. Especially for parts with vertical surfaces or cylindrical shapes, the surface coating will flow downwards under the influence of gravity, causing the coating to accumulate and resulting in severely uneven coating thickness. Summary of the Invention

[0003] Based on the above analysis, the present invention aims to provide an array multi-station rotary vulcanizing device to solve the problems of workpiece coating accumulation and low processing efficiency in existing vulcanizing processes.

[0004] On one hand, embodiments of the present invention provide an array multi-station rotary vulcanizing device, including a hot air box, a frame, a multi-axis rotating system and a lubrication system mounted on the frame, and a loading cylinder; The multi-axis rotation system includes a multi-axis fixed base 13, a main shaft, a drive motor 62, gears 54, rotating shafts 38, and shaft heads 22. The multi-axis fixed base is vertically mounted on a frame, and multiple gears are arranged on the vertical surface of the multi-axis fixed base near the drive motor. The drive motor is connected to the drive gears via the main shaft. The drive gears drive multiple gears to rotate. Multiple rotating shafts 38 are connected one-to-one to the hub holes of multiple gears by interference fit or snap fasteners. Multiple shaft heads are connected one-to-one to the rotating shafts by interference fit or snap fasteners. Multiple cargo cylinders 33 are connected one-to-one to the multiple shaft heads, and a rubber pad is provided at the other end of each cargo cylinder.

[0005] Preferably, the end of the shaft head is equipped with a spring plunger, which is plugged into and detached from the cargo cylinder.

[0006] Specifically, the cylinder wall of the loading cylinder 33 has multiple rectangular holes with an opening rate of 50% to 70%.

[0007] Furthermore, the lubrication system includes an oil pump, an oil tank, and oil pipes. The oil pump draws lubricating oil from the oil tank and delivers it to the meshing parts of each gear through the oil pipes. The lubricating oil drips directly into the meshing parts. The lubricated oil flows back to the oil tank from the surface of the gear.

[0008] For example, the front and rear of the hot air box are respectively installed with sealing doors; the interior contains a heating device, a temperature detection device, and a circulating fan and an exhaust fan installed on the top.

[0009] Preferably, a sealing ring and a door seal are installed between the sealing door and the hot air box.

[0010] It should be noted that a temperature sensor is installed on the hot air box.

[0011] Furthermore, the exhaust fan is connected to an exhaust pipe, and a solenoid valve is installed on the exhaust pipe.

[0012] On the other hand, embodiments of the present invention provide a multi-rotation vulcanization method, which uses the vulcanization equipment for vulcanization and includes the following steps: Step 1: Insert multiple container cylinders into the spring plungers at the ends of the shaft heads; Step 2: Place multiple workpieces to be vulcanized into the loading cylinder installed in Step 1, and close the hot air box sealing door. Step 3: Start the drive motor, and the drive gear will drive the rotating shaft and the loading cylinder to rotate at a speed of 30~35 r / min; Step 4: Turn on the heating device of the hot air box and heat it to 75~80℃. Then start the circulating fan and heat the circulation time for 3~5 hours. Step 5: After vulcanization is complete, turn off the heating device and circulating fan of the hot air box, turn on the exhaust fan and solenoid valve to exhaust the hot air from the box, and open the sealing door. Step 6: After the workpiece has cooled to room temperature, remove it from the container.

[0013] It is worth noting that in step 4, the temperature inside the hot air chamber is monitored by a temperature sensor. When the temperature is too high, some hot air is exhausted and external cold air is introduced. When the temperature is too low, the heating power is increased.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. This invention uses a combination of circulating hot air and workpiece rotation. The rotating shaft drives the carrier cylinder carrying the workpiece to be heated to rotate, causing the hot air to rotate. This effectively improves the heating area of ​​the workpiece, making the heating area of ​​each carrier cylinder uniformly heated without dead corners. This solves the problem of traditional radiation method where hot air is directly blown onto the workpiece, resulting in local dead corners and poor heating uniformity.

[0015] 2. This invention uses multiple loading cylinders to load workpieces and heats multiple workpieces simultaneously, achieving simultaneous processing of multiple workpieces. It has a simple structure, low production cost, and high operating efficiency, which can significantly improve production efficiency and meet the needs of mass production.

[0016] 3. The present invention is designed to drive the motor to drive all rotating shafts through the main shaft and gears. The rotating shafts are connected to the loading cylinder through the shaft head, thereby driving the loading cylinder to rotate. The workpiece is placed in the loading cylinder, realizing the rotation of the workpiece. Under the action of gravity, the coating on the workpiece wall flows uniformly in one direction, thereby ensuring the uniformity of the coating.

[0017] 4. The end of the rotating shaft of the present invention is connected to the loading cylinder by a spring plunger, which realizes quick positioning between the loading cylinder and the shaft head, facilitates production operation, and prevents the loading cylinder from detaching from the shaft head when it rotates.

[0018] 5. The free end of the carrier cylinder of the present invention is provided with a rubber pad that is interference-fitted with the workpiece. The rubber pad provides a small clamping force to the workpiece through its own elasticity, which effectively prevents the workpiece from falling off during rotation.

[0019] 6. The loading cylinder of this invention has multiple rectangular holes on its wall and controls an appropriate opening ratio. While ensuring the loading capacity of the loading cylinder, it makes the structure lighter, facilitates air circulation, reduces wind resistance, helps improve the heat exchange efficiency inside the hot air box, reduces energy consumption, and improves the economy and environmental protection of the equipment.

[0020] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0021] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0022] Figure 1 is a schematic diagram of the structure of the multi-rotary vulcanizing equipment of the present invention; Figure 2 This is a schematic diagram of the carrier cylinder and shaft head structure of the present invention; Figure 3 This is a schematic diagram of the carrier cylinder structure of the present invention.

[0023] Figure label: 13-Multi-axis fixed seat; 22-Shaft head; 33-Carrying cylinder; 34-Rubber pad; 38-Rotating shaft; 43-Frame; 5-Hot air box; 51-Workpiece; 54-Gear; 56-Oil pipe; 58-Oil tank; 62-Drive motor; 64-Oil pump. Detailed Implementation

[0024] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0025] On one hand, a specific embodiment of the present invention discloses an array multi-station rotary vulcanizing device, such as... Figure 1 As shown, it includes a hot air box 5, a frame 43, a multi-axis rotating system and a lubrication system mounted on the frame, and a cargo cylinder 33; The multi-axis rotation system includes a multi-axis fixed base 13, a main shaft, a drive motor 62, gears 54, rotating shafts 38, and shaft heads 22. The multi-axis fixed base is vertically mounted on a frame, and multiple gears are arranged on the vertical surface of the multi-axis fixed base near the drive motor. The drive motor is connected to the drive gears via the main shaft. The drive gears drive multiple gears to rotate. Multiple rotating shafts 38 are connected one-to-one to the hub holes of multiple gears by interference fit or snap fasteners. Multiple shaft heads are connected one-to-one to multiple rotating shafts by interference fit or snap fasteners. Multiple cargo cylinders 33 are connected one-to-one to multiple shaft heads, and a rubber pad 34 is provided at the other end of each cargo cylinder 33.

[0026] After the workpiece is placed into the carrier cylinder, the rubber pad is interference-fitted with the workpiece, and through its own elasticity, it provides a small clamping force to the workpiece, so that the workpiece will not fall off during rotation.

[0027] like Figure 2 As shown, the end of the shaft head 22 is equipped with a spring plunger, which is plugged into and detached from the loading cylinder 33. This enables quick positioning between the loading cylinder 33 and the shaft head 22, facilitating production operations and preventing the loading cylinder 33 from disengaging from the shaft head 22 during rotational movement.

[0028] The efficiency and automation level of the vulcanization process have been improved. The combination of the hot air box, multi-axis rotation system and lubrication system makes the vulcanization process more uniform and controllable. At the same time, the design of the loading cylinder facilitates the loading and unloading of workpieces.

[0029] The drive motor drives the drive gear to rotate through the main shaft. The drive gear drives the rotating shaft connected in the hub hole of each gear to rotate. When all the rotating shafts rotate, they are connected to the loading cylinder through the shaft head, thereby driving the loading cylinder to rotate. The workpiece is placed in the loading cylinder, and the workpiece rotates. Under the action of gravity, the coating on the workpiece wall flows evenly in one direction, thus ensuring the uniformity of the coating.

[0030] The loading cylinder 33 has multiple rectangular holes in its wall, with an opening rate of 50% to 70%. This design ensures sufficient loading capacity while making the structure lighter, facilitating airflow, reducing wind resistance, improving heat exchange efficiency within the hot air box, reducing energy consumption, and enhancing the equipment's economy and environmental friendliness. The lubrication system includes an oil pump 64, an oil tank 58, and oil pipes 56. The oil pump draws lubricating oil from the oil tank and delivers it to the meshing parts of each gear through the oil pipes, allowing the lubricating oil to drip directly into the meshing parts. After lubrication, the lubricating oil flows back to the oil tank from the gear surface.

[0031] The oil pump, oil pipes, and oil sump together form the lubricating oil circulation system, ensuring continuous lubrication and cooling of moving parts such as gears.

[0032] The hot air box 5 has sealing doors installed at the front and rear respectively; inside there is a heating device, a temperature detection device, and a circulating fan and an exhaust fan installed on the top, so as to realize the functions of heating and temperature control of the workpiece, as well as exhaust of waste gas.

[0033] During heating, the heating device heats the air inside the hot air box and uses a circulating fan to make the air temperature inside the hot air box uniform. During the rotation of the workpiece in the loading cylinder 33, a vortex heating is formed at the bottom of the workpiece.

[0034] Furthermore, sealing doors are installed at the front and rear of the hot air box 5, the multi-axis rotating cargo cylinder is located between the sealing doors, and the main shaft, drive motor 62, and gear 54 are located outside the sealing doors; a sealing ring and a door seal are installed between the sealing doors and the hot air box 5.

[0035] The design of the sealing ring and door seal improves the sealing performance of the hot air box, preventing heat loss and interference from the external environment. This helps maintain the temperature and pressure inside the box, ensuring the stability and uniformity of the vulcanization process.

[0036] Furthermore, the circulating fan and exhaust fan inside the hot air box 5 are separated by baffles to prevent hot air from flowing directly into the circulating fan and exhaust fan and causing them to burn out.

[0037] The hot air box 5 has an air inlet on one side of its top, which is used to introduce external air into the hot air box 5.

[0038] A temperature sensor is installed on the hot air chamber 5 to monitor the temperature inside the chamber. If the temperature is too high, some hot air is exhausted and external cold air is introduced; if the temperature is too low, the heating power is increased. The combined use of the heating device and the temperature detection device achieves precise temperature control, which is crucial for ensuring vulcanization quality and improving energy efficiency.

[0039] The exhaust fan 12 is connected to an exhaust pipe, and a solenoid valve is installed on the exhaust pipe. The exhaust pipe and solenoid valve can discharge excess waste gas, thereby stabilizing the heating temperature and reducing environmental pollution.

[0040] On the other hand, a specific embodiment of the present invention also provides a multi-stage rotary vulcanization method, comprising the following steps: Step 1: Insert multiple container cylinders into the spring plungers at the ends of the shaft heads; Step 2: Place multiple workpieces to be vulcanized into the loading cylinder installed in Step 1, and close the hot air box sealing door. Step 3: Start the drive motor, and the drive gear will drive the rotating shaft and the loading cylinder to rotate at a speed of 30~35 r / min; Step 4: Turn on the heating device of the hot air box and heat it to 75~80℃. Then start the circulating fan and heat the circulation time for 3~5 hours. Step 5: After vulcanization is complete, turn off the heating device and circulating fan of the hot air box, turn on the exhaust fan and solenoid valve to exhaust the hot air from the box, and open the sealing door. Step 6: After the workpiece has cooled to room temperature, remove it from the container.

[0041] Preferably, in step 4, the temperature inside the hot air chamber is monitored by a temperature sensor. If the temperature is too high, some hot air is discharged and external cold air is introduced. If the temperature is too low, the heating power is increased.

[0042] In summary, the array multi-station rotary vulcanizing equipment of the present invention forms a vortex of hot air during the workpiece rotation process, resulting in uniform heat distribution and ensuring the uniformity of the coating; at the same time, multiple carrier cylinders are set up to achieve simultaneous processing of multiple items, which improves heating efficiency, shortens heating time, and reduces production costs.

[0043] The multi-stage rotary vulcanizing equipment and method of the present invention will be described below with reference to specific embodiments. Example

[0044] This embodiment provides an array multi-station rotary vulcanizing device and method, such as Figure 1 , Figure 2 As shown.

[0045] The workpiece to be processed has an outer diameter of 68 mm and a length of 800 mm.

[0046] Multi-axis rotary vulcanizing equipment: including hot air box 5, frame 43, multi-axis rotary system and lubrication system mounted on the frame, and 8 loading cylinders 33; The multi-axis rotation system includes a multi-axis mounting base 13, a main shaft, a drive motor 62, a gear 54, a rotating shaft 38, and eight shaft heads 22. The multi-axis mounting base is vertically mounted on a frame, and the gears are arranged on the vertical surface of the multi-axis mounting base near the drive motor. The drive motor is connected to the drive gears via the main shaft. The rotating shaft 38 is fixedly connected to the hub hole of each gear by a snap-fit, and the shaft heads are fixedly connected to the rotating shaft by snap-fits. The end of the shaft head 22 is equipped with a spring plunger, which is plugged into and connected to one end of the loading cylinder 33. The other end of the loading cylinder 33 is provided with a rubber pad 34. The cylindrical wall of the loading cylinder 33 has multiple rectangular holes, with an opening rate of 50%. The lubrication system includes an oil pump 64, an oil tank 58, and an oil pipe 56. The oil pump draws lubricating oil from the oil tank and delivers it to the meshing parts of each gear through the oil pipe. The lubricating oil drips directly into the meshing parts. The lubricating oil after lubrication flows back to the oil tank from the surface of the gear. Sealed doors are installed at the front and rear of the hot air box 5. Inside, there is a heating device, a temperature detection device, and a circulating fan and an exhaust fan installed at the top. Sealed doors are also installed at the front and rear of the hot air box 5. The multi-axis rotating cargo cylinder is located between the sealed doors, and the main shaft, drive motor 62, and gear 54 are located outside the sealed doors. Sealing rings and door seals are installed between the sealed doors and the hot air box 5. The circulating fan and exhaust fan inside the hot air box 5 are separated by baffles. An air inlet is located on one side of the top of the hot air box 5, used to introduce external air into the interior of the hot air box 5. A temperature sensor is installed on the hot air box 5. The exhaust fan 12 is connected to an exhaust pipe, and a solenoid valve is installed on the exhaust pipe.

[0047] The multi-rotation vulcanization method includes the following steps: Step 1: Insert the 8 container cylinders into the spring plungers at the ends of the shafts; Step 2: Place the 8 workpieces to be vulcanized into the container cylinder installed in Step 1, and close the hot air box sealing door. Step 3: Start the drive motor, and the drive gear will drive the rotating shaft and the loading cylinder to rotate at a speed of 30 r / min; Step 4: Turn on the heating device of the hot air box. When the temperature reaches 75°C, start the circulating fan. The heating and circulation time is 5 hours. Step 5: After vulcanization is complete, turn off the heating device and circulating fan of the hot air box, turn on the exhaust fan and solenoid valve to exhaust the hot air from the box, and open the sealing door. Step 6: After the workpiece has cooled to room temperature, remove it from the container.

[0048] Preferably, in step 4, the temperature inside the hot air chamber is monitored by a temperature sensor. If the temperature is too high, some hot air is discharged and external cold air is introduced. If the temperature is too low, the heating power is increased.

[0049] Tests showed that the coating on the workpiece surface was uniform and the drying speed was fast.

[0050] Comparative Example 1 This embodiment provides an array multi-station rotary vulcanization device and method.

[0051] The shape and dimensions of the workpiece to be processed are the same as those in Example 1.

[0052] The vulcanizing equipment is basically the same as that in Example 1, except that the outer wall of the carrier cylinder is not perforated.

[0053] The vulcanization process steps are the same as in Example 1.

[0054] Testing revealed that the coating on the workpiece surface was uniform, the drying efficiency was low, and the workpiece was not completely dried after 5 hours of heating cycle.

[0055] Comparative Example 2 This embodiment provides an array multi-station rotary vulcanization device and method.

[0056] The shape and dimensions of the workpiece to be processed are the same as those in Example 1.

[0057] The vulcanizing equipment is basically the same as in Example 1, except that a circulating fan is not installed.

[0058] The vulcanization process is basically the same as in Example 1, except that the circulating fan is not turned on in step 4.

[0059] Testing revealed that the coating on the workpiece surface was uniform, the drying efficiency was low, and the workpiece was not completely dried after 5 hours of heating cycle.

[0060] Comparative Example 3 This embodiment provides an array multi-station rotary vulcanization device and method.

[0061] The shape and dimensions of the workpiece to be processed are the same as those in Example 1.

[0062] The vulcanizing equipment is the same as in Example 1.

[0063] The vulcanization process is basically the same as in Example 1, except that the multi-axis rotation in step 3 is not performed.

[0064] Testing revealed that the workpiece surface had a buildup of coating, resulting in low drying efficiency. After 5 hours of heating and cycling, the workpiece was not completely dry.

[0065] As can be seen from Comparative Example 1 and Example 1, the lack of openings in the carrier cylinder leads to poor air circulation and uneven heating of the workpiece, resulting in low drying efficiency. As can be seen from Comparative Example 2 and Example 1, the lack of hot air circulation within the hot air box results in poor uniform heating of the workpiece and low drying efficiency. As can be seen from Comparative Example 3 and Example 1, the lack of rotation of the carrier cylinder and workpiece leads to coating buildup on the workpiece surface, uneven heating, and low drying efficiency.

[0066] In summary, the array multi-station rotary vulcanizing equipment of the present invention forms a vortex of hot air during the workpiece rotation process, resulting in uniform heat distribution and ensuring the uniformity of the coating; at the same time, multiple carrier cylinders are set up to achieve simultaneous processing of multiple items, which improves heating efficiency, shortens heating time, and reduces production costs.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An array multi-station rotary curing apparatus, characterized by, Includes hot air box, frame, multi-axis rotating system and lubrication system mounted on the frame, and cargo cylinder; The multi-axis rotation system includes a multi-axis fixed base, a main shaft, a drive motor, gears, rotating shafts, and shaft heads. The multi-axis fixed base is vertically mounted on a frame, and multiple gears are arranged on a vertical surface of the multi-axis fixed base near the drive motor. The drive motor is connected to the drive gears via the main shaft, and the drive gears drive the multiple gears to rotate. The multiple rotating shafts are connected one-to-one to the hub holes of the multiple gears by interference fit or snap fasteners, and the multiple shaft heads are connected one-to-one to the multiple rotating shafts by interference fit or snap fasteners. One end of each of the multiple carrying cylinders is connected to one of the multiple shaft heads, and the other end of each carrying cylinder is provided with a rubber pad.

2. The vulcanization apparatus according to claim 1, characterized by The end of the shaft head is equipped with a spring plunger, which is plugged into and plugged into the cargo cylinder.

3. The vulcanization apparatus according to claim 2, characterized by The cylindrical container has multiple rectangular holes in its wall, with an opening rate of 50% to 70%.

4. The vulcanization apparatus according to claim 1, characterized by The lubrication system includes an oil pump, an oil tank, and oil pipes. The oil pump draws lubricating oil from the oil tank and delivers it to the meshing parts of each gear through the oil pipes. The lubricating oil drips directly into the meshing parts. The lubricated oil flows back to the oil tank from the surface of the gears.

5. The vulcanization apparatus according to claim 1, characterized by The hot air box is equipped with sealing doors at the front and rear respectively; inside there is a heating device, a temperature detection device, and a circulating fan and an exhaust fan installed on the top.

6. The vulcanizing equipment according to claim 5, characterized in that, A sealing ring and a door seal are installed between the sealed door and the hot air box.

7. The vulcanizing equipment according to claim 5, characterized in that, A temperature sensor is installed on the hot air box.

8. The vulcanizing equipment according to claim 5, characterized in that, The exhaust fan is connected to the exhaust pipe, and a solenoid valve is installed on the exhaust pipe.

9. A multi-stage rotary vulcanization method, characterized in that, Vulcanization using the vulcanization equipment described in any one of claims 1 to 8 comprises the following steps: Step 1: Insert multiple container cylinders into the spring plungers at the ends of the shaft heads; Step 2: Place multiple workpieces to be vulcanized into the loading cylinder installed in Step 1, and close the hot air box sealing door. Step 3: Start the drive motor, and the drive gear will drive the rotating shaft and the loading cylinder to rotate at a speed of 30~35 r / min; Step 4: Turn on the heating device of the hot air box and heat it to 75~80℃. Then start the circulating fan and heat the circulation time for 3~5 hours. Step 5: After vulcanization is complete, turn off the heating device and circulating fan of the hot air box, turn on the exhaust fan and solenoid valve to exhaust the hot air from the box, and open the sealing door. Step 6: After the workpiece has cooled to room temperature, remove it from the container.

10. The method according to claim 9, characterized in that, In step 4, the temperature inside the hot air chamber is monitored by a temperature sensor. If the temperature is too high, some hot air is exhausted and external cold air is introduced. If the temperature is too low, the heating power is increased.

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