Improved roller way conveying device of medium-frequency hardening and tempering production line

Abstract

The utility model relates to an improved roller way conveying device of a medium-frequency hardening and tempering production line, which is suitable for conveying workpieces of the medium-frequency hardening and tempering production line. Comprising a roller way transmission shaft which is movably installed on a furnace frame of the intermediate frequency furnace through a bearing, a roller way motor which is located on the side face of the furnace frame of the intermediate frequency furnace and drives the roller way transmission shaft to rotate, and a rolling wheel which is fixedly installed on the roller way transmission shaft. The end portion of the blind hole is sealed through the waterproof sealing bearing and the waterproof plug arranged in the middle of the waterproof sealing bearing, and cooling water is guided into the bottom of the blind hole through the soft water guiding-in pipe and flows out through the soft water recycling pipe to cool the roller way transmission shaft. And the rollers are made of austenitic stainless steel, so that the rollers are prevented from being subjected to induction heating due to the influence of electromagnetic induction, and the roller bed mechanism is economical, attractive and practical.

Description

Technical Field

[0001] This utility model belongs to the field of medium-frequency continuous tempering heat treatment technology, specifically relating to an improved roller conveyor device for medium-frequency tempering production line workpiece conveying. Background Technology

[0002] Currently, medium-frequency heat treatment equipment is suitable for heat treating slender cylinders. Medium-frequency heat treatment operations are conducted in an assembly line manner, requiring one unit to be tightly connected to the next and moving forward. The furnace body consists of multiple induction coils, each 1500mm long, with a 510-550mm gap between each coil. Roller conveyors are installed at both ends of the furnace body and in the gaps between the induction coils to support the workpieces and ensure their normal forward movement, thus ensuring the normal operation of the production line. See details... Figure 3 A structural diagram is shown below. This structure has the following problems:

[0003] 1. Since the workpiece will reach a very high temperature after being heated by medium frequency, exceeding 800°C, the rollers will come into direct contact with the high-temperature workpieces, causing the roller temperature to rise rapidly. This will in turn cause the temperature of the entire conveyor roller mechanism to rise, which can easily lead to malfunctions and damage to the roller mechanism, causing the entire production line to stop operating.

[0004] 2. The rollers are made of carbon steel. Due to the leakage of magnetic flux in the induction coil, the roller temperature will rise due to electromagnetic induction, which will accelerate the damage and failure of the conveyor roller mechanism. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the above-mentioned phenomena and provide an improved roller conveyor device for a medium-frequency tempering production line that reduces the temperature of the entire conveyor roller mechanism and avoids the failure and damage of the roller mechanism caused by temperature rise.

[0006] The technical solution of this utility model is as follows: An improved roller conveyor device for a medium-frequency tempering production line includes a roller drive shaft movably mounted on the furnace frame of a medium-frequency furnace via bearings, a roller motor located on the side of the furnace frame and driving the roller drive shaft to rotate, and rollers mounted and fixed on the roller drive shaft. A blind hole is drilled at the end of the roller drive shaft away from the roller motor. The end of the blind hole is sealed by a water-proof sealed bearing and a water-proof plug set in the middle of the water-proof sealed bearing. Cooling water is introduced into the bottom of the blind hole through a soft water inlet pipe and flows out through a soft water recovery pipe to cool the roller drive shaft.

[0007] A soft water inlet pipe and a soft water return pipe are installed along the furnace frame of the medium frequency furnace. The diameter of the pipes is 30mm. A soft water inlet pipe and a soft water return pipe are connected to the soft water inlet pipe and the soft water return pipe, respectively. The diameter of the soft water inlet pipe and the soft water return pipe is 10mm.

[0008] The blind hole has a length of 600-650mm, an inner diameter of 30-35mm, and a wall thickness of 25-30mm. The bottom of the blind hole extends 50-150mm beyond the side of the roller.

[0009] The rollers installed at both ends of the furnace body and between the induction coils in the medium-frequency tempering production line are made of austenitic stainless steel.

[0010] The roller conveyor is placed horizontally and obliquely on the furnace frame of the medium-frequency furnace, forming a certain angle with the direction of workpiece movement.

[0011] The technical solution of this utility model has the following positive effects: The rollers are made of austenitic stainless steel, which avoids the rollers being heated by electromagnetic induction. The cooling of the roller conveyor shaft adopts a closed design. Components such as the soft water inlet pipe, soft water return pipe, soft water inlet pipe, and soft water recovery pipe are all made of stainless steel. The cooling water is special soft water for cooling medium-frequency induction coils, and a medium-frequency induction coil soft water cooling circulation system is used to cool the roller conveyor shaft, improving the cooling effect. This is economical, aesthetically pleasing, and practical. It also prevents the roller conveyor motor and roller conveyor bearings from overheating, which could cause malfunctions and damage to the roller conveyor mechanism, leading to the shutdown of the entire production line. This reduces product quality problems caused by sudden production line stoppages. Attached Figure Description

[0012] Figure 1 This is a front view of the roller conveyor structure of this utility model.

[0013] Figure 2 This is a top view of the roller conveyor structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of this utility model.

[0015] Figure 4 This is a partial structural diagram of the present invention along direction A.

[0016] Figure 5 This is a schematic diagram of the blind hole cooling design for the drive shaft of this utility model.

[0017] 1. Roller; 2. Roller drive shaft; 3. Insulation cover; 4. Induction coil; 5. Soft water return pipe; 6. Medium frequency furnace frame; 7. Roller motor; 8. Soft water inlet pipe; 9. Return water hose; 10. Inlet hose; 11. Waterproof sealing bearing; 12. Waterproof seal in the middle of the sealing bearing; 13. Soft water inlet pipe; 14. Soft water recovery pipe; 15. Blind hole. Detailed Implementation

[0018] like Figure 1 , 2 As shown in Figures 3, 4, and 5, an improved roller conveyor device for a medium-frequency tempering production line is described.

[0019] The system includes a roller drive shaft 2 movably mounted on the furnace frame 6 of the medium-frequency furnace via bearings, a roller motor 7 located on the side of the furnace frame 6 and driving the roller drive shaft 2 to rotate, and rollers 1 mounted and fixed on the roller drive shaft 2. A blind hole 15 is drilled at the end of the roller drive shaft 2 away from the roller motor 7. The end of the blind hole 15 is sealed by a water-proof bearing 11 and a water-proof plug 12 set in the middle of the water-proof bearing 11. Cooling water is introduced into the bottom of the blind hole 15 through a soft water inlet pipe 13 and flows out through a soft water recovery pipe 14 to cool the roller drive shaft 2.

[0020] The improved roller conveyor device is located between the two ends of the furnace body and the induction coil 4 in the medium-frequency tempering production line, and is equipped with a heat preservation cover 3. The roller drive shaft 2 is movably mounted on the furnace frame 6 of the medium-frequency furnace via bearings. The roller motor 7 is located on the side of the furnace frame 6 and drives the roller drive shaft 2 to rotate. The roller 1 is fixedly mounted on the roller drive shaft 2. A blind hole 15 is drilled at the end of the roller drive shaft 2 away from the roller motor 7. The end of the blind hole 15 is sealed with a water-proof bearing 11 and a water-proof plug 12 placed in the middle of the water-proof bearing 11. Cooling water is introduced into the bottom of the blind hole 15 through the soft water inlet pipe 13 and flows out through the soft water recovery pipe 14 to cool the roller drive shaft 2. The roller motor 7 is located on the side of the furnace frame 6 and is connected to the roller drive shaft 2 to drive the roller 1, ensuring that the roller 1 rotates at a certain frequency.

[0021] A soft water inlet pipe 8 and a soft water return pipe 5 are installed along the furnace frame 6 of the medium-frequency furnace. The diameter of each pipe is 30mm. A soft water inlet pipe 13 and a soft water return pipe 14 are connected to the soft water inlet pipe 8 and the soft water return pipe 5, respectively. The diameter of each soft water inlet pipe 13 and the soft water return pipe 14 is 10mm. Cooling water flows from the soft water inlet pipe 8 through the inlet hose 10 to the soft water inlet pipe 13. The soft water inlet pipe 13 is then fed into the blind hole 15 on the roller conveyor shaft. The opening of the soft water inlet pipe 13 is 10-20mm away from the bottom of the blind hole 15 on the roller conveyor shaft, allowing the cooling water to be guided to the bottom of the blind hole 15 to cool the roller conveyor shaft 2. Afterward, the cooling water flows back to the soft water return pipe 5 through the soft water return pipe 14, the return hose 9, and then through the soft water return pipe 14.

[0022] The blind hole 15 has a length of 600-650mm, an inner diameter of 30-35mm, and a wall thickness of 25-30mm. The bottom of the blind hole 15 extends 50-150mm beyond the side of the roller 1.

[0023] The rollers 1, which are installed at both ends of the furnace body and between the induction coils in the medium-frequency tempering production line, are made of austenitic stainless steel.

[0024] The roller conveyor is placed horizontally and obliquely on the furnace frame 6 of the medium-frequency furnace, forming a certain angle with the direction of workpiece movement.

[0025] The roller conveyor device is horizontally and obliquely placed on the furnace frame 6 of the medium-frequency furnace, forming a certain angle with the direction of workpiece movement. Figure 4 This ensures that the workpiece can rotate at a certain frequency during forward movement, thereby making the heating and cooling of the workpiece more uniform.

[0026] By adding a cooling system, the heat transferred from the high-temperature workpiece to the roller 1 and roller conveyor shaft 2 is carried away, reducing equipment failures and preventing the entire production line from stopping due to the roller conveyor motor 7 and roller conveyor bearings being damaged by the roller conveyor mechanism caused by temperature rise. This ensures the normal, stable and smooth operation of the production line and reduces product quality problems caused by sudden production line stoppages.

[0027] (1) The rollers 1 at both ends of the furnace body and between the induction coils of the medium frequency tempering production line are made of austenitic stainless steel to avoid the rollers 1 being heated by electromagnetic induction.

[0028] (2) Drill a hole at the end of the roller conveyor shaft 2 away from the roller motor 7. The hole is 600-650mm long and is a blind hole 15. The bottom of the hole extends 50-150mm beyond the side of the roller 1. To ensure that the support capacity of the roller conveyor shaft 2 meets the requirements, the inner diameter of the hole is 30-35mm and the wall thickness of the hole is 25-30mm.

[0029] (3) The cooling system for roller conveyor shaft 2 adopts a closed design, see Figure 5 A schematic diagram of the blind hole cooling design for the drive shaft is shown. The end of the blind hole 15 is sealed by a water-proof sealing bearing 11 and a water-proof plug 12 in the middle of the sealing bearing. Cooling water is introduced into the bottom of the blind hole 15 through the soft water inlet pipe 13 and then flows out through the soft water recovery pipe 14 to cool the roller conveyor drive shaft 2. The diameter of both the soft water inlet pipe 13 and the soft water recovery pipe 14 is 10mm.

[0030] (4) A soft water inlet pipe 8 and a soft water return pipe 5 are installed along the furnace frame 6 of the medium-frequency furnace. Both pipes have a diameter of 30mm. To improve the cooling effect, the roller cooling system is integrated into the soft water cooling circulation system of the medium-frequency induction coil. See details. Figure 1 , 2 3, 4, 5.

[0031] Because the end of the blind hole 15 is sealed with a water-proof sealing bearing 11, the soft water inlet pipe 8 and the soft water return pipe 5 are connected to the soft water inlet pipe 13 and the soft water recovery pipe 14 through the inlet hose 10 and the return hose 9, respectively. When the drive shaft rotates, the cooling system can be ensured to be stable and reliable.

[0032] The soft water inlet pipe 8, soft water return pipe 5, soft water inlet pipe 13, and soft water recovery pipe 14 are all made of stainless steel. The inlet hose 10 and the return hose 9 are both rubber hoses.

[0033] The cooling water is soft water specifically designed for cooling medium-frequency induction coils.

Claims

1. An improved roller conveyor device of a medium frequency conditioning production line, comprising a roller drive shaft (2) movably mounted on a medium frequency furnace rack (6) through a bearing, a roller motor (7) located on the side of the medium frequency furnace rack (6) and driving the roller drive shaft (2) to rotate, and a roller (1) fixedly installed on the roller drive shaft (2), characterized in that: A blind hole (15) is drilled at the end of the roller drive shaft (2) away from the roller motor (7), the blind hole (15) is closed by a water-proof sealing bearing (11) at the end and a water-proof sealing plug (12) in the middle of the water-proof sealing bearing (11), cooling water is introduced into the bottom of the blind hole (15) through the soft water inlet pipe (13) and flows out through the soft water recovery pipe (14) to cool the roller drive shaft (2).

2. The improved roller conveyor of the medium frequency conditioning production line according to claim 1, characterized in that: The soft water inlet pipe (8) and the soft water recovery pipe (5) are erected along the intermediate frequency furnace frame (6), the pipe diameter of the soft water inlet pipe (8) and the soft water recovery pipe (5) is 30mm, the soft water inlet pipe (13) and the soft water recovery pipe (14) are connected to the soft water inlet pipe (8) and the soft water recovery pipe (5) respectively, the pipe diameter of the soft water inlet pipe (13) and the soft water recovery pipe (14) is 10mm.

3. The improved roller conveyor of the medium frequency conditioning production line according to claim 1, characterized in that: The hole length of the blind hole (15) is 600-650mm, the inner diameter is 30-35mm, and the wall thickness is 25-30mm, the bottom of the blind hole (15) exceeds the side of the roller (1) by 50-150mm.

4. The improved roller conveyor of the medium frequency conditioning production line according to claim 1, characterized in that: The roller (1) arranged between the two ends of the intermediate frequency conditioning production line furnace body and the induction coil is made of austenitic stainless steel.

5. The improved roller conveyor of the medium frequency conditioning production line according to claim 1, characterized in that: The roller conveying device is horizontally and obliquely placed on the intermediate frequency furnace frame (6) and forms a certain angle with the running direction of the workpiece.

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