Hot air high-temperature circulating tempering furnace for bearing machining and process thereof

Abstract

The invention relates to the technical field of hot air tempering furnaces, in particular to a hot air high-temperature circulating tempering furnace for bearing machining and a process of the hot air high-temperature circulating tempering furnace for bearing machining. The temperature sensor sends detected temperature drop information to a host terminal of the tempering furnace, the host terminal controls the electromagnetic linkage device to be powered on, the electromagnetic linkage device establishes transmission between the vertical worm and the horizontal pushing device, follow-up transmission causes all the electric heating units to conduct self-detection one by one, specifically, a main heating tool and a temporary heating tool in the electric heating units change positions, and the electric heating units conduct self-detection. If the main heating tool is damaged and the positions of the main heating tool and the temporary heating tool are changed, the temporary heating tool heats the passing airflow, finally, the specified hot air temperature in the square channel of the hearth is recovered, and the temporary heating tool can completely replace the main heating tool to heat the airflow after the defective main heating tool is checked, so that the heating work of the tempering furnace is not influenced; meanwhile, workers can conveniently position and maintain the tempering furnace in the later period.

Description

Technical Field

[0001] The invention relates to the technical field of hot air tempering furnaces, in particular to a hot air high-temperature circulation tempering furnace for bearing processing and a process thereof. Background Art

[0002] There are many heating wires installed in the electric heating wire heating hot air tempering furnace. Damage to the heating wire will affect the tempering of the workpiece. There are many reasons for the damage of the heating wire. For example, the heating wire is designed with a certain power tolerance range. If it is used for a long time beyond this range, the heating wire will generate too much heat and cause itself to burn out; the quality of heating wires on the market is uneven. Some low-quality heating wires may use unqualified materials or manufacturing processes, which will greatly shorten their service life; the use environment of the heating wire will also affect its service life. The heating wire is susceptible to corrosion and oxidation, which in turn affects its performance and service life; the heating wire needs to be inspected and maintained regularly during long-term use. If it is not maintained in time, dirt and oxides on the heating wire will continue to accumulate, affecting its heat dissipation effect, thereby causing damage.

[0003] Electric heating wire tempering furnaces are used for heating in bearing processing. If any heating wire in the tempering furnace is damaged, the temperature in the furnace will drop slightly. If the tempering furnace that has been running is forcibly interrupted due to a damaged heating wire, it will cause losses to production and processing. If the damaged heating wire can be automatically checked and replaced, it is the technical direction of innovative research and development of tempering furnaces.

[0004] The flat spiral heating wire used in the tempering furnace is easy to soften and deform when heated, which is also a factor that accelerates the damage of the heating wire. The problem can be solved by setting multiple heat-resistant thin rods inside the spiral heating wire. While the heat-resistant thin rods support the heating wire, they do not affect the heat dissipation of the heating wire. However, the heat dissipation of the local contact area between the heat-resistant thin rods and the heating wire will be affected.

[0005] In order to solve the above problems, the present invention provides a hot air high-temperature circulation tempering furnace for bearing processing and a process thereof. Summary of the Invention

[0006] The object of the present invention is to provide a hot air high temperature circulation tempering furnace for bearing processing and a process thereof, so as to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hot air high-temperature circulation tempering furnace for bearing processing, comprising:

[0008] A horizontally laid furnace channel, which is a square cylindrical shell, with multiple matrix-distributed horizontal air holes on both sides of the shell;

[0009] The wind wheel is distributed above the circular hole opened on the top shell of the furnace square channel;

[0010] The motor device is connected to the top of the middle vertical shaft of the wind wheel through transmission;

[0011] Heating integrated mechanisms are provided on both sides of the exterior of the furnace channel, and a speed reduction transmission assembly is provided between the heating integrated mechanism and the central vertical shaft on the wind wheel to establish a linkage;

[0012] A temperature sensor is provided below the circular hole of the top shell of the furnace square channel;

[0013] The heating integrated mechanism includes a vertical worm gear for external connection, an integrated horizontal shaft driven by one side of the vertical worm gear, a row of branch vertical shafts driven by one side of the integrated horizontal shaft, and a row of electric heating units driven on each branch vertical shaft. All electric heating units are distributed in a matrix manner. The heating integrated mechanism also includes a row of horizontal pushing devices, an electromagnetic linkage that overlaps and drives between the horizontal pushing devices and the vertical worm gear at the edge position, and a pressure-generating device that drives head to tail between two adjacent horizontal pushing devices. Each horizontal pushing device pushes and controls a row of horizontal electric heating units, and the airflow passing through the horizontal air holes in the square channel of the furnace will be heated by a corresponding electric heating unit.

[0014] The electric heating unit includes:

[0015] The main heating tools are distributed at the horizontal air holes of the furnace square channel, and the temporary heating tools are distributed parallel to the main heating tools;

[0016] An electrical box used to control the exchange position of the main heating tool and the temporary heating tool.

[0017] The main heating tool and the temporary heating tool have the same structure and both include:

[0018] The heating wire has a main body of a spiral section, and both ends of the heating wire extend into the electrical box;

[0019] A plurality of heat-resistant thin rods are evenly arranged in a ring inside the spiral section of the heating wire, and a horizontal column pile is used to support the plurality of heat-resistant thin rods arranged in a ring. One end of the heat-resistant thin rod is movably sleeved in a column hole opened on the horizontal column.

[0020] The electrical box includes a round box in the shape of a disc shell, an exchange disk movably sleeved in a round hole opened on one side of the round box, two pairs of conductive springs fixed on the exchange disk, a power supply line that is in contact with a pair of conductive springs and energized, and a shaft clamping device clamped to a horizontal pile column, and the shaft clamping device is distributed between the pair of energized conductive springs, the horizontal pile column is movably sleeved in the through hole opened on the exchange disk, and the end of the heating wire is connected to the conductive spring.

[0021] The electrical box also includes a drum rack fixed in the middle of the exchange disk, and a pressure group with one end transmitting to the drum rack. The shaft clamping device, drum rack and pressure group are all distributed in the round box, and the other end of the pressure group extends to the outside of the round box. The round box is fixed on the square channel of the furnace.

[0022] The shaft clamping device includes an L-shaped fixed plate with one end fixed on the round box, a neck shaft movably sleeved in a through hole provided in the L-shaped fixed plate, a multi-adjustment disk fixed at one end of the neck shaft, a plurality of T-disc columns evenly arranged on the multi-adjustment disk, and a clamping spring sheet in contact with one end of the T-disc column. The other end of the T-disc column is clamped into a ball groove provided on the bottom surface of the horizontal pile column, and the T-disc column slides through the column hole provided on the multi-adjustment disk. The other end of the neck shaft is meshed with the annular bevel gear fixed on the branch vertical shaft for transmission through a bevel gear.

[0023] The pressing group includes a steering frame fixed on the round box, a J-shaped column sliding through the prism hole opened in the steering frame, a return spring contacted by one end of the J-shaped column, an extender shaft movably sleeved in the round hole opened in the steering frame, and an extender gear fixed at one end of the extender shaft, the extender gear and the outer gear ring provided on the drum frame are engaged for transmission, the other end of the extender shaft is engaged for transmission with a row of teeth provided on the J-shaped column by providing a shaft gear, one end of the return spring is fixed to the steering frame, and the other end of the J-shaped column extends to the outside of the round box.

[0024] The horizontal pushing device includes a first pile block fixed on the furnace square channel, a screw rod with one end movably sleeved in a column hole opened on the first pile block, a bridge frame screwed on the screw rod, and long sliding rods distributed parallel to both sides of the screw rod. One end of the long sliding rod is fixed on the first pile block, and the long sliding rod slides through the column hole opened on the bridge frame. The screw rod rotates to drive the bridge frame to move horizontally, and a flat plate is set on the bridge frame to push the J-shaped column encountered.

[0025] The pressing device includes a second pile block fixed on the furnace square, a tail connection device supported on the second pile block, and a bridge shaft with vertical transmission at one end of the tail connection device. The other end of the tail connection device establishes transmission with the screw rod in the previous horizontal pushing device. The bridge shaft is vertically transmitted with the screw rod in the next horizontal pushing device, and the previous horizontal pushing device and the next horizontal pushing device are distributed in opposite directions. The long sliding rod is fixedly connected to the second pile block.

[0026] The spring is sleeved on the long slide bar, and the long slide bar slides through the column hole opened on the slide block. The tail shaft is slidably inserted into the arc plate groove opened on the outer wall of the double-acting short shaft by setting an arc plate on the tail shaft. One end of the bridge shaft is transmitted to the bevel gear fixed to the other end of the tail shaft through a fixed bevel gear, and the other end of the bridge shaft is also transmitted to the bevel gear fixed to the end of the screw rod through a fixed bevel gear.

[0027] The hot air high temperature circulation process for bearing processing includes the following steps:

[0028] Step 1: The conveyor trolley carries the bearing workpiece through the furnace channel. Multiple streams of circulating hot air flow inside the furnace channel, and the bearing workpiece passes through the area blown by the multiple streams of circulating hot air one by one to achieve heating.

[0029] Step 2: The single-stream circulating hot air is realized by the rotation of the wind wheel. The wind wheel absorbs the hot air in the furnace channel and then diffuses the hot air to the outside of the furnace channel. The hot air is separated above the furnace channel and flows to both sides. Then it passes through the matrix horizontal air holes on both sides of the furnace channel and flows through the interior of the furnace channel. The main heating tool heats the passing air.

[0030] Step 3: If the main heating tool is damaged, the temperature of the rising hot air gathered at the circular hole on the top of the furnace square channel will drop. The temperature sensor will send the detected temperature drop information to the tempering furnace host terminal. The host terminal will control the electromagnetic linkage to energize. The electromagnetic linkage will establish a transmission between the horizontal push device and the vertical worm gear. The subsequent transmission will control the electric heating units on the transmission path one by one to complete the internal exchange.

[0031] Step 4: The internal exchange of the electric heating unit is specifically to switch positions of the main heating appliance and the temporary heating appliance, the main heating appliance is automatically powered off, and the temporary heating appliance is powered on. If the main heating appliance is in normal state, after the main heating appliance and the temporary heating appliance switch positions, the temperature of the hot air supplied to the inside of the furnace square channel remains stable. If the main heating appliance is in a faulty and non-heating state, after the main heating appliance and the temporary heating appliance switch positions, the temperature of the hot air supplied to the inside of the furnace square channel rises, and finally the temperature of the hot air detected by the temperature sensor returns to normal. At this time, the temperature sensor sends a normal temperature signal to the host terminal again, and the host terminal controls the electromagnetic linkage to cut off the power, and the transmission between the vertical worm and the horizontal push device is disconnected. The faulty main heating appliance is always replaced by the temporary heating appliance, and the normal main heating appliance in the previous troubleshooting process will automatically replace the temporary heating appliance again.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. When the tempering furnace heats the bearing workpiece passing through the furnace channel, if the heating wire is damaged, the temperature of the hot air gathered at the wind wheel will drop. The temperature sensor sends the detected temperature drop information to the tempering furnace host terminal. The host terminal controls the electromagnetic linkage to be energized. The electromagnetic linkage establishes a transmission between the vertical worm and the horizontal push device. The subsequent transmission causes all electric heating units to self-check one by one. Specifically, the main heating tool and the temporary heating tool in the electric heating unit change positions. If the main heating tool is damaged, after the main heating tool and the temporary heating tool change positions, the temporary heating tool heats the passing airflow, and finally the interior of the furnace channel returns to normal. The temperature sensor detects that the temperature of the hot air passing through has returned to normal, and sends the change information to the host terminal again, so as to determine the position of the damaged main heating appliance. On the contrary, the main heating appliance is not damaged, the main heating appliance and the temporary heating appliance switch positions, and the hot air temperature inside the furnace square channel does not return to normal after stabilization, then continue to self-detect the next electric heating unit until the position of the main heating appliance with problems is found. After the main heating appliance with problems is found, the temporary heating appliance will completely replace the main heating appliance to heat the airflow, which will not affect the heating work of the tempering furnace, and will facilitate the workers to locate and repair the tempering furnace later.

[0034] 2. The present invention stably supports the heating wire by continuously rotating multiple heat-resistant thin rods arranged inside the spiral section of the heating wire, thereby preventing the high-temperature heating wire from being deformed by gravity or wind. At the same time, the contact position between the heat-resistant thin rods and the heating wire continuously changes, avoiding the problem of heat accumulation in local sections of the heating wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present invention.

[0036] Figure 2 Schematic diagram of the wind wheel position.

[0037] Figure 3 This is a schematic diagram of the position of the push device.

[0038] Figure 4 This is a schematic diagram of the furnace square channel structure.

[0039] Figure 5 Schematic diagram of the location of the electric heating unit.

[0040] Figure 6 Schematic diagram of the electric heating unit structure.

[0041] Figure 7 Schematic diagram of the position of the electromagnetic linkage.

[0042] Figure 8 Schematic diagram of the main heating device structure.

[0043] Figure 9 It is a schematic diagram of the structure of the electrical box.

[0044] Figure 10 Schematic diagram of the conductive spring structure.

[0045] Figure 11 It is a structural diagram of the shaft clamping device.

[0046] Figure 12 It is a schematic diagram of the compression group structure.

[0047] Figure 13 It is a structural diagram of the pressing device.

[0048] Figure 14 Schematic diagram of the tail connection device structure.

[0049] Figure: furnace channel 1, wind wheel 2, motor equipment 3, heating integrated mechanism 4, temperature sensor 5, integrated horizontal shaft 6, branch vertical shaft 7, electric heating unit 8, horizontal push device 9, pressure device 10, electromagnetic linkage 11, vertical worm 12, main heating tool 13, temporary heating tool 14, electric box 15, electric heating wire 16, heat-resistant thin rod 17, horizontal pile column 18, round box 19, exchange plate 20, conductive spring 21, power supply line 22, shaft clamping device 23, cylinder Frame 24, pressure group 25, neck shaft 26, L-shaped fixed plate 27, pressing spring piece 28, multi-adjustment plate 29, T-plate column 30, return spring piece 31, range-extending shaft 32, range-extending gear 33, direction frame 34, J-shaped column 35, first pile block 36, bridge frame 37, long slide rod 38, screw rod 39, second pile block 40, tail connection device 41, bridge shaft 42, movable shaft gear 43, swimming block 44, spring 45, double-acting short shaft 46, S-shaped spring piece 47, tail shaft 48. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the technical solutions in the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0051] See also Figures 1 to 14 The present invention provides a technical solution: a hot air high temperature circulation tempering furnace for bearing processing, comprising:

[0052] The furnace channel 1 is horizontally laid and is a square cylindrical shell. Multiple horizontal air holes distributed in a matrix are provided on both sides of the shell.

[0053] The wind wheel 2 is located above the circular hole on the top shell of the furnace channel 1;

[0054] The motor device 3 is connected to the top of the middle vertical shaft of the wind wheel 2 through transmission;

[0055] The heating integrated mechanism 4 is provided on both sides of the outside of the furnace channel 1. The heating integrated mechanism 4 and the middle vertical shaft on the wind wheel 2 are linked by setting a speed reduction transmission component. The speed reduction transmission component is a prior art device. Figure 5 Understand that it is first decelerated by the large gear and then transmitted to the heating integrated mechanism 4 through the horizontal shaft;

[0056] The temperature sensor 5 is arranged below the circular hole of the top shell of the furnace channel 1;

[0057] The heating integrated mechanism 4 includes a vertical worm 12 for external connection, an integrated horizontal shaft 6 driven on one side of the vertical worm 12, a row of branch vertical shafts 7 driven on one side of the integrated horizontal shaft 6, and a row of electric heating units 8 driven on each branch vertical shaft 7. All electric heating units 8 are distributed in a matrix. The heating integrated mechanism 4 also includes a row of horizontal pushing devices 9, an electromagnetic linkage 11 that overlaps and drives between the horizontal pushing device 9 and the vertical worm 12 at the edge position, and a pressure-generating device 10 that drives end to end between two adjacent horizontal pushing devices 9. Each horizontal pushing device 9 pushes and controls a row of horizontal electric heating units 8. The airflow passing through the horizontal air holes of the furnace square channel 1 will be heated by the corresponding electric heating unit 8. One end of the integrated horizontal shaft 6 is connected to the vertical worm by setting a gear. The spiral teeth on 12 are engaged for transmission, and one end of the branch vertical shaft 7 is changed in direction by the annular bevel gear set on the integrated flat shaft 6 by setting a bevel gear. The electromagnetic linkage 11 is a prior art instrument. The electromagnetic linkage 11 is provided with a short shaft for axial movement, and an electromagnet device for controlling the axial lifting and lowering of the short shaft by magnetic attraction. The temperature sensor 5 detects the temperature of the air flow rising and discharged through the circular hole at the top of the furnace square channel 1. If the electric heating unit 8 fails to heat, the air flow temperature detected by the temperature sensor 5 is lower than the specified level. The temperature sensor 5 sends a signal to the main terminal of the tempering furnace, thereby controlling the extension of the short shaft on the electromagnetic linkage 11, and the extended short shaft and the vertical worm 12 establish transmission, so that the subsequent transmission enables the docking push device 9 to operate.

[0058] refer to Figure 6 It is understood that the electric heating unit 8 includes:

[0059] A main heating tool 13 distributed at the horizontal air holes of the furnace channel 1, and a temporary heating tool 14 distributed parallel to one side of the main heating tool 13;

[0060] An electrical box 15 for controlling the exchange of positions of the main heating tool 13 and the temporary heating tool 14.

[0061] refer to Figure 8 It is understood that the main heating device 13 and the temporary heating device 14 have the same structure and both include:

[0062] The heating wire 16 is a spiral section, and both ends of the heating wire 16 extend into the electrical box 15;

[0063] There are multiple heat-resistant thin rods 17 evenly arranged inside the spiral section of the heating wire 16, and a horizontal column 18 for supporting the multiple heat-resistant thin rods 17. One end of the heat-resistant thin rod 17 is movably connected to the column hole opened on the horizontal column 18.

[0064] refer to Figure 9 It is understood that the electrical box 15 includes a round box 19 in the shape of a disc shell, an exchange disk 20 that is movably sleeved in a round hole opened on one side of the round box 19, two pairs of conductive springs 21 fixed on the exchange disk 20, a power supply line 22 that is in contact with a pair of conductive springs 21 and energized, and a shaft clamping device 23 that is clamped to a horizontal pile column 18, and the shaft clamping device 23 is distributed between the pair of energized conductive springs 21, the horizontal pile column 18 is movably sleeved in the through hole opened on the exchange disk 20, the end of the heating wire 16 is connected to the conductive spring 21, and the edge of the exchange disk 20 is clamped into the ring groove opened on the round box 19 by setting a convex ring.

[0065] refer to Figure 9 It is understood that the electrical box 15 also includes a drum rack 24 fixed in the middle of the exchange disk 20, and a pressure group 25 whose one end is transmitted to the drum rack 24. The shaft clamping device 23, the drum rack 24 and the pressure group 25 are all distributed in the round box 19, and the other end of the pressure group 25 extends to the outside of the round box 19. The round box 19 is fixed on the furnace square 1.

[0066] refer to Figure 11 It is understood that the shaft clamping device 23 includes an L-shaped fixed plate 27 with one end fixed on the round box 19, a neck shaft 26 movably sleeved in a through hole opened on the L-shaped fixed plate 27, a multi-adjustment disk 29 fixed at one end of the neck shaft 26, a plurality of T-disc columns 30 evenly arranged on the multi-adjustment disk 29, and a clamping spring piece 28 contacted by one end of the T-disc column 30, the other end of the T-disc column 30 is clamped into the ball groove opened on the bottom surface of the horizontal pile column 18, and the T-disc column 30 slides through the column hole opened on the multi-adjustment disk 29, and the other end of the neck shaft 26 is meshed with the annular bevel gear fixed on the branch vertical shaft 7 through the provision of a bevel gear.

[0067] The pressing group 25 includes a direction frame 34 fixed on the round box 19, a J-shaped column 35 sliding through the prism hole opened in the direction frame 34, a return spring 31 contacted by one end of the J-shaped column 35, an extender shaft 32 movably sleeved in the circular hole opened in the direction frame 34, and an extender gear 33 fixed at one end of the extender shaft 32. The extender gear 33 is engaged with the outer ring gear provided on the cylinder frame 24 for transmission. The other end of the extender shaft 32 is engaged with a row of teeth provided on the J-shaped column 35 for transmission by providing a shaft gear. One end of the return spring 31 is fixed to the direction frame 34, and the other end of the J-shaped column 35 extends to the outside of the round box 19.

[0068] The horizontal pushing device 9 includes a first pile block 36 fixed on the furnace square 1, a screw rod 39 with one end movably sleeved in a column hole opened on the first pile block 36, a bridge frame 37 screwed on the screw rod 39, and long sliding rods 38 distributed parallel to both sides of the screw rod 39. One end of the long sliding rod 38 is fixed on the first pile block 36, and the long sliding rod 38 slides through the column hole opened on the bridge frame 37. The screw rod 39 rotates to drive the bridge frame 37 to move horizontally, and a flat plate is set on the bridge frame 37 to push the J-shaped column 35 encountered.

[0069] The pressing device 10 includes a second pile block 40 fixed on the furnace square 1, a tail device 41 supported on the second pile block 40, and a bridge shaft 42 for vertical transmission at one end of the tail device 41. The other end of the tail device 41 establishes transmission with the screw rod 39 in the previous horizontal pushing device 9. The bridge shaft 42 is vertically transmitted with the screw rod 39 in the next horizontal pushing device 9, and the previous horizontal pushing device 9 and the next horizontal pushing device 9 are distributed oppositely. The long sliding rod 38 is fixedly connected to the second pile block 40.

[0070] The tail connecting device 41 includes a tail shaft 48 movably sleeved in a column hole opened on the second pile block 40, a double-action short shaft 46 provided at one end of the tail shaft 48, an S-shaped spring 47 connected between the tail shaft 48 and the double-action short shaft 46, a swimming block 44 supported between the two long slide bars 38, a spring 45 cushioned between the swimming block 44 and the second pile block 40, and a movable shaft gear 43 movably sleeved in a through hole opened in the middle of the swimming block 44, one end of the movable shaft gear 43 is slidably inserted into the gear groove opened at the end of the screw rod 39, and the movable shaft gear 43 is slidably inserted into the gear groove opened at the end of the screw rod 39. The other end of the gear 43 is inserted into the gear groove opened on the double-acting short shaft 46 by axial movement. The spring 45 is sleeved on the long slide rod 38. The long slide rod 38 slides through the column hole opened on the swimming block 44. The tail shaft 48 is slidably inserted into the arc plate groove opened on the outer wall of the double-acting short shaft 46 by providing an arc plate. One end of the bridge shaft 42 is connected to the bevel gear fixed at the other end of the tail shaft 48 through a fixed bevel gear to change direction. The other end of the bridge shaft 42 is also connected to the bevel gear fixed at the end of the screw rod 39 through a fixed bevel gear to change direction.

[0071] The hot air high temperature circulation process for bearing processing includes the following steps:

[0072] Step 1: The conveying trolley carries the bearing workpiece and conveys it through the furnace channel 1. Multiple streams of circulating hot air flow inside the furnace channel 1, and the bearing workpiece passes through the area blown by the multiple streams of circulating hot air one by one to achieve heating;

[0073] Step 2: A single stream of circulating hot air is realized by the rotation of the wind wheel 2. The wind wheel 2 absorbs the hot air in the furnace channel 1 and then diffuses the hot air to the outside of the furnace channel 1. The hot air is separated above the furnace channel 1 and flows to both sides. Then, it passes through the matrix horizontal air holes on both sides of the furnace channel 1 and flows through the interior of the furnace channel 1. The main heating device 13 heats the passing air.

[0074] Step 3: If the main heating tool 13 is damaged, the temperature of the rising hot air gathered at the circular hole at the top of the furnace square channel 1 drops. The temperature sensor 5 sends the detected temperature drop information to the tempering furnace host terminal. The host terminal controls the electromagnetic linkage 11 to be energized. The electromagnetic linkage 11 establishes a transmission between the horizontal push device 9 and the vertical worm 12. The subsequent transmission controls the electric heating units 8 on the transmission path one by one to complete the internal exchange.

[0075] Step 4: The internal exchange of the electric heating unit 8 is specifically the main heating appliance 13 and the temporary heating appliance 14 changing positions, the main heating appliance 13 is automatically powered off, and the temporary heating appliance 14 is powered on and works. If the main heating appliance 13 is in normal state, after the main heating appliance 13 and the temporary heating appliance 14 change positions, the temperature of the hot air supplied to the inside of the furnace square channel 1 stabilizes and remains unchanged. If the main heating appliance 13 is in a faulty and non-heating state, after the main heating appliance 13 and the temporary heating appliance 14 change positions, the temperature of the hot air supplied to the inside of the furnace square channel 1 rises, and finally the temperature of the hot air detected by the temperature sensor 5 returns to normal. At this time, the temperature sensor 5 again sends a normal temperature signal to the host terminal, and the host terminal controls the electromagnetic linkage 11 to cut off the power, and the transmission between the vertical worm 12 and the horizontal push device 9 is disconnected. The faulty main heating appliance 13 is always replaced by the temporary heating appliance 14, and the normal main heating appliance 13 in the previous troubleshooting process will automatically replace the temporary heating appliance 14 again.

[0076] The exchange transmission principle of the main heating tool 13 and the temporary heating tool 14: after the electromagnetic linkage 11 establishes transmission between the vertical worm gear 12 and the horizontal pushing device 9, the screw 39 on the horizontal pushing device 9 rotates, causing the bridge frame 37 to translate, and the translating bridge frame 37 will push the J-shaped column 35 it encounters, and the J-shaped column 35 rises to drive the range extender shaft 32 to rotate, and then the range extender gear 33 drives the drum frame 24 to rotate, and then the exchange disk 20 completes half a circle of rotation, and the exchange disk 20 controls the main heating tool 13 and the temporary heating tool 14 to change positions. After the position is changed, the pair of conductive springs 21 connected to the main heating tool 13 and the power supply line 22 are separated and powered off, and the pair of conductive springs 21 connected to the temporary heating tool 14 and the power supply line 22 are in contact and energized. At the same time, the horizontal pile column 18 on the main heating tool 13 and the shaft clamping device 23 are separated, and the horizontal pile column 18 on the temporary heating tool 14 is clamped with the shaft clamping device 23 after rotating half a circle.

[0077] After the horizontal pile column 18 and the clamping shaft device 23 are clamped, the horizontal pile column 18 continues to rotate, and then the multiple heat-resistant thin rods 17 supported on the horizontal pile column 18 move around inside the spiral section of the heating wire 16. In this way, the multiple heat-resistant thin rods 17 cooperate to stably support the heating wire 16 to prevent the high-temperature heating wire 16 from being deformed by gravity or wind. In addition, the contact point between the heat-resistant thin rods 17 and the heating wire 16 is always changing, thus avoiding the problem of local heat accumulation in the heating wire 16. The horizontal pile column 18 rotates because the vertical worm 12 drives the integrated flat shaft 6, and then drives the neck shaft 26 through the branch vertical shaft 7. Next, the multi-adjustment disk 29 drives the T disk column 30, thereby controlling the rotation of the horizontal pile column 18.

[0078] refer to Figure 13 and Figure 14 It is understood that after the bridge 37 moves to the right, the bridge 37 is no longer screwed to the screw rod 39. At the same time, the bridge 37 pushes the movable block 44, causing the movable shaft gear 43 to move axially. The right end of the movable shaft gear 43 is inserted into the double-acting short shaft 46. In this way, a new transmission path is established. The double-acting short shaft 46, the S-shaped spring 47 and the tail shaft 48 rotate synchronously, and then the next screw rod 39 is transmitted through the bridge shaft 42, causing the next bridge 37 to move, that is, Figure 13 After the middle upper bridge frame 37 moves to the right to the end, the lower bridge frame 37 starts to move to the left.

[0079] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Hot air high temperature circulation tempering furnace for bearing processing, characterized by: Includes: A horizontally laid furnace channel, which is a square cylindrical shell, with multiple matrix-distributed horizontal air holes on both sides of the shell; The wind wheel is distributed above the circular hole opened on the top shell of the furnace square channel; The motor device is connected to the top of the middle vertical shaft of the wind wheel through transmission; Heating integrated mechanisms are provided on both sides of the exterior of the furnace channel, and a speed reduction transmission assembly is provided between the heating integrated mechanism and the central vertical shaft on the wind wheel to establish a linkage; A temperature sensor is provided below the circular hole of the top shell of the furnace square channel; The heating integrated mechanism includes a vertical worm gear for external connection, an integrated horizontal shaft driven by one side of the vertical worm gear, a row of branch vertical shafts driven by one side of the integrated horizontal shaft, and a row of electric heating units driven on each branch vertical shaft. All electric heating units are distributed in a matrix manner. The heating integrated mechanism also includes a row of horizontal pushing devices, an electromagnetic linkage that overlaps and drives between the horizontal pushing devices and the vertical worm gear at the edge position, and a pressure-generating device that drives head to tail between two adjacent horizontal pushing devices. Each horizontal pushing device pushes and controls a row of horizontal electric heating units, and the airflow passing through the horizontal air holes in the square channel of the furnace will be heated by a corresponding electric heating unit.

2. The hot air high temperature circulation tempering furnace for bearing processing according to claim 1, characterized in that: The electric heating unit includes: The main heating tools are distributed at the horizontal air holes of the furnace square channel, and the temporary heating tools are distributed parallel to the main heating tools; An electrical box used to control the exchange position of the main heating tool and the temporary heating tool.

3. The hot air high temperature circulation tempering furnace for bearing processing according to claim 2, characterized in that: The main heating tool and the temporary heating tool have the same structure and both include: The heating wire has a main body of a spiral section, and both ends of the heating wire extend into the electrical box; A plurality of heat-resistant thin rods are evenly arranged in a ring inside the spiral section of the heating wire, and a horizontal column pile is used to support the plurality of heat-resistant thin rods arranged in a ring. One end of the heat-resistant thin rod is movably sleeved in a column hole opened on the horizontal column.

4. The hot air high temperature circulation tempering furnace for bearing processing according to claim 3, characterized in that: The electrical box includes a round box in the shape of a disc shell, an exchange disk movably sleeved in a round hole opened on one side of the round box, two pairs of conductive springs fixed on the exchange disk, a power supply line that is in contact with a pair of conductive springs and energized, and a shaft clamping device clamped to a horizontal pile column, and the shaft clamping device is distributed between the pair of energized conductive springs, the horizontal pile column is movably sleeved in the through hole opened on the exchange disk, and the end of the heating wire is connected to the conductive spring.

5. The hot air high temperature circulation tempering furnace for bearing processing according to claim 4, characterized in that: The electrical box also includes a drum rack fixed in the middle of the exchange disk, and a pressure group with one end transmitting to the drum rack. The shaft clamping device, drum rack and pressure group are all distributed in the round box, and the other end of the pressure group extends to the outside of the round box. The round box is fixed on the square channel of the furnace.

6. The hot air high temperature circulation tempering furnace for bearing processing according to claim 4, characterized in that: The shaft clamping device includes an L-shaped fixed plate with one end fixed on the round box, a neck shaft movably sleeved in a through hole provided in the L-shaped fixed plate, a multi-adjustment disk fixed at one end of the neck shaft, a plurality of T-disc columns evenly arranged on the multi-adjustment disk, and a clamping spring sheet in contact with one end of the T-disc column. The other end of the T-disc column is clamped into a ball groove provided on the bottom surface of the horizontal pile column, and the T-disc column slides through the column hole provided on the multi-adjustment disk. The other end of the neck shaft is meshed with the annular bevel gear fixed on the branch vertical shaft for transmission through a bevel gear.

7. The hot air high temperature circulation tempering furnace for bearing processing according to claim 5, characterized in that: The pressing group includes a steering frame fixed on the round box, a J-shaped column sliding through the prism hole opened in the steering frame, a return spring contacted by one end of the J-shaped column, an extender shaft movably sleeved in the round hole opened in the steering frame, and an extender gear fixed at one end of the extender shaft, the extender gear and the outer gear ring provided on the drum frame are engaged for transmission, the other end of the extender shaft is engaged for transmission with a row of teeth provided on the J-shaped column by providing a shaft gear, one end of the return spring is fixed to the steering frame, and the other end of the J-shaped column extends to the outside of the round box.

8. The hot air high temperature circulation tempering furnace for bearing processing according to claim 7, characterized in that: The horizontal pushing device includes a first pile block fixed on the furnace square channel, a screw rod with one end movably sleeved in a column hole opened on the first pile block, a bridge frame screwed on the screw rod, and long sliding rods distributed parallel to both sides of the screw rod. One end of the long sliding rod is fixed on the first pile block, and the long sliding rod slides through the column hole opened on the bridge frame. The screw rod rotates to drive the bridge frame to move horizontally, and a flat plate is set on the bridge frame to push the J-shaped column encountered.

9. The hot air high temperature circulation tempering furnace for bearing processing according to claim 8, characterized in that: The pressing device includes a second pile block fixed on the furnace square, a tail connection device supported on the second pile block, and a bridge shaft with vertical transmission at one end of the tail connection device. The other end of the tail connection device establishes transmission with the screw rod in the previous horizontal pushing device. The bridge shaft is vertically transmitted with the screw rod in the next horizontal pushing device, and the previous horizontal pushing device and the next horizontal pushing device are distributed in opposite directions. The long sliding rod is fixedly connected to the second pile block.

10. The hot air high temperature circulation tempering furnace for bearing processing according to claim 9, characterized in that: The spring is sleeved on the long slide bar, and the long slide bar slides through the column hole opened on the slide block. The tail shaft is slidably inserted into the arc plate groove opened on the outer wall of the double-acting short shaft by setting an arc plate on the tail shaft. One end of the bridge shaft is transmitted to the bevel gear fixed to the other end of the tail shaft through a fixed bevel gear, and the other end of the bridge shaft is also transmitted to the bevel gear fixed to the end of the screw rod through a fixed bevel gear.

11. A hot air high temperature circulation process for bearing processing, using the hot air high temperature circulation tempering furnace for bearing processing according to claim 1, characterized in that: The following steps are involved: Step 1: The conveyor trolley carries the bearing workpiece through the furnace channel. Multiple streams of circulating hot air flow inside the furnace channel, and the bearing workpiece passes through the area blown by the multiple streams of circulating hot air one by one to achieve heating. Step 2: The single-stream circulating hot air is realized by the rotation of the wind wheel. The wind wheel absorbs the hot air in the furnace channel and then diffuses the hot air to the outside of the furnace channel. The hot air is separated above the furnace channel and flows to both sides. Then it passes through the matrix horizontal air holes on both sides of the furnace channel and flows through the interior of the furnace channel. The main heating tool heats the passing air. Step 3: If the main heating tool is damaged, the temperature of the rising hot air gathered at the circular hole on the top of the furnace square channel will drop. The temperature sensor will send the detected temperature drop information to the tempering furnace host terminal. The host terminal will control the electromagnetic linkage to energize. The electromagnetic linkage will establish a transmission between the horizontal push device and the vertical worm gear. The subsequent transmission will control the electric heating units on the transmission path one by one to complete the internal exchange. Step 4: The internal exchange of the electric heating unit is specifically to switch positions of the main heating appliance and the temporary heating appliance, the main heating appliance is automatically powered off, and the temporary heating appliance is powered on. If the main heating appliance is in normal state, after the main heating appliance and the temporary heating appliance switch positions, the temperature of the hot air supplied to the inside of the furnace square channel remains stable. If the main heating appliance is in a faulty and non-heating state, after the main heating appliance and the temporary heating appliance switch positions, the temperature of the hot air supplied to the inside of the furnace square channel rises, and finally the temperature of the hot air detected by the temperature sensor returns to normal. At this time, the temperature sensor sends a normal temperature signal to the host terminal again, and the host terminal controls the electromagnetic linkage to cut off the power, and the transmission between the vertical worm and the horizontal push device is disconnected. The faulty main heating appliance is always replaced by the temporary heating appliance, and the normal main heating appliance in the previous troubleshooting process will automatically replace the temporary heating appliance again.

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