CN212179545U - Box type resistance furnace for improving mechanical property of metal - Google Patents

Abstract

The utility model relates to a box resistance furnace for improving metal mechanical property, which belongs to the technical field of workpiece heat treatment and aims to solve the problem that the quality of a workpiece is affected after heat treatment due to uneven heating, and comprises a shell, a furnace chamber, a heating body and a furnace door, and also comprises two baffles arranged on the inner bottom wall of the furnace chamber, wherein the opposite side walls of the two baffles are rotatably connected with a plurality of rolling shafts, the length direction of each rolling shaft is parallel to the feeding direction, and the outer side wall of one side of the shell opposite to the furnace door is provided with a driving component for driving the rolling shafts to rotate; after a worker places a workpiece on two adjacent rollers, the rollers are driven to rotate by the driving assembly, so that the workpiece rotates stably along with the rollers, the workpiece is heated uniformly, and the quality of the workpiece after heat treatment is improved; and is favorable for improving the mechanical property of the processed metal workpiece.

Description

Box type resistance furnace for improving mechanical property of metal

Technical Field

The utility model belongs to the technical field of the heat treatment of work piece technique and specifically relates to a box resistance furnace for improving metal mechanical properties.

Background

The box-type resistance furnace is a common electric furnace, mainly comprises a furnace body and a control box, is mostly in an internal heating working mode, adopts refractory materials and heat-insulating materials as a furnace lining, and utilizes current to carry out normalizing, annealing, quenching and other heat treatments on metal workpieces with smaller sizes, such as shaft sleeves.

The traditional Chinese utility model with the authorization bulletin number of CN209371781U discloses a box type resistance furnace, which comprises a shell and a furnace chamber, wherein a heating body for heating a workpiece is arranged in the furnace chamber, the outer surface of the shell is provided with a furnace door, the outer surface of the furnace door close to the direction of the furnace chamber is provided with an antiskid bulge, the inner side wall of a furnace chamber is provided with an antiskid groove corresponding to the antiskid bulge, the antiskid groove is far away from one end of the bottom wall of the furnace chamber, a heat insulation plate is arranged between the furnace chamber and the furnace door, and the heat insulation plate is rotationally connected; the box type resistance furnace has good heat preservation performance and can reduce heat loss.

However, the above prior art solutions have the following drawbacks: when the box-type resistance furnace is used for heating the workpiece, the workpiece is placed on the heating body in a standing mode, and the heat received by the bottom of the workpiece is more than that received by the top of the workpiece, namely the workpiece is heated unevenly, and the quality of the workpiece after heat treatment is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a box resistance furnace for improving metal mechanical property, which solves the problem that the workpiece influences the quality after heat treatment because of uneven heating.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a box resistance furnace for improving metal mechanical properties, includes shell, furnace chamber, sets up heat-generating body and furnace gate on the bottom wall in the furnace chamber, still including setting up two baffles on the bottom wall in the furnace chamber, two it is connected with a plurality of rollers to rotate on the relative lateral wall of baffle, the length direction of roller is parallel with the direction of feed, be equipped with on the lateral wall of the relative furnace gate one side of shell and be used for driving roller bearing pivoted drive assembly.

By adopting the technical scheme, after a worker places a workpiece on two adjacent rollers, the rollers are driven to rotate by the driving assembly, so that the workpiece stably rotates along with the rollers, the workpiece is uniformly heated, and the quality of the workpiece after heat treatment is improved; and is favorable for improving the mechanical property of the processed metal workpiece.

The utility model discloses further set up to: the utility model discloses a furnace door, including the relative furnace door of shell, the lateral wall of the relative furnace door of shell is equipped with the backup pad along the horizontal direction extension on the lateral wall of the relative furnace door one side of shell, be equipped with the lug on the lateral wall of the relative furnace door one side of shell, drive assembly includes driving motor and axis of rotation, driving motor sets up on the upper surface of backup pad, driving motor's motor shaft and rotation axis connection, be equipped with a plurality of worms along its length direction in the axis of rotation, driving motor's one end is kept away from to the axis of rotation is rotated and is connected on the lateral wall of lug, the one end that the furnace door was kept away from to the roller.

By adopting the technical scheme, when the workpiece is heated, the driving motor is utilized to drive the rotating shaft to rotate, the rotating shaft drives the worm to rotate, and the worm wheel are meshed for transmission, so that the worm wheel drives the rolling shaft to rotate, the rolling shaft drives the workpiece to stably rotate, the workpiece is uniformly heated, and the quality of the workpiece after heat treatment is improved.

The utility model discloses further set up to: the roller comprises a bearing roller and a heat insulation roller, the bearing roller is positioned in the furnace cavity, one end of the heat insulation roller is connected with the bearing roller, and the other end of the heat insulation roller penetrates through the shell and is connected with the worm wheel.

By adopting the technical scheme, because the temperature in the furnace cavity is higher, the end of the roller extending out of the shell has higher temperature, and the matching of the bearing roller and the heat-insulating roller realizes uniform heating of the workpiece and simultaneously ensures that the heat cannot be lost too much; and the safety of workers in the operation process is ensured.

The utility model discloses further set up to: the roller bearing is hollow, a plurality of small ventilation holes are formed in the side wall of the bearing roller bearing, one end, away from the bearing roller bearing, of the heat insulation roller bearing is communicated with an air inlet pipe, and one end, away from the heat insulation roller bearing, of the air inlet pipe is externally connected with an air pump.

Through adopting above-mentioned technical scheme, utilize the cooperation of air pump and air-supply line, to the inside air supply of roller bearing, through the aperture of ventilating for the speed of flow of stove air to make the heat distribution in the stove even, and then make the work piece thermally equivalent.

The utility model discloses further set up to: the air-supply line includes honeycomb duct and a plurality of shunt tubes, the one end of honeycomb duct links to each other with the air pump, the other end and a plurality of shunt tubes intercommunication of honeycomb duct, the shunt tubes are kept away from the one end and the thermal-insulated roller bearing intercommunication of honeycomb duct.

By adopting the technical scheme, the possibility of scattering of the air inlet pipe is reduced by matching the flow guide pipe with the flow dividing pipe, so that the regularity of the air inlet pipe is improved.

The utility model discloses further set up to: the inner top wall of the furnace chamber is rotatably connected with a rotating shaft, the rotating shaft is connected with rotating blades, the outer top wall of the shell is provided with a micro motor, and a motor shaft of the micro motor penetrates through the top wall of the shell and is connected with the rotating shaft.

Through adopting above-mentioned technical scheme, utilize micro motor drive pivot to rotate, the pivot drives rotating vane rotatory to further accelerate the circulation of air speed in the furnace chamber, and then make the work piece be heated more evenly.

The utility model discloses further set up to: the furnace is characterized in that a bearing frame is arranged on the bottom wall in the furnace cavity, the baffle is positioned on the top wall of two side edges opposite to the material loading direction of the bearing frame, the two side edges of the bearing frame parallel to the material loading direction are connected on the inner side wall of the shell in a sliding manner, and a power assembly for driving the bearing frame to slide along the material loading direction is arranged on the supporting plate.

By adopting the technical scheme, the temperature of the workpiece after heat treatment is high, a worker can take the workpiece out of the furnace cavity after cooling for a period of time, the power assembly is utilized to drive the bearing frame to slide towards the furnace door along the feeding direction, the cooling speed of the workpiece is accelerated, the worker can conveniently place the subsequent workpiece to be heated on the roller, and therefore the heat treatment efficiency of the workpiece is improved; and is favorable for ensuring the operation safety of workers.

The utility model discloses further set up to: the utility model discloses a relative furnace gate of shell, including relative furnace gate, power component, servo motor, screw rod, bearing frame, shell, horizontal direction, power component, servo motor sets up on the fixing base, servo motor's motor shaft is connected with the screw rod, threaded connection has the catch bar on the screw rod, all be connected with the connecting rod on the lateral wall at the both ends of catch bar, the lateral wall on one side of the relative material loading of shell is stretched out on the both sides limit that the bearing frame is on a parallel with the material loading direction, the both ends that the bearing frame stretches out the shell are connected with the connecting rod through thermal-insulated coupling assembling.

By adopting the technical scheme, when a worker needs to take out a heated workpiece, the screw rod is driven to rotate by the servo motor, so that the bearing frame stably slides towards the outside of the furnace door; through thermal-insulated coupling assembling, reduce the heat loss in the furnace chamber.

The utility model discloses further set up to: the heat insulation connecting assembly comprises two flanges which are respectively sleeved on the side edges of the connecting rod and the bearing frame, a high-temperature resistant ceramic fiber cotton layer is clamped between the flanges, and the flanges sequentially penetrate through the two flanges and are in threaded connection with the two flanges through bolts.

By adopting the technical scheme, the heat transfer between the bearing frame and the connecting rod is blocked by utilizing the high-temperature resistant ceramic fiber cotton layer, so that the heat loss in the furnace is reduced; through the cooperation of flange and bolt, make things convenient for the workman to stretch out the both ends and the connecting rod zonulae occludens of shell with the bearing frame, stability when guaranteeing the bearing frame and sliding.

To sum up, the utility model discloses a beneficial technological effect does:

1. uniformly heating: the driving motor is used for driving the rotating shaft, the worm wheel and the rolling shaft to rotate in sequence, so that the rolling shaft drives the workpiece to rotate, the workpiece is uniformly heated, and the quality of the workpiece after heat treatment is improved; the micro motor is used for driving the rotating shaft to rotate, the rotating shaft drives the rotating blades to rotate, the air flowing speed in the furnace cavity is increased, the heat in the furnace cavity is distributed more uniformly, and the quality of the heated workpiece is further improved;

2. the safety is good: through the matching of the two flanges, the fixing bolt and the high-temperature resistant ceramic fiber cotton layer, the heat transfer between the bearing frame and the connecting rod is favorably reduced, so that the heat loss in the furnace cavity is reduced, and the safety of workers in the operation process is further ensured; after the workpiece is heated, the screw rod is driven to rotate by the servo motor, so that the connecting rod pushes the bearing frame to slide towards the furnace door, the cooling speed of the workpiece is accelerated, a worker does not need to stretch hands into the furnace cavity, and the safety of the worker in putting and taking the workpiece is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

Fig. 2 is a schematic structural diagram for embodying the driving assembly.

Fig. 3 is a schematic structural view for showing the connection relationship between the roller and the air inlet pipe.

FIG. 4 is a schematic structural diagram illustrating the connection relationship of the support frame, the power assembly and the thermal insulation connection assembly.

In the figure, 1, a housing; 2. a furnace chamber; 3. a heating element; 4. a furnace door; 5. a baffle plate; 6. a roller; 61. a carrying roller; 611. a vent aperture; 62. a heat-insulating roller; 7. a support plate; 8. a drive assembly; 81. a drive motor; 82. a rotating shaft; 83. a worm; 84. a worm gear; 9. an air inlet pipe; 91. a flow guide pipe; 92. a shunt tube; 10. an air pump; 11. a rotating shaft; 12. a rotating blade; 13. a micro motor; 14. a bearing frame; 141. an extension rod; 15. a power assembly; 151. a servo motor; 152. a screw; 153. a push rod; 154. a connecting rod; 16. a thermally insulating connection assembly; 161. a flange; 162. a high temperature resistant ceramic fiber cotton layer; 163. a bolt; 17. a lug; 18. a fixed seat.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a box resistance furnace for improving metal mechanical properties, the problem of work piece influence heat treatment back quality because of being heated unevenly is solved, this box resistance furnace includes shell 1, furnace chamber 2, heat-generating body 3 and furnace gate 4, heat-generating body 3 sets up on the interior diapire of furnace chamber 2, it is connected with bearing frame 14 to slide on the inboard wall of furnace chamber 2 bottom, the shape of bearing frame 14's cross section is the rectangle, all be equipped with baffle 5 on the roof of the relative material loading direction's of bearing frame 14 both sides limit, the length of two baffle 5 is close with furnace chamber 2's length, it is connected with a plurality of roller bearings 6 to rotate on the relative lateral wall of two baffle 5, roller bearing 6 and baffle 5 are made by high temperature resistant copper alloy material, be equipped with on the relative lateral wall of furnace gate 4 one side of shell 1 and are used for driving roller bearing 6 pivoted drive assembly 8.

Referring to fig. 1, when a worker needs to heat a workpiece, the workpiece is placed on two adjacent rollers 6, and the rollers 6 are driven to rotate by a driving assembly 8, so that the rollers 6 drive the workpiece to rotate, the workpiece is uniformly heated, and the quality of the workpiece after heat treatment is improved; and is beneficial to improving the mechanical property of the metal workpiece.

Referring to fig. 1, a micro motor 13 is arranged on the top wall of the box body, a motor shaft of the micro motor 13 penetrates through the shell 1 to be connected with a rotating shaft 11, and a plurality of rotating blades 12 are arranged on the side wall of the rotating shaft 11; when the work piece heats in furnace chamber 2, utilize micro motor 13 drive pivot 11 to rotate, rotate and drive rotating vane 12 and rotate for the flow rate of air in furnace chamber 2, thereby make the heat in furnace chamber 2 distribute more evenly, and then make the work piece be heated more evenly, be favorable to promoting the quality after the work piece thermal treatment.

Referring to fig. 2, a supporting plate 7 and a lug 17 are arranged on the outer side wall of one side of the housing 1 opposite to the oven door 4 (fig. 1) and extend outwards along the horizontal direction, the driving assembly 8 comprises a driving motor 81 and a rotating shaft 82, the driving motor 81 is fixed on the upper surface of the supporting plate 7, a motor shaft of the driving motor 81 is connected with the rotating shaft 82, a plurality of worms 83 are sleeved on the side wall of the rotating shaft 82, one end of the rotating shaft 82 far away from the driving motor 81 is rotatably connected on the side wall of the lug 17, one end of the roller 6 far away from the oven door 4 penetrates through the housing 1, a worm wheel 84 is sleeved on the side wall of one end of the; when a workpiece is heated, the driving motor 81 is used for driving the rotating shaft 82 to rotate, the rotating shaft 82 drives the worm 83 to rotate, the worm 83 is in meshed transmission with the worm wheel 84, the worm wheel 84 drives the rolling shaft 6 to rotate, so that the rolling shaft 6 drives the workpiece to rotate, and the workpiece is uniformly heated.

Referring to fig. 3, the roller 6 includes a receiving roller 61 and a heat insulation roller 62, the receiving roller 61 and the heat insulation roller 62 are both hollow, the receiving roller 61 is located in the oven cavity 2 (fig. 1), a plurality of small ventilation holes 611 are formed in the side wall of the receiving roller 61, one end of the heat insulation roller 62 is connected with the receiving roller 61, one end of the heat insulation roller 62 connected with the receiving roller 61 is located in the oven cavity 2, and the other end of the heat insulation roller 62 penetrates through the outer shell 1 (fig. 1) and is connected with the worm gear 84; when the workpiece is heated, the temperature in the furnace chamber 2 is higher, and the heat loss in the furnace chamber 2 is reduced by the matching of the bearing roller 61 and the heat insulation roller 62.

Referring to fig. 3, one end of the heat-insulating roller 62, which is far away from the receiving roller 61, is rotatably communicated with an air inlet pipe 9, the air inlet pipe 9 includes a flow guide pipe 91 and a plurality of flow dividing pipes 92, one end of the flow guide pipe 91 is communicated with the plurality of flow dividing pipes 92, the other end of the flow guide pipe 91 is externally connected with an air pump 10, the air pump 10 is fixed on the outer top wall of the housing 1, and one end of the flow dividing pipe 92, which is far away from the flow guide pipe 91.

Referring to fig. 3, when the workpiece is heated, the air pump 10 supplies air into the air inlet pipe 9, and the air enters the furnace chamber 2 through the small ventilation holes 611, so that the flow of heat in the furnace chamber 2 is accelerated, the heat is more uniformly distributed, the workpiece is uniformly heated, and the quality of the workpiece after heat treatment is further ensured.

Referring to fig. 4, an extension rod 141 extends along a length direction of one end of the support frame 14, which is far away from the oven door 4 (fig. 1) at two side edges parallel to the feeding direction, a fixing seat 18 extends outwards along a horizontal direction on an outer side wall of one side of the housing 1 opposite to the oven door 4 (fig. 1), a power assembly 15 for driving the extension rod 141 to slide in a reciprocating manner along the feeding direction is arranged on an upper surface of the fixing seat 18, the power assembly 15 includes a servo motor 151 and a screw 152, the servo motor 151 is fixed on the upper surface of the fixing seat 18, a motor shaft of the servo motor 151 is connected with the screw 152, a push rod 153 is connected to the screw 152 through a thread, connecting rods 154 are connected to two ends of the push rod 153 towards the side wall of the housing 1, and one end of the connecting rod 154.

Referring to fig. 4, after the workpiece is heated, the screw 152 is driven by the servo motor 151 to rotate, so that the connecting rod 154 pushes the rod 153 to push the extension rod 141, and the supporting frame 14 moves toward the oven door 4 along the inner side wall of the oven cavity 2, thereby increasing the cooling speed of the workpiece, facilitating the worker to heat the subsequent workpiece, and further improving the heat treatment efficiency of the workpiece.

Referring to fig. 4, the heat insulation connection assembly 16 includes two flanges 161, one of the flanges 161 is sleeved on the side wall of the connecting rod 154, the other flange 161 is sleeved on the side wall of the extension rod 141, a high temperature resistant ceramic fiber cotton layer 162 is sandwiched between the two flanges 161, and the high temperature resistant ceramic fiber cotton layer 162 is formed by cutting a type 1260 ceramic fiber blanket manufactured by luyang brand; when workers need to connect the connecting rod 154 and the extension rod 141 together, the high-temperature resistant ceramic fiber cotton layer 162 is clamped between the two flanges 161, passes through the two flanges 161 for times by using the bolts 163 and is in threaded connection with the two flanges 161, and the connecting rod 154 is tightly connected with the extension rod 141, so that heat transfer between the extension rod 141 and the connecting rod 154 is blocked, and the loss of heat in the furnace chamber 2 is reduced; and is favorable for ensuring the safety of workers during operation.

The implementation principle of the embodiment is as follows: when a worker heats a workpiece by using the box type resistance furnace, the workpiece is firstly placed on two adjacent rollers 6, and the driving motor 81 is used for sequentially driving the rotating shaft 82, the worm 83 and the worm wheel 84 to rotate, so that the worm wheel 84 drives the rollers 6 to rotate, the workpiece is rotated between the two adjacent rollers 6, and the workpiece is uniformly heated; meanwhile, air is conveyed into the furnace chamber 2 by the air pump 10 and the air inlet pipe 9, the rotating shaft 82 is driven to rotate by the micro motor 13, and the rotating shaft 82 drives the rotating blades 12 to rotate, so that the flowability of heat in the furnace chamber 2 is improved, the workpiece is heated more uniformly, and the quality of the workpiece after heat treatment is further ensured; and is beneficial to improving the mechanical property of the processed metal workpiece; after the workpiece is heated, the screw 152 is driven to rotate by the servo motor 151, so that the push rod 153 pushes the connecting rod 154, and the connecting rod 154 pushes the bearing frame 14 to move towards the outside of the furnace door 4, thereby being beneficial to accelerating the cooling speed of the workpiece and improving the heat treatment efficiency of the workpiece; and is favorable for ensuring the safety of workers during operation.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (9)

1. The utility model provides a box resistance furnace for improving metal mechanical properties, includes shell (1), furnace chamber (2), sets up heat-generating body (3) and furnace gate (4) on bottom wall in furnace chamber (2), its characterized in that: still including setting up two baffle (5) on the bottom wall in furnace chamber (2), two rotate on the relative lateral wall of baffle (5) and be connected with a plurality of roller bearings (6), the length direction and the direction of feed of roller bearing (6) are parallel, be equipped with on the lateral wall of the relative furnace door (4) one side of shell (1) and be used for driving roller bearing (6) pivoted drive assembly (8).

2. A box-type electric resistance furnace for improving the mechanical properties of metals according to claim 1, characterized in that: the oven door is characterized in that a supporting plate (7) extends along the horizontal direction on the outer side wall of one side of the outer shell (1) opposite to the oven door (4), a lug (17) is arranged on the outer side wall of one side of the outer shell (1) opposite to the oven door (4), a driving assembly (8) comprises a driving motor (81) and a rotating shaft (82), the driving motor (81) is arranged on the upper surface of the supporting plate (7), a motor shaft of the driving motor (81) is connected with the rotating shaft (82), a plurality of worms (83) are arranged on the rotating shaft (82) along the length direction of the rotating shaft, one end, far away from the driving motor (81), of the rotating shaft (82) is rotatably connected onto the side wall of the lug (17), one end, far away from the oven door (4), of the roller (6) penetrates through the side wall of the outer shell (1) and is rotatably connected with the outer shell (, the worm wheel (84) is meshed with the worm (83).

3. A box-type electric resistance furnace for improving the mechanical properties of metals according to claim 2, characterized in that: the roller (6) comprises a bearing roller (61) and a heat insulation roller (62), the bearing roller (61) is located in the oven cavity (2), one end of the heat insulation roller (62) is connected with the bearing roller (61), and the other end of the heat insulation roller (62) penetrates through the outer shell (1) and is connected with the worm wheel (84).

4. A box-type electric resistance furnace for improving the mechanical properties of metals according to claim 3, characterized in that: the roller (6) is hollow, a plurality of small ventilation holes (611) are formed in the side wall of the bearing roller (61), one end, away from the bearing roller (61), of the heat insulation roller (62) is communicated with an air inlet pipe (9), and one end, away from the heat insulation roller (62), of the air inlet pipe (9) is externally connected with an air pump (10).

5. A box-type electric resistance furnace for improving the mechanical properties of metals according to claim 4, characterized in that: the air-supply line (9) include honeycomb duct (91) and a plurality of shunt tubes (92), the one end of honeycomb duct (91) links to each other with air pump (10), the other end and a plurality of shunt tubes (92) intercommunication of honeycomb duct (91), the one end and thermal-insulated roller bearing (62) intercommunication of honeycomb duct (91) are kept away from in shunt tubes (92).

6. A box-type electric resistance furnace for improving the mechanical properties of metals according to claim 1, characterized in that: the utility model discloses a rotary oven, including furnace chamber (2), rotation is connected with pivot (11) on the interior roof of furnace chamber (2), be connected with rotating vane (12) on pivot (11), be equipped with micro motor (13) on the outer roof of shell (1), the motor shaft of micro motor (13) passes shell (1) roof and is connected with pivot (11).

7. A box-type electric resistance furnace for improving the mechanical properties of metals according to claim 2, characterized in that: be equipped with bearing frame (14) on the bottom wall in furnace chamber (2), baffle (5) are located bearing frame (14) and the roof on the relative both sides limit of material loading direction, bearing frame (14) are on a parallel with the both sides limit of material loading direction and slide and connect on the inside wall of shell (1), be equipped with on backup pad (7) drive bearing frame (14) along power component (15) that the material loading direction slided.

8. A box-type electric resistance furnace for improving the mechanical properties of metals according to claim 7, characterized in that: the utility model discloses a stove door, including shell (1), relative furnace door (4), lateral wall, power component (15) are equipped with fixing base (18) along the horizontal direction extension on the lateral wall of one side of shell (1), power component (15) include servo motor (151) and screw rod (152), servo motor (151) set up on fixing base (18), the motor shaft and screw rod (152) of servo motor (151) are connected, threaded connection has catch bar (153) on screw rod (152), all be connected with connecting rod (154) on the lateral wall at the both ends of catch bar (153), the lateral wall on one side of shell (1) relative material loading is stretched out on the both sides limit that bearing frame (14) are on a parallel with the material loading direction, the both ends that bearing frame (14) stretch out shell (1) are connected with connecting rod (154) through thermal-insulated connection subassembly.

9. A box-type electric resistance furnace for improving the mechanical properties of metals according to claim 8, characterized in that: thermal-insulated coupling assembling (16) establish flange (161) on connecting rod (154) and bearing frame (14) side including two respectively, two press from both sides between flange (161) and be equipped with high temperature resistant ceramic fiber cotton layer (162), utilize bolt (163) to pass two flanges (161) in order and with two flange (161) threaded connection.

Images