An automated roller heating furnace

Abstract

The present invention relates to the technical field of workpiece heating, and in particular to an automated roller heating furnace, comprising a cylindrical heating furnace, wherein a feeding frame and a discharging frame are fixedly connected on both sides of the cylindrical heating furnace, a rotating groove is provided at one end of the interior of the cylindrical heating furnace, a rotating plate is rotatably connected to the interior of the rotating groove, two groups of clamping rollers are arranged at one end of the rotating plate, each group of the clamping rollers has two clamping rollers, and a driving rotating mechanism is connected to the rotating plate; the present invention causes a sheet metal part to continuously rotate inside the cylindrical heating furnace through the action of a driving rotating mechanism and a reciprocating moving mechanism, and causes the limiting contact position of the clamping roller and the sheet metal part to continuously change, thereby reducing the heating requirements of the furnace space and the number of clamping rollers for heating while ensuring the heating uniformity of the sheet metal part, thereby reducing the heating cost and equipment manufacturing cost during the heating process of the sheet metal part.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece heating, and in particular to an automated roller heating furnace. Background Art

[0002] The roller hearth furnace is a heating furnace with a chamber-shaped furnace chamber. The furnace bottom is composed of furnace rollers and a transmission mechanism. The workpiece is moved out of the furnace from the feeding end by the rotation of the furnace rollers. The roller hearth heating furnace allows the workpiece to move continuously through the rotation of the furnace rollers, so there is no fixed contact point with the rollers, ensuring uniform heating.

[0003] The patent application document with publication number CN116182553A discloses a composite roller-type roller bottom heating furnace, which is provided with a furnace body, including: multiple steel rollers, multiple ceramic rollers, and multiple groups of eddy current cooling bearing seats; the multiple steel rollers are arranged in parallel in the material heating area of ​​the furnace body; the multiple ceramic rollers are arranged in parallel in the fast discharge area of ​​the furnace body; the multiple steel rollers are respectively supported by multiple groups of eddy current cooling bearing seats.

[0004] When sheet metal parts are heated by a roller heating furnace, they are usually supported and rotated by multiple rollers to heat and move the sheet metal parts in the furnace before being discharged. However, during the moving heating process of the sheet metal parts, in order to ensure sufficient heating of the sheet metal parts and prevent fixed contact between the rollers and the sheet metal parts, the heating furnace needs to be of sufficient length to ensure the moving space of the sheet metal parts, thereby ensuring the heating efficiency of the sheet metal parts, and at the same time, a sufficient number of rollers are required to support and transmit the sheet metal parts. The extension of the internal space of the heating furnace requires an increase in heating points and an improvement in heating efficiency, thereby increasing the heating cost during use and the equipment manufacturing cost. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automated roller heating furnace.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: an automated roller heating furnace, comprising a cylindrical heating furnace, wherein a feeding frame and a discharging frame are fixedly connected to each other on both sides of the cylindrical heating furnace, a rotating groove is provided at one end of the interior of the cylindrical heating furnace, a rotating plate is rotatably connected to the interior of the rotating groove, two groups of clamping rollers are arranged at one end of the rotating plate, and the number of the clamping rollers in each group is two, a driving rotation mechanism is connected to the rotating plate, and a reciprocating movement mechanism is connected to the clamping roller;

[0007] The cylindrical heating furnace is connected to a movable sealing mechanism, a plurality of drive rollers are arranged inside the discharge frame, a rotating conveying mechanism is connected to the drive rollers, a pushing feed mechanism is connected to the feed frame, a plurality of gas pipes are fixedly connected to the surface of the cylindrical heating furnace along the circumferential direction, a plurality of ignition valves are fixedly connected to the gas pipes, the ignition valves are all fixedly connected to the cylindrical heating furnace, and an air intake pipe and an exhaust pipe are fixedly connected to the top and bottom of the cylindrical heating furnace, respectively.

[0008] Preferably, the driving rotating mechanism includes an outer gear ring, which is fixedly connected to an end of the rotating plate away from the clamping roller. A first motor is fixedly installed on the cylindrical heating furnace. The output shaft of the first motor passes through the cylindrical heating furnace and extends to the inside of the rotating groove and is fixedly connected to a first gear. The first gear is meshed with the outer gear ring. A movable groove is opened on the rotating plate, and two movable bars are slidably connected to the inside of the movable groove. Two connecting shafts are fixedly connected to the movable bars, and the connecting shafts are rotatably connected to the corresponding inside of the clamping roller.

[0009] Preferably, the reciprocating mechanism includes a guide plate, which is fixedly connected to the inside of the cylindrical heating furnace and located at the other end of the clamping roller, and two spiral guide grooves are circumferentially provided on the guide plate, and two fixed plates are provided at one end of the guide plate, and guide pins are fixedly connected to the fixed plate, and the two guide pins are respectively located at one end of the corresponding spiral guide groove close to the axis center, and one end of the two connecting shafts in the same group are fixedly connected to the corresponding fixed plate.

[0010] Preferably, the movable sealing mechanism includes two groups of arc plates, which are respectively located at the fixed connection points between the feed frame and the discharging frame and the cylindrical heating furnace, and the number of arc plates in each group is two. The ends of the two arc plates in the same group that are away from each other pass through the cylindrical heating furnace and extend to the outside of the cylindrical heating furnace and are fixedly connected to an L-shaped bracket. Two racks are provided at the bottom of the feed frame and the discharging frame, and the racks are fixedly connected to the corresponding L-shaped brackets. Two second motors are fixedly installed on the cylindrical heating furnace, and the output shafts of the second motors are fixedly connected to second gears, which are meshed with the corresponding two racks.

[0011] Preferably, the rotating conveying mechanism includes multiple rotating shafts, and the multiple rotating shafts are rotatably connected to the inside of the discharging frame. The transmission rollers are respectively fixedly connected to the corresponding rotating shafts, and one end of the rotating shaft is fixedly connected to a third gear. One side of the discharging frame is rotatably connected to multiple matching gears, and the matching gears are meshed with two adjacent third gears. A third motor is fixedly installed on the other side of the discharging frame, and the output shaft of the third motor is fixedly connected to one of the rotating shafts.

[0012] Preferably, the pushing feeding mechanism includes a plurality of rotating short rollers, and the plurality of rotating short rollers are respectively rotatably connected to both sides of the inside of the feeding frame, a rectangular groove is opened at the bottom of the feeding frame, and both sides of the rectangular groove are fixedly connected with a strip frame, the inside of the strip frame is slidably connected with a sliding block, and the top of the sliding block is fixedly connected with a pushing plate, the inside of the strip frame is rotatably connected with a lead screw, and the sliding block is threadedly connected to the lead screw, a fourth motor is fixedly installed at one end of the strip frame, and the output shaft of the fourth motor is fixedly connected to one end of the lead screw, and two groups of limiting rollers are rotatably connected to the inside of the feed frame close to the cylindrical heating furnace, and the number of limiting rollers in each group is two and they are arranged up and down.

[0013] Preferably, an L-shaped placement rack is fixedly connected to the feed frame, the L-shaped placement rack is tilted, a limiting mechanism is connected to the L-shaped placement rack, and a flip loading mechanism is connected to the feed frame.

[0014] Preferably, the flip feeding mechanism includes a fixed block, which is fixedly connected between the two strip frames, and an arc rod is slidably connected to the fixed block, and one end of the arc rod located above the fixed block is fixedly connected to an electric suction cup, and one end of the arc rod located below the fixed block is fixedly inserted with a round rod, and a first hydraulic cylinder is fixedly installed on the feeding frame, and two strip groove rails are fixedly connected to the piston shaft of the first hydraulic cylinder, and the two ends of the round rod are respectively located inside the corresponding strip groove rails.

[0015] Preferably, the limiting mechanism includes two connecting plates, the two connecting plates are fixedly connected to one side of the L-shaped placement frame away from the electric suction cup, two light rods are fixedly connected between the two connecting plates, two mounting blocks are slidably inserted on the two light rods, the mounting blocks are fixedly connected to limiting buckles, two springs are sleeved on the light rods, the springs are fixedly connected between the mounting blocks and adjacent connecting plates, the bottoms of the two mounting blocks are fixedly connected to guide brackets, one ends of the two guide brackets are provided with guiding slopes, the bottom of the electric suction cup is fixedly connected to an extrusion bracket, and one end of the extrusion bracket is located between one ends of the two guide brackets.

[0016] Preferably, a placement groove is opened on the side of the L-shaped placement rack away from the electric suction cup, a movable plate is arranged inside the placement groove, a fixing rack is fixedly connected to the L-shaped placement rack, a second hydraulic cylinder is fixedly installed on the fixing rack, and a piston shaft of the second hydraulic cylinder is fixedly connected to the movable plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By driving the rotating mechanism and the reciprocating mechanism, the sheet metal parts are continuously rotated inside the cylindrical heating furnace, and the limit contact position between the clamping roller and the sheet metal parts is continuously changed, which ensures the uniformity of heating of the sheet metal parts while reducing the heating requirements of the furnace space and the number of clamping rollers, thereby reducing the heating cost and equipment manufacturing cost during the heating process of the sheet metal parts.

[0019] 2. When the guide pin moves to the end of the spiral guide groove away from the axis of the guide plate, the output shaft of the first motor rotates in the opposite direction and drives the rotating plate to reverse, thereby moving the guide pin to the initial position and making the two sets of clamping rollers approach each other during the reverse rotation, so that the two sets of clamping rollers drive the sheet metal to perform limited rotation and continuously adjust the contact position with the sheet metal to ensure uniform heating of the sheet metal.

[0020] 3. When the output shaft of the second motor rotates in the opposite direction, the two arc plates in the same group approach each other and close the connecting opening after contact, so that the inlet and outlet of the cylindrical heating furnace are sealed, thereby reducing the pollution caused by the discharge of heating gas from the inlet and outlet, and the arc plate and the inner wall of the cylindrical heating furnace are fitted together to form a ring surface inside the cylindrical heating furnace, preventing one end of the sheet metal from tilting and sliding during rotation and falling into the inlet and outlet to cause jamming, thereby ensuring normal rotation and heating of the sheet metal.

[0021] 4. When the sheet metal part is being pushed, the other end of the sheet metal part moves through between the two limiting rollers in the same group, and the sheet metal part is limited by the two groups of limiting rollers to prevent the sheet metal part from tilting and falling during the process of entering the cylindrical heating furnace and being unable to enter between the two clamping rollers in the same group, thereby ensuring the stability of the sheet metal feeding. When the sheet metal part enters the cylindrical heating furnace and is limited by the two groups of clamping rollers, the output shaft of the fourth motor rotates in the opposite direction and drives the push plate to return to the initial position. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement at point A;

[0024] Figure 3 For the present invention Figure 1 A schematic diagram of the structure at B in FIG.

[0025] Figure 4 The structure of the present invention is schematically shown Figure 2 ;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the structure at position C in FIG.

[0027] Figure 6 The structure of the present invention is schematically shown Figure 3 ;

[0028] Figure 7 For the present invention Figure 6 A schematic diagram of the structure at D in FIG.

[0029] Figure 8 For the present invention Figure 6 A schematic diagram of the structure at position E in FIG.

[0030] Fig. 9 For the present invention Figure 6 A magnified schematic diagram of the structure at F in FIG.

[0031] Fig.10 It is a schematic diagram of the cross-sectional structure of the present invention;

[0032] Fig.11 For the present invention Fig.10 A schematic diagram of the structure at G in FIG.

[0033] Fig.12 It is a schematic diagram of the first matching structure of the rotating plate, the clamping roller and the guide plate of the present invention;

[0034] Fig.13 For the present invention Fig.12 A schematic diagram of the structure at H in FIG.

[0035] Fig.14 It is a schematic diagram of the second matching structure of the rotating plate, the clamping roller and the guide plate of the present invention;

[0036] Fig.15 It is a schematic diagram of the matching structure of the clamping roller, movable bar and fixed plate of the present invention.

[0037] In the figure: 1, cylindrical heating furnace; 2, feeding frame; 3, discharging frame; 4, rotating groove; 5, rotating plate; 6, clamping roller; 7, driving roller; 8, gas pipe; 9, ignition valve; 10, air inlet pipe; 11, exhaust pipe; 12, outer gear ring; 13, first motor; 14, first gear; 15, movable groove; 16, movable bar; 17, connecting shaft; 18, guide plate; 19, spiral guide groove; 20, fixed plate; 21, guide pin; 22, arc plate; 23, L-shaped bracket; 24, rack; 25, second motor; 26, second gear; 27, rotating shaft; 28, third gear; 29, Matching gear; 30, third motor; 31, rotating short roller; 32, rectangular groove; 33, strip frame; 34, sliding block; 35, pushing plate; 36, lead screw; 37, fourth motor; 38, limiting roller; 39, L-shaped placement frame; 40, fixing block; 41, arc rod; 42, electric suction cup; 43, round rod; 44, first hydraulic cylinder; 45, strip groove rail; 46, connecting plate; 47, light rod; 48, mounting block; 49, limiting buckle; 50, spring; 51, guide bracket; 52, extrusion bracket; 53, placement groove; 54, movable plate; 55, fixing frame; 56, second hydraulic cylinder. DETAILED DESCRIPTION

[0038] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0039] like Figures 1 to 15 The automated roller heating furnace shown in the figure comprises a cylindrical heating furnace 1, a feeding frame 2 and a discharging frame 3 are fixedly connected to each other on both sides of the cylindrical heating furnace 1, and a rotating groove 4 (such as Fig.11 As shown in the figure, a rotating plate 5 is rotatably connected inside the rotating groove 4, and two groups of clamping rollers 6 are arranged at one end of the rotating plate 5, each group of clamping rollers 6 has two, a driving rotation mechanism is connected to the rotating plate 5, and a reciprocating movement mechanism is connected to the clamping rollers 6;

[0040] The cylindrical heating furnace 1 is connected with a movable sealing mechanism, a plurality of driving rollers 7 are arranged inside the discharge frame 3, a rotating conveying mechanism is connected to the driving rollers 7, a pushing feeding mechanism is connected to the feeding frame 2, a plurality of gas pipes 8 are fixedly connected to the surface of the cylindrical heating furnace 1 along the circumferential direction, and a plurality of ignition valves 9 (such as Fig.10As shown in the figure, the ignition valves 9 are fixedly connected to the cylindrical heating furnace 1, and the top and bottom of the cylindrical heating furnace 1 are fixedly connected with an air inlet pipe 10 and an exhaust pipe 11 respectively; when working, when the sheet metal is heated by the roller heating kiln, the sheet metal is usually heated and moved in the furnace by the support and rotation of multiple rollers to complete the discharge, but in the moving heating process of the sheet metal, in order to ensure the sufficient heating of the sheet metal and prevent the rollers and the sheet metal from having a fixed contact, the heating furnace needs to have a sufficient length to ensure the moving space of the sheet metal, thereby ensuring the heating efficiency of the sheet metal, and at the same time, a sufficient number of rollers are required to support and drive the sheet metal. The extension of the internal space of the heating furnace requires an increase in heating points and an improvement in heating efficiency, thereby increasing the heating cost and equipment manufacturing cost during use;The technical solution can solve the above problems. The specific working method is as follows: the sheet metal part enters the interior of the cylindrical heating furnace 1 along the feeding frame 2 by pushing the feeding mechanism. When the sheet metal part enters the interior of the cylindrical heating furnace 1, one end of the sheet metal part moves through between two clamping rollers 6 of the same group, and the sheet metal part is limited by the two groups of clamping rollers 6, and the openings of the natural gas pipeline and the gas pipe 8 are fixedly connected, so that the natural gas is ignited inside the cylindrical heating furnace 1 through the corresponding ignition valve 9 and continuously heats the interior of the cylindrical heating furnace 1. At the same time, the air inlet pipe 10 continuously transports protective gas to the interior of the cylindrical heating furnace 1 and discharges it to the outside through the exhaust pipe 11. Thereby, the gas circulation inside the cylindrical heating furnace 1 is ensured, and the normal combustion of natural gas inside the cylindrical heating furnace 1 is ensured. Then, the rotating plate 5 is rotated along the inside of the rotating groove 4 by driving the rotating mechanism, thereby driving the two groups of clamping rollers 6 to rotate synchronously, and the sheet metal parts are limited by the two groups of clamping rollers 6, so that the sheet metal parts are rotated inside the cylindrical heating furnace 1 through the limiting effect. During the rotation of the clamping rollers 6, the two groups of clamping rollers 6 are continuously reciprocated by the reciprocating mechanism, and the sheet metal parts are driven to rotate by the clamping rollers 6 and the contact position of the clamping rollers 6 and the sheet metal parts is continuously changed, so as to ensure the uniformity of the heating of the surface of the sheet metal parts. When the sheet metal part is continuously rotated with the two sets of clamping rollers 6 and is in a vertical state, the side of the sheet metal part contacts the bottom end of the cylindrical heating furnace 1 under the action of gravity, and the sheet metal part continues to rotate from the contact state and returns to the horizontal state through the limiting and rotation of the clamping rollers 6. During the continuous rotation, the side of the sheet metal part will produce a certain amount of wear, but in the subsequent stamping process, a certain range of surplus corners will be left around the sheet metal part and will be cut, so that the contact wear generated during the preheating process of the sheet metal part will not affect the subsequent stamping process. After the heating of the sheet metal part is completed, the rotating plate 5 drives the clamping rollers 6 to return to the initial position, and continues to push the next one through the action of the feeding mechanism. The sheet metal is fed into the cylindrical heating furnace 1, and the heated sheet metal is squeezed and pushed to the connection point between the cylindrical heating furnace 1 and the discharge frame 3, and the multiple transmission rollers 7 are rotated unidirectionally by the action of the rotating conveying mechanism, so that the heated sheet metal is moved along the top of the multiple transmission rollers 7 toward the stamping equipment. By driving the rotating mechanism and the reciprocating mechanism, the sheet metal is continuously rotated inside the cylindrical heating furnace 1, and the limit contact position of the clamping roller 6 and the sheet metal is continuously changed, while ensuring the uniformity of the heating of the sheet metal, the requirements for heating in the furnace space and the number of clamping rollers 6 are reduced, thereby reducing the heating cost and equipment manufacturing cost during the heating process of the sheet metal. ;

[0041] As a further embodiment of the present invention, the driving rotation mechanism includes an outer gear ring 12, which is fixedly connected to the end of the rotating plate 5 away from the clamping roller 6. A first motor 13 is fixedly installed on the cylindrical heating furnace 1. The output shaft of the first motor 13 passes through the cylindrical heating furnace 1 and extends to the inside of the rotating groove 4, and is fixedly connected to a first gear 14. The first gear 14 is meshed with the outer gear ring 12. A movable groove 15 is provided on the rotating plate 5. Two movable bars 16 are slidably connected to the inside of the movable groove 15. Two connecting shafts 17 (such as Fig.15 As shown), the connecting shafts 17 are all rotatably connected to the corresponding clamping rollers 6; when working, the first gear 14 is driven to rotate by the output shaft of the first motor 13, and the first gear 14 and the outer gear ring 12 are meshed with each other, so that the outer gear ring 12 drives the rotating plate 5 to rotate inside the rotating groove 4, and through the sliding connection between the movable bar 16 and the movable groove 15 and the rotational connection of the connecting shaft 17 to the clamping roller 6, the rotating plate 5 drives the movable bar 16 to rotate, and the movable bar 16 drives the clamping roller 6 to rotate through the fixed connection with the connecting shaft 17.

[0042] As a further embodiment of the present invention, the reciprocating mechanism includes a guide plate 18, which is fixedly connected to the inside of the cylindrical heating furnace 1 and located at the other end of the clamping roller 6. Two spiral guide grooves 19 are provided on the guide plate 18 along the circumferential direction. Two fixed plates 20 are provided at one end of the guide plate 18. Guide pins 21 are fixedly connected to the fixed plate 20. The two guide pins 21 are respectively located at one end of the corresponding spiral guide groove 19 close to the axis. One end of the two connecting shafts 17 of the same group is fixedly connected to the corresponding fixed plate 20. When working, the two groups of clamping rollers 6 are driven to rotate synchronously by rotating the rotating plate 5, so that the two fixed plates 20 are rotated, and the guide pins 21 on the fixed plate 20 are rotated through the corresponding spiral guide grooves 19. The guide groove 19 performs spiral guidance, so that the fixed plate 20 moves away from the axis of the guide plate 18 along the spiral trajectory of the spiral guide groove 19, and drives the corresponding connecting shaft 17 to move synchronously, so that the two groups of clamping rollers 6 move away from each other during the rotation process, and at the same time, the movable bar 16 slides along the sliding connection inside the movable groove 15. When the guide pin 21 moves to the end of the spiral guide groove 19 away from the axis of the guide plate 18, the output shaft of the first motor 13 rotates in the opposite direction and drives the rotating plate 5 to reverse, so that the guide pin 21 moves to the initial position, and the two groups of clamping rollers 6 approach each other during the reverse rotation, so that the two groups of clamping rollers 6 drive the sheet metal to perform limited rotation and continuously adjust the contact position with the sheet metal, thereby ensuring the uniformity of heating of the sheet metal.

[0043] As a further implementation scheme of the present invention, the movable sealing mechanism includes two groups of arc plates 22, which are respectively located at the fixed connection points between the feed frame 2 and the discharge frame 3 and the cylindrical heating furnace 1. The number of arc plates 22 in each group is two, and the ends of the two arc plates 22 in the same group that are away from each other penetrate the cylindrical heating furnace 1 and extend to the outside of the cylindrical heating furnace 1 and are fixedly connected with an L-shaped bracket 23. The bottom of the feed frame 2 and the discharge frame 3 are provided with two racks 24, and the racks 24 are fixedly connected to the corresponding L-shaped brackets 23. Two second motors 25 are fixedly installed on the cylindrical heating furnace 1, and the output shafts of the second motors 25 are fixedly connected with second gears 26, which are meshed with the corresponding two racks 24. When working, the second gear 26 is driven to rotate by the rotation of the output shaft of the second motor 25. And through the meshing action between the second gear 26 and the corresponding two racks 24, the corresponding two racks 24 are moved away from each other, and through the fixed connection between the L-shaped bracket 23 and the arc plate 22, the two arc plates 22 in the same group are moved away from each other along the through-insertion, and the connecting openings between the feed frame 2 and the discharge frame 3 and the cylindrical heating furnace 1 are opened. When the output shaft of the second motor 25 rotates in the opposite direction, the two arc plates 22 in the same group approach each other and close the connecting openings after contact, so that the inlet and outlet of the cylindrical heating furnace 1 are sealed, thereby reducing the pollution caused by the heating gas discharged from the inlet and outlet, and the arc plate 22 and the inner wall of the cylindrical heating furnace 1 are fitted together to form a ring surface inside the cylindrical heating furnace 1, thereby preventing one end of the sheet metal from tilting and sliding during rotation and falling into the inlet and outlet to cause jamming, thereby ensuring normal rotation and heating of the sheet metal.

[0044] As a further embodiment of the present invention, the rotary conveying mechanism includes a plurality of rotating shafts 27, which are all rotatably connected to the inside of the discharge frame 3, and the transmission rollers 7 are respectively fixedly connected to the corresponding rotating shafts 27. One end of the rotating shaft 27 is fixedly connected to a third gear 28, and one side of the discharge frame 3 is rotatably connected to a plurality of matching gears 29, which are meshed with two adjacent third gears 28. A third motor 30 is fixedly installed on the other side of the discharge frame 3, and the output shaft of the third motor 30 is fixedly connected to one of the rotating shafts 27; when working, the corresponding rotating shaft 27 is driven to rotate by the rotation of the output shaft of the third motor 30, so that the third gear 28 on the rotating shaft 27 rotates, and through the meshing of the third gear 28 and the matching gear 29, the plurality of third gears 28 rotate in the same direction under the meshing action, and the rotating shaft 27 rotates synchronously along the rotating connection, so that the plurality of transmission rollers 7 rotate in the same direction, and when the heated sheet metal is located at the top of the transmission roller 7, the sheet metal is conveyed and discharged by the same rotation of the plurality of transmission rollers 7, and moved to the stamping equipment.

[0045] As a further embodiment of the present invention, the feeding mechanism includes a plurality of rotating short rollers 31, which are respectively rotatably connected to the two sides of the feed frame 2, a rectangular groove 32 is provided at the bottom of the feed frame 2, and a strip frame 33 is fixedly connected to both sides of the rectangular groove 32, a sliding block 34 is slidably connected to the inside of the strip frame 33, and a push plate 35 is fixedly connected to the top of the sliding block 34, a lead screw 36 is rotatably connected to the inside of the strip frame 33, and the sliding block 34 is threadedly connected to the lead screw 36, a fourth motor 37 is fixedly installed at one end of the strip frame 33, and the output shaft of the fourth motor 37 is fixedly connected to one end of the lead screw 36, and two sets of limiting rollers 38 (such as Figure 5 As shown in the figure, there are two limit rollers 38 in each group and they are arranged up and down; when working, when the sheet metal part is located inside the feed frame 2, the sheet metal part is supported by a plurality of rotating short rollers 31, and the output shafts of the two fourth motors 37 rotate synchronously and drive the corresponding lead screws 36 to rotate, and the threaded connection between the lead screws 36 and the sliding block 34 causes the sliding block 34 to slide along the inside of the strip frame 33, and drives the push plate 35 to move synchronously, and one end of the push plate 35 contacts one end of the sheet metal part, and pushes the sheet metal part toward the cylindrical shape during the movement. The sheet metal is pushed inside the heating furnace 1, and the other end of the sheet metal moves through between the two limiting rollers 38 of the same group during the pushing process, and the sheet metal is limited by the two groups of limiting rollers 38 to prevent the sheet metal from tilting and falling during the process of entering the cylindrical heating furnace 1 and being unable to enter between the two clamping rollers 6 of the same group, thereby ensuring the stability of the sheet metal feeding. When the sheet metal enters the cylindrical heating furnace 1 and is limited by the two groups of clamping rollers 6, the output shaft of the fourth motor 37 rotates in the opposite direction and drives the push plate 35 to return to the initial position.

[0046] As a further implementation scheme of the present invention, an L-shaped placement rack 39 is fixedly connected to the feed frame 2, the L-shaped placement rack 39 is tilted, a limiting mechanism is connected to the L-shaped placement rack 39, and a flip loading mechanism is connected to the feed frame 2; when working, multiple sheet metal parts are vertically placed by the L-shaped placement rack 39, and are tilted synchronously with the tilt direction of the L-shaped placement rack 39, and then the sheet metal parts at the outermost part of the L-shaped placement rack 39 are flipped and moved to the inside of the feed frame 2 by the action of the flip loading mechanism, and supported by multiple rotating short rollers 31, so that the sheet metal parts are automatically loaded and fed, and the mutual friction generated during the stacking and loading of the sheet metal parts is effectively reduced by the flipping movement, thereby ensuring the integrity of the surface of the sheet metal parts.

[0047] As a further embodiment of the present invention, the flip feeding mechanism includes a fixed block 40, which is fixedly connected between the two strip frames 33, and a curved rod 41 is slidably connected to the fixed block 40, and an end of the curved rod 41 located above the fixed block 40 is fixedly connected to an electric suction cup 42, and an end of the curved rod 41 located below the fixed block 40 is fixedly plugged with a round rod 43 (such as Figure 8 As shown in the figure, a first hydraulic cylinder 44 is fixedly installed on the feeding frame 2, and two strip groove rails 45 are fixedly connected to the piston shaft of the first hydraulic cylinder 44, and the two ends of the circular rod 43 are respectively located inside the corresponding strip groove rails 45; when working, the electric suction cup 42 contacts and adsorbs one side of the sheet metal part on the outermost side of the L-shaped placement rack 39, and the two strip groove rails 45 are driven to move synchronously through the movement of the piston shaft of the first hydraulic cylinder 44, and the two ends of the circular rod 43 are limited by the two strip groove rails 45, so that the circular rod 43 drives the arc rod 41 to move at the sliding connection of the fixed block 40, and the circular rod 43 moves in coordination inside the strip groove rails 45, so that the electric suction cup 42 drives the adsorbed sheet metal part to flip, and the sheet metal part is moved to the top of multiple rotating short rollers 31 for support and then released from adsorption, thereby completing the automatic loading of the sheet metal part.

[0048] As a further implementation scheme of the present invention, the limiting mechanism includes two connecting plates 46, the two connecting plates 46 are fixedly connected to the side of the L-shaped placement frame 39 away from the electric suction cup 42, two light rods 47 are fixedly connected between the two connecting plates 46, two mounting blocks 48 are slidably inserted on the two light rods 47, and the mounting blocks 48 are fixedly connected with limiting buckles 49, and two springs 50 are sleeved on the light rods 47, and the springs 50 are fixedly connected between the mounting blocks 48 and the adjacent connecting plates 46, and the bottoms of the two mounting blocks 48 are fixedly connected with guide brackets 51, and one end of the two guide brackets 51 is provided with a guiding inclined surface, and the bottom of the electric suction cup 42 is fixedly connected with an extrusion bracket 52, and one end of the extrusion bracket 52 is located between one end of the two guide brackets 51; when working, when the arc rod 41 drives the electric suction cup 42 upward, the electric suction cup 42 is fixedly connected to the bottom of the electric suction cup 42, and the electric suction cup 42 is fixedly connected to the bottom of the electric suction cup 42. When moving and approaching the L-shaped placement rack 39, one end of the extrusion bracket 52 moves between the two guide brackets 51, and by contacting and extruding the guiding inclined surface at one end of the extrusion bracket 52, the two guide brackets 51 are moved away from each other, and the two mounting blocks 48 are driven to move away from each other along the sliding insertion of the light rod 47 and squeeze the corresponding spring 50 to produce compression deformation, so that the two limit buckles 49 are moved away from each other and the limit on the sheet metal is released. When the electric suction cup 42 drives the corresponding sheet metal to flip downward, one end of the extrusion bracket 52 is disengaged from between the two guide brackets 51, and the spring 50 squeezes the mounting block 48 under the action of elastic extension, so that the two mounting blocks 48 drive the corresponding limit buckles 49 to approach each other, and limit the remaining sheet metal on the L-shaped placement rack 39 to prevent the sheet metal from falling from the L-shaped placement rack 39.

[0049] As a further implementation scheme of the present invention, a placement groove 53 is opened on the side of the L-shaped placement rack 39 away from the electric suction cup 42, and a movable plate 54 is arranged inside the placement groove 53. A fixed frame 55 is fixedly connected to the L-shaped placement rack 39, and a second hydraulic cylinder 56 is fixedly installed on the fixed frame 55. The piston shaft of the second hydraulic cylinder 56 is fixedly connected to the movable plate 54. During operation, when the electric suction cup 42 drives the corresponding sheet metal to flip downward, the two limiting buckles 49 re-limit the remaining sheet metal on the L-shaped placement rack 39, and then the movable plate 54 is driven to move by the piston shaft of the second hydraulic cylinder 56, so that the movable plate 54 pushes the remaining sheet metal to move, so that the electric suction cup 42 can continue to contact and adsorb the remaining sheet metal at a fixed position after flipping upward, thereby ensuring the stability of the electric suction cup 42 in adsorbing and loading materials.

[0050] Working principle of the present invention:

[0051] The sheet metal part enters the interior of the cylindrical heating furnace 1 along the feeding frame 2 by pushing the feeding mechanism. When the sheet metal part enters the interior of the cylindrical heating furnace 1, one end of the sheet metal part moves through between two clamping rollers 6 of the same group, and the sheet metal part is limited by the two groups of clamping rollers 6, and the openings of the natural gas pipeline and the gas pipe 8 are fixedly connected, so that the natural gas is ignited inside the cylindrical heating furnace 1 through the corresponding ignition valve 9 and continuously heats the interior of the cylindrical heating furnace 1. At the same time, the air inlet pipe 10 continuously transports protective gas to the interior of the cylindrical heating furnace 1, and discharges it to the outside through the exhaust pipe 11, thereby ensuring the gas circulation inside the cylindrical heating furnace 1 , ensuring the normal combustion of natural gas inside the cylindrical heating furnace 1, and then driving the rotating mechanism to make the rotating plate 5 rotate along the inside of the rotating groove 4, thereby driving the two sets of clamping rollers 6 to rotate synchronously, and through the two sets of clamping rollers 6 to limit the sheet metal, the sheet metal is rotated inside the cylindrical heating furnace 1 through the limiting effect. During the rotation of the clamping rollers 6, the two sets of clamping rollers 6 are continuously moved back and forth through the reciprocating mechanism, and the sheet metal is driven to rotate by the clamping rollers 6 and the contact position of the clamping rollers 6 and the sheet metal is continuously changed to ensure the uniformity of the heating of the sheet metal surface. When the sheet metal moves with the two sets of clamping rollers 6 When the sheet metal is continuously rotated and in a vertical state, the side of the sheet metal part contacts the bottom end of the cylindrical heating furnace 1 under the action of gravity, and the sheet metal part continues to rotate from the contact state and returns to the horizontal state through the limiting and rotation of the clamping roller 6. During the continuous rotation, the side of the sheet metal part will produce a certain amount of wear, but in the subsequent stamping process, a certain range of surplus corners will be left around the sheet metal part and cut, so that the contact wear generated during the preheating process of the sheet metal part will not affect the subsequent stamping process. After the heating of the sheet metal part is completed, the rotating plate 5 drives the clamping roller 6 to return to the initial position, and continues to push the feeding mechanism to feed the next sheet metal part into the circular In the cylindrical heating furnace 1, the heated sheet metal parts are squeezed and pushed to the connection point between the cylindrical heating furnace 1 and the discharge frame 3, and the multiple drive rollers 7 are rotated unidirectionally through the action of the rotating conveying mechanism, so that the heated sheet metal parts are moved toward the stamping equipment along the top of the multiple drive rollers 7. By driving the rotating mechanism and the reciprocating mechanism, the sheet metal parts are continuously rotated inside the cylindrical heating furnace 1, and the limiting contact position of the clamping roller 6 and the sheet metal parts is continuously changed, which ensures the uniformity of heating of the sheet metal parts and reduces the heating requirements of the furnace space and the number of clamping rollers 6, thereby reducing the heating cost and equipment manufacturing cost during the heating process of the sheet metal parts.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An automated roller heating furnace, comprising a cylindrical heating furnace (1), characterized in that: The two sides of the cylindrical heating furnace (1) are respectively fixedly connected with a feeding frame (2) and a discharging frame (3); a rotating groove (4) is provided at one end of the interior of the cylindrical heating furnace (1); a rotating plate (5) is rotatably connected inside the rotating groove (4); two groups of clamping rollers (6) are provided at one end of the rotating plate (5); each group of clamping rollers (6) has two clamping rollers; a driving rotation mechanism is connected to the rotating plate (5); and a reciprocating movement mechanism is connected to the clamping rollers (6); The cylindrical heating furnace (1) is connected to a movable sealing mechanism, a plurality of drive rollers (7) are arranged inside the discharge frame (3), a rotating conveying mechanism is connected to the drive rollers (7), a pushing feed mechanism is connected to the feed frame (2), a plurality of gas pipes (8) are fixedly connected to the surface of the cylindrical heating furnace (1) along the circumferential direction, a plurality of ignition valves (9) are fixedly connected to the gas pipes (8), the ignition valves (9) are all fixedly connected to the cylindrical heating furnace (1), and an air intake pipe (10) and an exhaust pipe (11) are fixedly connected to the top and bottom of the cylindrical heating furnace (1), respectively; The driving rotating mechanism comprises an outer gear ring (12), the outer gear ring (12) being fixedly connected to one end of the rotating plate (5) away from the clamping roller (6), a first motor (13) being fixedly mounted on the cylindrical heating furnace (1), an output shaft of the first motor (13) passing through the cylindrical heating furnace (1) and extending to the inside of the rotating groove (4) and then fixedly connected to a first gear (14), the first gear (14) and the outer gear ring (12) being meshed, a movable groove (15) being provided on the rotating plate (5), the inside of the movable groove (15) being slidably connected to two movable bars (16), the movable bars (16) being fixedly connected to two connecting shafts (17), the connecting shafts (17) being rotatably connected to the inside of the corresponding clamping roller (6); The reciprocating mechanism comprises a guide plate (18), the guide plate (18) being fixedly connected inside the cylindrical heating furnace (1) and being located at the other end of the clamping roller (6), the guide plate (18) being provided with two spiral guide grooves (19) along the circumferential direction, one end of the guide plate (18) being provided with two fixed plates (20), the fixed plate (20) being fixedly connected with guide pins (21), the two guide pins (21) being respectively located at one end of the corresponding spiral guide groove (19) close to the axis, and one end of the two connecting shafts (17) in the same group are both fixedly connected to the corresponding fixed plate (20); The movable sealing mechanism comprises two groups of arc plates (22), the two groups of arc plates (22) are respectively located at the fixed connection points between the feed frame (2) and the discharge frame (3) and the cylindrical heating furnace (1), the number of the arc plates (22) in each group is two, the ends of the two arc plates (22) in the same group that are away from each other both penetrate the cylindrical heating furnace (1) and extend to the outside of the cylindrical heating furnace (1) and are fixedly connected to an L-shaped bracket (23), the bottom of the feed frame (2) and the discharge frame (3) are each provided with two racks (24), the racks (24) are each fixedly connected to the corresponding L-shaped brackets (23), the cylindrical heating furnace (1) is fixedly mounted with two second motors (25), the output shafts of the second motors (25) are each fixedly connected to a second gear (26), the second gear (26) is each meshed with the corresponding two racks (24); The pushing feeding mechanism comprises a plurality of rotating short rollers (31), the plurality of rotating short rollers (31) are rotatably connected to two sides of the inside of the feeding frame (2), a rectangular groove (32) is provided at the bottom of the feeding frame (2), both sides of the rectangular groove (32) are fixedly connected to a strip frame (33), a sliding block (34) is slidably connected to the inside of the strip frame (33), a pushing plate (35) is fixedly connected to the top of the sliding block (34), a lead screw (36) is rotatably connected to the inside of the strip frame (33), the sliding block (34) is threadedly connected to the lead screw (36), a fourth motor (37) is fixedly mounted at one end of the strip frame (33), an output shaft of the fourth motor (37) is fixedly connected to one end of the lead screw (36), and two groups of limiting rollers (38) are rotatably connected to the inside of one end of the feeding frame (2) close to the cylindrical heating furnace (1), and the number of each group of limiting rollers (38) is two and they are arranged up and down; The feed frame (2) is fixedly connected to an L-shaped placement frame (39), the L-shaped placement frame (39) is tilted, a limiting mechanism is connected to the L-shaped placement frame (39), and a flip loading mechanism is connected to the feed frame (2); The flip feeding mechanism comprises a fixed block (40), the fixed block (40) is fixedly connected between the two strip frames (33), an arc rod (41) is slidably connected to the fixed block (40), one end of the arc rod (41) located above the fixed block (40) is fixedly connected to an electric suction cup (42), and one end of the arc rod (41) located below the fixed block (40) is fixedly plugged with a round rod (43), a first hydraulic cylinder (44) is fixedly installed on the feeding frame (2), two strip groove rails (45) are fixedly connected to the piston shaft of the first hydraulic cylinder (44), and two ends of the round rod (43) are respectively located inside the corresponding strip groove rails (45); The limiting mechanism comprises two connecting plates (46), the two connecting plates (46) being fixedly connected to a side of the L-shaped placement frame (39) away from the electric suction cup (42), two light rods (47) being fixedly connected between the two connecting plates (46), two mounting blocks (48) being slidably plugged on the two light rods (47), the mounting blocks (48) being fixedly connected to limiting buckles (49), two springs (50) being sleeved on the light rods (47), the springs (50) being fixedly connected between the mounting blocks (48) and the adjacent connecting plates (46), the bottoms of the two mounting blocks (48) being fixedly connected to guide brackets (51), one ends of the two guide brackets (51) being provided with guide inclined surfaces, the bottom of the electric suction cup (42) being fixedly connected to an extrusion bracket (52), one end of the extrusion bracket (52) being located between one ends of the two guide brackets (51).

2. The automated roller heating furnace according to claim 1, characterized in that: The rotary conveying mechanism comprises a plurality of rotating shafts (27), the plurality of rotating shafts (27) are all rotatably connected to the inside of the discharging frame (3), the driving rollers (7) are respectively fixedly connected to the corresponding rotating shafts (27), one end of each rotating shaft (27) is fixedly connected to a third gear (28), one side of the discharging frame (3) is rotatably connected to a plurality of matching gears (29), each matching gear (29) is meshed with two adjacent third gears (28), and a third motor (30) is fixedly installed on the other side of the discharging frame (3), and an output shaft of the third motor (30) is fixedly connected to one of the rotating shafts (27).

3. The automated roller heating furnace according to claim 1, characterized in that: A placement groove (53) is provided on a side of the L-shaped placement frame (39) away from the electric suction cup (42), a movable plate (54) is provided inside the placement groove (53), a fixing frame (55) is fixedly connected to the L-shaped placement frame (39), a second hydraulic cylinder (56) is fixedly mounted on the fixing frame (55), and a piston shaft of the second hydraulic cylinder (56) is fixedly connected to the movable plate (54).

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