Lead screw heat treatment air cooling equipment

Abstract

The invention discloses lead screw heat treatment air cooling equipment, and relates to the field of lead screw heat treatment machining, the lead screw heat treatment air cooling equipment comprises a supporting framework and an air cooling mechanism, a plurality of layers of lead screw bodies are arranged on the surface of the supporting framework, a rail is arranged between an air cooling assembly and a quenching furnace, and the supporting framework moves along the rail through rollers; according to the lead screw quenching device, the multiple rows of lead screws are arranged and supported by the supporting framework for quenching treatment, the quenched lead screws can be directly carried to the air cooling mechanism, each row of lead screws are inserted between plate shells, and therefore the lead screws can be directly moved to the air cooling mechanism from the quenching furnace. And a stable, upward and rapid air conduction space is formed between the aligned air exhaust grid opening and the air return grid opening and is used for implementing uniform air cooling on each layer of lead screw body, so that the heat treatment efficiency and quality are effectively improved.

Description

Technical Field

[0001] The invention relates to the field of heat treatment of lead screws, and in particular to air cooling equipment for heat treatment of lead screws. Background Art

[0002] Quenching is an important step in the heat treatment of the screw. After quenching, the screw will produce large internal stress, and due to the fast cooling speed of quenching, it may lead to incomplete structural transformation. Using air cooling for a short time pre-cooling can appropriately reduce the temperature of the screw and reduce the thermal stress in the subsequent tempering process. At the same time, slow cooling during the air cooling process also helps to stabilize the structure after quenching and provide a more favorable structural state for tempering.

[0003] Batch quenching of lead screws is done by using a support structure to arrange the lead screws neatly and send them into a quenching furnace. The lead screws that have completed quenching are still in a densely arranged state. It is difficult to ensure uniform cooling effect by using air cooling equipment to directly cool the densely arranged lead screws, especially the lead screws arranged in the inner area cool down much slower than the lead screws arranged at the edge. The temperature of the lead screws after quenching is high, which is not convenient for rapid distribution and air cooling. Therefore, implementing uniform air cooling for batch stacked lead screws after quenching can effectively improve the efficiency and quality of heat treatment. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the purpose of the present invention is to provide a screw heat treatment air cooling device to solve the problem that it is not convenient to quickly and evenly air cool the screws stacked in batches after quenching.

[0005] In order to solve the problems of the prior art, the technical solution of the present invention is as follows:

[0006] The screw heat treatment air cooling equipment comprises a support structure and an air cooling mechanism, wherein a plurality of layers of screw bodies are arranged on the surface of the support structure, a track is arranged between the air cooling assembly and the quenching furnace, and the support structure moves along the track through rollers, so that the support structure carrying the screw body can be directly moved from the quenching furnace to the air cooling mechanism;

[0007] The air cooling mechanism includes an air guide component, which connects several layers of plates and shells. When the supporting structure moves to the position of the air cooling mechanism, each layer of the lead screw body is located between the plates and shells. The interior of the middle plate and shell is divided into exhaust chambers and return air chambers distributed up and down by partitions. The interior of the lowest plate and shell is an independent exhaust chamber, and the interior of the highest plate and shell is an independent return air chamber. Exhaust grilles that pass through the exhaust chamber and return air grilles that pass through the return air chamber are provided on the surface of the plate and shell. The air cooling mechanism ventilates the exhaust chamber and sprays air upwards through the exhaust grilles. The air cooling mechanism draws air into the return chamber and inhales air downwards through the return air grilles. The air flow is conducted between the aligned exhaust grilles and the return air grilles to cool the lead screw body.

[0008] Preferably, a plurality of the exhaust grilles and return air grilles are arranged equidistantly, and the arrangement interval is the same as the distribution interval of the screw body. The exhaust grilles face the screw body upward, and the return air grilles face the gap of the screw body downward.

[0009] Preferably, the air guide assembly includes a bellows having an air inlet and an air outlet. The air inlet runs through each exhaust cavity, the air outlet runs through each return air cavity, the air inlet is equipped with an air inlet fan, and the air outlet is equipped with an exhaust fan.

[0010] Preferably, the supporting structure includes a bracket, and several layers of cross frames are symmetrically arranged on both sides of the bracket. Several grooves are arranged on the surface of the cross frames, and the two ends of the screw body are stuck in the grooves. The edges of the grooves are symmetrically provided with load wheels, and the ends of the screw body are rollingly supported by the load wheels.

[0011] Preferably, a rolling assembly is provided on the side of the plate shell, and a driving assembly is provided on the side of the air guide assembly, and the driving assembly is used to synchronously drive the rolling assembly to operate, so that the rolling assembly drives the screw body to rotate.

[0012] Preferably, the rolling assembly includes a plurality of swing arms, which are arranged and rotated on the sides of the plate shell, and all the swing arms rotate together with a connecting rod, and a pressure roller aligned with the screw body rotates at the bottom end of the swing arm, and a driven gear rotates at the bottom end of the swing arm close to the bellows position, and the driven gear and the pressure roller are coaxially provided with pulleys, and the driven gear and the pressure roller are connected through a belt synchronous transmission, and an end plate is fixed at the end of the connecting rod, and a spring is arranged between the end plate and the end of the plate shell, and when the screw body completely enters between the plate shell, the supporting structure contacts the end plate to drive the connecting rod to move, and the connecting rod pushes the swing arm to swing synchronously, so that the pressure roller is pressed down to contact the screw body.

[0013] Preferably, the driving assembly includes a plurality of driving gears, which are arranged and rotated on the side of the bellows. A transmission shaft rotates on the top of the bellows. Pulleys are fixed to the transmission shaft and the driving gears. The transmission shaft and the driving gears are connected by belt drive. The transmission shaft is connected to the motor through a worm gear drive. When the swing arm swings down, the driven gear engages and connects to the driving gear.

[0014] Preferably, the air inlet fan and the air exhaust fan are both connected to the motor via belt drive.

[0015] Preferably, a cover shell is provided on the outside of the plate shell, and the surface of the cover shell has openings aligned with the exhaust grille and the return air grille. When the cover shell is pressed by the end plate and the end plate is resisted by the supporting structure, the cover shell is pressed and moved to align the openings with the exhaust grille and the return air grille.

[0016] Preferably, a cylinder is provided at the bottom of the lowermost plate shell, and a hook handle is rotatably provided at the telescopic end of the cylinder, and the hook handle is used to hook and pull the supporting structure closer to the air cooling mechanism.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] 1. The present invention adopts a supporting structure to arrange and support multiple rows of lead screws for quenching treatment. The quenched lead screws can be directly carried to the air cooling mechanism, so that each row of lead screws is inserted between the plate shell, and a space for stable and rapid upward air conduction is formed between the aligned exhaust grille and return air grille, which is used to implement uniform air cooling and cooling of each layer of the lead screw body, effectively improving the efficiency and quality of heat treatment.

[0019] 2. The present invention is provided with a plurality of swinging pressure rollers. When air cooling is implemented, each pressure roller is driven to squeeze and contact the lead screw, and the lead screw is driven to rotate during the air cooling process, thereby further improving the uniformity of air cooling of the lead screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the separation structure of the support structure and the air cooling mechanism of the present invention;

[0021] Figure 2 This is one of the structural schematic diagrams of the support structure and the air cooling mechanism combined with the present invention;

[0022] Figure 3 This is the second schematic diagram of the combined structure of the support structure and the air cooling mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the supporting structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the air cooling mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the plate shell structure of the present invention;

[0026] Figure 7 This is one of the structural schematic diagrams of the air guide assembly of the present invention;

[0027] Figure 8 This is the second structural schematic diagram of the air guide assembly of the present invention;

[0028] Fig. 9 This is one of the structural schematic diagrams of the rolling assembly of the present invention;

[0029] Fig.10 This is the second structural schematic diagram of the rolling assembly of the present invention;

[0030] Fig.11 It is a schematic diagram of the structure of the lead screw body aligning the exhaust grille and the return air grille of the present invention.

[0031] Figure numerals: 1. bracket; 11. cross frame; 12. groove; 13. carrier wheel; 2. air guide assembly; 21. bellows; 22. air inlet fan; 23. exhaust fan; 24. motor; 25. transmission shaft; 26. driving gear; 3. plate shell; 31. exhaust chamber; 32. return air chamber; 33. exhaust grille; 34. return air grille; 4. rolling assembly; 41. swing arm; 42. connecting rod; 43. pressure roller; 44. driven gear; 45. end plate; 5. cylinder; 51. hook handle; 6. cover shell; 7. screw body. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] like Figure 1 , Figure 2 , Figure 3 As shown, the screw heat treatment air cooling equipment has two parts: a support structure and an air cooling mechanism. The air cooling mechanism is arranged opposite to the quenching furnace. A track is arranged between the air cooling mechanism and the quenching furnace. The support structure can move along the track through rollers. The support structure is used to carry the screw body 7 into the quenching furnace for quenching treatment. The support structure can carry the quenched screw body 7 and move it directly along the track to the fan mechanism for cooling treatment.

[0034] like Figure 4 As shown, the support structure includes a support 1, which is in the shape of a square frame. A plurality of layers of cross frames 11 are symmetrically arranged on both sides of the support 1. A plurality of grooves 12 are arranged on the surface of each cross frame 11. A plurality of lead screw bodies 7 can be arranged on the surface of each layer of the cross frame 11, and the two ends of the lead screw body 7 are inserted into the grooves 12 for positioning, so that the support structure can arrange and place a plurality of layers of lead screw bodies 7;

[0035] like Figure 5 , Figure 6 , Figure 8As shown, the air cooling mechanism comprises an air guide component 2 and a plate shell 3. The air guide component 2 comprises an air box 21, and an air inlet duct and an air outlet duct are distributed on the left and right sides of the air box 21. An air inlet fan 22 and an air exhaust fan 23 are installed on the surface of the air box 21. The air inlet fan 22 is used to transport air into the air inlet duct, and the exhaust fan 23 is used to discharge the air in the air outlet duct to the outside. A plurality of plate shells 3 are vertically arranged and fixed on the surface of the air box 21. The interior of the plate shell 3 located in the middle is divided into an exhaust chamber 31 and a return chamber 32 distributed up and down by a partition. The interior of the lowest plate shell 3 is an independent exhaust chamber 31, and the interior of the highest plate shell 3 is an independent return chamber 32. An exhaust grille 33 penetrating the exhaust chamber 31 is provided on the upper surface of the plate shell 3, and a return grille 34 penetrating the return chamber 32 is provided on the lower surface of the plate shell 3. All the exhaust chambers 31 are connected to the air inlet duct, and all the return chambers 32 are connected to the air outlet duct.

[0036] The supporting structure pushed out from the quenching furnace directly guides the air cooling mechanism, so that each layer of the lead screw body 7 is directly inserted between the plate shell 3, and the air inlet fan 22 and the exhaust fan 23 are turned on. The air inlet fan 22 introduces air into the air inlet duct, and the air is distributed to each exhaust cavity 31. The air is sprayed upward from the exhaust grille 33 to cool the lead screw body 7. The exhaust fan 23 draws air to generate negative pressure in the air outlet duct, thereby generating negative pressure in each return air cavity 32. The return air grille 34 sucks air downward to discharge the air with heat in time, and a space for stable and rapid upward air conduction is formed between the aligned exhaust grille 33 and return air grille 34, which is used to implement uniform air cooling for each layer of the lead screw body 7.

[0037] like Fig.11 As shown, a plurality of exhaust grilles 33 and return air grilles 34 are arranged at equal intervals, and the arrangement intervals are the same as the distribution intervals of the screw body 7. The exhaust grilles 33 face the screw body 7 upward, and the return air grilles 34 face the gap of the screw body 7 downward. The exhaust grilles 33 spray air upward toward the screw body 7, and the gas is blocked by the screw body 7 and diverted to both sides, while the return air grilles 34 can quickly discharge the diverted air to achieve rapid evacuation of heat.

[0038] During the air cooling process, the screw body 7 is rotated to keep the air cooling of each part of the screw body 7 uniform to the greatest extent. The specific operation is as follows:

[0039] A rolling assembly 4 is arranged on the side of the plate shell 3, a driving assembly is arranged on the side of the air guide assembly 2, and a carrying wheel 13 is symmetrically arranged on the edge of the groove 12, and the end of the screw body 7 is rollingly supported by the carrying wheel 13;

[0040] like Figure 5 , Fig. 9 , Fig.10As shown, the rolling assembly 4 includes a plurality of swing arms 41, which are arranged and rotated on the side of the plate shell 3, and all the swing arms 41 rotate together with a connecting rod 42, so that all the swing arms 41 can swing synchronously, and a pressure roller 43 aligned with the screw body 7 is rotatably installed at the bottom end of the swing arm 41, and a driven gear 44 is rotatably installed at the bottom end of a swing arm 41 near the position of the bellows 21, and the driven gear 44 and the pressure roller 43 are coaxially provided with pulleys, and all the pulleys are connected by belts, so that the driven gear 44 and the pressure roller 43 can rotate synchronously, and an end plate 45 is fixed at the end of the connecting rod 42, and a spring is arranged between the end plate 45 and the end of the plate shell 3;

[0041] like Figure 7 , Figure 8 As shown, the driving assembly includes a plurality of driving gears 26, which are arranged vertically and rotated on the side of the bellows 21. The top of the bellows 21 is rotatably mounted with a transmission shaft 25, and both the transmission shaft 25 and the driving gear 26 are fixed with pulleys, so that the transmission shaft 25 and the driving gear 26 are connected through belt transmission. The motor 24 is installed on the top of the bellows 21, and the output shaft of the motor 24 is fixed with a worm, and the surface of the transmission shaft 25 is fixed with a worm wheel, and the worm wheel is meshed with the worm.

[0042] like Figure 3 As shown, a cylinder 5 is provided at the bottom of the lowermost plate shell 3, and a hook handle 51 is rotatably provided at the telescopic end of the cylinder 5;

[0043] When the air-cooling is not in operation, the elastic force of the spring pushes the end plate 45 away from the cover shell 6, so that the connecting rod 42 drives all the swing arms 41 to swing upward, and all the pressure rollers 43 are kept in a high position, which is convenient for the subsequent screw body 7 to enter between the plate shell 3. At this time, the driven gear 44 is separated from the driving gear 26, and the transmission is in a disconnected state. When the air-cooling is in operation, the support structure completely sends the screw body 7 between the plate shell 3, and the rotating hook handle 51 is stuck in the rear part of the support structure, and then the cylinder 5 is retracted to make the hook handle 51 pull the support structure closer to the air-cooling mechanism, and the rod at the rear part of the support structure pushes the end plate 45 to drive the connecting rod 42 Move, so that all the swing arms 41 swing down, the pressure rollers 43 press down the ends of the screw body 7 one by one, and the driven gear 44 is meshed and connected with the driving gear 26. At this time, the end of the screw body 7 is supported by the three-point positioning rolling of the load wheel 13 and the pressure roller 43. When air cooling is implemented, the motor 24 is turned on, the transmission shaft 25 rotates through the worm gear transmission, all the driving gears 26 rotate through the belt transmission, and the driven gear 44 drives all the pressure rollers 43 to rotate through the meshing transmission, so that the screw body 7 rotates, so that each part of the screw body 7 can be more evenly contacted with the airflow.

[0044] The air inlet fan 22 and the exhaust fan 23 can be driven by independent driving sources, or they can be connected to the motor 24 by belts. This method can synchronize the air cooling and the screw rotation to ensure more uniform cooling of the screw body 7.

[0045] like Figure 5 , Fig. 9 As shown, a cover shell 6 is sleeved on the outside of the plate shell 3. The cover shell 6 is flat against the upper and lower surfaces of the plate shell 3. The surface of the cover shell 6 has openings that are aligned with the exhaust grille 33 and the return air grille 34. The cover shell 6 is compressed by the end plate 45 and the spring. When not working with air cooling, the openings on the surface of the cover shell 6 are misaligned with the exhaust grille 33 and the return air grille 34 to prevent external dust from entering the plate shell 3 and polluting the screw body 7 that is cooled later. When working with air cooling, the end plate 45 is resisted by the supporting structure, and the cover shell 6 is also pressed and moved to align the openings with the exhaust grille 33 and the return air grille 34 to ensure that the air flow can be smoothly conducted.

[0046] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Screw heat treatment air cooling equipment, characterized in that: It comprises a support structure and an air cooling mechanism, wherein a plurality of layers of lead screw bodies (7) are arranged on the surface of the support structure, and is characterized in that a track is arranged between the air cooling component and the quenching furnace, and the support structure moves along the track via rollers, so that the support structure carrying the lead screw body (7) can be directly moved from the quenching furnace to the air cooling mechanism; The air cooling mechanism comprises an air guide component (2), the air guide component (2) is connected to a plurality of plate shells (3), and when the support structure moves to the position of the air cooling mechanism, each layer of the lead screw body (7) is located between the plate shells (3), and the interior of the middle plate shell (3) is divided into an exhaust cavity (31) and a return cavity (32) distributed vertically by a partition, the interior of the lowest plate shell (3) is an independent exhaust cavity (31), and the interior of the highest plate shell (3) is an independent return cavity (3 2), an exhaust grille (33) penetrating the exhaust cavity (31) and a return grille (34) penetrating the return cavity (32) are provided on the surface of the plate shell (3); an air cooling mechanism ventilates the exhaust cavity (31) and sprays air upward through the exhaust grille (33); the air cooling mechanism draws air into the return cavity (32) and sucks air downward through the return grille (34); and air flow is conducted between the exhaust grille (33) and the return grille (34) in opposite positions to cool the screw body (7).

2. The screw heat treatment air cooling equipment according to claim 1, characterized in that: A plurality of the exhaust grille openings (33) and the return air grille openings (34) are arranged at equal intervals, and the arrangement interval is the same as the distribution interval of the lead screw body (7). The exhaust grille openings (33) face the lead screw body (7) upward, and the return air grille openings (34) face the gap of the lead screw body (7) downward.

3. The screw heat treatment air cooling equipment according to claim 1, characterized in that: The air guide assembly (2) comprises a wind box (21), wherein the wind box (21) has an air inlet duct and an air outlet duct, wherein the air inlet duct passes through each exhaust cavity (31), wherein the air outlet duct passes through each return cavity (32), wherein the air inlet duct is equipped with an air inlet fan (22), and wherein the air outlet duct is equipped with an exhaust fan (23).

4. The screw heat treatment air cooling equipment according to claim 1, characterized in that: The support structure comprises a bracket (1), a plurality of layers of cross frames (11) are symmetrically arranged on both sides of the bracket (1), a plurality of grooves (12) are arranged on the surface of the cross frames (11), the two ends of the screw body (7) are inserted into the grooves (12), the edges of the grooves (12) are symmetrically provided with load wheels (13), and the ends of the screw body (7) are rollingly supported by the load wheels (13).

5. The screw heat treatment air cooling equipment according to claim 3, characterized in that: A rolling assembly (4) is arranged on the side of the plate shell (3), and a driving assembly is arranged on the side of the air guide assembly (2). The driving assembly is used to synchronously drive the rolling assembly (4) to operate, so that the rolling assembly (4) drives the screw body (7) to rotate.

6. The screw heat treatment air cooling equipment according to claim 5, characterized in that: The rolling assembly (4) comprises a plurality of swing arms (41), the swing arms (41) being arranged and rotatable on the side of the plate shell (3), all the swing arms (41) being connected by a connecting rod (42) for rotating together, a pressure roller (43) being rotatable at the bottom end of the swing arm (41) and being aligned with the screw body (7), a driven gear (44) being rotatable at the bottom end of the swing arm (41) near the bellows (21), and a belt pulley being coaxially arranged on the driven gear (44) and the pressure roller (43), The moving gear (44) and the pressure roller (43) are connected by a belt synchronous transmission. An end plate (45) is fixed to the end of the connecting rod (42). A spring is arranged between the end plate (45) and the end of the plate shell (3). When the screw body (7) completely enters between the plate shell (3), the supporting structure contacts the end plate (45) to drive the connecting rod (42) to move. The connecting rod (42) pushes the swing arm (41) to swing synchronously, so that the pressure roller (43) is pressed down to contact the screw body (7).

7. The screw heat treatment air cooling equipment according to claim 6, characterized in that: The driving assembly comprises a plurality of driving gears (26), which are arranged and rotated on the side of the bellows (21). A transmission shaft (25) is rotated on the top of the bellows (21). Pulleys are fixed to the transmission shaft (25) and the driving gear (26). The transmission shaft (25) and the driving gear (26) are connected by belt transmission. The transmission shaft (25) is connected to the motor (24) by worm gear transmission. When the swing arm (41) swings down, the driven gear (44) is meshed and connected to the driving gear (26).

8. The screw heat treatment air cooling equipment according to claim 7, characterized in that: The air inlet fan (22) and the air exhaust fan (23) are both connected to the motor (24) via belt transmission.

9. The screw heat treatment air cooling equipment according to claim 6, characterized in that: The plate shell (3) is sleeved with a cover shell (6) on its exterior, and the surface of the cover shell (6) has a through opening aligned with the exhaust grille (33) and the return air grille (34). The cover shell (6) is pressed by the end plate (45), and when the end plate (45) is abutted by the supporting structure, the cover shell (6) is pressed and moved so that the through opening is aligned with the exhaust grille (33) and the return air grille (34).

10. The screw heat treatment air cooling equipment according to claim 1, characterized in that: A cylinder (5) is arranged at the bottom of the lowermost plate shell (3), and a hook handle (51) is rotatably arranged at the telescopic end of the cylinder (5), and the hook handle (51) is used to hook and pull the supporting structure closer to the air cooling mechanism.

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