Quenching device and method for precision spring machining

Abstract

The invention discloses a quenching device for precision spring machining and a method thereof, and relates to the technical field of quenching equipment, the quenching device comprises a cooling box, a first roller path is arranged in the cooling box, a second roller path is arranged in the cooling box, the cooling box is provided with a limiting part, and the limiting part is used for shielding multiple sets of springs on the first roller path and preventing the multiple sets of springs from being stacked and clamped; the cooling box is provided with a buffer piece for conveying the springs in the roller path I into the roller path II one by one, and the cooling box is provided with a stacking piece for stacking the quenched springs; a hydraulic rod drives a push plate to be in linkage with a soft push rod, so that a limiting plate slides up and down in a limiting inserting groove, multiple sets of springs are accurately blocked and forcibly separated into a single set in cooperation with width constraint of a bearing plate, the situation that the springs are stacked and clamped in a first roller path is effectively avoided, and the continuity of subsequent buffering and stacking links is ensured; the automation degree of the device and the spring conveying orderliness are improved, and a stable premise is provided for one-by-one machining of precision springs.

Description

Technical Field

[0001] The present invention relates to the technical field of quenching equipment, and specifically relates to a quenching device and method for precision spring processing. Background Art

[0002] Precision spring processing is a spring manufacturing process with extremely high precision requirements. Usually, it is necessary to perform quenching treatment on the spring. Quenching, as a heat treatment process of heating the metal workpiece to an appropriate temperature, holding for a certain time and then rapidly cooling, can transform the structure of the spring material into strengthening phases such as martensite, greatly improving the strength and hardness of the spring. In this way, the precision spring can withstand greater external forces without deformation, thus meeting the usage requirements in various high-precision equipment and instruments.

[0003] Chinese Patent with publication number CN220056964U discloses a quenching device for precision spring processing. Its structure includes a quenching component, and anti-stacking components are arranged on both sides of the quenching component, which solves the problem that when the existing quenching device processes springs, the springs are often placed in a frame and then the frame is placed in the quenching medium, which is likely to cause the springs to stack, reducing the contact area between the springs and the quenching medium, lowering the quenching effect, and increasing the defective rate of the produced springs. It realizes opening the threaded cover by thread rotation, putting the precision springs to be quenched into the barrel, then covering the threaded cover, starting the electric lifting rod to drive the sliding block, the sliding block drives the connecting cross bar, the connecting cross bar drives the sleeve, the sleeve drives the barrel to drop into the interior of the quenching pool, and then starting the rotary motor, the rotary motor drives the barrel to rotate, achieving an increase in the contact area between the precision springs and the quenching medium and improving the quenching effect of the precision springs.

[0004] However, the above-mentioned existing technology has the following deficiencies: During use, it is necessary to put the springs into the device one by one, and this operation method greatly restricts the production efficiency, not only prolonging the overall production time, but also making it difficult to quickly deliver in the face of a large number of orders. Summary of the Invention

[0005] The purpose of the present invention is to provide a quenching device and method for precision spring processing to solve the problem that during use, it is necessary to put the springs into the device one by one, and this operation method greatly restricts the production efficiency, not only prolonging the overall production time, but also making it difficult to quickly deliver in the face of a large number of orders.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a quenching device for precision spring processing, comprising: a cooling box, a first raceway is arranged in the cooling box, a second raceway is arranged in the cooling box, a limiting member is arranged on the cooling box to shield multiple groups of springs on the first raceway to prevent multiple groups of springs from piling up and jamming, a buffer member is arranged on the cooling box to transport the springs in the first raceway to the second raceway one by one, and a stacking member is arranged on the cooling box to stack the quenched springs;

[0007] The limiting member comprises a mounting plate fixed to the top of the cooling box, the mounting plate is fixedly connected with a hydraulic rod, one end of the hydraulic rod is fixedly connected with a push plate, the push plate is slidably plugged with the cooling box, the inner wall of the cooling box is fixedly connected with a guide tube, one end of the push plate is fixedly connected with a soft push rod, one end of the soft push rod passes through the guide tube and is slidably plugged with the guide tube, and one end of the soft push rod is fixedly connected with a connecting block, one end of the connecting block is fixedly connected with a connecting ear, one end of the connecting ear is fixedly connected with a limiting plate, and the limiting plate is slidably plugged with the first raceway and the second raceway respectively;

[0008] When the movable end of the hydraulic rod retracts and drives the push plate to move, the soft push rod pulls the limit plate to move upward until the limit plate is inserted into the first raceway, separating the multiple groups of springs in the first raceway, so that the multiple groups of springs fall into the second raceway one by one.

[0009] As a further solution of the present invention: a flush groove 1 is formed through the bottom of the inner part of the raceway 1, a flush groove 2 is formed through the bottom of the inner part of the raceway 2, and the flush groove 1 and the flush groove 2 are located in the same vertical direction, a movable groove 1 is formed in the inner side end of the raceway 2, a movable groove 2 is formed in the inner side end of the raceway 1, and the movable groove 1 and the movable groove 2 are located in the same vertical direction.

[0010] As a further solution of the present invention: a limiting slot is provided through the bottom end of the inner part of the raceway one, a movable slot three is provided at the inner side end of the raceway one, a movable slot four is provided at the inner side end of the raceway two, and the limiting slot, movable slot three and movable slot four are in the same plane, the limiting plate is slidably connected with the limiting slot, and the connecting ears are slidably connected with the movable slot three and movable slot four respectively.

[0011] As a further solution of the present invention: the buffer component includes a mounting frame fixedly connected to the inner wall of the cooling box, the connecting ear passes through the movable groove three or the movable groove four and the mounting frame, and is slidably connected to the mounting frame, a connecting groove is opened at the side end of the mounting frame, one end of the connecting block passes through the connecting groove and is fixedly connected to the connecting ear.

[0012] As a further solution of the present invention: A push column is slidably connected inside the installation frame, and one end of the push column penetrates through the installation frame and the first or second moving groove, and is fixedly connected with a receiving plate. A ball group is arranged between the connecting ear and the push column inside the installation frame, and the ball group abuts against the connecting ear and the push column respectively. One end of the spring I is fixedly connected to the bottom end of the receiving plate, and one end of the spring I penetrates through the first and second leveling grooves and is fixedly connected to the bottom end of the cooling box.

[0013] As a further solution of the present invention: The material coding member includes a connecting plate fixedly connected to the soft push rod. One end of the connecting plate is rotatably connected with a linkage rod. One end of the linkage rod is fixedly connected with a rotating shaft, and one end of the rotating shaft penetrates through the inner wall of the cooling box and is rotatably connected with the cooling box. The other end of the linkage rod is rotatably connected with a sleeve. One end of the sleeve is fixedly connected with a lifting plate. One end of the lifting plate is fixedly connected with an inserting plate, and the inserting plate is slidably inserted into the inner wall of the cooling box.

[0014] As a further solution of the present invention: One end of the cooling box is fixedly connected with a palletizing box. A feeding groove is formed through the inner wall of the palletizing box and penetrates through the cooling box. A communicating groove is formed through the inner wall of the palletizing box and penetrates through the cooling box. A receiving plate abuts against the inner wall of the palletizing box, and a spring II is fixedly connected to the bottom end of the receiving plate.

[0015] A quenching method for precision spring processing includes the following steps:

[0016] S1. First, the spring to be quenched rolls along the inclined plane of the first raceway to the receiving plate in the convex-shaped first leveling groove. When it is necessary to control the springs to fall into the second raceway one by one, the hydraulic rod drives the limiting plate to move upward and insert into the limiting slot. Using the width limitation of the receiving plate, the second group of springs is pushed out of the receiving range, leaving only a single group of springs.

[0017] S2. Then, when the limiting plate moves upward, it drives the push column through the ball group, pushing the receiving plate downward and compressing the bottom spring I for buffering, keeping the inclined angle to prevent falling. After the receiving plate enters the second raceway, it abuts against the inverted convex-shaped second leveling groove and rotates around the push column to be flush with the second raceway, and the spring rolls in smoothly.

[0018] S3. Finally, when the limiting plate moves upward, the connecting plate drives the lifting plate to move downward to receive the spring in the second raceway. After the limiting plate resets, the lifting plate moves upward, pushing the spring into the receiving plate of the palletizing box. The gravity of the spring causes the spring II to contract, and finally the top end of the spring is flush with the bottom end of the feeding groove, completing the equal-height stacking.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In the present invention, a hydraulic rod drives a push plate to link a flexible push rod, enabling a limit plate to slide up and down in a limit slot. With the width constraint of the receiving plate, it precisely blocks multiple groups of springs and forcibly separates them into single groups, effectively avoiding spring accumulation and jamming in the first raceway, ensuring the continuity of subsequent buffering and stacking processes, improving the automation level of the device and the orderliness of spring conveying, and providing a stable prerequisite for the individual processing of precision springs.

[0021] 2. In the present invention, a ball group in the mounting frame links a push post, converting the upward thrust of the limit plate into a downward movement of the receiving plate. With the elastic contraction of four groups of springs I at the bottom, a buffer structure is formed. When the receiving plate rotates between the first raceway and the second raceway, it changes the inclination angle, enabling the springs to roll in smoothly and offsetting the impact force during dropping, effectively protecting the springs from deformation damage. At the same time, through the guidance of symmetric push posts and moving grooves, the stable conveying of single-group springs is ensured, improving the processing accuracy.

[0022] 3. In the present invention, a flexible push rod of a connecting plate and a limiting member are linked to drive a linkage rod to drive a lifting plate to move up and down. With the elastic adjustment of the springs II at the bottom of the material receiving plate, the equal-height stacking of quenched springs is achieved. The height matching between the lifting plate and the feeding groove makes the tops of each layer of springs level, facilitating material taking. The elastic buffer structure reduces the impact during falling, protects the spring accuracy, requires no additional power, and improves the efficiency through mechanical linkage, meeting the high requirements of precision springs for stacking accuracy and automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall structural schematic diagram of a quenching device and method for processing precision springs according to the present invention;

[0024] Figure 2 is the overall structural sectional view of a quenching device and method for processing precision springs according to the present invention;

[0025] Figure 3 is the structural schematic diagram of the cooling box in a quenching device and method for processing precision springs according to the present invention;

[0026] Figure 4 is the structural schematic diagram of the limiting member in a quenching device and method for processing precision springs according to the present invention;

[0027] Figure 5 is the structural schematic diagram of the buffer member in a quenching device and method for processing precision springs according to the present invention;

[0028] Figure 6 is in a quenching device and method for processing precision springs according to the present invention Figure 5 structural schematic diagram of the part at A;

[0029] Figure 7It is a schematic structural diagram of a receiving plate in a quenching device and method for processing precision springs according to the present invention;

[0030] Figure 8 It is a schematic structural diagram of a material coding member in a quenching device and method for processing precision springs according to the present invention;

[0031] Figure 9 It is in a quenching device and method for processing precision springs according to the present invention Figure 8 Schematic structural diagram of the B position;

[0032] Figure 10 It is a schematic structural diagram of a palletizing box in a quenching device and method for processing precision springs according to the present invention.

[0033] In the figure: 1. Cooling box; 11. First raceway; 12. Second raceway; 13. First flush groove; 14. Second flush groove; 15. First moving groove; 16. Second moving groove; 17. Limit slot; 18. Third moving groove; 19. Fourth moving groove; 2. Limiting member; 21. Mounting plate; 22. Hydraulic rod; 23. Pushing plate; 24. Guide tube; 25. Soft push rod; 26. Connecting block; 27. Connecting ear; 28. Limiting plate; 3. Buffer member; 31. Mounting frame; 32. Connecting groove; 33. Pushing column; 34. Ball group; 35. Receiving plate; 36. First spring; 4. Material coding member; 41. Connecting plate; 42. Linking rod; 43. Rotating shaft; 44. Sleeve; 45. Lifting plate; 46. Inserting plate; 47. Palletizing box; 48. Feeding groove; 49. Connecting groove; 410. Material receiving plate; 411. Second spring. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0036] Reference Figures 1 to 3 In an embodiment of the present invention, a quenching device for precision spring processing includes: a cooling box 1, a raceway 11 is arranged in the cooling box 1, a raceway 2 12 is arranged in the cooling box 1, the raceway 11 and the raceway 2 12 are distributed in a V shape, the cooling box 1 is provided with a limiter 2 for shielding multiple groups of springs on the raceway 11, so that the multiple groups of springs fall from the raceway 11 into the raceway 2 12 one by one to prevent the multiple groups of springs from accumulating and getting stuck, the cooling box 1 is provided with a buffer 3 for transporting the springs in the raceway 11 to the raceway 2 12 one by one to prevent the springs from being deformed and damaged due to the impact force of falling, the cooling box 1 is provided with a stacking member 4 for stacking the quenched springs and making the top layer of springs at the same height for easy material retrieval, the bottom end of the raceway 11 is provided with a flush groove 13, and the bottom end of the raceway 2 12 is provided with a flush groove 2 14, and the flush groove 13 and the flush groove 2 14 are located in the same vertical direction, the flush groove 13 is a convex shape, and the flush groove 2 14 is an inverted convex shape. A movable groove 15 is provided at the inner side end of the second raceway 12, and a movable groove 2 16 is provided at the inner side end of the first raceway 11, and the movable groove 15 and the movable groove 2 16 are in the same vertical direction. There are two groups of movable grooves 15 and 16, which are symmetrically distributed on both sides of the first raceway 11 and the second raceway 12. A limited slot 17 is provided at the bottom end of the first raceway 11, a movable slot 3 18 is provided at the inner side end of the first raceway 11, and a movable slot 4 19 is provided at the inner side end of the second raceway 12, and the limited slot 17, the movable slot 3 18 and the movable slot 4 19 are in the same plane, and there are two groups of movable slots 3 18 and movable slot 4 19, which are symmetrically distributed on both sides of the first raceway 11 and the second raceway 12.

[0037] Reference Figures 4 to 6 , the limiting member 2 includes a mounting plate 21 fixed to the top end of the cooling box 1. A hydraulic rod 22 is fixedly connected to the mounting plate 21. One end of the hydraulic rod 22 is fixedly connected to a push plate 23. The push plate 23 is U-shaped, and two groups of rectangular plates are symmetrically and fixedly connected to the inner side of the U-shaped push plate 23. The two groups of rectangular plates are symmetrically distributed on both sides of the cooling box 1 and are slidably connected to the cooling box 1. A guide tube 24 is fixedly connected to the inner wall of the cooling box 1. The guide tube 24 is L-shaped, and there are two groups of guide tubes 24, which are symmetrically distributed on both sides inside the cooling box 1. One end of the push plate 23 is fixedly connected to a soft push rod 25. There are two groups of soft push rods 25, which are symmetrically distributed at one end of the push plate 23. The soft push rod 25 is made of a flexible material. One end of each group of soft push rods 25 penetrates through a group of guide tubes 24 and is slidably inserted into the guide tube 24. One end of the soft push rod 25 is fixedly connected to a connecting block 26. One end of the connecting block 26 is fixedly connected to a connecting ear 27. One end of the connecting ear 27 is fixedly connected to a limiting plate 28. The limiting plate 28 is slidably inserted into the limiting slot 17. The connecting ear 27 is respectively slidably inserted into the moving slot three 18 and the moving slot four 19. When the spring rolls along the inclined surface of the raceway one 11 to the receiving plate 35 in the flush slot one 13, the hydraulic rod 22 drives the push plate 23 to move upward, and the limiting plate 28 is inserted into the limiting slot 17 accordingly. The top end of the limiting plate 28 abuts against the second group of springs on the receiving plate 35. Since the width of the receiving plate 35 is designed to be greater than the diameter of a single group of springs and less than 1.5 times the diameter of the springs, the blocking of the limiting plate 28 forces the second group of springs to move out of the receiving plate 35, leaving only one group of springs. During this process, the connecting ear 27 slides in the moving slot three 18 of the raceway one 11 and the moving slot four 19 of the raceway two 12, ensuring the stability and guiding property of the movement of the limiting plate 28.

[0038] Adopting the above scheme: Through the cooperation of the limiting plate 28 and the receiving plate 35, multiple groups of springs are forcibly separated into single groups, completely solving the problem of material jamming caused by spring stacking in the traditional raceway, ensuring the continuity of the subsequent buffering and material stacking links. By using the size constraint of the receiving plate 35 and the dynamic blocking of the limiting plate 28, the springs are transferred orderly from the raceway one 11 to the raceway two 12, providing a prerequisite for the stable conveying of the buffer member 3, and avoiding the risk of impact or deformation caused by the simultaneous falling of multiple springs.

[0039] Reference Figures 5 to 7, the buffer member 3 includes a mounting frame 31 fixedly connected to the inner wall of the cooling box 1. There are two sets of mounting frames 31, symmetrically distributed on both sides inside the cooling box 1. The mounting frame 31 is an O-shaped hollow tube. Each set of connecting ears 27 passes through a set of the third moving grooves 18 or a set of the fourth moving grooves 19 and a set of mounting frames 31, and is slidably connected to the mounting frame 31. A set of connecting grooves 32 are formed at the side ends of each set of mounting frames 31. One end of each set of connecting blocks 26 passes through a set of connecting grooves 32 and is fixedly connected to a set of connecting ears 27. A set of push columns 33 are slidably connected inside each set of mounting frames 31. One end of the push column 33 passes through the mounting frame 31 and the first moving groove 15 or the second moving groove 16, and is fixedly connected to a receiving plate 35. The cross-section of the receiving plate 35 is in the shape of a Chinese character 'zhong'. The width of the receiving plate 35 is greater than the diameter of a set of quenching springs and less than 1.5 times the diameter of the quenching springs. The two sets of push columns 33 are symmetrically distributed on both sides of the receiving plate 35, and the push columns 33 are rotatably connected to the first moving groove 15 or the second moving groove 16. A ball group 34 is arranged between the connecting ears 27 and the push columns 33 inside the mounting frame 31, and the ball group 34 abuts against the connecting ears 27 and the push columns 33 respectively. The ball group 34 is composed of multiple groups of balls. Each group of balls abuts against each other, and both sides of the connecting ears 27 and the push columns 33 abut against a group of balls. A first spring 36 is fixedly connected to the bottom end of the receiving plate 35. One end of the first spring 36 passes through the first leveling groove 13 and the second leveling groove 14, and is fixedly connected to the bottom end of the cooling box 1. There are four sets of first springs 36, symmetrically distributed at the bottom end of the receiving plate 35. When the limiting plate 28 moves upward to retain a set of quenching springs on the receiving plate 35, under the abutting and linkage action of the ball group 34, the push column 33 is pushed downward, and the first spring 36 is forced to contract. At this time, the receiving plate 35 maintains the inclination angle when it is in the first raceway 11, preventing the quenching springs from falling. Until the receiving plate 35 moves into the second raceway 12 and abuts against the second leveling groove 14, at this time, the receiving plate 35 rotates around the push column 33 until the receiving plate 35 is flush with the inner bottom end of the second raceway 12, and the inclination angle changes, so that the quenching springs on the receiving plate 35 roll into the second raceway 12. When the limiting plate 28 of the limiting member 2 moves upward, the connecting ear 27 abuts against the push column 33 through the ball group 34, and the upward thrust of the limiting plate 28 is transmitted to the push column 33 by using the rolling friction of the balls, so that the push column 33 moves downward, driving the receiving plate 35 to descend synchronously. The four sets of first springs 36 at the bottom end of the receiving plate 35 are forced to contract, forming an elastic buffer. At this time, the receiving plate 35 maintains the inclination angle in the first raceway 11, holding a single set of springs to prevent them from falling. When the receiving plate 35 moves into the second raceway 12 and abuts against the inverted convex-shaped second leveling groove 14, the receiving plate 35 rotates around the push column 33, and the inclination angle gradually becomes flush with the bottom end of the second raceway 12, so that the springs roll into the second raceway 12 along a gentle slope. The impact force of the spring falling is offset through the elastic buffer of the first spring 36 and the rolling linkage of the ball group 34 throughout the process.

[0040] Adopting the above solution: The elastic contraction of spring 36 absorbs the kinetic energy of the spring during its fall. In combination with the gradually changing angle design of the receiving plate 35, it avoids the deformation of the spring caused by the free fall impact on the second raceway 12, which is especially suitable for the processing of precision springs with high precision requirements. The rolling contact linkage of the ball group 34 ensures the stable movement of the push column 33, enabling the receiving plate 35 to form a smooth transition channel between the first raceway 11 and the second raceway 12. In combination with the dimensional constraint of the width of the receiving plate 35, it ensures the orderly conveyance of a single group of springs and eliminates the conveyance jamming caused by the stacking of multiple springs.

[0041] Referring to Figures 8 to 10 , the stacking member 4 includes a connecting plate 41 fixedly connected to the soft push rod 25. There are two groups of connecting plates 41, symmetrically distributed on one side of the two groups of soft push rods 25. One end of each group of connecting plates 41 is rotatably connected to a group of linkage rods 42. The linkage rods 42 are U-shaped. One end of each group of linkage rods 42 is fixedly connected to a group of rotating shafts 43, and one end of the rotating shaft 43 penetrates the inner wall of the cooling box 1 and is rotatably connected to the cooling box 1. The other end of each group of linkage rods 42 is rotatably connected to a group of sleeves 44, and one end of the two groups of sleeves 44 is fixedly connected to a lifting plate 45. The cross-section of the lifting plate 45 is U-shaped. One end of the lifting plate 45 is fixedly connected to a plug board 46. There are two groups of plug boards 46, symmetrically distributed at one end of the lifting plate 45. The plug boards 46 are slidably inserted into the inner wall of the cooling box 1. One end of the cooling box 1 is fixedly connected to a stacking box 47. A feeding groove 48 is formed through the inner wall of the stacking box 47, and the feeding groove 48 penetrates the cooling box 1. A communication groove 49 is formed through the inner wall of the stacking box 47, and the communication groove 49 penetrates the cooling box 1. A receiving plate 410 is abutted against the inner wall of the stacking box 47. A second spring 411 is fixedly connected to the bottom end of the receiving plate 410. There are two groups of second springs 411, symmetrically distributed at the bottom end of the receiving plate 410. In the initial state, supported by the second spring 411, the top end of the receiving plate 410 is flush with the inner bottom end of the feeding groove 48. When the hydraulic rod 22 drives the limiting plate 28 to move upward, the connecting plate 41 moves upward synchronously, driving the U-shaped linkage rod 42 to rotate around the rotating shaft 43. Through the sleeve 44, the lifting plate 45 moves downward. The plug boards 46 on both sides of the lifting plate 45 are slidably guided by the inner wall of the cooling box 1 to ensure that its inner bottom surface is flush with the bottom surface of the second raceway 12, receiving a single group of springs rolling in from the second raceway 12. When the limiting plate 28 moves downward and resets, the linkage rod 42 rotates in the reverse direction, and the lifting plate 45 moves upward until its bottom end is flush with the bottom end of the feeding groove 48 of the stacking box 47. The spring rolls into the receiving plate 410 smoothly. The receiving plate 410 is flush with the feeding groove 48 under the initial support of the second spring 411. As the spring falls, its gravity causes the second spring 411 to contract, driving the receiving plate 410 to move downward, and finally keeping the top end of the spring flush with the bottom end of the feeding groove 48, realizing the equal-height stacking of multiple layers of springs.

[0042] The above scheme is adopted: through the elastic adjustment of the second spring 411, the top of each layer of springs is made flush with the bottom of the feed trough 48, avoiding the confusion of material retrieval caused by the different stacking heights of springs in traditional stacking, significantly improving the efficiency and accuracy of subsequent processes, and sharing the power source with the soft push rod 25 of the limit member 2. Through the mechanical transmission of the linkage rod 42 and the sleeve 44, the automatic lifting and lowering of the lifting plate 45 is realized without the need for an additional driving device, reducing energy consumption and structural complexity. The second spring 411 under the receiving plate 410 provides a buffer when the spring falls in, reducing the impact of the impact on the spring accuracy. At the same time, through the sliding guide of the insert plate 46, the lifting plate 45 is ensured to move smoothly to avoid spring dislocation or damage caused by shaking. It is especially suitable for precision spring processing scenarios with extremely high requirements on surface accuracy and geometric dimensions.

[0043] The working principle of the present invention is as follows: First, the spring to be quenched rolls along the inclined plane at the inner bottom end of the first raceway 11 in the cooling box 1. The spring rolls to the receiving plate 35 in the convex-shaped flush groove 13 opened through the inner bottom end of the first raceway 11. When it is necessary to control the springs to fall into the second raceway 12 one by one, the hydraulic rod 22 moves in the reverse direction to drive the push plate 23 to move. Through the soft push rod 25, the connecting block 26, and the connecting ear 27, the limiting plate 28 is driven to move upward. The limiting plate 28 is inserted into the limiting slot 17, and its top abuts against the second group of quenched springs on the receiving plate 35. Since the width of the receiving plate 35 is greater than the diameter of one group of quenched springs and less than 1.5 times the diameter of the quenched springs, the blocking effect of the limiting slot 17 will push the second group of quenched springs out of the bearing range of the receiving plate 35, so that only one group of quenched springs remains on the receiving plate 35, realizing the function of the limiting member 2 to limit the springs one by one, avoiding the accumulation and jamming of multiple groups of springs. During the upward movement of the limiting plate 28, in the mounting frame 31, between the connecting ear 27 and the push column 33, through the rolling contact linkage of the balls, the upward thrust of the limiting plate 28 is transmitted to the push column 33, pushing the push column 33 to move downward. As a result, the four groups of first springs 36 symmetrically distributed at the bottom end of the receiving plate 35 are stressed and contracted. At this time, the receiving plate 35 maintains the inclined angle in the first raceway 11 to prevent the quenched springs from falling due to gravity. As the receiving plate 35 moves downward into the second raceway 12 and abuts against the inverted convex-shaped flush groove 14 opened through the inner bottom end of the second raceway 12, under the abutting action, the receiving plate 35 rotates around the push column 33 until it is flush with the inner bottom end of the second raceway 12, and the inclined angle changes, so that the quenched springs on the receiving plate 35 smoothly roll into the second raceway 12. Through the linkage of the first springs 36 and the ball group 34 of the buffer member 3, it is avoided that the springs are deformed and damaged due to the impact force of falling. Moreover, when the hydraulic rod 22 drives the limiting plate 28 to move upward, the two connecting plates 41 fixedly connected to the soft push rod 25 move upward synchronously, driving the U-shaped linkage rod 42 rotatably connected to one end of each connecting plate 41 to rotate around the rotating shaft 43 penetrating the inner wall of the cooling box 1. Thus, the lifting plate 45 is driven to move downward through the sleeve 44 until the inner bottom surface of the lifting plate 45 is flush with the inner bottom surface of the second raceway 12, so that the quenched springs rolling into the second raceway 12 smoothly roll into the lifting plate 45. When the limiting plate 28 moves downward and resets, the lifting plate 45 rotates upward with the linkage rod 42 until the bottom end of the lifting plate 45 is flush with the inner bottom end of the feeding groove 48 opened through the inner wall of the stacking box 47 fixed to one end of the cooling box 1. The quenched springs roll from the lifting plate 45 onto the receiving plate 410 abutting against the inner wall of the stacking box 47. Due to the gravity of the quenched springs, the two groups of second springs 411 symmetrically distributed at the bottom end of the receiving plate 410 are stressed and contracted, driving the lifting plate 45 to move downward. Finally, the top ends of the quenched springs are flush with the inner bottom end of the feeding groove 48, realizing the neat stacking of the springs completed by quenching by the stacking member 4, ensuring that the springs on the top layer are at the same height, which is convenient for subsequent material taking operations;The hydraulic rod 22 drives the push plate 23 to link the flexible push rod 25, causing the limit plate 28 to slide up and down within the limit slot 17. With the width constraint of the bearing plate 35, it precisely blocks multiple groups of springs and forces them to separate into single groups, effectively avoiding spring accumulation and jamming in the first raceway 11, ensuring the continuity of subsequent buffering and material stacking processes, improving the automation level of the device and the orderliness of spring conveying, providing a stable premise for the individual processing of precision springs. Through the ball group 34 in the mounting frame 31 to link the push column 33, the upward thrust of the limit plate 28 is converted into the downward movement of the bearing plate 35. With the elastic contraction of the four groups of springs 36 at the bottom, a buffering structure is formed. When the bearing plate 35 rotates between the first raceway 11 and the second raceway 12, it changes the inclination angle, enabling the springs to roll in smoothly and offsetting the falling impact force, effectively protecting the springs from deformation damage. At the same time, through the symmetric push column 33 and the movement groove guidance, the stable conveying of single-group springs is ensured, improving the processing accuracy. Through the linkage between the connecting plate 41 and the flexible push rod 25 of the limiting member 2, the linkage rod 42 is driven to drive the lifting plate 45 to lift and lower. With the elastic adjustment of the springs 411 at the bottom of the receiving plate 410, the equal-height stacking of quenched springs is achieved. The height matching between the lifting plate 45 and the feeding chute 48 makes the tops of the springs on each layer flush, facilitating material taking. The elastic buffering structure reduces the impact during falling, protects the spring accuracy, requires no additional power, and improves the efficiency through mechanical linkage, meeting the high requirements of precision springs for stacking accuracy and automation.;

[0044] The above-mentioned is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A quenching device for precision spring processing, comprising: A cooling box (1), characterized in that a first roller track (11) is arranged in the cooling box (1), a second roller track (12) is arranged in the cooling box (1), a limiting member (2) is arranged on the cooling box (1) for shielding multiple groups of springs on the first roller track (11) to prevent multiple groups of springs from piling up and jamming, a buffer member (3) is arranged on the cooling box (1) for transporting the springs in the first roller track (11) to the second roller track (12) one by one, and a stacking member (4) is arranged on the cooling box (1) for stacking the springs that have been quenched; The limiting member (2) comprises a mounting plate (21) fixed to the top of the cooling box (1), a hydraulic rod (22) being fixedly connected to the mounting plate (21), one end of the hydraulic rod (22) being fixedly connected to a push plate (23), the push plate (23) being slidably plugged into the cooling box (1), the inner wall of the cooling box (1) being fixedly connected to a guide tube (24), one end of the push plate (23) being fixedly connected to a soft push rod (25), one end of the soft push rod (25) passing through the guide tube (24) and being slidably plugged into the guide tube (24), and one end of the soft push rod (25) being fixedly connected to a connecting block (26), one end of the connecting block (26) being fixedly connected to a connecting ear (27), one end of the connecting ear (27) being fixedly connected to a limiting plate (28), the limiting plate (28) being slidably plugged into the first raceway (11) and the second raceway (12) respectively; When the movable end of the hydraulic rod (22) retracts and drives the push plate (23) to move, the soft push rod (25) pulls the limit plate (28) to move upward until the limit plate (28) is inserted into the raceway 1 (11), separating the multiple groups of springs in the raceway 1 (11), so that the multiple groups of springs fall into the raceway 2 (12) one by one.

2. The quenching device for precision spring processing according to claim 1, wherein, The bottom end of the inner part of the raceway 1 (11) is provided with a flush groove 1 (13), the bottom end of the inner part of the raceway 2 (12) is provided with a flush groove 2 (14), and the flush groove 1 (13) and the flush groove 2 (14) are located in the same vertical direction, the inner side end of the raceway 2 (12) is provided with a movable groove 1 (15), the inner side end of the raceway 1 (11) is provided with a movable groove 2 (16), and the movable groove 1 (15) and the movable groove 2 (16) are located in the same vertical direction.

3. The quenching device for precision spring processing according to claim 2, characterized in that, A limiting slot (17) is provided at the bottom of the inner part of the raceway 1 (11), a movable slot 3 (18) is provided at the inner side end of the raceway 1 (11), and a movable slot 4 (19) is provided at the inner side end of the raceway 2 (12), and the limiting slot (17), the movable slot 3 (18) and the movable slot 4 (19) are in the same plane, the limiting plate (28) is slidably connected with the limiting slot (17), and the connecting ear (27) is slidably connected with the movable slot 3 (18) and the movable slot 4 (19) respectively.

4. A quenching device for precision spring processing according to claim 3, characterized in that, The buffer member (3) includes a mounting frame (31) fixedly connected to the inner wall of the cooling box (1). The connecting ear (27) passes through the third moving slot (18) or the fourth moving slot (19) and the mounting frame (31), and is slidably connected to the mounting frame (31). A connecting slot (32) is formed at the side end of the mounting frame (31). One end of the connecting block (26) passes through the connecting slot (32) and is fixedly connected to the connecting ear (27).

5. The quenching device for precision spring processing according to claim 4, characterized in that, A push column (33) is slidably connected inside the mounting frame (31). One end of the push column (33) passes through the mounting frame (31) and the first moving slot (15) or the second moving slot (16), and is fixedly connected to a receiving plate (35). A ball group (34) is arranged between the connecting ear (27) and the push column (33) inside the mounting frame (31), and the ball group (34) abuts against the connecting ear (27) and the push column (33) respectively. A first spring (36) is fixedly connected to the bottom end of the receiving plate (35). One end of the first spring (36) passes through the first leveling slot (13) and the second leveling slot (14), and is fixedly connected to the bottom end of the cooling box (1).

6. The quenching device for precision spring processing according to claim 5, characterized in that, The stacking member (4) includes a connecting plate (41) fixedly connected to the soft push rod (25). One end of the connecting plate (41) is rotatably connected to a linkage rod (42). One end of the linkage rod (42) is fixedly connected to a rotating shaft (43). One end of the rotating shaft (43) passes through the inner wall of the cooling box (1) and is rotatably connected to the cooling box (1). The other end of the linkage rod (42) is rotatably connected to a sleeve (44). One end of the sleeve (44) is fixedly connected to a lifting plate (45). One end of the lifting plate (45) is fixedly connected to an insertion plate (46). The insertion plate (46) is slidably inserted into the inner wall of the cooling box (1).

7. The quenching device for precision spring processing according to claim 6, characterized in that, A stacking box (47) is fixedly connected to one end of the cooling box (1). A feeding slot (48) is formed through the inner wall of the stacking box (47), and the feeding slot (48) passes through the cooling box (1). A communication slot (49) is formed through the inner wall of the stacking box (47), and the communication slot (49) passes through the cooling box (1). A receiving plate (410) abuts against the inner wall of the stacking box (47). A second spring (411) is fixedly connected to the bottom end of the receiving plate (410).

8. A quenching method for precision spring processing according to any one of claims 1-7, characterized in that, It includes the following steps: S1. First, the spring to be quenched rolls along the inclined plane of the first raceway (11) to the receiving plate (35) in the convex-shaped first leveling slot (13). When it is necessary to control the springs to fall into the second raceway (12) one by one, the hydraulic rod (22) drives the limiting plate (28) to move upward and insert into the limiting slot (17). By using the width limitation of the receiving plate (35), the second group of springs is pushed out of the receiving range, leaving only a single group of springs. S2. Then, when the limiting plate (28) moves upward, it drives the push column (33) through the ball group (34), pushes the receiving plate (35) downward and compresses the first spring (36) at the bottom end for buffering, keeping the inclined angle to prevent falling. After the receiving plate (35) enters the second raceway (12), it abuts against the inverted convex-shaped second leveling slot (14), rotates around the push column (33) to be flush with the second raceway (12), and the spring rolls in smoothly. S3. Finally, when the limit plate (28) moves upward, the connecting plate (41) links the lifting plate (45) to move downward to receive the spring of the second roller (12). After the limit plate (28) is reset, the lifting plate (45) moves upward to push the spring into the receiving plate (410) of the stacking box (47). The gravity of the spring causes the second spring (411) to contract. Finally, the top of the spring is flush with the bottom of the feed trough (48), completing equal-height stacking.

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