A positioning device for spring processing

Abstract

The present application provides a positioning device for spring processing, which relates to the technical field of spring processing. A positioning device for spring processing includes a frame, a driving mechanism is arranged on the frame, one end of the driving mechanism is key-connected with a mandrel, the mandrel slidably penetrates through the frame, a pitch correction mechanism is arranged on one side of the frame, the pitch correction mechanism includes a displacement component, a first telescopic member and a main correction wheel, the main correction wheel is elastically connected to the telescopic end of the first telescopic member, two auxiliary correction wheels are symmetrically arranged on both sides of the main correction wheel, the auxiliary correction wheels have a displacement function along the axial direction of the mandrel, and the main correction wheel, the auxiliary correction wheels and the mandrel are elastically abutted against each other to reduce the friction force between the main correction wheel, the auxiliary correction wheels and the mandrel. The driving mechanism is used to enable the main correction wheel and the auxiliary correction wheels to axially displace on the mandrel, which is convenient for pitch correction after the hot-rolled spring is wound around the mandrel.

Description

Technical Field

[0001] This application relates to the technical field of spring processing, and more specifically, to a positioning device for spring processing. Background Art

[0002] In the prior art, when processing springs with a relatively thick metal wire diameter, due to the high strength and hardness of the metal, hot coiling is usually used to form the springs.

[0003] In hot coiling processing, although the pitch of the spring can be controlled by the extension speed of the mandrel and the feeding speed of the feeding device, however, since the mandrel used for winding the spring in hot coiling processing usually has a smooth surface, the metal used for processing the spring attempts to return to its original shape due to its own elasticity during the hot coiling process, so it will have a certain impact on the actual pitch of the formed spring. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a positioning device for spring processing, including a frame, a driving mechanism is arranged on the frame, one end of the driving mechanism is key-connected to a mandrel, the mandrel slidably penetrates through the frame, a pressing member is fixedly connected to the side of the frame away from the driving mechanism, the pressing member is arranged along the radial direction of the mandrel, a pitch correction mechanism is arranged on the side of the frame away from the driving mechanism, the pitch correction mechanism includes a displacement assembly, a first telescopic member and a main correction wheel, one end of the displacement assembly is fixedly connected to one of the displacement ends of the driving mechanism, the first telescopic member is fixedly connected to the displacement assembly and is arranged along the radial direction of the mandrel, the main correction wheel is elastically connected to the telescopic end of the first telescopic member, the main correction wheel elastically abuts against the mandrel, two auxiliary correction wheels are symmetrically arranged on both sides of the main correction wheel, the two auxiliary correction wheels respectively elastically abut against the mandrel, the central axis of the main correction wheel and the central axes of the two auxiliary correction wheels are arranged in parallel, the auxiliary correction wheels have a displacement function along the axial direction of the mandrel, and the main correction wheel and the two auxiliary correction wheels correct the pitch of the hot coiled spring through a layout of being staggered in sequence.

[0005] Preferably, the driving mechanism includes a first displacement assembly, a bracket, a rotating assembly and a second displacement assembly, the first displacement assembly is fixedly connected to the frame along the axial direction of the mandrel; the bracket is fixedly connected to the displacement end of the first displacement assembly; the rotating assembly is fixedly connected to the bracket, and the output shaft of the rotating assembly is key-connected to the mandrel; the second displacement assembly is fixedly connected to the frame along the axial direction of the mandrel.

[0006] Preferably, the displacement assembly includes a mounting base, a connecting plate and a stabilizing rod. The first telescopic member is fixedly connected to the mounting base. The two ends of the connecting plate are respectively fixedly connected to the mounting base and the displacement end of the second displacement assembly. One end of the stabilizing rod is fixedly connected to the mounting base, and the other end of the stabilizing rod slidably penetrates through the bracket.

[0007] Preferably, a main mounting frame and a main elastic component are arranged between the main correction wheel and the first telescopic member. The main correction wheel is rotatably connected to the main mounting frame, and the main elastic component is arranged between the main mounting frame and the first telescopic member.

[0008] Preferably, a secondary mounting frame and a secondary elastic component are arranged between the secondary correction wheel and the main elastic component. The secondary correction wheel is rotatably arranged on the secondary mounting frame. The secondary mounting frame and the secondary elastic component are fixedly connected, and the secondary elastic component is slidably connected to the main elastic component.

[0009] Preferably, the main elastic component includes a main connecting frame, two sliding grooves, two main sliding rods and two main elastic members. The main connecting frame is connected to the telescopic end of the first telescopic member. The two sliding grooves are symmetrically arranged on both sides of the main connecting frame. The two main sliding rods are limitedly and slidably inserted into the main connecting frame, and the two main sliding rods are fixedly connected to the main mounting frame. The two main elastic members are respectively sleeved on the two main sliding rods, and the two ends of the main elastic member respectively abut against the main connecting frame and the main mounting frame.

[0010] Preferably, the main connecting frame is arranged in a U shape, and two eaves are symmetrically arranged on both sides of the U-shaped main connecting frame. The main mounting frame elastically displaces inside the U-shaped main connecting frame.

[0011] Preferably, the secondary elastic component includes a secondary connecting frame, a limiting block, two secondary sliding rods and two secondary elastic members. The secondary connecting frame slides on the main connecting frame. The limiting block is fixedly connected to the secondary connecting frame, and the limiting block and the sliding groove are slidably matched. The two secondary sliding rods are limitedly and slidably inserted into the secondary connecting frame, and the two secondary sliding rods are fixedly connected to the secondary mounting frame. The two secondary elastic members are respectively sleeved on the two secondary sliding rods, and the two ends of the secondary elastic member respectively abut against the secondary connecting frame and the secondary mounting frame.

[0012] Preferably, an arc is formed between the two secondary correction wheels and the main correction wheel. The elastic arrangement of the two secondary correction wheels relative to the main correction wheel enables the curvature of the arc formed among the three to change.

[0013] Preferably, a second telescopic member is arranged between the secondary connecting frame and the main connecting frame. The second telescopic member is fixedly connected to the eave of the main connecting frame, and the telescopic end of the second telescopic member is fixedly connected to the secondary connecting frame.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. By using the elastic connection between the first telescopic member, the main correction wheel and the auxiliary correction wheel, the elastic abutment between the main correction wheel and the mandrel is realized, reducing the friction force between the main correction wheel, the auxiliary correction wheel and the mandrel;

[0016] 2. By using the driving mechanism, the main correction wheel and the auxiliary correction wheel can axially displace on the mandrel, facilitating the pitch correction after the hot coil spring is wound around the mandrel;

[0017] 3. By using the staggered layout between the main correction wheel and the two auxiliary correction wheels, multi-point correction can be performed on the same pitch of the hot coil spring, avoiding damage caused by fewer force application points of the hot coil spring.

[0018] Additional aspects and advantages of the present application will be partly given in the following description, partly will become apparent from the following description, or can be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is the overall structural schematic diagram of a positioning device for spring processing according to an embodiment of the present application;

[0021] Figure 2 is the partial structural schematic diagram of a positioning device for spring processing according to an embodiment of the present application;

[0022] Figure 3 is the structural schematic diagram of the pitch correction mechanism according to an embodiment of the present application;

[0023] Figure 4 is the partial structural explosion diagram of the pitch correction mechanism according to an embodiment of the present application;

[0024] Figure 5 is the structural schematic diagram of the main correction wheel according to an embodiment of the present application;

[0025] Figure 6 is the partial structural schematic diagram of the main correction wheel according to an embodiment of the present application;

[0026] Figure 7 is according to an embodiment of the present application Figure 3 The enlarged schematic diagram of A in;

[0027] Figure 8 is an exploded view of the structure of the angle correction component according to an embodiment of the present application;

[0028] Figure 9 is a partial exploded view of the structure of the angle correction component according to an embodiment of the present application.

[0029] Icon: 1. Frame; 2. Driving mechanism; 21. First displacement component; 22. Bracket; 23. Rotating component; 24. Second displacement component; 3. Mandrel; 31. Clamping block; 4. Pressing member; 5. Pitch correction mechanism; 51. Displacement component; 511. Mounting seat; 512. Connecting plate; 513. Stabilizing rod; 52. First telescopic member; 53. Main correction wheel; 531. Main mounting frame; 532. Rotating shaft; 533. Outer shell; 534. Inner shell; 535. Arc-shaped strip; 54. Sub-correction wheel; 541. Sub-mounting frame; 55. Main elastic component; 551. Main connecting frame; 552. Chute; 553. Main sliding rod; 554. Main elastic member; 56. Sub-elastic component; 561. Sub-connecting frame; 562. Limiting block; 563. Sub-sliding rod; 564. Sub-elastic member; 57. Second telescopic member; 6. Angle correction component; 61. Threaded rod; 611. Straight rod; 612. Nut; 62. Upper wedge-shaped column; 621. Through hole; 622. Lower inclined surface; 63. Lower wedge-shaped column; 631. Blind hole; 632. Upper inclined surface. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0032] Embodiment 1, as Figures 1 - 9 shown, a positioning device for spring processing according to an embodiment of the present application includes a frame 1, a driving mechanism 2 is arranged on the frame 1, one end of the driving mechanism 2 is key-connected to a mandrel 3, the mandrel 3 slidably penetrates through the frame 1, and a pressing member 4 is fixedly connected to one side of the frame 1 away from the driving mechanism 2, and the pressing member 4 is arranged along the radial direction of the mandrel 3.

[0033] It should be noted that in the specific embodiment of the present application, the mandrel 3 can be replaced according to different springs to be processed to be applicable to the processing of springs with different diameters, where as Figure 1As shown, one end of the mandrel 3 away from the driving mechanism 2 is detachably connected with a clamping block 31 for clamping and fixing the end of the hot coiled spring. The mortgaging member 4 can be a component with a displacement function such as a hydraulic cylinder or an electric push rod in the prior art, and a pressing wheel is installed at its telescopic end for pressing the end of the hot coiled spring to ensure the forming of the hot coiled spring.

[0034] In a specific embodiment of the present application, as Figures 1 - 4 shown, a pitch correction mechanism 5 is provided on one side of the frame 1 away from the driving mechanism 2. The pitch correction mechanism 5 includes a displacement component 51, a first telescopic member 52 and a main correction wheel 53. One end of the displacement component 51 is fixedly connected to one of the displacement ends of the driving mechanism 2, so that the displacement component 51 can displace along the axial direction of the mandrel 3. The first telescopic member 52 is fixedly connected to the displacement component 51 and is arranged along the radial direction of the mandrel 3. The main correction wheel 53 is elastically connected to the telescopic end of the first telescopic member 52, so that the main correction wheel 53 elastically abuts against the mandrel 3. Two auxiliary correction wheels 54 are symmetrically arranged on both sides of the main correction wheel 53, and the two auxiliary correction wheels 54 respectively elastically abut against the mandrel 3. The central axes of the main correction wheel 53 and the two auxiliary correction wheels 54 are arranged in parallel. The auxiliary correction wheel 54 has a displacement function along the axial direction of the mandrel 3, so that a layout of sequential dislocation can be formed between the main correction wheel 53 and the two auxiliary correction wheels 54 to be applicable to springs with different pitches. The main correction wheel 53 and the two auxiliary correction wheels 54 correct the pitch of the hot coiled spring through the layout of sequential dislocation.

[0035] Specifically, as Figure 2 shown, the driving mechanism 2 includes a first displacement component 21, a bracket 22, a rotating component 23 and a second displacement component 24. The first displacement component 21 is fixedly connected to the frame 1 along the axial direction of the mandrel 3. The bracket 22 is fixedly connected to the displacement end of the first displacement component 21. The rotating component 23 is fixedly connected to the bracket 22. The output shaft of the rotating component 23 is key-connected to the mandrel 3. Thus, it can be understood that by changing the position of the displacement end of the first displacement component 21, the rotating component 23 and the mandrel 3 can be driven to displace axially synchronously.

[0036] The second displacement component 24 is fixedly connected to the frame 1 along the axial direction of the mandrel 3.

[0037] It should be noted that in a specific embodiment of the present application, the first displacement component 21 and the second displacement component 24 can be components in the prior art with a linear displacement function. The rotating component 23 can be composed of a motor and a reducer. The specific structures are all in the prior art and will not be elaborated here.

[0038] As Figure 2As shown, the displacement component 51 includes a mounting base 511, a connecting plate 512 and a stabilizing rod 513. The first telescopic member 52 is fixedly connected to the mounting base 511. The two ends of the connecting plate 512 are respectively fixedly connected to the mounting base 511 and the displacement end of the second displacement component 24. One end of the stabilizing rod 513 is fixedly connected to the mounting base 511, and the other end of the stabilizing rod 513 slidably penetrates through the bracket 22. Thus, it can be understood that through the position change of the displacement end of the second displacement component 24, the mounting base 511 can be driven to displace along the axial direction of the core shaft 3. Wherein the stabilizing rod 513 is slidably inserted into the bracket 22, which can ensure the stability of the mounting base 511 during the displacement process.

[0039] As Figure 3 and Figure 4 shown, the main correction wheel 53 is rotatably arranged on the main mounting frame 531. A main elastic component 55 is arranged between the main mounting frame 531 and the telescopic end of the first telescopic member 52. Further, the main elastic component 55 includes a main connection frame 551, two chutes 552, two main sliding rods 553 and two main elastic members 554. The main connection frame 551 is connected to the telescopic end of the first telescopic member 52. The two chutes 552 are symmetrically arranged on both sides of the main connection frame 551. The two main sliding rods 553 are limitedly and slidably inserted into the main connection frame 551, and the two main sliding rods 553 are fixedly connected to the main mounting frame 531. The two main elastic members 554 are respectively sleeved on the two main sliding rods 553, and the two ends of the main elastic member 554 respectively abut against the main connection frame 551 and the main mounting frame 531. The main connection frame 551 is arranged in a U shape, and two convex eaves are symmetrically arranged on both sides of the U-shaped main connection frame 551. The main mounting frame 531 elastically displaces inside the U-shaped main connection frame 551. In summary, it can be understood that the displacement directionality between the main correction wheel 53 and the main connection frame 551 is ensured by the two main sliding rods 553, and an elastic connection is formed between the main correction wheel 53 and the main connection frame 551 by the two main elastic members 554. Then it can be understood that when the telescopic end of the first telescopic member 52 extends, the main correction wheel 53 will be driven to displace towards the side wall of the core shaft 3 until it abuts and forms an elastic contact, avoiding rigid abutment damage between the main correction wheel 53 and the core shaft 3 due to the overlong stroke of the telescopic end of the first telescopic member 52.

[0040] Among them, the auxiliary correction wheel 54 is rotatably arranged on the auxiliary mounting bracket 541. An auxiliary elastic component 56 is arranged between the auxiliary mounting bracket 541 and the main elastic component 55. The auxiliary elastic component 56 is slidably connected to the main elastic component 55. Further, the auxiliary elastic component 56 includes an auxiliary connection frame 561, a limit block 562, two auxiliary sliding rods 563 and two auxiliary elastic members 564. The auxiliary connection frame 561 slides on the main connection frame 551; the limit block 562 is fixedly connected to the auxiliary connection frame 561, and the limit block 562 is slidably matched with the sliding groove 552; the two auxiliary sliding rods 563 are limited and slidably inserted into the auxiliary connection frame 561, and the two auxiliary sliding rods 563 are fixedly connected to the auxiliary mounting bracket 541; the two auxiliary elastic members 564 are respectively sleeved on the two auxiliary sliding rods 563, and the two ends of the auxiliary elastic member 564 respectively abut against the auxiliary connection frame 561 and the auxiliary mounting bracket 541. A second telescopic member 57 is arranged between the auxiliary connection frame 561 and the main connection frame 551. The second telescopic member 57 is fixedly connected to the flange of the main connection frame 551, and the telescopic end of the second telescopic member 57 is fixedly connected to the auxiliary connection frame 561. It can be seen from this that an elastic connection is also formed between the auxiliary correction wheel 54 and the auxiliary connection frame 561. And through the telescopic change of the telescopic end of the second telescopic member 57, the auxiliary connection frame 561 and the auxiliary correction wheel 54 thereon can be driven to displace relative to the main connection frame 551. The displacement direction is along the axial direction of the core shaft 3. In this way, a dislocation will occur between the auxiliary correction wheel 54 and the main correction wheel 53 in the axial direction of the core shaft 3.

[0041] It should be noted that an arc is formed between the two auxiliary correction wheels 54 and the main correction wheel 53. The elastic arrangement of the two auxiliary correction wheels 54 relative to the main correction wheel 53 enables the curvature of the arc formed among the three to change. It can be understood that when the diameter of the core shaft 3 changes (when replacing core shafts 3 with different diameters), since the two auxiliary correction wheels 54 are elastically connected to the auxiliary mounting bracket 541, the height of the auxiliary correction wheel 54 relative to the main correction wheel 53 will change (the larger the diameter of the core shaft 3, the smaller the height difference between the two). Therefore, an arc with a changing curvature will be formed. Such a design can be applicable to the processing of core shafts 3 with different diameters and springs with different diameters.

[0042] The following describes the use process of a positioning device for spring processing according to an embodiment of the present application with reference to the accompanying drawings:

[0043] When in specific use, according to the pitch of the spring to be processed, the main correction wheel 53 and the two sub-correction wheels 54 are axially displaced a certain distance along the core shaft 3 in advance through the second displacement assembly 24, and the two sub-correction wheels 54 are respectively displaced to both sides of the main correction wheel 53 through the second telescopic member 57, so that the three are inclined (staggered in sequence). Through the elongation of the telescopic end of the first telescopic member 52, the main correction wheel 53 and the two sub-correction wheels 54 are elastically abutted against the surface of the core shaft 3 respectively. The metal strip after high-temperature processing is sent radially to the end of the core shaft 3 with the clamping block 31 by an external feeding device, and the end of the metal strip is fixed on the core shaft 3 through the clamping block 31. Then, the first displacement assembly 21 and the rotating assembly 23 are started, so that the core shaft 3 rotates and axially displaces at the same time (it should be noted here that in the specific embodiment of the present application, the rotation speed, displacement speed of the core shaft 3 and the feeding speed of the metal strip are not considered for the time being). Because the core shaft 3 rotates and axially displaces at the same time, the metal strip will be wound on the core shaft 3 and form a spring shape. During the winding process, because the surface of the core shaft 3 is smooth and the metal strip will try to return to its original shape due to its own elasticity during the hot winding process, the pitch of the formed spring shape will have a certain error from the expected value. At this time, the second displacement assembly 24 drives the main correction wheel 53 and the two sub-correction wheels 54 to abut against the side of the wound spiral coil (as Figure 1 shown, the main correction wheel 53 and the two sub-correction wheels 54 are located in the same pitch of the spring at the same time, and apply a thrust force to the side of the clamping block 31), and the three wheels abut against the spiral strip on one side of the same pitch, so that the metal strip can avoid the "reset" phenomenon due to its own elasticity and improve the accuracy of the formed spring pitch. Because the main correction wheel 53 and the sub-correction wheels 54 are elastically abutted against the core shaft 3, when the core shaft 3 rotates, the three wheels will also rotate. In this way, the friction between the three wheels and the core shaft 3 and the wound metal strip is reduced, and the yield rate of the spring is improved.

[0044] In the related art, for this kind of positioning device for spring processing, because the metal strip used in the spring processing process has high temperature, the main correction wheel 53 and the sub-correction wheels 54 will generate high temperature when abuting against the metal strip for a long time. The existence of high temperature will reduce the service life of the main correction wheel 53 and the sub-correction wheels 54, and even seriously cause deformation due to overheating, resulting in deviation of the pressure exerted by the main correction wheel 53 and the sub-correction wheels 54 on the metal strip.

[0045] Embodiment 2. According to some embodiments of the present application, as Figures 3 - 6 shown, the structural sizes of the two sub-correction wheels 54 are exactly the same as those of the main correction wheel 53, and the main correction wheel 53 is symmetrically arranged left and right (as Figure 5As shown, there are multiple arc-shaped cavities inside the main correction wheel 53. One end of the arc-shaped cavity is open on the curved surface part of the main correction wheel 53, and the other end of the arc-shaped cavity is open on the end face part of the main correction wheel 53.

[0046] The following description takes one side of the main correction wheel 53 as an example. A rotating shaft 532 is coaxially and fixedly connected to the end face of the main correction wheel 53, and the rotating shaft 532 is rotatably connected to the main mounting bracket 531.

[0047] Among them, the end face part of the main correction wheel 53 is an outer shell 533. The outer shell 533 is arranged in a concave arc shape, and one end of the outer shell 533 close to the rotating shaft 532 is arranged in an open shape that gradually converges.

[0048] It can be understood that, as Figure 5 and Figure 6 shown, an annular air flow channel port is formed between the outer shell 533 and the rotating shaft 532.

[0049] Furthermore, the inner side of the cavity of the main correction wheel 53 is an inner shell 534. One end of the inner shell 534 away from the outer shell 533 is arranged in a plane, and one end of the inner shell 534 facing the outer shell 533 is arranged in a concave arc shape. The inner shell 534 and the rotating shaft 532 are coaxially and fixedly connected.

[0050] Furthermore, a plurality of arc-shaped strips 535 are circumferentially and evenly fixedly connected between the outer shell 533 and the inner shell 534. An arc-shaped cavity is formed between two adjacent arc-shaped strips 535. As Figure 5 and Figure 6 shown, there are ports of a plurality of air flow channels on the arc-shaped surface where the main correction wheel 53 contacts the core shaft 3.

[0051] It can be further understood that due to the uniform distribution of the arc-shaped strips 535, the arc-shaped cavities will be gradually changed along the radial direction, gradually shrinking from the outside to the direction close to the axis.

[0052] Thus, in specific use, the rotation of the mandrel 3 will force the main correction wheel 53 and the auxiliary correction wheel 54 to rotate synchronously. Therefore, the rotating main correction wheel 53 and auxiliary correction wheel 54 will disturb the air flow due to the multiple arc-shaped strips 535 therein. The multiple arc-shaped strips 535 are used to make the air flow enter the arc-shaped cavity from the ports of the multiple air flow channels existing on the arc-shaped surfaces where the main correction wheel 53 and the auxiliary correction wheel 54 are in contact with the mandrel 3 respectively, and gush out from the annular air flow channel ports formed between the housing 533 and the rotating shaft 532. It can be understood that since the structural sizes of the main correction wheel 53 and the auxiliary correction wheel 54 are the same, the air flow will enter from one side of the arc-shaped surface on both the main correction wheel 53 and the auxiliary correction wheel 54 and gush out from the annular ports at both ends. By using the circulation of the air flow in the main correction wheel 53 and the auxiliary correction wheel 54, a certain heat dissipation effect will be achieved on the main correction wheel 53 and the auxiliary correction wheel 54. The uniform arrangement of the multiple arc-shaped cavities further improves the heat dissipation effect. At the same time, the gradually changing design of the sizes of the arc-shaped cavities can accelerate the flow speed of the air flow in the wheels and further enhance the heat dissipation effect.

[0053] In the related art, for this positioning device for spring processing, since the main correction wheel 53 and the auxiliary correction wheel 54 are in contact with the mandrel 3, and the mandrel 3 not only rotates but also undergoes axial displacement at the same time, a sliding phenomenon will occur between the main correction wheel 53, the auxiliary correction wheel 54 and the mandrel 3 (the sliding trajectory is a spiral line on the mandrel 3). Moreover, because the metal strip has a large amount of heat during the spring processing, this will cause the main correction wheel 53, the auxiliary correction wheel 54 and the mandrel 3 to be severely worn due to friction, affecting the precision of spring processing.

[0054] Embodiment 3. According to some embodiments of the present application, as Figure 3 、 Figure 7 and Figure 8 shown, an angle correction assembly 6 is provided between the first telescopic member 52 and the main connection frame 551. The angle correction assembly 6 includes a threaded rod 61, an upper wedge-shaped column 62 and a lower wedge-shaped column 63. The threaded rod 61 is coaxially fixed to the telescopic end of the first telescopic member 52; the upper wedge-shaped column 62 is slidably sleeved on the threaded rod 61; the lower wedge-shaped column 63 is fixed to the main connection frame 551, and the lower wedge-shaped column 63 is adapted to the upper wedge-shaped column 62.

[0055] Specifically, a straight rod 611 is coaxially fixed to the end of the threaded rod 61 away from the first telescopic member 52, and a nut 612 is in threaded engagement with the threaded rod 61.

[0056] As Figure 7 and Figure 8 shown, the upper wedge-shaped column 62 is coaxially provided with a through hole 621, the straight rod 611 is slidably inserted into the through hole 621, and the bottom end of the upper wedge-shaped column 62 is provided with a lower inclined surface 622.

[0057] Furthermore, the lower wedge-shaped column 63 is coaxially provided with a blind hole 631 , the straight rod 611 is rotatably inserted into the blind hole 631 , and the top end of the lower wedge-shaped column 63 is provided with an upper inclined surface 632 that matches the lower inclined surface 622 .

[0058] Therefore, it can be understood that, according to the axial displacement speed of the core shaft 3, the angles of the main correction wheel 53 and the two auxiliary correction wheels 54 on both sides thereof can be adjusted to make the three wheels and the core shaft 3 inclined. In this way, the sliding phenomenon originally existing between the wheels and the core shaft 3 is reduced, and the sliding phenomenon is transformed into the wheel rotation action as much as possible. Specifically, the nut 612 is rotated to make the upper wedge column 62 move upward along the straight rod 611, that is, at this time, the two inclined surfaces of the upper wedge column 62 and the lower wedge column 63 are out of the fit state, and at this time, the main connecting frame 551 can occur After rotating and adjusting the specific angle of the main connecting frame 551, rotate the nut 612 in the opposite direction to move the upper wedge column 62 downward along the straight rod 611, and make the lower inclined surface 622 and the upper inclined surface 632 of the lower wedge column 63 form a fit state again. At this time, the lower wedge column 63 is restricted and cannot rotate, so the main correction wheel 53 and the auxiliary correction wheel 54 form an angle locking action relative to the core shaft 3, and the change in the angle of the three wheels further makes the end faces of the three wheels and the metal strips to be abutted fit more closely, thereby further improving the yield rate in the spring processing process.

[0059] It should be noted that the specific models and specifications of the first displacement component 21, the rotating component 23, the second displacement component 24, the core shaft 3, the pressure member 4, the first telescopic member 52, the main elastic member 554, the auxiliary elastic member 564, the threaded rod 61 and the nut 612 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in the field, so it will not be described in detail.

[0060] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A positioning device for spring processing, including a frame (1), a driving mechanism (2) is arranged on the frame (1), one end of the driving mechanism (2) is key-connected to a mandrel (3), the mandrel (3) slides through the frame (1), a pressing member (4) is fixedly connected to the side of the frame (1) away from the driving mechanism (2), and the pressing member (4) is arranged radially along the mandrel (3), and it is characterized in that: A pitch correction mechanism (5) is arranged on the side of the frame (1) away from the driving mechanism (2). The pitch correction mechanism (5) includes a displacement component (51), a first telescopic member (52) and a main correction wheel (53). One end of the displacement component (51) is fixedly connected to one displacement end of the driving mechanism (2). The first telescopic member (52) is fixedly connected to the displacement component (51) and is arranged radially along the mandrel (3). The main correction wheel (53) is elastically connected to the telescopic end of the first telescopic member (52). The main correction wheel (53) elastically abuts against the mandrel (3). Two auxiliary correction wheels (54) are symmetrically arranged on both sides of the main correction wheel (53). The two auxiliary correction wheels (54) respectively elastically abut against the mandrel (3). The central axes of the main correction wheel (53) and the two auxiliary correction wheels (54) are arranged in parallel. The auxiliary correction wheel (54) has a displacement function along the axial direction of the mandrel (3). The main correction wheel (53) and the two auxiliary correction wheels (54) correct the pitch of the hot-rolled spring through a layout with sequential dislocation; A main mounting frame (531) and a main elastic component (55) are arranged between the main correction wheel (53) and the first telescopic member (52). The main correction wheel (53) is rotatably connected to the main mounting frame (531). The main elastic component (55) is arranged between the main mounting frame (531) and the first telescopic member (52). An auxiliary mounting frame (541) and an auxiliary elastic component (56) are arranged between the auxiliary correction wheel (54) and the main elastic component (55). The auxiliary correction wheel (54) is rotatably arranged on the auxiliary mounting frame (541). The auxiliary mounting frame (541) and the auxiliary elastic component (56) are fixedly connected. The auxiliary elastic component (56) is slidably connected to the main elastic component (55); An arc is formed between the two auxiliary correction wheels (54) and the main correction wheel (53). The elastic arrangement of the two auxiliary correction wheels (54) relative to the main correction wheel (53) enables the curvature of the arc formed among the three to change.

2. A positioning device for spring processing as described in claim 1, characterized in that, The driving mechanism (2) includes: A first displacement component (21), the first displacement component (21) is fixedly connected to the frame (1) along the axial direction of the mandrel (3); A bracket (22), the bracket (22) is fixedly connected to the displacement end of the first displacement component (21); A rotating component (23), the rotating component (23) is fixedly connected to the bracket (22), and the output shaft of the rotating component (23) is key-connected to the mandrel (3); The second displacement component (24) is fixedly connected to the frame (1) along the axial direction of the mandrel (3).

3. A positioning device for spring processing according to claim 2, characterized in that, The displacement component (51) includes: A mounting seat (511) to which the first telescopic member (52) is fixedly connected; A connecting plate (512) whose two ends are respectively fixedly connected to the mounting seat (511) and the displacement end of the second displacement component (24); A stabilizing rod (513) with one end fixedly connected to the mounting seat (511) and the other end slidably penetrating through the bracket (22).

4. A positioning device for spring processing according to claim 1, wherein, The main elastic component (55) includes: A main connecting frame (551) connected to the telescopic end of the first telescopic member (52); Two sliding grooves (552) symmetrically arranged on both sides of the main connecting frame (551); Two main sliding rods (553) limitedly and slidably inserted into the main connecting frame (551), and the two main sliding rods (553) are fixedly connected to the main mounting frame (531); Two main elastic members (554) respectively sleeved on the two main sliding rods (553), and the two ends of the main elastic member (554) respectively abut against the main connecting frame (551) and the main mounting frame (531).

5. The positioning device for spring processing according to claim 4, characterized in that, The main connecting frame (551) is arranged in a U shape, and two convex eaves are symmetrically arranged on both sides of the U-shaped main connecting frame (551), and the main mounting frame (531) elastically displaces inside the U-shaped main connecting frame (551).

6. The positioning device for spring processing according to claim 4, wherein The auxiliary elastic component (56) includes: An auxiliary connecting frame (561) sliding on the main connecting frame (551); A limiting block (562) fixedly connected to the auxiliary connecting frame (561), and the limiting block (562) is in sliding fit with the sliding groove (552); Two auxiliary sliding rods (563) limitedly and slidably inserted into the auxiliary connecting frame (561), and the two auxiliary sliding rods (563) are fixedly connected to the auxiliary mounting frame (541); Two auxiliary elastic members (564) respectively sleeved on the two auxiliary sliding rods (563), and the two ends of the auxiliary elastic member (564) respectively abut against the auxiliary connecting frame (561) and the auxiliary mounting frame (541).

7. A positioning device for spring processing according to claim 6, characterized in that, A second telescopic member (57) is arranged between the auxiliary connecting frame (561) and the main connecting frame (551), the second telescopic member (57) is fixedly connected to the convex eave of the main connecting frame (551), and the telescopic end of the second telescopic member (57) is fixedly connected to the auxiliary connecting frame (561).

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