Variable-diameter spring machining device

Abstract

The invention provides a variable-diameter spring machining device, and relates to the technical field of spring machining. The variable-diameter spring machining device comprises a mounting frame, a tool bit, a driving mechanism, a straightening mechanism, a pitch changing mechanism, a variable-diameter mechanism and a cut-off mechanism are arranged on the mounting frame, the cut-off mechanism comprises a sliding seat, a fixing seat, a lifting assembly, a pressing head and a clamping block, and a slope part is arranged on the side, away from the pressing head, of the clamping block. An inclined block is arranged on the side, facing the pressing head, of the clamping block, the clamping block is inserted between the tail ring of the variable-diameter spring and the penultimate ring in advance, the pitches of the tail ring of the variable-diameter spring and the penultimate ring are forced to be increased temporarily, the position of the tail ring of the variable-diameter spring on the tool bit is limited, the tail ring of the variable-diameter spring is prevented from being separated from the range of the tool bit, and the machining precision is improved. The inclined block enables the steel wire of the tail ring of the variable-diameter spring to move towards the center of the pressing head, so that the steel wire can be completely pressed when the pressing head moves downwards, the crimping position is prevented from deviating to one side of the pressing head, the cutting efficiency is improved, and the load of the pressing head is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of spring processing, and in particular to a variable diameter spring processing device. Background Art

[0002] In the prior art, for example, a spring machine for producing and processing variable diameter springs disclosed in the publication (announcement) number CN118080741A includes a spring machine body, on which a straightening mechanism, a diameter reducing mechanism, a pitch changing mechanism and a cutting mechanism are provided, and the cutting mechanism includes a cutter, a mounting seat, a pressing head and a driving assembly.

[0003] This solution uses a mounting seat and a drive assembly to control the movement trajectory of the pressure head, so that the pressure head avoids the second circle of steel wire at the tail end of the variable diameter spring when moving downward, avoiding premature contact with the second circle of steel wire and causing the variable diameter spring to twist and deform, and then the pressure head is extended to the gap between the tail circle of the variable diameter spring and the second circle of the tail end of the variable diameter spring, ensuring that the pressure head can completely cover the steel wire of the tail circle of the variable diameter spring, avoiding the problem of pressure head wearing the variable diameter spring and spring twisting or eccentricity caused by squeezing the variable diameter spring, effectively improving the processing quality of the variable diameter spring, and at the same time avoiding unnecessary wear between the pressure head and the second circle of steel wire at the tail end of the variable diameter spring, thereby increasing the service life of the pressure head.

[0004] However, in this scheme, if a variable diameter spring with a relatively small pitch and a relatively small diameter change is encountered, it is difficult for the pressure head to extend into the gap between the tail coil of the variable diameter spring and the second coil at the tail end of the variable diameter spring. At this time, it is difficult for the pressure head to cover the tail coil of the variable diameter spring alone; secondly, in the production of this type of variable diameter spring, even if the pressure head in this scheme extends into the gap between the tail coil of the variable diameter spring and the second coil at the tail end of the variable diameter spring, the pressure head covers the tail coil of the variable diameter spring more biasedly due to the depth of extension of the pressure head. At this time, when the variable diameter spring is cut off, the load on the pressure head is more serious, and the spring may slip from the bottom of the pressure head due to the biased covering position, resulting in cutting failure. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a variable diameter spring processing device, comprising a mounting frame, on which a cutter head, a driving mechanism, a straightening mechanism, a pitch changing mechanism, a diameter changing mechanism and a cutting mechanism are arranged, the pitch changing mechanism can be displaced towards and away from the mounting frame; the diameter changing mechanism can be displaced towards and away from the mounting frame, and the diameter changing mechanism can realize angle change on the mounting frame; the cutting mechanism comprises a slide seat, a fixed seat, a lifting assembly, a pressure head and a clamping block, the slide seat displaces axially along the cutter head, the fixed seat is fixed to the slide seat, the lifting assembly and the fixed seat are slidably matched, the lifting assembly displaces radially along the cutter head, the pressure head is fixed to the lifting assembly, the clamping block and the lifting assembly are slidably matched, and the clamping block displaces radially along the cutter head; the clamping block is provided with an inclined portion on a side away from the pressure head, and the clamping block is provided with an inclined block on a side facing the pressure head, and the inclined block and the inclined portion make the end of the clamping block facing the cutter head pointed.

[0006] Preferably, the pitch changing mechanism includes a linear displacement component, a driving motor, a base and a pitch adjustment block, the linear displacement component is fixedly connected to the mounting frame; the driving motor is fixedly connected to the displacement end of the linear displacement component; the base is slidably connected to the mounting frame, the output shaft of the driving motor passes through the base and is keyed to a driving gear, and the driving gear is rotatably connected to the base; the pitch adjustment block is radially slidably embedded in the base along the cutter head, and a passive rack is provided on one side of the pitch adjustment block, and the passive rack is meshed with the driving gear.

[0007] Preferably, two reducing mechanisms are symmetrically arranged, and the structures and sizes of the two reducing mechanisms are the same. The reducing mechanism comprises: a reducing rod, a first telescopic member, a mounting block, a connecting seat, a second telescopic member and a third telescopic member. The reducing rod is coaxially fixed to the piston end of the first telescopic member, the first telescopic member is fixed to the mounting block for controlling the radial displacement of the reducing rod along the cutter head, an arc groove is provided on the mounting frame, the connecting seat passes through the arc groove, the mounting block is slidably mounted on the connecting seat, the second telescopic member is rotatably connected to the mounting frame and fixed to the connecting seat, the second telescopic member is used to control the displacement of the connecting seat along the arc groove, the third telescopic member is fixed to the connecting seat, and the piston end of the third telescopic member slides through the connecting seat and is fixed to the mounting block.

[0008] Preferably, a fourth telescopic member is fixedly connected to the slide seat, and the fourth telescopic member is used to drive the lifting assembly to move radially along the cutter head.

[0009] Preferably, a slide groove is provided in the fixed seat, and the lifting assembly slides in the slide groove. The lifting assembly includes a first lifting block and a second lifting block, and the second lifting block extends out of the slide groove. A connected slide cavity is provided on the same side of the first lifting block and the second lifting block, and positioning grooves are symmetrically provided in the slide cavity on the first lifting block.

[0010] Preferably, the pressure head is arranged in an L shape, and one end of the pressure head is fixedly connected to a mounting rod.

[0011] Preferably, one end of the clamping block away from the inclined portion and the inclined block is symmetrically fixed with two positioning bars, and the positioning bars and the positioning grooves are slidably matched.

[0012] Preferably, the vertical shadow of the pressure head covers the inclined block.

[0013] Preferably, a fifth telescopic member is fixedly connected to the fixing seat, and the fifth telescopic member is used to drive the clamping block to move radially along the cutter head.

[0014] Preferably, a sixth telescopic member is fixedly connected to the mounting frame, and the sixth telescopic member is used to drive the slide seat to move axially along the tool head on the mounting frame.

[0015] The beneficial effects of the present invention are: 1. The independent displacement of the clamping block can be pre-inserted into the gap between the tail coil and the penultimate coil of the variable diameter spring, forcing the pitch between the tail coil and the penultimate coil of the variable diameter spring to temporarily increase, and the position of the tail coil of the variable diameter spring on the cutter head is limited, which can prevent the steel wire of the tail coil of the variable diameter spring from escaping from the range of the cutter head; 2. The inclined block can be used to move the tail coil wire of the variable diameter spring to the center of the bottom of the pressure head, so that the pressure head can move downward to cooperate with the cutter head to completely press the wire when cutting the wire, preventing the crimping position from deviating to one side of the pressure head, improving the cutting efficiency and reducing the load on the pressure head; 3. By utilizing the displacement of the slide seat along the axial direction of the cutter head, the crimping range of the pressure head can be corrected, thereby avoiding large deviations between the pressure head and the tail ring wire of the variable diameter spring, and improving the centering effect of the inclined block on the wire.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The overall structure of a variable diameter spring processing device according to an embodiment of the present application is shown in FIG. Figure 1 ; Figure 2 The overall structure of a variable diameter spring processing device according to an embodiment of the present application is shown in FIG. Figure 2 ; Figure 3 It is a partial structural schematic diagram of a variable diameter spring processing device according to an embodiment of the present application; Figure 4 According to the embodiment of the present application Figure 1 A is an enlarged schematic diagram; Figure 5 is a schematic diagram of a partial structure of a diameter-changing mechanism according to an embodiment of the present application; Figure 6 is a schematic diagram of a partial structure of a cutting mechanism according to an embodiment of the present application; Figure 7 is a structural exploded diagram of a cutting mechanism according to an embodiment of the present application; Figure 8 is an exploded view of a local structure of a cutting mechanism according to an embodiment of the present application; Fig. 9 is a structural exploded diagram of a pressure head and a clamping block according to an embodiment of the present application; Fig.10 1 is a schematic structural diagram of a pressure head and a clamping block from three perspectives according to an embodiment of the present application; Fig.11 is a structural schematic diagram of an auxiliary mechanism according to an embodiment of the present application; Fig.12 is a partial structural schematic diagram of an auxiliary mechanism according to an embodiment of the present application; Fig.13 is a schematic diagram of the position of a quick release mechanism according to an embodiment of the present application; Fig.14 is a structural schematic diagram of a quick release mechanism according to an embodiment of the present application; Fig.15 It is a schematic diagram of the internal structure of the second lifting block according to an embodiment of the present application.

[0019] Icons: 1. Mounting frame; 11. Cutter head; 12. Arc groove; 2. Driving mechanism; 3. Straightening mechanism; 4. Pitch changing mechanism; 41. Linear displacement assembly; 42. Driving motor; 421. Active gear; 43. Base; 44. Pitch adjusting block; 441. Passive rack; 5. Variable diameter mechanism; 51. Variable diameter rod; 52. First telescopic member; 53. Mounting block; 54. Connecting seat; 55. Second telescopic member; 56. Third telescopic member; 6. Cutting mechanism; 61. Sliding seat; 62. Fourth telescopic member; 621. Connecting plate; 622. Support rod; 63. Fixed seat; 631. Slide; 64. Lifting assembly; 641. First lifting block; 642 , second lifting block; 643, sliding cavity; 644, positioning groove; 645, through groove; 646, installation cavity; 647, limiting block; 648, deformation cavity; 649, through groove; 65, pressure head; 651, installation rod; 66, clamping block; 661, positioning strip; 662, inclined portion; 663, inclined block; 67, fifth telescopic member; 671, connecting block; 68, sixth telescopic member; 7, auxiliary mechanism; 71, elastic component; 711, fixing cylinder; 712, sliding rod; 713, first spring; 72, limiting cover; 721, arc block; 722, arc notch; 8, quick release mechanism; 81, limiting plate; 82, positioning rod; 83, second spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0021] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Embodiment 1, as Figure 1-Figure 15 As shown, a variable diameter spring processing device according to an embodiment of the present application includes a mounting frame 1, on which a cutter head 11, a driving mechanism 2, a straightening mechanism 3, a pitch changing mechanism 4, a variable diameter mechanism 5 and a cutting mechanism 6 are arranged. It should be noted that the driving mechanism 2 is used to adjust the straightening mechanism 3 and Figure 1 The left side in the middle provides power for the marked conveying end. The driving mechanism 2 and the straightening mechanism 3 are both existing technologies and will not be described in detail here.

[0023] In a specific embodiment of the present application, the pitch changing mechanism 4 can move closer to or further away from the mounting frame 1 , further increasing the adjustment range of the pitch changing mechanism 4 on the pitch of the variable diameter spring.

[0024] Specifically, Figure 3 and Figure 4 As shown, the pitch changing mechanism 4 includes a linear displacement component 41, a driving motor 42, a base 43 and a pitch adjusting block 44. The linear displacement component 41 is fixed to the mounting frame 1; the driving motor 42 is fixed to the displacement end of the linear displacement component 41; the base 43 is slidably connected to the mounting frame 1, the output shaft of the driving motor 42 passes through the base 43 and is keyed to a driving gear 421, and the driving gear 421 is rotatably connected to the base 43; the pitch adjusting block 44 is slidably embedded in the base 43 along the radial direction of the cutter head 11, and a passive rack 441 is provided on one side of the pitch adjusting block 44. The passive rack 441 is meshed with the active gear 421. It can be understood that the active gear 421 is driven to rotate by the drive motor 42, and then the pitch adjustment block 44 is displaced up and down on the base 43 by the passive rack 441, so that the pitch of the variable diameter spring in production can be adjusted. The linear displacement component 41 can drive the drive motor 42 to perform linear displacement, so that the base 43 moves closer to or away from the mounting frame 1, and then the pitch adjustment block 44 on the base 43 is synchronously displaced, so that the pitch adjustment range can be further changed.

[0025] In a specific embodiment of the present application, the diameter-changing mechanism 5 can move closer to and farther from the mounting frame 1, and the diameter-changing mechanism 5 can achieve angle changes on the mounting frame 1, thereby improving the adaptability of the diameter-changing mechanism 5 to different diameter-changing springs.

[0026] Specifically, Figure 1 , Figure 3 and Figure 5As shown, two reducing mechanisms 5 are symmetrically arranged, and the structures and sizes of the two reducing mechanisms 5 are the same. The reducing mechanism 5 includes: a reducing rod 51, a first telescopic member 52, a mounting block 53, a connecting seat 54, a second telescopic member 55 and a third telescopic member 56. The reducing rod 51 is coaxially fixed to the piston end of the first telescopic member 52, the first telescopic member 52 is fixed to the mounting block 53 for controlling the radial displacement of the reducing rod 51 along the cutter head 11, an arc groove 12 is arranged on the mounting frame 1, the connecting seat 54 passes through the arc groove 12, the mounting block 53 is slidably sleeved on the connecting seat 54, the second telescopic member 55 is rotatably connected to the mounting frame 1 and fixed to the connecting seat 54, the second telescopic member 55 is used to control the displacement of the connecting seat 54 along the arc groove 12, the third telescopic member 56 is fixed to the connecting seat 54, and the third telescopic member 56 The piston end slides through the connecting seat 54 and is fixedly connected to the mounting block 53. It can be understood that the third telescopic member 56 can drive the mounting block 53 to axially displace relative to the connecting seat 54, so that the reducing rod 51 will be displaced along the axial direction of the cutter head 11. The design of the two reducing mechanisms 5 in the present application can further ensure the stability and quality of the reducing spring during the production process; it can be further understood that the second telescopic member 55 can drive the connecting seat 54 to displace along the arc groove 12, so that the reducing rod 51 will change its angle relative to the cutter head 11, further improving the stability and quality of the reducing spring production; the first telescopic member 52 can drive the reducing rod 51 to displace along the radial direction of the cutter head 11, so that the reducing rod 51 can adapt to the changes in different diameters of each circle of the reducing spring.

[0027] It should be noted that, in the specific embodiment of the present application, the mounting block 53 can and can only undergo axial displacement on the connecting seat 54, but cannot undergo rotation.

[0028] In the specific embodiments of the present application, Figure 6-Figure 10 As shown, the cutting mechanism 6 includes a slide 61, a fixed seat 63, a lifting assembly 64, a pressure head 65 and a clamping block 66. The slide 61 displaces axially along the cutter head 11, the fixed seat 63 is fixed to the slide 61, the lifting assembly 64 and the fixed seat 63 slide in cooperation, the lifting assembly 64 displaces radially along the cutter head 11, the pressure head 65 is fixed to the lifting assembly 64, the clamping block 66 and the lifting assembly 64 slide in cooperation, and the clamping block 66 displaces radially along the cutter head 11. It can be understood that the displacement of the slide 61 will drive the fixed seat 63, the lifting assembly 64, the pressure head 65 and the clamping block 66 thereon to displace synchronously in the same direction, so that the pressure head 65 and the clamping block 66 can achieve axial displacement relative to the cutter head 11, and the specific positions of the clamping block 66 and the pressure head 65 relative to the lower variable spring are improved, thereby improving the cutting accuracy.

[0029] Among them, a fourth telescopic member 62 is fixedly connected to the sliding seat 61, and the fourth telescopic member 62 is used to drive the lifting assembly 64 to move radially along the cutter head 11. Specifically, the piston end of the fourth telescopic member 62 is fixedly connected to a connecting plate 621, and one end of the connecting plate 621 is fixedly connected to a support rod 622, and the support rod 622 is fixedly connected to the lifting assembly 64.

[0030] A slide groove 631 is provided in the fixed seat 63, and the lifting assembly 64 slides in the slide groove 631. It should be noted that the lifting assembly 64 can and can only be lifted and slid along the slide groove 631 in the fixed seat 63 to achieve height change.

[0031] Specifically, the lifting assembly 64 includes a first lifting block 641 and a second lifting block 642. The second lifting block 642 extends out of the slide groove 631. A connected slide cavity 643 is provided on the same side of the first lifting block 641 and the second lifting block 642. Positioning grooves 644 are symmetrically provided in the slide cavity 643 on the first lifting block 641.

[0032] Further, the pressure head 65 in the present application is L-shaped, and one end of the pressure head 65 is fixedly connected to a mounting rod 651. For ease of understanding, Fig. 9 and Fig.10 As shown, in the subsequent description, the end of the L-shaped pressing head 65 on which the mounting rod 651 is installed is described as the horizontal end, and the end of the pressing head 65 abutting against the variable diameter spring is described as the vertical end.

[0033] like Figure 7-Figure 10 As shown, a sloped portion 662 is provided on the side of the clamping block 66 away from the pressure head 65, and a sloped block 663 is provided on the side of the clamping block 66 facing the pressure head 65. The sloped block 663 and the sloped portion 662 make the end of the clamping block 66 facing the cutter head 11 pointed.

[0034] Furthermore, one end of the clamping block 66 away from the inclined portion 662 and the inclined block 663 is symmetrically fixed with two positioning bars 661 , and the positioning bars 661 and the positioning grooves 644 are slidably matched to limit the displacement stroke of the clamping block 66 on the first lifting block 641 .

[0035] Furthermore, the vertical shadow of the pressure head 65 covers the inclined block 663 .

[0036] like Fig.10 As shown in the left picture in the middle, the pressure head 65 and the clamping block 66 are schematic diagrams viewed from a right angle.

[0037] like Fig.10 As shown in the middle picture, the pressing head 65 and the clamping block 66 are schematic diagrams from a rear view angle. From this perspective, the part of the horizontal end of the pressing head 65 extending beyond the vertical end covers the inclined block 663.

[0038] like Fig.10As shown in the middle right picture, the pressure head 65 and the clamping block 66 are schematic diagrams viewed from a left angle. At this viewing angle, the width of the top of the inclined block 663 does not exceed half of the width of the horizontal end of the pressure head 65.

[0039] It can be seen from this that when the clamping block 66 is displaced downward in advance, its tip will force the tail turn and the penultimate turn of the variable diameter spring to separate, that is, force the pitch here to temporarily increase, and isolate the tail turn and the penultimate turn of the variable diameter spring, thereby preventing the pressure head 65 from touching the penultimate turn of the variable diameter spring during the downward pressing process. At the same time, the design of the inclined block 663 will also cause the steel wire of the tail turn of the variable diameter spring to be displaced toward the center of the bottom end of the pressure head 65 during the extrusion process, forcing the steel wire of the tail turn of the variable diameter spring to avoid being biased toward one side of the pressure head 65 during the downward pressing process, thereby improving the stability during the cutting process.

[0040] In a specific embodiment of the present application, a fifth telescopic member 67 is fixedly connected to the fixed seat 63, and the fifth telescopic member 67 is used to drive the clamping block 66 to radially displace along the cutter head 11. Specifically, the piston end of the fifth telescopic member 67 is fixedly connected to a connecting block 671, and the connecting block 671 is fixedly connected to the clamping block 66; a sixth telescopic member 68 is fixedly connected to the mounting frame 1, and the sixth telescopic member 68 is used to drive the slide seat 61 to axially displace along the cutter head 11 on the mounting frame 1.

[0041] The following describes the use process of a variable diameter spring processing device according to an embodiment of the present application with reference to the accompanying drawings: The steel wire used for producing the variable diameter spring is conveyed to the direction of the cutter head 11 through the straightening mechanism 3, and the variable diameter rods 51 on the two variable diameter mechanisms 5 force the steel wire to curl, and the change of the spring diameter is realized by the displacement change of the variable diameter rods 51, and the pitch of the spring is adjusted by the pitch changing mechanism 4 to realize the production and processing of the variable diameter spring. After the processing and forming, the displacement of the piston end of the fifth telescopic member 67 drives the clamping block 66 to move downward, and the tip of the clamping block 66 (the inclined portion 662 and the inclined block 663) is inserted between the tail coil and the penultimate coil of the variable diameter spring. At this time, no matter how small the pitch between the variable diameter springs is, the clamping block 66 can be realized. The fourth telescopic member 62 is then used to move the piston end of the fourth telescopic member 62 to drive the pressure head 65 to move downward and crimp on the tail coil of the variable spring, and cooperate with the cutter head 11 and the pressure head 65 that continues to move downward to form a cutting action. During this process, the pressure head 65 forms a separate cover on the tail coil of the variable spring, and does not cause crimping or wear on the penultimate coil of the variable spring. At the same time, the inclined block 663 of the clamping block 66 also forces the tail coil of the variable spring to move toward the center of the pressure head 65 to prevent the tail coil of the variable spring from detaching from the pressure head 65, thereby improving the cutting effect and the production quality of the variable spring.

[0042] In the related art, in this type of variable diameter spring processing device, during the cutting process, the steel wire at the cutter head 11 has a certain reset tendency due to twisting. At the moment of cutting, the steel wire will rebound toward the variable diameter rod 51 due to reset. The violent reset of the steel wire will cause violent shaking, further causing separation and misalignment between the steel wire and the variable diameter rod 51. Subsequent production will also require the steel wire to be clamped in the groove at the end of the variable diameter rod 51 to realize the variable diameter operation in spring production, which will increase the workload and reduce production efficiency.

[0043] Embodiment 2, according to some embodiments of the present application, such as Figure 1 , Fig.11 and Fig.12 As shown, an auxiliary mechanism 7 is fixedly connected to the bottom end of the fixed seat 63, and the auxiliary mechanism 7 is located on the side of the pressure head 65 facing the diameter-changing mechanism 5. The auxiliary mechanism 7 includes an elastic component 71 and a limit cover 72. The elastic component 71 is fixedly connected to the fixed seat 63, and the limit cover 72 is fixedly connected to the elastic component 71. The limit cover 72 is used to clamp the steel wire of the tail ring of the diameter-changing spring.

[0044] Specifically, the elastic component 71 includes a fixed tube 711, a slide rod 712 and a first spring 713. The fixed tube 711 is fixedly connected to the fixed seat 63; the slide rod 712 is limitedly slidably inserted into the fixed tube 711; the first spring 713 is arranged in the fixed tube 711, and the first spring 713 and the slide rod 712 are in contact.

[0045] It should be noted that, in the specific embodiment of the present application, the sliding rod 712 can and can only be axially displaced in the fixing tube 711, but cannot be rotated.

[0046] Specifically, the limiting cover 72 is fixed to one end of the sliding rod 712 extending out of the fixing tube 711 . The limiting cover 72 is arranged in an arc shape and is arranged along the radial direction of the cutter head 11 .

[0047] Furthermore, two arc blocks 721 are symmetrically fixed inside the limiting cover 72 . The arc blocks 721 are arranged along the axial direction of the limiting cover 72 , and arc notches 722 are arranged at the bottom ends of the arc blocks 721 .

[0048] In the specific embodiment of the present application, in the initial state, the limiting cover 72 is located above the cutter head 11 and is used to clamp the steel wire. Because it has an elastic displacement function, it can be suitable for clamping steel wires of different thicknesses. Specifically, the arc notch 722 at the bottom end of the arc block 721 is clamped on the upper side of the steel wire. In this way, after the variable diameter spring is processed, when it is cut, the steel wire is elastically pressed from above by the arc block 721, and the steel wire will not reset instantly. If the elasticity of the steel wire reset is greater than the elastic pressing force of the arc block 721, then the steel wire after cutting will force the limiting cover 72 to move upward, and the steel wire will gradually move from Fig.12The arc-shaped notch 722 on the left side of the middle moves toward between the two arc-shaped blocks 721, and then separates from the limit cover 72 from the arc-shaped notch 722 on the right side. At this time, the limit cover 72 has a reset buffering effect on the steel wire, and the steel wire moves toward Figure 1 The restoring force in the direction of the middle upper reducing rod 51 is greatly weakened, and the ability of the steel wire to shake is reduced. The elastic buffer design can avoid the separation between the steel wire and the reducing rod 51 after cutting, thereby improving the efficiency of reducing spring processing.

[0049] In the related art, although the variable diameter spring processing device can increase the coverage of the pressure head 65 on the steel wire used to produce the variable diameter spring by the displacement of the slide 61 on the mounting frame 1, once the coverage of the pressure head 65 is smaller than the width of the steel wire, the normal cutting action cannot be achieved.

[0050] Embodiment 3, according to some embodiments of the present application, such as Figure 13-Figure 15 As shown, the second lifting block 642 and the first lifting block 641 are detachably connected (specifically, they can be connected by bolts), and a quick release mechanism 8 is arranged in the second lifting block 642. The quick release mechanism 8 includes a limit plate 81 which is displaced along the radial direction of the cutter head 11. A positioning rod 82 is fixedly connected to the limit plate 81, and a second spring 83 is sleeved on the positioning rod 82.

[0051] Among them, a through groove 645 is set at the bottom end of the second lifting block 642, and an installation cavity 646 is set in the second lifting block 642. The installation cavity 646 is connected with the through groove 645, and a limiting block 647 is set in the installation cavity 646; the second lifting block 642 is also provided with a deformation cavity 648 connected with the installation cavity 646, and a through groove 649 connected with the deformation cavity 648, and the diameter of the deformation cavity 648 is larger than the diameter of the through groove 649.

[0052] Specifically, the mounting rod 651 slides in the through slot 645 , and one end of the mounting rod 651 extends to the mounting cavity 646 and abuts against the limiting block 647 , thereby achieving axial limiting of the mounting rod 651 .

[0053] Furthermore, the limiting plate 81 is disposed in the installation cavity 646 and slidably cooperates with the limiting block 647, one end of the positioning rod 82 is slidably inserted into the through slot 649, and one end of the second spring 83 extends into the deformation cavity 648, as shown in FIG. Fig.14 As shown, when the limiting plate 81 moves upward to make room for the installation rod 651 to move, the second spring 83 is compressed into the deformation cavity 648 .

[0054] Therefore, during specific use, when the used pressure head 65 cannot achieve full coverage of the steel wire, the second lifting block 642 is removed from the first lifting block 641, and then the limit plate 81 is moved upward to squeeze the second spring 83. At this time, there is nothing else in the installation cavity 646 to limit the installation rod 651, so the entire pressure head 65 is directly moved out along the length direction of the through groove 645, and then a suitable pressure head 65 is replaced, and then moved into the installation cavity 646 through the through groove 645, and the top end of the installation rod 651 is moved to the bottom side of the limit block 647 to achieve the radial positioning of the pressure head 65 relative to the cutter head 11, and then the limit plate 81 is released. Under the resetting action of the second spring 83, the limit plate 81 is moved to the bottom side of the installation cavity 646, and the installation rod 651 is limited along the length direction of the through groove 645, and finally the second lifting block 642 is fixed back to the first lifting block 641, so that the pressure head 65 can be quickly replaced, thereby improving the scope of application of the entire device.

[0055] It should be noted that the specific models and specifications of the driving mechanism 2, the straightening mechanism 3, the linear displacement assembly 41, the driving motor 42, the active gear 421, the passive rack 441, the first telescopic member 52, the second telescopic member 55, the third telescopic member 56, the fourth telescopic member 62, the fifth telescopic member 67, the sixth telescopic member 68, the first spring 713 and the second spring 83 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.

[0056] 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 variable diameter spring processing device, comprising a mounting frame (1), on which a cutter head (11), a driving mechanism (2), a straightening mechanism (3), a pitch changing mechanism (4), a variable diameter mechanism (5) and a cutting mechanism (6) are arranged, characterized in that: The pitch changing mechanism (4) performs a displacement action of approaching and moving away from the mounting frame (1); The diameter-changing mechanism (5) performs a displacement action of approaching and moving away from the mounting frame (1), and the diameter-changing mechanism (5) realizes an angle change on the mounting frame (1); The cutting mechanism (6) comprises a sliding seat (61), a fixed seat (63), a lifting assembly (64), a pressure head (65) and a clamping block (66); the sliding seat (61) is axially displaced along the cutter head (11); the fixed seat (63) is fixedly connected to the sliding seat (61); the lifting assembly (64) and the fixed seat (63) are slidably matched; the lifting assembly (64) is radially displaced along the cutter head (11); the pressure head (65) is fixedly connected to the lifting assembly (64); the clamping block (66) and the lifting assembly (64) are slidably matched; and the clamping block (66) is radially displaced along the cutter head (11); A side of the clamping block (66) away from the pressure head (65) is provided with an inclined portion (662), and a side of the clamping block (66) facing the pressure head (65) is provided with an inclined block (663), and the inclined block (663) and the inclined portion (662) make the end of the clamping block (66) facing the cutter head (11) pointed.

2. A variable diameter spring processing device as claimed in claim 1, characterized in that: The pitch changing mechanism (4) comprises: A linear displacement component (41), the linear displacement component (41) being fixedly connected to the mounting frame (1); A driving motor (42), the driving motor (42) being fixedly connected to a displacement end of the linear displacement component (41); A base (43), the base (43) being slidably connected to the mounting frame (1), an output shaft of the driving motor (42) passing through the base (43) and being key-connected to a driving gear (421), the driving gear (421) being rotatably connected to the base (43); A pitch adjustment block (44) is radially slidably embedded in the base (43) along the cutter head (11), and a passive rack (441) is provided on one side of the pitch adjustment block (44), and the passive rack (441) is meshed with the active gear (421).

3. A variable diameter spring processing device as claimed in claim 1, characterized in that: The diameter-changing mechanisms (5) are symmetrically arranged with two of them. The structures and sizes of the two diameter-changing mechanisms (5) are the same. The diameter-changing mechanisms (5) comprise a diameter-changing rod (51), a first telescopic member (52), a mounting block (53), a connecting seat (54), a second telescopic member (55) and a third telescopic member (56). The diameter-changing rod (51) is coaxially fixed to the piston end of the first telescopic member (52). The first telescopic member (52) is fixed to the mounting block (53) for controlling the radial displacement of the diameter-changing rod (51) along the cutter head (11). The mounting frame (1) is provided with an arc The arc-shaped groove (12) is formed on the connecting seat (54), the connecting seat (54) passes through the arc-shaped groove (12), the mounting block (53) is slidably sleeved on the connecting seat (54), the second telescopic member (55) is rotatably connected to the mounting frame (1) and is fixedly connected to the connecting seat (54), the second telescopic member (55) is used to control the displacement of the connecting seat (54) along the arc-shaped groove (12), the third telescopic member (56) is fixedly connected to the connecting seat (54), and the piston end of the third telescopic member (56) slidably passes through the connecting seat (54) and is fixedly connected to the mounting block (53).

4. A variable diameter spring processing device as claimed in claim 1, characterized in that: A fourth telescopic member (62) is fixedly connected to the slide seat (61), and the fourth telescopic member (62) is used to drive the lifting assembly (64) to move radially along the cutter head (11).

5. A variable diameter spring processing device as claimed in claim 1, characterized in that: A slide groove (631) is arranged in the fixing seat (63), and the lifting assembly (64) slides in the slide groove (631). The lifting assembly (64) comprises a first lifting block (641) and a second lifting block (642), and the second lifting block (642) extends out of the slide groove (631). A communicating slide cavity (643) is arranged on the same side of the first lifting block (641) and the second lifting block (642), and positioning grooves (644) are symmetrically arranged in the slide cavity (643) on the first lifting block (641).

6. A variable diameter spring processing device as claimed in claim 5, characterized in that: The pressure head (65) is arranged in an L shape, and one end of the pressure head (65) is fixedly connected to a mounting rod (651).

7. A variable diameter spring processing device as claimed in claim 5, characterized in that: One end of the clamping block (66) away from the inclined portion (662) and the inclined block (663) is symmetrically fixed with two positioning bars (661), and the positioning bars (661) and the positioning grooves (644) are slidably matched.

8. A variable diameter spring processing device as claimed in claim 1, characterized in that: The vertical shadow of the pressure head (65) covers the inclined block (663).

9. A variable diameter spring processing device as claimed in claim 1, characterized in that: A fifth telescopic member (67) is fixedly connected to the fixing seat (63), and the fifth telescopic member (67) is used to drive the clamping block (66) to move radially along the cutter head (11).

10. A variable diameter spring processing device as claimed in claim 1, characterized in that: A sixth telescopic member (68) is fixedly connected to the mounting frame (1), and the sixth telescopic member (68) is used to drive the slide seat (61) to move axially along the cutter head (11) on the mounting frame (1).

Images