Spring tail crimping machine

Abstract

The application discloses a spring tail end crimping forming machine, which comprises a rack, a spring positioning device installed on the rack, spring shaping devices arranged on both sides or one side of the spring positioning device, a spring locking device arranged below the spring positioning device, and a spring crimping device corresponding to the end of the spring positioning device; the spring positioning device is used for moving the spring to a predetermined height, the spring locking device arranged below the spring positioning device is used for locking and fixing the spring, the die head of the spring shaping device is used for moving to the inner ring of the spring and forming a supporting action on the inner ring of the spring, the spring tail end is clamped by the spring crimping device to perform tail end crimping, and a finished product spring is formed, so that the problems caused by manual or semi-manual operation are solved, the problems of poor consistency of crimped shapes, large shape and position tolerance deviation and the like existing in the prior art are solved, the design and development of automation are met, the efficiency is improved, and dangerous operations such as contact with hot springs caused by manual operation are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spring manufacturing, in particular to a spring tail crimping forming machine. BACKGROUND

[0002] Hot coil spring is also known as large spring, because the diameter of the spring is usually large, and the diameter of some hot coil springs reaches 20 cm. In the production process, hot coil technology is adopted. Before the tail of the spring is hot-coiled to form the final spring shape, the hot coil spring needs to be manually clamped and transported. Not only does it need to be positioned and locked (fixed), but it also needs to ensure that the spring does not deform and is stable during the tail clamping and crimping process, as well as tail crimping and other operations. The existing operation is manually or semi-manually operated, the consistency of the crimped shape is poor, the shape and position tolerance deviates greatly, the spring is fixed and locked manually, and after crimping, it is put into the oil quenching pool by manual operation. Such operation is not only rough and imprecise, but also cannot meet the automatic control of spring height / relative height, and is not suitable for automatic design and development, and is also inefficient. Moreover, the worker needs to contact the hot steel wire, the working environment is poor, and if the operation is not proper, it is also easy to cause danger. Therefore, a way or method is needed to automatically support and position the hot coil spring in the automatic process. SUMMARY

[0003] Therefore, it is necessary to overcome at least one of the above-mentioned defects in the prior art. The present application provides a spring tail crimping forming machine, which comprises a frame, a spring positioning device mounted on the frame, a spring shaping device mounted on the frame and arranged on both sides or one side of the spring positioning device, a spring locking device mounted on the frame and arranged below the spring positioning device, and a spring crimping device corresponding to the end of the spring positioning device.

[0004] The spring positioning device comprises two openable and closable supporting rods for placing the spring, and a servo lifting mechanism for moving the supporting rods up and down.

[0005] The spring shaping device comprises a mold head capable of moving and inserted into the inner wall of the spring to support the spring, and a shaping driving mechanism connected with the mold head and driving the mold head to move, and the mold head is arranged on both sides or one side of the supporting rod.

[0006] The spring locking device comprises a clamping jaw mechanism for clamping the spring wire according to the bending direction of the spring wire, the clamping jaw mechanism comprises an opening and closing rotary clamping jaw for clamping the spring wire according to the bending direction of the spring wire, a clamping jaw opening and closing cylinder below the clamping jaw mechanism for opening and closing the opening and closing rotary clamping jaw through the scissor opening and closing structure below the clamping jaw mechanism, and the side of the clamping jaw mechanism is connected with the clamping jaw rotating mechanism through the meshing structure.

[0007] The spring coiling device includes a three-dimensional motion coiling spindle mechanism; wherein the coiling spindle mechanism includes a coiling spindle motor, the coiling spindle motor is installed at the rear end of a coupling sleeve with a hollow cavity, the output end of the coiling spindle motor extending inside the coupling sleeve is connected to the rear end of the coiling spindle via a coupling, the coiling spindle is disposed inside a spindle sleeve connected to the front end of the coupling sleeve, and the rear end of the coiling spindle passes through a first bearing and is connected to the output end of the spindle motor via the coupling. A spring collet assembly is installed at the front end of the shaft. A push rod for pushing the collet mounted on the spring collet assembly is installed in the hollow cavity of the winding spindle. A push rod cylinder is installed above the coupling sleeve. The output end of the push rod cylinder is connected to the upper end of the collet push plate through a rotating shaft. The collet push plate is a double-layer hollow annular structure with the spindle sleeve in the middle. The double-layer hollow annular structure is in rolling cooperation with the push rod through an extension rod. The lower side of the collet push plate is connected to the push plate rotating shaft mounted on the spindle sleeve.

[0008] According to the prior art described in the background of this patent, existing technologies still require manual or semi-manual operation for various tasks, resulting in arbitrary, rough, and inaccurate operations, low efficiency, and difficulty in automation. Furthermore, the need for personnel to contact heated steel wire creates a harsh working environment, and improper operation can easily lead to danger. In contrast, the spring tail-curling forming machine disclosed in this invention first moves the spring to a predetermined height via a spring positioning device, then locks and fixes the spring using a spring locking device located below the spring positioning device. The mold head of the spring shaping device moves to the inner coil of the spring, thus providing support and ensuring stability and no deformation during the spring tail-curling process. Finally, the spring tail is clamped by the spring curling device to form the final finished spring. The mold head in the spring shaping device contacts the inner coil of the spring.

[0009] The part is a contour-following structure, which solves a series of problems caused by manual or semi-manual operation. It also solves the problems of poor consistency of the curled shape and large deviation of shape and position tolerance in the existing technology, meets the design and development of automation, improves efficiency, and avoids dangerous operations such as contact with hot springs caused by manual operation.

[0010] In addition, the spring tail coiling forming machine disclosed in this invention also has the following additional technical features:

[0011] Further, the spring positioning device comprises a positioning device base plate, a positioning device lifting mechanism installed on the positioning device base plate and moving up and down along the Z axis, a supporting rod synchronous mechanism comprising the supporting rod and installed on the positioning device lifting mechanism, wherein the positioning device lifting mechanism comprises a positioning device motor installed on the positioning device base plate, and a positioning device lifting assembly moving up and down along the Z axis connected with the output of the positioning device motor; the supporting rod synchronous mechanism installed on the positioning device lifting assembly comprises the supporting rod for supporting the spring.

[0012] Further, the supporting rod synchronous mechanism further comprises a supporting rod opening and closing device, the supporting rod is two supporting rods matched with each other, one end of the supporting rod is connected with the supporting rod opening and closing device installed on the positioning device lifting assembly; the supporting rod opening and closing device comprises a supporting rod opening and closing cylinder and a supporting rod opening and closing synchronous component installed on the positioning device lifting assembly, the supporting rod opening and closing synchronous component comprises two opening and closing components meshing with each other and moving opening and closing with each other, the opening and closing components are installed on the positioning device lifting mechanism through a rotating component, the tail of one of the opening and closing components is connected with the output end of the supporting rod opening and closing cylinder, and the head of the opening and closing component is connected with the supporting rod.

[0013] Wherein, one of the opening and closing components can comprise a connecting rod integrally connected with the opening and closing cylinder or separately connected with the opening and closing cylinder, the two opening and closing components are meshed with each other through a gear, and the opening and closing components and the supporting rod are fixedly connected through a connecting component, so that when the opening and closing cylinder drives the connecting rod to move, the connecting rod drives one of the opening and closing components to rotate, thereby driving the other opening and closing component to rotate, and the supporting rod connected with the two opening and closing components at one end follows the opening and closing components to perform the opening and closing action, thereby realizing the opening degree of the supporting rod.

[0014] Further, the supporting rod opening and closing device further comprises a limiting device for limiting the opening and closing components, when different spring specifications are used, the limiting device or component of the opening and closing cylinder can be adjusted to realize the opening and closing degree of the supporting rod for different specifications of springs.

[0015] Further, the positioning device lifting mechanism comprises a sliding rail installed on the positioning device base plate and a sliding block provided on the sliding rail, and the lifting component is installed on the sliding block.

[0016] Preferably, the sliding rail is two, and the sliding block is two matched with the sliding rail.

[0017] When the spring is placed on the supporting rod, the lower positioning device motor pushes the whole supporting rod synchronous mechanism including the supporting rod and the spring upward, the opening and closing cylinder rotates by itself through the opening and closing part connected with the opening and closing cylinder, drives the opening and closing of the two supporting rods, thereby adjusts the center position of the spring placed on the supporting rod, one method is to determine the opening and closing degree of the supporting rod according to the size of the outer diameter of the spring, and then adjust the up and down position of the positioning device lifting mechanism, so as to realize the adjustment of the center position of the spring, generally speaking, in the spring production process, the same specification spring will be mass produced at the same time, so the opening and closing degree of the supporting rod can be adjusted in advance, and the lifting mechanism of the positioning device is adjusted to achieve the appropriate center position of the spring, at the same time, the spring positioning device can also adjust the plane position through the horizontal movement mechanism, so as to realize the position change more flexibly, such as X axis direction movement, or X axis Y axis adjustment at the same time.

[0018] Further, the spring shaping device comprises a shaping device base plate, a shaping device X axis movement mechanism installed on the shaping device base plate, the shaping device X axis movement mechanism comprises a shaping device X axis sliding mechanism, a horizontal fine adjustment cylinder group is installed on the shaping device X axis sliding mechanism, the horizontal fine adjustment cylinder group comprises a plurality of horizontal fine adjustment cylinders, the output end of the horizontal fine adjustment cylinder is connected with a spring center shaft shaping and positioning mechanism, the rotating shaping and positioning mechanism comprises a mold head for shaping and positioning the spring center shaft, the mold head is connected with a shaping device driving mechanism for moving the mold head to the spring center shaft for shaping and positioning.

[0019] Further, the shaping device driving mechanism is a pushing cylinder for pushing the mold head to the spring center shaft shaping and positioning position, the pushing cylinder and the mold head are installed on a sliding assembly arranged on the shaping device X axis sliding mechanism, and the output end of the horizontal fine adjustment cylinder is connected with the sliding assembly; the shaping device driving mechanism is a pushing cylinder installed on a sliding part in the sliding assembly arranged on the shaping device X axis sliding mechanism, the pushing cylinder is connected with one end of a rotating plate installed on the sliding part, the other end of the rotating plate is connected with the mold head, and the rotating plate is connected with a rotating part on the sliding part through the connection of the middle part of the rotating plate.

[0020] Further, the rotating plate comprises a first rotating plate, the first rotating plate and the rotating part are rotationally connected, one end of the first rotating plate is connected with the pushing cylinder, and the other end of the first rotating plate is connected with the mold head through a connecting mechanism; the first rotating plate is in an L-shaped structure, the initial end of the L-shaped structure is connected with the pushing cylinder, the tail end of the L-shaped structure is connected with the mold head, the tail end has a mounting mechanism for directly or indirectly mounting the mold head, and the middle segment of the L-shaped structure is rotationally connected with the rotating part.

[0021] Further, the mold head is a flat structure, and the outer edge of the flat structure is a profiled structure matched with the inner structure of the spring.

[0022] Further, the spring shaping device comprises one or more mold heads and horizontal fine adjustment cylinders, and the mold heads and the horizontal fine adjustment cylinders are in one-to-one correspondence.

[0023] Further, the X-axis sliding mechanism comprises guide rails arranged on the base plate and an X-axis sliding plate arranged on the guide rails, and an X-axis driving motor, and the horizontal fine adjustment cylinder group and the spring center shaft shaping and positioning mechanism are installed on the X-axis sliding plate.

[0024] Further, the spring center shaft shaping and positioning mechanism is installed on a fine adjustment sliding mechanism arranged on the X-axis sliding plate.

[0025] Further, the shaping and positioning mechanism comprises a limiting mechanism for limiting the mold head to reach the spring center shaft shaping and positioning position.

[0026] When the spring is clamped and placed on the supporting rod and / or fixed, the spring shaping device can automatically control the mold head to be inserted into the inner space of the spring fixed by external force, and the profiled surface of the outer edge of the mold head can be used to support the inner side of the spring. In order to achieve better results, multiple mold heads can be used to support the inner side of the same spring, and the mold head can be detachable, so that the entire device can be applied to springs of different specifications, thereby realizing stable positioning of springs of different specifications, improving the degree of automation, and also improving the production efficiency and safety. During the process of inserting the mold head into the inner side of the spring, the mold head is first pushed by the pushing cylinder from the side of the supporting rod and rotated to the gap between the spring coils, so that the outer edge of the mold head can be attached to the inner wall of the spring coil. Then, the horizontal fine adjustment cylinder pushes the mold head forward or backward to enter the spring inner coil, so that the outer edge of the mold head and the inner wall of the spring coil can be attached and a certain outward supporting force can be provided. In this way, the stability of the spring as a whole can be maintained during the curling process at the tail end of the spring, so that the spring is not easy to deform.

[0027] Further, the spring locking device comprises a locking device movement mechanism for installing the clamping jaw mechanism and moving the clamping jaw mechanism to a predetermined position, the clamping jaw mechanism comprises a clamping jaw opening and closing cylinder for opening and closing the clamping jaw, the opening and closing rotating clamping jaw is a scissors-type clamping jaw, the top end of the opening and closing cylinder has a wedge-shaped guide rod, the wedge-shaped front end of the wedge-shaped guide rod is connected with the opening and closing end of the rear end of the scissors-type clamping jaw, and the front end of the scissors-type clamping jaw has a profiled structure matched with the outer diameter of the spring steel bar.

[0028] The locking device movement mechanism comprises an X-axis walking mechanism installed on the locking device base, and a Y-axis lifting mechanism installed on the X-axis walking mechanism. The locking device movement mechanism can move the opening and closing rotary clamping jaw to the expected position of clamping the spring steel wire, and clamp the spring steel wire. The wedge-shaped structure of the wedge-shaped front end of the wedge-shaped guide rod is connected with the opening and closing end of the rear end of the scissor-type clamping jaw. When the air cylinder is ejected, the wedge-shaped structure goes up, pushes the opening and closing end to open, the front end of the opening and closing rotary clamping jaw closes, clamps and locks the spring steel wire. When the air cylinder is retracted, the wedge-shaped structure goes down, the opening and closing end closes under the action of external force, such as elastic force or the opening and closing end is fixedly connected with the wedge-shaped structure, the front end of the opening and closing rotary clamping jaw opens, and the spring steel wire is released.

[0029] Further, the wedge-shaped guide rod is a conical structure, and the inner wall of the rear end of the scissor-type clamping jaw is a tapered structure matched with the conical structure. The middle segment of the scissor-type clamping jaw is installed in a rotating part.

[0030] Further, the spring locking device comprises a locking device angle adjusting mechanism. The locking device angle adjusting mechanism comprises a driving gear engaged with a clamping jaw gear installed on the opening and closing rotary clamping jaw. The driving gear is connected with an angle adjusting motor. The locking device angle adjusting mechanism is fixedly connected with the clamping jaw mechanism and the clamping cylinder position. The locking device angle adjusting mechanism is fixedly installed on the locking device base. The clamping jaw mechanism is also installed on the locking device base. However, the clamping jaw mechanism can rotate. When the driving gear of the locking device angle adjusting mechanism rotates, the clamping jaw gear drives the clamping jaw mechanism to rotate due to the engagement between the driving gear and the clamping jaw gear. Thus, the angle of the opening and closing rotary clamping jaw is adjusted. The opening and closing rotary clamping jaw can adapt to the rotation angle of the spring steel wire, and the opening and closing rotary clamping jaw can clamp and lock the spring steel wire.

[0031] Further, the clamping head comprises a detachable chuck. The clamping inner wall of the chuck has a profiling structure matched with the outer wall of the spring steel wire. Different chucks can be matched with different types and specifications of springs.

[0032] Preferably, the chuck and the clamping block have a tooth-shaped groove for further reinforcing the locking.

[0033] The chuck is installed on the clamping block. Special tooth-shaped grooves are processed on the installation surface between the chuck and the clamping block to prevent the chuck from loosening during use. The clamping block adopts a scissor-type structure. When the lower part of the clamping block is opened, the chuck part closes. The clamping block is provided with a clamping jaw guide roller. The roller is slidable on the two wedge-shaped surfaces of the guide rod. When the guide rod is pushed up by the air cylinder, the wedge-shaped surface becomes wider. When the lower part of the clamping block is opened, the chuck part closes. When the air cylinder is retracted, the guide rod descends, and the wedge-shaped surface becomes narrower. When the lower part of the clamping block closes, the chuck part opens.

[0034] Furthermore, the spring tail coiling device also includes a coiling device base, and the three-dimensional motion coiling spindle motion mechanism includes an X-axis feed device, a Y-axis feed device mounted on the X-axis feed device, a bracket mounted on the Y-axis feed device, a Z-axis lifting device mounted on the bracket, the X-axis feed device mounted on the coiling device base, the X-axis feed device including an X-axis motor mounted on the coiling device base and an X-axis lead screw mechanism mounted on the coiling device base, and the Y-axis feed device mounted on an X-axis mounting plate on the X-axis feed device;

[0035] The coiling spindle support is mounted on the Z-axis lifting device, and the coiling spindle mechanism is mounted on the coiling spindle support via a spindle mounting plate.

[0036] Furthermore, the extension rod is fixedly mounted on the push rod, and the coiling shaft has an extension rod groove that extends the extension rod and allows the extension rod to slide back and forth. The head of the extension rod is located between the front and rear clamping plates of the chuck push plate.

[0037] or

[0038] The extension rod is fixedly mounted on the chuck push plate. The push rod is fixedly connected to the push rod annular clamp plate located outside the curling shaft by a connecting rod passing through the transverse sliding groove on the curling shaft. The head of the extension rod is located between the front and rear clamp plates of the push rod annular clamp plate.

[0039] The extension rod can be fixedly mounted on the chuck push plate or on the push rod. The corresponding mating mechanism is mounted on the push rod or the chuck push plate. It has a space structure to accommodate the head of the extension rod, such as the space between two front and rear plates. It allows the extension rod to cooperate with the chuck push plate when the push rod rotates with the winding spindle, driving the push rod to move back and forth. The push rod rotates synchronously with the winding spindle. At the same time, the winding spindle wall has a groove structure that allows the extension rod to move back and forth. That is, while the push rod rotates with the winding spindle, the push rod can move back and forth along the central axis of the winding spindle.

[0040] Furthermore, the extension rod head includes a bearing structure, the extension rod is fixedly mounted on the push rod, and the bearing structure is located between the front and rear clamping plates of the chuck push plate;

[0041] or

[0042] The extension rod is fixedly installed on the chuck push plate, and the bearing structure is located between the front and rear clamping plates of the push rod annular clamping plate.

[0043] Further, the head of the push rod is a bearing structure, which makes the contact between the push rod and the pusher plate more smooth, and avoids the phenomenon of poor operation or jamming during the movement of the mechanism.

[0044] Further, the push rod cylinder is installed on a push rod cylinder support seat arranged above the coupling sleeve, the push rod cylinder support seat comprises vertical plates on both sides and a horizontal plate arranged on the vertical plates, and the push rod cylinder is installed on the horizontal plate.

[0045] Further, the spring structure assembly comprises a movable chuck fixing part, the movable chuck fixing part is inserted into the inside of the curling spindle through an insertion slot arranged on the curling spindle, the movable chuck fixing part has a push rod insertion cavity inserted into the head of the push rod, and a push rod fixing pin and a push rod fixing shaft are arranged on the inner wall of the push rod insertion cavity and used for cooperating with a lifting surface of the head of the push rod, one side of the lifting surface is in contact with the push rod fixing pin, and the other side of the lifting surface is in contact with the push rod fixing shaft, the front and back movement of the push rod drives the lifting surface to push the push rod fixing pin and the push rod fixing shaft to drive the whole movable chuck fixing part (including the movable chuck part) to move up and down.

[0046] Further, the head of the push rod is a wedge structure, and the lifting surface is a contact surface arranged on the wedge structure and matched with the push rod fixing pin and the push rod fixing shaft.

[0047] Further, the spindle sleeve and the coupling sleeve are connected through a connecting seat.

[0048] Further, the Y-axis feeding device comprises a Y-axis plate for installing the support, and the support is installed on the Y-axis plate.

[0049] Further, the front end of the spindle sleeve comprising the spindle mounting plate is provided with a second bearing, and the front end of the curling spindle is arranged on the second bearing.

[0050] The spring tail curling device can rotate the curling spindle through a motor, the push rod cylinder is connected with the push rod installed in the inside of the curling spindle through the pusher plate of the chuck, the pusher plate of the chuck drives the push rod to move forward and backward, the movable chuck (part) on the spring chuck assembly installed on the front end of the curling spindle is driven to move up and down, and the movable chuck (part) is clamped together with the chuck protrusion fixedly installed on the head of the curling spindle, so that the spring end is clamped and rotates together with the curling spindle, the push rod and the like, the spring is automatically clamped, rotated and gradually formed into a spiral type, the automation degree is improved, and the production efficiency and safety are improved.

[0051] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. Attached Figure Description

[0052] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0053] Figure 1 This is a structural schematic diagram of an embodiment of the present invention;

[0054] Figure 2 yes Figure 1 A schematic diagram of the spring positioning device in the embodiment;

[0055] Figure 3 yes Figure 2 A front view of the structure in the Chinese embodiment;

[0056] Figure 4 yes Figure 1 A schematic diagram of the spring shaping device in the embodiment;

[0057] Figure 5 yes Figure 4 A schematic diagram of the contact between the inner wall of the spring and the mold head in the middle embodiment;

[0058] Figure 6 yes Figure 1 A schematic diagram of the spring locking device in the embodiment;

[0059] Figure 7 yes Figure 6 A front view of the structure in the embodiment;

[0060] Figure 8 yes Figure 1 A schematic diagram of the spring tail coiling device in the embodiment;

[0061] Figure 9 yes Figure 8 A schematic diagram of the coiling spindle mechanism in the embodiment;

[0062] Figure 10 yes Figure 8 A schematic cross-sectional view of the curling spindle mechanism in the embodiment;

[0063] Figure 11 yes Figure 8 A schematic diagram of the cross-sectional structure of the head of the curling spindle mechanism in the embodiment;

[0064] in,

[0065] Figure 1 In the middle, A is spring, 0 is frame, 01 is frame motor, 1 is spring positioning device, 2 is spring shaping device, 3 is spring locking device, 4 is spring coiling device, 410 is coiling device X-axis motor, 5 is control system / panel;

[0066] Figures 2-3 In the figure, A spring, 10 positioning device base, 12 support rod synchronous device, 121 support rod, 122 support rod opening and closing cylinder, 123 opening and closing component, 13 lifting device, 131 servo motor, 132 limit device, 133 lifting screw, 1A support rod center distance, 1H spring center axis relative height;

[0067] Figures 4-5 In the figure, A spring, 20 shaping device base plate, 21 shaping device X-axis drive motor, 22 shaping device guide rail, 24 / 25 horizontal fine adjustment cylinder group, 24 horizontal fine adjustment cylinder, 25 horizontal fine adjustment cylinder, 26 shaping positioning mechanism, 261 push cylinder, 27 rotating plate, 271 first rotating plate, 272 mold head connecting plate, 28 mold head;

[0068] Figures 6-7 In the figure, A spring, 31 shaping device X-axis walking mechanism, 311 shaping device X-axis motor, 312 shaping device X-axis sliding module, 313 shaping device horizontal and vertical support plate, 32 shaping device Y-axis lifting mechanism, 33 clamping jaw mechanism, 331 clamping jaw opening and closing cylinder, 332 wedge-shaped guide rod, 333 clamping jaw guide wheel, 34 clamping jaw, 341 clamping head, 342 drive gear 343 clamping block, 344 clamping jaw gear, 345 rotating component;

[0069] Figures 8-11 In the figure, 40 base, 41 curling device X-axis feeding device, 410 curling device X-axis motor, 411 curling device X-axis screw structure, 42 curling device Y-axis feeding device, 420 curling device Y-axis motor, 43 curling spindle mechanism, 431 spindle motor, 432 push rod cylinder 4321 push rod cylinder support seat, 433 coupling sleeve, 434 spindle sleeve, 435 curling spindle, 436 push plate shaft, 437 clamping head push plate, 438 second bearing, 439 spindle mounting plate, 430 push rod, 4301 first push rod part, 4302 second push rod part, 43A extension groove, 43B first bearing, 43C rotating shaft, 43D extension rod, 43E spring clamp assembly, 43E1 fixed clamp part, 43E2 movable clamp fastening component, 43E3 movable clamp part, 43E31 clamp protrusion, 43E4 movable clamp fixing part, 43E5 push rod fixed shaft, 43E6 push rod fixed pin, 43F connecting seat, 432 push rod cylinder, 44 curling device Z-axis lifting device, 441 curling spindle support seat, 45 bracket; DETAILED DESCRIPTION

[0070] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be interpreted as a limitation on the present application.

[0071] In the description of the present application, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inner", "outer", "horizontal", "vertical" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0072] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "coupling", "communication", "connection", "connection", "fitting" should be understood broadly, for example, it can be fixedly connected, integrally connected, or detachably connected; it can be the communication inside two elements; it can be directly connected, or indirectly connected through an intermediate medium; "fitting" can be the fitting of a surface to a surface, or the fitting of a point to a surface or a line to a surface, and also includes the fitting of a hole to a shaft, and the specific meaning of the above terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0073] The spring tail crimping forming machine of the present application will be described below with reference to the drawings, wherein Figure 1 is a structural schematic diagram of an embodiment of the present application; Figures 2-11 is Figure 1 is a schematic diagram of a separate device and different angles or details of the corresponding separate device of the embodiment.

[0074] As Figures 1-11 shown, according to the embodiment of the spring tail crimping forming machine of the present application, it comprises a rack, a spring positioning device mounted on the rack, a spring shaping device mounted on the rack and arranged on both sides or one side of the spring positioning device, a spring locking device mounted on the rack and arranged below the spring positioning device, and a spring crimping device corresponding to the end of the spring positioning device;

[0075] The spring positioning device comprises two openable and closable supporting rods for placing springs, and a servo lifting mechanism for moving the supporting rods up and down;

[0076] The spring shaping device comprises a mold head capable of moving and inserted into the inner wall of the spring to support the spring, and a shaping driving mechanism connected with the mold head and driving the mold head to move, and the mold head is arranged on both sides or one side of the supporting rod;

[0077] The spring locking device comprises a clamping jaw mechanism for clamping the spring wire according to the spring wire bending direction, the clamping jaw mechanism comprises an opening and closing rotary jaw for clamping the spring wire according to the spring wire bending direction, a jaw opening and closing cylinder is arranged below the clamping jaw mechanism for opening and closing the opening and closing rotary jaw through a scissor opening and closing structure below the clamping jaw mechanism, and the side of the clamping jaw mechanism is connected through an engaging structure and a locking device angle adjusting mechanism.

[0078] The spring coiling device comprises a three-dimensional motion coiling spindle motion mechanism; wherein the coiling spindle mechanism comprises a coiling spindle motor, the coiling spindle motor is installed at the rear end of a coupling sleeve with a hollow cavity, the output end of the coiling spindle motor extending into the inside of the coupling sleeve is connected with the rear end of the coiling spindle through a coupling, the coiling spindle is arranged inside a spindle sleeve connected with the front end of the coupling sleeve, the rear end of the coiling spindle passes through a first bearing and is connected with the output end of the coiling spindle motor through the coupling and the spindle motor, a spring collet assembly is installed at the front end of the coiling spindle, a push rod for pushing the action of the collet installed on the spring collet assembly is installed in the hollow cavity of the coiling spindle, a push rod cylinder is installed above the coupling sleeve, the output end of the push rod cylinder is connected with the upper end of a collet push plate through a rotating shaft, the collet push plate is a double-layer hollow ring structure passing through the spindle sleeve in the middle, the double-layer hollow ring structure is rolled with the push rod through an extension rod and rolling fit, and the lower side of the collet push plate is connected with a push plate rotating shaft installed on the spindle sleeve.

[0079] The spring tail coiling forming machine disclosed by the application can move the spring to a predetermined height through a spring positioning device, lock and fix the spring through a spring locking device below the spring positioning device, move a die head of the spring shaping device to the inner ring of the spring, thereby forming a supporting action on the inner ring of the spring, ensuring the stability and non-deformation of the spring tail during the coiling process, and finally coiling the tail end of the spring through a spring coiling device to form a final product spring, wherein the part of the die head of the spring shaping device in contact with the inner ring of the spring is a profiling structure.

[0080] In addition, the spring tail coiling forming machine disclosed by the application also has the following additional technical features:

[0081] According to some embodiments of the present application, the spring positioning device comprises a positioning device base plate, a positioning device lifting mechanism installed on the positioning device base plate and moving up and down along the Z axis, a supporting rod synchronization mechanism comprising the supporting rod and installed on the positioning device lifting mechanism, wherein the positioning device lifting mechanism comprises a positioning device motor installed on the positioning device base plate, and a positioning device lifting assembly moving up and down along the Z axis connected with the output of the positioning device motor; the supporting rod synchronization mechanism installed on the positioning device lifting assembly comprises the supporting rod for supporting the spring.

[0082] Further, the supporting rod synchronization mechanism further comprises a supporting rod opening and closing device, the supporting rod is two supporting rods matched with each other, one end of the supporting rod is connected with the supporting rod opening and closing device installed on the positioning device lifting assembly; the supporting rod opening and closing device comprises a supporting rod opening and closing cylinder and a supporting rod opening and closing synchronization component installed on the positioning device lifting assembly, the supporting rod opening and closing synchronization component comprises two opening and closing components meshing with each other and moving up and down, the opening and closing components are installed on the positioning device lifting mechanism through a rotating component, the tail of one of the opening and closing components is connected with the output end of the supporting rod opening and closing cylinder, and the head of the opening and closing component is connected with the supporting rod.

[0083] Wherein, one of the opening and closing components can comprise a connecting rod integrally connected with the opening and closing cylinder or separately connected with the opening and closing cylinder, the two opening and closing components are meshed with each other through a gear, and the opening and closing components and the supporting rod are fixedly connected through a connecting component, so that when the opening and closing cylinder drives the connecting rod to move, the connecting rod drives one of the opening and closing components to rotate, thereby driving the other opening and closing component to rotate, and the supporting rod connected with the two opening and closing components at one end follows the opening and closing components to perform the opening and closing action, thereby realizing the opening degree of the supporting rod.

[0084] According to some embodiments of the present application, the supporting rod opening and closing device further comprises a limiting device for limiting the opening and closing components, and when different spring specifications are used, the limiting device or component of the opening and closing cylinder can be adjusted to realize the opening and closing degree of the supporting rod for different specifications of springs.

[0085] According to some embodiments of the present application, the positioning device lifting mechanism comprises a sliding rail installed on the positioning device base plate and a sliding block provided on the sliding rail, and the lifting component is installed on the sliding block.

[0086] Preferably, the sliding rail is two, and the sliding block is two matched with the sliding rail.

[0087] When the spring is placed on the supporting rod, the motor of the lower positioning device drives the whole supporting rod synchronous mechanism including the supporting rod and the spring to move upward, the opening and closing cylinder rotates by the opening and closing part connected with the opening and closing cylinder, and drives the opening and closing of the two supporting rods, thereby adjusting the center position of the spring placed on the supporting rod.

[0088] According to some embodiments of the present application, the spring shaping device comprises a shaping device base plate, a shaping device X-axis movement mechanism installed on the shaping device base plate, the shaping device X-axis movement mechanism comprises a shaping device X-axis sliding mechanism, a horizontal fine adjustment cylinder group is installed on the shaping device X-axis sliding mechanism, the horizontal fine adjustment cylinder group comprises a plurality of horizontal fine adjustment cylinders, the output end of the horizontal fine adjustment cylinder is connected with a spring center shaft shaping and positioning mechanism, the rotating shaping and positioning mechanism comprises a mold head for shaping and positioning the spring center shaft, and the mold head is connected with a shaping device driving mechanism for moving the mold head to the spring center shaft for shaping and positioning.

[0089] Further, the sliding tracks are two, and the sliding blocks are two matched with the sliding tracks.

[0090] When the spring is placed on the supporting rod, the motor of the lower positioning device drives the whole supporting rod synchronous mechanism including the supporting rod and the spring to move upward, the opening and closing cylinder rotates by the opening and closing part connected with the opening and closing cylinder, and drives the opening and closing of the two supporting rods, thereby adjusting the center position of the spring placed on the supporting rod.

[0091] According to some embodiments of the present application, the spring shaping device comprises a shaping device base plate, a shaping device X-axis movement mechanism installed on the shaping device base plate, the shaping device X-axis movement mechanism comprising a shaping device X-axis sliding mechanism, a horizontal fine adjustment cylinder group installed on the shaping device X-axis sliding mechanism, the horizontal fine adjustment cylinder group comprising a plurality of horizontal fine adjustment cylinders, a spring center axis shaping positioning mechanism connected to the output end of the horizontal fine adjustment cylinder, and a mold head for shaping positioning of the spring center axis, the mold head being connected to a shaping device driving mechanism for moving the mold head to the spring center axis for shaping positioning.

[0092] According to some embodiments of the present application, the shaping device driving mechanism is a pushing cylinder for pushing the mold head to the spring center axis for shaping positioning, the pushing cylinder and the mold head being installed on a sliding assembly arranged on the shaping device X-axis sliding mechanism, the output end of the horizontal fine adjustment cylinder being connected to the sliding assembly; the shaping device driving mechanism is a pushing cylinder installed on a sliding member arranged in the sliding assembly on the shaping device X-axis sliding mechanism, the pushing cylinder being connected to one end of a rotating plate installed on the sliding member, the other end of the rotating plate being connected to the mold head, the rotating plate being connected to a rotating member on the sliding member through the middle part of the rotating plate.

[0093] According to some embodiments of the present application, the rotating plate comprises a first rotating plate, the first rotating plate being connected to the rotating member, one end of the first rotating plate being connected to the pushing cylinder, and the other end of the first rotating plate being connected to the mold head through a connecting mechanism; the first rotating plate has an L-shaped structure, the L-shaped structure having a starting end connected to the pushing cylinder and a terminal end connected to the mold head, the terminal end having a mounting mechanism for directly or indirectly mounting the mold head, and the middle part of the L-shaped structure being rotatably connected to the rotating member.

[0094] According to an embodiment of the present application, the mold head has a flat structure, and the outer edge of the flat structure is a profiled structure matched with the inner structure of the spring.

[0095] According to some embodiments of the present application, the spring shaping device comprises one or more of the mold head and the horizontal fine adjustment cylinder, and the mold head and the horizontal fine adjustment cylinder are in one-to-one correspondence.

[0096] According to some embodiments of the present application, the X-axis sliding mechanism comprises a guide rail arranged on the base plate, an X-axis sliding plate arranged on the guide rail, and an X-axis driving motor, the horizontal fine adjustment cylinder group and the spring center axis shaping positioning mechanism being installed on the X-axis sliding plate.

[0097] According to some embodiments of the present application, the spring center axis shaping positioning mechanism is installed on a fine adjustment sliding mechanism arranged on the X-axis sliding plate.

[0098] According to some embodiments of the present application, the shaping positioning mechanism comprises a limiting mechanism for limiting the precise arrival of the mold head at the spring center axis shaping positioning position.

[0099] When the spring is clamped and placed on the supporting rod and / or fixed, the spring shaping device can insert the mold head into the inside space of the spring fixed by external force through automatic control, and use the profiling surface of the outer edge of the mold head to support the inside of the spring. In order to achieve better results, multiple mold heads can be used to support the inside of the same spring. The use of detachable mold heads enables the entire device to be applicable to springs of different specifications, thereby achieving stable positioning of springs of various specifications, improving the degree of automation, and also improving production efficiency and safety. During the process of inserting the mold head into the inside of the spring, the mold head is first pushed from the side of the supporting rod by a push cylinder and rotated to the gap between the spring coils, forming a state in which the outer edge of the mold head can be attached to the inner coil wall of the spring. Then, the mold head is pushed forward or backward by a horizontal fine adjustment cylinder to enter the inner coil of the spring, so that the outer edge of the mold head and the inner coil wall are attached and a certain outward supporting force is provided. This ensures the stability of the spring as a whole during the curling process at the tail end of the spring, thereby preventing the spring from deforming.

[0100] According to some embodiments of the present application, the spring locking device comprises a locking device movement mechanism for installing the clamping jaw mechanism and moving the clamping jaw mechanism to a predetermined position. The clamping jaw mechanism comprises a clamping jaw opening and closing cylinder for opening and closing the clamping jaw. The opening and closing rotating clamping jaw is a scissors-type clamping jaw. The top end of the opening and closing cylinder has a wedge-shaped guide rod. The wedge-shaped front end of the wedge-shaped guide rod is connected to the opening and closing end of the rear end of the scissors-type clamping jaw. The front end of the scissors-type clamping jaw has a profiling structure matched with the outer diameter of the spring steel bar.

[0101] The locking device movement mechanism comprises an X-axis walking mechanism installed on the locking device base and a Y-axis lifting mechanism installed on the X-axis walking mechanism. The locking device movement mechanism can move the opening and closing rotating clamping jaw to the expected position of clamping the spring steel wire to clamp the spring steel wire. The wedge-shaped structure of the wedge-shaped front end of the wedge-shaped guide rod is connected to the opening and closing end of the rear end of the scissors-type clamping jaw. When the cylinder is ejected, the wedge-shaped structure goes up, pushing the opening and closing end to open, and the front end of the opening and closing rotating clamping jaw closes to clamp the spring steel wire. When the cylinder is retracted, the wedge-shaped structure goes down, and the opening and closing end closes under the action of external force, such as elastic force or the opening and closing end being fixedly connected to the wedge-shaped structure. The front end of the opening and closing rotating clamping jaw opens to release the spring steel wire.

[0102] According to some embodiments of the present application, the wedge-shaped guide rod is a conical structure, and the inner wall of the rear end of the scissor-type clamping jaw is a conical structure matched with the conical structure; the middle section of the scissor-type clamping jaw is installed in a rotating part.

[0103] According to some embodiments of the present application, the spring locking device comprises a locking device angle adjusting mechanism, which comprises a driving gear engaged with a clamping jaw gear installed on the opening and closing rotating clamping jaw, the driving gear is connected with an angle adjusting motor, and the locking device angle adjusting mechanism is fixed relative to the position of the clamping jaw mechanism and the clamping jaw cylinder. The locking device angle adjusting mechanism is fixedly installed on the locking device base, and the clamping jaw mechanism is also installed on the locking device base, but the clamping jaw mechanism can rotate. When the driving gear of the locking device angle adjusting mechanism rotates, the clamping jaw gear drives the clamping jaw mechanism to rotate due to the engagement between the driving gear and the clamping jaw gear, thereby achieving the angle adjustment of the opening and closing rotating clamping jaw, so that the opening and closing rotating clamping jaw can adapt to the rotation angle of the spring wire and realize the rotating clamping and locking of the opening and closing rotating clamping jaw on the spring wire.

[0104] According to some embodiments of the present application, the clamping jaw head comprises a detachable chuck, and the chuck clamping inner wall has a profiling structure matched with the outer wall of the spring wire. Different chucks can be matched with different models and specifications of springs.

[0105] Preferably, the chuck and the clamping block have a tooth-shaped groove for further reinforcing the locking.

[0106] The chuck is installed on the clamping block, and a special tooth-shaped groove is processed on the mounting surface between the chuck and the clamping block to prevent the chuck from loosening during use. The clamping block adopts a scissor-type structure, and when the lower part of the clamping block is opened, the chuck part is closed. The lower surface of the clamping block is provided with a clamping jaw guide roller, and the roller is slidable on the two wedge surfaces of the guide rod. When the guide rod is pushed up by the cylinder, the wedge surface becomes wider. When the lower part of the clamping block is opened, the chuck part is closed. When the cylinder is retracted, the guide rod is lowered, and the wedge surface becomes narrower. When the lower part of the clamping block is closed, the chuck part is opened.

[0107] According to some embodiments of the present application, the spring tail crimping device further comprises a crimping device base, the three-dimensional motion crimping main shaft motion mechanism comprises an X-axis feeding device, a Y-axis feeding device installed on the X-axis feeding device, a bracket installed on the Y-axis feeding device, a Z-axis lifting device installed on the bracket, the X-axis feeding device is installed on the crimping device base, the X-axis feeding device comprises an X-axis motor installed on the crimping device base and an X-axis screw mechanism installed on the crimping device base, and the Y-axis feeding device is installed on an X-axis mounting plate of the X-axis feeding device.

[0108] The curling spindle support seat is installed on the Z-axis lifting device, and the curling spindle mechanism is installed on the curling spindle support seat through a spindle installation plate.

[0109] According to some embodiments of the present application, the extension rod is fixedly installed on the push rod, the curling rotating shaft has an extension rod sliding groove extending from the extension rod and enabling the extension rod to slide forward and backward, and the head of the extension rod is between the front and rear clamping plates of the collet push plate.

[0110] Or

[0111] The extension rod is fixedly installed on the collet push plate, the push rod is fixedly connected with the push rod annular clamping plate outside the curling rotating shaft through a connecting rod penetrating through a transverse sliding groove on the curling rotating shaft, and the head of the extension rod is between the front and rear clamping plates of the push rod annular clamping plate.

[0112] The extension rod can be fixedly installed on the collet push plate or the push rod, and a matching mechanism corresponding to the extension rod is installed on the push rod or the collet push plate, has a space structure for accommodating the head of the extension rod, such as a space between two front and rear plates, and can enable the extension rod to cooperate with the collet push plate when the push rod rotates with the curling spindle, thereby driving the forward and backward movement of the push rod. The push rod rotates synchronously with the curling spindle, and the wall of the curling spindle has a groove structure allowing the forward and backward movement of the extension rod, that is, the push rod can move forward and backward along the central axis of the curling spindle while the push rod rotates with the curling spindle.

[0113] According to some embodiments of the present application, the head of the extension rod comprises a bearing structure, the extension rod is fixedly installed on the push rod, and the bearing structure is between the front and rear clamping plates of the collet push plate.

[0114] Or

[0115] The extension rod is fixedly installed on the collet push plate, and the bearing structure is between the front and rear clamping plates of the push rod annular clamping plate.

[0116] According to some embodiments of the present application, the head of the extension rod is a bearing structure, which enables the extension rod and the collet push plate to contact more smoothly and avoids phenomena such as poor operation or jamming that may occur during the movement of the mechanism.

[0117] According to some embodiments of the present application, the push rod cylinder is installed on a push rod cylinder support seat arranged above the coupling sleeve, the push rod cylinder support seat comprises vertical plates on both sides and a horizontal plate arranged on the vertical plates, and the push rod cylinder is installed on the horizontal plate.

[0118] According to some embodiments of the present application, the spring structure assembly comprises a movable chuck fixing part which is inserted into the inside of the curling spindle through an insertion slot arranged on the curling spindle, the movable chuck fixing part has a push rod insertion cavity into which the push rod head is inserted, and a push rod fixing pin and a push rod fixing shaft are arranged on the inner wall of the push rod insertion cavity, the lifting surface contacts the push rod fixing pin on one side and contacts the push rod fixing shaft on the other side, and the front and back movement of the push rod makes the lifting surface push the push rod fixing pin and the push rod fixing shaft to drive the whole movable chuck fixing part (including the movable chuck part) to move up and down.

[0119] According to some embodiments of the present application, the push rod head is a wedge-shaped structure, and the lifting surface is a contact surface arranged on the wedge-shaped structure and matched with the push rod fixing pin and the push rod fixing shaft.

[0120] According to some embodiments of the present application, the spindle sleeve and the coupling sleeve are coupled through a coupling seat.

[0121] According to some embodiments of the present application, the Y-axis feeding device comprises a Y-axis plate for mounting the bracket, and the bracket is mounted on the Y-axis plate.

[0122] According to some embodiments of the present application, the front end of the spindle sleeve comprising the spindle mounting plate is provided with a second bearing, and the front end of the curling spindle is arranged on the second bearing.

[0123] The spring tail curling device can rotate the curling spindle through a motor, the push rod cylinder is coupled with the push rod arranged in the inside of the curling spindle through the chuck push plate, the chuck push rod drives the push rod to move forward and backward, the movable chuck (part) on the spring chuck assembly arranged on the front end of the curling spindle is pushed to move up and down, and the chuck protrusion fixedly arranged on the head of the curling spindle together clamps the end of the spring and rotates with the curling spindle, the push rod, etc., so that the spring is automatically clamped and rotated and gradually forms a spiral type, thereby improving the degree of automation, and also improving the production efficiency and safety.

[0124] Any reference to "one embodiment", "an embodiment", "certain embodiments", etc., means that a particular element, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily referring to the same embodiment. Further, when a particular element, structure, or characteristic is said to have been added "to" or "of" an existing component, this specification means that the particular element, structure, or characteristic is either added to the existing component, or forms the existing component, depending on the specific context.

[0125] While the specific embodiments of the application have been described in detail, it will be appreciated that various modifications and embodiments, which will be readily apparent to those skilled in the art, can be made in the application without departing from the spirit and scope of the application. Specifically, it is contemplated that reasonable variations and improvements will occur to the person skilled in the art upon the reading and understanding of the foregoing disclosure, the drawings and the claims. Other than the materials and / or configurations of parts specifically recited in the foregoing disclosure, and except for any limitations of scope imposed by the claims, other embodiments of the application will be apparent to those skilled in the art from this detailed description. The scope of the application is accordingly to be limited only by the scope of the appended claims and equivalents thereof.

Claims

1. A spring tail crimping machine characterized by The machine comprises a rack, spring positioning devices installed on the rack, spring shaping devices installed on the rack and arranged on both sides or one side of the spring positioning devices, spring locking devices installed on the rack and arranged below the spring positioning devices, and spring crimping devices corresponding to the end of the spring positioning devices; The spring positioning devices comprise two openable and closable supporting rods for placing springs, and a servo lifting mechanism for moving the supporting rods up and down; The spring shaping devices comprise a mold head capable of moving and inserted into the inner wall of the spring to support the spring, and a shaping driving mechanism connected with the mold head and driving the mold head to move, and the mold head is arranged on both sides or one side of the supporting rods; The spring locking devices comprise a clamping jaw mechanism for clamping the spring wire according to the bending direction of the spring wire, the clamping jaw mechanism comprises an open and close rotary clamping jaw for clamping the spring wire according to the bending direction of the spring wire, and the clamping jaw mechanism comprises a clamping jaw opening and closing cylinder below the clamping jaw mechanism for opening and closing the open and close rotary clamping jaw through the scissors opening and closing structure below the clamping jaw mechanism, and the clamping jaw mechanism is connected with the locking device angle adjusting mechanism through the meshing structure on the side edge of the clamping jaw mechanism; The spring crimping device comprises a three-dimensional motion crimping spindle motion mechanism; wherein the crimping spindle motion mechanism comprises a crimping spindle motor, the crimping spindle motor is installed at the rear end of the coupling sleeve with a hollow cavity, the output end of the crimping spindle motor extending into the inside of the coupling sleeve is connected with the rear end of the crimping spindle through the coupling, the crimping spindle is arranged inside the spindle sleeve connected with the front end of the coupling sleeve, the rear end of the crimping spindle is connected with the output end of the spindle motor through the first bearing through the coupling, the front end of the crimping spindle is provided with a spring collet assembly, a push rod for pushing the collet action installed on the spring collet assembly is installed in the hollow cavity of the crimping spindle, a push rod cylinder is installed above the coupling sleeve, the output end of the push rod cylinder is connected with the upper end of the collet push plate through a rotating shaft, the collet push plate is a double-layer hollow ring structure with the middle part extending through the spindle sleeve, the double-layer hollow ring structure is rolling matched with the push rod through the extending rod, and the lower side of the collet push plate is connected with the push plate rotating shaft installed on the spindle sleeve; Wherein, the extending rod is fixedly installed on the push rod, the crimping spindle has an extending rod sliding groove for the extending rod to slide forward and backward, and the head of the extending rod is between the front and rear clamping plates of the collet push plate; Or The extending rod is fixedly installed on the collet push plate, the push rod is fixedly connected with the push rod ring clamping plate outside the crimping spindle through the connecting rod passing through the transverse sliding groove on the crimping spindle, and the head of the extending rod is between the front and rear clamping plates of the push rod ring clamping plate; The push rod cylinder is arranged on the push rod cylinder support seat above the coupling sleeve, the push rod cylinder support seat comprises vertical plates on both sides and a horizontal plate arranged on the vertical plates, and the push rod cylinder is installed on the horizontal plate. The spring is moved to a predetermined height by a spring positioning device, locked and fixed by a spring locking device below the spring positioning device, moved to the inner ring of the spring by a die head of the spring positioning device, thereby forming a supporting effect on the inner ring of the spring, ensuring stability and no deformation during the curling process of the tail of the spring, and finally performing tail curling by clamping the tail end of the spring by a spring curling device, thereby forming the final product spring, wherein the part of the die head of the spring positioning device in contact with the inner ring of the spring is a profiling structure.

2. A spring tail crimping machine according to claim 1, characterised in that The spring positioning device comprises a positioning device base plate, a positioning device lifting mechanism installed on the positioning device base plate and moving up and down along the Z axis, and a supporting rod synchronous mechanism installed on the positioning device lifting mechanism, wherein the positioning device lifting mechanism comprises a positioning device motor installed on the positioning device base plate, and a positioning device lifting assembly moving up and down along the Z axis connected with the output of the positioning device motor.

3. A spring tail crimping machine according to claim 2, wherein The supporting rod synchronous mechanism comprises a supporting rod opening and closing device, the supporting rod is two rod members cooperating with each other, one end of the supporting rod is connected with the supporting rod opening and closing device installed on the positioning device lifting assembly; the supporting rod opening and closing device comprises a supporting rod opening and closing cylinder and a supporting rod opening and closing synchronous component installed on the positioning device lifting assembly, the supporting rod opening and closing synchronous component comprises two opening and closing components meshing with each other and moving in an opening and closing manner, the opening and closing components are installed on the positioning device lifting mechanism through a first rotating component, the tail of one of the opening and closing components is connected with the output end of the supporting rod opening and closing cylinder, and the head of the opening and closing component is connected with the supporting rod.

4. A spring tail crimping machine according to claim 1, wherein The spring positioning device comprises a positioning device base plate, a positioning device lifting mechanism installed on the positioning device base plate and moving up and down along the Z axis, and a supporting rod synchronous mechanism installed on the positioning device lifting mechanism, wherein the positioning device lifting mechanism comprises a positioning device motor installed on the positioning device base plate, and a positioning device lifting assembly moving up and down along the Z axis connected with the output of the positioning device motor.

5. A spring tail crimping machine according to claim 4, wherein The spring positioning device comprises a positioning device base plate, a positioning device lifting mechanism installed on the positioning device base plate and moving up and down along the Z axis, and a supporting rod synchronous mechanism installed on the positioning device lifting mechanism, wherein the positioning device lifting mechanism comprises a positioning device motor installed on the positioning device base plate, and a positioning device lifting assembly moving up and down along the Z axis connected with the output of the positioning device motor. The driving mechanism is a pushing cylinder provided on the sliding component of the positioning device X-axis sliding mechanism, the pushing cylinder is connected with one end of a rotating plate installed on the sliding component, the other end of the rotating plate is connected with the die head, and the rotating plate is connected through the middle part of itself and a second rotating component on the sliding component.

6. A spring tail crimping machine according to claim 5, wherein The rotating plate comprises a first rotating plate, which is rotationally connected with the second rotating part, one end of the first rotating plate is connected with the pushing cylinder, and the other end is connected with the mold head through a connecting mechanism; the first rotating plate is in L-shaped structure, the initial end of the L-shaped structure is connected with the pushing cylinder, the terminal end is connected with the mold head, the terminal end is provided with a mounting mechanism for directly or indirectly mounting the mold head, and the middle section of the L-shaped structure is rotationally connected with the second rotating part.

7. A spring tail crimping machine according to claim 1, wherein The spring locking device comprises a locking device movement mechanism for mounting the clamping jaw mechanism and moving the clamping jaw mechanism to a predetermined position, the clamping jaw mechanism comprises a clamping jaw opening and closing cylinder for opening and closing the clamping jaw, the opening and closing rotating clamping jaw is a scissor-type clamping jaw, the clamping jaw opening and closing cylinder is provided with a wedge-shaped guide rod at the top end, the wedge-shaped guide rod is connected with the opening and closing end of the rear end of the scissor-type clamping jaw, and the front end of the scissor-type clamping jaw is provided with a profiling structure matched with the outer diameter of the spring steel bar.

8. A spring tail crimping machine according to claim 7, characterised in that, The end of the wedge-shaped guide rod is in conical structure, the inner wall of the rear end of the scissor-type clamping jaw is in conical structure matched with the conical structure; and the middle section of the scissor-type clamping jaw is mounted in the third rotating part.

9. A spring tail crimping machine according to claim 7, wherein The spring locking device comprises a locking device angle adjusting mechanism, the locking device angle adjusting mechanism comprises a driving gear engaged with a clamping jaw gear mounted on the opening and closing rotating clamping jaw, the driving gear is connected with an angle adjusting motor, and the locking device angle adjusting mechanism is fixed relative to the position of the clamping jaw mechanism and the clamping jaw opening and closing cylinder.

10. A spring tail crimping machine according to claim 1, wherein The head of the extending rod comprises a bearing structure, the extending rod is fixedly mounted on the push rod, and the bearing structure is between the front and rear clamping plates of the clamping head push plate. Or The extending rod is fixedly mounted on the clamping head push plate, and the bearing structure is between the front and rear clamping plates of the push rod annular clamping plate.

11. A spring tail crimping machine according to claim 1, wherein The spring clamping head assembly comprises a movable clamping head fixed part, the movable clamping head fixed part is inserted into the curling main shaft through an insertion slot arranged on the curling main shaft, the movable clamping head fixed part is provided with a push rod insertion cavity for inserting the push rod head, and a push rod fixing pin and a push rod fixing shaft for cooperating with a lifting surface of the push rod head are arranged on the inner wall of the push rod insertion cavity.

12. A spring tail crimping machine according to claim 11, characterised in that, The push rod head is in wedge-shaped structure, and the lifting surface is a contact surface arranged on the wedge-shaped structure and matched with the push rod fixing pin and the push rod fixing shaft.

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