Mandrel fixing mechanism and headless spring winding machine

Abstract

This invention discloses a mandrel fixing mechanism and a headless spring winding machine. The mandrel fixing mechanism includes a frame, first and second fixing components. The first fixing component includes a first fixing device, which is movably mounted on the frame. The second fixing component includes a second fixing device, a clamping mounting base, and a clamping drive mechanism mounted on the clamping mounting base. The second fixing device includes a push base of the clamping mounting base and at least two clamping members movably mounted on the push base. The clamping members are provided with abutment portions, and the abutment portions of different clamping members are staggered. The abutment portions between the clamping members combine to form a clamping channel corresponding to the end of the mandrel. A push-fit structure is provided between the clamping members and the push base. The clamping drive mechanism can drive the clamping members and the push base to move relative to each other, so as to control the size of the clamping channel through the push-fit structure. It can be applied to the clamping requirements of mandrels with different outer diameters or mandrels wound with metal wire, and has high versatility.

Description

Technical Field

[0001] The invention relates to the field of heating wire winding equipment, and in particular to a core rod fixing mechanism and a headless spring winding machine. Background Art

[0002] The spiral heating wire winding machine generally includes a wire feeding mechanism and a winding mechanism, wherein the winding mechanism includes a core rod and a core rod fixing mechanism for fixing and driving the core rod to rotate. When the core rod rotates, the wire of the wire feeding mechanism can be pulled to be wound around the outer periphery of the core rod. At the same time, the wire feeding mechanism moves along the length direction of the core rod, so that the wire is wound into a spiral shape. The existing core rod fixing mechanism is generally used to clamp the end of the core rod, and the size of the clamping space matches the core rod. A lead head needs to be set at the end of the wire, and the lead head is fixed to the core rod fixing mechanism so that the wire can be wound around the core rod. The outer circumference of the rod, but for some spring heating wires, the lead head does not need to be configured. Therefore, after the metal wire is wound, the lead head needs to be cut separately, which increases the material and production costs. Although the metal wire can be directly clamped in the core rod fixing mechanism by the clamping mechanism, the clamping space of the traditional clamping mechanism is fixed and the adjustable range is not large. The actual thickness of the metal wire needs to be adjusted according to the different models of the product, so the corresponding clamping spaces are different and the differences are relatively large. The traditional clamping mechanism has low versatility and is difficult to meet the requirements of use. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a mandrel fixing mechanism with good versatility.

[0004] The present invention also provides a headless spring winding machine, which can meet the winding requirements of the headless spring wire.

[0005] According to the first aspect of the present invention, the core rod fixing mechanism comprises: a frame, a first fixing component, and a second fixing component, the first fixing component is arranged on the frame, the first fixing component comprises a first fixing device capable of fixing one end of the core rod, and the first fixing device is movably arranged on the frame; the second fixing component is arranged on the frame, and the second fixing component comprises a second fixing device capable of fixing the other end of the core rod; wherein, the second fixing component also comprises a clamping mounting seat arranged on the frame, a clamping driving mechanism arranged on the clamping mounting seat, the second fixing device comprises a pushing seat movably arranged on the clamping mounting seat and at least two clamping members movably arranged on the pushing seats, the clamping member is provided with at least one abutting portion, and the abutting portions of different clamping members are staggered with each other, the abutting portions between all the clamping members are combined to form a clamping channel corresponding to the end of the core rod, a pushing fitting structure is arranged between the clamping member and the pushing seat, and the clamping driving mechanism can drive the clamping member and the pushing seat to move relative to each other, so as to control the size of the clamping channel through the pushing fitting structure.

[0006] The core rod fixing mechanism according to the embodiment of the present invention has at least the following beneficial effects: it can be adapted to the clamping requirements of core rods with different outer diameters or core rods wound with metal wires, and has high versatility.

[0007] In the present invention, due to the staggered distribution of the abutment parts, the abutment parts are used to abut and position the mandrel in multiple directions. The abutment parts can position the mandrel without matching the shape of the mandrel, and are suitable for clamping mandrels with different outer diameters.

[0008] In some embodiments of the present invention, the clamping member is provided with at least two abutting portions to achieve a better positioning effect.

[0009] In some embodiments of the present invention, the clamping member is provided with at least one concave positioning groove, the bottom of the concave positioning groove forms an abutment portion, and the core rod is positioned by utilizing the concave structure at the bottom of the concave positioning groove, resulting in a better positioning effect.

[0010] In some embodiments of the present invention, the clamping member is provided with at least two concave positioning grooves to achieve a better positioning effect.

[0011] In some embodiments of the present invention, the concave positioning groove is a V-shaped groove, which can form a good match with the cylindrical mandrel or the mandrel wound with a metal wire, thereby achieving a better positioning effect.

[0012] In some embodiments of the present invention, the clamping member is provided with at least two spaced-apart convex portions, and concave positioning grooves are provided at the convex portions, so that each clamping member has at least two concave positioning grooves, and a slot corresponding to the convex portions is provided at the lower portion between adjacent convex portions for the convex portion of another clamping member to be inserted into, forming a match and achieving a better positioning effect.

[0013] In some embodiments of the present invention, the second fixing device includes two clamping members, and the two clamping members are relatively distributed to meet the clamping requirements of the core rod.

[0014] In some embodiments of the present invention, the push-fit structure includes a push bevel provided on the clamping member and an internal pressure bevel provided on the pushing seat and matched with the push bevel, so that when the clamping member and the pushing seat move relative to each other, the clamping member can be pushed to move, thereby controlling the interval between the clamping members.

[0015] In some embodiments of the present invention, a cavity for loading a clamping member is provided in the pushing seat, an inclined groove cooperating with the clamping member is provided on the cavity wall of the cavity, and an internal pressure inclined surface is provided at the inclined groove to realize the pushing function, and the structure is compact, and the pushing seat and the clamping member can be rotated synchronously, thereby conveniently driving the clamped core rod to rotate.

[0016] In some embodiments of the present invention, the clamping drive mechanism includes a clamping drive cylinder and a transmission shaft arranged on a clamping mounting base, one end of the transmission shaft is fixedly connected to the piston rod of the clamping drive cylinder, and one end of the transmission shaft can be movably connected to the clamping member, so that the clamping member can be driven to move by the clamping drive cylinder.

[0017] In some embodiments of the present invention, the clamping drive mechanism also includes a connecting piece, one end of the connecting piece is snap-fitted with the clamping piece, the other end of the connecting piece is provided with a slot, and the end of the transmission shaft is provided with a clamping head that can be snapped into the slot and rotated in the slot, so that the rotation of the clamping piece will not be transmitted to the clamping drive cylinder, thereby maintaining the normal driving performance of the clamping drive cylinder.

[0018] In some embodiments of the present invention, a thrust bearing is provided between the clamping head and the connecting member to improve the degree of rotational flow between the clamping head and the connecting member and reduce the influence of the clamping drive mechanism on the rotation of the clamping member.

[0019] In some embodiments of the present invention, a groove corresponding to the clamping head is provided at the end of the connector, a cover plate is detachably provided at the groove, and the cover plate cooperates with the groove to form a clamping slot to facilitate the installation of the clamping head.

[0020] In some embodiments of the present invention, the clamping drive cylinder is arranged on the side of the clamping mounting seat, the piston rod of the clamping drive cylinder is connected to the adapter plate, the adapter plate is connected to the transmission shaft, the structural layout is relatively reasonable, and the output channel of the spring heating wire can be avoided, so that the spring heating wire can be output normally.

[0021] In some embodiments of the present invention, the transmission shaft and the connecting piece are hollow structures to form an output channel connected to the clamping channel, so as to output the wound spring heating wire.

[0022] By setting the output channel, the spring heating wire can be output without disassembling the core rod, which can improve the work efficiency.

[0023] In some embodiments of the present invention, a rotation drive mechanism is also included, which can drive the first fixing device or the second fixing device to rotate, and the first fixing device is connected to the second fixing device through a linkage mechanism, so that the first fixing device and the second fixing device can rotate synchronously, making the winding of the metal wire more uniform.

[0024] In some embodiments of the present invention, the first fixed component and the second fixed component are respectively arranged at two ends of the frame, the linkage mechanism includes a linkage shaft rotatably arranged on the frame, and linkage synchronous pulleys are respectively arranged at both ends of the linkage shaft. The first fixing device and the second fixing device are respectively provided with driven synchronous pulleys connected to the linkage synchronous pulleys. The rotation driving mechanism can drive the linkage shaft to rotate, and the synchronous rotation of the first fixing device and the second fixing device is realized by cooperating with the linkage shaft through the synchronous belt transmission mechanism.

[0025] In some embodiments of the present invention, the second fixing component is provided with an output channel connected to the clamping channel. By providing the output channel, the spring heating wire can be output without removing the core rod, thereby improving work efficiency.

[0026] In some embodiments of the present invention, the clamping mount is provided with a cutting device corresponding to the output channel to cut off the spring heating wire output through the output channel.

[0027] In some embodiments of the present invention, the cutting device includes a cutting cylinder arranged on a clamping mount and a cutter connected to the cutting cylinder. The cutting cylinder drives the cutter to cross-cut through the output channel to cut the spring heating wire.

[0028] In some embodiments of the present invention, the clamping mount is provided with an output nozzle connected to the output channel, and the cutter is arranged at the output nozzle. The output nozzle can position the output spring heating wire to improve the cutting accuracy and the flatness of the incision.

[0029] In some embodiments of the present invention, the second fixing device is rotatably disposed in the clamping mounting seat via at least one bearing to improve the smoothness of the rotation of the second fixing device.

[0030] In some embodiments of the present invention, the first fixing assembly includes a swivel seat arranged on the frame, and the first fixing device is a clamping mechanism capable of clamping the end of the core rod, and the clamping mechanism is rotatably arranged on the swivel seat to achieve the fixation and rotation of the core rod.

[0031] In some embodiments of the present invention, a core rod auxiliary support mechanism is also included. The core rod auxiliary support mechanism is arranged between the first fixing component and the second fixing component, and can support the middle section of the core rod to reduce the deformation of the core rod and improve the quality of the heating wire winding.

[0032] In some embodiments of the present invention, the mandrel auxiliary support mechanism includes a support base arranged on a frame, a finger cylinder arranged on the support base, and two clamping hands arranged on the finger cylinder, and the mandrel can be supported by the clamping hands.

[0033] According to the second aspect of the present invention, a headless spring winding machine comprises a wire feeding mechanism and a core rod fixing mechanism according to any one of the first aspect of the present invention, and the wire feeding mechanism is arranged on a frame.

[0034] The headless spring winding machine according to the embodiment of the present invention has at least the following beneficial effects: it can realize the winding of spring heating wire, can meet the winding requirements of headless springs, and can meet the winding requirements of spring heating wires of various specifications, and has high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 It is a structural schematic diagram of a headless spring winding machine according to an embodiment of the present invention;

[0037] Figure 2 It is a structural schematic diagram of a mandrel fixing mechanism and a wire feeding mechanism according to an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the structure of a linkage mechanism according to an embodiment of the present invention;

[0039] Figure 4 is a schematic structural diagram of a second fixing assembly according to an embodiment of the present invention;

[0040] Figure 5 is an exploded schematic diagram of a second fixing assembly according to an embodiment of the present invention;

[0041] Figure 6 is a cross-sectional schematic diagram of a second fixing assembly according to an embodiment of the present invention;

[0042] Figure 7 is an exploded schematic diagram of a second fixing device according to an embodiment of the present invention;

[0043] Figure 8 It is a schematic structural diagram of a clamping member according to an embodiment of the present invention;

[0044] Fig. 9 is a schematic structural diagram of a first fixing assembly according to an embodiment of the present invention;

[0045] Fig.10 It is a structural schematic diagram of the mandrel auxiliary support mechanism according to an embodiment of the present invention.

[0046] Reference numerals:

[0047] A first fixing assembly 100, a rotating seat 120, and a clamping mechanism 130;

[0048] The second fixing assembly 200, the output channel 201, the second fixing device 210, the pushing seat 211, the clamping member 212, the guide portion 212a, the concave positioning groove 213, the outer protrusion 214, the slot 215, the pushing inclined surface 216, the inner pressure inclined surface 217, the bearing 218, the oblique slide groove 219, the clamping mounting seat 220, the clamping drive mechanism 230, the clamping drive cylinder 231, the transmission shaft 232, the connecting member 233, the clamping groove 234, the clamping head 235, the thrust bearing 236, the adapter plate 237, the cover plate 238, the cutting device 240, the cutting cylinder 241, the cutter 242, and the output nozzle 243;

[0049] Rotation drive mechanism 300, linkage shaft 310, linkage synchronous pulley 320, driven synchronous pulley 330;

[0050] Mandrel auxiliary support mechanism 400, support seat 410, finger cylinder 420, clamping hand 430;

[0051] Wire feeding mechanism 500;

[0052] Frame 900 and mandrel 910 . DETAILED DESCRIPTION

[0053] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0054] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0056] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0057] like Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the mandrel fixing mechanism according to the embodiment of the present invention includes: a frame 900, a first fixing assembly 100, and a second fixing assembly 200. The first fixing assembly 100 is arranged on the frame 900, and the first fixing assembly 100 includes a first fixing device capable of fixing one end of a mandrel 910, and the first fixing device is movably arranged on the frame 900; the second fixing assembly 200 is arranged on the frame 900, and the second fixing assembly 200 includes a second fixing device 210 capable of fixing the other end of the mandrel 910; wherein the second fixing assembly 200 also includes a clamping mounting seat 220 mounted on the frame 900, and a The clamping drive mechanism 230 and the second fixing device 210 include a pushing seat 211 movably arranged on the clamping mounting seat 220 and at least two clamping members 212 movably arranged on the pushing seat 211. The clamping member 212 is provided with at least one abutting portion, and the abutting portions of different clamping members 212 are staggered with each other. The abutting portions between all the clamping members 212 are combined to form a clamping channel corresponding to the end of the core rod 910. A pushing fitting structure is provided between the clamping member 212 and the pushing seat 211. The clamping drive mechanism 230 can drive the clamping member 212 and the pushing seat 211 to move relative to each other so as to control the size of the clamping channel through the pushing fitting structure.

[0058] During operation, the pushing-fitting structure pushes the clamping part 212, causing the clamping parts 212 to move closer to each other, and the core rod 910 or the core rod 910 wound with a metal wire is limited and clamped from multiple directions by at least two offset abutment parts, so that the second fixing device 210 can be suitable for the clamping requirements of core rods 910 or core rods 910 wound with metal wires with different outer diameters, and has high versatility.

[0059] In the present invention, due to the staggered distribution of the abutment parts, the abutment parts are used to perform multi-directional abutment positioning on the mandrel 910. The abutment parts can complete the positioning of the mandrel 910 without matching the shape setting of the mandrel 910, and can be suitable for clamping mandrels with different outer diameters.

[0060] Specifically, one end of the mandrel 910 is fixed to the first fixing device, and the other end of the mandrel 910 (which may be wound with a metal wire) is clamped and fixed by the second fixing device 210, thereby fixing the mandrel 910, wherein the first fixing device may be a traditional clamping mechanism, or may adopt a clamping structure similar to the second fixing device 210.

[0061] In some embodiments of the present invention, the clamping member 212 is provided with at least two abutting portions to achieve a better positioning effect.

[0062] like Figure 7 , Figure 8As shown, in some embodiments of the present invention, the clamping member 212 is provided with at least one concave positioning groove 213, and the bottom of the concave positioning groove 213 forms an abutment portion. The core rod 910 is positioned by utilizing the concave structure at the bottom of the concave positioning groove 213, and the positioning effect is better.

[0063] Specifically, the bottom of the concave positioning groove 213 is a V-shaped or curved structure, which can limit the core rod in multiple directions to achieve a better positioning effect.

[0064] It is conceivable that, in some embodiments of the present invention, the abutting portion may also be a planar structure, which may also meet the positioning requirements through multi-directional and staggered distribution.

[0065] In some embodiments of the present invention, the clamping member 212 is provided with at least two concave positioning grooves 213 to achieve a better positioning effect.

[0066] like Figure 8 As shown, in some embodiments of the present invention, the concave positioning groove 213 is a V-shaped groove, which can form a good match with the cylindrical core rod or the core rod 910 wound with a metal wire to achieve a better positioning effect.

[0067] Specifically, the two side walls of the V-shaped groove can contact the outer circumference of the cylindrical structural member, thereby limiting the position of the cylindrical structural member in two directions.

[0068] It is conceivable that in some embodiments of the present invention, the concave positioning groove 213 may also be an inverted trapezoidal groove, a curved groove, etc., which will not be described in detail herein.

[0069] like Figure 8 As shown, in some embodiments of the present invention, the clamping member 212 is provided with at least two spaced-apart outer protrusions 214, and the concave positioning grooves 213 are provided at the outer protrusions 214, so that each clamping member 212 has at least two concave positioning grooves 213, and the lower part between adjacent outer protrusions 214 is provided with a slot 215 corresponding to the outer protrusion 214 for the outer protrusion 214 of another clamping member 212 to be inserted into, so as to form a match and achieve a better positioning effect.

[0070] Specifically, a plurality of protrusions 214 and a plurality of slots 215 are arrayed on the clamping member 212. The protrusions 214 and the slots 215 are alternately distributed, and the protrusions 214 of different clamping members 212 are staggered with each other, so that the protrusion 214 of a clamping member 212 can be inserted into the slot 215 of another clamping member 212 to form a tight fit and achieve a better clamping effect.

[0071] like Figure 7 As shown, in some embodiments of the present invention, the second fixing device 210 includes two clamping members 212. The two clamping members 212 are relatively distributed to meet the clamping requirements of the core rod.

[0072] It is conceivable that, in a specific implementation process, the clamping members 212 may also be configured into three or more groups, and a plurality of clamping members 212 may be distributed in an annular manner to meet the clamping requirements for the core rod.

[0073] like Figure 6 , Figure 7 As shown, in some embodiments of the present invention, the push-fit structure includes a pushing slope 216 arranged on the clamping member 212 and an internal pressure slope 217 arranged on the pushing seat 211 and matched with the pushing slope 216, so that when the clamping member 212 and the pushing seat 211 move relative to each other, the clamping member 212 can be pushed to move, thereby controlling the interval between the clamping members 212.

[0074] Specifically, by adopting the inclined surface pushing structure, the clamping member 212 can be pushed to move parallel to the radial direction of the core rod 910, so that the multiple abutting parts can move parallel to each other, and the clamping effect on the core rod is better.

[0075] It is conceivable that in some embodiments of the present invention, pushing may not be performed through a continuous inclined surface. For example, a plurality of bull's eye bearings or protrusion structures distributed in an inclined surface array may be provided on the pushing seat 211 to push the pushing inclined surface 216 of the clamping member 212, which may also meet the pushing requirements.

[0076] like Figure 7 As shown, in some embodiments of the present invention, a cavity for loading the clamping member 212 is provided in the pushing seat 211, and an inclined groove 219 cooperating with the clamping member 212 is provided on the cavity wall of the cavity, and the internal pressure inclined surface 217 is provided at the inclined groove 219 to realize the pushing function, and the structure is compact, and the pushing seat 211 and the clamping member 212 can be realized. The synchronous rotation of the pushing seat 211 and the clamping member 212 is realized, which is convenient for driving the clamped core rod to rotate.

[0077] Specifically, the clamping member 212 is provided with a guide portion 212a matching the oblique slide groove 219 and can slide in the oblique slide groove 219, so that the pushing seat 211 and the clamping member 212 can rotate synchronously and maintain a good pushing effect.

[0078] Of course, in the specific implementation process, the internal pressure inclined surface 217 may not be arranged in the inclined sliding groove 219, but may be arranged at other positions of the pushing seat 211, which can also meet the pushing requirements.

[0079] like Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, in some embodiments of the present invention, the clamping drive mechanism 230 includes a clamping drive cylinder 231 and a transmission shaft 232 which are arranged on a clamping mounting base 220, one end of the transmission shaft 232 is fixedly connected to the piston rod of the clamping drive cylinder 231, and one end of the transmission shaft 232 is movably connected to the clamping member 212, so that the clamping member 212 can be driven to move by the clamping drive cylinder 231.

[0080] Specifically, the transmission shaft 232 and the clamping drive cylinder 231 or the clamping member 212 adopt a movable connection structure, so that the transmission shaft 232 and the piston rod or the clamping member 212 can rotate relative to each other to avoid affecting the normal rotation of the clamping member 212.

[0081] It is conceivable that in some embodiments of the present invention, the clamping drive mechanism 230 may also be a screw mechanism driven by an electric cylinder or a motor, etc., which will not be described in detail herein.

[0082] like Figure 6 , Figure 7 As shown, in some embodiments of the present invention, the clamping drive mechanism 230 also includes a connecting member 233, one end of the connecting member 233 is snap-fitted with the clamping member 212, the other end of the connecting member 233 is provided with a slot 234, and the end of the transmission shaft 232 is provided with a clamping head 235 that can be snapped into the slot 234 and can rotate in the slot 234, so that the rotation of the clamping member 212 will not be transmitted to the clamping drive cylinder 231, thereby maintaining the normal driving performance of the clamping drive cylinder 231.

[0083] Specifically, there is a snap-fitting structure between the clamping member 212 and the connecting member 233 to connect the two. The setting of the card slot 234 is mainly used to form a rotational fit with the card head 235, and can move axially synchronously to achieve the function of pushing and pulling the clamping member 212.

[0084] Of course, in the specific implementation process, the card slot can also be directly set to the clamping member 212, and the card mounting head 235 can be matched therewith, which can also meet the driving function.

[0085] like Figure 6 , Figure 7 As shown, in some embodiments of the present invention, a thrust bearing 236 is provided between the clamping head 235 and the connecting member 233 to improve the degree of rotational flow between the clamping head 235 and the connecting member 233 and reduce the influence of the clamping drive mechanism 230 on the rotation of the clamping member 212.

[0086] like Figure 7 As shown, in some embodiments of the present invention, a groove corresponding to the clamping head 235 is provided at the end of the connecting member 233, and a cover plate 238 is detachably provided at the groove. The cover plate 238 cooperates with the groove to form a clamping slot 234 to facilitate the installation of the clamping head 235.

[0087] Specifically, during assembly, the clamping head 235 and the thrust bearing 236 are installed in the groove, and then the cover plate 238 is covered on the opening of the groove by screws, etc. to limit the withdrawal of the clamping head 235, thereby completing the connection between the clamping head 235 and the connecting piece 233.

[0088] like Figure 4 , Figure 5 As shown, in some embodiments of the present invention, the clamping drive cylinder 231 is arranged on the side of the clamping mounting base 220, and the piston rod of the clamping drive cylinder 231 is connected to the adapter plate 237, and the adapter plate 237 is connected to the transmission shaft 232. The structural layout is relatively reasonable and can avoid the output channel of the spring heating wire, so that the spring heating wire can be output normally.

[0089] Specifically, Figure 4 , Figure 5 As shown, there are two clamping drive cylinders 231 and they are distributed on both sides of the clamping mounting seat 220 . Both ends of the adapter plate 237 are respectively connected to the two clamping drive cylinders 231 , and the middle of the adapter plate 237 is connected to the transmission shaft 232 .

[0090] like Figure 6 As shown, in some embodiments of the present invention, the transmission shaft 232 and the connecting member 233 are hollow structures to form an output channel 201 connected to the clamping channel to facilitate output of the wound spring heating wire.

[0091] By providing the output channel 201, the spring heating wire can be output without disassembling the core rod, thereby improving the work efficiency.

[0092] In some embodiments of the present invention, a rotation drive mechanism 300 is further included, which can drive the first fixing device or the second fixing device 210 to rotate, and the first fixing device and the second fixing device 210 are connected by a linkage mechanism, so that the first fixing device and the second fixing device 210 can rotate synchronously, so that the winding of the metal wire is more uniform.

[0093] Of course, in the specific implementation process, the rotation drive mechanism 300 can also be configured as two, and respectively drive the first fixing device and the second fixing device 210 to rotate, and achieve the effect of synchronous driving through the electronic drive control system.

[0094] like Figure 3 , Figure 5 , Figure 6As shown, in some embodiments of the present invention, the first fixed component 100 and the second fixed component 200 are respectively arranged at two ends of the frame 900, and the linkage mechanism includes a linkage shaft 310 rotatably arranged on the frame 900, and linkage synchronous pulleys 320 are respectively arranged at both ends of the linkage shaft 310. The first fixing device and the second fixing device 210 are respectively provided with driven synchronous pulleys 330 connected to the linkage synchronous pulleys 320. The rotation driving mechanism 300 can drive the linkage shaft 310 to rotate, and the synchronous rotation of the first fixing device and the second fixing device 210 is realized by cooperating with the linkage shaft 310 through the synchronous belt transmission mechanism.

[0095] Specifically, the rotation drive mechanism 300 is a motor mechanism, which is connected to the linkage shaft 310 through a synchronous belt mechanism, a chain transmission mechanism, a gear mechanism, etc. The linkage synchronous pulley 320 and the driven synchronous pulley 330 are connected through a synchronous belt, and a belt tensioning mechanism can be configured to maintain good transmission reliability.

[0096] It is conceivable that, in some embodiments of the present invention, the linkage shaft 310 and the first fixing device and the second fixing device 210 may be driven by gears or chains, which may also meet the requirements of synchronous transmission.

[0097] Specifically, the linkage shaft 310 is configured to be relatively long to meet the driving requirements of a relatively long mandrel.

[0098] like Figure 6 As shown, in some embodiments of the present invention, the second fixing component 200 is provided with an output channel 201 connected to the clamping channel. By providing the output channel 201, the spring heating wire can be output without disassembling the core rod, which can improve work efficiency.

[0099] like Figure 4 , Figure 5 As shown, in some embodiments of the present invention, the clamping mount 220 is provided with a cutting device 240 corresponding to the output channel 201 to cut off the spring heating wire output through the output channel 201 .

[0100] Specifically, the headless spring heating wire can be wound by the above-mentioned core rod fixing mechanism. After the clamping channel releases the core rod 910, the wound spring heating wire can be directly sent out from the output channel 201. After reaching the required length, it can be cut by the cutting device 240. At this time, the clamping channel clamps the core rod 910 wound with the spring heating wire again, and the spring heating wire is wound again to achieve continuous operation and improve production efficiency.

[0101] Of course, in the specific implementation process, a longer spring heating wire can also be continuously fed out and then cut off according to actual use needs.

[0102] like Figure 4 , Figure 5 As shown, in some embodiments of the present invention, the cutting device 240 includes a cutting cylinder 241 arranged on the clamping mount 220 and a cutter 242 connected to the cutting cylinder 241. The cutting cylinder 241 drives the cutter 242 to cross the output channel 201 to cut the spring heating wire.

[0103] It is conceivable that, in some embodiments of the present invention, the cutter 242 may also be driven by a rotating mechanism, and the cutter 242 may rotate through the output channel 201 to achieve the cutting function.

[0104] like Figure 4 , Figure 5 As shown, in some embodiments of the present invention, the clamping mount 220 is provided with an output nozzle 243 connected to the output channel 201, and the cutter 242 is arranged at the output nozzle 243. The output nozzle 243 can position the output spring heating wire to improve the cutting accuracy and improve the flatness of the incision.

[0105] like Figure 5 , Figure 6 , Figure 7 As shown, in some embodiments of the present invention, the second fixing device 210 is rotatably disposed in the clamping mounting seat 220 via at least one bearing 218 to improve the smoothness of the rotation of the second fixing device 210 .

[0106] Specifically, the second fixing device 210 includes a front connecting seat and a pushing seat 211, which are respectively connected to the clamping mounting seat 220 through bearings, and the front connecting seat is connected to the pushing seat 211, and a synchronous pulley is provided on the front connecting seat.

[0107] like Fig. 9 As shown, in some embodiments of the present invention, the first fixing assembly 100 includes a swivel seat 120 arranged on the frame 900, and the first fixing device is a clamping mechanism 130 capable of clamping the end of the core rod 910. The clamping mechanism 130 can be rotatably arranged on the swivel seat 120 to achieve the fixation and rotation of the core rod.

[0108] Specifically, the clamping mechanism 130 is a commonly used three-jaw chuck or four-jaw chuck, etc., and the core rod 910 is clamped and fixed by the clamping jaws.

[0109] It is conceivable that the first fixing device may also adopt a structure similar to that of the second fixing device 210 , which will not be described in detail herein.

[0110] like Figure 1 , Figure 2 , Fig.10As shown, in some embodiments of the present invention, a core rod auxiliary support mechanism 400 is also included. The core rod auxiliary support mechanism 400 is arranged between the first fixing component 100 and the second fixing component 200, and can support the middle section of the core rod 910 to reduce the deformation of the core rod 910 and improve the quality of the heating wire winding.

[0111] like Fig.10 As shown, in some embodiments of the present invention, the mandrel auxiliary support mechanism 400 includes a support base 410 arranged on a frame 900, a finger cylinder 420 arranged on the support base 410, and two clamps 430 arranged on the finger cylinder 420, and the mandrel 910 can be supported by the clamps 430.

[0112] Specifically, the mandrel auxiliary support mechanism 400 is equipped with a position sensor. When the wire feeding mechanism 500 moves to the position corresponding to the mandrel auxiliary support mechanism 400, the clamping hand 430 opens to avoid the wire feeding mechanism 500.

[0113] Reference Figure 1 The headless spring winding machine according to the second aspect of the present invention comprises a wire feeding mechanism 500 and a core rod fixing mechanism of any embodiment of the first aspect of the present invention. The wire feeding mechanism 500 is arranged on a frame 900. By cooperating with the core rod fixing mechanism, the wire feeding mechanism 500 can realize the winding of the spring heating wire, meet the winding requirements of the headless spring, and meet the winding requirements of spring heating wires of various specifications, and has high versatility.

[0114] Specifically, the wire feeding mechanism 500 is used to feed out the metal wire. The wire feeding mechanism 500 is driven by a linear driving mechanism such as a screw mechanism or a spur rack mechanism to move along the length direction of the mandrel 910 on the frame 900 to wind the metal wire on the mandrel 910 .

[0115] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A mandrel fixing mechanism, characterized in that: include: Rack(900); A first fixing assembly (100), the first fixing assembly (100) being arranged on the frame (900), the first fixing assembly (100) comprising a first fixing device capable of fixing one end of the mandrel (910), the first fixing device being movably arranged on the frame (900); a second fixing assembly (200), the second fixing assembly (200) being arranged on the frame (900), the second fixing assembly (200) comprising a second fixing device (210) capable of fixing the other end of the mandrel (910); The second fixing assembly (200) further comprises a clamping mounting seat (220) mounted on the frame (900), a clamping driving mechanism (230) arranged on the clamping mounting seat (220), the second fixing device (210) comprises a pushing seat (211) movably arranged on the clamping mounting seat (220) and at least two clamping members (212) movably arranged on the pushing seat (211), the clamping member (212) being provided with at least one abutting portion, and The abutting portions of different clamping members (212) are mutually staggered, and the abutting portions between all the clamping members (212) are combined to form a clamping channel corresponding to the end of the core rod (910), and a push-fit structure is provided between the clamping member (212) and the pushing seat (211), and the clamping drive mechanism (230) can drive the clamping member (212) and the pushing seat (211) to move relative to each other, so as to control the size of the clamping channel through the push-fit structure; The clamping drive mechanism (230) comprises a clamping drive cylinder (231) and a transmission shaft (232) arranged on the clamping mounting seat (220); one end of the transmission shaft (232) is fixedly connected to the piston rod of the clamping drive cylinder (231), and one end of the transmission shaft (232) is movably connected to the clamping member (212); The clamping drive mechanism (230) further comprises a connecting piece (233), one end of which is snap-fitted with the clamping piece (212), the other end of which is provided with a slot (234), and the end of the transmission shaft (232) is provided with a clamping head (235) which can be inserted into the slot (234) and can rotate in the slot (234); the clamping drive cylinder (231) is arranged on the side of the clamping mounting seat (220), the piston rod of the clamping drive cylinder (231) is connected to an adapter plate (237), the adapter plate (237) is connected to the transmission shaft (232), and the transmission shaft (232) and the connecting piece (233) are hollow structures to form an output channel (201) connected to the clamping channel.

2. The mandrel fixing mechanism according to claim 1, characterized in that: The clamping member (212) is provided with at least one concave positioning groove (213), and the bottom of the concave positioning groove (213) forms the abutment portion.

3. The mandrel fixing mechanism according to claim 2, characterized in that: The clamping member (212) is provided with at least two outer protrusions (214) distributed at intervals, and the concave positioning grooves (213) are provided at the outer protrusions (214), so that each of the clamping members (212) has at least two concave positioning grooves (213), and a slot (215) corresponding to the outer protrusions (214) is provided at the lower part between adjacent outer protrusions (214).

4. The mandrel fixing mechanism according to claim 3, characterized in that: The second fixing device (210) comprises two clamping members (212), the two clamping members (212) are arranged opposite to each other, and the concave positioning groove (213) is a V-shaped groove.

5. The mandrel fixing mechanism according to claim 1, characterized in that: The push-fit structure comprises a push-fitting inclined surface (216) arranged on the clamping member (212) and an inner pressure inclined surface (217) arranged on the push seat (211) and matched with the push-fitting inclined surface (216).

6. The mandrel fixing mechanism according to claim 1, characterized in that: The invention also comprises a rotation driving mechanism (300), wherein the rotation driving mechanism (300) is capable of driving the first fixing device or the second fixing device (210) to rotate, and the first fixing device and the second fixing device (210) are connected via a linkage mechanism, the first fixing component (100) and the second fixing component (200) are respectively arranged at two ends of the frame (900), the linkage mechanism comprises a linkage shaft (310) rotatably arranged on the frame (900), linkage synchronous pulleys (320) are respectively arranged at two ends of the linkage shaft (310), the first fixing device and the second fixing device (210) are respectively provided with driven synchronous pulleys (330) connected to the linkage synchronous pulleys (320), and the rotation driving mechanism (300) is capable of driving the linkage shaft (310) to rotate.

7. The mandrel fixing mechanism according to claim 1, characterized in that: The second fixing assembly (200) is provided with an output channel (201) connected to the clamping channel, and the clamping mounting seat (220) is provided with a cutting device (240) corresponding to the output channel (201), and the cutting device (240) comprises a cutting cylinder (241) arranged on the clamping mounting seat (220) and a cutter (242) connected to the cutting cylinder (241).

8. A headless spring winding machine, characterized in that: include: The mandrel fixing mechanism according to any one of claims 1 to 7; A wire feeding mechanism (500), wherein the wire feeding mechanism (500) is arranged on the frame (900).

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