Straight core rod assembly and wire spring processing equipment

By setting multiple wire feeding grooves and cutter assemblies on the straight core rod body and combining them with the drive structure, the A-sequence processing of the wire spring can be completed using one raw wire, which solves the problem of complex wire feeding devices in the existing technology and simplifies the structure of the wire feeding device.

CN116213597BActive Publication Date: 2025-10-21SICHUAN HUAFENG ENTERPRISE GRP
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Patent Information

Application Number
CN202310078245.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-01-13
Publication Date
2025-10-21
Estimated Expiration
2043-01-13

AI Technical Summary

Technical Problem

The existing straight core rod assembly needs to feed multiple beryllium copper wires at the same time, resulting in a complex wire feeding device structure.

Method used

A plurality of wire feeding grooves are arranged on the straight core rod body, and the cutting assembly and the driving structure cooperate to realize the feeding and cutting of a raw wire, thereby simplifying the structure of the wire feeding device.

Benefits of technology

By combining multiple wire feeding channels and a cutting assembly, the structure of the wire feeding device is simplified, enabling the A-sequence processing of beryllium copper wire and reducing the complexity of the wire feeding device.

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Abstract

The application discloses a straight core rod assembly and a wire spring processing device. The straight core rod assembly comprises a straight core rod body, a plurality of first wire feeding grooves are arranged around the straight core rod body along the axial direction of the straight core rod body, a cutter assembly is arranged on the straight core rod body, a wire feeding hole corresponding to the first wire feeding groove is arranged on the cutter assembly, and the cutting edge of the cutter assembly is arranged at one end of the wire feeding hole close to the first wire feeding groove. A first driving structure is connected to the straight core rod body and used for driving the straight core rod body to rotate. The beryllium copper wire can realize A sequence processing of the wire spring by using one original wire.
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Description

Technical Field

[0001] The invention belongs to the field of wire spring processing equipment, and in particular relates to a straight core rod assembly and wire spring processing equipment. Background Art

[0002] Wire spring structure such as Figure 10 As shown, the process involves multiple steps, generally divided into two stages: A and B. Stage A requires inserting multiple beryllium copper wires into a bushing, separating the wires, and then press-fitting the front sleeve onto the bushing. Because the wire spring contains multiple beryllium copper wires, the wire feed mechanism in existing wire springs undergoing stage A processing must simultaneously feed multiple beryllium copper wires into the straight mandrel assembly, enabling simultaneous feeding and cutting of multiple wires.

[0003] With the existing straight core rod assembly structure, since multiple beryllium copper wires need to be fed into the straight core rod assembly at the same time, the structure of the wire feeding device is complicated. Summary of the Invention

[0004] In order to solve the problem that the existing straight core rod assembly requires multiple wires to be fed simultaneously, resulting in a complex wire feeding device structure, the present invention provides a straight core rod assembly and wire spring processing equipment, wherein the beryllium copper wire can realize A-sequence processing of the wire spring using only one raw wire.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A first aspect of the present invention discloses a straight mandrel assembly comprising:

[0007] A straight mandrel body, wherein a plurality of first wire feeding grooves are provided along the axial direction around the straight mandrel body;

[0008] a cutting assembly, wherein the cutting assembly is provided with a wire feeding hole corresponding to the first wire feeding groove, and the blade of the cutting assembly is located at an end of the wire feeding hole close to the first wire feeding groove;

[0009] A first driving structure is connected to the straight mandrel body and is used to drive the straight mandrel body to rotate.

[0010] In this solution, multiple first wire feeding grooves are set on the straight core rod body. The first wire feeding grooves correspond to the position of the wire feeding holes. The wire feeding device starts to feed the wire. After a wire feeding cycle is completed, the first driving structure drives the straight core rod body to rotate. Since one end of the straight core rod body is close to the cutter assembly, the beryllium copper wire can be cut during the rotation. After the cutting is completed, the straight core rod body continues to rotate so that the next first wire feeding groove corresponds to the position of the wire feeding hole, and then the second wire feeding cycle is carried out. This cycle is repeated to realize wire feeding of multiple first wire feeding grooves on the straight core rod body, that is, to realize A-sequence processing of the wire spring with one raw wire.

[0011] In one possible design, the first driving structure includes a servo motor, a hollow turntable connected to an output shaft of the servo motor, and a turntable connected to an outer ring of the hollow turntable;

[0012] The straight mandrel body is provided with a clamping block, the turntable is provided with a through hole for fixing the straight mandrel body, and the inner wall of the through hole is provided with a groove for clamping the clamping block.

[0013] In a possible design, the straight core rod body is covered with a sleeve fixed on the turntable.

[0014] In one possible design, the cutter assembly includes:

[0015] an inner cutter, wherein the inner cutter is provided with a second wire feeding groove corresponding to the first wire feeding groove;

[0016] An outer cutter is provided with a fixing hole for fixing the inner cutter.

[0017] In a possible design, it further includes a fixing sleeve fixed to the non-rotating part of the hollow turntable, and the fixing sleeve is connected to the external cutter through a distance adjustment bolt.

[0018] In a possible design, at least two second wire feeding grooves are provided on the inner cutter.

[0019] The second aspect of the present invention provides a wire spring processing device, comprising a straight core rod assembly as described in the first aspect and any possible embodiment thereof, a wire feeding assembly for feeding wire to the straight core rod assembly, and a wire dividing assembly for cooperating with the straight core rod assembly to realize wire dividing and pressing of the wire spring.

[0020] In one possible design, the wire feeding assembly includes a wire feeding box, a wire feeding wheel, a wire pressing structure having one end rotatably connected to the wire feeding box for cooperating with the wire feeding wheel to compress the raw wire, a buckle structure for fixing the other end of the wire pressing structure, and a second driving structure for driving the wire feeding wheel to rotate;

[0021] A raw wire straightening structure is provided on one side of the wire feeding end face of the wire feeding wheel and a wire feeding tube fixing structure for fixing the wire feeding tube is provided on the other side;

[0022] The wire pressing structure includes a wire pressing cover, a pressure rod with one end rotatably connected to the wire pressing cover, an idler wheel installed on the pressure rod, a limiting structure arranged on the wire pressing cover to limit the movement of the other end of the pressure rod, and a first spring connected between the wire pressing cover and the other end of the pressure rod to push the other end of the pressure rod to move toward the wire feeding wheel.

[0023] In one possible design, the wire separation assembly includes a guide rail, a slider placed on the guide rail, a third driving device for driving the slider to move along the guide rail, and a wire separation structure provided on the slider;

[0024] The wire dividing structure includes a wire dividing guide sleeve with a guide groove on the inner wall, a wire dividing head at one end placed outside the wire dividing guide sleeve, a guide pin fixed on the wire dividing head and placed in the guide groove, and a second spring placed in the wire dividing guide sleeve and pushing the wire dividing head so that the wire dividing head is placed outside the cavity of the wire dividing guide sleeve and moves away from the wire dividing guide sleeve.

[0025] In a possible design, it further includes a first detection device for detecting whether the bushing is installed on the straight mandrel body and a second detection device for detecting whether the front sleeve is installed on the wire separation assembly;

[0026] The first driving device, the second driving device, the third driving device, the first detecting device and the second detecting device are all connected to the control unit by signals.

[0027] Compared with the prior art, the present invention has at least the following advantages and beneficial effects:

[0028] The present invention arranges multiple wire feeding grooves on the straight core rod body and cooperates with the cutter assembly and the drive assembly. By driving the straight core rod body to rotate and the cutter assembly to cut the raw wire, the raw wire can be fed into different wire feeding grooves of the straight core rod body. Beryllium copper wire can be processed into A-sequence of wire spring by using only one raw wire, simplifying the complexity of the wire feeding device structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic structural diagram of the straight mandrel body of the present invention;

[0031] Figure 2 is a cross-sectional view of the straight mandrel assembly of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection between the straight mandrel body and the inner cutter of the present invention;

[0033] Figure 4 Schematic diagram of the structure of the external cutting knife of the present invention;

[0034] Figure 5A perspective view of a wire spring processing apparatus according to the present invention;

[0035] Figure 6 is a cross-sectional view of the wire spring processing equipment of the present invention;

[0036] Figure 7 for Figure 6 Enlarged view of part A in the middle;

[0037] Figure 8 for Figure 6 Enlarged view of middle part B;

[0038] Figure 9 It is a structural schematic diagram of the wire feeding assembly of the present invention;

[0039] Figure 10 This is the structural diagram of the wire spring. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0042] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0044] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended only to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] The first aspect of the present invention discloses a straight mandrel assembly, which can be used for Figure 10 The straight mandrel assembly includes a straight mandrel body 21, a cutter assembly and a first drive structure. Figure 1 As shown, the straight mandrel body 21 is provided with a plurality of first wire feeding grooves 211 along its axial direction. The first wire feeding grooves are used to accommodate the raw wire 4 to be cut or cut. The cutter assembly is provided with a wire feeding hole corresponding to the first wire feeding groove 211, and the blade of the cutter assembly is positioned at the end of the wire feeding hole closest to the first wire feeding groove. That is, the raw wire enters the cutter assembly through the wire feeding hole, passes through the cutter assembly's blade, and then enters the first wire feeding groove 211. A first drive structure is connected to the straight mandrel body to drive the straight mandrel body to rotate.

[0047] During processing, the first drive structure drives the straight mandrel body to rotate, switching between different first wire feeding slots 211 on different straight mandrel bodies to correspond to the wire feeding holes, thereby feeding the raw wire into the first wire feeding slots. After the raw wire is fed into the first wire feeding slots, the first drive structure drives the straight mandrel body to rotate. Due to the small gap between the straight mandrel body 21 and the cutter assembly, the cutter assembly can cut the raw wire.

[0048] There are many ways to implement the first driving structure, for example, Figure 2 As shown, the first driving structure adopts a structure of a servo motor 221, a hollow turntable 222 and a turntable 223, wherein: Figure 2 The servo motor is not shown. The hollow turntable is a conventional device and includes a rotating portion and a non-rotating portion. The rotating portion includes an outer ring, and the non-rotating portion includes an inner ring and a mounting plate. The output shaft of the servo motor is connected to the hollow turntable to drive the rotating portion of the hollow turntable to rotate. The turntable 223 is the rotating portion of the entire straight mandrel assembly. It is connected to the outer ring of the hollow turntable 222 and moves with the outer ring. To facilitate the replacement of different turntables, the turntable is connected to the outer ring of the hollow turntable 222 using a detachable connection structure, such as a bolted connection. The turntable 223 is provided with a through hole for fixing the straight mandrel body. The rotation of the turntable 223 drives the straight mandrel body to rotate. In order to facilitate the rotation of the straight mandrel body 1, a clamping block 212 is provided on the straight mandrel body 1. The inner wall of the through hole of the turntable is provided with a groove for clamping the clamping block. In order to avoid the bushing 5 on the straight mandrel assembly from being ejected when feeding the wire, a sleeve 213 fixed on the turntable is provided on the outer sleeve of the straight mandrel body. Figure 7 shown.

[0049] There are many ways to implement the cutter assembly, such as using an integral structure, or Figure 3 、 4 As shown in the split structure. Figure 3 、 4 As shown, the cutter assembly includes an inner cutter 231 and an outer cutter 232. The inner cutter 231 is provided with a second wire feeding groove 2311 corresponding to the first wire feeding groove; the outer cutter is provided with a fixing hole 2321 for fixing the inner cutter. The second wire feeding groove 2311 and the fixing hole 2321 together realize the limitation of the raw wire. After the raw wire is fed into the first wire feeding groove of the straight core rod body, the straight core rod body can realize the raw wire cutting when it rotates. In order to facilitate the adjustment of the distance between the end of the straight core rod body and the end of the blade of the cutter assembly, the outer cutter is fixed by bolts, that is, the outer cutter is connected to the fixed sleeve 233 through the distance adjusting bolt 234, and the fixed sleeve is fixed on the non-rotating part of the hollow turntable. In order to facilitate the processing of wire springs of different diameters, at least two second wire feeding grooves can be provided on the inner cutter, such as Figure 3 The inner cutter shown in the figure shows a structure with two second wire feed grooves. After installation, the two second wire feed grooves are unequally spaced from the axis of the straight mandrel body 21. When processing wire springs of different specifications, the wire is fed through the second wire feed grooves in different positions, and the straight mandrel body 21 and the turntable can be changed to the desired specifications. Of course, in order to process only one specification of wire spring, only one second wire feed groove can be provided on the inner cutter. The structure of the cutter assembly described above not only facilitates the replacement of the inner cutter, but also facilitates the adjustment of the distance between the end of the straight mandrel body and the end of the cutter blade according to actual conditions, thereby improving the cutting effect.

[0050] In order to facilitate the disassembly and assembly of the straight mandrel assembly and the replacement of parts, for example, the turntable 223 is connected to the outer ring of the hollow turntable 222 using a detachable structure. The detachable structure can be as follows Figure 2 The bolt connection method shown. A latch slot 2322 is provided on the outer wall of the outer cutter 232. The outer cutter 232 is fixed to the non-rotating portion of the hollow turntable 222 by a latch, achieving rotational limit. A wire hole is provided at the position of the fixing sleeve 233 corresponding to the second wire feeding groove 2311 to prevent interference with the raw wire feeding.

[0051] A second aspect of the present invention provides a wire spring processing device comprising a straight mandrel assembly as described in the first aspect and any possible embodiment thereof, a wire feed assembly for feeding wire to the straight mandrel assembly, and a wire splitting assembly for cooperating with the straight mandrel assembly to separate and press-fit the wire spring. The wire feed assembly feeds wire to the straight mandrel assembly, and after the straight mandrel assembly completes multi-wire cutting, the wire splitting assembly completes the separation and press-fitting of the wire spring.

[0052] The wire feeding assembly can be implemented using various existing structures, for example, Figure 5 、 6 As shown in Figure 9, the wire feeding assembly includes a wire feeding box 11, a wire feeding wheel 12, a wire pressing structure rotatably connected to the wire feeding box 11 at one end for cooperating with the wire feeding wheel 11 to compress the raw wire, a buckle structure 16 for fixing the other end of the wire pressing structure, and a second driving structure 17 for driving the wire feeding wheel 12 to rotate. In order to facilitate the straightening of the raw wire and the feeding of the straightened raw wire into the straight core rod assembly, a raw wire straightening structure 13 is provided on one side of the wire feeding end face of the wire feeding wheel 12 and a wire feeding tube fixing structure 14 for fixing the wire feeding tube 17 is provided on the other side. The buckle structure 16 can adopt a spring buckle structure for easy operation. The second driving structure 17 can be driven by a servo motor or a cylinder. Preferably, a servo motor is adopted to avoid the problem of constant clamping and loosening when the cylinder is driven, thereby improving the wire feeding efficiency.

[0053] The wire pressing structure includes a wire pressing cover 151, a pressure rod 152 with one end rotatably connected to the wire pressing cover 151, an idler wheel 153 installed on the pressure rod 152, a limiting structure 154 arranged on the wire pressing cover 151 to limit the movement of the other end of the pressure rod 152, and a first spring 155 connected between the wire pressing cover 151 and the other end of the pressure rod 152 to push the other end of the pressure rod 152 to move toward the wire feeding wheel 12.

[0054] A V-shaped groove is provided on the wire feeding wheel 12, and the idler wheel 153 adopts a flat structure corresponding to the V-shaped groove, so that it just forms a triangular structure. After the raw wire passes through the V-shaped groove, it is compressed under the action of the first spring.

[0055] The strand straightening structure 13 can be constructed using two cowhides with straightening grooves. One cowhide is fixed to the wire feed box 11, with its straightening end surface aligned with the wire feeding end surface of the wire feed roll 12. The other cowhide is fixed to the wire pressing cover 151. When the wire pressing structure compresses the strands, both cowhides simultaneously compress the strands. Using the cowhides not only removes foreign matter from the strands but also achieves straightening.

[0056] The wire feeding tube fixing structure 14 is as follows Figure 9 As shown, a detachable cover plate is used to fix the wire feeding tube 7, and the cover plate is fixed to the wire feeding box 11 by bolts.

[0057] For example, Figure 6 、 8 As shown, the wire splitting assembly includes a guide rail 31, a slider 32 placed on the guide rail 31, a third driving device 33 for driving the slider 32 to move along the guide rail 31, and a wire splitting structure provided on the slider 32. The wire splitting structure includes a wire splitting guide sleeve 341, a wire splitting head 342, a guide pin 344, and a second spring 343. The wire-dividing guide sleeve 341 is provided with a cavity, and a guide groove 3411 is provided on the inner wall, and the guide groove is arranged along the axial direction of the cavity; the wire-dividing head 342 can adopt a T-shaped structure as shown in the figure, one end of which is placed outside the wire-dividing guide sleeve 341, and the other end is placed in the cavity of the wire-dividing guide sleeve 341; the guide pin 344 is provided at one end of the wire-dividing head 342 placed in the cavity, and both ends of the guide pin 344 are placed in the guide groove 3411 and can slide along the guide groove 3411; the second spring 343 is placed in the cavity of the wire-dividing guide sleeve 341, and is placed between the wire-dividing head 342 and the wire-dividing guide sleeve 341 to push the wire-dividing head 342 so that the end of the wire-dividing head 342 placed outside the cavity of the wire-dividing guide sleeve 341 moves in the direction away from the wire-dividing guide sleeve 341, that is, Figure 9 As shown, the spring pushes the wire splitting head 342 to move to the left to realize the wire splitting operation of multiple raw wires.

[0058] Preferably, the wire guide sleeve 341 can be constructed of an outer sleeve, an outer sleeve positioned outside an inner sleeve, and an end cap. The guide groove 3411 is provided on the sidewall of the inner sleeve to facilitate its installation. The end cap is detachably connected to the outer sleeve and provided with a pressure dividing hole. One end of the wire splitter head is positioned outside the wire guide sleeve 341 after passing through the pressure dividing hole, facilitating replacement of the wire splitter head 342. By replacing wire splitters of different diameters and end caps with corresponding pressure dividing hole diameters, the processing requirements for wire springs of different specifications can be met.

[0059] Preferably, to realize the automatic operation of the system, Figure 5 、 6As shown, the system further includes a first detection device 224 for detecting whether the bushing is installed on the straight mandrel body, and a second detection device 35 for detecting whether the front sleeve 6 is installed on the wire splitting assembly. The first, second, and third drive devices, as well as the first and second detection devices 224 and 35, are all connected to a control unit. The control unit can be implemented using an intelligent chip such as a PLC or single-chip microcomputer and its peripheral circuits. The first detection device 224 can be implemented using optical fibers or other sensors, and the second detection device 35 can be implemented using a photoelectric switch or other sensor.

[0060] The above-mentioned wire spring processing equipment can realize the processing of wire springs by only using one raw wire. Its working principle or operation steps are as follows:

[0061] like Figure 6 、 9 As shown, the spring buckle is released, and the wire pressing structure rotates upward along the hinge. One end of the wire feed tube is installed on the wire feed tube fixing structure 14, and the other end is connected to the wire hole of the fixing sleeve 233. The beryllium copper wire is placed into the V-shaped groove of the wire feed wheel 12 and one end is placed in the wire feed tube. The wire pressing structure is then pressed and rotated downward along the hinge, so that the idler wheel 153 and the raw wire straightening structure 13 compress the raw wire, and then the spring buckle is fastened.

[0062] Press Figure 7 As shown, the bushing is installed on the sleeve 213; Figure 8 As shown, the front sleeve is placed on the splitter head. At this point, the first detection device 224 detects that the sleeve is installed on the straight mandrel body, and the second detection device 35 detects that the front sleeve 6 is installed on the splitter assembly. A rising edge signal is detected during the installation of the sleeve and front sleeve. After installation, the falling edge signal is detected when the operator's hand leaves the pick-up and placement position, and the equipment begins operation.

[0063] The wire feeding wheel of the wire feeding device rotates to start feeding the wire, and the raw wire enters the straight core rod body 21 along the wire feeding tube and the cutter assembly. At this time, the first driving structure is started to drive the straight core rod body 21 to rotate so that the second first wire feeding groove 211 corresponds to the first wire feeding groove, and the first section of raw wire is cut; the wire feeding device starts the second wire feeding operation to feed the raw wire into the second first wire feeding groove 211, and then starts the first driving structure to drive the straight core rod body 21 to rotate so that the third first wire feeding groove 211 corresponds to the first wire feeding groove, and the second section of raw wire is cut; ...; this step is repeated to complete the cutting of 5 sections of raw wire.

[0064] Start the wire splitting assembly and drive the slider to move toward the side close to the straight core rod body 21. The axis of the wire splitting head is in a straight line with the axis of the straight core rod body 21. After the wire splitting head contacts the raw wire to be cut, it pushes the raw wire apart in the circumferential direction. The force continues to move, the spring is compressed, the wire splitting head retracts into the wire splitting guide sleeve 341, and the front sleeve is pressed into the bushing to complete the assembly of the product. After the assembly is completed, drive the slider to move toward the side away from the straight core rod body 21. After it retreats, the wire splitting head automatically resets under the action of the spring. Remove the finished product of the wire spring and proceed to the next assembly process.

[0065] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A straight mandrel assembly, characterized in that: include: A straight mandrel body, wherein a plurality of first wire feeding grooves are provided along the axial direction around the straight mandrel body; a cutting assembly, wherein the cutting assembly is provided with a wire feeding hole corresponding to the first wire feeding groove, and the blade of the cutting assembly is located at an end of the wire feeding hole close to the first wire feeding groove; a first drive structure connected to the straight mandrel body for driving the straight mandrel body to rotate; the first drive structure includes a servo motor, a hollow turntable connected to the output shaft of the servo motor, and a turntable connected to the outer ring of the hollow turntable; The straight mandrel body is provided with a clamping block, the turntable is provided with a through hole for fixing the straight mandrel body, and the inner wall of the through hole is provided with a groove for clamping the clamping block.

2. A straight mandrel assembly according to claim 1, characterized in that: The straight core rod body is covered with a sleeve fixed on the turntable.

3. The straight mandrel assembly according to claim 1, characterized in that: The cutter assembly comprises: an inner cutter, wherein the inner cutter is provided with a second wire feeding groove corresponding to the first wire feeding groove; An outer cutter is provided with a fixing hole for fixing the inner cutter.

4. A straight mandrel assembly according to claim 3, characterized in that: It also includes a fixing sleeve fixed to the non-rotating part of the hollow turntable, and the fixing sleeve is connected to the external cutter through a distance adjusting bolt.

5. The straight mandrel assembly according to claim 3, characterized in that: At least two second wire feeding grooves are provided on the inner cutter.

6. A wire spring processing device, characterized in that: It comprises a straight core rod assembly as described in any one of claims 1 to 5, a wire feeding assembly for feeding wire to the straight core rod assembly, and a wire dividing assembly for cooperating with the straight core rod assembly to realize wire spring dividing and pressing.

7. The wire spring processing equipment according to claim 6, characterized in that: The wire feeding assembly comprises a wire feeding box (11), a wire feeding wheel (12), a wire pressing structure having one end rotatably connected to the wire feeding box (11) for cooperating with the wire feeding wheel (11) to press the raw wire, a buckle structure (16) for fixing the other end of the wire pressing structure, and a second driving structure (17) for driving the wire feeding wheel (12) to rotate; A raw wire straightening structure (13) is provided on one side of the wire feeding end face of the wire feeding wheel (12), and a wire feeding tube fixing structure (14) for fixing the wire feeding tube (17) is provided on the other side; The wire pressing structure comprises a wire pressing cover (151), a pressure rod (152) one end of which is rotatably connected to the wire pressing cover (151), an idler wheel (153) mounted on the pressure rod (152), a limiting structure (154) arranged on the wire pressing cover (151) for limiting the movement of the other end of the pressure rod (152), and a first spring (155) connected between the wire pressing cover (151) and the other end of the pressure rod (152) for pushing the other end of the pressure rod (152) to move toward the wire feeding wheel (12).

8. The wire spring processing equipment according to claim 6, characterized in that: The wire splitting assembly comprises a guide rail (31), a slider (32) disposed on the guide rail (31), a third driving device (33) for driving the slider (32) to move along the guide rail (31), and a wire splitting structure disposed on the slider (32); The wire splitting structure comprises a wire splitting guide sleeve (341) having a guide groove (3411) provided on the inner wall thereof, a wire splitting head (342) with one end placed outside the wire splitting guide sleeve (341), a guide pin (344) fixed on the wire splitting head (342) and placed in the guide groove (3411), and a second spring (343) placed in the wire splitting guide sleeve (341) and pushing the wire splitting head (342) so that the wire splitting head (342) is placed outside the cavity of the wire splitting guide sleeve (341) and moves in a direction away from the wire splitting guide sleeve (341).

9. The wire spring processing equipment according to claim 6, characterized in that: It also includes a first detection device (224) for detecting whether the bushing is installed on the straight core rod body and a second detection device (35) for detecting whether the front sleeve is installed on the wire dividing assembly; The first drive structure, the second drive structure, the third drive device, the first detection device (224) and the second detection device (35) are all connected to the control unit via signals.

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