CN116213597A - Straight core rod assembly and wire spring processing equipment - Google Patents

Abstract

The invention discloses a straight core rod component and wire spring processing equipment, the straight core rod component comprises: the straight core rod comprises a straight core rod body, wherein a plurality of first wire conveying grooves are formed in the periphery of the straight core rod body along the axial direction of the straight core rod body; a cutting knife assembly, wherein the cutting knife assembly is provided with a wire feeding hole corresponding to the first wire feeding groove, and the cutting edge of the cutting knife assembly is arranged at one end of the wire feeding hole, which is close to the first wire feeding groove; the 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 be used for realizing the A-order processing of the wire spring by adopting one precursor wire.

Description

Straight core rod assembly and wire spring processing equipment

Technical Field

The invention belongs to the field of wire spring processing equipment, and particularly relates to a straight core rod assembly and wire spring processing equipment.

Background

The wire spring structure is shown in fig. 10, and the processing steps are generally divided into an a-order and a B-order. The A sequence is to install a plurality of beryllium copper wires into the bushing for wire separation, and then press-fit the front sleeve on the bushing. Because the number of the beryllium copper wires in the wire spring is multiple, when the existing wire spring is used for processing A sequence, the wire feeding device of the wire spring needs to simultaneously feed the plurality of the beryllium copper wires into the straight core rod assembly, so that the simultaneous wire feeding and cutting of multiple wires are realized.

By adopting the existing straight core rod assembly structure, the wire feeding device is complex in structure because a plurality of beryllium copper wires are required to be fed into the straight core rod assembly at the same time.

Disclosure of Invention

In order to solve the problem that the existing straight core rod assembly needs multiple wires to be fed simultaneously, so that a wire feeding device is complex in structure, the invention provides the straight core rod assembly and the wire spring processing equipment, and the A-sequence processing of a wire spring can be realized by adopting one primary wire for beryllium copper wires.

The aim of the invention is achieved by the following technical scheme:

a first aspect of the present invention discloses a straight core rod assembly comprising:

the straight core rod comprises a straight core rod body, wherein a plurality of first wire conveying grooves are formed in the periphery of the straight core rod body along the axial direction of the straight core rod body;

a cutting knife assembly, wherein the cutting knife assembly is provided with a wire feeding hole corresponding to the first wire feeding groove, and the cutting edge of the cutting knife assembly is arranged at one end of the wire feeding hole, which is close to the first wire feeding groove;

the first driving structure is connected to the straight core rod body and used for driving the straight core rod body to rotate.

According to the scheme, the plurality of first wire feeding grooves are formed in the straight core rod body, the first wire feeding grooves correspond to wire feeding holes, the wire feeding device starts to feed wires, after one wire feeding period is finished, the first driving structure drives the straight core rod body to rotate, the cutting of beryllium copper wires can be achieved in the rotating process due to the fact that one end of the straight core rod body is close to the cutter assembly, after the cutting is finished, the straight core rod body continues to rotate to enable the next first wire feeding groove to correspond to the wire feeding holes, the wire feeding period is conducted for the second time, the wire feeding of the plurality of first wire feeding grooves is achieved in a circulating and reciprocating mode, and therefore A-order machining of a wire spring is achieved through one primary wire.

In one possible design, the first drive structure comprises 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;

the straight core rod comprises a straight core rod body, and is characterized in that a clamping block is arranged on the straight core rod body, a through hole for fixing the straight core rod body is arranged on the rotary table, and a groove for clamping the clamping block is formed in the inner wall of the through hole.

In one possible design, the straight core rod body is sheathed with a sleeve secured to the turntable.

In one possible design, the cutter assembly comprises:

the inner cutter is provided with a second wire feeding groove corresponding to the first wire feeding groove;

the outer cutter is provided with a fixing hole for fixing the inner cutter.

In one possible design, the rotary table further comprises a fixed sleeve fixed on the non-rotating part of the hollow rotary table, and the fixed sleeve is connected with the external cutter through a distance adjusting bolt.

In one possible design, the inner cutter is provided with at least two second wire feed grooves.

A second aspect of the present invention provides a wire spring processing apparatus, comprising a straight core rod assembly as described in the first aspect and any one of the possibilities thereof, a wire feeding assembly for feeding wire to the straight core rod assembly, and a wire separating assembly for cooperating with the straight core rod assembly to separate the wire spring and press-fit the wire spring.

In one possible design, the wire feeding assembly comprises a wire feeding box, a wire feeding wheel, a wire pressing structure, a buckle structure and a second driving structure, wherein one end of the wire pressing structure is rotatably connected to the wire feeding box and used for being matched with the wire feeding wheel to press a precursor wire, and the buckle structure is used for fixing the other end of the wire pressing structure;

one side of the wire feeding end face of the wire feeding wheel is provided with a precursor straightening structure, and the other side of the wire feeding end face of the wire feeding wheel is provided with a wire feeding pipe fixing structure for fixing a wire feeding pipe;

the wire pressing structure comprises a wire pressing cover, a pressing rod with one end rotatably connected to the wire pressing cover, an idler wheel arranged on the pressing rod, a limiting structure arranged on the wire pressing cover and used for limiting the movement of the other end of the pressing rod, and a first spring connected between the wire pressing cover and the other end of the pressing rod and used for pushing the other end of the pressing rod to move towards the wire feeding wheel.

In one possible design, the wire dividing assembly comprises a guide rail, a sliding block arranged on the guide rail, a third driving device for driving the sliding block to move along the guide rail, and a wire dividing structure arranged on the sliding block;

the yarn dividing structure comprises a yarn dividing guide sleeve, a yarn dividing head, a guide pin and a second spring, wherein the guide groove is formed in the inner wall of the yarn dividing guide sleeve, one end of the yarn dividing head is arranged outside the yarn dividing guide sleeve, the guide pin is fixed on the yarn dividing head and arranged in the guide groove, the second spring is arranged in the yarn dividing guide sleeve and pushes the yarn dividing head to enable one end of the yarn dividing head, which is arranged outside a cavity of the yarn dividing guide sleeve, to move towards the direction away from the yarn dividing guide sleeve.

In one possible design, the device further comprises a first detection device for detecting the absence of the installation of the bushing on the straight core rod body and a second detection device for detecting the absence of the installation of the front sleeve on the wire dividing assembly;

the first driving device, the second driving device, the third driving device, the first detection device and the second detection device are all in signal connection with the control unit.

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

according to the invention, through the arrangement of the multiple wire feeding grooves on the straight core rod body and the cooperation of the cutter assembly and the driving assembly, the raw wires can be fed into different wire feeding grooves of the straight core rod body by driving the straight core rod body to rotate and the cutter assembly to cut the raw wires, the beryllium copper wires can be processed in the A sequence of the wire spring by adopting one raw wire, and the complexity of the structure of the wire feeding device is simplified.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the straight core rod body of the present invention;

FIG. 2 is a cross-sectional view of the straight core rod assembly of the present invention;

FIG. 3 is a schematic diagram showing the connection between the straight core rod body and the inner cutter;

FIG. 4 is a schematic view of the structure of the outer cutter according to the present invention;

fig. 5 is a perspective view of the wire spring processing apparatus of the present invention;

FIG. 6 is a cross-sectional view of the wire spring machining apparatus of the present invention;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is an enlarged view of portion B of FIG. 6;

fig. 9 is a schematic view of the wire feed assembly of the present invention;

fig. 10 is a structural view of the wire spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present invention and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The first aspect of the present invention discloses a straight core rod assembly that can be applied to the a-sequence processing of a wire spring as shown in fig. 10. The straight core rod assembly includes a straight core rod body 21, a cutter assembly, and a first drive structure. As shown in fig. 1, a plurality of first wire feeding grooves 211 for accommodating the strands 4 to be cut or already cut are provided around the straight core rod body 21 in the axial direction thereof. The cutter assembly is provided with a wire feeding hole corresponding to the first wire feeding groove 211, and the cutting edge of the cutter assembly is arranged at one end of the wire feeding hole, which is close to the first wire feeding groove, namely, a precursor wire enters the cutter assembly through the wire feeding hole and then enters the first wire feeding groove 211 through the cutting edge of the cutter assembly. The first driving structure is connected to the straight core rod body and used for driving the straight core rod body to rotate.

During processing, the first driving structure drives the straight core rod body to rotate, and different first wire feeding grooves 211 on different straight core rod bodies can be switched to correspond to wire feeding holes so as to feed the precursor wires into the first wire feeding grooves. After the precursor is fed into the first wire feeding groove, in the process of driving the straight core rod body to rotate by the first driving structure, the precursor can be cut off by the cutter assembly due to the small gap between the straight core rod body 21 and the cutter assembly.

The first driving structure is implemented in many ways, and as illustrated in fig. 2, the first driving structure adopts a structure of a servo motor 221, a hollow turntable 222 and a turntable 223, wherein the servo motor is not illustrated in fig. 2. Hollow turrets are currently in common practice, and include a rotating portion that includes an outer ring and a non-rotating portion that 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 part of the hollow turntable to rotate. The turntable 223 is a rotating part of the entire straight core rod assembly, and is connected to the outer ring of the hollow turntable 222, and is followed by the outer ring. To facilitate replacement of different turntables, the turntables are coupled to the outer race of the idle table 222 using a removable coupling structure, such as a bolted connection. The rotary table 223 is provided with a through hole for fixing the straight core rod body, the rotary table 223 rotates to drive the straight core rod body to rotate, a clamping block 212 is arranged on the straight core rod body 1 for conveniently driving the straight core rod body 1 to rotate, and a groove for clamping the clamping block is formed in the inner wall of the through hole. With the first driving structure, in order to avoid ejecting the bushing 5 sleeved on the straight core rod assembly during wire feeding, a sleeve 213 fixed on the turntable is sleeved outside the straight core rod body, as shown in fig. 7.

Many implementations of the cutter assembly are possible, such as a unitary structure or a split structure as shown in fig. 3 and 4. As shown in fig. 3 and 4, the cutter assembly includes an inner cutter 231 and an outer cutter 232, and a second wire feeding groove 2311 corresponding to the first wire feeding groove is formed on the inner cutter 231; 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 achieve limiting of the precursor, and after the precursor is fed into the first wire feeding groove of the straight core rod body, the straight core rod body can achieve precursor cutting when rotating. In order to facilitate the adjustment of the distance between the end of the straight core rod body and the end of the cutting edge of the cutter assembly, the external cutter is fixed by bolts, that is, the external cutter is connected with a fixing sleeve 233 through a distance adjusting bolt 234, and the fixing sleeve is fixed on the non-rotating part of the hollow turntable. In order to facilitate the processing of wire springs with different diameter specifications, at least two second wire-feeding grooves can be formed in the inner cutter, and the inner cutter shown in fig. 3 shows a structure with two second wire-feeding grooves, wherein after the installation is completed, the distances between the two second wire-feeding grooves and the axis of the straight core rod body 21 are unequal. In the wire spring processing of different specifications, the wire is fed through the second wire feeding groove at different positions, and the straight core rod body 21 and the turntable are replaced with specifications. Of course, in order to process only wire springs of one specification, only one second wire feeding groove may be provided on the inner cutter. By adopting the structure of the cutter assembly, the cutter assembly is convenient for not only the replacement of the inner cutter, but also the adjustment of the distance between the end part of the straight core rod body and the end part of the cutting edge of the cutter assembly according to the actual situation, and the cutting effect is improved.

To facilitate disassembly and replacement of the straight core rod assembly and components, the turntable 223 is illustratively attached to the outer race of the hollow turret 222 using a removable structure, which may be a bolted connection as shown in FIG. 2. The outer wall of the outer cutter 232 is provided with a bolt slot 2322, and the outer cutter 232 is fixed on a non-rotating part of the hollow rotary table 222 through a bolt, so that rotation limit is realized. The fixing sleeve 233 is provided with wire holes at positions corresponding to the second wire feeding groove 2311 so as not to affect the wire feeding of the precursor wire.

A second aspect of the present invention provides a wire spring processing apparatus, comprising a straight core rod assembly as described in the first aspect and any one of the possibilities thereof, a wire feeding assembly for feeding wire to the straight core rod assembly, and a wire separating assembly for cooperating with the straight core rod assembly to separate the wire spring and press-fit the wire spring. And the wire feeding assembly feeds wires to the straight core rod assembly, and after the multi-wire cutting of the straight core rod assembly is completed, the wire splitting assembly completes wire splitting and press fitting of the wire spring.

The wire feeding assembly can be implemented by adopting various existing structures, and as shown in fig. 5, 6 and 9, by way of example, the wire feeding assembly comprises a wire feeding box 11, a wire feeding wheel 12, a wire pressing structure with one end rotatably connected to the wire feeding box 11 and used for being matched with the wire feeding wheel 11 to press a precursor wire, a buckle structure 16 used for fixing the other end of the wire pressing structure, and a second driving structure 17 used for driving the wire feeding wheel 12 to rotate. In order to facilitate straightening of the precursor and feeding of the straightened precursor into the straight core rod assembly, one side of the wire feeding end face of the wire feeding wheel 12 is provided with a precursor straightening structure 13, and the other side is provided with a wire feeding pipe fixing structure 14 for fixing a wire feeding pipe 17. The snap feature 16 may be a snap feature to facilitate operation. The second driving structure 17 can be driven by a servo motor or an air cylinder, preferably, the servo motor is adopted, so that the problem of continuous clamping and loosening feeding during the driving of the air cylinder is avoided, and the wire feeding efficiency is improved.

The wire pressing structure comprises a wire pressing cover 151, a pressing rod 152 with one end rotatably connected to the wire pressing cover 151, an idler 153 arranged on the pressing rod 152, a limiting structure 154 arranged on the wire pressing cover 151 and used for limiting the movement of the other end of the pressing rod 152, and a first spring 155 connected between the wire pressing cover 151 and the other end of the pressing rod 152 and used for pushing the other end of the pressing rod 152 to move towards the wire feeding wheel 12.

The wire feeding wheel 12 is provided with a V-shaped groove, the corresponding part of the idler wheel 153 and the V-shaped groove adopts a plane structure, so that the idler wheel 153 just forms a triangle structure, and the compression is realized under the action of the first spring after the precursor wire passes through the V-shaped groove.

The precursor straightening structure 13 may be two cowhides with straightening grooves, one cowhide is fixed on the wire feeding box 11, the straightening end face of the cowhide corresponds to the wire feeding end face of the wire feeding wheel 12, and the other cowhide is fixed on the wire pressing cover 151. When the yarn pressing structure presses the yarn, the two cowhides simultaneously realize the pressing of the yarn. The cowhide can remove foreign matters on the precursor and can achieve the aim of straightening.

The wire feeding tube fixing structure 14 is shown in fig. 9, and the wire feeding tube 7 is fixed by adopting a detachable cover plate, and the cover plate is fixed with the wire feeding box 11 through bolts.

As shown in fig. 6 and 8, the yarn dividing assembly includes 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 yarn dividing structure disposed on the slider 32. The yarn dividing structure includes a yarn dividing guide sleeve 341, a yarn dividing head 342, a guide pin 344, and a second spring 343. A cavity is arranged in the wire dividing guide sleeve 341, a guide groove 3411 is arranged on the inner wall of the cavity, and the guide groove is arranged along the axial direction of the cavity; the spinneret 342 can be in a T-shaped structure as shown in the figure, one end of the spinneret 342 is arranged outside the filament-dividing guide sleeve 341, and the other end of the spinneret 342 is arranged in a cavity of the filament-dividing guide sleeve 341; the guide pin 344 is disposed at one end of the spinneret 342 disposed in the cavity, and both ends of the guide pin 344 are disposed in the guide groove 3411, and can slide along the guide groove 3411; the second spring 343 is disposed in the cavity of the filament dividing guide sleeve 341 and between the filament dividing head 342 and the filament dividing guide sleeve 341, so as to push the filament dividing head 342 to move one end of the filament dividing head 342 disposed outside the cavity of the filament dividing guide sleeve 341 away from the filament dividing guide sleeve 341, i.e. as shown in fig. 9, the spring pushes the filament dividing head 342 to move leftwards to realize filament dividing operation of multiple filaments. One end of the spinneret 342

Preferably, the wire-dividing guide sleeve 341 may adopt a structure of an outer sleeve, an outer sleeve arranged outside the inner sleeve and an end cover, and the guide groove 3411 is arranged on the side wall of the inner sleeve, so as to facilitate the arrangement of the guide groove 3411; the end cover is connected to the outer sleeve through a detachable structure, a pressure dividing hole is formed in the end cover, and one end of the spinning head is placed outside the spinning guide sleeve 341 after passing through the pressure dividing hole, so that the spinning head 342 can be replaced conveniently. The processing requirements of the wire springs with different specifications can be realized by replacing the spinning heads with different diameters and the end covers with the diameters of the pressure dividing holes matched with the spinning heads.

Preferably, to realize the automatic operation of the system, as shown in fig. 5 and 6, the device further comprises a first detecting device 224 for detecting the absence of the installation of the bushing on the straight core rod body and a second detecting device 35 for detecting the absence of the installation of the front sleeve 6 on the wire dividing assembly; the first driving device, the second driving device, the third driving device, the first detecting device 224 and the second detecting device 35 are all connected to the control unit through signals. The control unit can be realized by intelligent chips such as a PLC, a singlechip and the like and peripheral circuits thereof. The first detecting means 224 may be implemented with an optical fiber or other sensor, and the second detecting means 35 may be implemented with an opto-electronic switch or other sensor.

By adopting the wire spring processing equipment, the wire spring can be processed by conveying only one precursor. The working principle or the operation steps are as follows:

as shown in fig. 6 and 9, the spring buckle is released, the wire pressing structure is rotated upward along the hinge, one end of the wire feeding tube is mounted on the wire feeding tube fixing structure 14, and the other end is connected with the wire hole of the fixing sleeve 233. The beryllium copper wire precursor is put into a 12V-shaped groove of a wire feeding wheel, one end of the beryllium copper wire precursor is placed into a wire feeding pipe, and then the wire pressing structure is pressed to rotate downwards along a hinge, so that the idler wheel 153 and the precursor straightening structure 13 press the precursor, and then a spring buckle is buckled.

As shown in fig. 7, the bushing is mounted on the sleeve 213; as shown in fig. 8, the front sleeve is sleeved on the yarn dividing head. At this time, the first detecting device 224 detects that the bushing is mounted on the straight core rod body, and the second detecting device 35 detects that the front sleeve 6 is mounted on the wire dividing assembly. The lifting signal can be detected when the bushing and the front sleeve are installed, the operator leaves the picking and placing position to detect the falling edge signal after the installation, and the equipment starts to operate.

The wire feeding wheel of the wire feeding device rotates to start wire feeding, and the precursor enters the straight core rod body 21 after passing through the wire feeding pipe and the cutter assembly, at the moment, 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 precursor is cut; the wire feeding device starts a second wire feeding operation to feed the precursor 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 precursor wire is cut; … …; this step was cycled to complete 5-filament cuts.

The wire dividing assembly is started, and the driving slide block moves to the side close to the straight core rod body 21. The spinneret axis is in line with the axis of the straight core rod body 21. After the spinneret contacts the cut filaments, the filaments are ejected in the circumferential direction. The force continues to move, the spring is compressed, the spinning head is retracted into the spinning guide sleeve 341, and the front sleeve is pressed into the bushing, so that the assembly of the product is completed. After the assembly is completed, the driving slide block moves to the side far away from the straight core rod body 21, and after the sliding block is retracted, the spinning head automatically resets under the action of a spring. And the next assembly process can be performed by taking off the wire spring product.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (10)

1. A straight core rod assembly, comprising:

the straight core rod comprises a straight core rod body, wherein a plurality of first wire conveying grooves are formed in the periphery of the straight core rod body along the axial direction of the straight core rod body;

a cutting knife assembly, wherein the cutting knife assembly is provided with a wire feeding hole corresponding to the first wire feeding groove, and the cutting edge of the cutting knife assembly is arranged at one end of the wire feeding hole, which is close to the first wire feeding groove;

the first driving structure is connected to the straight core rod body and used for driving the straight core rod body to rotate.

2. A straight core rod assembly according to claim 1, wherein: the first driving structure comprises a servo motor, a hollow rotary table connected to an output shaft of the servo motor and a rotary table connected to an outer ring of the hollow rotary table;

the straight core rod comprises a straight core rod body, and is characterized in that a clamping block is arranged on the straight core rod body, a through hole for fixing the straight core rod body is arranged on the rotary table, and a groove for clamping the clamping block is formed in the inner wall of the through hole.

3. A straight core rod assembly according to claim 2, wherein: the straight core rod body is sleeved with a sleeve fixed on the turntable.

4. A straight core rod assembly according to claim 2, wherein: the cutter assembly includes: the inner cutter is provided with a second wire feeding groove corresponding to the first wire feeding groove;

the outer cutter is provided with a fixing hole for fixing the inner cutter.

5. The straight core rod assembly according to claim 4, wherein: the rotary cutter is characterized by further comprising a fixed sleeve fixed on the non-rotating part of the hollow rotary table, and the fixed sleeve is connected with the external cutter through a distance adjusting bolt.

6. A straight core rod assembly according to claim 1, wherein: at least two second wire feeding grooves are formed in the inner cutter.

7. A wire spring processing device is characterized in that: a straight core rod assembly comprising any one of claims 1 to 6, 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 achieve wire spring wire dividing and press fitting.

8. The wire spring machining apparatus of claim 7, wherein: the wire feeding assembly comprises a wire feeding box (11), a wire feeding wheel (12), a wire pressing structure, a buckle structure (16) and a second driving structure (17), wherein one end of the wire pressing structure is rotatably connected to the wire feeding box (11) and is used for being matched with the wire feeding wheel (11) to press a precursor wire, the buckle structure (16) is used for fixing the other end of the wire pressing structure, and the second driving structure (17) is used for driving the wire feeding wheel (12) to rotate;

one side of the wire feeding end face of the wire feeding wheel (12) is provided with a precursor straightening structure (13) and the other side is provided with a wire feeding pipe fixing structure (14) for fixing a wire feeding pipe (17);

the wire pressing structure comprises a wire pressing cover (151), a pressing rod (152) with one end rotatably connected to the wire pressing cover (151), an idler wheel (153) arranged on the pressing rod (152), a limiting structure (154) arranged on the wire pressing cover (151) and used for limiting movement of the other end of the pressing rod (152), and a first spring (155) connected between the wire pressing cover (151) and the other end of the pressing rod (152) and used for pushing the other end of the pressing rod (152) to move towards the wire feeding wheel (12).

9. The wire spring machining apparatus of claim 7, wherein: the wire dividing assembly comprises a guide rail (31), a sliding block (32) arranged on the guide rail (31), a third driving device (33) for driving the sliding block (32) to move along the guide rail (31) and a wire dividing structure arranged on the sliding block (32); the yarn dividing structure comprises a yarn dividing guide sleeve (341) with a guide groove (3411) formed in the inner wall, a yarn dividing head (342) with one end arranged outside the yarn dividing guide sleeve (341), a guide pin (344) fixed on the yarn dividing head (342) and arranged in the guide groove (3411), and a second spring (343) arranged in the yarn dividing guide sleeve (341) and pushing the yarn dividing head (342) to enable the yarn dividing head (342) to be arranged at one end outside a cavity of the yarn dividing guide sleeve (341) to move towards the direction away from the yarn dividing guide sleeve (341).

10. The wire spring machining apparatus of claim 7, wherein: the device also comprises a first detection device (224) for detecting the absence of the installation of the bushing on the straight core rod body and a second detection device (35) for detecting the absence of the installation of the front sleeve on the wire dividing assembly;

the first driving device, the second driving device, the third driving device, the first detection device (224) and the second detection device (35) are all in signal connection with the control unit.

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