CN111545692A - Spring clamp, forming equipment and forming method of spring clamp - Google Patents

Abstract

The invention provides a spring hoop, a forming device and a forming method of the spring hoop, wherein the spring hoop comprises a forming wire rod which is curled into a circular ring with two open ends, the forming wire rod comprises a first bending part, a second bending part and a third bending part which are connected in sequence, the open end of the first bending part is wrapped on the inner side of the open end of the third bending part, a clamping block which protrudes outwards is arranged at the position, close to the connecting end of the first bending part and the second bending part, of the first bending part, a limiting clamping groove which is matched with the clamping block is arranged at the third bending part, and a hoop seat which protrudes outwards is also arranged at the third bending part.

Description

Spring clamp, forming equipment and forming method of spring clamp

Technical Field

The invention relates to the field of machining of spring clamps, in particular to a spring clamp, and forming equipment and a forming method of the spring clamp.

Background

The spring clamp has the advantages of being convenient to use, strong in clamping force, good in sealing performance and the like, can be installed quickly and locked reliably, has good corrosion resistance, and replaces two traditional pipeline connection modes of flanges and welding gradually.

Therefore, a spring clamp, a forming device of the spring clamp and a forming method of the spring clamp which are simple in structure, convenient to machine and high in machining precision and automation degree are urgently needed.

Disclosure of Invention

The invention aims to provide a spring clamp, and forming equipment and a forming method for the spring clamp, which solve the problems of complex structure, low production efficiency in a production process, complex process, inconvenience in processing and poor dimensional precision of the traditional spring clamp.

The invention provides the following technical scheme:

the utility model provides a spring clamp is including curling into the shaping wire rod of open ring in both ends, the shaping wire rod includes first flexion, second flexion and the third flexion that meets in order, the open end package of first flexion is established the inboard of the open end of third flexion, just first flexion be close to with the second flexion meets the end and is equipped with outside bellied fixture block, the third flexion be equipped with fixture block complex spacing draw-in groove, just the third flexion still includes an outside bellied clamp seat.

The forming equipment based on the spring hoop comprises a feeding supporting block A, a feeding supporting block B, a stamping part and a bending part, wherein the feeding supporting block A is connected to the feeding end of the stamping part, and the feeding supporting block B is arranged between the discharging end of the stamping part and the feeding end of the bending part; the bending part comprises a disc base, a forming fixed column arranged at the center of the disc base, a forming telescopic block A and a forming telescopic block B which can be stretched and contracted vertically to the disc base, an ejection block and an ejection rod which can be stretched and contracted vertically to the disc base, and a forming knife A, a forming knife J, a forming knife B, a forming knife C, a forming knife D, a forming knife E, a forming knife F, a forming knife G and a forming knife H which are sequentially connected to one side of the disc base in a sliding manner and can be driven by a power part to move for curling a formed wire rod forming spring clamp; a cutter part is also arranged between the forming cutter E and the forming cutter F; the flexible piece B of shaping is kept away from one side of the solid post of shaping be equipped with the shaping cambered surface A of first flexion cooperation, the flexible piece A of shaping is kept away from one side of the solid post of shaping be equipped with the shaping cambered surface B of third flexion cooperation.

Further, the stamping part comprises a stamping base, a base fixing plate, a stamping die plate, an insert fixing plate and a top plate which are sequentially arranged from bottom to top, the base fixing plate is fixed on the stamping base, the insert fixing plate is connected with a hydraulic cylinder through the top plate in a driving manner, insert bodies which can respectively penetrate through the base fixing plate and the stamping die plate are further fixed on the stamping base and the insert fixing plate, each insert body comprises a fixture block movable insert arranged on the insert fixing plate and a fixture block fixed insert arranged on the stamping base and matched with the fixture block movable insert, a through groove for the formed wire to pass through is further arranged between the base fixing plate and the stamping die plate, the hydraulic cylinder drives the insert fixing plate to move, so that the insert body which is relatively matched between the base fixing plate and the stamping die plate realizes the stamping of the formed wire in the through groove, and the fixture block fixing insert are relatively punched to form the wire rod, so that the fixture block can be formed.

Further, cutter portion is including cutting off the locating piece, cutting off the guide block and cutting off the sword, cut off the guide block with cut off the locating piece and fix on the disc base, the top that cuts off the guide block is equipped with the confession the channel that the shaping wire rod passes through, the vertical sliding connection in one side of cutting off the sword is in cut off on the locating piece, and its bottom be equipped with can cut off the interior vertical gliding extension guide part of guide block, its top is equipped with a slider, one side of shaping sword E be equipped with one with the guide way that slider sliding connection and slope set up, the cutting off sword orientation one side of channel still is equipped with a cutting edge, just still be equipped with one on the cutting off the guide block and be located the waste material passageway of cutting edge below.

Preferably, still be equipped with at least a set of left wire piece and the right wire piece that sets up relatively on the base fixed plate, just left side wire piece with be equipped with the confession between the right wire piece the clearance that the shaping wire rod passes through.

Preferably, a wire guide plate a is further arranged on the base fixing plate at the feeding end of the stamping part, a wire guide plate B is further arranged on the base fixing plate at the discharging end of the stamping part, and a gap channel through which the molded wire rod can pass is further arranged between the guide plate a and the base fixing plate as well as between the wire guide plate B and the base fixing plate.

Preferably, the molding telescopic block a, the molding telescopic block B, the ejection block and the ejection rod are all driven by a driving part on the other side of the disc base to be vertical to the disc base for stretching.

The forming method of the spring clamp based on the forming equipment comprises the following steps:

s1: placing a formed wire into a feeding groove of a feeding supporting block A, covering a feeding cover plate A on the upper feeding supporting block A, driving an ejection block and an ejection rod to retract into the disc base through an ejection telescopic rod, and resetting; then starting the feeding mechanism to push the formed wire to move along the feeding supporting block A, and after the formed wire is flattened by the flattening mechanism of the flattening machine, continuing to move towards the stamping part;

s2: after the forming wire in the step S1 is fed into the stamping part, the hydraulic cylinder can drive the top plate, the insert fixing plate and the insert body on the insert fixing plate through the piston rod to move towards the base fixing plate, at the moment, the forming wire can be formed through the matching of the fixture block moving insert and the fixture block fixing insert during stamping, a semi-finished stamping product is completed, and the completed semi-finished stamping product is fed into the bending part through the space between the feeding support block and the feeding cover plate B covered on the feeding support block;

s3: the power part drives the forming cutter H to move towards the center of the disc base along the positioning blocks A and F on the two sides of the forming cutter H, so that one end of the punched semi-finished product finished by the S2 is bent around the outer side surface of the forming telescopic block B, and the position is kept to pause; the forming cutter A can move towards the center along the side face of the positioning block A to push a bent forming wire to continue to form around the forming telescopic block B, the forming cutter A is reset after forming, the forming cutter A is far away from the center of the disc base, the forming cutter J is driven to move towards the center to push a forming plate to be completely attached to the forming telescopic block B, so that arc-shaped forming of the first bending part is completed, the forming telescopic block B is controlled to reset and retract into the disc base through the driving part to be separated from the first bending part, the forming cutter J is reset to be far away from the center to move, and the forming cutter H continues to move towards the center until the forming plate is completely attached to the outer surface of the forming solid column to be formed, and the forming cutter H keeps the current position;

s4: the forming cutter E moves along the side edge of the positioning block G, meanwhile, a guide groove on the forming cutter E obliquely pushes the cutting cutter to move downwards to cut off the formed wire, the tail structure of a previous product and the head structure of a next product can be formed simultaneously, and the forming cutter E resets after cutting off;

s5: the forming cutter F and the forming cutter G move towards the center simultaneously, one end of the formed wire cut in the S4 is pushed to be tightly attached to the outer surface of the forming telescopic block A, the forming cutter E is driven again to continue to move towards the center, the formed wire is pushed to be continuously tightly attached to the outer surface of the forming telescopic block A for forming, the forming of a third bending part is completed, then the forming cutter E, the forming cutter F and the forming cutter G move away from the center for resetting, the forming cutter E can drive the cutting cutter to reset upwards, and the driving part drives the forming telescopic block A to reset and retract into the disc base to be separated from the third bending part;

s6: the forming cutter G moves towards the center again, the third bending part formed in the S5 is pushed to be continuously bent and tightly attached to the outer surface of the forming fixed column, the forming cutter G is kept in the current state, and the forming cutter H moves towards the outer side far away from the center of the disc base and resets far away from the first bending part;

s7: the forming cutter D, the forming cutter C and the forming cutter B sequentially move towards the center, the third bending part formed in the S6 is pushed to further bend around the outer circle surface of the forming fixed column and is wrapped outside the first bending part;

s8: the outer side of the forming cutter B, which is far away from the center, moves to reset, the forming telescopic block B extends out of the disc base, pushes a fixture block, which is also arranged in a third bending part limiting clamp groove in a penetrating manner, on the product formed by the S to bend, and the fixture block is pressed on the outer side of the third bending part;

s9: the driving part drives the forming telescopic block B to retract into the disc base to reset, and after the forming cutter C, the forming cutter D and the forming cutter G are all far away from the center of the disc base to move outwards to reset, the driving part can drive the ejection block and the ejection rod to move leftwards simultaneously through the ejection connecting block by the ejection telescopic rod, so that a formed product is pushed to fall off, and the automatic blanking of the product is realized.

The invention has the beneficial effects that: the spring clamp is simple in structure and convenient to machine, the limiting structure with the clamping block matched with the limiting clamping groove can be integrally formed with the spring clamp, the machining is also convenient, the machining precision and the automation degree of machining through the forming equipment are also high, the process forming method is simple, and the production efficiency is high.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a formed wire of the present invention after stamping and before bending;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of the construction of the spring clip of the present invention;

FIG. 4 is a schematic view of the spring clip of the present invention after forming a first bend and a second bend;

FIG. 5 is a schematic view of the insert body as it is stamped;

FIG. 6 is a schematic structural view of the base fixing plate;

FIG. 7 is a structural sectional view of a punch;

FIG. 8 is a cross-sectional view of the section taken in the direction C-C of FIG. 7;

FIG. 9 is a schematic structural view of an apparatus for forming a spring clip according to the present invention;

FIG. 10 is a cross-sectional view taken along line A-A of FIG. 9;

FIG. 11 is a cross-sectional view taken in the direction B-B of FIG. 9;

FIG. 12 is a schematic view of the structure of the flexure;

fig. 13 is a partial enlarged view of portion D of fig. 12;

FIG. 14 is a schematic view showing the driving of the molding telescopic block B and the molding telescopic block A;

FIG. 15 is a schematic view of the drive of the ejector block and ejector rod;

FIG. 16 is a schematic view of the structure of the cutter portion;

FIG. 17 is a schematic view of the structure of the push rod 16 from another perspective;

FIG. 18 is a schematic view of the structure of the cutter portion during cutting;

FIG. 19 is a schematic view of the fixture movable insert and fixture fixed insert during stamping;

notation in the figure: 1. a disc base; 2. forming a cutter A; 3. forming a cutter B; 4. forming a cutter C; 5. forming a cutter D; 6. forming a cutter E; 7. forming a cutter F; 8. forming a cutter G; 9. forming a cutter H; 10. positioning a block A; 11. a first curved portion; 12. a second curved portion; 13. a third curved portion; 14. a clamping block; 15. a limiting clamping groove; 16. a clamp seat; 21. a clamping block movable insert; 22. clamping a block to fix the insert; 31. positioning a block F; 32. cutting off the positioning block; 33. cutting off the guide block; 34. a cutting knife; 35. ejecting a block; 36. forming a telescopic block A; 37. forming a solid column; 38. ejecting the rod; 39. forming a telescopic block B; 47. ejecting a connecting block; 48. ejecting the telescopic rod; 51. a feeding supporting block B; 52. a feeding cover plate B; 53. a leveling mechanism; 54. a feeding mechanism; 55. feeding a supporting block A; 56. a feeding cover plate A; 57. positioning a block G; 60. forming a cutter J; 101. stamping the base; 102. a base fixing plate; 103. punching a template; 104. an insert fixing plate; 105. a top plate; 108. a hydraulic cylinder; 114. a wire guide plate A; 115. a wire guide plate B; 116. a left lead block; 117. a right lead block; 999. and (5) forming the wire.

Detailed Description

As shown in fig. 1 to 19, in this embodiment, a spring clamp includes a formed wire 999 which is curled into a circular ring with two open ends, the formed wire 999 includes a first bending portion 11, a second bending portion 12 and a third bending portion 13 which are connected in sequence, the open end of the first bending portion 11 is wrapped inside the open end of the third bending portion 13, a clamping block 14 which protrudes outwards is arranged at the end where the first bending portion 11 is close to the second bending portion 12, a limiting clamping groove 15 which is matched with the clamping block 14 is arranged on the third bending portion 13, the groove width of the limiting clamping groove is larger than the width of the clamping block which extends into the third bending portion, and the third bending portion 13 further includes a clamp seat 16 which protrudes outwards.

The forming equipment based on the spring hoop comprises a feeding support block A55, a feeding support block B51, a stamping part and a bending part, wherein the feeding support block A55 is connected to the feeding end of the stamping part, and the feeding support block B51 is arranged between the discharging end of the stamping part and the feeding end of the bending part;

the bending part comprises a disc base 1, a forming fixing column 37 arranged at the center of the disc base 1, a forming telescopic block A36 and a forming telescopic block B39 which can be vertical to the disc base 1 for extension, an ejection block 35 and an ejection rod 38 which can be vertical to the disc base 1 for extension, and a forming knife A2, a forming knife J60, a forming knife B3, a forming knife C4, a forming knife D5, a forming knife E6, a forming knife F7, a forming knife G8 and a forming knife H9 which are sequentially annularly arranged on one side of the disc base 1 in a sliding mode and can move under the driving of a power part and are used for curling a forming spring clamp of a forming wire 999;

a cutter part is arranged between the forming cutter E6 and the forming cutter F7;

one side of the molding telescopic block B39, which is far away from the molding fixed column 37, is provided with a molding arc surface A which is matched and molded with the first bending part 11, and one side of the molding telescopic block A36, which is far away from the molding fixed column 37, is provided with a molding arc surface B which is matched and molded with the third bending part 13.

The stamping part comprises a stamping base 101, a base fixing plate 102, a stamping template 103, an insert fixing plate 104 and a top plate 105 which are sequentially arranged from bottom to top, the base fixing plate 102 is fixed on the stamping base 101, the insert fixing plate 104 is connected with a hydraulic cylinder 108 in a driving way through the top plate 105, insert bodies which can respectively penetrate through the base fixing plate 102 and the stamping template 103 are further fixed on the stamping base 101 and the insert fixing plate 104, each insert body comprises a fixture block movable insert 21 arranged on the insert fixing plate 104 and a fixture block fixed insert 22 arranged on the stamping base 101 and matched with the fixture block movable insert 21, a through groove for a molding wire 999 to pass through is further arranged between the base fixing plate and the stamping template 103, and the hydraulic cylinder drives the insert fixing plate to move, the relative matched insert body between the base fixing plate and the die plate realizes the stamping of the formed wire rod in the groove, and the fixture block fixed insert punch-formed wire rod can form a fixture block.

The cutter portion is including cutting off locating piece 32, cut off guide block 33 and cutting off cutter 34, cut off guide block 33 and cut off locating piece 32 and fix on disc base 1, the top of cutting off guide block 33 is equipped with the channel that supplies shaping wire rod 999 to pass through, the vertical sliding connection in one side of cutting off cutter 34 is on cutting off locating piece 32, and its bottom is equipped with the extension guide part that can be in cutting off guide block 33 vertical slip, its top is equipped with a slider, one side of shaping cutter E6 is equipped with one and the guide way of slider sliding connection and slope setting, one side of cutting off cutter 34 towards the channel still is equipped with a cutting edge, and still be equipped with a waste material passageway that is located the cutting edge below on the cutting off guide block 33.

At least one group of left and right lead blocks 116 and 117 are oppositely arranged on the base fixing plate 102, and a gap for the formed wire 999 to pass through is arranged between the left and right lead blocks 116 and 117.

A wire guide plate A114 is further arranged on the base fixing plate 102 at the feeding end of the stamping part, a wire guide plate B115 is further arranged on the base fixing plate 102 at the discharging end of the stamping part, and a gap channel for a formed wire 999 to pass through is further arranged between the guide plate A, the wire guide plate B115 and the base fixing plate 102.

The molding telescopic block A36, the molding telescopic block B39, the ejection block 35 and the ejection rod 38 can be driven by a driving part on the other side of the disc base 1 to stretch and retract vertically to the disc base 1, and the power part and the driving part in the embodiment both adopt a power structure that a servo motor controls the rotation motion of a cam mechanism to be converted into linear motion.

The forming method of the spring clamp based on the forming equipment comprises the following steps:

s1: placing the formed wire into a feeding groove of a feeding supporting block A55, covering a feeding cover plate A56 on an upper feeding supporting block A55, driving an ejection block 35 and an ejection rod 38 to retract into the disc base through an ejection telescopic rod 48, and resetting; then starting the feeding mechanism 54, intermittently pushing the formed wire rod to move along the feeding supporting block A55 according to a fixed length, and continuously moving towards the punching part after the formed wire rod is flattened by the flattening mechanism 53 of the flattening machine;

s2: after the molding wire in S1 is fed into the stamping part, the hydraulic cylinder may drive the insert bodies on the top plate 105, the insert fixing plate 104, and the insert fixing plate 104 through the piston rod, and move toward the base fixing plate 102, at this time, the molding of the molding wire 999 may be completed through the cooperation of the fixture block moving insert and the fixture block fixing insert while stamping, and the stamping semi-finished product may be fed into the bending part through the feeding support block and the feeding cover plate B52 covering the feeding support block;

s3: the power part drives the forming knife H9 to move towards the center of the disc base along the positioning block A10 and the positioning block F31 on the two sides of the forming knife H9, so that one end of the punched semi-finished product finished by the S2 is bent around the outer side surface of the forming telescopic block B39, and the position is kept paused; further, the forming knife A2 can move towards the center along the side face of the positioning block A10 to push the bent forming wire to continue to form around the forming telescopic block B39, and the forming knife A2 is reset after forming, so that the forming knife A2 is far away from the center of the disc base, further the forming knife J60 is driven to move towards the center, the formed plate is pushed to be completely attached to the forming telescopic block B39, so that the arc-shaped forming of the first bending part is completed, the forming telescopic block B39 is controlled to reset and retract into the disc base through the driving part to be separated from the first bending part, the forming knife J60 is reset to be moved far away from the center, and the forming knife H9 is continuously moved towards the center until the formed plate is completely attached to the outer surface of the forming fixing column 37 for forming, and the forming knife H9 keeps;

s4: the forming cutter E6 moves along the side edge of the positioning block G57, meanwhile, the guide groove on the forming cutter E6 obliquely pushes the cutting cutter 34 to move downwards to cut off the formed wire 999, the tail structure of the former product and the head structure of the latter product can be formed simultaneously, and the forming cutter E6 resets after cutting off;

s5: the forming cutter F7 and the forming cutter G8 move towards the center at the same time, one end of a formed wire rod cut off in S4 is pushed to be tightly attached to the outer surface of the forming telescopic block A36, the forming cutter E6 is driven to continuously move towards the center again, the formed wire rod 999 is pushed to be continuously tightly attached to the outer surface of the forming telescopic block A36 for forming, the forming of a third bending part is completed, then the forming cutter E6, the forming cutter F7 and the forming cutter G8 move away from the center for resetting, the forming cutter E6 can drive the cutting cutter 34 to reset upwards, and the driving part drives the forming telescopic block A36 to reset and retract into the disc base to be separated from the third bending part;

s6: the forming knife G8 moves towards the center again, the third bending part formed by the S5 is pushed to continuously bend and cling to the outer surface of the forming fixed column 37, the forming knife G8 is kept in the current state, and the forming knife H9 moves towards the outer side far away from the center of the disc base and resets far away from the first bending part;

s7: the forming knife D5, the forming knife C4 and the forming knife B3 sequentially move towards the center, and the third bending part formed by the S6 is pushed to further bend around the outer circle surface of the forming fixed column 37 and is wrapped outside the first bending part;

s8: the outer side of the forming cutter B3, which is far away from the center, moves to reset, the forming telescopic block B39 extends out of the disc base, and a fixture block 14, which is also arranged in a limiting clamp groove of a third bending part in a penetrating manner, is pushed to bend the product formed by the S7 and is pressed on the outer side of the third bending part;

s9: the driving part drives the forming telescopic block B39 to retract into the disc base to reset, and after the forming knife C4, the forming knife D5 and the forming knife G8 are all far away from the center of the disc base to move outwards to reset, the driving part can drive the ejection block 35 and the ejection rod 38 to move leftwards simultaneously through the ejection connecting block 47 by the ejection telescopic rod 48, so that the formed product is pushed to fall off, and the automatic blanking of the product is realized.

The working principle of the invention is as follows: the spring clamp is simple in structure and convenient to machine, the limiting structure with the clamping block matched with the limiting clamping groove can be integrally formed with the spring clamp, the machining is also convenient, the machining precision and the automation degree of machining through the forming equipment are also high, the process forming method is simple, and the production efficiency is high.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a spring clamp which characterized in that, is including the shaping wire rod of curling into open ring in both ends, the shaping wire rod includes first flexion, second flexion and the third flexion that connects mutually in order, the open end package of first flexion is established the inboard of third flexion open end, just first flexion be close to with second flexion end connection end is equipped with outside bellied fixture block, the third flexion be equipped with fixture block complex spacing draw-in groove, just the third flexion still includes an outside bellied fixture block seat.

2. The forming device of a spring clamp according to claim 1, comprising a feeding support block a, a feeding support block B, a stamping part and a bending part, wherein the feeding support block a is connected to a feeding end of the stamping part, and the feeding support block B is arranged between a discharging end of the stamping part and a feeding end of the bending part;

the bending part comprises a disc base, a forming fixed column arranged at the center of the disc base, a forming telescopic block A and a forming telescopic block B which can be stretched and contracted vertically to the disc base, an ejection block and an ejection rod which can be stretched and contracted vertically to the disc base, and a forming knife A, a forming knife J, a forming knife B, a forming knife C, a forming knife D, a forming knife E, a forming knife F, a forming knife G and a forming knife H which are sequentially connected to one side of the disc base in a sliding manner and can be driven by a power part to move for curling a formed wire rod forming spring clamp;

a cutter part is also arranged between the forming cutter E and the forming cutter F;

the flexible piece B of shaping is kept away from one side of the solid post of shaping be equipped with the shaping cambered surface A of first flexion cooperation, the flexible piece A of shaping is kept away from one side of the solid post of shaping be equipped with the shaping cambered surface B of third flexion cooperation.

3. The forming apparatus of a spring clamp according to claim 2, wherein the stamping portion includes a stamping base, a base fixing plate, a stamping die plate, an insert fixing plate and a top plate sequentially arranged from bottom to top, the base fixing plate is fixed on the stamping base, the insert fixing plate is drivingly connected to the hydraulic cylinder through the top plate, insert bodies capable of passing through the base fixing plate and the stamping die plate respectively are further fixed on the stamping base and the insert fixing plate, the insert body includes a fixture block movable insert arranged on the insert fixing plate and a fixture block fixed insert arranged on the stamping base and engaged with the fixture block movable insert, a passage groove for the passage of the forming wire rod is further provided between the base fixing plate and the stamping die plate, and the hydraulic cylinder drives the insert fixing plate to move, the insert body which is matched relatively between the base fixing plate and the die plate realizes the stamping of the formed wire passing through the groove, and the fixture block fixing insert can form the fixture block relatively to the punch formed wire.

4. The forming device of a spring clamp according to claim 3, wherein the cutter portion includes a cutting-off positioning block, a cutting-off guiding block and a cutting-off cutter, the cutting-off guiding block and the cutting-off positioning block are fixed on the disc base, a channel for the formed wire to pass through is arranged at the top of the cutting-off guiding block, one side of the cutting-off cutter is vertically slidably connected to the cutting-off positioning block, an extending guiding portion capable of vertically sliding in the cutting-off guiding block is arranged at the bottom of the cutting-off cutter, a sliding block is arranged at the top of the cutting-off guiding block, a guiding groove which is slidably connected with the sliding block and is obliquely arranged is arranged at one side of the forming cutter E, a cutting edge is further arranged at one side of the channel facing the cutting-off cutter, and a waste passage located below the cutting edge is further arranged on the.

5. The apparatus of claim 4, wherein the base fixing plate further comprises at least one pair of left and right lead blocks disposed opposite to each other, and a gap is formed between the left and right lead blocks for passing the forming wire.

6. The apparatus of claim 4, wherein a wire guide plate A is further disposed on the base fixing plate at the feeding end of the stamping portion, a wire guide plate B is further disposed on the base fixing plate at the discharging end of the stamping portion, and a gap passage for the molded wire to pass through is further disposed between the guide plate A and the base fixing plate and between the wire guide plate B and the base fixing plate.

7. The apparatus of claim 4, wherein the telescoping block A, the telescoping block B, the ejector block and the ejector rod are driven by a drive member on the other side of the base to extend and retract vertically relative to the base.

8. The method of forming a spring band of a forming apparatus according to any one of claims 4-7, comprising the steps of:

s1: placing a formed wire into a feeding groove of a feeding supporting block A, covering a feeding cover plate A on the upper feeding supporting block A, driving an ejection block and an ejection rod to retract into the disc base through an ejection telescopic rod, and resetting; then starting the feeding mechanism to push the formed wire to move along the feeding supporting block A, and after the formed wire is flattened by the flattening mechanism of the flattening machine, continuing to move towards the stamping part;

s2: after the forming wire in the step S1 is fed into the stamping part, the hydraulic cylinder can drive the top plate, the insert fixing plate and the insert body on the insert fixing plate through the piston rod to move towards the base fixing plate, at the moment, the forming wire can be formed through the matching of the fixture block moving insert and the fixture block fixing insert during stamping, a semi-finished stamping product is completed, and the completed semi-finished stamping product is fed into the bending part through the space between the feeding support block and the feeding cover plate B covered on the feeding support block;

s3: the power part drives the forming cutter H to move towards the center of the disc base along the positioning blocks A and F on the two sides of the forming cutter H, so that one end of the punched semi-finished product finished by the S2 is bent around the outer side surface of the forming telescopic block B, and the position is kept to pause; the forming cutter A can move towards the center along the side face of the positioning block A to push a bent forming wire to continue to form around the forming telescopic block B, the forming cutter A is reset after forming, the forming cutter A is far away from the center of the disc base, the forming cutter J is driven to move towards the center to push a forming plate to be completely attached to the forming telescopic block B, so that arc-shaped forming of the first bending part is completed, the forming telescopic block B is controlled to reset and retract into the disc base through the driving part to be separated from the first bending part, the forming cutter J is reset to be far away from the center to move, and the forming cutter H continues to move towards the center until the forming plate is completely attached to the outer surface of the forming solid column to be formed, and the forming cutter H keeps the current position;

s4: the forming cutter E moves along the side edge of the positioning block G, meanwhile, a guide groove on the forming cutter E obliquely pushes the cutting cutter to move downwards to cut off the formed wire, the tail structure of a previous product and the head structure of a next product can be formed simultaneously, and the forming cutter E resets after cutting off;

s5: the forming cutter F and the forming cutter G move towards the center simultaneously, one end of the formed wire cut in the S4 is pushed to be tightly attached to the outer surface of the forming telescopic block A, the forming cutter E is driven to continuously move towards the center again, the formed wire is pushed to be continuously tightly attached to the outer surface of the forming telescopic block A for forming, the forming of a third bending part is completed, then the forming cutter E, the forming cutter F and the forming cutter G move away from the center for resetting, the forming cutter E can drive the cutting cutter to reset upwards, and the driving part drives the forming telescopic block A to reset and retract into the disc base to be separated from the third bending part;

s6: the forming cutter G moves towards the center again, the third bending part formed in the S5 is pushed to be continuously bent and tightly attached to the outer surface of the forming fixed column, the forming cutter G is kept in the current state, and the forming cutter H moves towards the outer side far away from the center of the disc base and resets far away from the first bending part;

s7: the forming cutter D, the forming cutter C and the forming cutter B sequentially move towards the center, the third bending part formed in the S6 is pushed to further bend around the outer circle surface of the forming fixed column and is wrapped outside the first bending part;

s8: the outer side of the forming cutter B, which is far away from the center, moves to reset, the forming telescopic block B extends out of the disc base, pushes the clamping block, which is also arranged in the limiting clamping groove of the third bending part in a penetrating manner, on the product formed in the S7 to bend, and the clamping block is pressed on the outer side of the third bending part;

s9: the driving part drives the forming telescopic block B to retract into the disc base to reset, and after the forming cutter C, the forming cutter D and the forming cutter G are all far away from the center of the disc base to move outwards to reset, the driving part can drive the ejection block and the ejection rod to move leftwards simultaneously through the ejection connecting block by the ejection telescopic rod, so that a formed product is pushed to fall off, and the automatic blanking of the product is realized.

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