CN110918735A

CN110918735A - Automatic forming device for end part of leaf spring

Info

Publication number: CN110918735A
Application number: CN201910968264.9A
Authority: CN
Inventors: 李庆; 吴亚兰; 胡如方; 陈露; 王志伟; 朱稚华
Original assignee: Anhui Technical College of Mechanical and Electrical Engineering
Current assignee: Anhui Technical College of Mechanical and Electrical Engineering
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-03-27
Anticipated expiration: 2039-10-12
Also published as: CN110918735B

Abstract

The invention relates to the technical field of automobile part processing, in particular to an automatic forming device for a steel plate spring end part, which comprises a feeding cylinder, forming rollers, a positioning jig and a stamping mechanism, wherein the feeding cylinder is arranged in an inverted manner through a supporting beam, an output shaft of the feeding cylinder is provided with a fixed block, the positioning jig can be horizontally and movably arranged on the front side of the fixed block through a driving mechanism, the bottom of the fixed block is provided with a pressing mechanism, the front side of the positioning jig is provided with a plurality of material placing grooves with arc structures, a rotating assembly is arranged below the positioning jig, a plurality of forming rollers are arranged and are equidistantly distributed on the front side of the rotating assembly in the circumferential direction of the rotating assembly, a stroke cylinder is arranged beside the rotating assembly, a piston shaft of the stroke cylinder is provided with a push rod, the push rod can correspond to all the forming rollers one by one, the stamping mechanism is arranged, the invention can greatly reduce the labor intensity and reduce the use cost of personnel.

Description

Automatic forming device for end part of leaf spring

Technical Field

The invention relates to the technical field of automobile part processing, in particular to an automatic forming device for an end part of a steel plate spring.

Background

The steel plate spring is an elastic element which is most widely applied in automobile suspensions, and is an elastic beam with approximate equal strength formed by combining a plurality of alloy spring pieces with equal width but unequal length (the thicknesses can be equal or unequal).

Two ends of the longest steel plate spring in each group of elastic beams need to be curled for subsequent driving into a rotating shaft; in the end curling process of the steel plate spring, at present, most of the existing methods adopt a clamp to position one end of the steel plate spring, and the other end is placed into a curling device for operation and circulated; the mode is large in physical consumption, and the temperature of the curled leaf springs is very high, so that the temperature of a processing site is high, the manual labor intensity is high, and the labor cost is too high due to phase change.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an automatic forming device for the end part of a leaf spring.

The invention discloses an automatic forming device for the end part of a steel plate spring, which comprises a feeding cylinder, forming rollers, a positioning jig and a stamping mechanism, wherein the feeding cylinder is arranged in an inverted posture through a supporting beam, a fixing block is arranged on an output shaft of the feeding cylinder, the positioning jig can be horizontally and movably arranged on the front side of the fixing block through a driving mechanism, a pressing mechanism is arranged at the bottom of the fixing block, a plurality of material accommodating grooves are arranged on the front side of the positioning jig, the widths of all the material accommodating grooves are different, the material accommodating grooves are of an arc-shaped structure, a rotating assembly is arranged below the positioning jig, a plurality of forming rollers are arranged and are sequentially distributed on the front side of the rotating assembly at equal intervals in the circumferential direction of the rotating assembly, the outer diameters of all the forming rollers are sequentially changed from thin to thick in the circumferential direction of the rotating assembly, stroke cylinders are arranged beside the rotating assembly, push rods are arranged on piston shafts of the, the stamping mechanism is located below the positioning jig and is arranged right opposite to the stroke cylinder.

Further, the driving mechanism comprises a lead screw, a nut block and a rotating handle, the lead screw is horizontally arranged at the bottom of the fixed block in a shaft coupling mode, the axial direction of the lead screw and the output direction of the feeding cylinder form a cross shape, the nut block is sleeved on the lead screw and in transmission fit with the lead screw, the nut block is fixedly connected with the positioning jig, and the rotating handle is fixedly sleeved at one end of the lead screw.

Further, all material placing grooves are distributed along the axial direction of the screw rod at equal intervals, the material placing grooves are vertically arranged on the positioning jig, and the two ends of the material placing grooves penetrate through the top and the bottom of the positioning jig respectively.

Furthermore, the groove depth of the material placing groove is half of the width of the steel plate spring, and the positioning jig is made of elastic materials.

Further, hold-down mechanism includes the sideslip cylinder, compresses tightly cylinder and clamp plate, and the sideslip cylinder is the level and sets up in the bottom of fixed block, and the output direction of sideslip cylinder and the output direction of pay-off jar constitute the cross, and the cylinder body that compresses tightly the cylinder is connected with the piston shaft of sideslip cylinder, and the clamp plate is located the front side of positioning jig, and the one end of clamp plate and the output shaft fixed connection who compresses tightly the cylinder, through compressing tightly the cylinder drive clamp plate can be to positioning jig footpath directly being close to or keeping away from.

Further, rotating assembly includes the motor, disc and pivot, the disc is vertical below of setting at the fixed block through the pivot, the motor is located the dorsal part of disc, the output shaft of motor is connected with the pivot, set up a plurality of circumference equidistance along it and distribute on the disc through-hole, the through-hole runs through the disc setting, all shaping rollers pass through the disc through a through-hole respectively, every shaping roller is located the dorsal pot head of disc all the time and is equipped with the spring spacer, the outside of every shaping roller all is equipped with a reset spring, every reset spring all is located between the spring spacer and the disc that correspond with it.

Further, the output direction of the stroke cylinder is parallel to the axial direction of the forming roller, the stroke cylinder is in a normal state, the push rod is located in an end area, provided with the spring gasket, of the forming roller, and the axis of the push rod can be always overlapped with the axis of one forming roller.

Further, punching press mechanism includes the same first stamping workpiece of structure and second stamping workpiece, and first stamping workpiece is the level and sets up in positioning jig's below one side, and the second stamping workpiece is the slope and sets up the below opposite side at positioning jig, and the punching press end tilt up of second stamping workpiece, and the punching press end of first stamping workpiece is just to the second stamping workpiece, and the push rod is in all the time between the punching press end of first stamping workpiece and second stamping workpiece.

Furthermore, the first stamping part comprises a stamping cylinder, a stamping roller and an adjusting cylinder, the stamping roller is fixedly arranged on a piston shaft of the stamping cylinder and forms a stamping end of the first stamping part, the axial direction of the stamping roller is parallel to the axial direction of the forming roller, the adjusting cylinder is arranged above the stamping cylinder in an inverted mode, the piston shaft of the adjusting cylinder is connected with a cylinder body of the stamping cylinder, and the output directions of the piston shaft and the cylinder body are perpendicular.

Has the advantages that: according to the automatic forming device for the end part of the steel plate spring, when the end parts of different batches of steel plate springs need to be curled, a lead screw is driven to rotate manually through a rotating handle, so that a nut block is forced to generate axial displacement, and a positioning jig is driven to displace, so that a certain material placing groove is displaced, and the material placing groove is displaced to be right above a corresponding stroke cylinder; the thicknesses of the leaf springs in each batch are different, so that material placing grooves with different groove widths are required to be matched; the inner diameters of the curled edges of the steel plate springs with different specifications or the same specification are different, in order to adapt to the curled edges with different inner diameters, the motor can drive the rotating shaft to rotate, so that the disc drives all the forming rollers to rotate, the outer diameter of each forming roller is recorded in advance, when a certain forming roller is needed, the forming roller is rotated to a position opposite to a piston shaft of the stroke cylinder through the motor to stop, then the piston shaft of the stroke cylinder works, so that the push rod is abutted against the end part of the forming roller, the forming roller is pressed to extrude the return spring corresponding to the forming roller to shrink, and in the shrinking process, other parts of the forming roller continuously displace in the front side direction of the disc until the forming roller displaces to a curled edge forming area, namely the forming roller stops in a working area of the punching mechanism; then the feeding cylinder drives the fixed block and the positioning jig to descend so as to meet the feeding and positioning of the steel plate springs with different arc lengths, then the manipulator delivers the single steel plate spring to a material placing groove which is arranged right above the stroke cylinder in a vertical posture, the depth of the material placing groove is 1/2 of the width of the steel plate spring, the aim is to ensure that the manipulator can well send the steel plate spring into the material placing groove, in the feeding process, the manipulator can not contact with the positioning jig, because the manipulator can only clamp the 1/2 area of the steel plate spring, before the steel plate spring is placed into the material placing groove, the transverse moving cylinder can drive the pressing cylinder to drive the pressing plate to translate, so that the pressing plate is not in the area right facing the positioning jig, and the pressing cylinder also works, so that the pressing plate has a certain spacing distance from the positioning jig, then after the steel plate spring is placed into the material placing groove, the transverse moving cylinder drives the pressing cylinder and the pressing plate to reset, so that the pressing plate is opposite to the positioning jig, then the pressing cylinder works, the pressing plate is directly close to the positioning jig, the inner side surface of the pressing plate is in contact with the side portion of the steel plate spring, and the steel plate spring is prevented from jumping out of the material placing groove; because the outer diameters of the forming rollers are different, after different forming rollers are replaced, the adjusting cylinder can drive the stamping cylinder to drive the stamping roller to displace, so that the stamping roller can be displaced to adapt to the outer edge area of a new forming roller; after the lower end of the steel plate spring reaches the peripheral surface area of the forming roller, the stamping cylinder can drive the stamping roller to displace, the stamping roller abuts against the end part of the steel plate spring and passes through the outer part of the forming roller, so that the end part of the steel plate spring is attached to the outer surface of the forming roller and is stamped and bent, then the working steps of the second stamping part are consistent with those of the first stamping part, and the end part of the steel plate spring is subjected to edge curling operation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic plan view of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a first perspective view of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at B;

FIG. 5 is a schematic perspective view of the present invention;

FIG. 6 is an enlarged view of FIG. 5 at C;

FIG. 7 is an enlarged view of FIG. 5 at D;

FIG. 8 is a third schematic perspective view of the present invention;

FIG. 9 is an enlarged view at E of FIG. 8;

FIG. 10 is a partial perspective view of the present invention;

description of reference numerals:the feeding cylinder 1, the supporting beam 111 and the fixing block 112.

A transverse moving cylinder 2, a pressing cylinder 211 and a pressing plate 212.

The lead screw 3, the nut block 311 and the knob 312.

And a forming roller 4.

A positioning jig 5 and a material placing groove 511.

Motor 6, disc 611, shaft 612, spring washer 613, return spring 614.

A first punch 7, a punch cylinder 711, a punch roller 712, and a pilot cylinder 713.

And a second stamping 8.

Stroke cylinder 9, push rod 911.

A leaf spring 10.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 10, an automatic forming device for an end portion of a leaf spring 10 comprises a feeding cylinder 1, forming rollers 4, a positioning jig 5 and a stamping mechanism, wherein the feeding cylinder 1 is arranged in an inverted posture through a supporting beam 111, an output shaft of the feeding cylinder 1 is provided with a fixing block 112, the positioning jig 5 is horizontally and movably arranged on the front side of the fixing block 112 through a driving mechanism, the bottom of the fixing block 112 is provided with a pressing mechanism, the front side of the positioning jig 5 is provided with a plurality of material accommodating grooves 511, the width of all the material accommodating grooves 511 is different, the material accommodating grooves 511 are of an arc structure, a rotating assembly is arranged below the positioning jig 5, the number of the forming rollers 4 is multiple, the forming rollers are sequentially distributed on the front side of the rotating assembly at equal intervals around the circumferential direction of the rotating assembly, the outer diameters of all the forming rollers 4 are sequentially changed from thin to thick along the circumferential direction of the rotating assembly, and a push rod 911 is arranged on a piston shaft of the stroke cylinder 9, the push rod 911 can correspond to all the forming rollers 4 one by one, and the stamping mechanism is positioned below the positioning jig 5 and is arranged opposite to the stroke cylinder 9.

The driving mechanism comprises a screw rod 3, a nut block 311 and a knob 312, the screw rod 3 is horizontally arranged at the bottom of the fixed block 112 in a shaft coupling manner, the axial direction of the screw rod 3 and the output direction of the feeding cylinder 1 form a cross shape, the nut block 311 is sleeved on the screw rod 3 and is in transmission fit with the screw rod 3, the nut block 311 is fixedly connected with the positioning jig 5, and the knob 312 is fixedly sleeved at one end of the screw rod 3; when the end parts of the steel plate springs 10 in different batches need to be curled, the screw rod 3 is driven to rotate manually through the rotating handle 312, so that the nut block 311 is forced to generate axial displacement, the positioning jig 5 is driven to displace, and a certain material placing groove 511 is displaced, so that the material placing groove 511 is displaced to be right above the corresponding stroke cylinder 9; the thickness of the leaf springs 10 is different from batch to batch, so that the material accommodating grooves 511 with different groove widths are needed for matching.

All the material placing grooves 511 are distributed at equal intervals along the axial direction of the screw rod 3, the material placing grooves 511 are vertically arranged on the positioning jig 5, and two ends of the material placing grooves 511 respectively penetrate through the top and the bottom of the positioning jig 5; the arc-shaped material placing groove 511 is used for placing the steel plate spring 10, and the arc-shaped material placing groove 511 prevents the steel plate spring 10 from moving in the vertical direction after being placed in the material placing groove 511, so that the stability after material loading is ensured.

The groove depth of the material placing groove 511 is half of the width of the steel plate spring 10, and the positioning jig 5 is made of elastic materials; the depth of the material placing groove 511 is 1/2 the width of the steel plate spring 10, so as to ensure that a manipulator can well feed the steel plate spring 10 into the material placing groove 511, and the manipulator does not contact with the positioning jig 5 in the feeding process, because the manipulator can only clamp the 1/2 area of the steel plate spring 10.

The pressing mechanism comprises a transverse moving cylinder 2, a pressing cylinder 211 and a pressing plate 212, the transverse moving cylinder 2 is horizontally arranged at the bottom of the fixing block 112, the output direction of the transverse moving cylinder 2 and the output direction of the feeding cylinder 1 form a cross shape, the cylinder body of the pressing cylinder 211 is connected with the piston shaft of the transverse moving cylinder 2, the pressing plate 212 is positioned at the front side of the positioning jig 5, one end of the pressing plate 212 is fixedly connected with the output shaft of the pressing cylinder 211, and the pressing plate 212 is driven by the pressing cylinder 211 to be capable of directly approaching or leaving the positioning jig 5; before putting into the silo 511 at steel sheet spring 10, sideslip cylinder 2 can drive and compress tightly cylinder 211 and take the pressure strip to take place the translation, make the pressure strip not be in the region just to positioning jig 5, and compress tightly cylinder 211 also works, make clamp plate 212 have certain spacing distance apart from positioning jig 5, then treat that steel sheet spring 10 puts into put the silo 511 after, sideslip cylinder 2 can drive and compress tightly cylinder 211 and clamp plate 212 and reset, make clamp plate 212 just to positioning jig 5, then compress tightly cylinder 211 work, make clamp plate 212 to positioning jig 5 straight being close to, make the contact of the inboard side of clamp plate 212 and the contact of the lateral part of steel sheet spring 10, and then prevent that steel sheet spring 10 from scurrying out and put the silo 511 outside.

The rotating assembly comprises a motor 6, a disc 611 and a rotating shaft 612, the disc 611 is vertically arranged below the fixed block 112 through the rotating shaft 612, the motor 6 is located on the back side of the disc 611, an output shaft of the motor 6 is connected with the rotating shaft 612, a plurality of through holes are formed in the disc 611 and are distributed at equal intervals along the circumferential direction of the disc, the through holes penetrate through the disc 611, all the forming rollers 4 respectively penetrate through the disc 611 through one through hole, one end, located on the back side of the disc 611, of each forming roller 4 is sleeved with a spring gasket 613, a return spring 614 is sleeved outside each forming roller 4, and each return spring 614 is located between the corresponding spring gasket 613 and the disc 611; the inside diameters of the curled edges of the leaf springs 10 of different specifications or the same specification are different, in order to adapt to the curled edges of different inside diameters, the motor 6 drives the rotating shaft 612 to rotate, so that the disc 611 drives all the forming rollers 4 to rotate, the outside diameter of each forming roller 4 is recorded in advance, when a certain forming roller 4 is needed, the forming roller is rotated to a position opposite to the piston shaft of the stroke cylinder 9 through the motor 6 and stopped, then the piston shaft of the stroke cylinder 9 works, the push rod 911 is made to abut against the end part of the forming roller 4, the forming roller 4 is pressed to press the return spring 614 corresponding to the forming roller 4 to shrink, in the shrinking process, other parts of the forming roller 4 continuously displace in the front side direction of the disc 611 until the forming roller is displaced to the curled edge forming area and stopped, namely the working area of the punching mechanism, when the forming roller 4 is not needed, the stroke cylinder 9 is reset and the forming roller 4 is displaced by means of the return spring 614 in order to leave the working area of the press.

The output direction of the stroke cylinder 9 is parallel to the axial direction of the forming roller 4, the stroke cylinder 9 is in a normal state, the push rod 911 is positioned in the area of one end of the forming roller 4 provided with the spring gasket 613, and the axial line of the push rod 911 can be always coincident with the axial line of one forming roller 4; because the piston shaft of the stroke cylinder 9 is positioned at one end of the forming roller 4 provided with the spring gasket 613 under the normal state, all the forming rollers 4 are not influenced to rotate in a stepping mode by virtue of the circular disc 611; after the rotation is finished, the piston shaft of the stroke cylinder 9 works, and the forming roller 4 opposite to the piston shaft is pushed to generate axial displacement, so that the forming roller reaches the working area of the punching mechanism.

The punching mechanism comprises a first punching part 7 and a second punching part 8 which are identical in structure, the first punching part 7 is horizontally arranged on one side below the positioning jig 5, the second punching part 8 is obliquely arranged on the other side below the positioning jig 5, the punching end of the second punching part 8 is upward oblique, the punching end of the first punching part 7 is right opposite to the second punching part 8, and the push rod 911 is always positioned between the punching ends of the first punching part 7 and the second punching part 8; when the stroke cylinder 9 works, the front end of the forming roller 4 corresponding to the stroke cylinder is pushed to reach a position between the first stamping part 7 and the second stamping part 8, a curling working area is formed between the first stamping part 7 and the second stamping part 8, then the feeding cylinder 1 drives the fixing block 112 and the positioning jig 5 to descend, so that the feeding of the steel plate spring 10 with different arc lengths is matched, after the steel plate spring 10 is fed into the material placing groove 511 by the manipulator (only the material placing groove 511 directly above the stroke cylinder 9), the lower end of the steel plate spring 10 is located in the peripheral surface area of the forming roller 4, then the first stamping part 7 and the second stamping part 8 start working in sequence, and the curling operation is carried out on the steel plate spring 10 located on the peripheral surface of the forming roller 4 by means of the forming roller 4 between the first stamping part 7 and the second stamping part 8.

The first stamping part 7 comprises a stamping cylinder 711, a stamping roller 712 and an adjusting cylinder 713, wherein the stamping roller 712 is fixedly arranged on a piston shaft of the stamping cylinder 711 and forms a stamping end of the first stamping part 7, the axial direction of the stamping roller 712 is parallel to the axial direction of the forming roller 4, the adjusting cylinder 713 is arranged above the stamping cylinder 711 in an inverted manner, the piston shaft of the adjusting cylinder 713 is connected with a cylinder body of the stamping cylinder 711, and the output directions of the piston shaft and the cylinder are vertical; because the outer diameters of the forming rollers 4 are different, after different forming rollers 4 are replaced, the adjusting cylinder 713 drives the stamping cylinder 711 to drive the stamping roller 712 to displace, so that the stamping roller 712 is displaced to adapt to the outer edge area of a new forming roller 4; after the lower end of the leaf spring 10 reaches the peripheral surface area of the forming roller 4, the punching cylinder 711 drives the punching roller 712 to displace, so as to abut against the end portion of the leaf spring 10 and pass through the forming roller 4 from the outside, so that the end portion of the leaf spring 10 is attached to the outer surface of the forming roller 4 and is punched and bent, and then the working step of the second punching part 8 is consistent with that of the first punching part 7, so that the end portion of the leaf spring 10 is curled.

The working principle is as follows: when the end parts of the leaf springs 10 in different batches need to be curled, the lead screw 3 is manually driven to rotate through the rotating handle 312, so that the nut block 311 is forced to axially displace, the positioning jig 5 is driven to displace, and a certain material placing groove 511 is displaced, so that the material placing groove 511 is displaced to be right above the corresponding stroke cylinder 9; the thicknesses of the leaf springs 10 in each batch are different, so that the material accommodating grooves 511 with different groove widths are needed for matching; the inside diameters of the curled edges of the leaf springs 10 of different specifications or the same specification are different, in order to adapt to the curled edges of different inside diameters, the motor 6 drives the rotating shaft 612 to rotate, so that the disc 611 drives all the forming rollers 4 to rotate, the outside diameter of each forming roller 4 is recorded in advance, when a certain forming roller 4 is needed, the certain forming roller 4 is rotated to a position opposite to a piston shaft of the stroke cylinder 9 through the motor 6 and stops, then the piston shaft of the stroke cylinder 9 works to enable the push rod 911 to abut against the end part of the forming roller 4, the forming roller 4 is pressed to press the return spring 614 corresponding to the forming roller 4 to shrink, and in the shrinking process, other parts of the forming roller 4 continuously displace in the front side direction of the disc 611 until the other parts are displaced to the curled edge forming area and then stop, namely the working area of the punching mechanism; then the feeding cylinder 1 drives the fixed block 112 and the positioning jig 5 to descend so as to meet the feeding and positioning of the steel plate springs 10 with different arc lengths, then the manipulator delivers the single steel plate spring 10 to the material placing groove 511 which is positioned right above the stroke cylinder 9 in a vertical posture, the depth of the material placing groove 511 is 1/2 of the width of the steel plate spring 10, the aim is to ensure that the manipulator can well feed the steel plate spring 10 into the material placing groove 511, the manipulator does not contact with the positioning jig 5 in the feeding process, because the manipulator can only clamp the 1/2 area of the steel plate spring 10, before the steel plate spring 10 is placed into the material placing groove 511, the transverse moving cylinder 2 can drive the pressing cylinder 211 to drive the pressing plate to translate, so that the pressing plate is not positioned in the area right opposite to the positioning jig 5, and the pressing cylinder 211 also works, the pressing plate 212 is spaced from the positioning jig 5 by a certain distance, then after the steel plate spring 10 is placed in the material placing groove 511, the transverse moving cylinder 2 drives the pressing cylinder 211 and the pressing plate 212 to reset, so that the pressing plate 212 is opposite to the positioning jig 5, then the pressing cylinder 211 works, the pressing plate 212 is enabled to be directly close to the positioning jig 5, the inner side surface of the pressing plate 212 is enabled to be in contact with the side portion of the steel plate spring 10, and the steel plate spring 10 is prevented from jumping out of the material placing groove 511; because the outer diameters of the forming rollers 4 are different, after different forming rollers 4 are replaced, the adjusting cylinder 713 drives the stamping cylinder 711 to drive the stamping roller 712 to displace, so that the stamping roller 712 is displaced to adapt to the outer edge area of a new forming roller 4; after the lower end of the leaf spring 10 reaches the peripheral surface area of the forming roller 4, the punching cylinder 711 drives the punching roller 712 to displace, abut against the end portion of the leaf spring 10, and pass through the forming roller 4 from the outside, so that the end portion of the leaf spring 10 is attached to the outer surface of the forming roller 4 and is punched and bent, and then the working steps of the second punching part 8 are consistent with those of the first punching part 7, and the end portion of the leaf spring 10 is curled.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a be used for leaf spring tip automatic molding device which characterized in that: the device comprises a feeding cylinder (1), forming rollers (4), a positioning jig (5) and a stamping mechanism, wherein the feeding cylinder (1) is arranged in an inverted posture through a supporting beam (111), a fixing block (112) is arranged on an output shaft of the feeding cylinder (1), the positioning jig (5) can be horizontally and movably arranged on the front side of the fixing block (112) through a driving mechanism, a pressing mechanism is arranged at the bottom of the fixing block (112), a plurality of material accommodating grooves (511) are formed in the front side of the positioning jig (5), the groove widths of all the material accommodating grooves (511) are different, the material accommodating grooves (511) are of an arc-shaped structure, a rotating assembly is arranged below the positioning jig (5), the forming rollers (4) are distributed on the front side of the rotating assembly in sequence in an equidistant mode around the circumferential direction of the rotating assembly, the outer diameters of all the forming rollers (4) are sequentially changed from thin to thick along the circumferential direction of the rotating assembly, a stroke cylinder (9), and a push rod (911) is arranged on a piston shaft of the stroke cylinder (9), the push rod (911) can correspond to all the forming rollers (4) one by one, and the stamping mechanism is positioned below the positioning jig (5) and is arranged right opposite to the stroke cylinder (9).

2. The automatic end forming device for leaf springs according to claim 1, wherein: the driving mechanism comprises a lead screw (3), a nut block (311) and a rotating handle (312), the lead screw (3) is horizontally coupled to the bottom of the fixing block (112), the axial direction of the lead screw (3) and the output direction of the feeding cylinder (1) form a cross shape, the nut block (311) is sleeved on the lead screw (3), the lead screw and the nut block are in transmission fit, the nut block (311) is fixedly connected with the positioning jig (5), and the rotating handle (312) is fixedly sleeved at one end of the lead screw (3).

3. The automatic forming device for the end of the leaf spring according to claim 2, wherein: all material placing grooves (511) are distributed along the axial direction of the screw rod (3) at equal intervals, the material placing grooves (511) are vertically arranged on the positioning jig (5), and the two ends of the material placing grooves penetrate through the top and the bottom of the positioning jig (5) respectively.

4. The automatic forming device for the end of a leaf spring according to claim 3, wherein: the depth of the material placing groove (511) is half of the width of the steel plate spring (10), and the positioning jig (5) is made of elastic materials.

5. The automatic end forming device for leaf springs according to claim 1, wherein: hold-down mechanism includes sideslip cylinder (2), compress tightly cylinder (211) and clamp plate (212), sideslip cylinder (2) are the level and set up the bottom at fixed block (112), the output direction of sideslip cylinder (2) and the output direction of pay-off jar (1) constitute the cross, the cylinder body that compresses tightly cylinder (211) is connected with the piston shaft of sideslip cylinder (2), clamp plate (212) are located the front side of positioning jig (5), the one end of clamp plate (212) and the output shaft fixed connection who compresses tightly cylinder (211), can be close to or keep away from to positioning jig (5) footpath through compressing tightly cylinder (211) drive clamp plate (212).

6. The automatic end forming device for leaf springs according to claim 1, wherein: the rotating assembly comprises a motor (6), a disc (611) and a rotating shaft (612), the disc (611) is vertically arranged below the fixed block (112) through the rotating shaft (612), the motor (6) is located on the back side of the disc (611), an output shaft of the motor (6) is connected with the rotating shaft (612), a plurality of through holes which are distributed along the circumference of the disc (611) at equal intervals are formed in the disc (611), the through holes penetrate through the disc (611) and are arranged, all the forming rollers (4) penetrate through the disc (611) through the through holes respectively, a spring gasket (613) is sleeved at one end, located on the back side of the disc (611), of each forming roller (4), a return spring (614) is sleeved outside each forming roller (4), and each return spring (614) is located between the corresponding spring gasket (613) and the disc (611).

7. An automatic end forming device for leaf springs according to claim 6, characterized in that: the output direction of the stroke cylinder (9) is parallel to the axial direction of the forming roller (4), the stroke cylinder (9) is in a normal state, the push rod (911) is positioned in the area of one end of the forming roller (4) where the spring gasket (613) is arranged, and the axis of the push rod (911) can be always overlapped with the axis of one forming roller (4).

8. The apparatus of claim 7, wherein the automatic forming device comprises: punching press mechanism includes first stamping workpiece (7) and second stamping workpiece (8) that the structure is the same, first stamping workpiece (7) are the below one side that the level set up in positioning jig (5), second stamping workpiece (8) are the below opposite side that the slope set up in positioning jig (5), the punching press end tilt up of second stamping workpiece (8), the punching press end of first stamping workpiece (7) is just to second stamping workpiece (8), push rod (911) are in between the punching press end of first stamping workpiece (7) and second stamping workpiece (8) all the time.

9. The automatic end forming device for leaf springs according to claim 8, wherein: the first stamping part (7) comprises a stamping cylinder (711), a stamping roller (712) and an adjusting cylinder (713), the stamping roller (712) is fixedly installed on a piston shaft of the stamping cylinder (711) and forms a stamping end of the first stamping part (7), the axial direction of the stamping roller (712) is parallel to the axial direction of the forming roller (4), the adjusting cylinder (713) is arranged above the stamping cylinder (711) in an inverted mode, the piston shaft of the adjusting cylinder (713) is connected with a cylinder body of the stamping cylinder (711), and the output directions of the piston shaft and the cylinder body are perpendicular.