CN212384283U - Hot rolling forming machine for automobile plate spring - Google Patents

Abstract

The utility model discloses a hot rolling make-up machine of car leaf spring, this mainly include frame, roll extrusion support, roll extrusion system, actuating mechanism, drive mechanism and compression roller set adjustment mechanism etc.. The rolling system comprises a plurality of groups of compression rollers, each group of compression rollers at least comprises an upper compression roller and a lower compression roller which are parallel to each other, and a fit clearance exists, the plurality of groups of compression rollers are sequentially arranged to form an arc, and an arc rolling channel is formed between the upper compression roller and the lower compression roller in the plurality of groups of compression rollers. The middle part of the lower compression roller of each group of compression rollers is provided with an inward concave rolling ring groove. The utility model discloses car leaf spring hot rolling make-up machine adopts servo motor adjustment roll gap and radian, and the workman only needs input leaf spring thickness and curvature radius in toward the computer, but each roller automatic adjustment position, and the spring band steel passes through the automatic entering equipment of roll table, easy operation, and this equipment is the through type, and the product radian is even than traditional hot briquetting, and the arc high tolerance is less, and production efficiency is several times of traditional car leaf spring hot briquetting.

Description

Hot rolling forming machine for automobile plate spring

Technical Field

The utility model belongs to the technical field of car leaf spring roll extrusion technology, concretely relates to disposable hot roll forming machine of car leaf spring.

Background

The traditional constant-section plate spring is formed by hot press of a quenching machine during quenching, a sample worker needs to make a sample manually, then the quenching machine is adjusted according to the sample, and hot press forming is carried out, so that the radian of a product completely depends on the level of the sample worker, the hot press forming speed is low, and the efficiency is low. For example, the publication number is CN 207777494U, "an automobile plate spring", includes a main spring, an upper auxiliary spring, a lower auxiliary spring and rolling ears located at two sides of the main spring, the inner sides of the rolling ears at two ends of the main spring are respectively provided with a hoop, a first gasket is arranged between the main spring and the hoop, the center of the first gasket is provided with a positioning hole, the end part of the first gasket is provided with a limiting part, the included angle between the limiting part and the first gasket is more than 90 degrees, and the limiting part is provided with a limiting groove; the main spring, the upper auxiliary spring and the lower auxiliary spring are locked together through a middle bolt and a locking nut, and the two sides of the upper auxiliary spring and the two sides of the lower auxiliary spring are fixed with damping blocks through fastening bolts. This patent technique is a traditional hot briquetting technology who needs model and corresponding mould, has the difficult regulation of product radian, must change the mould during regulation, and the product radian depends on the competent height of model worker completely, and hot briquetting speed is slower, and monolithic processing at every turn can not realize continuous cycle, and is inefficient, and then leads to the heat energy loss volume big. The automobile plate spring is generally formed by combining a plurality of alloy spring steels with different lengths to form a group of spring beams with similar equal strength, when the plate spring is stressed, because the plate spring pieces are tightly attached, the constant-stiffness plate spring has linear properties, the difference of empty frequency, full-load frequency and overload frequency is large, and when the plate spring is stressed and bent, the mutual friction among the plate spring pieces can generate abnormal sound and influence the service life of the whole automobile. The radian matching precision between each group of leaf springs is required to be ensured by utilizing a die stamping mode in the traditional automobile leaf spring quenching process, and the design difficulty of each group of dies is increased.

Aiming at the defects of the traditional quenching forming of the automobile plate spring, the quenching forming device of the automobile plate spring assembly with the publication number of CN 207347630U is characterized in that a forming lower die is fixed on a supporting beam at the lower part of a main frame body, an automatic discharging mechanism is installed on the supporting beam corresponding to the forming lower die, length positioning mechanisms are arranged at two sides of the main frame body corresponding to the forming lower die, a width positioning mechanism is arranged at the back of the main frame body corresponding to the forming lower die, a central pressing mechanism is arranged right above the forming lower die, the top of the central pressing mechanism penetrates through a middle guide sleeve at the middle position of a movable upper die assembly and then is connected with a central pressing oil cylinder, side pressing oil cylinders are respectively fixed on the main frame body at two sides of the central pressing oil cylinder and are respectively connected with two ends of the. According to the technical scheme, the radian of the upper die can be adjusted through the movable adjustable upper die assembly, but the lower die does not have the radian adjusting function, the technology still adopts a stamping mode, continuous processing cannot be realized, the number of upper die assembly components is large, the adjusting amount is large, and the adjusting difficulty and the maintenance cost are increased.

SUMMERY OF THE UTILITY MODEL

Defect and problem to traditional car leaf spring roll extrusion technology and roll extrusion equipment existence, the utility model provides a can just can form the roll extrusion passageway by automatic car leaf spring through inputing corresponding roll gap and radian parameter according to different design demands, can realize continuously continuing the hot roll extrusion make-up machine of roll extrusion operation's car leaf spring.

The utility model provides a scheme of its technical problem adopts a hot roll extrusion make-up machine of car leaf spring, and this mainly includes frame, roll extrusion support, compression roller system, actuating mechanism (compression roller rotary drive), drive mechanism (compression roller rotary drive) and compression roller group adjustment mechanism etc..

Wherein the roller system: including the multiunit compression roller, every group compression roller has the compression roller and has the cooperation clearance under and on being parallel to each other at least, and the multiunit compression roller is arranged in proper order and is formed the arc, forms arc roll extrusion passageway between the compression roller about in the multiunit compression roller. The middle part of the lower compression roller of each group of compression rollers is provided with an inward concave rolling ring groove. The function of rolling the ring groove: a plurality of rolling ring grooves are matched to form a groove channel, so that the plate spring can be prevented from being bent laterally in the advancing process, and the plate spring with the lateral bending has the straightening effect.

Two ends of the plurality of groups of compression rollers are respectively installed in corresponding bearing boxes on the rolling support through bearings, and each compression roller is respectively in transmission connection with the driving mechanism through a transmission mechanism.

And a compression roller group adjusting mechanism for driving the bearing boxes at the two ends of each compression roller to move vertically is arranged.

The adjusting mechanism here includes at least one form: the bearing boxes at two ends of the plurality of groups of compression rollers are respectively installed in the corresponding vertical slideways at two sides of the rolling support, and the lifting adjusting device is installed at the upper side or the lower side of the corresponding bearing box. And (3) respectively adjusting and positioning the bearing position of the shaft end of each compression roller by using each lifting adjusting device, and further determining the height of each compression roller, namely determining the thickness of a fit clearance between each compression roller group and the radian of the arc-shaped rolling channel.

The power part for controlling the adjusting mechanism of the compression roller group can control each servo motor to rotate by a controller (PLC) according to input roll gap and radian parameters (the controller is connected with key input and display output) through installing the servo motor (or a stepping motor) at the top or the bottom of the vertical slideway so as to drive each bearing box to move up and down (for example, the nut seat is driven to move up and down through the rotation of a screw).

Another implementation mode for driving lifting in the compression roller group adjusting mechanism is that a worm and gear box is installed at the top or the bottom of the vertical slideway, the inner end of the vertical lifting rod at the output end of the worm and gear box is fixedly connected with a bearing box part, a worm shaft at the input end of the worm and gear box is connected with a servo motor, the worm and gear are meshed, and each servo motor is controlled by a controller to rotate to drive the corresponding vertical lifting rod to move up and down, so that each bearing box is driven to move up and down.

The first form is that a worm is meshed with a worm wheel, the worm is used as an input end, the worm wheel is used as an output end, a worm wheel shaft is a hollow shaft, a lifting rod is sleeved in an axis pipe cavity of the worm wheel shaft in a matched mode, a spline is sleeved between the lifting rod and the worm wheel shaft pipe cavity, and the lifting rod and the worm wheel shaft can only lift axially and cannot rotate relatively. The lower section of the lifting rod is a threaded section, the outer side of the lifting rod is connected with a pressing nut in a threaded mode, and the pressing nut is fixed in the vertical sliding of the rolling support, so that the lifting rod can automatically lift and move after rotating. The lower end of the lifting rod is rotatably connected with the corresponding lifting bearing box. The second form is that the worm is meshed with the worm wheel, the worm is used as an input end, the worm wheel is used as an output end, the worm wheel shaft is connected with a lifting rod (pipe) through threads, and the lower end of the lifting rod is fixed on the end face of the corresponding lifting bearing box.

The automobile plate spring hot rolling forming machine also comprises a feeding clamping and conveying mechanism arranged at the feeding end. The feeding pinch mechanism comprises a pinch roller set consisting of a pair of upper and lower rollers, a clamping gap is arranged between the upper and lower rollers, two ends of the upper and lower rollers are installed in a vertical groove through bearings and bearing boxes, and the upper and lower bearing boxes can be vertically adjusted. The upper side of the vertical groove is provided with a spring chamber, a guide rod is arranged in the spring chamber, the outer side of the guide rod is sleeved with a thrust spring, and the lower end of the push-pull spring is supported on the surface of an upper roller bearing box. The guide and guard device is arranged right ahead the clamping gap, and two sides of the guide and guard device are arranged on two sides of the rolling support through the material guide openings. Be provided with vertical bar hole on the guide port of both sides and be used for adjusting to lead the defending device height, for example set up the gim peg and lock mother on the roll extrusion support, vertical bar hole suit can be fixed by the lock mother after the regulation of upgrading in the gim peg outside. The material guide port is provided with a transverse moving adjusting groove, and each transverse moving adjusting groove is provided with a corresponding guide device through a bolt and can be adjusted left and right; the guide device comprises a guide groove with a concave middle part, and the notch of the guide groove is conical and used for guiding the plate spring.

The utility model has the advantages that: the automobile plate spring hot rolling forming machine adopts the servo motor to adjust the roll gap and the radian, workers only need to input the thickness and the curvature radius of a plate spring into a computer, the position of each roll can be automatically adjusted, spring flat steel automatically enters the equipment through a roller way, the operation is simple, the equipment is of a through type, the radian of a product is more uniform than that of the traditional hot-press forming, the tolerance of the arc height is smaller, the production efficiency is greatly improved, and the production efficiency is multiple times that of the traditional automobile plate spring hot-press forming.

Drawings

Fig. 1 is one of the perspective views of the whole machine of the present invention.

Fig. 2 is a left side view of the machine of fig. 1.

Fig. 3 is a rear view of the machine of fig. 1.

Fig. 4 is a second perspective view of the whole device of the present invention.

FIG. 5 is a schematic view showing an arrangement state of the nip roller set.

Fig. 6 is a block diagram of a control method.

Fig. 7 is an adjustment structure view of the roll stack adjustment mechanism.

Reference numbers in the figures: 1-motor, 2-speed reducer, 3-multi-shaft gear box, 4-universal coupling, 5-servo motor, 6-worm gear box, 61-worm gear, 62-worm, 63-worm shaft, 7-press roller, 71-upper press roller, 72-lower press roller, 73-rolling ring groove, 8-frame, 9-rolling support, 10-coupling, 11-motor seat, 12-vertical slideway, 13-slider, 14-lifting rod, 15-bearing box, 16-cover plate, 17-extrusion roller group, 18-guide rod, 19-thrust spring, 20-guide device, 21-thread section, 22-rotary joint and 23-pressing nut.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1: the hot rolling forming machine for the automobile plate spring shown in fig. 1 and 3 comprises a rack 8 and a rolling support 9, wherein the rolling support 9 is fixed at the rear end of the rack 8, a motor 1, a speed reducer 2 and a multi-shaft gear box 3 are sequentially mounted on the rack 8 from front to back, a motor rotating shaft is connected with the input end of the speed reducer 2 through a coupling, the output end of the speed reducer 2 is connected with the input end of the multi-shaft gear box 3 through a coupling, and a plurality of output ends of the multi-shaft gear box 3 are respectively connected with the input ends of corresponding compression rollers 7 through corresponding universal couplings 4.

As can be seen from fig. 2 and 5, the pressing roller system includes a plurality of groups of pressing rollers 7, each group of pressing rollers 7 has at least an upper pressing roller 71 and a lower pressing roller 72 which are parallel to each other and have a fit gap, the plurality of groups of pressing rollers are arranged in sequence to form an arc, and an arc rolling channel is formed between the upper and lower pressing rollers in the plurality of groups of pressing rollers. Further, an inward-concave rolling ring groove 73 is formed in the middle of the lower compression roller of each set of compression rollers. Because there are a plurality of bottom rollers, every bottom roller all contains roll extrusion annular 73 to a plurality of roll extrusion annular 73 cooperations have formed the recess passageway, can prevent that the leaf spring from advancing the process and appearing the lateral bend, to the leaf spring that has the lateral bend (part leaf spring because of heating inhomogeneous factor lead to the cooling state for straight board and heat the back complete phenomenon), have the effect of alignment.

As shown in fig. 1 and 2, two ends of the plurality of groups of press rolls are respectively mounted in corresponding bearing boxes 15 on the rolling support 9 through bearings. The bearing box 15 is internally provided with a cooling channel, circulating cooling water is injected into the cooling channel, and the circulating cooling water is kept to continuously cool the corresponding bearing box when each compression roller works, so that the reliable operation of each compression roller is ensured. And an adjusting mechanism for driving the bearing boxes 15 at the two ends of each compression roller to move vertically is also arranged. Specifically, the bearing boxes 15 at two ends of the plurality of groups of press rolls are respectively installed in the corresponding vertical slideways 12 at two sides of the rolling support 9, and the lifting adjusting devices are installed at the upper side or the lower side of the corresponding bearing boxes 15, and the bearing positions of the shaft ends of the press rolls are respectively adjusted and positioned by utilizing the lifting adjusting devices, so that the height of the press rolls is determined, and the thickness of the fit clearance between the press roll groups is determined.

In the embodiment, the lifting adjusting device is that a worm and gear box 6 is installed at the top or the bottom of a vertical slideway 12, the inner end of a vertical lifting rod 14 connected with a worm gear shaft is fixedly connected with a bearing box part, a worm shaft 63 is connected with a servo motor 5, the servo motor 5 is fixed at one side of a rolling support 9 through a motor base 11, and a worm gear 61 is meshed with a worm 62. The control part comprises programming a computer and using computer software as parameter input and control output equipment for controlling each servo motor 5 to rotate respectively according to parameter values. The automobile plate spring hot rolling forming machine adopts the servo motor 5 to adjust the roll gap and the radian, workers only need to input the thickness and the curvature radius of a plate spring into a computer, the position of each roll can be automatically adjusted, and spring flat steel automatically enters equipment through a roller way.

The embodiment further comprises a feeding clamping and conveying mechanism arranged at the feeding end, as shown in fig. 3 and 4, the pushing mechanism comprises a clamping and conveying roller set 17 consisting of a pair of upper and lower rollers, a clamping gap is formed between the upper and lower rollers, two ends of the upper and lower rollers are installed in the vertical groove through bearings and bearing boxes 15, and the upper and lower bearing boxes 15 can be vertically adjusted.

It can be seen that a spring chamber is provided at the upper side of the vertical groove and a guide rod 18 is installed in the spring chamber, and a push spring 19 is sleeved outside the guide rod 18, and the lower end of the push spring is supported on the surface of the upper roller bearing box 15. And a guide device 20 is further arranged right in front of the clamping gap, and two sides of the guide device are arranged on two sides of the rolling support 9 through material guiding openings. Be provided with vertical bar hole on the guide port of both sides and be used for adjusting to lead and defend 20 heights, set up the gim peg and lock mother for example on roll extrusion support 9, vertical bar hole suit can be fixed by the lock mother after the gim peg outside is adjusted in the upgrading.

During the use, start keeping motor 1 and rotating, through 2 transmission multi-axis gear boxes 3 of speed reducer, 3 a plurality of synchronous output shafts of multi-axis gear box connect 4 input ends of universal joint respectively, and the output of a plurality of universal joint 4 drives the compression roller that corresponds respectively and independently rotates. Plate spring thickness and curvature radius parameters are input into a computer (or the plate spring thickness and curvature radius parameters are input into a PLC through keys, corresponding parameters are displayed through a display on a rack 8), the servo motors 5 are controlled by computer output or PLC output to rotate corresponding turns and angles according to the setting, the servo motors 5 are respectively connected with the input end of a worm gear box 6, a worm serves as the input end, a worm wheel 61 serves as the output end, a worm wheel shaft is a hollow shaft, a lifting rod 14 is sleeved in an axis pipe cavity of the worm wheel shaft in a matched mode, and a spline between the lifting rod 14 and the worm wheel shaft pipe cavity is sleeved, so that the lifting rod and the worm wheel shaft pipe cavity can only lift axially and cannot rotate relatively. The lower section of the lifting rod 14 is a threaded section 21, the outer side of the threaded section is connected with a pressing nut, and the pressing nut is fixed in the vertical sliding of the rolling support 9, so that the lifting rod 14 can automatically lift and move after rotating. The lower end of the lifting rod 14 is rotatably connected with a corresponding lifting bearing box 15 (or through a slide block 13). Thereby realizing the automatic adjustment of each roller and forming the arranged rolling gap and curvature. The hot spring flat steel blank automatically enters the equipment through the guide device 20 through the extrusion roller set 17 of the feeding and feeding mechanism, and the hot spring flat steel blank forms an arc shape after passing through the arc rolling channel. The plurality of rolling ring grooves 73 are matched to form a groove channel, so that the plate spring can be prevented from being bent laterally in the advancing process, and the plate spring with the lateral bending has the straightening effect. The equipment is simple to operate, the working process of the equipment is in a pass-through mode, the radian of a product is even compared with that of the traditional hot-press forming, the tolerance of the arc height is small, and the production efficiency is high.

Example 2: on the basis of the embodiment 1, the pulse data provided for the rotation of each servo motor 5 is controlled by the PLC controller, and drives the corresponding vertical lifting rod 14 to move up and down, thereby driving each bearing box to move up and down. The signal input end of the PLC controller can be connected with a numeric keyboard, the signal output end of the PLC controller can be connected with a display, after the PLC controller is programmed, corresponding parameters are input into the PLC controller through the numeric keyboard, and the PLC controller can automatically provide rotation data of each servo motor 5 according to parameter requirements, as shown in figure 6. According to the plate spring process, the thickness and the curvature radius of a plate spring are input, a servo motor 5 drives a worm and gear box 6 to drive a compression roller to adjust up and down through system calculation, the radian required by a product is formed, a main motor 1 drives the compression roller to rotate through a speed reducer 2, a multi-shaft gear box 3 and a universal coupling 4, heated spring flat steel is sent into the compression roller through a roller way, and the radian required by the plate spring is rolled out at one time.

Example 3: on the basis of embodiment 1, the lifting adjusting device may also be configured such that the servo motors 5 (or stepping motors) are installed at the top or bottom of the vertical slide 12, and the controller controls the rotation of each servo motor 5 to drive each bearing box to move up and down, for example, the nut seat is driven to move up and down by the rotation of the screw rod.

Example 4: on the basis of embodiment 1, the lifting adjusting device may further include a servo hydraulic cylinder installed at the top or bottom of the vertical slide 12, and the controller controls the servo hydraulic cylinders to advance and retreat, so as to drive the bearing boxes to move up and down.

Example 5: on the basis of embodiment 1, the mode for driving lifting in the press roll group adjusting mechanism is that a worm and gear box 6 is installed at the top or bottom of a vertical slideway 12, the inner end of a vertical lifting rod 14 at the output end of the worm and gear box 6 is fixedly connected with a bearing box part, a worm shaft 63 at the input end of the worm and gear box 6 is connected with a servo motor 5, the worm and gear are meshed, and a controller controls each servo motor 5 to rotate to drive the corresponding vertical lifting rod 14 to move up and down, so that each bearing box is driven to move up and down. As shown in fig. 7, the worm is engaged with the worm wheel, the worm is used as an input end, the worm wheel is used as an output end, the worm wheel shaft is a hollow shaft, the lifting rod 14 is sleeved in the shaft cavity of the worm wheel shaft in a matching manner, and the lifting rod 14 and the worm wheel shaft are sleeved through splines, and can only lift axially but cannot rotate relatively. The lower section of the lifting rod 14 is a threaded section 21, the outer side of the threaded section is connected with a pressing nut 23, and the pressing nut is fixed in the vertical sliding of the rolling support 9, so that the lifting rod 14 can automatically move up and down after rotating. The lower end of the lifting rod 14 is rotatably connected with the corresponding lifting bearing box.

Claims (9)

1. A hot rolling forming machine for automobile plate springs comprises a rack, a driving mechanism, a transmission mechanism and a rolling system, and is characterized in that the rolling system comprises a plurality of groups of compression rollers, each group of compression rollers at least comprises an upper compression roller and a lower compression roller which are parallel to each other and have fit gaps, the plurality of groups of compression rollers are sequentially arranged and combined to form an arc, and a combined arc rolling channel is formed between the upper compression roller and the lower compression roller in the plurality of groups of compression rollers; the two ends of the plurality of groups of compression rollers are respectively installed in corresponding bearing boxes on the rolling support through bearings, and each compression roller is respectively in transmission connection with the driving mechanism through a transmission mechanism.

2. The automotive plate spring hot roll forming machine according to claim 1, wherein an adjusting mechanism for driving the bearing boxes at both ends of each press roll to move vertically is provided for adjusting the roll gap and the radian.

3. The hot rolling molding machine for automobile plate springs according to claim 2, wherein the bearing boxes at two ends of the plurality of sets of press rolls are respectively installed in the corresponding vertical slideways at two sides of the rolling support, and the lifting adjusting devices are installed at the upper side or the lower side of the corresponding bearing boxes, and the bearing positions of the shaft ends of the press rolls are respectively adjusted and positioned by using the lifting adjusting devices, so as to determine the heights of the press rolls, namely, the thickness of the fit clearance between the press roll sets and the radian of the arc-shaped rolling channel.

4. The apparatus of claim 3, wherein the controller controls the power mechanism of the elevation adjustment device to drive the bearing boxes to move up and down according to the input roll gap and arc parameters.

5. The automotive leaf spring hot roll forming machine according to claim 1, wherein the lower press roll of each set of press rolls has an inwardly recessed ring groove in the middle thereof.

6. The hot rolling press for forming plate springs of automobiles according to claim 1, further comprising a feeding pinch mechanism provided at the feeding end, comprising a feeding roller set composed of a pair of upper and lower rollers, wherein a clamping gap is provided between the upper and lower rollers, both ends of the upper and lower rollers are installed in the corresponding vertical grooves at both sides of the feeding end of the rolling support through bearings and bearing boxes, and the upper or lower bearing boxes can be vertically adjusted.

7. The automotive plate spring hot roll forming machine according to claim 6, characterized in that a spring chamber is provided at an upper side of the vertical groove and a guide bar is installed in the spring chamber, a push spring is sleeved outside the guide bar, and a lower end of the push spring is supported on a surface of the upper roller bearing box.

8. The automotive plate spring hot roll forming machine according to claim 6, wherein a guide and guard device is provided right in front of the nip, and both sides thereof are mounted on both sides of the roll support through the material guide ports.

9. The hot rolling press for forming plate springs of claim 8, wherein the two side openings are provided with vertical holes for adjusting the height of the guide.

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