Automatic spring bar feeding mechanism

Abstract

The invention belongs to the technical field of automatic spring bar conveying, and discloses an automatic spring bar feeding mechanism which comprises a feeding device, a plurality of translation devices are arranged on one side of the feeding device at equal intervals, a plurality of blanking devices are arranged on the other side of the feeding device at equal intervals, and a plurality of guide devices are arranged on a main body support. A guide support is arranged on the main body support, a tail adjusting device is movably arranged on the feeding device and can do linear reciprocating motion along a rack on the guide support, a spring bar is stably clamped through cooperation of two clamping jaws, and the clamping angle of the spring bar is judged by monitoring the opening distance of the two clamping jaws. And if the clamping position is appropriate, feeding and flattening can be directly carried out, if the clamping position is not appropriate, the needed clamping angle can be achieved by directly rotating by 90 degrees, and feeding and flattening can be carried out again, positioning is rapid and convenient, manual adjustment is not needed, the device can adapt to machining of linear bars or cross-shaped bars, and the automation degree is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automatic spring bar feeding, and particularly relates to a spring bar automatic feeding mechanism applied to a flattening machine. BACKGROUND

[0002] The spring bar is cylindrical, and if the cylindrical end of the bar is directly coiled into a spring, the end face of the spring after coiling is uneven, and the formed spring also needs to be processed in terms of the end face. The processing amount of the spring end face grinding is large, material is wasted, and the quality of the spring is poor. The main technical means currently adopted is that after the bar is cut to the required length, the ends of the bar are heated, the ends of the bar are processed into a shape with a gradually decreasing rectangular cross section in a flattening manner, and then the bar is coiled into a spring shape. The flattened spring bar is convenient for correcting the spring end face during coiling, so that the spring end face is perpendicular to the spring axis, the grinding processing amount of the spring end face during subsequent grinding is reduced, and material is saved.

[0003] Currently, there are mainly two shape requirements for spring bar processing. One is a one-bar type bar, and the ends of the bar are processed into a structure with a rectangular cross section. The angle of the two ends of the rectangular end relative to the center of the bar is consistent, that is, the long edges of the two ends are in approximately the same plane, and the short edges of the two ends are also in approximately the same plane. The other is a cross-bar type bar, and the ends of the bar are processed into a rectangular structure. The two ends of the rectangular end are arranged vertically, that is, the long edges of the two ends are arranged approximately vertically, and the short edges of the two sides are also arranged approximately vertically.

[0004] On the existing disclosed flattening machine, when the above spring bar is manufactured, one end of the spring is flattened first, and then the spring bar is clamped and the unflattened end is sent into the flattening mechanism. Since there is no professional angle adjusting mechanism, manual visual recognition is usually used to adjust the angle of the spring bar in the clamping mechanism to control the relative angle of the two ends after flattening. This control method has poor accuracy and is difficult to determine whether the one-bar type or the cross-bar type can be processed. For some precision springs, the forming angle of the two ends after flattening has a relatively strict requirement. Therefore, the current equipment cannot accurately and quickly position the bar, and a quick spring bar automatic feeding and tail adjusting device is urgently needed. SUMMARY

[0005] To solve the technical problems in the prior art, the application provides a spring bar automatic feeding mechanism which can quickly adjust the angle of the bar and complete automatic feeding.

[0006] To achieve the above object, the technical scheme adopted by the application is as follows: a spring bar automatic feeding mechanism, comprising a feeding device, a plurality of translation devices arranged on one side of the feeding device, a plurality of blanking devices arranged on the other side of the feeding device, and a tail adjusting device movably arranged on the feeding device. The tail adjusting device comprises a housing body and two symmetrically arranged clamping jaws, the rear end of the housing body is rotationally connected with a transmission middle shaft, the outer end of the transmission middle shaft is fixed with a cylinder barrel of an adjusting cylinder, the cylinder rod of the adjusting cylinder is sequentially connected with a rear pull rod, an intermediate pull rod and a front pull rod, the front end of the housing body is provided with a base, the front end of the clamping jaw is free, the middle part of the clamping jaw is hingedly connected with the base, the rear end of the clamping jaw is hingedly connected with one end of a connecting rod, the other end of the connecting rod is hingedly connected with the front pull rod. The tail adjusting device is provided with an adjusting mechanism, which is used for controlling the rotation angle of the clamping jaw around the central axis of the front pull rod.

[0007] The transmission middle shaft is sleeved on the rear pull rod, one end of the transmission middle shaft is supported in the housing body through a deep groove ball bearing, and the middle part of the transmission middle shaft is supported in the housing body through a self-aligning roller bearing. A strip-shaped through hole is formed in the transmission middle shaft, a transmission handle is connected to the rear pull rod, and the two ends of the transmission handle extend out of the strip-shaped through hole, and the top end of the transmission handle is fixed with a chuck. A code support is fixed on the housing body, a motor encoder is mounted on the code support, the output shaft of the motor encoder is connected with a lead screw through a third speed reducer, the lead screw is mounted on the code support through a bearing, a nut is connected to the lead screw, the nut is fixed in a nut seat, the bottom of the nut seat is provided with a clamping groove, and the chuck is clamped in the clamping groove. A slide rod is fixed on the code support, and the nut seat is slidingly connected to the slide rod, and the slide rod is arranged in parallel with the lead screw. The tail adjusting device further comprises a power middle shaft sleeved on the front pull rod, one end of the power middle shaft is supported in the housing body through a deep groove ball bearing, and the other end of the power middle shaft is supported in the housing body through a self-aligning roller bearing.

[0008] The adjusting mechanism comprises a rotating support fixed on the housing body, a first gear is mounted on the rotating support, the first gear is sequentially connected with a second gear and a third gear through meshing, a second motor drives the first gear to rotate through a second speed reducer, and the third gear is fixed with the base through a plurality of bolts.

[0009] The feeding device comprises a main support, a guide support is arranged on the main support, a rack is mounted on the guide support, and the rack is arranged along the length direction of the guide support. The tail adjusting device further comprises a sliding support slidingly mounted on the guide support, the bottom of the sliding support is provided with a fourth gear meshing with the rack, a first motor drives the fourth gear to rotate through a first speed reducer, and the top of the sliding support is connected with the housing body through a plurality of bolts. The translation device is provided with a translation support and a push plate slidingly mounted on the translation support, and the push plate is provided with two clamping jaws. The translation support is installed on one side of the main support through an inclined support, and the middle part of the inclined support is provided with a weight-reducing through hole. The rear section bottom of the translation support is hinged on the inclined support, the front section bottom of the translation support is supported on the main support through the jacking oil cylinder, the front end of the translation support is provided with a guide groove, one side of the push plate is slidably connected in the guide groove through a sliding block, the other side of the push plate is hinged with the cylinder rod end head of the translation cylinder through a first ear plate, the cylinder barrel of the translation cylinder is hinged on a second ear plate, and the second ear plate is fixed on the translation support; The claw includes a first guide plate and a second guide plate, the first guide plate is vertically arranged at the front end of the second guide plate, and the second guide plate is fixed on the push plate through a plurality of bolts.

[0010] The blanking device includes a blanking support, and the top of the blanking support is obliquely arranged with a buffer plate.

[0011] The guide support is arranged along the length direction of the main support, a plurality of guide devices are arranged on the main support, and the plurality of guide devices are arranged along the length direction of the main support. The guide device includes a support base, a guide rod and a rotary cylinder, the support base is fixed on the main support, the bottom end of the guide rod is hinged on the support base, the top end of the guide rod is provided with a guide wheel, the cylinder barrel of the rotary cylinder is hinged on the support base, and the cylinder rod end head of the rotary cylinder is hinged on the middle part of the guide rod.

[0012] The front end of the base is arranged with a limiting baffle, and the limiting baffle is arranged between the two clamping jaws.

[0013] One end of the intermediate pull rod is provided with a first connecting section, the first connecting section is threadedly connected on the rear pull rod, and a first locking nut is threadedly connected on the first connecting section. The other end of the intermediate pull rod is provided with a second connecting section, the second connecting section is threadedly connected on the front pull rod, and a second locking nut is threadedly connected on the second connecting section.

[0014] A copper sleeve is arranged between the third gear and the front pull rod.

[0015] Compared with the prior art, the present application has the following specific beneficial effects: Firstly, the spring rod material can be automatically fed, the angle can be adjusted, the spring rod material can be clamped and returned, and the like through cooperation of the plurality of translation devices, the feeding device, the plurality of blanking devices, the tail adjusting device and the plurality of guide devices, so that the feeding of the spring rod material with multiple diameters can be adapted, the degree of automation is high, and the stability is good.

[0016] Secondly, the tail adjusting device is arranged, the spring bar is stably clamped through cooperation of the two clamping jaws, the clamping angle of the spring bar is judged through monitoring the opening distance of the two clamping jaws, if the clamping position is appropriate, the flat spring can be directly fed, if the clamping position is not appropriate, the clamping angle required can be reached by rotating 90 degrees, and the flat spring can be directly fed again, positioning is fast and convenient, manual adjustment is not needed, and the processing of the one-shaped bar or the cross-shaped bar can be adapted.

[0017] Thirdly, the guide device is provided with an independent cylinder, the lifting of the guide wheel can be controlled independently, the guide wheel is lowered to make necessary displacement when the tail adjusting device makes linear reciprocating motion, the feeding and discharging are not affected, continuous and gapless processing can be realized, the degree of automation is high, and the production efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the present application.

[0019] Figure 2 It is Figure 1 It is a partial enlarged view of A in the middle.

[0020] Figure 3 It is Figure 1 It is a partial enlarged view of B in the middle.

[0021] Figure 4 It is a front view of the present application.

[0022] Figure 5 It is a rear view of the present application.

[0023] Figure 6 It is Figure 5 It is a partial enlarged view of C in the middle.

[0024] Figure 7 It is a side view of the present application.

[0025] Figure 8 It is Figure 1 It is a structure schematic diagram of the tail adjusting device.

[0026] Figure 9 It is a front view of the tail adjusting device.

[0027] Figure 10 It is a side view of the tail adjusting device.

[0028] Figure 11 It is Figure 10 It is a sectional view of A-A.

[0029] Figure 12 It is Figure 11 It is a partial enlarged view of D.

[0030] Figure 13Schematic diagram of the clamping state of case three in the embodiment.

[0031] Figure 14 Schematic diagram of the clamping state of case four in the embodiment.

[0032] In the figure, 1 is a feeding device, 11 is a main body support, 12 is a guide support, 13 is a rack, 2 is a translation device, 21 is a translation support, 22 is a push plate, 23 is a jaw, 231 is a first guide plate, 232 is a second guide plate, 24 is an inclined support, 25 is a jacking oil cylinder, 26 is a sliding block, 27 is a first ear plate, 28 is a second ear plate, 29 is a translation cylinder, 3 is a blanking device, 31 is a blanking support, 32 is a buffer plate, 33 is a blanking clamping seat, 4 is a tail adjusting device, 401 is a sliding support, 402 is a shell main body, 403 is a fourth gear, 404 is a first speed reducer, 405 is a first motor, 406 is an intermediate pull rod, 407 is a rear pull rod, 408 is an adjusting cylinder, 409 is a front pull rod, 410 is a clamping jaw, 411 is a base, 412 is a connecting rod, 413 is a rotating support, 414 is a first gear, 415 is a second gear, 416 is a third gear, 417 is a second speed reducer, 418 is a second motor, 419 is a transmission shaft, 420 is a strip-shaped through hole, 421 is a transmission handle, 422 is a chuck, 423 is an encoding support, 424 is a motor encoder, 425 is a nut, 426 is a nut seat, 427 is a sliding rod, 428 is a power shaft, 429 is a limiting baffle, 430 is a first locking nut, 431 is a second locking nut, 432 is a copper sleeve, 433 is a lead screw, 5 is a guide device, 51 is a support base, 52 is a guide rod, 53 is a rotary cylinder, 54 is a guide wheel, and 6 is a flattening mechanism. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0034] As shown in Figure 1 , Figure 4 , Figure 5 , Figure 7 , the spring bar automatic feeding mechanism comprises a feeding device 1, a plurality of translation devices 2 are arranged on one side of the feeding device 1 at intervals, a plurality of blanking devices 3 are arranged on the other side of the feeding device 1 at intervals, and a tail adjusting device 4 is movably arranged on the feeding device 1.

[0035] As shown in Figure 1 , Figure 2 , Figure 7 ,As shown, the translation device 2 is provided with a translation bracket 21 and a push plate 22 slidingly installed on the translation bracket 21. The translation bracket 21 is installed on one side of the main bracket 11 through an inclined bracket 24. The middle part of the inclined bracket 24 is provided with a weight-reducing through hole. The translation bracket 21 is arranged obliquely downward in a form that the rear end is higher than the front end. The rear section of the translation bracket 21 is hinged to the inclined bracket 24. The front section of the translation bracket 21 is supported by a jacking oil cylinder 25.

[0036] The front end of the translation bracket 21 is provided with a guide groove arranged along the length direction of the translation bracket 21. One side of the push plate 22 is slidingly connected in the guide groove through a sliding block 26. The other side of the push plate 22 is hinged to the cylinder rod end of a translation air cylinder 29 through a first ear plate 27. The cylinder barrel of the translation air cylinder 29 is hinged to one end of a second ear plate 28. The other end of the second ear plate 28 is fixed to the translation bracket 21.

[0037] The top of the push plate 22 is provided with two clamping jaws 23. The clamping jaw 23 comprises a first guide plate 231 and a second guide plate 232. The first guide plate 231 is vertically arranged at the front end of the second guide plate 232. The second guide plate 232 is fixed to the push plate 22 through a plurality of bolts.

[0038] As shown in Figure 1 , Figure 7 , the blanking device 3 comprises a blanking bracket 31. The top of the blanking bracket 31 is obliquely provided with a buffer plate 32. The top of the buffer plate 32 is arranged close to the feeding device 1. The buffer plate 32 and the blanking bracket 31 form an upwardly open blanking clamping seat 33.

[0039] As shown in Figure 5 , Figure 6 , the feeding device 1 comprises a main bracket 11. A plurality of guide devices 5 are arranged on the main bracket 11 along the length direction of the main bracket 11. The guide device 5 comprises a support base 51, a guide rod 52 and a rotary air cylinder 53. The support base 51 is fixed to the main bracket 11. The bottom end of the guide rod 52 is hinged to the support base 51. The top end of the guide rod 52 is provided with a guide wheel 54 which can rotate relative to the guide rod 52. The cylinder barrel of the rotary air cylinder 53 is hinged to the support base 51. The cylinder rod end of the rotary air cylinder 53 is hinged to the middle part of the guide rod 52.

[0040] As shown in Figure 1 , Figure 3 , the main bracket 11 is provided with a guide bracket 12 arranged along the length direction of the main bracket 11. The guide bracket 12 is provided with a rack 13 arranged along the length direction of the guide bracket 12. The tooth surface of the rack 13 is arranged downward.

[0041] As shown in Figure 1 , Figure 4-5 ,Figure 8-11 As shown, the tail adjustment device 4 includes a sliding bracket 401 slidably mounted on the guide bracket 12. The bottom of the sliding bracket 401 is equipped with a fourth gear 403 that meshes with the rack 13. The fourth gear 403 is connected to the output shaft of the first reducer 404 and the first motor 405 in sequence through the power transfer shaft. The first motor 405 drives the fourth gear 403 to rotate.

[0042] The outer casing 402 is mounted on top of the guide bracket 12 by multiple bolts. A central tie rod 406 is slidably mounted inside the outer casing 402. One end of the central tie rod 406 has a first connecting section, which is threadedly connected to one end of a rear tie rod 407. A first locking nut 430 is threaded onto the first connecting section. The other end of the rear tie rod 407 is connected to the cylinder rod of an adjusting cylinder 408. The cylinder barrel of the adjusting cylinder 408 is connected to a transmission shaft 419, which is mounted on the rear tie rod 407. One end of the transmission shaft 419, located inside the outer casing 402, is supported within the outer casing 402 by a deep groove ball bearing, and the other end is supported within the outer casing 402 by a self-aligning roller bearing.

[0043] A strip-shaped through hole 420 is opened on the part of the transmission shaft 419 extending outside the outer shell body 402. The strip-shaped through hole 420 is arranged radially along the transmission shaft 419. A transmission handle 421 is connected to the rear pull rod 407. Both ends of the transmission handle 421 extend outside the strip-shaped through hole 420. A chuck 422 is fixed at the top of the transmission handle 421.

[0044] like Figure 12 As shown, an encoder bracket 423 is fixed on the main body 402. A motor encoder 424 is mounted on the encoder bracket 423. The output shaft of the motor encoder 424 is connected to a lead screw 433 via a third reducer. The lead screw 433 is horizontally mounted on the encoder bracket 423 via bearings. A lead screw nut 425 is connected to the lead screw 433 and is fixed inside a lead screw nut seat 426. The bottom of the lead screw nut seat 426 has a slot, in which a chuck 422 is fitted. The lateral movement of the transmission handle 421 drives the lead screw nut seat 426 and the lead screw nut 425 to move laterally, converting the lateral movement of the lead screw 425 into the rotational movement of the lead screw 433. The number of rotations is detected by the motor encoder 424 to record the number of processing operations. A slide rod 427 is fixed on the encoder bracket 423, and the lead screw nut seat 426 is slidably connected to the slide rod 427. The slide rod 427 is arranged parallel to the lead screw 433.

[0045] The other end of the intermediate pull rod 406 is provided with a second connecting section which is screwed on the front pull rod 409, the second connecting section is screwed with a second locking nut 431, the front pull rod 409 is sleeved with a power intermediate shaft 428, one end of the power intermediate shaft 428 is supported in the shell main body 402 through a deep groove ball bearing, the other end of the power intermediate shaft 428 is supported in the shell main body 402 through a self-aligning roller bearing, the end face of the power intermediate shaft 428 is fixed with the web of the third gear 416 through bolts, the outer side of the web of the third gear 416 is connected with the base 411 through a plurality of bolts, and the copper sleeve 432 is arranged between the third gear 416 and the front pull rod 409.

[0046] The tail adjusting device 4 further comprises a rotating support 413 fixed on the shell main body 402, the rotating support 413 is provided with a first gear 414, the first gear 414 is sequentially connected with a second gear 415 and a third gear 416, the first gear 414 is sequentially connected with the output shaft of a second speed reducer 417 and a second motor 418 through a transmission shaft, the second gear 415 is rotatably connected to the rotating support 413 through an auxiliary adapter shaft, the front pull rod 409 passes through the third gear 416 and extends outward, the front ends of the two symmetrical clamping jaws 410 form an opening capable of clamping a bar, the middle part of the clamping jaw 410 is hinged to the base 411, the base 411 is arranged at the front end of the shell main body 402, the front end of the clamping jaw 410 is free, the rear end of the clamping jaw 410 is hinged to one end of the connecting rod 412, the other end of the connecting rod 412 is hinged to the front pull rod 409, and the base 411, the clamping jaw 410, the connecting rod 412 and the front pull rod 409 form a multi-link structure, and the front end of the base 411 is provided with a limiting baffle 429 which is arranged between the two clamping jaws 410.

[0047] The working process of the present application is as follows: Loading: the cylinder rod of the lifting oil cylinder 25 is extended, the translation bracket 21 rotates around the tail, the front end of the translation bracket 21 is lifted and is at the highest point, the translation cylinder 29 is retracted, the push plate 22 is at the rear end, the cylinder rod of the rotation cylinder 53 is extended, the guide wheel 54 is at the highest point, the tail adjusting device 4 is at the tail end of the guide bracket 12, and the two clamping jaws 410 on the tail adjusting device 4 are opened.

[0048] One end of the spring bar has been processed into a rectangular quadrangular structure. The other end of the spring bar is heated to a predetermined temperature. The spring bar rolls into the translation device 2 at an angle perpendicular to the translation bracket 21. The end face of the quadrangular structure is arranged near the tail adjustment device 4, and the unflattened end is arranged near the flattening mechanism 6. Multiple claws 23 at the top form the first row of thrust brackets, and multiple claws 23 at the bottom form the second row of thrust brackets. The spring bar is stuck at the angle between the first guide plate 231 and the second guide plate 232 at the top. Multiple translation cylinders 29 extend outwards synchronously, push plate 22 moves to the foremost position, cylinder rod of lifting cylinder 25 retracts inwards, front end of translation bracket 21 descends to the lowest point, spring bar material disengages from the first row of thrust brackets and falls onto multiple guide wheels 54, cylinder rod of translation cylinder 29 retracts inwards to the initial position; first motor 405 starts, fourth gear 403 rotates, under the meshing action of rack 13, tail adjustment device 4 moves forward to the spring bar material position, spring bar material is placed in two grippers 410, cylinder rod of adjustment cylinder 408 retracts inwards, front pull rod 409, middle pull rod 406, and rear pull rod 407 move backwards synchronously, under the action of connecting rod 412, two grippers 410 engage inwards to clamp spring bar material.

[0049] During the process of clamping spring bar material, taking a cross-shaped spring bar material with a flattened cross-section size of 3:1 as an example (the flattened end cross-section is rectangular, and the length-to-width ratio of the end cross-section is 3:1), since the flattening machine first flattens the long side end face, the upper and lower jaws 410 need to hold the already formed end, which means there are five possible scenarios: Scenario 1: If the short sides at both ends are clamped, and the sensor measures that the opening distance between the two jaws 410 is 3, it can be directly fed into the flattening mechanism 6 for flattening processing; Scenario 2: If the long sides at both ends are clamped, and the sensor measures that the opening between the two jaws 410 is 1, the second motor 418 drives the first gear 414, the second gear 415, the third gear 416, and the base 411 to rotate 90 degrees before feeding it into the flattening mechanism 6 for flattening processing; Scenario 3: If... Figure 13 As shown, if the spring bar material enters the two grippers 410 at a large angle, the two grippers 410 hold the diagonal of the four-sided structure. The spring bar material slides under the action of the clamping force, so that the two grippers hold the long sides of the upper and lower ends. The sensor measures that the opening between the two grippers 410 is 1, rotates 90 degrees and is sent into the flattening mechanism 6 for flattening processing; Case 4, such as Figure 14 As shown, if the spring bar material enters the two grippers 410 at a small angle, the two grippers 410 hold the diagonal of the four-sided structure. The spring bar material slides under the action of the clamping force, so that the two grippers hold the short sides at the top and bottom ends. The sensor measures that the opening between the two grippers 410 is 3, and then it is sent to the flattening mechanism 6 for flattening processing; Case 5, such as Figure 13 , 14As shown, in special cases, the two clamping jaws 410 hold the spring bar diagonally and cannot slide to the long side or the short side, the sensor measures that the opening between the two clamping jaws 410 is not 1 or 3, and judges that the clamping is abnormal, the two clamping jaws 410 are loosened and re-grabbed, which can be applied to the mode processing of case three and case four, and the jamming situation can be solved. In the extreme case, the sensor in case five judges that the opening between the two clamping jaws 410 is not 1 or 3 for multiple times, that is, an alarm is given, and the operator can handle it on site.

[0050] After the spring bar is clamped and positioned in the two clamping jaws 410, the first motor 405 works, the tail adjusting device 4 clamps the spring bar to move towards the flattening mechanism 6, a plurality of rotary cylinders 53 are retracted in turn, the guide wheels 54 are turned downward and avoid the tail adjusting device 4, and do not affect the operation of the tail adjusting device 4.

[0051] During the operation of the cylinder rod of the adjusting cylinder 408, the driving handle 421 drives the chuck 422, the nut seat 426 and the nut 425 to move linearly, the linear motion of the nut 425 is converted into the rotary motion of the rotating shaft of the motor encoder 424 and the lead screw 433, and then the processing frequency is recorded.

[0052] After the spring bar enters the flattening mechanism 6 and is rolled flat on each end face, after the rolling and flattening are completed, the first motor 405 works, under the meshing action of the fourth gear 403 / the rack 13, the tail adjusting device 4 moves to the tail of the guide support 12, the cylinder rod of the adjusting cylinder 408 is extended, under the action of the connecting rod 412, the two clamping jaws 410 are opened and the spring bar is loosened, under the frictional action of the second row of thrust supports, the spring bar falls on the second row of thrust supports, under the driving of the second motor 418, the two clamping jaws 410 are reset. Subsequently, the cylinder rod of the jacking oil cylinder 25 is extended, the spring bar for next processing is rolled into the first row of thrust supports, the cylinder rod of the translation cylinder 29 is extended, the spring bar for next processing enters the pre-processing position, the cylinder rod of the jacking oil cylinder 25 is retracted, the spring bar processed on the second row of thrust supports falls on the plurality of buffer plates 32, the spring bar processed falls into the falling clamp seat 33, and the spring bar for next processing starts positioning and flattening processing, that is, one feeding and processing operation is completed.

[0053] The spring bar can realize automatic feeding, angle adjustment, clamping and return of the spring bar, can adapt to feeding of spring bars of multiple diameters, does not need manual adjustment, can adapt to processing of one-letter type bar or cross type bar, has high automation degree and good stability.

[0054] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. An automatic feeding mechanism for spring bars, characterized in that, It includes a feeding device (1), a plurality of translation devices (2) are arranged on one side of the feeding device (1), a plurality of dropping devices (3) are arranged on the other side of the feeding device (1), and a tail adjustment device (4) is movably provided on the feeding device (1). The tail adjustment device (4) includes a housing body (402) and two symmetrically arranged grippers (410). The rear end of the housing body (402) is rotatably connected to a transmission shaft (419). The outer end of the transmission shaft (419) is fixed to the cylinder of the adjustment cylinder (408). The cylinder rod of the adjustment cylinder (408) is connected in sequence to the rear pull rod (407), the middle pull rod (406), and the front pull rod (409). The front end of the housing body (402) is provided with a base (411). The front end of the gripper (410) is free. The middle part of the gripper (410) is hinged to the base (411). The rear end of the gripper (410) is hinged to one end of the connecting rod (412). The other end of the connecting rod (412) is hinged to the front pull rod (409). The tail adjustment device (4) is provided with an adjustment mechanism, which is used to control the rotation angle of the gripper (410) around the central axis of the front pull rod (409).

2. The automatic feeding mechanism for spring bars according to claim 1, characterized in that, The transmission shaft (419) is mounted on the rear tie rod (407). One end of the transmission shaft (419) is supported in the outer shell body (402) by a deep groove ball bearing, and the middle part of the transmission shaft (419) is supported in the outer shell body (402) by a self-aligning roller bearing. The transmission shaft (419) has a strip-shaped through hole (420), and the rear pull rod (407) is connected to a transmission handle (421). Both ends of the transmission handle (421) extend outside the strip-shaped through hole (420), and a chuck (422) is fixed at the top of the transmission handle (421). An encoding bracket (423) is fixed on the outer shell body (402). A motor encoder (424) is mounted on the encoding bracket (423). The output shaft of the motor encoder (424) is connected to the lead screw (433) through a third reducer. The lead screw (433) is mounted on the encoding bracket (423) through a bearing. A lead nut (425) is connected to the lead screw (433). The lead nut (425) is fixed in the lead nut seat (426). The bottom of the lead nut seat (426) is provided with a slot. The chuck (422) is fitted in the slot. A slide rod (427) is fixed on the encoder bracket (423), and the lead screw seat (426) is slidably connected to the slide rod (427). The slide rod (427) is arranged parallel to the lead screw (433). The tail adjustment device (4) also includes a power shaft (428) mounted on the front tie rod (409). One end of the power shaft (428) is supported in the housing body (402) by a deep groove ball bearing, and the other end of the power shaft (428) is supported in the housing body (402) by a self-aligning roller bearing.

3. The automatic feeding mechanism for spring bars according to claim 2, characterized in that, The adjustment mechanism includes a rotating bracket (413) fixed on the outer shell body (402). The rotating bracket (413) is equipped with a first gear (414). The first gear (414) is sequentially meshed with a second gear (415) and a third gear (416). A second motor (418) drives the first gear (414) to rotate through a second reducer (417). The third gear (416) is fixed to the base (411) by multiple bolts.

4. The automatic feeding mechanism for spring bars according to claim 3, characterized in that, The feeding device (1) includes a main support (11), a guide support (12) is provided on the main support (11), and a rack (13) is mounted on the guide support (12). The rack (13) is arranged along the length direction of the guide support (12). The tail adjustment device (4) further includes a sliding bracket (401) slidably mounted on the guide bracket (12). The bottom of the sliding bracket (401) is equipped with a fourth gear (403) that meshes with the rack (13). The first motor (405) drives the fourth gear (403) to rotate through the first reducer (404). The top of the sliding bracket (401) is connected to the outer shell body (402) by multiple bolts.

5. The automatic feeding mechanism for spring bars according to claim 4, characterized in that, The translation device (2) is provided with a translation bracket (21) and a push plate (22) slidably mounted on the translation bracket (21). The push plate (22) is provided with two claws (23). The translation bracket (21) is installed on one side of the main bracket (11) via the inclined bracket (24), and the inclined bracket (24) has a weight-reducing through hole in the middle. The translation bracket (21) is arranged at an angle. The bottom of the rear section of the translation bracket (21) is hinged to the inclined bracket (24). The bottom of the front section of the translation bracket (21) is supported on the main bracket (11) by the lifting cylinder (25). The front end of the translation bracket (21) is provided with a guide groove. One side of the push plate (22) is slidably connected in the guide groove by the slider (26). The other side of the push plate (22) is hinged to the cylinder rod end of the translation cylinder (29) by the first ear plate (27). The cylinder of the translation cylinder (29) is hinged to the second ear plate (28). The second ear plate (28) is fixed on the translation bracket (21). The claw (23) includes a first guide plate (231) and a second guide plate (232). The first guide plate (231) is arranged vertically at the front end of the second guide plate (232), and the second guide plate (232) is fixed to the push plate (22) by multiple bolts.

6. The automatic feeding mechanism for spring bars according to claim 5, characterized in that, The material feeding device (3) includes a material feeding bracket (31), and a buffer plate (32) is inclinedly arranged on the top of the material feeding bracket (31). An upward-opening material feeding seat (33) is formed between the buffer plate (32) and the material feeding bracket (31).

7. The automatic feeding mechanism for spring bars according to claim 6, characterized in that, The guide bracket (12) is arranged along the length of the main bracket (11), and a plurality of guide devices (5) are arranged on the main bracket (11). The plurality of guide devices (5) are arranged along the length of the main bracket (11). The guiding device (5) includes a support base (51), a guide rod (52) and a rotary cylinder (53). The support base (51) is fixed on the main support (11). The bottom end of the guide rod (52) is hinged to the support base (51). The top end of the guide rod (52) is equipped with a guide wheel (54). The cylinder of the rotary cylinder (53) is hinged to the support base (51). The end of the cylinder rod of the rotary cylinder (53) is hinged to the middle of the guide rod (52).

8. The automatic feeding mechanism for spring bars according to claim 7, characterized in that, A limiting baffle (429) is arranged at the front end of the base (411), and the limiting baffle (429) is placed between two grippers (410).

9. The automatic feeding mechanism for spring bars according to claim 8, characterized in that, One end of the intermediate pull rod (406) is provided with a first connecting section, which is threadedly connected to the rear pull rod (407), and a first locking nut (430) is threadedly connected to the first connecting section. The other end of the intermediate pull rod (406) is provided with a second connecting section, which is threaded onto the front pull rod (409), and a second locking nut (431) is threaded onto the second connecting section.

10. The automatic feeding mechanism for spring bars according to claim 9, characterized in that, A copper sleeve (432) is installed between the third gear (416) and the front tie rod (409).

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