Profile processing equipment for aluminum alloy energy absorption box

Abstract

The invention provides profile machining equipment for an aluminum alloy energy absorption box, and relates to the technical field of energy absorption box machining, and the profile machining equipment for the aluminum alloy energy absorption box comprises cutting equipment, transferring equipment and punching equipment which are sequentially arranged and complete workpiece circulation; the cutting equipment comprises a first machine table, a cutting groove is formed in the table top of the first machine table, a pressing seat used for pressing a sectional material is arranged above the cutting groove, a shaping machine used for straightening and positioning the sectional material is arranged on one side of the cutting groove, and a guide channel used for outputting a cut workpiece is arranged on the other side of the cutting groove. The cutting equipment, the transferring equipment and the punching equipment are integrated in sequence and connected through the conveying channel with the overturning assembly and the feeding and discharging assembly, full-process automatic continuous production from fixed-length cutting of profiles and automatic overturning of workpiece postures to multi-face punching is achieved, intermediate buffering and manual intervention are greatly reduced, the production efficiency is improved, and the production cost is reduced. And the production takt and the overall efficiency are obviously improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy absorption box processing, more particularly, it relates to a profile processing equipment for aluminum alloy energy absorption box. BACKGROUND

[0002] In the field of manufacturing automobile safety structure, the profile of aluminum alloy energy absorption box as a key energy absorption component usually needs to go through multiple processes such as cutting, blanking and forming. In the traditional processing mode, each process is usually completed by independent equipment, which has obvious efficiency bottleneck and coordination problem.

[0003] Specifically, first, the single workpiece obtained after the profile is cut to a fixed length by the cutting equipment is usually in a horizontal state, while the subsequent multi-surface punching process needs the workpiece to be positioned and clamped in an upright posture. This posture conversion currently relies on manual operation or simple mechanical fork, which not only is low in efficiency and high in labor intensity, but also is easy to cause scratches or bumps on the surface of the workpiece during the transfer process, affecting the product quality. Secondly, the workpiece flow between processes is not continuous, and needs to be loaded and unloaded multiple times and buffered in the middle, which increases the production rhythm and limits the improvement of overall automation. Thirdly, the independent equipment layout also leads to large floor area and difficulty in controlling the cumulative error of the precision at the process connection. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a profile processing equipment for aluminum alloy energy absorption box, which solves the problem of low efficiency in the prior art due to multiple production processes of energy absorption box.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: The profile processing equipment for aluminum alloy energy absorption box comprises a cutting device, a transfer device and a punching device which are arranged in sequence and complete the workpiece flow; the cutting device comprises a first machine table, a cutting groove is arranged on the table surface of the first machine table, a pressing seat for pressing the profile is arranged above the cutting groove, a straightening machine for straightening and positioning the profile is arranged on one side of the cutting groove, and a guide channel for outputting the workpiece after cutting is arranged on the other side; the transfer device comprises a second machine table, a conveying channel composed of two mounting plates is arranged on the second machine table, a conveying chain is arranged in the conveying channel, a turnover assembly for receiving the workpiece and turning it from a horizontal state to an upright state is arranged at one end of the conveying channel close to the guide channel; an unloading and loading assembly is arranged at the cutting device, the workpiece is conveyed to the punching device through the conveying channel, and the unloading and loading assembly performs the unloading and loading operation.

[0006] According to one embodiment of the present application, an avoiding groove corresponding to the cutting groove is arranged at the bottom of the pressing seat, the pressing seat is slidingly connected with a stand arranged on the first machine table, and is driven to rise and fall by a pressing cylinder.

[0007] According to one embodiment of the present application, the guide channel is surrounded by two guide plates arranged on the first machine table, and the side of the guide plates facing the cutting groove is in an open structure.

[0008] According to one embodiment of the present application, the turnover assembly comprises a turnover frame rotatably installed, the turnover frame has a plurality of circumferentially distributed supporting arms, and rollers are arranged on the supporting arms; the turnover frame is installed on the mounting plates on both sides through a turnover shaft, and one end of the turnover shaft is connected with a driving sprocket.

[0009] According to one embodiment of the present application, the conveying chain is linked with the turnover assembly, a first sprocket in loose connection with the turnover shaft and a second sprocket as a driving wheel are arranged on the mounting plate on the same side, and the conveying chain is sleeved on the first sprocket and the second sprocket.

[0010] According to one embodiment of the present application, the punching device comprises a third machine table, the third machine table is provided with a mold cavity and an even number of punching units arranged around the mold cavity, and two-by-two symmetrical punching units share one lifting and rotating assembly.

[0011] According to one embodiment of the present application, each of the punching units comprises a punching head, a punching seat and a wedge mechanism, the punching seat is slidably arranged, and the end of the punching seat is in linkage with a vertically arranged ejector rod through the wedge mechanism; the lifting and rotating assembly comprises a driving end capable of lifting and rotating, and the driving end is symmetrically provided with ejector arms for pushing the ejector rod.

[0012] According to one embodiment of the present application, the third machine table is provided with an outer mold capable of vertically sliding and an inner mold fixedly arranged, and the mold cavity is formed between the outer mold and the inner mold; the driving end of the lifting and rotating assembly is connected with a limiting plate connected to the bottom end of the outer mold through a spring telescopic rod.

[0013] According to one embodiment of the present application, the feeding and discharging assembly comprises a horizontal plate and a height-adjusting cylinder for driving the horizontal plate to lift and descend, the horizontal plate is provided with a feeding unit and a discharging unit, each of the units comprises a rotating cylinder, a picking cylinder and a clamping cylinder; one side of the feeding unit is provided with a workpiece track in connection with the conveying track of the transfer device.

[0014] According to one embodiment of the present application, the ejector rod is provided with a limiting ring, and the ejector arm is in an arcuate structure, and the thickness of the ejector arm gradually decreases from the inner end to the outer end.

[0015] In summary, the present application has at least one of the following beneficial technical effects: 1. In this scheme, by integrating cutting equipment, transfer equipment and punching equipment in turn, and using conveying channel with turnover assembly and feeding and discharging assembly for connection, full-process automatic continuous production from profile fixed-length cutting, automatic turnover of workpiece posture to multi-face punching is realized, intermediate buffering and manual intervention are greatly reduced, and production rhythm and overall efficiency are significantly improved.

[0016] 2. In this scheme, the turnover assembly designed in the transfer equipment can stably receive the cut workpiece and accurately turn it from the horizontal state during cutting to the vertical state required for punching, avoiding surface scratches and bumps that may be caused by manual or simple mechanical transfer. Combined with the straightening positioning and guide channel of the cutting equipment, the workpiece with consistent posture and accurate positioning is provided for subsequent punching, ensuring the processing quality.

[0017] 3. In this scheme, an even number of symmetrical punching units are used to cooperate with the rotatable lifting and rotating assembly to realize multi-station synchronous punching operation on the energy absorption box workpiece, which can achieve the same technical effect as the traditional punching scheme.

[0018] 4. In this scheme, a combined structure of vertically sliding and separating outer mold and fixed inner mold is used, cooperating with the spring telescopic rod linked with the lifting and rotating assembly. During processing, the inner and outer molds are closed to provide internal and external support for the workpiece to prevent punching deformation; after processing, the outer mold can descend with the lifting disc descending, and the workpiece is naturally exposed, realizing no ejector pin ejection, completely avoiding the local deformation problem of thin-walled workpiece caused by traditional ejector pin, and facilitating stable taking and placing of the feeding and discharging assembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structural diagram of the profile processing equipment for aluminum alloy energy absorption box provided by the present application; Figure 2 The structural diagram of the cutting equipment provided by the present application; Figure 3 The structural diagram of the transfer equipment provided by the present application; Figure 4 The sectional view of the transfer equipment provided by the present application; Figure 5 The structural diagram of the turnover assembly in the transfer equipment provided by the present application; Figure 6 The structural diagram of the punching equipment provided by the present application; Figure 7 The top view of the punching equipment provided by the present application; Figure 8 The partial structural diagram of the punching equipment provided by the present application; Figure 9 The partial exploded structural diagram of the punching equipment provided by the present application; Figure 10 Partial structural diagram of the jacking and rotating assembly of the punching equipment provided by the present application; Figure 11 Structural schematic diagram of a punching unit provided by the present application; Figure 12 Structural diagram of the feeding and discharging assembly provided by the present application.

[0020] Reference signs: 1. cutting equipment; 11. first machine table; 111. cutting groove; 12. stand; 13. shaper; 14. pressing seat; 141. avoiding groove; 15. guide rail; 16. cutting machine; 17. guide plate; 18. downward pressing cylinder; 2. transfer equipment; 21. second machine table; 22. mounting plate; 23. conveying chain; 24. overturning assembly; 241. overturning frame; 242. roller; 243. overturning shaft; 244. driving sprocket; 25. motor; 26. first sprocket; 27. second sprocket; 3. punching equipment; 31. third machine table; 311. guide hole; 312. guide block; 32. punching unit; 321. punching head; 322. punching seat; 3231. inclined wedge sliding block; 3232. inclined wedge sliding plate; 324. jacking rod; 3241. blocking ring; 3242. blocking block; 325. fixing seat; 326. guide column; 327. guide rod; 328. support plate; 3281. inclined wedge sliding rail; 329. fixing sleeve; 33. jacking and rotating assembly; 331. base; 332. base cylinder; 333. intermediate supporting plate; 334. jacking disc; 3341. pushing arm; 335. intermediate cylinder; 336. rack; 337. support; 338. gear; 339. rotating shaft; 3310. rotating disc; 3311. spring telescopic rod; 3312. limiting plate; 34. die sleeve; 341. first guide groove; 35. inner die; 351. second guide groove; 36. outer die; 361. guide groove; 37. feeding and discharging assembly; 371. taking-out cylinder; 372. clamping cylinder; 373. rotating cylinder; 374. cross plate; 375. height-adjusting cylinder; 376. supporting frame; 377. workpiece track. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0022] Embodiment one, as Figure 1As shown, a profile processing equipment for aluminum alloy energy absorption boxes is provided, which comprises a cutting equipment 1, a transfer equipment 2 and a punching equipment 3. The profile is cut into single semi-finished workpieces by the cutting equipment 1, and then the semi-finished workpieces are sent to the punching equipment 3 by the transfer equipment 2 to complete the punching process.

[0023] Referring to Figure 2 , the cutting equipment 1 comprises a first machine table 11, the bottom of the first machine table 11 is provided with a cutting machine 16, the cutting machine 16 is installed on a guide rail 15, a cutting groove 111 is formed on the table top of the first machine table 11, a cutting knife of the cutting machine 16 walks along the cutting groove 111, a shaping machine 13 is arranged on one side of the first machine table 11, the shaping machine 13 can be a square steel straightening machine, the profile passes through the shaping machine 13 to the cutting groove 111, after the length of the profile to be cut is determined, a downward cylinder 18 is started to press the profile tightly on the first machine table 11 by using a pressing seat 14. At this time, the cutting machine 16 is started, the cylinder pushes the cutting machine 16 to move to one side of the profile along the guide rail 15, and the cutting operation of the semi-finished workpiece is completed.

[0024] Further, one side of the pressing seat 14 is slidably connected with a vertical wall of the stand 12, the bottom of the pressing seat 14 is provided with an avoiding groove 141, the avoiding groove 141 corresponds to the cutting groove 111, so that the cutting machine 16 enters the avoiding groove 141 when walking along the cutting groove 111, which can not only ensure the cutting of the profile, but also avoid the contact between the pressing seat 14 and the cutting knife of the cutting machine 16. The pressing seat 14 is arranged along the length direction of the cutting groove 111, which is convenient for the position adjustment of the shaping machine 13. By arranging the shaping machine 13, the profile can be straightened and positioned at the same time, so that the profile can be kept in a stable state during the cutting process only by pressing the profile by the pressing seat 14.

[0025] Two guide channels surrounded by guide plates 17 are arranged on one side of the first machine table 11 relative to the shaping machine 13, the guide plates 17 can be arranged arbitrarily according to the position of the profile, but it is necessary to ensure that one end of the profile slightly enters the guide channel before the profile is cut. In order to ensure that one end of the profile enters smoothly, the side of the guide plate 17 facing the cutting machine 16 is designed as an open structure. During the cutting process, when the cutting machine 16 completes the cutting of the semi-finished workpiece, since one end of the semi-finished workpiece has entered the guide channel, the profile will push the cut semi-finished workpiece from the guide channel to the turnover assembly 24 of the transfer equipment 2 during the next cutting.

[0026] Referring to Figure 3 and Figure 4The transferring device 2 comprises a second machine table 21, the second machine table 21 is provided with a conveying channel, the inner walls on both sides of the conveying channel are provided with mounting plates 22 through bolts, the spacing between the two mounting plates 22 can be adjusted through bolts, specifically, the width between the two mounting plates 22 is consistent with the width of the profile in the horizontal plane or the width between the two mounting plates 22 is slightly larger than the width of the profile in the horizontal plane, the side of the two mounting plates 22 close to each other is provided with a conveying chain 23, the conveying channel is provided with a turnover assembly 24 on the side close to the guide plate 17, the turnover assembly 24 is used for adjusting the state of the semi-finished workpiece, so that it changes from a horizontal state to a vertical state, facilitating the punching operation.

[0027] Referring to Figure 5 The conveying chain 23 and the turnover assembly 24 of the embodiment are integrated structures, the turnover assembly 24 comprises a turnover frame 241 and a turnover shaft 243, the turnover frame 241 is a cross-shaped structure, the turnover shaft 243 is installed at the center of rotation of the turnover frame 241, the two ends of the turnover shaft 243 are installed on the two mounting plates 22 through bearing seats, and the turnover frame 241 is uniformly provided with rollers 242 on each supporting arm. Then, the first sprocket 26 is connected to the turnover shaft 243 on the two sides of the turnover frame 241, but the first sprocket 26 is rotatably sleeved on the turnover shaft 243, the mounting plate 22 on the end of the conveying channel away from the guide plate 17 is provided with a second sprocket 27, the first sprocket 26 and the second sprocket 27 of the same side mounting plate 22 are used to install a conveying chain 23, and then the two conveying chains 23 in the conveying channel can support the semi-finished workpiece and convey it, wherein the second sprocket 27 is a driving sprocket and can drive one conveying chain 23 to run. The motor 25 is also installed on the second machine table 21, the driving sprocket 244 is installed at one end of the turnover shaft 243, and the output end of the motor 25 is power-connected with the driving sprocket 244 through another chain, so that the motor 25 can drive the conveying chain 23 and the turnover assembly 24 to run.

[0028] Further, the supporting arm on the side close to the guide plate 17 can receive the semi-finished workpiece pushed out of the guide channel formed by the guide plate 17 in the horizontal state, in addition, each supporting arm in the turnover assembly 24 needs to be lower than the chain above the conveying chain 23 in the horizontal state, so that when the profile pushes the last semi-finished workpiece into the transferring device 2, the semi-finished workpiece is caught by the turnover assembly 24, then it is turned back by 90°, when the turnover angle of the turnover assembly 24 approaches 90°, one end of the semi-finished workpiece first contacts the chain above the conveying chain 23, and when the turnover assembly 24 completes the turnover, the semi-finished workpiece in the vertical state enters the punching device 3 under the conveying of the transferring device 2.

[0029] Referring to Figure 6The punching device 3 of the embodiment comprises a third machine table 31, the machining surface of the third machine table 31 is provided with an inner die 35 and an outer die 36, a die cavity for inserting a workpiece is left between the inner die 35 and the outer die 36, the third machine table 31 is provided with a punching assembly and a jacking and rotating assembly 33 for driving the punching assembly to punch, in order to realize the effect of synchronous punching of multiple stations, the punching assembly of the embodiment comprises an even number of punching units 32 distributed around the die cavity and arranged symmetrically in pairs, six punching units 32 are adopted in the embodiment, each punching unit 32 corresponds to a punching position, the punching unit 32 comprises a punching head 321 and a punching seat 322 for mounting the punching head 321, the punching seat 322 is slidingly installed on the machining surface, a top rod 324 corresponding to the punching seat 322 is vertically slidingly arranged on the machining surface, the tail end of the punching seat 322 and one end of the top rod 324 are connected through a wedge mechanism, and a push arm 3341 is symmetrically arranged on the driving end of the jacking and rotating assembly 33 for pushing the top rod 324.

[0030] Further, referring to Figure 6 and Figure 12 , in order to facilitate feeding and discharging, the feeding and discharging assembly 37 is arranged on the punching device 3, the feeding and discharging assembly 37 comprises a horizontal plate 374 and a support frame 376 mounted on the machining surface, an adjusting cylinder 375 is mounted on the side surface of the support frame 376, the top end of the adjusting cylinder 375 is connected with the horizontal plate 374, two ends of the horizontal plate 374 are respectively provided with a feeding unit and a discharging unit, both units comprise a rotating cylinder 373 connected with the horizontal plate 374, an L-shaped workpiece taking frame is mounted on the rotating cylinder 373, a workpiece taking cylinder 371 is vertically mounted on one end of the workpiece taking frame, a clamping cylinder 372 is further connected to the bottom end of the workpiece taking cylinder 371, one side of the feeding unit is further provided with a workpiece track 377, one end of the workpiece track 377 extends between the two mounting plates 22, and the end of the workpiece track 377 facing the mounting plate 22 is of an open structure, facilitating the semi-finished workpiece to enter the workpiece track 377, and a stopper 3242 is arranged at the end of the workpiece track 377 away from the mounting plate 22, which is beneficial to the grabbing of the feeding and discharging assembly 37 when the semi-finished workpiece abuts against the stopper 3242.

[0031] In the working process, the adjusting cylinder 375 drives the horizontal plate 374 to ascend and descend to adapt to the workpiece requirements of different heights, when feeding, the rotating cylinder 373 drives the workpiece taking frame to rotate to above the workpiece track 377, the workpiece taking cylinder 371 is elongated to make the clamping cylinder 372 descend and clamp the workpiece, then the rotating cylinder 373 is reset and the workpiece is accurately placed into the die cavity through the extension and retraction of the workpiece taking cylinder 371; the discharging unit simultaneously adjusts the direction of the workpiece taking frame through the rotating cylinder 373, clamps the finished workpiece from the die cavity through the clamping cylinder 372, and then moves to the discharging area after being lifted by the workpiece taking cylinder 371 and turned by the rotating cylinder 373.

[0032] In addition, the electric control box on the third machine table 31 side is electrically connected with the inclined wedge mechanism, the driving elements of the push arm 3341 and the die sleeve 34, and the electrical elements of the feeding and discharging assembly 37.

[0033] In the second embodiment, a profile processing equipment for an aluminum alloy energy absorption box is provided. In order to facilitate the workpiece taking after punching, a traditional method is to set a ejector pin at a corresponding position on the bottom of the workpiece, and the workpiece is lifted as a whole by the force of the ejector pin. Since the energy absorption box has a hole structure on the surface, and the surface punching process is used for kinetic energy absorption, the setting of the ejector pin position is particularly critical. If the ejector pin is blocked in the mold cavity and acts on the stress area, the workpiece will be lifted, which will cause the energy absorption box to be slightly deformed locally. In order to avoid the defects of the ejector pin structure, referring to Figure 7 and Figure 8 , the embodiment adopts a structure of a separate outer die 36 and an inner die 35. In order to more clearly understand Figure 8 , referring to Figure 9 , a plurality of guide holes 311 are formed on the processing surface of the third machine table 31. The guide holes 311 are formed along the outer edge of the inner die 35, and the guide blocks 312 are formed between adjacent guide holes 311. The outer die 36 is provided with a guide groove 361 matched with the guide blocks 312, so as to slide and fit between the outer die 36 and the processing surface. A limiting plate 3312 connected with the bottom end of the outer die 36 is arranged below the processing surface.

[0034] Since the lifting disc 334 is connected with a spring telescopic rod 3311 for resetting the outer die 36, when the spring telescopic rod 3311 lifts the limiting plate 3312 to abut against the processing surface, the outer die 36 completes the resetting operation. The spring telescopic rod 3311 is a spring compression type telescopic rod. The spring telescopic rod 3311 is a rigid member in a free state due to its inherent characteristics, so that when the lifting disc 334 descends, the limiting plate 3312 can be pulled down by the spring telescopic rod 3311, so that the outer die 36 slides downward along the guide blocks 312 between the guide holes 311 formed on the processing surface through the guide groove 361, so as to expose the workpiece for taking.

[0035] Referring to Figure 9 and Figure 10, the third machine table 31 is connected with the base 331, the driving end of the lifting and rotating assembly 33 in the embodiment adopts a lifting disc 334, the bottom of a rotating disc 3310 is rotationally connected with the lifting disc 334, a spring telescopic rod 3311 is installed on the rotating disc 3310 and the telescopic end is fixedly connected with a limiting plate 3312, a pushing arm 3341 is arranged at the two side edges of the lifting disc 334, a base cylinder 332 is arranged between the base 331 and the intermediate supporting plate 333 so that the base cylinder 332 drives the intermediate supporting plate 333 to ascend and descend, an intermediate cylinder 335 is installed at the bottom end of the intermediate supporting plate 333 and an intermediate sliding block is installed through a support 337, a rack 336 is connected on the output end of the intermediate cylinder 335, the rack 336 is installed on one side with the intermediate sliding block, a rotating shaft 339 is installed at the middle of the intermediate supporting plate 333, a gear 338 is installed at the bottom end of the rotating shaft 339 and engages with the rack 336, the top end of the rotating shaft 339 is connected with the lifting disc 334 and a plurality of rollers are installed on the intermediate supporting plate 333 for supporting the rotation of the lifting disc 334.

[0036] When the base cylinder 332 extends, the output end pushes the intermediate supporting plate 333 to ascend in the vertical direction; the intermediate supporting plate 333 drives the lifting disc 334 to ascend synchronously through the rotating shaft 339 at the top end, finally lifts the pushing arms 3341 placed at the two sides of the lifting disc 334, so that the pushing arms 3341 can contact the jacks 324. The output end of the intermediate cylinder 335 is connected with the rack 336, when the intermediate cylinder 335 extends or retracts, the rack 336 reciprocatingly moves along the intermediate sliding track; the rack 336 engages with the gear 338 at the bottom end of the rotating shaft 339, the linear motion of the rack 336 drives the gear 338 to rotate; the gear 338 transmits the rotary motion to the lifting disc 334 at the top end through the rotating shaft 339, so as to drive the lifting disc 334 to rotate synchronously, thereby adjusting the angle position of the pushing arms 3341. During the rotation of the lifting disc 334, because the outer mold 36 is vertically slidably connected with the machining surface, and the limiting plate 3312 is limited by the outer mold 36 and is cut off from the power transmission between the rotating disc 3310 and the lifting disc 334, when the lifting disc 334 rotates, the outer mold 36 and the limiting plate 3312 are still in a static state, that is, the lifting disc 334 can only drive the outer mold 36 to ascend or descend.

[0037] The plurality of rollers mounted on the intermediate support plate 333 play a supporting role and also reduce friction during rotation of the jacking disc 334, i.e. when the jacking disc 334 rotates, the rollers roll with it, reducing the friction between the jacking disc 334 and the intermediate support plate 333, ensuring smooth rotation. In summary, the driving end of the jacking rotation assembly 33, i.e. the pushing arm 3341, rotates, facilitating movement of the pushing arm 3341 to below the two symmetrical top rods 324; and the driving end of the jacking rotation assembly 33 lifts, facilitating jacking of the two top rods 324 by the pushing arm 3341, respectively.

[0038] In this embodiment, in order to help the pushing arms 3341 on both sides of the jacking disc 334 accurately find the corresponding top rods 324, refer to Figure 10 A position sensor or an angle sensor is also mounted between the intermediate support plate 333 and the jacking disc 334. Taking the position sensor as an example, a travel switch can be provided on the upper end surface of the intermediate support plate 333, and a sensing block is provided on the lower end surface of the jacking disc 334. During calibration, the sensing block needs to be in contact with the travel switch when the pushing arm 3341 is located below any two top rods 324. By providing a set of sensing blocks and travel switches, when the jacking disc 334 is rotated to the position where the sensing block contacts the travel switch, it indicates that the pushing arm 3341 has reached below any two top rods 324. At this time, pushing the jacking disc 334 upward can lift the top rods 324 by the pushing arm 3341. The angle sensor is mounted on the rotating shaft 339 and is used to detect the rotation angle of the jacking disc 334. It should be noted that during the punching process, the base cylinder 332 and the intermediate cylinder 335 act alternately, and during the process of lifting the jacking disc 334, the intermediate cylinder 335 needs to first drive the gear 338 to rotate through the rack 336 to make the jacking disc 334 find the corresponding top rod 324, and then the base cylinder 332 drives the jacking disc 334 to lift the top rod 324 upward.

[0039] When the driving end of the jacking rotation assembly 33 is reset, the spring telescopic rods 3311 release the elastic force to drive the limiting plate 3312 to move upward, so that the outer mold 36 reversely slides along the guide block 312 to reset. It should be noted that when the jacking disc 334 moves upward, there is an idle stroke for the compression of the spring telescopic rods 3311. The idle stroke is manifested as the compression of the spring telescopic rods 3311 as the jacking disc 334 moves upward, but at this time the limiting plate 3312 is stationary, i.e. the outer mold 36 is in a stationary state. The limiting plate 3312 is connected to the bottom end of the outer mold 36, so as to limit the upward movement distance of the outer mold 36 when the outer mold 36 slides along the machining surface.

[0040] Refer to Figure 11The punching unit 32 of the embodiment comprises a fixed seat 325 and a support plate 328, the fixed seat 325 is provided with guide columns 326 and a plurality of guide rods 327, the end of the punching seat 322 is connected with one end of the guide columns 326 and the guide rods 327, the wedge mechanism comprises a matched wedge sliding block 3231 and a wedge sliding plate 3232, the support plate 328 is vertically fixed on the machining surface and is provided with a wedge sliding rail 3281, the wedge sliding plate 3232 is slidably connected with the support plate 328 through the wedge sliding rail 3281, the side surface of the wedge sliding block 3231 is connected with the other end of the guide columns 326 and the guide rods 327, the bottom end of the wedge sliding plate 3232 is connected with the jacking rod 324, and the bottom end of the jacking rod 324 is provided with a stop block 3242, the bottom end of the machining surface is provided with a fixed sleeve 329 matched with the jacking rod 324, springs are sleeved on the guide columns between the fixed seat 325 and the wedge sliding block 3231, and springs are also sleeved on the jacking rod 324 between the fixed sleeve 329 and the stop block 3242. During the punching process, the jacking disc 334 can ascend for a distance, so that the spring telescopic rod 3311 forms a pre-pressing state. Further, through the spring telescopic rods 3311, the jacking force can be continuously applied to the limiting plate 3312. During this period, the outer mold 36 is always in a stationary state, so as to ensure that the jacking disc 334 rotates and the outer mold 36 can always remain stationary during punching.

[0041] Further, the jacking rod 324 is further provided with a stop ring 3241. In combination Figure 11 The stop ring 3241 is located above the machining surface, when the jacking rotating assembly 33 drives the jacking arm 3341 to ascend and jacks the jacking rod 324, the jacking rod 324 drives the wedge mechanism to move the punching seat 322 transversely to complete the punching action; when the jacking arm 3341 is lowered and reset, the stop ring 3241 abuts against the machining surface to form a limit, at this time, the gap between the bottom end of the jacking rod 324 and the jacking arm 3341 is still reserved for the rotation of the jacking disc 334, which can ensure that the jacking disc 334 avoids mechanical interference with the jacking rod 324 when switching positions. In this way, through the rigid limiting action of the stop ring 3241, the descending limit position of the jacking rod 324 can be effectively controlled, and the risk of wedge mechanism jamming caused by excessive descent of the jacking arm 3341 can be eliminated; secondly, the reserved rotation gap enables the jacking disc 334 to rotate without obstruction, and in combination with the even number of symmetrically distributed punching units 32, the multi-position continuous punching operation can be performed, which greatly ensures the stability of the equipment operation.

[0042] Referring to Figure 12In order to avoid deformation of the energy absorption box in the punching process, a die sleeve 34 is arranged on the machining surface, and the die sleeve 34 is a U-shaped structure matched with the outer die 36. A first guide groove 341 is arranged on the die sleeve 34 and is in sliding fit with the punching head 321. A second guide groove 351 is arranged on the inner die 35. When the punching seat 322 is driven to move by the wedge mechanism, the punching head 321 is first pre-guided along the first guide groove 341, and then enters the die cavity through the communication structure of the guide groove 361 and the first guide groove 341 to punch. The die sleeve 34 is used to reduce the deviation of the outer die 36 during the up-down movement. The outer die 36 and the inner die 35 can support the energy absorption box from inside and outside during punching to avoid deformation of the hole. In addition, in the initial state, the punching head 321 is completely withdrawn into the first guide groove 341, and the first guide groove 341 forms full-stroke wrapping protection for the punching head 321. When punching, the first guide groove 341 on the die sleeve 34 can provide sufficient bending stiffness for the punching head 321.

[0043] Further, the pushing arm 3341 in the embodiment is an arch-shaped structure, and the thickness of the pushing arm 3341 gradually decreases from the inner end to the outer end. The arch-shaped structure disperses the jacking force into radial pressure and axial thrust through the arc-shaped surface, and cooperates with the gradually changing thickness design to form a variable cross-section mechanical model. When the jacking rotating assembly 33 drives the pushing arm 3341 to rise, the inner end thick wall section bears the main load and absorbs impact energy through elastic deformation, and the outer end thin wall section reduces inertia resistance by using the lightweight characteristic; during the pushing process, the arch-shaped surface and the bottom end of the jacking rod 324 always maintain surface contact state to avoid stress concentration causing the breaking of the pushing arm 3341.

[0044] In order to facilitate chip removal, a chip removal hole can be arranged on the machining surface of the embodiment, which is located in the area surrounded by the inner die 35. The waste chip after punching falls into the chip removal hole from the second guide groove 351. Correspondingly, a waste outlet corresponding to the chip removal hole is arranged on the limiting plate 3312. The waste chip is discharged downward through the chip removal hole and the waste outlet and falls on the upper surface of the rotating disc 3310. At this time, the waste chip can be quickly discharged from the upper surface of the rotating disc 3310 by the cleaning tool, and the chip removal operation is completed.

[0045] Finally, it should be pointed out that: the above is only the preferred embodiment of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A profile processing equipment for aluminum alloy energy-absorbing boxes, characterized in that, It includes a cutting device (1), a transfer device (2), and a punching device (3) that are set up and complete the workpiece transfer in sequence. The cutting equipment (1) includes a first machine table (11), on which a cutting groove (111) is provided. Above the cutting groove (111) is a pressure seat (14) for pressing the profile. On one side of the cutting groove (111) is a shaping machine (13) for straightening and positioning the profile, and on the other side is a guide channel for outputting the cut workpiece. The transfer device (2) includes a second machine base (21), which is provided with a conveyor channel consisting of two mounting plates (22). One end of the conveyor channel is connected to the guide channel, and a conveyor chain (23) is provided inside it. A flipping component (24) is provided at the end near the guide channel for receiving the workpiece and flipping it from a horizontal state to a vertical state. The cutting equipment (1) is provided with a loading and unloading assembly (37). The workpiece is transported to the punching equipment (3) through the conveyor, and the loading and unloading assembly (37) performs the loading and unloading operation.

2. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 1, characterized in that, The bottom of the pressure seat (14) is provided with a clearance groove (141) corresponding to the cutting groove (111). The pressure seat (14) is slidably connected to the upright frame (12) set on the first machine base (11) and is driven to lift by the pressure cylinder (18).

3. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 1, characterized in that, The guide channel is formed by two guide plates (17) set on the first machine base (11), and the side of the guide plate (17) facing the cutting groove (111) is open.

4. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 1, characterized in that, The flipping assembly (24) includes a rotatably mounted flipping frame (241), which has multiple circumferentially distributed support arms and rollers (242) on the support arms; the flipping frame (241) is mounted on the mounting plates (22) on both sides via a flipping shaft (243), and one end of the flipping shaft (243) is connected to a drive sprocket (244).

5. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 4, characterized in that, The conveyor chain (23) is linked with the flipping assembly (24). On the same side of the mounting plate (22), there is a first sprocket (26) that is flexibly connected to the flipping shaft (243) and a second sprocket (27) that serves as the driving wheel. The conveyor chain (23) is sleeved on the first sprocket (26) and the second sprocket (27).

6. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 1, characterized in that, The punching equipment (3) includes a third machine base (31), on which a mold cavity is provided and an even number of punching units (32) are arranged around the mold cavity. The two symmetrical punching units (32) share a lifting and rotating component (33) for driving.

7. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 6, characterized in that, Each of the punching units (32) includes a punching head (321), a punching seat (322), and a wedge mechanism. The punching seat (322) is slidably disposed, and its end is linked to a vertically disposed push rod (324) through the wedge mechanism. The lifting and rotating assembly (33) includes a lifting and rotating drive end, and push arms (3341) for pushing the push rod (324) are symmetrically disposed on the drive end.

8. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 7, characterized in that, The third machine base (31) is provided with an outer mold (36) that can slide vertically and an inner mold (35) that is fixedly set. The mold cavity is formed between the outer mold (36) and the inner mold (35). The driving end of the lifting and rotating assembly (33) is connected to the limiting plate (3312) connected to the bottom end of the outer mold (36) through a spring telescopic rod (3311).

9. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 6, characterized in that, The loading and unloading assembly (37) includes a horizontal plate (374) and a height adjustment cylinder (375) for driving its lifting and lowering. The horizontal plate (374) is provided with a loading unit and a unloading unit. Each unit includes a rotary cylinder (373), a pick-up cylinder (371), and a clamping cylinder (372). The loading unit is provided with a workpiece track (377) on one side that connects to the conveyor of the transfer equipment (2).

10. The profile processing equipment for aluminum alloy energy-absorbing boxes according to claim 7, characterized in that, The top rod (324) is provided with a retaining ring (3241) for limiting the position, and the push arm (3341) is an arched structure with its thickness gradually decreasing from the inner end to the outer end.

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