Aluminum alloy sheet continuous press die

Abstract

The present application belongs to the technical field of aluminum alloy stamping die, and particularly relates to a continuous stamping die for aluminum alloy plate, which comprises an upper die holder, a lower die holder and alignment sensors. The lower surface of the upper die holder is fixed with a pressure head assembly and an elastic block at intervals. An insulating cage opening towards the elastic block and a magnetic element fixed in the insulating cage are embedded in the upper die holder. The upper surface of the lower die holder is provided with die holder assemblies for pressing the aluminum alloy plate when engaging with the upper die holder, two groups of steel balls and elastic return members at intervals. Each group of two steel balls is rotatably installed with a limiting guide wheel for limiting the aluminum alloy plate to both sides and a rotating shaft surrounded by the limiting guide wheel. The lower end of the rotating shaft is connected to the elastic return member. The two groups of alignment sensors are respectively arranged on both sides of the aluminum alloy plate. In the stamping process, the decomposed action pushes the workpiece to the center, absorbs the shaking action of the workpiece in the punching process, and improves the precision of the continuous stamping finished product.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aluminum alloy stamping die, and particularly relates to a continuous stamping die for aluminum alloy plate. BACKGROUND

[0002] In the processing of automobile aluminum alloy parts, aluminum alloy plates are generally put into a punch to be punched and extruded. For example, aluminum alloy pull-stud buckles and mounting blocks, the upper die and the lower die of the stamping die can carry punches to punch holes or extrude and bend on the aluminum alloy plate. Since the aluminum alloy plate extends between the upper die and the lower die for a long distance, the extended part will rebound to a certain extent after being extruded, which is easy to cause deflection, and thus needs to be limited from both sides.

[0003] Some manufacturers choose to install a righting pin with a ring groove on both sides of the aluminum alloy plate in the forward direction, and the edges of the bent part are inserted into the ring groove respectively to realize righting without hindering the movement of the extended part.

[0004] However, on the aluminum alloy pull-stud buckle production line, the flanging of the workpiece upper foot plate is difficult to adapt to the ring groove, and the large span of punching, grooving and bending of the workpiece makes it shake after being cut, thereby reducing the precision of the continuous stamping finished product. SUMMARY

[0005] The application aims to provide a continuous stamping die for aluminum alloy plate, which can push the workpiece to the center during the stamping process, absorb the shaking action of the workpiece during the punching process, and actively and quickly right the workpiece in the second half of the decomposed action to improve the precision of the continuous stamping finished product.

[0006] The technical scheme adopted by the application is as follows:

[0007] A continuous stamping die for aluminum alloy plate comprises:

[0008] An upper die seat, a pressure head assembly and an elastic block are fixed on the lower surface of the upper die seat at intervals, an insulating cage opening towards the elastic block is embedded in the upper die seat, and a magnetic element is fixed in the insulating cage;

[0009] A lower die seat, a die seat assembly for pressing the aluminum alloy plate when the upper die seat is engaged, two groups of steel balls, and an elastic return piece are arranged on the upper surface of the lower die seat at intervals, two steel balls in each group are rotatably installed below the steel balls, a limiting guide wheel for limiting the aluminum alloy plate to both sides is installed below the steel balls, and a rotating shaft surrounded by the limiting guide wheel is connected to the elastic return piece at the lower end of the rotating shaft;

[0010] Alignment sensors, two alignment sensors are arranged on both sides of the aluminum alloy plate respectively, the detection beams of the alignment sensors pass through the interval between the upper die seat and the lower die seat, and the tail parts of the alignment sensors are fixed with cantilevers outside the upper die seat and the lower die seat respectively.

[0011] When continuously punching, the magnetic elements attract the steel balls intermittently, drive the elastic blocks to clamp the aluminum alloy plate, and push the limiting guide wheels to roll to the two sides while extruding the ends of the aluminum alloy plate to the center to prevent shaking;

[0012] When clamping, the elastic return elements are compressed to link the buffer of the steel balls and the limiting guide wheels, and when demolding, the elastic return elements rebound to link the steel balls to lift the aluminum alloy plate.

[0013] As a preferred solution, the die holder assembly includes two open opposite alignment clamping seats, two side-by-side V-shaped clamping seats, two side-by-side concave clamping seats, and a central convex clamping seat arranged in sequence along the center line of the lower die holder. One set of two steel balls is arranged between the alignment clamping seat and the V-shaped clamping seat, and the other set of two steel balls is arranged on the side away from the alignment clamping seat of the convex clamping seat. After the aluminum alloy plate is fed into the continuous punching die, its two sides pass through the openings of the two alignment clamping seats respectively to obtain vertical support, so that the punching action of Y-shaped holes and edge holes can be performed, and then the V-shaped foot is supported through the V-shaped clamping seat, the flange is supported through the concave clamping seat, and the convex clamping seat limits the folding foot to the two sides.

[0014] As a preferred solution, the elastic blocks are set as honeycomb-shaped silica gel, and the magnetic elements are set as electromagnets. When the electromagnets are powered on, they attract the steel balls and the elastic blocks to clamp the aluminum alloy plate and transfer heat along the elastic blocks to heat the aluminum alloy plate, for reducing the hardness of the aluminum alloy plate at the punched position. The electromagnets remain powered on, which has the advantages of being able to attract the steel balls to lift the aluminum alloy plate, realizing the suspension of the aluminum alloy plate on the die holder assembly, and being able to save energy by powering off when not needed, and buffering the magnetic elements through the deformation of the elastic blocks to prevent mechanical damage.

[0015] As a preferred solution, the upper die holder is fixed with four downward-opening guide cylinders at the four corners, and the lower die holder is fixed with air springs inserted into the guide cylinders at the four corners.

[0016] As a preferred solution, the punch assembly comprises a first punch arranged in the middle of the two alignment clamping seats along the middle line of the upper die holder, a second punch arranged towards the V-shaped clamping seat and the alignment clamping seat, a first wedge-shaped punch arranged opposite to the V-shaped clamping seat, a second wedge-shaped punch arranged opposite to the concave clamping seat, and a concave punch arranged opposite to the convex clamping seat. In the punching action of the Y-shaped hole and the edge hole, the first punch and the second punch are designed as a double-angle shape distributed on both sides of the middle line of the aluminum alloy plate, so as to punch out two Y-shaped holes and edge holes at the same time, and then the third punch is used to punch out the edge groove. Although the edge groove is a technical means familiar to those skilled in the art, it is still necessary to separate two adjacent workpieces, and then the first wedge-shaped punch is used to press the aluminum alloy into the V-shaped clamping seat to press out the V-shaped leg, the second wedge-shaped punch is used to press the aluminum alloy into the concave clamping seat to press out the flange, and the concave punch opening is sleeved with the convex clamping seat, and the V-shaped leg with the flange is extruded and bent into a folded leg.

[0017] As a preferred solution, the lower die holder is provided with a slag discharge hole opposite to the first punch and the second punch, and a support plate is fixed inside the slag discharge hole along the direction of the aluminum alloy plate, and two waste slag hoppers are fixed below the support plate and opposite to the first punch and the second punch, respectively.

[0018] As a preferred solution, the lower surface of the upper die holder is further provided with two top punching cutters fixed thereon in a spaced manner, the upper surface of the lower die holder is further provided with two bottom punching cutters fixed thereon in a staggered manner with the top punching cutters, a waste edge falling hole is arranged between the two bottom punching cutters on the lower die holder, and two workpiece chutes are fixed on the end surface of the lower die holder and located on both sides of the two bottom punching cutters.

[0019] As a preferred solution, the elastic return member comprises two square columns fixed side by side on the upper surface of the lower die holder, an elastic sleeve in contact with the lower die holder is sleeved outside the square columns, a metal bushing is sleeved outside the square columns, a torsion spring is spirally arranged outside the metal bushing, a swing arm is connected between the outside of the metal bushing and the lower end of the rotating shaft through the torsion spring, the swing arm has a ring shape at both ends, one ring of the swing arm is sleeved around the lower end of the rotating shaft, and the other ring is sleeved around the outside of the metal bushing. Once the mold is loaded, the elastic sleeve is depressed for buffering, and when the load is removed, the elastic sleeve rebounds to lift the steel ball and the limiting guide wheel, so that the steel ball and the limiting guide wheel float synchronously with the aluminum alloy plate, and when the workpiece advances, the limiting guide wheel is impacted to drive the swing arm to rotate in a positive direction by a certain angle relative to the metal bushing and compress the torsion spring, so that the two limiting guide wheels can be immersed in the workpiece, and after being separated, the swing arm can be reversed by a certain angle through the rebound of the torsion spring to contact the subsequent workpiece.

[0020] As a preferred solution, the upper ends of the two adjacent square columns are fixed with two circular table members and a girder frame located between the two circular table members, and the girder frame is flush with the support plate.

[0021] As a preferred solution, the scrap edge falling hole lower opening is fixed with a limiting baffle, and a scrap edge bucket fixedly connected with the limiting baffle, the scrap edge bucket is staggered with the workpiece chute.

[0022] The present application has the following technical effects:

[0023] In the present application, the decomposed action interval is provided with the limiting guide wheel with two direction degrees of freedom, the workpiece is pushed to the center, the elastic reset member is pressed to buffer, and the elastic reset member can be lifted without being separated from the workpiece, the shaking action of the workpiece in the punching process is absorbed, especially in the second half of the decomposed action, the workpiece can be actively and quickly supported to improve the precision of the continuous punching product.

[0024] The elastic block is provided as a honeycomb-shaped silica gel, and the magnetic element is provided as an electromagnet, the electromagnet attracts the steel ball and the elastic block to clamp the aluminum alloy plate when electrified, and the heat is transferred along the elastic block to heat the aluminum alloy plate, so as to reduce the hardness of the punched aluminum alloy plate, the electromagnet is kept in the electrified state, which has the advantages of attracting the steel ball to lift the aluminum alloy plate, realizing the suspension of the aluminum alloy plate on the die seat assembly, and saving energy by turning off the power when not needed, and buffering the magnetic element through the deformation of the elastic block to prevent mechanical damage.

[0025] Once the mold is loaded, the elastic sleeve is pressed to buffer, when the load is removed, the elastic sleeve rebounds to lift the steel ball and the limiting guide wheel, the steel ball and the limiting guide wheel are synchronized with the aluminum alloy plate, when the workpiece advances, the limiting guide wheel is hit to drive the swing arm to rotate relative to the metal bushing by a certain amplitude, and the torsional spring is compressed, the two limiting guide wheels are conveniently immersed in the workpiece, and the swing arm can be reversed by a certain amplitude through the rebound of the torsional spring after being separated, and the subsequent workpiece can be contacted. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a front view of an aluminum alloy plate continuous punching die of the present application;

[0027] Figure 2 is a schematic view of the aluminum alloy plate processed into an aluminum alloy rib buckle of the present application;

[0028] Figure 3 is a bottom view of the upper die seat of the present application;

[0029] Figure 4 is a top view of the lower die seat of the present application;

[0030] Figure 5 is a bottom view of the lower die seat of the present application;

[0031] Figure 6 is an exploded view of the insulating cage, the magnetic element and the elastic block of the present application;

[0032] Figure 7 is a plan view of the V-shaped clamping seat of the present application;

[0033] Figure 8 is a plan view of the concave clamping seat of the present application;

[0034] Figure 9 is a plan view of the convex clamping seat of the present application;

[0035] Figure 10 is a bottom view of the first punch of the present application;

[0036] Figure 11 is a bottom view of the second punch of the present application;

[0037] Figure 12 is a bottom view of the concave wedge of the present application;

[0038] Figure 13 is a plan view of the bottom punching head of the present application;

[0039] Figure 14 is a bottom view of the top punching head of the present application;

[0040] Figure 15 is a front view of the elastic return member support circular table member and girder frame of the present application;

[0041] Figure 16 is an exploded view of the elastic return member of the present application.

[0042] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0043] 1, upper die holder; 2, insulating cage; 3, magnetic element; 4, elastic block; 5, lower die holder; 6, steel ball; 7, rotating shaft; 8, limiting guide wheel; 9, alignment sensor; 10, cantilever; 11, alignment clamping seat; 12, V-shaped clamping seat; 13, concave clamping seat; 14, convex clamping seat; 15, guide cylinder; 16, air spring; 17, first punch; 18, second punch; 19, first wedge; 20, second wedge; 21, concave wedge; 22, slag discharging hole; 23, support plate; 24, waste slag hopper; 25, bottom punching head; 26, top punching head; 27, waste edge falling hole; 28, workpiece chute; 29, swing arm; 30, square column; 31, elastic sleeve; 32, metal bushing; 33, torsional spring; 34, circular table member; 35, girder frame; 36, limiting baffle; 37, waste edge hopper; 38, waste edge. DETAILED DESCRIPTION

[0044] In order to make the objects and advantages of the present application more clear, the following will specifically describe the present application in conjunction with examples. It should be understood that the following description is only used to describe one or several specific embodiments of the present application, and does not strictly limit the scope of protection of the present application.

[0045] As shown in Figures 1-16 , a continuous stamping die for aluminum alloy sheet can be applied in an aluminum alloy pull-stud production line, comprising an upper die seat 1, a lower die seat 5 and a positioning sensor 9, mainly using automatic feeding mode such as a conveyor belt, a feeding roller and the like to feed the aluminum alloy sheet into the upper die seat 1 and the lower die seat 5, control the short stop of the aluminum alloy sheet, and fix a pressure head assembly on the lower surface of the upper die seat 1 at intervals, and fix a die seat assembly for pressing the aluminum alloy sheet when the upper die seat 1 is engaged on the upper surface of the lower die seat 5, stamp the aluminum alloy sheet through the pressure head assembly and the die seat assembly, sequentially stamp out Y-shaped holes, side holes and side grooves, and then sequentially bend out V-shaped feet, flanges and folded feet, and finally cut off the scrap edge 38 to produce a pair of workpieces (as shown in Figure 2 ).

[0046] As an optional embodiment, in order to maintain the balance of the continuous stamping die, the lower die seat 5 is fixed at the feeding station, and the upper die seat 1 is suspended above the lower die seat 5 through a hydraulic system, and is lowered to cooperate with the lower die seat 5 to stamp the aluminum alloy sheet during the short stop of feeding, so that the stamping is carried out at intervals and the aluminum alloy sheet is fed at a distance of one station each time.

[0047] Referring to the accompanying Figure 1 , Figure 3 and Figure 4 , each decomposed action of the stamping of the aluminum alloy sheet needs to be supported, and for this purpose, the die seat assembly of the present embodiment comprises two open positioning clamping seats 11 arranged in sequence along the center line of the lower die seat 5, two side-by-side V-shaped clamping seats 12 (as shown in Figure 7 ), two side-by-side concave clamping seats 13 (as shown in Figure 8 ) and a central convex clamping seat 14 (as shown in Figure 9 ), after the aluminum alloy sheet is fed into the continuous stamping die, its two sides pass through the openings of the two positioning clamping seats 11 respectively to obtain vertical support, so that the punching actions of the Y-shaped hole and the side hole can be carried out, and then the V-shaped feet are supported by the V-shaped clamping seats 12, the flanges are supported by the concave clamping seats 13, and the convex clamping seat 14 limits the folded feet on both sides, and the positioning clamping seat 11, the V-shaped clamping seat 12, the concave clamping seat 13 and the convex clamping seat 14 are fixed by bolts for the convenience of replacement and maintenance.

[0048] Referring to the accompanying Figure 1 , Figure 3 and Figure 4, different actions need to make the required shape in the decomposition action, each action is designed separately, the punch assembly of the embodiment includes first punch 17 (as shown in Figure 10 ), second punch 18 (as shown in Figure 11 ) towards the V-shaped seat 12 between the alignment clamp 11 and the V-shaped seat 12, the third punch is square, the first wedge-shaped punch 19 is opposite to the V-shaped seat 12, the second wedge-shaped punch 20 is opposite to the concave seat 13, and the concave punch 21 is opposite to the convex seat 14 (as shown in Figure 12 ), in the punching action of Y-shaped hole and edge hole, the first punch 17 and the second punch 18 are designed as double-angle distributed on both sides of the center line of the aluminum alloy plate, so as to punch out two Y-shaped holes and edge holes at the same time, and then pass to the third punch to punch out the edge groove. Although the edge groove belongs to the technical means familiar to those skilled in the art, it is still necessary to separate two adjacent workpieces, and then pass through the first wedge-shaped punch 19 to press the aluminum alloy into the V-shaped seat 12 to press out the V-shaped foot, pass through the second wedge-shaped punch 20 to press the aluminum alloy into the concave seat 13 to press out the flange, and clamp the opening of the concave punch 21 with the convex seat 14. Extruding the V-shaped foot with the flange into a folded foot. For the convenience of replacement and maintenance, the first punch 17, the second punch 18, the third punch, the first wedge-shaped punch 19, the second wedge-shaped punch 20 and the concave punch 21 are fixed by bolts.

[0049] Further, in order to punch or groove quickly and accurately, the first punch 17, the second punch 18 and the third punch can also be moved by hydraulic cylinder, especially in the short stop time after the mold is closed. After the other parts of the aluminum alloy plate are pressed tightly, the first punch 17, the second punch 18 and the third punch are driven by hydraulic feeding to punch or groove, preventing the aluminum alloy plate from being pulled or shaken.

[0050] Referring to the accompanying Figure 4 , Figure 15 and Figure 16 , the edge of the punched position of the aluminum alloy plate is narrowed, so that two groups of steel balls 6 and elastic return members are arranged on the upper surface of the lower die seat 5. One group of two steel balls 6 is arranged between the alignment clamp 11 and the V-shaped seat 12 for supporting the aluminum alloy plate during the action of crossing the edge groove and pressing the V-shaped foot. The other group of two steel balls 6 is arranged on the side of the convex seat 14 away from the alignment clamp 11 for supporting the upstream area of the cut position of the aluminum alloy plate. Each group of two steel balls 6 is rotatably installed below the two steel balls 6 for limiting the aluminum alloy plate to the two sides. The rotating shaft 7 surrounded by the limiting guide wheel 8 can keep the steel ball 6 and the limiting guide wheel 8 suspended. The lower end of the rotating shaft 7 is connected to the elastic return member, so that the steel ball 6 and the limiting guide wheel 8 can drive the rotating shaft 7 to press the elastic return member at the same time, leaving a vertical displacement buffer zone, which will not hinder the aluminum alloy plate from entering the die seat assembly.

[0051] Wherein, the workpiece lower wall sticks to the steel ball 6, the inner side sticks to the limiting guide wheel 8, and the sliding advances, and each rotating shaft 7 outside is equipped with three limiting guide wheels 8 through the bearing seat, and three rotating joint forks supporting the limiting guide wheel 8 are welded outside the bearing seat, so that the limiting guide wheel 8 can revolve around the rotating shaft 7 while revolving with the friction of the workpiece, and has two degrees of freedom, so that the workpiece can be pushed to the center in two directions and can be lifted with the elastic return member, and will not be separated from the workpiece, and can absorb the shaking effect of the workpiece in the punching process, especially can actively and quickly support the workpiece in the second half of the disassembly action, and the precision of the continuous punching product is improved.

[0052] Referring to the drawings Figure 3 , Figure 6 and Figure 15 , in the action of supporting the workpiece by the steel ball 6, the elastic block 4 opposite to the steel ball 6 is bonded to the lower surface of the upper die holder 1, for clamping the aluminum alloy plate with the steel ball 6 after the lower pressing of the upper die holder 1, and the insulation cage 2 opening towards the elastic block 4 is embedded in the inside of the upper die holder 1, and the magnetic element 3 is bonded in the inside of the insulation cage 2, the steel ball 6 of magnetic metal material is better clamped by the magnetic field of the magnetic element 3 in the insulation cage 2, and when demolding, the steel ball 6 can slightly lift the aluminum alloy plate, so that the aluminum alloy plate is suspended above the die holder assembly, and the height is not more than one centimeter.

[0053] Further, during continuous punching, the magnetic element 3 intervally attracts the steel ball 6 and drives the elastic block 4 to clamp the aluminum alloy plate, and at the same time, the limiting guide wheel 8 is rolled to the two sides to press the end of the aluminum alloy plate to the center to prevent shaking.

[0054] Referring to the drawings Figure 1 , when supporting the aluminum alloy plate, limiting detection is very necessary, two groups of alignment sensors 9 are respectively arranged on the two sides of the aluminum alloy plate, the detection beams are distributed on the two sides of the folded foot through the interval between the upper die holder 1 and the lower die holder 5, once the aluminum alloy plate is inclined, the detection beam of the adjacent side will be blocked, triggering an alarm signal, which is sent to the industrial computer of the processing station through the signal converter, so that the steel ball 6, the rotating shaft 7, the limiting guide wheel 8 and the elastic return member can be conveniently stopped and calibrated in time, and the cantilever 10 independently outside the upper die holder 1 and the lower die holder 5 is fixed at the tail of the alignment sensor 9 through the screw, so as to avoid blocking the die.

[0055] Referring to the drawings Figure 1 , Figure 3 and Figure 4To facilitate smoother mold closing, guide cylinders 15 with downward openings are bolted to the four corners of the upper mold base 1, and air springs 16 that engage with the guide cylinders 15 are bolted to the four corners of the lower mold base 5. The air springs 16 are inserted into the guide cylinders 15 to straighten them at the four corners, and the compressed air springs 16 provide buffering and shock absorption. At the same time, the elastic reset component is compressed and linked to the buffer steel ball 6 and the limiting guide wheel 8. During demolding, the elastic reset component rebounds and links the steel ball 6 to lift the aluminum alloy sheet. The response is rapid and significantly reduces the sliding friction between the aluminum alloy sheet and the mold base assembly.

[0056] See attached document Figure 4 and Figure 5 During the punching action of the Y-shaped hole and the side hole, waste residue is generated. In this embodiment, a slag discharge hole 22 is provided on the lower die base 5, which is directly opposite the first punch 17 and the second punch 18, so that the waste residue falls along the slag discharge hole 22. A support plate 23 is welded inside the slag discharge hole 22 along the traveling direction of the aluminum alloy plate, and two waste residue hoppers 24 are welded below it, which are directly opposite the first punch 17 and the second punch 18 respectively. The waste residue is received by the waste residue hoppers 24 and guided to slide down obliquely to avoid accumulation at the lower die base 5.

[0057] See attached document Figure 3 , Figure 6 and Figure 15 As an optional embodiment, the elastic block 4 is made of honeycomb-shaped silicone, and the magnetic element 3 is made of an electromagnet. During the mold closing process, when the electromagnet is energized, it attracts the steel ball 6 and the elastic block 4 to clamp the aluminum alloy sheet and transfers heat along the elastic block 4 to heat the aluminum alloy sheet, thereby reducing the hardness of the stamped part of the aluminum alloy sheet. Moreover, during the demolding process, the electromagnet remains energized until the upper mold base 1 is lifted and reset, and then the power is turned off. The advantage of this is that it can attract the steel ball 6 to lift the aluminum alloy sheet, so that the aluminum alloy sheet is suspended on the mold base assembly. It can also save energy by turning off the power when not needed, and the deformation of the elastic block 4 can buffer the magnetic element 3 to prevent mechanical damage.

[0058] See attached document Figure 15 and Figure 16Due to the friction between the aluminum alloy plate continuous stamping and the elastic return element, the elastic return element of the embodiment includes two square columns 30 welded side by side on the upper surface of the lower die seat 5, at this time the square columns 30 are opposite to the middle of the aluminum alloy plate, and an elastic sleeve 31, a metal bushing 32 and a torsion spring 33 are sleeved outside the square columns 30 and in contact with the lower die seat 5, they are all arranged below the workpiece, so as not to scratch the workpiece, and a swing arm 29 is connected between the outside of the metal bushing 32 and the lower end of the rotating shaft 7 through the torsion spring 33, the two ends of the swing arm 29 are annular, one of which is sleeved on the lower end of the rotating shaft 7 for supporting the steel ball 6 and the limiting guide wheel 8 in suspension, and the other is sleeved on the outside of the metal bushing 32, once the load is applied, the elastic sleeve 31 is depressed for buffering, when the load is removed, the elastic sleeve 31 rebounds to lift the steel ball 6 and the limiting guide wheel 8, so that the steel ball 6 and the limiting guide wheel 8 float synchronously with the aluminum alloy plate, and when the workpiece advances, the limiting guide wheel 8 is impacted to drive the swing arm 29 to rotate positively relative to the metal bushing 32 by a certain amplitude and compress the torsion spring 33, so that the two limiting guide wheels 8 can be immersed in the inside of the workpiece, and after being separated, the swing arm 29 can be reversed by a certain amplitude through the rebound of the torsion spring 33, so as to contact the subsequent workpiece.

[0059] Referring to the accompanying drawings Figure 15 and Figure 16 , two square columns 30 are welded on the upper end of the two adjacent square columns 30, and a truss 35 is located between the two circular table pieces 34, the truss 35 is flush with the support plate 23, and is used to support the workpiece in the second half of the stroke, so as to facilitate the aluminum alloy plate to remain horizontal.

[0060] Referring to the accompanying drawings Figure 4 , Figure 13 and Figure 14 , in order to cut off the scrap edge 38, the upper surface of the lower die seat 5 is also fixed with two spaced top punching heads 26 through bolts, and the upper surface of the lower die seat 5 is also fixed with two bottom punching heads 25 through bolts, the two bottom punching heads 25 are staggered with the top punching heads 26, the two sides of the scrap edge 38 are clamped and stamped by the top punching heads 26 and the bottom punching heads 25, so as to separate from the workpiece, and the scrap edge 38 is collected independently, a scrap edge falling hole 27 is formed between the two bottom punching heads 25 on the lower die seat 5, which is used to guide the scrap edge 38 to slide down, and two workpiece sliding grooves 28 are fixed on the end surface of the lower die seat 5 through bolts, which are located on both sides of the two bottom punching heads 25, and synchronously receive the workpieces cut off on both sides.

[0061] Referring to the accompanying drawings Figure 4 and Figure 5 , in order to prevent the scrap edge 38 from flying, a limiting baffle 36 is fixed at the opening below the scrap edge falling hole 27 through bolts, and a scrap edge bucket 37 is connected with the limiting baffle 36 through bolts, the scrap edge 38 slides down along the scrap edge bucket 37, the scrap edge bucket 37 drives the scrap edge 38 to be staggered with the workpiece sliding groove 28, and the scrap edge 38 is collected independently without subsequent sorting.

[0062] The working principle of the present application is that when the upper die holder 1 and the lower die holder 5 are closed, the aluminum alloy plate is punched by the pressure head assembly and the die holder assembly, and Y-shaped holes, edge holes and edge grooves are punched out in sequence, and then V-shaped feet, flanges and folded feet are bent out in sequence.

[0063] During the punching process, the lower wall of the workpiece is attached to the steel ball 6, the elastic sleeve 31 is pressed down for buffering, the inner side of the workpiece is attached to the limiting guide wheel 8, and the workpiece slides forward. At this time, the limiting guide wheel 8 rotates with the friction of the workpiece while revolving around the rotating shaft 7, having two degrees of freedom in two directions, so as to push the workpiece to the center, and also can be lifted with the elastic return member, without being separated from the workpiece, absorbing the shaking effect of the workpiece during the punching process, especially actively and quickly supporting the workpiece during the second half of the decomposition action.

[0064] When the load is removed, the elastic sleeve 31 rebounds to lift the steel ball 6 and the limiting guide wheel 8, so that the steel ball 6 and the limiting guide wheel 8 float synchronously with the aluminum alloy plate, and when the workpiece advances, the limiting guide wheel 8 hits the swing arm 29 to rotate relative to the metal bushing 32 by a certain amplitude, and compresses the torsion spring 33, so that the two limiting guide wheels 8 can be immersed in the workpiece, and also can be reversed by a certain amplitude through the rebound of the torsion spring 33 after being separated, so as to contact the subsequent workpiece.

[0065] Finally, the top punching head 26 and the bottom punching head 25 are engaged to punch the waste edge 38 on both sides, so as to separate from the workpiece, the workpiece chute 28 is used to receive the cut workpiece, and the waste edge bucket 37 is used to drive the waste edge 38 to be staggered with the workpiece chute 28, so as to be collected separately without subsequent sorting.

[0066] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. An aluminum alloy sheet continuous press die characterized by, The utility model provides a continuous stamping device for aluminum alloy plate, which comprises the following parts: an upper die holder (1) with a pressure head assembly and an elastic block (4) fixed on the lower surface, an insulation cage (2) embedded in the interior of the upper die holder (1) and opening towards the elastic block (4), and a magnetic element (3) fixed in the interior of the insulation cage (2); a lower die holder (5) with a die holder assembly for pressing the aluminum alloy plate when engaging with the upper die holder (1), two groups of steel balls (6), and a spring return, two steel balls (6) in each group are rotatably installed below the limiting guide wheel (8) for limiting the aluminum alloy plate on both sides, and the rotating shaft (7) surrounded by the limiting guide wheel (8) is connected to the spring return at the lower end; a positioning sensor (9) arranged on both sides of the aluminum alloy plate, and the detection beam of the positioning sensor (9) passes through the interval between the upper die holder (1) and the lower die holder (5), and the tail of the positioning sensor (9) is fixed with a cantilever (10) outside the upper die holder (1) and the lower die holder (5); when continuously stamping, the magnetic element (3) attracts the steel ball (6) and drives the elastic block (4) to clamp the aluminum alloy plate, and the limiting guide wheel (8) is rolled to extrude the aluminum alloy plate to the middle; when the mold is closed, the spring return is compressed to buffer the steel ball (6) and the limiting guide wheel (8), and when the mold is opened, the spring return rebounds to lift the aluminum alloy plate.

2. The continuous press die for an aluminum alloy sheet according to claim 1, characterized by: The die holder assembly comprises two open positioning clamping seats (11) facing each other along the center line of the lower die holder (5), two V-shaped clamping seats (12) arranged side by side, two concave clamping seats (13) arranged side by side, and a convex clamping seat (14) arranged in the middle, one group of two steel balls (6) is arranged between the positioning clamping seat (11) and the V-shaped clamping seat (12), and the other group of two steel balls (6) is arranged on the side of the convex clamping seat (14) away from the positioning clamping seat (11).

3. The continuous press tool for an aluminum alloy sheet according to claim 1, characterized by: The elastic block (4) is a honeycomb-shaped silica gel, and the magnetic element (3) is an electromagnet, which attracts the steel ball (6) and the elastic block (4) to clamp the aluminum alloy plate and transfers heat along the elastic block (4) to heat the aluminum alloy plate, so as to reduce the hardness of the stamped part of the aluminum alloy plate.

4. The continuous stamping die for an aluminum alloy sheet according to claim 1, characterized by: The upper die holder (1) is fixed with a downward-opening guide cylinder (15) at each corner, and the lower die holder (5) is fixed with an air spring (16) inserted into the guide cylinder (15) at each corner.

5. The continuous stamping die for an aluminum alloy sheet according to claim 2, characterized by: The punch assembly comprises a first punch (17) arranged in the middle of the two alignment clamping seats (11), a second punch (18) arranged towards the gap between the alignment clamping seat (11) and the V-shaped clamping seat (12), a first wedge-shaped punch (19) arranged opposite to the V-shaped clamping seat (12), a second wedge-shaped punch (20) arranged opposite to the concave clamping seat (13), and a concave punch (21) arranged opposite to the convex clamping seat (14) along the middle line of the upper die seat (1) in sequence. The first punch (17) and the second punch (18) are double-angle shapes distributed on both sides of the middle line of the aluminum alloy plate. The opening of the concave punch (21) is sleeved with the convex clamping seat (14).

6. The continuous press tool for an aluminum alloy sheet according to claim 5, characterized by: The lower die seat (5) is provided with a slag discharge hole (22) opposite to the first punch (17) and the second punch (18). The inside of the slag discharge hole (22) is fixed with a support plate (23) along the direction of the aluminum alloy plate, and the lower part is fixed with two waste slag hoppers (24) opposite to the first punch (17) and the second punch (18) respectively.

7. The continuous stamping die for an aluminum alloy sheet according to claim 1, characterized by: The lower surface of the upper die seat (1) is also fixed with two top punch cutters (26) at intervals. The upper surface of the lower die seat (5) is also fixed with two bottom punch cutters (25) staggered with the top punch cutters (26). The lower die seat (5) is provided with a scrap edge falling hole (27) between the two bottom punch cutters (25). The end surface of the lower die seat (5) is fixed with two workpiece chutes (28) on both sides of the two bottom punch cutters (25).

8. The continuous stamping die for an aluminum alloy sheet according to claim 6, characterized by: The elastic return member comprises two square columns (30) fixed side by side on the upper surface of the lower die seat (5). The outside of the square column (30) is sleeved with an elastic sleeve (31) in contact with the lower die seat (5), a metal bushing (32), and a torsional spring (33) spiraled outside the metal bushing (32). The outside of the metal bushing (32) and the lower end of the rotating shaft (7) are connected by the torsional spring (33). The two ends of the swing arm (29) are annular. One ring of the swing arm (29) is sleeved on the lower end of the rotating shaft (7), and the other ring is sleeved on the outside of the metal bushing (32).

9. The continuous stamping die for an aluminum alloy sheet according to claim 8, characterized by: The upper ends of the two adjacent square columns (30) are fixed with two circular table members (34) and a girder frame (35) between the two circular table members (34). The girder frame (35) is flush with the support plate (23).

10. The continuous stamping die for an aluminum alloy sheet according to claim 7, characterized by: The lower opening of the scrap edge falling hole (27) is fixed with a limiting baffle (36) and a scrap edge hopper (37) fixedly connected with the limiting baffle (36). The scrap edge hopper (37) is staggered with the workpiece chute (28).

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