Flanging punch forming die

Abstract

The invention relates to the field of stamping dies, in particular to a flanging stamping forming die which comprises a lower die base, two fixed die pieces which are symmetrically arranged in the front-back direction are fixedly installed on the upper side of the lower die base, and a movable die block is arranged on the upper side of the lower die base and located between the two fixed die pieces in a front-back sliding mode. The die further comprises a feeding mechanism used for rapidly feeding and discharging the lifting lugs and a driving mechanism which conducts efficient stamping and flanging on the lifting lugs through working faces on the two sides of the movable die block by moving the movable die block back and forth in a reciprocating mode. The movable module reciprocates back and forth through the driving mechanism, lifting lugs are alternately punched through the working faces on the two sides of the movable module, flanging forming of two workpieces can be completed through a single reciprocating stroke, the production efficiency is greatly improved, and the large-batch requirement of automobile accessories is met.

Description

Technical Field

[0001] The present invention relates to the field of stamping dies, and specifically to a flanging stamping and forming die. Background Art

[0002] The automotive hanger is a key connecting component of a vehicle. It is usually in a plate-like structure and needs to be processed into a flanging with a specific shape through a flanging stamping process. Two connecting holes for connecting and assembling with other components are provided on the hanger.

[0003] Currently, for the flanging stamping of hangers, traditional single-action dies are mostly used. In such dies, the moving die can only stamp and form one hanger in one reciprocating motion. In specific operations, workers need to manually place the blank plate of the hanger into the die cavity and adjust the position by visual inspection or a simple fixture to ensure that the blank plate of the hanger matches the die cavity. Then, the operator starts the press to drive the moving die to perform flanging stamping on the blank plate of the hanger.

[0004] However, in the stamping processing method using traditional dies, the moving die can only process a single workpiece for each reciprocating movement, and the double-sided working surfaces of the moving die cannot be fully utilized, resulting in the production efficiency being difficult to meet the large-volume demand of automotive parts. Moreover, since the traditional die has only one stamping cavity, it is necessary to take out the stamped hanger each time before the blank plate of the hanger to be processed can be placed inside the die, and the feeding time of stamping processing cannot be fully utilized, reducing the processing efficiency.

[0005] In addition, when personnel load and unload workpieces on traditional dies, they need to frequently contact the die cavity, which is prone to safety accidents such as pinching due to operation errors. Moreover, in the traditional method of positioning the connecting holes of the hanger with fixed inserting rods, after repeated use, the fixed inserting rods will wear and reduce the matching accuracy with the hanger, resulting in a decrease in positioning accuracy and an increase in the rejection rate. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a flanging stamping and forming die, including a lower die base. Two fixed die parts arranged symmetrically front and back are fixedly installed on the upper side of the lower die base. A moving die block is slidably arranged front and back between the two fixed die parts on the upper side of the lower die base. The die further includes a feeding mechanism for quickly loading and unloading the hanger and a driving mechanism for alternately performing high-efficiency flanging stamping on the hanger by reciprocating the moving die block back and forth to make the double-sided working surfaces of the moving die block face the hanger.

[0007] The driving mechanism includes an upper die base slid up and down on the upper side of the lower die base through a connecting component. The upper die base drives the moving module to reciprocate back and forth through the transmission of the connecting component with the up and down movement of the press. Two clamping blocks arranged front and back are slidably arranged on the upper side of the lower die base in the front and back directions. A positioning component for accurately positioning the lug is arranged on the clamping block. The two clamping blocks are respectively located between the front and back sides of the moving module and the fixed die part.

[0008] The material feeding mechanism includes a rotating part rotatably arranged on the upper sides of the two fixed die parts together. A limiting component for aligning the lug is arranged on the rotating part. The upper die base drives the rotating part to rotate left and right repeatedly through a transmission component, so that the lugs fall one by one in the positive and negative directions between the two fixed die parts. Two blanking ports which are symmetrically arranged left and right and penetrate through the lower die base up and down are formed on the lower die base.

[0009] As a preferred technical solution of the present invention, the fixed die part has an inverted L-shaped structure. When the clamping block abuts against the vertical section of the fixed die part and the moving module moves towards the direction close to the clamping block, the space combination among the clamping block, the fixed die part and the moving module forms a cavity for flanging and stamping the lug.

[0010] As a preferred technical solution of the present invention, the connecting component includes two sliding plates symmetrically arranged left and right and fixedly installed on the lower side of the upper die base. The sliding plates are slidably connected with the lower die base up and down. A guiding groove which gradually inclines upwards from front to back is formed on the sliding plate. Both the left and right sides of the moving module slide inside the corresponding guiding groove through linkage struts.

[0011] As a preferred technical solution of the present invention, the positioning component includes two pushing plates arranged left and right and slidably arranged inside the clamping block in the front and back directions. The center distance between the two pushing plates is equal to the center distance between the two connecting holes on the lug. The horizontal sections of the two fixed die parts form a feeding port for the lug to fall. Two positioning plates symmetrically arranged left and right are fixedly installed on the front and back side surfaces of the moving module. The thickness of the positioning plate is equal to the thickness of the lug plate part. A chamfer is formed on the positioning plate.

[0012] As a preferred technical solution of the present invention, a plurality of hole supporting parts are slidably arranged at equal intervals along the circumferential direction of the center of the pushing plate on the side of the pushing plate close to the middle part of the lower die base. The side of the hole supporting part close to the middle part of the lower die base has a rod-shaped structure. The side of the hole supporting part far from the middle part of the lower die base has a plate-shaped structure. Two sliding grooves which are arranged front and back and gradually approach the direction close to the middle part of the lower die base from bottom to top are formed on the plate-shaped structure of the hole supporting part.

[0013] As a preferred technical solution of the present invention, a horizontally arranged fixed strut which slides inside the corresponding sliding groove is fixedly installed on the clamping block at the position corresponding to the sliding groove. A cylinder for synchronously driving the two pushing plates through a synchronous plate is fixedly installed on the side of the clamping block far from the middle part of the lower die base.

[0014] As a preferred technical solution of the present invention, a spring damping rod is jointly arranged between the clamping block and the vertical section of the corresponding fixed mold part. A buckle is slidably arranged up and down on the left side of the clamping block. A tension spring is arranged between the buckle and the clamping block. A clamping groove for the buckle to extend into is arranged on the left side of the fixed mold part.

[0015] As a preferred technical solution of the present invention, a driven strut is fixedly installed on the left side of the buckle. Two symmetrically arranged active push plates are fixedly installed on the moving die block. The position of the active push plate far away from the moving die block is of an inclined surface structure for pushing the driven strut upward.

[0016] As a preferred technical solution of the present invention, the limiting component includes a feeding port opened in the middle of the rotating part. Two wheel frames are slidably arranged on both long sides of the feeding port. A abutting wheel is rotatably arranged on the side of the wheel frame close to the middle of the rotating part. Two symmetrically arranged limiting rollers are rotatably arranged on the short side of the feeding port.

[0017] As a preferred technical solution of the present invention, the transmission component includes a fixed plate part fixedly installed on the rear side of the rear fixed mold part. Helical springs for pushing the rotating part to rotate are arranged between the left and right sides of the fixed plate part and the rotating part. A linkage support plate is fixedly installed on the rear side of the upper mold base. The linkage support plate drives the rotating part to rotate back and forth and reversely by 90 degrees through the transmission of a gear and a rack.

[0018] The beneficial effects of the present invention are as follows: First, the present invention uses the method of alternately stamping on the front and rear sides of the moving die block to form flanging on the lug. The moving die block realizes reciprocating movement back and forth through the driving mechanism. The two working surfaces of the moving die block are used to alternately stamp the lug. Two workpieces can be flanged and formed in a single reciprocating stroke, greatly improving the production efficiency to meet the large-scale demand for automotive parts.

[0019] Second, the present invention forms two processing cavities between the front and rear two sides of the moving die block and the two fixed mold parts. When the moving die block stamps the lug inside one of the cavities, the operator can put the lug to be processed into the other processing cavity, so as to make full use of the stamping processing time for feeding, reducing the processing efficiency.

[0020] Third, the present invention uses the limiting rollers and abutting wheels of the feeding mechanism to accurately control the falling position of the lug. The positioning component automatically aligns the position of the lug through the positioning plate and the hole supporting part, without manual contact with the mold cavity, avoiding the risk of pinching. And the hole supporting part driven by the cylinder can always accurately match the connecting hole of the lug in a self-compensating manner, avoiding the problem of increasing the rejection rate due to wear. Description of the Drawings

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure when the invention punches the lug.

[0023] Figure 2 It is a sectional view when the invention punches the lug.

[0024] Figure 3 It is a sectional view of the lower die base, fixed die part, movable die block and rotating part in the invention.

[0025] Figure 4 It is a sectional view of the lower die base, fixed die part, movable die block and material clamping block in the invention.

[0026] Figure 5 It is a left view of the fixed die part, movable die block, material clamping block and buckle in the invention.

[0027] Figure 6 It is a sectional view of the material clamping block, push plate, hole supporting part and air cylinder in the invention.

[0028] Figure 7 It is a schematic diagram of the structure of the push plate, hole supporting part and sliding groove in the invention.

[0029] Figure 8 It is a sectional view of the lower die base, fixed die part, movable die block and positioning plate in the invention.

[0030] In the figure: 1. Lower die base; 2. Fixed die part; 3. Movable die block; 4. Material feeding mechanism; 5. Driving mechanism; 41. Rotating part; 42. Limiting component; 43. Transmission component; 51. Connecting component; 52. Upper die base; 53. Material clamping block; 54. Positioning component; 55. Spring damping rod; 421. Feeding port; 422. Wheel frame; 423. Abutting wheel; 424. Limiting roller; 425. Linking part; 426. Synchronous moving plate; 427. Linking rod part; 431. Fixed plate part; 432. Linking support plate; 511. Sliding plate; 512. Guide groove; 513. Linking support pillar; 541. Push plate; 542. Positioning plate; 543. Hole supporting part; 544. Sliding groove; 545. Fixed support pillar; 546. Synchronous plate; 547. Air cylinder; 551. Buckle; 552. Driven support pillar; 553. Active push plate. Specific embodiments

[0031] The embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention. For those not specified in the embodiments, the techniques or conditions described in the literature in the art or according to the product specifications are followed.

[0032] Refer to Figure 1 and Figure 2, A flanging stamping die, including a lower die base 1, on the upper side of the lower die base 1, two fixed die parts 2 arranged symmetrically front and back are fixedly installed. The fixed die part 2 has an inverted L-shaped structure. On the upper side of the lower die base 1 and between the two fixed die parts 2, a moving die block 3 is slidably arranged front and back. The die also includes a feeding mechanism 4 for quickly loading and unloading the lug and a driving mechanism 5 that alternately punches and flanges the lug on both sides of the moving die block 3 by moving the moving die block 3 back and forth.

[0033] When it is necessary to punch and flange the lug, the operator first moves the lower die base 1 into the interior of the press, so that the lower die base 1 is fixedly installed on the upper part of the operating table of the press. Subsequently, the driving mechanism 5 is fixedly connected to the hydraulic telescopic section of the press. Then, the operator places the lug inside the feeding mechanism 4 by means of a manual or automatic feeding device. Subsequently, the hydraulic telescopic section of the press is extended, and the driving mechanism 5 rotates the lug forward by ninety degrees.

[0034] The driving mechanism 5 simultaneously drives the moving die block 3 to move backward. Then, the lug falls between the two fixed die parts 2 under the action of gravity, and the lug is located in front of the moving die block 3. After that, the feeding mechanism 4 can automatically reset. Then, the operator places a new lug inside the feeding mechanism 4 again. Then, the hydraulic telescopic section of the press is contracted, so that the driving mechanism 5 rotates the new lug backward by ninety degrees, and at the same time, the driving mechanism 5 drives the moving die block 3 to move forward, thereby punching and flanging the lug between the two fixed die parts 2.

[0035] Then, the lug rotated backward by ninety degrees falls between the two fixed die parts 2 under the action of gravity and is located behind the moving die block 3. The feeding mechanism 4 automatically resets. The operator places the lug inside the feeding mechanism 4 again. When the hydraulic telescopic section of the press is extended and the moving die block 3 moves backward for stamping, the lug that has been stamped in the front part of the moving die block 3 falls to the lower part of the lower die base 1 under the action of gravity, completing the blanking. Then, the above actions are continuously repeated to continuously punch and flange the lug.

[0036] Refer to Figure 1 、 Figure 2 and Figure 4 , The driving mechanism 5 includes an upper die base 52 slidably arranged above the lower die base 1 through a connecting component 51. The upper die base 52 drives the moving die block 3 to reciprocate back and forth through the transmission of the connecting component 51 by the up and down movement of the press. On the upper side of the lower die base 1, two clamping blocks 53 arranged front and back are slidably arranged. The clamping blocks 53 are provided with a positioning component 54 for accurately positioning the lug. The two clamping blocks 53 are respectively located between the front and back sides of the moving die block 3 and the fixed die parts 2. Between the horizontal sections of the two fixed die parts 2, a feeding port for the lug to fall is formed.

[0037] Refer to Figure 1 、Figure 2 , Figure 3 and Figure 8 , the material feeding mechanism 4 includes a rotating member 41 rotatably arranged on the upper sides of two fixed mold members 2. A limiting component 42 for aligning the lifting lugs is arranged on the rotating member 41. The upper mold base 52 drives the rotating member 41 to rotate left and right repeatedly through a transmission component 43, so that the lifting lugs fall one by one in a positive and negative manner between the two fixed mold members 2. Two blanking ports are formed on the lower mold base 1, which are symmetrically arranged left and right and penetrate through the lower mold base 1 up and down.

[0038] Refer to Figure 2 and Figure 3 , the limiting component 42 includes a feeding port 421 formed in the middle of the rotating member 41. Two wheel frames 422 are slidably arranged on both long sides of the feeding port 421. A abutting wheel 423 is rotatably arranged on one side of the wheel frame 422 close to the middle of the rotating member 41. Two limiting rollers 424 are rotatably arranged on the short side of the feeding port 421 and are symmetrically arranged up and down.

[0039] Continue to refer to Figure 2 and Figure 3 , a linkage member 425 is slidably arranged on the rotating member 41 along the length direction of the feeding port 421. Synchronous moving plates 426 are commonly installed on the left two wheel frames 422 and the right two wheel frames 422. The linkage member 425 is hinged to the two synchronous moving plates 426 through two link members 427. The side of the linkage member 425 away from the axis of the rotating member 41 is of an arc structure. A pushing spring is arranged between the wheel frame 422 and the rotating member 41.

[0040] Continue to refer to Figure 2 and Figure 3 , the transmission component 43 includes a fixing plate member 431 fixedly installed on the rear side of the rear fixed mold member 2. Spiral springs for pushing the rotating member 41 to rotate are arranged between the left and right sides of the fixing plate member 431 and the rotating member 41. A linkage support plate 432 is fixedly installed on the rear side of the upper mold base 52. The linkage support plate 432 drives the rotating member 41 to rotate reciprocally in a positive and negative direction by 90 degrees through the transmission of a gear and a rack.

[0041] It should be noted that, as Figure 2 shown, the transmission method of the gear and the rack in this embodiment includes an incomplete gear fixedly installed on the outer side of the rotating member 41. A linkage shaft rod is rotatably arranged at the rear part of the fixing plate member 431. A transmission gear meshing with the incomplete gear is fixedly installed on the outer side of the upper part of the linkage shaft rod. A first bevel gear is fixedly installed on the outer side of the lower part of the linkage shaft rod. A second bevel gear meshing with the first bevel gear is rotatably arranged at the rear side of the lower mold base 1. A spur gear arranged coaxially is fixedly installed at the rear side of the second bevel gear. A rack for driving the spur gear to rotate is fixedly installed on the lower right side of the linkage support plate 432.

[0042] In the initial state, two helical springs push the rotating member 41 through their own elastic forces, causing the rotating member 41 to drive the feeding ports 421 thereon to be arranged front and back. At this time, the linkage member 425 contacts the fixed plate member 431, causing the fixed plate member 431 to push the linkage member 425 forward. The linkage member 425 drives the wheel carrier 422 to move away from the middle of the rotating member 41 through the connecting rod member 427 and the synchronous moving plate 426, while compressing the pushing spring.

[0043] When flanging the lug needs to be carried out, the operator places the lug inside the feeding port 421 manually or through an automatic feeding device. At the same time, the side of the lug that needs to be flanged is arranged backward, and the rear side of the lug abuts against the outer sides of the two limiting rollers 424.

[0044] When the lug is placed inside the feeding port 421, the hydraulic telescopic section extending out of the press drives the upper die holder 52 to move downward. The upper die holder 52 drives the rack to move downward through the linkage support plate 432. Subsequently, the rack meshes with the spur gear and drives it to rotate. The spur gear drives the rotating member 41 to rotate forward through the second bevel gear, the first bevel gear, the linkage shaft rod, the transmission gear, and the incomplete gear. The rotating member 41 drives the lug to rotate through the wheel carrier 422 and the abutting wheel 423.

[0045] When the rotating member 41 drives the linkage member 425 to rotate to a position where it does not contact the fixed plate member 431, the pushing spring pushes the wheel carrier 422 through its own elastic force, causing the wheel carrier 422 to drive the abutting wheel 423 thereon to abut against the side of the lug. The wheel carriers 422 on both sides of the lug are hinged to the linkage member 425 through the connecting rod member 427, causing the wheel carriers 422 on both sides of the lug to move synchronously towards each other, so that the wheel carrier 422 pushes and limits the lug to the middle position of the feeding port 421 through the abutting wheel 423.

[0046] When the rotating member 41 drives the lug to rotate forward by ninety degrees through the abutting wheel 423, the lug is arranged left and right, and the part of the lug that needs to be flanged faces to the right. At this time, the lug is located above the feeding port, and then the lug falls between the horizontal sections of the two fixed die members 2 under the action of gravity.

[0047] Refer to Figure 1 and Figure 2 As shown in

[0048] While the upper die base 52 moves downward, it drives the two sliding plates 511 to move downward synchronously. The sliding plates 511 push the linkage struts 513 backward through the guiding grooves 512 thereon, and the linkage struts 513 drive the moving die block 3 to move backward synchronously.

[0049] Refer to Figure 2 、 Figure 5 and Figure 8 , the positioning assembly 54 includes two push plates 541 arranged left and right and sliding back and forth inside the clamping block 53. The center distance between the two push plates 541 is equal to the center distance between the two connection holes on the lifting lug. Two positioning plates 542 arranged symmetrically left and right are fixedly installed on the front and rear sides of the moving die block 3. The thickness of the positioning plate 542 is equal to the thickness of the lifting lug plate member, and a chamfer is provided on the positioning plate 542.

[0050] When the clamping block 53 abuts against the vertical section of the fixed die member 2 and the moving die block 3 moves towards the direction close to the clamping block 53, the space combination among the clamping block 53, the fixed die member 2 and the moving die block 3 forms a cavity for flanging and stamping the lifting lug.

[0051] While the moving die block 3 moves backward, the moving die block 3 pushes the rear clamping block 53 backward through the positioning plate 542 on its rear side. When the lifting lug rotates to be arranged left and right, there is still a certain gap between the rear side surface of the rear clamping block 53 and the rear fixed die member 2, so that the lifting lug falls onto the moving die block 3 through the feeding port. The edge of the feeding port is chamfered, so that the feeding port can guide and limit the lifting lug, prevent the lifting lug from shifting left and right, and at this time the lifting lug is completely located between the two fixed die members 2.

[0052] Subsequently, the hydraulic telescopic section of the press continues to extend downward, so that the moving die block 3 pushes the rear side surface of the rear clamping block 53 to abut against the vertical section of the rear fixed die member 2. At the same time, the moving die block 3 moves backward to the rear of the lifting lug, so that the lifting lug falls onto the front part of the moving die block 3 under the action of gravity, and the lifting lug is located between the two positioning plates 542 on the front side of the moving die block 3. The chamfer of the positioning plate 542 guides the falling of the lifting lug, thereby roughly positioning the position of the lifting lug, and further making the connection holes on the lifting lug located in the front part of the moving die block 3 respectively correspond to the central positions of the two front push plates 541.

[0053] Meanwhile, the linkage support plate 432 drives the rack to move downward to a position where the lower part of the rack is not engaged with the rack. Subsequently, the spiral spring pushes the rotating member 41 to rotate to the initial position through its own elastic force. Then, the operator places a new lifting lug inside the feeding port 421 again by means of manual or automatic feeding equipment, and at the same time makes the side of the lifting lug that needs to be stamped and flanged face backward.

[0054] Refer to Figure 4 and Figure 5, a spring damper rod 55 is jointly arranged between the clamping block 53 and the vertical section of the corresponding fixed mold part 2. A buckle 551 is slidably arranged up and down on the left side of the clamping block 53. A tension spring is arranged between the buckle 551 and the clamping block 53. A clamping groove for the buckle 551 to extend into is arranged on the left side of the fixed mold part 2.

[0055] Continue to refer to Figure 4 and Figure 5 , a driven support column 552 is fixedly installed on the left side of the buckle 551. Two symmetrically arranged active push plates 553 are fixedly installed on the moving die block 3. The position of the active push plate 553 away from the moving die block 3 is in an inclined surface structure for jacking up the driven support column 552 upward.

[0056] In the initial state, the front buckle 551 is clamped inside the clamping groove of the front fixed mold part 2, so that the front fixed mold part 2 and the front clamping block 53 are locked into a whole, and at the same time, the front spring damper rod 55 is compressed. When the moving die block 3 pushes the rear side of the rear clamping block 53 to abut against the vertical section of the rear fixed mold part 2, the rear clamping block 53 is locked into a whole with the rear fixed mold part 2 through the rear buckle 551.

[0057] At the same time, the moving die block 3 jacks up the front driven support column 552 through the inclined surface structure on the front active push plate 553, so that the front driven support column 552 drives the front buckle 551 to withdraw from the clamping groove inside the front fixed mold part 2, so that the front fixed mold part 2 and the front clamping block 53 are in contact and locked. Subsequently, the front spring damper rod 55 pushes the front clamping block 53 to move backward, so that the rear side of the front clamping block 53 abuts against the front side of the positioning plate 542 on the front side of the moving die block 3.

[0058] It should be noted that when the lug falls to the front part of the moving die block 3, the part of the lug that needs to be flanged still corresponds to the horizontal section position of the fixed mold part 2. By the blocking of the horizontal section of the fixed mold part 2 on the lug, the lug is prevented from tipping over when it is between the two fixed mold parts 2.

[0059] When the rear side of the front clamping block 53 abuts against the front side of the positioning plate 542 on the front side of the moving die block 3, the rear side of the front clamping block 53 also abuts against the front side of the lug.

[0060] Refer to Figure 2 , Figure 5 , Figure 6 and Figure 7, a number of support hole members 543 are slidably arranged at equal intervals along the circumferential direction of the center of the pushing plate 541 on one side of the pushing plate 541 close to the middle of the lower die base 1. One side of the support hole member 543 close to the middle of the lower die base 1 is in a rod-shaped structure, and one side of the support hole member 543 away from the middle of the lower die base 1 is in a plate-shaped structure. Two sliding grooves 544 are arranged front and back on the plate-shaped structure of the support hole member 543 and gradually approach the middle of the lower die base 1 from bottom to top.

[0061] Refer to Figure 6 and Figure 7 , a horizontally arranged fixed support column 545 that slides inside the corresponding sliding groove 544 is fixedly installed at the position of the clamping block 53 corresponding to the sliding groove 544. A cylinder 547 that synchronously drives the two pushing plates 541 through a synchronous plate 546 is fixedly installed on one side of the clamping block 53 away from the middle of the lower die base 1.

[0062] When the rear side of the front clamping block 53 abuts against the front side of the lifting lug, the pushing plate 541 on the front clamping block 53 corresponds to the position of the connection hole on the lifting lug, and then the telescopic section of the front cylinder 547 is extended. The cylinder 547 pushes the two sliding plates 511 to move backward synchronously, and the sliding plates 511 drive the support hole members 543 thereon to move synchronously, so that the support hole members 543 connected to the same sliding plate 511 are inserted into the corresponding connection holes of the lifting lug.

[0063] When the front support hole member 543 moves backward, the support hole member 543 drives the sliding groove 544 thereon to move synchronously, so that the fixed support column 545 drives the support hole member 543 to expand outward synchronously while moving backward by pushing the sliding groove 544, so that the support hole members 543 connected to the same sliding plate 511 are synchronously abutted against the inner wall of the corresponding connection hole of the lifting lug, and then the position of the lifting lug is accurately positioned through the self-compensation positioning of the connection hole of the lifting lug.

[0064] Subsequently, the hydraulic telescopic section of the press is contracted to drive the upper die base 52 to move upward. The principle is the same as above, so that the moving module 3 drives the lifting lug to move forward. The moving module 3 pushes the front clamping block 53 forward synchronously and synchronously compresses the front spring damping rod 55. Through the resistance when the spring damping rod 55 contracts, the moving module 3 pushes the lifting lug tightly against the front clamping block 53. Subsequently, the moving module 3 drives the lifting lug to move until it abuts against the front fixed die member 2, so that the moving module 3 forms a cavity with the front clamping block 53 and the fixed die member 2 to perform stamping and flanging on the lifting lug.

[0065] Meanwhile, the clamping block 53 at the front is locked with the fixed mold part 2 at the front to form an integral whole. Also, the lugs to be processed are rotated counterclockwise by ninety degrees and arranged horizontally, and the parts of the lugs that need to be flanged face left, and then they fall to the rear of the moving module 3. At the same time, the operator places the lugs to be processed inside the feeding port 421 again. At this time, the flanged lugs are directly above the blanking port at the front. Subsequently, the hydraulic telescopic section of the press extends again. For the same principle as above, the moving module 3 moves backward, and the formed lugs are supported and clamped by the inner support of the hole-supporting part 543 and do not move with the moving module 3.

[0066] Subsequently, the telescopic section of the cylinder 547 at the front is retracted, causing the front hole-supporting part 543 to move inside the front clamping block 53, so that the processed lugs are blanked through the front blanking port under the action of gravity. At the same time, the moving module 3 processes the lugs at the rear, and thus continuous and efficient stamping and flanging processing of the lugs is carried out.

[0067] When the present invention performs stamping and flanging processing on the lugs, the following steps are further included: First step, the operator places the lugs inside the feeding port 421 manually or by means of an automatic feeding device. At the same time, the side of the lugs that needs to be stamped and flanged faces backward, and the rear side of the lugs abuts against the outer sides of the two limiting rollers 424.

[0068] Second step, the hydraulic telescopic section of the press is extended to drive the upper die base 52 to move downward, so that the lugs are arranged vertically and fall between the horizontal sections of the two fixed mold parts 2. At the same time, the upper die base 52 drives the moving module 3 and the rear clamping block 53 to move backward synchronously, so that the lugs fall to the front of the moving module 3.

[0069] Third step, repeat the first step. The moving module 3 pushes the rear side of the rear clamping block 53 to abut against the vertical section of the rear fixed mold part 2, and the active push plate 553 pushes the front driven support column 552 upward, so that the spring damper rod 55 pushes the front clamping block 53 to abut against the front side of the lugs.

[0070] Fourth step, the telescopic section of the cylinder 547 at the front is extended, so that the hole-supporting parts 543 connected to the same pushing plate 541 abut against the inner walls of the corresponding connecting holes of the lugs synchronously, and then the position of the lugs is accurately positioned by self-compensating positioning of the connecting holes of the lugs.

[0071] Fifth step, the hydraulic telescopic section of the press is retracted to drive the upper die base 52 to move upward, so that the moving module 3 drives the lugs to move forward, and thus the moving module 3 performs stamping and flanging on the lugs through the cavity formed between the front clamping block 53 and the fixed mold part 2.

[0072] In the sixth step, the rotating member 41 reversely rotates the ear to be processed by 90 degrees to be arranged horizontally, and the part of the ear that needs to be flanged faces left, and then it drops to the rear of the moving module 3. The telescopic section of the cylinder 547 at the front is contracted, so that the processed ear is discharged through the front blanking port under the action of gravity.

[0073] In the seventh step, repeat the first step to the sixth step to continuously and efficiently perform stamping and flanging processing on the ear.

[0074] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. A flanging stamping die, comprising a lower die seat, characterized in that: Two fixed mold parts arranged symmetrically front and back are fixedly installed on the upper side of the lower mold base, and a movable mold part is slidably arranged front and back on the upper side of the lower mold base and located between the two fixed mold parts. The mold also includes a feeding mechanism for quickly loading and unloading the lifting lugs and a driving mechanism for alternately punching and flanging the lifting lugs with the working surfaces on both sides of the movable mold part by reciprocating the movable mold part back and forth; The driving mechanism includes an upper die seat that is slidably arranged on the upper side of the lower die seat through a connecting component. The upper die seat drives the moving module to reciprocate forward and backward through the up and down movement of the press and the transmission of the connecting component. Two clamping blocks arranged front and back are slidably arranged on the upper side of the lower die seat. A positioning component for accurately positioning the lifting lug is provided on the clamping block. The two clamping blocks are respectively located between the front and rear sides of the moving module and the fixed die member; The feeding mechanism includes a rotating part which is arranged on the upper side of the two fixed mold parts for common rotation. A limit assembly for aligning the lifting ears is arranged on the rotating part. The upper mold base drives the rotating part to rotate left and right repeatedly through the transmission assembly, so that the lifting ears fall down one by one between the two fixed mold parts. The lower mold base is provided with two dropping openings which are arranged symmetrically on the left and right and pass through the lower mold base from top to bottom.

2. A flanging stamping die according to claim 1, characterized in that: The fixed die is in an inverted L-shaped structure. When the clamping block abuts against the vertical section of the fixed die and the movable die block moves toward the clamping block, the space between the clamping block, the fixed die and the movable die block is combined into a cavity for flanging and stamping the lifting ear.

3. A flanging stamping die according to claim 1, characterized in that: The connecting assembly includes two sliding plates fixedly mounted on the lower side of the upper die base and arranged symmetrically. The sliding plates are connected to the lower die base for vertical sliding. A guide groove is provided on the sliding plate and gradually tilts upward from front to rear. Both the left and right sides of the moving module slide in the corresponding guide grooves through linkage pillars.

4. A flanging stamping die according to claim 1, characterized in that: The positioning assembly includes two left-right arranged push plates that slide back and forth inside the clamping block, the center distance between the two push plates is equal to the center distance between the two connecting holes on the lifting ear, and the horizontal sections of the two fixed mold parts form a feed inlet for the lifting ear to fall. Two left-right symmetrically arranged positioning plates are fixedly installed on the front and rear sides of the moving module, the thickness of the positioning plates is equal to the thickness of the lifting ear plates, and chamfers are provided on the positioning plates.

5. A flanging stamping die according to claim 4, characterized in that: A plurality of hole-supporting members are provided on one side of the push plate close to the middle of the lower die base for sliding at equal intervals along the central circumference of the push plate. The hole-supporting member is in a rod-shaped structure on the side close to the middle of the lower die base, and is in a plate-shaped structure on the side away from the middle of the lower die base. The plate-shaped structure of the hole-supporting member has two sliding grooves arranged front and back and gradually approaching the middle of the lower die base from bottom to top.

6. A flanging stamping die according to claim 5, characterized in that: A horizontally arranged fixed support that slides inside the corresponding sliding groove is fixedly installed at the position of the clamping block corresponding to the sliding groove, and a cylinder that synchronously drives two push plates through a synchronous plate is fixedly installed on one side of the clamping block away from the middle of the lower die base.

7. The flanging stamping die according to claim 5, characterized in that: A spring damping rod is commonly provided between the clamping block and the vertical section of the corresponding fixed mold, a buckle is provided on the left side of the clamping block for sliding up and down, a tension spring is provided between the buckle and the clamping block, and a slot for the buckle to extend into is provided on the left side of the fixed mold.

8. A flanging stamping die according to claim 7, characterized in that: A driven pillar is fixedly installed on the left side of the buckle, and two active push plates arranged symmetrically front and back are fixedly installed on the moving module. The position of the active push plate away from the moving module forms an inclined structure for pushing the driven pillar upward.

9. The flanging stamping die according to claim 1, characterized in that: The limiting assembly includes a feeding port opened in the middle of the rotating part, two wheel frames are slidably arranged on the two long sides of the feeding port, a supporting wheel is rotatably arranged on one side of the wheel frame close to the middle of the rotating part, and two limiting rollers symmetrically arranged up and down are rotatably arranged on the short side of the feeding port.

10. The flanging stamping die according to claim 1, characterized in that: The transmission assembly includes a fixed plate fixedly installed on the rear side of the rear fixed mold, and coil springs for driving the rotating part to rotate are arranged between the left and right sides of the fixed plate and the rotating part. A linkage support plate is fixedly installed on the rear side of the upper mold base, and the linkage support plate drives the rotating part to reciprocate and rotate forward and backward by 90 degrees through the transmission method of gears and racks.

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