Continuous stamping device for metal stamping

Abstract

The invention discloses a continuous punching device for metal punching, and particularly relates to the technical field of punching, the continuous punching device comprises a punching machine shell, a plurality of punching structures are linearly distributed and fixedly mounted on the inner surface of the punching machine shell, and each punching structure comprises a U-shaped supporting frame fixedly connected with the inner surface of the punching machine shell; the output end of the first electric telescopic rod and the inner surface of the U-shaped supporting frame are jointly provided with an upper mold, a lower mold is arranged on the bottom wall of the inner surface of the U-shaped supporting frame, and a feeding assembly is arranged on the rear portion of the inner surface of the U-shaped supporting frame. According to the continuous stamping device for metal stamping, two-end stamping is achieved through cooperation of the upper die and the lower die, the multi-time stamping process of complex shapes is simplified, the forming efficiency is improved, automatic discharging and feeding are further achieved through the effect of the feeding assembly, and the production efficiency is improved. And automatic collection of finished products is achieved through cooperation of the material conveying belt and the discharging port, the production process is optimized, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping, and particularly relates to a continuous stamping device for metal stamping. Background Art

[0002] In the field of metal processing, stamping devices are key equipment for realizing the forming of metal sheets. Traditional metal stamping devices mainly rely on presses and dies, and make the sheet undergo plastic deformation by applying pressure, so as to obtain parts with the required shape and size. Its working principle is based on the transmission of mechanical pressure, and it is widely used in industries such as automobile manufacturing, electronic equipment, and aerospace, and is an important process means for metal forming.

[0003] Chinese Patent Publication No. CN219004226U discloses a stamping device for producing metal fittings, including a bottom box, an installation frame is installed at the upper end of the bottom box, a hydraulic pump is installed at the lower end of the installation frame, a stamping head is installed at the output end of the hydraulic pump, four side columns are installed at the output end of the hydraulic pump, four limiting cylinders are installed at the upper end of the bottom box, springs are arranged in all four limiting cylinders, a stamping hole is opened in the bottom box, a die is installed on the inner wall of the stamping hole, the bottom box is provided with an inner cavity, and an atomizer is installed on the inner wall of the bottom box.

[0004] However, the existing metal stamping devices have obvious deficiencies. Most devices are difficult to achieve simultaneous stamping at both ends, and parts with complex shapes need to be formed by multiple stampings, with a cumbersome process and low efficiency;

[0005] Moreover, the loading and unloading processes mostly rely on manual operations, with low automation, and it is easy to have efficiency bottlenecks and safety hazards;

[0006] At the same time, single stamping is difficult to meet the forming requirements of complex shapes, which limits the improvement of production efficiency, and it is urgent to be improved to meet the high-efficiency production requirements of modern manufacturing. Summary of the Invention

[0007] The main purpose of the present invention is to provide a continuous stamping device for metal stamping, which can effectively solve the problems of cumbersome metal stamping process and low forming efficiency.

[0008] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0009] A continuous stamping device for metal stamping, comprising a punch housing, four support legs are fixedly connected to the lower end of the punch housing in a rectangular distribution, a control console is fixedly installed at the left end of the punch housing, a discharge port is opened at the front end of the punch housing, a material conveying belt is fixedly installed on the inner surface of the punch housing, and a plurality of stamping structures are linearly distributed and fixedly installed on the inner surface of the punch housing. The stamping structure includes a U-shaped support frame fixedly connected to the inner surface of the punch housing. An electric telescopic rod one is fixedly installed at the upper end of the U-shaped support frame. The output end of the electric telescopic rod one and the inner surface of the U-shaped support frame are jointly provided with an upper die. A lower die is arranged on the bottom wall of the inner surface of the U-shaped support frame. A feeding assembly is arranged at the rear part of the inner surface of the U-shaped support frame.

[0010] Preferably, a blanking slope is opened at the front part of the inner surface of the U-shaped support frame. T-shaped grooves slidably connected to the upper die are symmetrically opened on the left and right in the middle of the inner surface of the U-shaped support frame. Contact sensors are fixedly installed at the top of the inner surfaces of the two T-shaped grooves. Electric telescopic rods two are fixedly installed at the lower parts of the inner surfaces of the two T-shaped grooves. The output ends of the two electric telescopic rods two are fixedly connected with wedge blocks slidably connected to the inner surfaces of the T-shaped grooves.

[0011] Preferably, the upper die includes a connecting seat fixedly connected to the output end of the electric telescopic rod one. A two-stage relay spring is fixedly connected to the lower end of the connecting seat. A forming seat slidably connected to the inner surfaces of the two T-shaped grooves is fixedly connected to the lower end of the two-stage relay spring. An upper die mounting seat is slidably connected to the inner surface of the forming seat.

[0012] Preferably, a limiting rod is fixedly connected to the upper end of the upper die mounting seat. The upper end of the limiting rod penetrates through the forming seat and the connecting seat and extends into the inner cavity of the connecting seat and is slidably connected to the connecting seat and the connecting seat. A buffer spring one fixedly connected to the bottom wall of the inner cavity of the connecting seat is fixedly installed on the upper part of the outer surface of the limiting rod. A compression spring one fixedly connected to the top wall of the inner cavity of the forming seat is fixedly connected to the upper end of the upper die mounting seat.

[0013] Preferably, a plurality of two-stage pressing rods are fixedly connected to the lower end of the connecting seat in a circular distribution. The lower ends of the plurality of two-stage pressing rods all penetrate through the upper end of the forming seat and extend to the lower end of the forming seat and are slidably connected to the inner cavity of the forming seat.

[0014] Preferably, the lower die includes an L-shaped groove formed in the bottom wall of the inner surface of the U-shaped support frame. An oil chamber I is formed in the lower part of the inner surface of the L-shaped groove. A ring block is slidably connected to the vertical part of the inner surface of the L-shaped groove. A plurality of connecting rods are fixedly connected to the lower end of the ring block in a circular distribution. The lower ends of the plurality of connecting rods all penetrate through the L-shaped groove and extend into the oil chamber I and are fixedly connected with piston rings that are slidably connected to the inner surface of the oil chamber I. A plurality of buffer springs II sleeved on the outer sides of adjacent connecting rods are fixedly connected to the lower end of the ring block in a circular distribution. A plurality of sliding grooves are formed in the horizontal part of the L-shaped groove. A plurality of convex blocks corresponding to the positions of the sliding grooves are fixedly connected to the inner surface of the ring block in a circular distribution.

[0015] Preferably, an oil chamber II communicating with the oil chamber I is formed in the inner surface of the U-shaped support frame. A piston rod is slidably connected to the inner surface of the oil chamber II. The upper end of the piston rod penetrates through the inner surface of the oil chamber II and extends to the upper end of the U-shaped support frame and is fixedly connected with a lower die mounting seat through a telescopic rod. A return spring is fixedly connected between the lower end of the lower die mounting seat and the upper end of the U-shaped support frame.

[0016] Preferably, the feeding assembly includes a U-shaped frame slidably connected to the inner surface of the U-shaped support frame and a blanking hopper fixedly connected to the rear part of the inner surface of the U-shaped support frame. Push rods are fixedly connected symmetrically left and right at the front part of the inner surface of the U-shaped frame. A central disk is fixedly connected to the rear part of the inner surface of the U-shaped frame. Feeding assemblies symmetrically distributed left and right are jointly arranged on the inner surface of the central disk and the inner surface of the U-shaped frame. Limiting strips are fixedly connected symmetrically left and right at the rear end of the central disk. An electric telescopic rod III is fixedly installed at the rear end of the blanking hopper. The output end of the electric telescopic rod III is fixedly connected to the rear part of the inner surface of the U-shaped frame.

[0017] Preferably, the feeding assembly includes oil chambers III symmetrically formed in the front and rear of the inner surface of the central disk. Lock tongues are slidably connected to the inner surfaces of the two oil chambers III. An oil chamber IV is formed in the part of the upper end of the U-shaped frame between the two oil chambers III. A communicating pipe is jointly arranged between the oil chamber IV and the oil chamber III. A compression spring II is fixedly connected to the bottom wall of the inner surface of the oil chamber IV. The upper end of the compression spring II is fixedly connected with a spherical rod that is slidably connected to the inner surface of the oil chamber IV.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention uses the driving effect of the electric telescopic rod I on the upper die to promote the upper die and the lower die to approach each other, and thereby stamp the plate into a predetermined shape. Further, both ends are stamped through the cooperation of the upper die and the lower die, simplifying the multiple stamping processes of complex shapes, improving the forming efficiency. Further, the feeding assembly is used to realize automatic blanking and feeding, and the automatic collection of finished products is realized in cooperation with the material conveying belt and the discharge port, optimizing the production process and improving the production efficiency.

[0020] 2. The present invention drives the connecting seat to move downward through the driving action of a pair of connecting seats of an electric telescopic rod, and drives the forming seat and the upper mold mounting seat to move downward synchronously through the action of a two-stage relay spring until the upper mold mounting seat contacts the raw material. The continuous pressure of the connecting seat on the forming seat causes the forming seat to continue to move downward over the lower part of the upper mold mounting seat and enter the L-shaped groove, and the cooperation between the forming seat and the L-shaped groove promotes the forming of the sheet.

[0021] 3. The present invention further presses the annular block downward after the forming seat is in place through the action of the two-stage downward pressure rod set at the lower part of the connecting seat, and the piston ring on the lower side of the annular block causes the piston rod to rise in the second oil chamber, and then the action of the piston rod on the lower die mounting seat drives the lower die mounting seat to be lifted up, and cooperates with the upper die mounting seat to form a secondary stamping, thereby realizing the molding of complex shapes, reducing the multiple stamping processes of complex shapes, simplifying the preparation process, and thus improving production efficiency.

[0022] 4. The present invention utilizes the cooperation of the U-shaped frame arranged on the rear side of the U-shaped support frame and the electric telescopic rod three to realize automatic loading and unloading of raw materials and finished products. Specifically, the electric telescopic rod three is used to drive the U-shaped frame to move forward, and the finished product is pushed into the unloading slope through the push rod, and finally falls into the material conveying belt through the inclined surface of the unloading slope for centralized transportation, thereby realizing automatic unloading; further, through the discharge assembly arranged in the center plate and the limit bar, the raw material plate in the unloading hopper is sent into the discharge assembly, and the plate is prompted to enter the predetermined position on the discharge assembly through the action of the electric telescopic rod two and the wedge block on the discharge assembly, thereby realizing automatic loading and unloading, and through automatic loading and unloading and multi-stage stamping, the preparation process is simplified, thereby improving efficiency and realizing continuous stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the punch housing of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the stamping structure of the present invention;

[0026] Figure 4 It is a schematic cross-sectional structure diagram of the upper mold of the present invention;

[0027] Figure 5 It is a bottom view structural schematic diagram of the upper mold of the present invention;

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the lower mold of the present invention;

[0029] Figure 7 A schematic diagram of the positional relationship between the protrusion and the slide groove of the present invention;

[0030] Figure 8 Schematic cross-sectional structure diagram of the U-shaped support frame of the present invention;

[0031] Figure 9 Schematic structure diagram of the feeding assembly of the present invention;

[0032] Figure 10 Schematic cross-sectional structure diagram of the feeding assembly of the present invention;

[0033] Figure 11 For the present invention Figure 10 Schematic enlarged view of the partial structure at A.

[0034] In the figure: 1. Punch housing; 2. Control console; 3. Support leg; 4. Discharge port; 5. Stamping structure; 51. Electric telescopic rod 1; 52. U-shaped support frame; 521. Feeding slope; 522. T-shaped groove; 523. Contact sensor; 524. Electric telescopic rod 2; 525. Wedge block; 53. Upper die; 531. Connecting seat; 532. Limit rod; 533. Buffer spring 1; 534. Forming seat; 5341. Second-stage pressing rod; 5342. Second-stage relay spring; 535. Compression spring 1; 536. Upper die mounting seat; 54. Lower die; 541. L-shaped groove; 5411. Sliding groove; 542. Annular block; 5421. Protrusion; 543. Buffer spring 2; 544. Connecting rod; 545. Piston ring; 546. Oil chamber 1; 547. Oil chamber 2; 548. Piston rod; 549. Lower die mounting seat; 5491. Return spring; 55. Feeding assembly; 551. U-shaped frame; 552. Electric telescopic rod 3; 553. Push rod; 554. Feeding component; 5541. Spherical rod; 5542. Compression spring 2; 5543. Lock tongue; 5544. Oil chamber 3; 5545. Connecting pipe; 5546. Oil chamber 4; 555. Feeding hopper; 556. Limit strip; 557. Central disc; 6. Material conveying belt. Specific embodiments

[0035] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0036] Example 1, as Figure 1 、 Figure 2 and Figure 3As shown in the figure, a continuous stamping device for metal stamping includes a punching machine housing 1. Four support legs 3 are fixedly connected to the lower end of the punching machine housing 1 in a rectangular distribution. A control console 2 is fixedly installed at the left end of the punching machine housing 1. A discharge port 4 is opened at the front end of the punching machine housing 1. A material conveying belt 6 is fixedly installed on the inner surface of the punching machine housing 1. A number of stamping structures 5 are linearly distributed and fixedly installed on the inner surface of the punching machine housing 1. The stamping structure 5 includes a U-shaped support frame 52 fixedly connected to the inner surface of the punching machine housing 1. An electric telescopic rod 51 is fixedly installed at the upper end of the U-shaped support frame 52. The output end of the electric telescopic rod 51 and the inner surface of the U-shaped support frame 52 are jointly provided with an upper die 53. The bottom wall of the inner surface of the U-shaped support frame 52 is provided with a lower die 54. A feeding component 55 is arranged at the rear part of the inner surface of the U-shaped support frame 52.

[0037] It should be specifically noted that the above control console 2 is a common control terminal in existing punching machines. Its internal configuration includes a PLC controller, a timer, and a contactor, and it can drive the contactor to act through the PLC and thus control the start, stop, forward and reverse operation of other electrical equipment. This structure has been widely used in the prior art. In the present invention, only its function of controlling the operation of electrical equipment is utilized, and its internal structure, operating principle, wiring, and control method will not be elaborated further.

[0038] Furthermore, the electric telescopic rod 51 is a conventional telescopic device used to drive the upper die 53 to move up and down in the U-shaped support frame 52. Its operating mode and installation method are both conventional technical means in the prior art, and will not be elaborated in detail in the present invention.

[0039] During the operation of this embodiment, the driving effect of the electric telescopic rod 51 on the upper die 53 is utilized to prompt the upper die 53 to approach the lower die 54, and thereby stamp the sheet into a predetermined shape. Further, the cooperation of the upper die 53 and the lower die 54 is used to achieve stamping at both ends, simplify the multiple stamping process of complex shapes, improve the forming efficiency, and further utilize the function of the feeding component 55 to achieve automatic blanking and loading, and cooperate with the material conveying belt 6 and the discharge port 4 to achieve automatic collection of finished products, optimize the production process, and improve the production efficiency.

[0040] Embodiment 2: On the basis of Embodiment 1, the driving action of the electric telescopic rod 51 drives the connecting seat 531 to move downward, and the connecting seat 531 drives the forming seat 534 and the upper die mounting seat 536 to move downward synchronously through the action of the two-stage relay spring 5342 until the upper die mounting seat 536 contacts the raw material. The continuous pressing of the forming seat 534 by the connecting seat 531 causes the forming seat 534 to move downward beyond the lower part of the upper die mounting seat 536 and enter the L-shaped groove 541. The cooperation between the forming seat 534 and the L-shaped groove 541 causes the sheet material to be formed. Further, after the forming seat 534 is in place, the two-stage pressing rod 5341 arranged at the lower part of the connecting seat 531 further presses the annular block 542 to move downward. The piston ring 545 on the lower side of the annular block 542 causes the piston rod 548 to rise in the oil chamber 547, and then the piston rod 548 drives the lower die mounting seat 549 to rise, cooperating with the upper die mounting seat 536 to form a secondary stamping, realizing the forming of complex shapes, reducing the multiple stamping processes of complex shapes, simplifying the preparation process, and thus improving the production efficiency.

[0041] Specifically, to achieve the stamping and forming of raw materials, refer to Figure 4 and Figure 5 , the upper die 53 includes a connecting seat 531 fixedly connected to the output end of the electric telescopic rod 51. The lower end of the connecting seat 531 is fixedly connected with a two-stage relay spring 5342. The lower end of the two-stage relay spring 5342 is fixedly connected with a forming seat 534 that slides on the inner surface of the two T-shaped grooves 522. The inner surface of the forming seat 534 is slidably connected with an upper die mounting seat 536.

[0042] Further, to provide a cavity with a predetermined shape during the stamping process to assist the forming of the material, refer to Figure 4 and Figure 5 , the upper end of the upper die mounting seat 536 is fixedly connected with a limiting rod 532. The upper end of the limiting rod 532 passes through the forming seat 534 and the connecting seat 531 and extends into the inner cavity of the connecting seat 531 and is slidably connected with the connecting seat 531. A first buffer spring 533 fixedly connected to the bottom wall of the inner cavity of the connecting seat 531 is fixedly installed on the upper part of the outer surface of the limiting rod 532. The upper end of the upper die mounting seat 536 is fixedly connected with a first compression spring 535 fixedly connected to the top wall of the inner cavity of the forming seat 534.

[0043] Further, to achieve two-stage stamping and the forming of complex shapes, refer to Figure 5 , several two-stage pressing rods 5341 are fixedly connected to the lower end of the connecting seat 531 in a circumferential distribution. The lower ends of the several two-stage pressing rods 5341 all pass through the upper end of the forming seat 534 and extend to the lower end of the forming seat 534 and are slidably connected with the inner cavity of the forming seat 534;

[0044] The lower die 54 includes an L-shaped groove 541 formed in the bottom wall of the inner surface of the U-shaped support frame 52. A first oil cavity 546 is formed in the lower part of the inner surface of the L-shaped groove 541. A ring block 542 is slidably connected to the vertical part of the inner surface of the L-shaped groove 541. A plurality of connecting rods 544 are fixedly connected to the lower end of the ring block 542 in a circumferential distribution. The lower ends of the plurality of connecting rods 544 all penetrate through the L-shaped groove 541 and extend into the first oil cavity 546, and are fixedly connected to a piston ring 545 that is slidably connected to the inner surface of the first oil cavity 546. A second buffer spring 543 sleeving the outer side of the adjacent connecting rod 544 is fixedly connected to the lower end of the ring block 542 in a circumferential distribution. A plurality of sliding grooves 5411 are formed in the horizontal part of the L-shaped groove 541. A plurality of convex blocks 5421 corresponding to the positions of the sliding grooves 5411 are fixedly connected to the inner surface of the ring block 542 in a circumferential distribution.

[0045] Further, to cooperate with the upper die 53 to achieve two-stage stamping, refer to Figure 6 and Figure 7 , an oil cavity two 547 communicating with the oil cavity one 546 is formed in the inner surface of the U-shaped support frame 52. A piston rod 548 is slidably connected to the inner surface of the oil cavity two 547. The upper end of the piston rod 548 penetrates through the inner surface of the oil cavity two 547 and extends to the upper end of the U-shaped support frame 52, and is fixedly connected to a lower die mounting seat 549 through a telescopic rod. A return spring 5491 is fixedly connected between the lower end of the lower die mounting seat 549 and the upper end of the U-shaped support frame 52.

[0046] In summary, the connecting seat 531 moves downward under the action of the first electric telescopic rod 51, and drives the forming seat 534 to move downward through the action of the two-stage pressing rod 5341. Since the upper die mounting seat 536 is not under pressure at this time, it will move downward together with the forming seat 534 until the upper die mounting seat 536 contacts the plate. At this time, the bottom of the plate is supported by the lower die mounting seat 549, and the upper die mounting seat 536 stops moving under the upward acting force, and gradually compresses the first compression spring 535. The upper die mounting seat 536 retracts into the forming seat 534;

[0047] The forming seat 534 continues to move into the L-shaped groove 541 under the action of the connecting seat 531 until it contacts the bottom wall of the horizontal part of the ring block 542, completing the first-stage stamping. At this time, the plate is concave, and its inner wall contacts the inner arc surface of the horizontal part of the ring block 542;

[0048] During this process, the ring block 542 presses the piston ring 545 to move downward through the connecting rod 544, and presses the hydraulic oil in the oil cavity one 546 to move toward the oil cavity two 547. At this time, the oil volume in the oil cavity two 547 rises, prompting the piston rod 548 to move upward and compressing the telescopic rod to the maximum stroke;

[0049] The electric telescopic rod 51 continues to move downward. At this time, the forming seat 534 cannot continue to move downward due to the block of the L-shaped groove 541. The second-stage relay spring 5342 is compressed under force. The connecting seat 531 drives the second-stage pressing rod 5341 to move downward, and continues to press the annular block 542 to move downward along the vertical part of the L-shaped groove 541. During this process, the piston ring 545 presses the hydraulic oil in the first oil cavity 546 into the second oil cavity 547. At this time, there is no margin left for the telescopic rod. When the piston rod 548 continues to rise, it will push the lower die mounting seat 549 upward, and use the specific die installed on the lower die mounting seat 549 to cooperate with the upper die mounting seat 536 to perform a secondary stamping on the concave plate to make it form a predetermined shape;

[0050] When the electric telescopic rod 51 drives the connecting seat 531 to reset, under the action of the buffer spring 543, the annular block 542 will rise, and drive the lower die mounting seat 549 to reset through the return spring 5491. When the annular block 542 resets to the predetermined position, it will drive the finished product to rise to a position flush with the inner wall of the U-shaped support frame 52 through the convex block 5421, realizing automatic demoulding.

[0051] Embodiment 3. On the basis of Embodiment 2, this embodiment uses the cooperation of the U-shaped frame 551 arranged at the rear side of the U-shaped support frame 52 and the electric telescopic rod 552 to realize the automatic loading and unloading of raw materials and finished products. Specifically, the electric telescopic rod 552 is used to drive the U-shaped frame 551 to move forward, push the finished product into the blanking slope 521 through the push rod 553, and finally fall into the material conveying belt 6 through the slope of the blanking slope 521 for centralized conveying, thus realizing automatic blanking; further, through the feeding assembly 554 arranged in the central disk 557 and the limiting strip 556, the raw material plate in the hopper 555 is sent into the feeding assembly 554, and the electric telescopic rod 524 and the wedge block 525 act on the feeding assembly 554 to prompt the plate to enter the predetermined position on the feeding assembly 554, realizing automatic feeding. Through automatic loading and unloading and multi-stage stamping, the preparation process is simplified, and the efficiency is improved, realizing continuous stamping.

[0052] Specifically, to realize loading and unloading after stamping, refer to Figure 8 , a blanking slope 521 is opened at the front part of the inner surface of the U-shaped support frame 52. T-shaped grooves 522 that are symmetrically arranged left and right are opened in the middle of the inner surface of the U-shaped support frame 52 and are slidably connected with the upper die 53. Contact sensors 523 are fixedly installed at the top of the inner surfaces of the two T-shaped grooves 522. Electric telescopic rods 524 are fixedly installed at the lower parts of the inner surfaces of the two T-shaped grooves 522. The output ends of the two electric telescopic rods 524 are fixedly connected with wedge blocks 525 that are slidably connected with the inner surfaces of the T-shaped grooves 522.

[0053] When the connecting seat 531 is at the uppermost position, it will contact the contact sensor 523. At this time, the contact sensor 523 will send a signal to the console 2, and drive the second electric telescopic rod 524 to extend through the console 2, so as to realize the sliding out of the wedge block 525.

[0054] Further, to realize pushing the material out between the upper die 53 and the lower die 54 after stamping is completed, refer to Figure 8 , Figure 9 and Figure 10 , the feeding assembly 55 includes a U-shaped frame 551 slidably connected to the inner surface of the U-shaped support frame 52 and a blanking hopper 555 fixedly connected to the rear part of the inner surface of the U-shaped support frame 52. Push rods 553 are symmetrically and fixedly connected to the front part of the inner surface of the U-shaped frame 551 on the left and right. A central disk 557 is fixedly connected to the rear part of the inner surface of the U-shaped frame 551. A feeding component 554 is arranged symmetrically on the left and right between the inner surface of the central disk 557 and the inner surface of the U-shaped frame 551. Limiting bars 556 are symmetrically and fixedly connected to the rear end of the central disk 557. An electric telescopic rod three 552 is fixedly installed at the rear end of the blanking hopper 555. The output end of the electric telescopic rod three 552 is fixedly connected to the rear part of the inner surface of the U-shaped frame 551.

[0055] When the first electric telescopic rod 51 rises to a certain height, the console 2 controls the third electric telescopic rod 552 to retract, and thereby drives the U-shaped frame 551 to move forward. Further, the finished product is pushed into the material conveying belt 6 from the blanking slope 521 through the push rod 553 installed at the front part of the U-shaped frame 551;

[0056] Synchronously, the sheet material in the blanking hopper 555 will fall into the central disk 557 and be blocked by the feeding component 554, and move forward synchronously with the central disk 557 during the forward movement of the U-shaped frame 551. When the feeding component 554 moves to the position where the wedge block 525 is located, the upper die 53 has not completely reached the uppermost position, and there is a travel difference. Until the upper die 53 completely reaches the upper side, the wedge block 525 approaches the feeding component 554 under the action of the second electric telescopic rod 524 and drives the feeding component 554 to act to send the material to the upper part of the lower die 54. At this time, the limiting bar 556 is located under the blanking hopper 555 to prevent the material from slipping.

[0057] Further, to realize feeding the raw material sheet into the upper part of the lower die 54 after stamping is completed, refer to Figure 10 and Figure 11, the blanking component 554 includes oil chambers three 5544 symmetrically opened on the front and rear inner surfaces of the central disk 557. The inner surfaces of the two oil chambers three 5544 are both slidably connected with locking tongues 5543. A part of the upper end of the U-shaped frame 551 located between the two oil chambers three 5544 is provided with an oil chamber four 5546. The oil chamber four 5546 and the oil chamber three 5544 are jointly provided with a communication pipe 5545. The bottom wall of the inner surface of the oil chamber four 5546 is fixedly connected with a compression spring two 5542. The upper end of the compression spring two 5542 is fixedly connected with a spherical rod 5541 slidably connected with the inner surface of the oil chamber four 5546.

[0058] In the initial state, the locking tongue 5543 is outside the oil chamber three 5544, that is, within the range of the inner surface of the central disk 557. At this time, the plate in the central disk 557 will be blocked by the locking tongue 5543 and cannot continue to move downward;

[0059] When the wedge block 525 extends out, it will press the spherical rod 5541 to move downward. At this time, the hydraulic oil in the oil chamber four 5546 enters the oil chamber three 5544 through the communication pipe 5545, and promotes the locking tongue 5543 to slide into the oil chamber three 5544, thereby releasing the limit on the raw material plate inside the central disk 557, and the plate moves downward along the central disk 557 and lands on the upper side of the lower mold 54;

[0060] When the spherical rod 5541 is separated from the wedge block 525, under the action of the compression spring two 5542, the spherical rod 5541 resets, and the locking tongue 5543 resets.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous stamping device for metal stamping, comprising a punching machine housing (1), four support legs (3) are fixedly connected to the lower end of the punching machine housing (1) in a rectangular distribution, a control console (2) is fixedly installed at the left end of the punching machine housing (1), a discharge port (4) is opened at the front end of the punching machine housing (1), and a material conveying belt (6) is fixedly installed on the inner surface of the punching machine housing (1), characterized in that: On the inner surface of the punch housing (1), a number of stamping structures (5) are fixedly installed in a linear distribution. The stamping structure (5) includes a U-shaped support frame (52) fixedly connected to the inner surface of the punch housing (1). At the upper end of the U-shaped support frame (52), a first electric telescopic rod (51) is fixedly installed. At the output end of the first electric telescopic rod (51) and on the inner surface of the U-shaped support frame (52), an upper die (53) is provided. On the bottom wall of the inner surface of the U-shaped support frame (52), a lower die (54) is provided. At the rear of the inner surface of the U-shaped support frame (52), a feeding assembly (55) is provided.

2. The continuous stamping device for metal stamping according to claim 1, wherein: At the front of the inner surface of the U-shaped support frame (52), a blanking slope (521) is opened. At the middle of the inner surface of the U-shaped support frame (52), T-shaped grooves (522) slidably connected to the upper die (53) are symmetrically opened on the left and right. At the top of the inner surface of each of the two T-shaped grooves (522), a contact sensor (523) is fixedly installed. At the lower part of the inner surface of each of the two T-shaped grooves (522), a second electric telescopic rod (524) is fixedly installed. At the output end of each of the two second electric telescopic rods (524), a wedge block (525) slidably connected to the inner surface of the T-shaped groove (522) is fixedly connected.

3. The continuous stamping device for metal stamping according to claim 2, characterized in that: The upper die (53) includes a connection seat (531) fixedly connected to the output end of the first electric telescopic rod (51). At the lower end of the connection seat (531), a two-stage relay spring (5342) is fixedly connected. At the lower end of the two-stage relay spring (5342), a forming seat (534) slidably connected to the inner surface of the two T-shaped grooves (522) is fixedly connected. Inside the forming seat (534), an upper die mounting seat (536) is slidably connected.

4. A continuous stamping device for metal stamping according to claim 3, characterized in that: At the upper end of the upper die mounting seat (536), a limiting rod (532) is fixedly connected. The upper end of the limiting rod (532) passes through the forming seat (534) and the connection seat (531) and extends into the inner cavity of the connection seat (531) and is slidably connected to the connection seat (531). On the upper part of the outer surface of the limiting rod (532), a first buffer spring (533) fixedly connected to the bottom wall of the inner cavity of the connection seat (531) is fixedly installed. At the upper end of the upper die mounting seat (536), a first compression spring (535) fixedly connected to the top wall of the inner cavity of the forming seat (534) is fixedly connected.

5. The continuous stamping device for metal stamping according to claim 4, wherein: At the lower end of the connection seat (531), a number of two-stage downward pressure rods (5341) are fixedly connected in a circular distribution. The lower ends of the several two-stage downward pressure rods (5341) all pass through the upper end of the forming seat (534) and extend to the lower end of the forming seat (534) and are slidably connected to the inner cavity of the forming seat (534).

6. The continuous stamping device for metal stamping according to claim 1, wherein: The lower die (54) includes an L-shaped groove (541) formed in the bottom wall of the inner surface of the U-shaped support frame (52). A first oil cavity (546) is formed in the lower part of the inner surface of the L-shaped groove (541). A ring block (542) is slidably connected to the vertical part of the inner surface of the L-shaped groove (541). A plurality of connecting rods (544) are fixedly connected to the lower end of the ring block (542) in a circular distribution. The lower ends of the plurality of connecting rods (544) all penetrate through the L-shaped groove (541) and extend into the first oil cavity (546), and are fixedly connected to a piston ring (545) that is slidably connected to the inner surface of the first oil cavity (546). A second buffer spring (543) sleeved outside the adjacent connecting rod (544) is fixedly connected to the lower end of the ring block (542) in a circular distribution. A plurality of sliding grooves (5411) are formed in the horizontal part of the L-shaped groove (541). A plurality of convex blocks (5421) corresponding to the positions of the sliding grooves (5411) are fixedly connected to the inner surface of the ring block (542) in a circular distribution.

7. The continuous stamping device for metal stamping according to claim 6, characterized in that: An oil cavity two (547) communicating with the first oil cavity (546) is formed in the inner surface of the U-shaped support frame (52). A piston rod (548) is slidably connected to the inner surface of the oil cavity two (547). The upper end of the piston rod (548) penetrates through the inner surface of the oil cavity two (547) and extends to the upper end of the U-shaped support frame (52), and is fixedly connected to a lower die mounting seat (549) through a telescopic rod. A return spring (5491) is fixedly connected between the lower end of the lower die mounting seat (549) and the upper end of the U-shaped support frame (52).

8. A continuous stamping device for metal stamping according to claim 1, characterized in that: The feeding assembly (55) includes a U-shaped frame (551) slidably connected to the inner surface of the U-shaped support frame (52) and a feeding hopper (555) fixedly connected to the rear part of the inner surface of the U-shaped support frame (52). Push rods (553) are symmetrically and fixedly connected to the front part of the inner surface of the U-shaped frame (551) on the left and right. A central disc (557) is fixedly connected to the rear part of the inner surface of the U-shaped frame (551). Feeding components (554) are symmetrically arranged on the left and right between the inner surface of the central disc (557) and the inner surface of the U-shaped frame (551). Limit strips (556) are symmetrically and fixedly connected to the rear end of the central disc (557) on the left and right. An electric telescopic rod three (552) is fixedly installed at the rear end of the feeding hopper (555). The output end of the electric telescopic rod three (552) is fixedly connected to the rear part of the inner surface of the U-shaped frame (551).

9. The continuous stamping device for metal stamping according to claim 8, characterized in that: The feeding component (554) includes third oil cavities (5544) symmetrically formed in the front and rear of the inner surface of the central disc (557). Lock tongues (5543) are slidably connected to the inner surfaces of the two third oil cavities (5544). An oil cavity four (5546) is formed in the upper part of the U-shaped frame (551) between the two third oil cavities (5544). A communication pipe (5545) is provided between the oil cavity four (5546) and the third oil cavities (5544). A second compression spring (5542) is fixedly connected to the bottom wall of the inner surface of the oil cavity four (5546). The upper end of the second compression spring (5542) is fixedly connected to a spherical rod (5541) that is slidably connected to the inner surface of the oil cavity four (5546).

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