A high performance anti-stuck punching machine tool

Abstract

The present invention discloses a high-performance anti-stuck material stamping machine, including a machine body, an upper die assembly and a lower die assembly. The crank drive structure inside the machine body drives the upper die assembly to move up and down reciprocatingly. The upper die assembly includes an upper slider, an upper die seat, a fixed plate and an upper stripping plate. The upper die seat is fixedly arranged below the upper slider, and the fixed plate is fixedly arranged below the upper die seat. The upper stripping plate is movably arranged below the fixed plate by screws, and the upper stripping plate and the fixed plate are supported by springs. The present invention is aimed at the stamping machine in the prior art. During continuous stamping processing, due to the thin thickness of the material strip and the long material strip, the pushing force is only provided by one end, and the material is easily stuck. The present invention has the advantages of being provided with a secondary material pulling structure on the lower die seat of the machine tool, and in the reciprocating up and down movement of the machine tool slider, the material pulling mechanism is reciprocated and moved laterally, and the material strip is secondary pulled in the processing section of the material strip, thereby reducing the risk of material jamming.

Description

Technical Field

[0001] The invention relates to the technical field of machine tools, and in particular to a high-performance anti-stuck material punching machine tool. Background Art

[0002] A punch press is a stamping press that converts circular motion into linear motion. The main motor drives the flywheel, which drives the gears, crankshaft (or eccentric gear), connecting rod, etc. through the clutch to achieve the linear motion of the slider. The movement from the main motor to the connecting rod is circular motion. A punch press is generally composed of an upper die, an upper die base, a lower die, a lower die base and other components.

[0003] In the prior art, in order to improve processing efficiency, in the processing of some accessories, parts are generally produced in batches through continuous stamping, so that one device can complete the processing of a product, reduce production costs, and improve processing efficiency. In the prior art, when the accessories are processed by continuous stamping, when the material strip is fed, due to the thin thickness of the material strip, when the material strip is sent to the material strip positioning plate of the lower die seat, there will be a situation where the material strip is bent due to friction and the material is stuck. In addition, since the feeding device of the material strip is arranged at one end of the feeding end of the lower die seat, and due to the characteristics of continuous stamping, the stamping process of continuous stamping is relatively long. Therefore, the material strip will be longer, and the pushing force is only provided by one end, which is prone to jamming.

[0004] In view of the above technical problems, the present invention discloses a high-performance anti-stuck material stamping machine. The present invention has the advantages of being provided with a secondary material pulling structure on the lower die base of the machine, and making the material pulling mechanism move reciprocatingly and laterally during the reciprocating up and down movement of the machine slide block, thereby pulling the material strip for the second time in the processing section of the material strip, reducing the risk of material jamming, etc. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a high-performance anti-stuck material stamping machine to solve the technical problems of the prior art stamping machine, which is prone to material jamming due to the thin thickness and long material strip and only one end providing pushing force during continuous stamping processing. The present invention has the advantages of a secondary material pulling structure on the lower die base of the machine tool, and the material pulling mechanism moves back and forth laterally during the reciprocating up and down movement of the machine tool slider, so that the material strip is pulled secondary in the processing section of the material strip, thereby reducing the risk of material jamming.

[0006] The present invention is realized by the following technical scheme: The present invention discloses a high-performance anti-stuck material stamping machine tool, comprising a machine body, an upper die assembly and a lower die assembly, wherein a crank driving structure inside the machine body drives the upper die assembly to reciprocate up and down, and the upper die assembly comprises an upper slider, an upper die seat, a fixed plate and an upper stripping plate, wherein an upper die seat is fixedly arranged below the upper slider, a fixed plate is fixedly arranged below the upper die seat, the upper stripping plate is movably arranged below the fixed plate by screws, and the upper stripping plate and the fixed plate are supported by springs;

[0007] The lower die assembly comprises a lower die base, a lower table and a concave die, the lower die base is fixedly arranged above the lower table, and the concave die is fixedly arranged above the lower die base;

[0008] A material belt limiting assembly is fixedly provided at the feeding end of the lower die seat, and the material belt limiting assembly includes a limiting plate and a height limiting plate. Two limiting plates are provided, and the two limiting plates are arranged horizontally. A height limiting plate is also fixedly provided above the two limiting plates. Positioning plates for limiting the material belt are provided on both sides above the concave die;

[0009] The lower die is provided with a pulling mechanism, which is located between two positioning plates. An installation groove is opened above the inside of the die, and the installation groove passes through the upper end surface of the die. A connecting groove is opened below the installation groove, and the connecting groove passes through the lower end surface of the die. The pulling mechanism is arranged inside the installation groove.

[0010] Furthermore, the pulling mechanism includes an insert, a movable groove 1, a sealing plate, a movable groove 2, a movable groove 3, a movable block and a pulling column. The insert is slidably inserted into the interior of the mounting groove, and the lower end face of the insert fits with the lower inner wall of the mounting groove. A movable groove 1 is provided inside the insert, and the movable groove 1 passes through the upper end face of the insert. A sealing plate is connected above the insert, a movable groove 2 is provided inside the sealing plate, and the movable groove 2 passes through the upper and lower end faces of the sealing plate. A movable groove 3 is provided on the bottom wall of the insert, and the movable groove 3 passes through the bottom wall of the insert. A movable block is slidably arranged inside the movable groove 1, and a pulling column is fixedly arranged on the top of the movable block. The top of the pulling column passes through the movable groove 2 and extends to the top of the die. The outer wall of the pulling column fits and slides with the inner walls on both sides of the movable groove 2.

[0011] Furthermore, the upper end surface of the sealing plate is flush with the upper end surface of the die, the length and width of the sealing plate are the same as the insert, the width and length of the mounting groove are greater than the width and length of the connecting groove, the width and length of the movable groove two are smaller than the width and length of the movable groove one, and the length of the movable groove three is the same as the connecting groove.

[0012] Furthermore, a clearance groove is provided inside the lower die base, and a driving component is arranged inside the clearance groove.

[0013] Furthermore, a pre-punched hole is opened at the first process of the concave die, and a pre-punch is arranged at the corresponding position of the upper die. The pre-punched hole is a hole that exists on the finished sheet metal product. The diameter of the pre-punched hole is smaller than that of the finished hole. The pre-punched hole and the movable groove 2 are on the same axis. The movable groove 2 is a long strip groove, and the two ends of the movable groove 2 are circular holes. The spacing between the circular holes at the two ends of the movable groove 2 is the same as the step feeding distance. The spacing between the center of the circular hole at one end of the movable groove 2 close to the pre-punched hole and the center of the pre-punched hole is the same as the step feeding distance, and the diameter of the pulling column matches the inner diameter of the pre-punched hole.

[0014] Furthermore, the pulling column is retractable, a movable hole is opened inside the movable block, a through hole is opened above the movable hole, and the through hole passes through the upper end surface of the moving block. The pulling column includes a step and a column body, the step is inserted into the movable hole, the top of the column body passes through the through hole and extends to the top of the moving block, and a spring is arranged at the bottom of the step.

[0015] Furthermore, a latch is provided on the fixed plate at a position corresponding to the circular hole at one end of the movable groove 2 close to the discharge end, and the latch is plugged into and matched with the movable groove 2 and the pre-punched hole on the material belt, and one end of the latch extends to the bottom of the upper stripping plate.

[0016] Furthermore, the driving assembly includes a push rod, a connecting block and a control block. The push rod is installed inside the give way groove, the connecting block is slidably arranged inside the connecting groove, a control block is fixedly arranged above the connecting block, and the control block extends through the moving groove three to the inside of the moving groove one, the control block slides with the moving groove three, a part of the control block is located inside the moving groove one and is on the side of the moving block facing the feeding end, the bottom end of the connecting block extends to the inside of the give way groove and is fixedly connected to one end of the telescopic shaft of the push rod, a snap assembly is arranged between the control block and the moving block, the snap assembly includes a snap ball and a snap hole, the snap ball is fixedly arranged on the side of the control block facing the moving block, a snap hole is opened at the coaxial position of the moving block and the snap ball, and the diameter of the entrance end of the snap hole is smaller than the maximum outer diameter of the snap ball, and the snap ball is made of elastic material.

[0017] Furthermore, the push rod includes a cylinder, a piston block, a telescopic shaft, an oil inlet hole and an oil outlet hole. The cylinder is arranged inside the give way groove, the piston block is arranged inside the cylinder and slidably cooperates with the inner wall of the cylinder, the end of the piston block facing the feeding end is fixedly provided with a telescopic shaft, and one end of the telescopic shaft extends to the outside of the cylinder, the telescopic shaft and the outer wall of one end of the cylinder are in a sliding sealing cooperation, the outer wall of the end of the cylinder close to the discharging end is provided with an oil inlet hole, the outer wall of the end of the cylinder close to the feeding end is provided with an oil outlet hole, and an oil cylinder 1 and an oil cylinder 2 are fixedly provided above the lower table, and the interiors of the oil cylinder 1 and the oil cylinder 2 are both slidably provided with movable The piston plate, the oil inlet hole is connected with the oil cylinder one through the oil pipe, the oil outlet hole is connected with the oil cylinder two through the oil pipe, one end of the oil pipe connected to the oil cylinder one is arranged below the oil cylinder one and is located below the piston plate, one end of the oil pipe connected to the oil cylinder two is arranged above the oil cylinder two and is located above the piston plate, pressure rods are fixedly arranged above the piston plates of the oil cylinders one and two, and the top end of the pressure rods extends to the outside, the pressure rods are respectively matched with the top walls of the oil cylinders one and two in a sliding seal, pressure plates are respectively fixedly arranged below the upper slider and at positions corresponding to the oil cylinders one and two, and the pressure plates are connected to the top ends of the pressure rods through connecting cables.

[0018] Furthermore, the piston plate movement stroke of cylinder one and cylinder two is set to be the same as the movement stroke of the upper release plate, and the spacing between the pressure plate and the pressure rod is set so that when the upper release plate contacts the upper end surface of the die, the pressure plate contacts the top end of the pressure rod.

[0019] The present invention has the following advantages:

[0020] The present invention arranges a fuselage, an upper mold assembly and a lower mold assembly, a material pulling mechanism, a driving component, a first oil cylinder and a second oil cylinder, so that when performing continuous stamping processing, as the slider on the fuselage moves back and forth up and down, the material pulling mechanism can move back and forth laterally inside the mold cavity, so that when the material belt is fed, the material belt can be pulled a second time by the material pulling mechanism at the positioning plate, so that the material is fed by the feeding device, and after the material belt is stuck, the material can be pulled a second time by the material pulling mechanism, thereby reducing the risk of material jamming, reducing the delay in work progress caused by material jamming, and improving efficiency, thereby providing a high-performance anti-jamming stamping machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the lower die base of the present invention;

[0023] Figure 3 It is a schematic diagram of the material strip structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the upper die base of the present invention;

[0025] Figure 5It is a schematic diagram of a partial cross-sectional structure of an upper stripping plate of the present invention;

[0026] Figure 6 For the present invention Figure 2 A local enlarged structural schematic diagram;

[0027] Figure 7 It is a schematic diagram of a partial cross-sectional structure of a concave mold of the present invention;

[0028] Figure 8 For the present invention Figure 7 A schematic diagram of the local enlarged structure at B;

[0029] Fig. 9 For the present invention Figure 7 A schematic diagram of the local enlarged structure at C;

[0030] Fig.10 For the present invention Figure 2 A schematic diagram of the local enlarged structure at E;

[0031] Fig.11 It is a schematic diagram of the cross-sectional structure of the moving block of the present invention;

[0032] Fig.12 For the present invention Figure 8 A schematic diagram of the local enlarged structure at D;

[0033] Fig.13 It is a schematic diagram of the buckle assembly structure of the present invention;

[0034] Fig.14 It is a schematic diagram of the internal structure of the oil cylinder 1 and the oil cylinder 2 of the present invention;

[0035] Fig.15 It is a schematic diagram of the installation position of the oil cylinder 1 and the oil cylinder 2 of the present invention;

[0036] Fig.16 For the present invention Fig.15 Schematic diagram of the local enlarged structure at F.

[0037] In the figure: 1. lower die assembly; 2. upper die assembly; 3. material belt limit assembly; 4. positioning plate; 5. material pulling mechanism; 6. mounting slot; 7. connecting slot; 8. clearance slot; 9. pre-punching hole; 10. pre-punching head; 11. movable hole; 12. through hole; 13. spring; 14. latch; 15. drive assembly; 16. buckle assembly; 17. oil pipe; 18. oil cylinder 1; 19. oil cylinder 2; 20. piston plate; 21. pressure rod; 22. connecting rope; 23. pressure plate; 24. fuselage; 201. upper slide block; 202. upper die seat; 203. fixed plate; 204. upper stripping plate ;101, lower die base;102, lower table;103, die;301, limit plate;302, height limit plate;501, insert;502, movable groove one;503, sealing plate;504, movable groove two;505, movable groove three;506, movable block;507, pulling column;151, push rod;152, connecting block;153, control block;161, snap-on ball;162, snap-on hole;1511, cylinder;1512, piston block;1513, telescopic shaft;1514, oil inlet hole;1515, oil outlet hole;571, step;572, column. DETAILED DESCRIPTION

[0038] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given. However, the protection scope of the present invention is not limited to the following embodiments. In the description of the present invention, words indicating directions or positional relationships such as "front", "rear", "left", and "right" are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] Embodiment 1 discloses a high-performance anti-stuck material punching machine tool, such as Figure 1-Figure 16 As shown, it includes a body 24, an upper die assembly 2 and a lower die assembly 1. The flywheel is rotated by the motor inside the body 24, and the circular motion is converted into linear motion by the crank structure, so that the upper die assembly 2 is pressed down, thereby contacting with the lower die assembly 1 to punch the blank between them, as shown in FIG. Figure 1-Figure 5As shown, the upper die assembly 2 includes an upper slider 201, an upper die seat 202, a fixed plate 203 and an upper stripping plate 204, wherein the upper slider 201 is connected to the flywheel of the fuselage through a crank structure, so that when the flywheel rotates, the upper slider 201 can reciprocate up and down, and the upper die seat 202 is fixedly arranged below the upper slider 201, and a fixed plate 203 is fixedly arranged below the upper die seat 202, and the fixed plate 203 is used to fix the punch and the pin and other convex parts, and the upper stripping plate 204 04 is set under the fixed plate 203 by screws, and the upper stripping plate 204 is movably set under the fixed plate 203, and the upper stripping plate 204 can slide up and down under the fixed plate 203. There is a distance between the upper stripping plate 204 and the fixed plate 203. The upper stripping plate 204 and the fixed plate 203 are supported by the spring 13. The punch and the pin are limited by the upper stripping plate 204. At the same time, the upper stripping plate 204 is used to strip the material during stamping to prevent the material strip from being stuck on the punch and being lifted up;

[0040] The lower die assembly 1 includes a lower table 102, a lower die base 101 and a die 103, wherein the lower table 102 and the fuselage 24 are fixedly arranged to fix the lower die base 101, and the lower die base 101 is fixedly arranged above the lower table 102, and a die 103 is fixedly arranged above the lower die base 101, and the upper die base 202 and the lower die base 101 are limited by guide pillars, and a lower knife edge for punching is opened on the die 103, and the die cooperates with the punch and the punch on the upper die base 202, so that the upper die assembly 2 and the lower die assembly 1 are molded together, and the sheet is placed in the middle for sheet metal stamping processing;

[0041] When processing sheet metal parts, in order to improve the stamping efficiency, it is generally set to continuous stamping processing, and the processing of sheet metal products is divided into multiple steps on the same equipment. For example, some sheet metals need to be formed and punched, but due to the stamping process, it is impossible to complete the punching and forming in one step. Therefore, it is necessary to divide the processing into multiple steps. During the processing, multiple punching machines and multiple manpower are occupied, which increases the processing cost. In order to reduce the processing cost and improve the processing efficiency, through the development of continuous processing machine tools, the material belt is set to the stepping mode, and the processing of the finished product is divided into multiple steps. On one equipment, on the same punching machine, as the material belt is continuously fed in, each stamping can complete the processing of a finished product, so that the efficiency is improved and the manpower and equipment are reduced;

[0042] During continuous stamping, the material strip needs to be fed step by step through the feeding equipment. In order to limit the material strip, such as Figure 1-Figure 4As shown, a material belt limiting assembly 3 is fixedly provided at the feeding end of the lower die base 101. Specifically, the material belt limiting assembly 3 includes a limiting plate 301 and a height limiting plate 302, wherein two limiting plates 301 are provided, and the two limiting plates 301 are arranged horizontally and are located on both sides of the material belt. The material belt is limited by the two limiting plates 301, so that when the material belt is fed from the feeding end of the lower die to the mold cavity, the material belt can be limited and aligned by the two limiting plates 301. In addition, a height limiting plate 302 is fixedly provided above the two limiting plates 301, and the material belt is limited in the height direction by the height limiting plate 302 to ensure the feeding direction of the material belt;

[0043] When the material strip is sent to the die 103 for stamping, in order to prevent the material strip from being deflected on the die 103, positioning plates 4 are also arranged on both sides above the die 103. The positioning plates 4 arranged on both sides limit the material strip on the die 103, thereby improving the accuracy of the material strip feeding direction.

[0044] When feeding through the feeding device, the feeding device is generally arranged on one side of the feeding end of the lower mold assembly 1, and the material strip is fed toward the lower mold through the step feeding of the feeding device. Since the feeding device is located at the feeding end of the lower mold assembly 1, the force of pushing the material strip is pushed from the feeding direction toward the processing direction. Since the lower mold assembly 1 has a material strip limiting component 3 and a positioning plate 4 to limit the material strip, in order to make the limiting precise and avoid the material strip shaking between the two positioning plates 4, resulting in inaccurate feeding, the spacing between the two positioning plates 4 and the spacing between the two limiting plates 301 are generally Matching the width of the material belt, that is, the end faces of the two ends of the material belt are in contact with the outer walls of the two limiting plates 301 facing each other. Similarly, the outer walls of the two positioning plates 4 facing each other are in contact with the end faces of the two ends of the material belt. When the material belt is fed, due to the thin thickness of the material belt, when the material belt is fed to the positioning plate 4, there is a situation where the material belt is bent and stuck due to friction. Therefore, during continuous stamping processing, due to feeding errors of the feeding device, installation errors or the material belt is too thin, it is easy to cause the material belt to be stuck, and the material belt cannot be accurately fed to the next step. The material belt is directly broken, affecting production;

[0045] In order to reduce the risk of material jamming during material feeding, Figure 2-Figure 6As shown, a pulling mechanism 5 is provided at the lower mold assembly 1, and the material strip is pulled to the discharge end of the lower mold assembly 1 by the pulling mechanism 5, so that when the material strip is fed, not only is there a feeding device at the feeding end to push, but also a force is formed at the processing end of the material strip to pull the material strip toward the discharge end. In addition, the pulling mechanism 5 is arranged between two positioning plates 4, so that when the material strip is fed by the feeding device and is stuck, the pulling mechanism 5 can pull the material strip toward the discharge end at the positioning plate 4, reducing the risk of material jamming, and through the setting of the pulling mechanism 5, in the processing process of a long material strip, it is avoided that only the pushing of the feeding end is used for feeding;

[0046] In order to arrange the material drawing mechanism 5 at the die 103, as Figure 2 , Figure 5 , Figure 7 and Figure 8 As shown, a mounting groove 6 is provided at the upper part of the inside of the concave die 103, and the mounting groove 6 passes through the upper end surface of the concave die 103, and a connecting groove 7 is provided below the mounting groove 6, and the connecting groove 7 passes through the lower end surface of the concave die 103, and the width and length of the mounting groove 6 are greater than the width and length of the connecting groove 7, and the pulling mechanism 5 is arranged inside the mounting groove 6;

[0047] Specifically, the pulling mechanism 5 includes an insert 501, a movable groove 1 502, a sealing plate 503, a movable groove 2 504, a movable groove 3 505, a movable block 506 and a pulling column 507, wherein the insert 501 is inserted into the interior of the mounting groove 6, the outer walls of the insert 501 are respectively fitted with the inner walls of the mounting groove 6 and slide in cooperation, the lower end surface of the insert 501 is fitted with the lower inner wall of the mounting groove 6, and the interior of the insert 501 is provided with a movable groove 1 502, and the movable groove 1 502 passes through the upper end surface of the insert 501, and the upper end surface of the insert 501 is detachably connected to a sealing plate 503 by screws, and the upper end surface of the sealing plate 503 is flush with the upper end surface of the concave mold 103, and the length and width of the sealing plate 503 are the same as those of the insert 501, and the movable groove 2 504 is opened inside the sealing plate 503, and the movable groove 2 504 passes through the upper end surface and the lower end surface of the sealing plate 503, and the width and length of the movable groove 2 504 are less than The width and length of the moving groove 1 502 are the same as those of the connecting groove 7, and the width of the moving groove 3 505 is smaller than that of the connecting groove 7. A moving block 506 is slidably arranged inside the moving groove 1 502, and the upper end surface and the lower end surface of the moving block 506 are slidably arranged inside the moving groove 1 502. The end face and both side end faces are respectively fitted and slidably matched with the lower end face of the sealing plate 503, the bottom wall of the movable groove 1 502, and the inner walls of the two sides of the movable groove 1 502. A material pulling column 507 is fixedly provided on the top of the movable block 506, and the top of the material pulling column 507 passes through the movable groove 2 504 and extends to the top of the die 103. The outer wall of the material pulling column 507 is fitted and slidably matched with the inner walls of the two sides of the movable groove 2 504, so that the material strip can be pulled by the material pulling column 507.

[0048] In order to drive the movement of the pulling column 507, a clearance groove 8 is opened inside the lower die base 101, and a driving component 15 is arranged inside the clearance groove 8, and the movement of the moving block 506 is controlled by the driving component 15;

[0049] In addition, in order to enable the pulling column 507 to pull the material strip, as shown in FIG. Figure 2 , Figure 4 and Fig.10As shown, a pre-punched hole 9 is opened at the first process on the concave die 103, and correspondingly, a pre-punch head 10 is set at the corresponding position of the upper die. It should be noted that the pre-punched hole 9 here is a hole that the sheet metal product itself has, and the pre-punched hole 9 here is set with a smaller diameter, smaller than the finished product hole, and the pre-punched hole 9 and the movable groove 2 504 are on the same axis. In addition, the movable groove 2 504 is specifically set as a long strip groove, and the two ends of the movable groove 2 504 are circular holes. The spacing between the circular holes at the two ends of the movable groove 2 504 is the same as the step feeding distance, and the movable groove 2 The distance between the center of the circular hole adjacent to the pre-punched hole 9 at one end of 504 and the center of the pre-punched hole 9 is the same as the step-feeding distance. In other words, when the material strip enters the mold cavity, the first step is to punch out the pre-punched hole 9 on the material strip. In the second step of the step-feeding of the material strip, the pre-punched hole 9 on the material strip will be sent to the circular hole at one end of the second moving slot 504. In the next step of feeding, the pre-punched hole 9 will be sent to the circular hole at the other end of the second moving slot 504. The diameter of the pulling column 507 matches the inner diameter of the pre-punched hole 9. Specifically, the pulling column 507 is plugged into and matched with the pre-punched hole 9 on the material strip.

[0050] In order to allow the pulling column 507 to be inserted into the pre-punched hole 9 on the material strip, Fig.11 As shown, the material pulling column 507 is set to be retractable. Specifically, a movable hole 11 is opened inside the movable block 506, and a through hole 12 is opened above the movable hole 11, and the through hole 12 passes through the upper end surface of the movable block 506. The material pulling column 507 is specifically composed of a step 571 and a column 572. The step 571 is inserted into the inside of the movable hole 11, and the top of the column 572 passes through the through hole 12 and extends to the top of the movable block 506. A spring 13 is set at the bottom of the step 571, and the bottom of the spring 13 contacts the bottom wall of the movable hole 11, so that the material pulling column 507 can be retracted by the setting of the spring 13.

[0051] After the material pulling column 507 pulls the material strip, the material pulling column 507 moves to the end of the movable groove 504 facing the discharge end, so that the material pulling column 507 can be separated from the pre-punched hole 9 on the material strip and moved back to the circular hole at the end of the movable groove 504 facing the feeding end through the driving component 15, as shown in FIG. Figure 4 and Figure 5As shown, a latch 14 is provided at a position corresponding to the circular hole at one end of the fixed plate 203 and the movable groove 2 504 toward the discharge end, and the latch 14 is plugged into and matched with the movable groove 2 504 and the pre-punched hole 9 on the material strip. In addition, one end of the latch 14 extends to the bottom of the upper stripping plate 204. Therefore, when the pulling column 507 moves forward to the end of the movable groove 2 504 toward the discharge end, that is, after the material strip is fed one step, the upper mold is pressed down. At this time, the upper stripping plate 204 of the upper mold will first contact the material strip, and the tip of the latch 14 below the upper stripping plate 204 will be plugged into the inside of the pre-punched hole 9 of the material strip and contact with the pulling column 507. As the upper mold continues to be pressed down, the latch 14 will be inserted into the pre-punched hole 9 and And the latch 14 is separated from the pre-punched hole 9. When the upper stripping plate 204 contacts the concave die 103, the latch 14 is inserted into the through hole 12, so that the material pulling column 507 is retracted into the through hole 12. At this time, the moving block 506 is moved by the driving component 15, so that the moving block 506 moves to the end of the moving groove 2 504 facing the feeding end, and when the moving block 506 moves, the material pulling column 507 is located below the material belt. When the material pulling column 507 moves to the circular hole at the end of the moving groove 2 504 facing the feeding end, the material pulling column 507 is released by the spring 13 to rise and insert into the pre-punched hole 9 of the material belt in the previous step, and then the material belt continues to be pulled toward the discharge end, and this is repeated;

[0052] like Figure 7-Figure 9 As shown, the driving assembly 15 includes a push rod 151, a connecting block 152 and a control block 153, wherein the push rod 151 is installed inside the yield groove 8, and the connecting block 152 is slidably arranged inside the connecting groove 7, and the end faces of the connecting block 152 are respectively fitted and slidably matched with the inner walls of the two sides of the connecting groove 7, and the control block 153 is fixedly arranged above the connecting block 152, and the control block 153 passes through the moving groove three 505 and extends to the inside of the moving groove one 502, and the end faces of the control block 153 are respectively slidably matched with the inner walls of the two sides of the moving groove three 505, and in addition, a part of the control block 153 located inside the moving groove one 502 is on the side of the moving block 506 facing the feeding end, and the bottom end of the connecting block 152 extends to the inside of the yield groove 8 and is fixedly connected to one end of the telescopic shaft 1513 of the push rod 151;

[0053] Therefore, the control block 153 is moved by the telescopic control of the telescopic shaft 1513 of the push rod 151, so as to push the moving block 506, so that the pulling column 507 moves. In order to enable the moving block 506 to move when the control block 153 moves toward the feeding end, a buckle assembly 16 is provided between the control block 153 and the moving block 506. The control block 153 and the moving block 506 are detachably connected through the buckle assembly 16, and are specifically configured so that when the control block 153 moves toward the feeding end, the moving block 506 can be driven to move, and when the control block 153 moves toward the discharging end, the moving block 506 is pushed to move.

[0054] Specifically, Figure 8 , Fig.12 and Fig.13 As shown, the snap assembly 16 includes a snap-in ball 161 and a snap-in hole 162. The snap-in ball 161 is fixedly arranged on the side of the control block 153 facing the moving block 506, and the moving block 506 is provided with a snap-in hole 162 at a coaxial position with the snap-in ball 161, and the inlet end diameter of the snap-in hole 162 is smaller than the maximum outer diameter of the snap-in ball 161. The snap-in ball 161 is made of an elastic material. In addition, the length of the moving groove 2 504 is set to be smaller than the length of the connecting groove 7 and the moving groove 1 502, so that when the control block 153 moves toward the discharge end, the control block 153 pushes the moving block 506 to move toward the discharge end, and when the moving block 506 moves to one end of the moving groove 1 502, it stops moving, and the control block 153 Continuing to move will cause the locking ball 161 to deform and be inserted into the locking hole 162. When the control block 153 moves toward the feeding end, the control block 153 can drive the moving block 506 to move toward the feeding end through the cooperation of the locking ball 161 and the locking hole 162. Since the length of the second moving groove 504 is less than the length of the connecting groove 7, in other words, when the pulling column 507 moves to one end of the second moving groove 504 and is limited, the control block 153 and the connecting block 152 still have space to move. Therefore, when the pulling column 507 is limited, the moving block 506 will also be limited, and the control block 153 and the connecting block 152 continue to move toward the feeding end, so that the locking ball 161 can be separated from the locking hole 162.

[0055] Therefore, by setting the speed of the control block 153 moving toward the discharge end to be slower than the feeding speed of the feeding device, the feeding device first feeds the material belt each time the material is fed in steps, and the material belt is fed through the plug-in cooperation of the pre-punched hole 9 and the material pulling column 507, and the control block 153 and the moving block 506 are not connected by the clamping ball 161 at this time. Therefore, when the material belt is fed, the moving block 506 will be driven to move synchronously, and then the telescopic shaft 1513 of the push rod 151 moves, so that the control block 153 moves with the rear end of the moving block 506. When the material is stuck, the material belt stops, and the control block 153 moves to contact the moving block 506 and pushes the moving block 506 toward the discharge end, so that the material pulling column 507 pulls the material belt to reduce the risk of material jamming.

[0056] In order to achieve the above purpose, when the upper mold assembly 2 is pressed down, the material pulling column 507 moves to the side toward the feeding end, and when the upper mold assembly 2 moves up, when the feeding device feeds the material, the material pulling column 507 can move toward the discharge end with the movement of the material belt and pull the material belt, such as Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 , Fig.14 , Fig.15 and Fig.16 As shown, the push rod 151 is configured to include a cylinder 1511, a piston block 1512, a telescopic shaft 1513, an oil inlet hole 1514 and an oil outlet hole 1515, wherein the cylinder 1511 is arranged inside the make way groove 8 and is fixedly connected to the inner wall of the make way groove 8, and the piston block 1512 is arranged inside the cylinder 1511 and is slidably matched with the inner wall of the cylinder 1511, and the end of the piston block 1512 facing the feeding end is fixedly provided with a telescopic shaft 1513, and one end of the telescopic shaft 1513 is fixedly provided with a telescopic shaft 1513. The end of the cylinder 1511 extends to the outside of the cylinder 1511, the telescopic shaft 1513 and the outer wall of one end of the cylinder 1511 are in sliding sealing cooperation, the outer wall of one end of the cylinder 1511 is provided with an oil inlet hole 1514, and the outer wall of the other end of the cylinder 1511 is provided with an oil outlet hole 1515, and the oil inlet hole 1514 is at the discharge end, and the oil outlet hole 1515 is at the feeding end. In addition, the oil inlet hole 1514 and the oil outlet hole 1515 are respectively connected to the oil pipe 17, and the oil pipe 17 extends to the outside of the concave mold 103, and the lower stage An oil cylinder 18 is fixedly arranged above the surface 102, and an oil cylinder 2 19 is arranged on one side of the oil cylinder 18. A piston disk 20 is slidably arranged inside the oil cylinder 18 and the oil cylinder 2 19. The oil inlet hole 1514 is connected to the oil cylinder 18 through the oil pipe 17, and the oil outlet hole 1515 is connected to the oil cylinder 2 19 through the oil pipe 17. One end of the oil pipe 17 connected to the oil cylinder 18 is arranged below the oil cylinder 18 and below the piston disk 20, and the oil pipe 17 connected to the oil cylinder 2 19 is arranged below the oil cylinder 18 and below the piston disk 20. The end is arranged above the oil cylinder 19 and above the piston plate 20. A pressure rod 21 is fixedly arranged above the piston plate 20 of the oil cylinder 18 and the oil cylinder 2 19, and the top end of the pressure rod 21 extends to the outside. The pressure rod 21 is respectively slidably sealed with the top wall of the oil cylinder 18 and the oil cylinder 2 19. In addition, a pressure plate 23 is fixedly arranged below the upper slider 201 and at the corresponding position of the oil cylinder 18 and the oil cylinder 2 19, and the pressure plate 23 is connected to the top end of the pressure rod 21 through a connecting cable 22;

[0057] It should be noted that the oil in the oil cylinder 18 is located below the piston disc 20, while the oil in the oil cylinder 2 19 is located above the piston disc 20;

[0058] Therefore, when the upper slider 201 is pressed down, the upper slider 201 presses the pressure rod 21 downward through the pressure plate 23, so that the piston plate 20 inside the oil cylinder 18 moves downward, thereby discharging the oil from the lower oil pipe 17 to the oil inlet hole 1514, so that the piston block 1512 inside the push rod 151 moves toward the feeding end, so that when the upper die seat 202 is pressed down, the pulling column 507 resets and moves to the end of the moving groove 2 504 close to the feeding end. At the same time, the piston plate 20 inside the oil cylinder 19 is pressed down by the pressure rod 21, so that the oil on the other side of the piston block 1512 inside the cylinder 1511 can be In order to be sucked into the interior of the oil cylinder 19, in addition, it should be noted that the piston plate movement stroke of the oil cylinder 18 and the oil cylinder 19 is set to be the same as the movement stroke of the upper stripping plate 204, and the spacing between the pressure plate 23 and the pressure rod 21 is set so that when the upper stripping plate 204 contacts the upper end surface of the die 103, the pressure plate 23 contacts the top of the pressure rod 21. Therefore, only after the upper stripping plate 204 is pressed down and the latch 14 pushes the pulling column 507 to the inside of the through hole 12, the oil cylinder 18 starts to supply oil to the push rod 151, so that the control block 153 drives the moving block 506 to move;

[0059] When the upper slider 201 moves upward, the connecting cable 22 drives the pressure rod 21 upward, so that the piston disk 20 inside the oil cylinder 18 moves upward to suck the oil into the oil cylinder 18, and at the same time, the piston disk 20 inside the oil cylinder 19 moves upward so that the internal oil can be discharged into the side of the piston block 1512 inside the cylinder 1511 toward the feeding end through the oil outlet 1515 and the oil pipe 17, so that the piston block 1512 inside the cylinder 1511 moves toward the discharge end, and the telescopic shaft 1513 drives the control block 153 to move toward the discharge end. It should be noted that by setting the length of the connecting cable 22, after the upper stripping plate 204 moves upward and separates from the die 103, and the feeding device starts stepping feeding, the connecting cable 22 is tightened, so that the pressure rod 21 moves upward, and then the movement of the control block 153 is later than the feeding of the feeding device.

[0060] The principle of the present invention is as follows: when the present invention is working, the material is first fed manually, and the material strip is fed from the feeding end to the first process on the die 103, the upper slider 201 is pressed down to perform pre-punching 9, and then the material strip continues to be fed to the next process, and the next pressing is continued, and the next feeding is continued, and the pulling column 507 is pressed down so that the pulling column 507 is located below the material strip, and the pulling column 507 is inserted into the pre-punching hole 9 of the material strip through the action of the spring 13, and then the upper slider 201 is pressed down to perform the next process punching. When the upper die seat 202 is pressed down, when the upper stripping plate 204 contacts the upper end surface of the die 103, the latch 14 will be inserted into the pre-punching hole 9 and press the pulling column 507 down. At the same time, the pressure plate 23 contacts the top of the pressure rod 21, and the cylinder 18 starts to supply oil to the push rod 151, so that the control block 153 drives the moving block 506 to move, so that the moving block 506 moves to the moving groove 502. The end near the feeding end, and the pulling column 507 moves to the pre-punched hole 9 of the material belt, and then the upper slide block 201 moves up. After the upper stripping plate 204 moves up and separates from the die 103, the feeding device starts stepping feeding, and the connecting rope 22 is tightened, so that the pressure rod 21 moves up, and then the piston plate 20 inside the oil cylinder 18 moves up to suck the oil into the oil cylinder 18, and at the same time, the piston plate 20 inside the oil cylinder 2 19 moves up so that the internal oil can be discharged through the oil outlet. The hole 1515 and the oil pipe 17 are discharged into the side of the piston block 1512 inside the cylinder 1511 toward the feeding end, so that the piston block 1512 inside the cylinder 1511 moves toward the discharging end, and the telescopic shaft 1513 drives the control block 153 to move toward the discharging end. The control block 153 will move the moving block 506 toward the discharging end, and the pulling column 507 inserted in the pre-punched hole 9 will pull the material belt toward the discharging end, thereby pulling the material, and this process is repeated.

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-performance anti-stuck punching machine tool, comprising a machine body (24), an upper die assembly (2) and a lower die assembly (1), characterized in that: The crank drive structure inside the body (24) drives the upper mold assembly (2) to move reciprocatingly up and down, the upper mold assembly (2) comprising an upper slider (201), an upper mold base (202), a fixed plate (203) and an upper stripping plate (204), the upper mold base (202) being fixedly arranged below the upper slider (201), the fixed plate (203) being fixedly arranged below the upper mold base (202), the upper stripping plate (204) being movably arranged below the fixed plate (203) by means of screws, and the upper stripping plate (204) and the fixed plate (203) being supported by a spring (13); The lower die assembly (1) comprises a lower die base (101), a lower table (102) and a concave die (103); the lower die base (101) is fixedly arranged above the lower table (102), and the concave die (103) is fixedly arranged above the lower die base (101); A material strip limiting assembly (3) is fixedly provided at the feeding end of the lower die seat (101), the material strip limiting assembly (3) comprising a limiting plate (301) and a height limiting plate (302), two limiting plates (301) are provided, the two limiting plates (301) are arranged transversely, and the height limiting plate (302) is also fixedly provided above the two limiting plates (301), and positioning plates (4) for limiting the material strip are provided on both sides above the concave die (103); The lower die is provided with a material pulling mechanism (5), the material pulling mechanism (5) is located between the two positioning plates (4), a mounting groove (6) is provided at the upper part of the inside of the die (103), the mounting groove (6) passes through the upper end surface of the die (103), a connecting groove (7) is provided below the mounting groove (6), the connecting groove (7) passes through the lower end surface of the die (103), and the material pulling mechanism (5) is arranged inside the mounting groove (6); The material pulling mechanism (5) comprises an insert (501), a movable groove 1 (502), a sealing plate (503), a movable groove 2 (504), a movable groove 3 (505), a movable block (506) and a material pulling column (507); the insert (501) is slidably inserted into the interior of the mounting groove (6); the lower end surface of the insert (501) is in contact with the lower inner wall of the mounting groove (6); the insert (501) is provided with a movable groove 1 (502) and the movable groove 1 (502) passes through the upper end surface of the insert (501); the insert (501) is connected with a sealing plate (503) above; the sealing plate (503) is provided with a movable groove A movable groove (504) is provided, and the movable groove (504) passes through the upper end surface and the lower end surface of the sealing plate (503); a movable groove (505) is provided on the bottom wall of the insert (501); a movable block (506) is slidably arranged inside the movable groove (502); a pulling column (507) is fixedly arranged on the top of the movable block (506); the top end of the pulling column (507) passes through the movable groove (504) and extends to the top of the die (103); the outer wall of the pulling column (507) is in contact with and slidably fits with the inner walls on both sides of the movable groove (504); The die (103) is provided with a pre-punched hole (9) at the first process, and a pre-punch head (10) is provided at the corresponding position of the upper die. The pre-punched hole (9) is a hole that exists on the finished sheet metal product. The diameter of the pre-punched hole (9) is smaller than that of the finished product hole. The pre-punched hole (9) and the movable groove 2 (504) are on the same axis. The movable groove 2 (504) is a long strip groove, and the two ends of the movable groove 2 (504) are circular holes. The spacing between the circular holes at the two ends of the movable groove 2 (504) is the same as the step feeding distance. The spacing between the center of the circular hole at one end of the movable groove 2 (504) close to the pre-punched hole (9) and the center of the pre-punched hole (9) is the same as the step feeding distance. The diameter of the pulling column (507) matches the inner diameter of the pre-punched hole (9).

2. A high-performance anti-stuck material punching machine tool as claimed in claim 1, characterized in that: The upper end surface of the sealing plate (503) is flush with the upper end surface of the die (103); the length and width of the sealing plate (503) are the same as those of the insert (501); the width and length of the mounting groove (6) are greater than the width and length of the connecting groove (7); the width and length of the second movable groove (504) are less than the width and length of the first movable groove (502); and the length of the third movable groove (505) is the same as that of the connecting groove (7).

3. A high-performance anti-stuck material punching machine tool as claimed in claim 2, characterized in that: A clearance groove (8) is provided inside the lower die base (101), and a driving assembly (15) is arranged inside the clearance groove (8).

4. A high-performance anti-stuck material punching machine tool as claimed in claim 1, characterized in that: The material pulling column (507) is retractable, a movable hole (11) is provided inside the movable block (506), a through hole (12) is provided above the movable hole (11), and the through hole (12) passes through the upper end surface of the movable block (506), the material pulling column (507) comprises a step (571) and a column (572), the step (571) is inserted into the movable hole (11), the top end of the column (572) passes through the through hole (12) and extends to the top of the movable block (506), and a spring (13) is provided at the bottom of the step (571).

5. A high-performance anti-stuck material punching machine tool as claimed in claim 4, characterized in that: A latch (14) is provided on the fixed plate (203) at a position corresponding to the circular hole at one end of the movable groove (504) close to the discharge end, and the latch (14) is plugged into and matched with the movable groove (504) and the pre-punched hole (9) on the material strip, and one end of the latch (14) extends to the bottom of the upper stripping plate (204).

6. A high-performance anti-stuck punching machine tool as claimed in claim 5, characterized in that: The driving assembly (15) comprises a push rod (151), a connecting block (152) and a control block (153); the push rod (151) is installed inside the yielding groove (8); the connecting block (152) is slidably arranged inside the connecting groove (7); a control block (153) is fixedly arranged above the connecting block (152); the control block (153) passes through the movable groove three (505) and extends to the inside of the movable groove one (502); the control block (153) is slidably matched with the movable groove three (505); a part of the control block (153) located inside the movable groove one (502) is located on the side of the movable block (506) facing the feeding end; the connecting block (152) The bottom end of the control block (153) extends into the interior of the clearance groove (8) and is fixedly connected to one end of the telescopic shaft (1513) of the push rod (151). A snap assembly (16) is provided between the control block (153) and the moving block (506). The snap assembly (16) comprises a snap ball (161) and a snap hole (162). The snap ball (161) is fixedly arranged on a side of the control block (153) facing the moving block (506). The moving block (506) is provided with a snap hole (162) at a coaxial position with the snap ball (161). The diameter of the entrance end of the snap hole (162) is smaller than the maximum outer diameter of the snap ball (161). The snap ball (161) is made of an elastic material.

7. A high-performance anti-stuck punching machine tool as claimed in claim 6, characterized in that: The push rod (151) comprises a cylinder (1511), a piston block (1512), a telescopic shaft (1513), an oil inlet hole (1514) and an oil outlet hole (1515); the cylinder (1511) is arranged inside the clearance groove (8); the piston block (1512) is arranged inside the cylinder (1511) and slidably cooperates with the inner wall of the cylinder (1511); the end of the piston block (1512) facing the feeding end is fixedly provided with the telescopic shaft (1513), and the telescopic shaft (1513) ) extends to the outside of the cylinder (1511), the telescopic shaft (1513) and the outer wall of one end of the cylinder (1511) are in sliding sealing cooperation, the outer wall of one end of the cylinder (1511) close to the discharge end is provided with an oil inlet hole (1514), the outer wall of one end of the cylinder (1511) close to the feeding end is provided with an oil outlet hole (1515), and an oil cylinder 1 (18) and an oil cylinder 2 (19) are fixedly arranged above the lower table (102), and the oil cylinder 1 (18) and the oil cylinder 2 (19) are connected to each other. A piston disk (20) is slidably arranged inside, the oil inlet hole (1514) is connected to the oil cylinder one (18) through the oil pipe (17), and the oil outlet hole (1515) is connected to the oil cylinder two (19) through the oil pipe (17), one end of the oil pipe (17) connected to the oil cylinder one (18) is arranged below the oil cylinder one (18) and below the piston disk (20), and one end of the oil pipe (17) connected to the oil cylinder two (19) is arranged above the oil cylinder two (19) and above the piston disk (20). A pressure rod (21) is fixedly arranged above the piston plate (20) of the oil cylinder one (18) and the oil cylinder two (19), and the top end of the pressure rod (21) extends to the outside. The pressure rod (21) is respectively slidably sealed with the top wall of the oil cylinder one (18) and the oil cylinder two (19). A pressure plate (23) is fixedly arranged below the upper slider (201) and at a position corresponding to the oil cylinder one (18) and the oil cylinder two (19), and the pressure plate (23) is connected to the top end of the pressure rod (21) through a connecting rope (22).

8. A high-performance anti-stuck punching machine tool as claimed in claim 7, characterized in that: The travel stroke of the piston plates (20) of the oil cylinder one (18) and the oil cylinder two (19) is set to be the same as the travel stroke of the upper release plate (204), and the spacing between the pressure plate (23) and the pressure rod (21) is set so that when the upper release plate (204) contacts the upper end surface of the die (103), the pressure plate (23) contacts the top end of the pressure rod (21).

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