Stamping die convenient to clean

Abstract

The invention is suitable for the technical field of stamping dies, and provides a stamping die convenient to clean, which comprises an upper die base, a lower die base, a lower backing plate, an upper backing plate, a concave die plate and a convex die plate, and further comprises a guide assembly and an airflow cleaning assembly, the guide assembly comprises a convex guide block and an auxiliary guide module, the convex guide block can collect and store gas in the gas collecting groove through the airflow cleaning assembly, and can compress the gas in a space defined by the gas outlet groove, the gas collecting groove and the gas inlet groove, so that the gas rapidly flows from a high-pressure area to a low-pressure area through the gas outlet groove, and the gas flow cleaning effect is improved. By means of the mode that the stamping die plate reciprocates to drive the airflow to intermittently clean the female die plate, periodical automatic cleaning of the female die plate can be achieved, and the traditional mode of manual repeated shutdown and manual cleaning is abandoned.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping dies, and in particular relates to a stamping die that is easy to clean. Background Art

[0002] A stamping die is a special process equipment used in cold stamping to process materials (metal or non-metal) into parts (or semi-finished products). Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material to cause it to separate or plastically deform, thereby obtaining the required parts.

[0003] The existing stamping die can drive the fan to create a negative pressure area inside the dust box, so that it generates suction. Then, the waste remaining in the mold groove can be cleaned through the vacuum hose and nozzle. By driving the electric air pump and then aiming the nozzle at the mold surface, the dust and debris remaining on the surface can be cleaned, avoiding defects or poor products during product processing, and preventing friction and wear between the stamping die and the waste, which will reduce the service life of the mold.

[0004] Although existing stamping dies have certain cleaning functions, their cleaning method still relies mainly on manual operation. The operator needs to manually control the vacuum hose and nozzle and clean the mold surface and grooves one by one. This cleaning method is not only inefficient and consumes a lot of manpower and time, but also requires the stamping equipment to be shut down during the cleaning process to ensure the safety of the operator. The shutdown not only affects the production efficiency of the workpiece, but may also cause the interruption of the production line, thereby increasing the stamping cost.

[0005] Therefore, in view of the above situation, there is an urgent need to develop a stamping die that is easy to clean to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide a stamping die that is easy to clean, so as to solve the problems in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The top of the lower die is installed with a lower plate, and the lower plate and the concave plate are installed in sequence. The convex plate is located inside the lower plate, and the inner wall of the lower plate is circumferentially provided with a guide groove. The inner wall of the lower plate is circumferentially provided with an air collecting groove. An air outlet groove and a slide groove are respectively provided on one side of the air collecting groove, and the air outlet groove and the slide groove are connected with the guide groove. An air inlet groove is provided at the other end of the air collecting groove, and the air collecting groove is connected with the outside of the lower plate through the air inlet groove. A mounting groove for mounting a jacking assembly is provided in the middle of the lower plate, and one end of the jacking assembly cooperates with the concave plate. The invention also includes:

[0009] A guide assembly, the guide assembly comprising a convex guide block and an auxiliary guide module, the convex guide block being circumferentially distributed on the side wall of the upper pad and vertically slidingly engaged with the guide groove on the lower pad, one end of the auxiliary guide module being disposed on the upper die base, and the other end of the auxiliary guide module being disposed on the lower die base, the auxiliary guide module guiding the downward movement of the upper die base and the convex guide block;

[0010] An airflow cleaning assembly includes an exhaust collecting module and an air intake blocking module. One end of the exhaust collecting module is installed in the air collecting groove, and the other end of the exhaust collecting module extends into the guide groove through the slide groove, and the other end of the exhaust collecting module is intermittently connected to the convex guide block. The air intake blocking module is threadedly installed in the air intake groove and is connected to the air collecting groove. The airflow cleaning assembly realizes periodic automatic cleaning of the concave template by high-speed airflow through cooperation with the convex guide block.

[0011] As a further technical solution of the present invention, the air outlet groove is a groove body with a conical cross-section. Two air inlet holes are provided on one side of the air outlet groove. Both of the air inlet holes are connected to the guide groove, and the two air inlet grooves are distributed up and down and have different inclination angles.

[0012] As a further technical solution of the present invention, the exhaust module includes a piston block, a piston rod, a connecting pressure plate and a second spring. The piston block is vertically slidably installed in the air collecting groove and fits against the inner wall of the air collecting groove. A piston rod is fixed to one end of the piston block, and a connecting pressure plate is installed at one end of the piston rod. One end of the connecting pressure plate is connected to the lower mold base through the second spring, and the other end of the connecting pressure plate extends into the guide groove through the slide groove and is intermittently connected to the convex guide block.

[0013] As a further technical solution of the present invention, the air intake blocking module includes a threaded tube, a tapered tube, a straight tube, a slider, a block, a sliding column, a mounting bracket, a blocking block and a spring. One end of the threaded tube is threadedly installed in the air intake groove, and the other end of the threaded tube is fixedly connected to the tapered tube and is communicated with each other. One end of the tapered tube is fixedly connected to the straight tube, and a slider is slidably installed in the threaded tube, the outer wall of the slider fits the inner wall of the threaded tube, and one side of the slider intermittently cooperates with the block fixed on the inner wall of the threaded tube, one end of the slider is fixed with a sliding column, and the sliding column is horizontally slidably connected to the mounting bracket fixed on the inner wall of the threaded tube, one end of the sliding column extends into the tapered tube and is fixedly connected to the blocking block, the outer wall of the blocking block is intermittently slidably connected to the inner wall of the straight tube, and one side of the blocking block is connected to the mounting bracket through spring three.

[0014] As a further technical solution of the present invention, a stepped arc groove is provided on one side of the slider close to the stop block, and the arc groove cooperates with the stop block to complete the sealing of the threaded tube and the air inlet groove.

[0015] As a further technical solution of the present invention, the end with a larger diameter on the conical tube is connected to the threaded tube, and the end with a smaller diameter on the conical tube is connected to the straight tube. The inner diameter of the straight tube is consistent with the outer diameter of the blocking block, and a sealing ring is installed on the outer wall of the blocking block.

[0016] As a further technical solution of the present invention, the auxiliary guide module includes a guide sleeve, a guide column and a spring. The guide sleeve is fixed on the upper mold base, the guide column is fixed on the lower mold base, the guide sleeve and the guide column are slidably matched, and the outer sleeve of the guide sleeve is provided with a spring. The spring intermittently contacts the upper mold base.

[0017] As a further technical solution of the present invention, the jacking assembly includes a T-shaped column, a spring four, a blocking plate and a jacking block. The T-shaped column slides vertically in the installation groove. One end of the T-shaped column is connected to the blocking plate through a spring four. The blocking plate is used to block the installation groove. The other end of the T-shaped column extends into the lower pad and is connected to the jacking block. The jacking block cooperates with the concave template.

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

[0019] The convex guide block can not only complete the collection and storage of gas in the gas collecting groove through the air flow cleaning component, but also compress the gas in the space surrounded by the air outlet groove, the air collecting groove and the air inlet groove, so that the interior is in a high-pressure state. Since the pressure of its internal space is greater than the external pressure, a large pressure difference is formed between the high pressure in the space and the external atmospheric pressure. This pressure difference will become the driving force for gas expansion and diffusion, so that the gas will flow rapidly from the high-pressure area to the low-pressure area through the air outlet groove, thereby forming a high-speed airflow and completing the rapid cleaning of the inside of the concave template. The reciprocating motion of the stamping template is used to drive the airflow to intermittently clean the concave template, which can realize periodic automatic cleaning of the concave template, abandoning the traditional manual repeated shutdown manual cleaning method, and can more effectively remove foreign particles and other pollutants attached to the hard-to-reach corners of the concave template, ensuring the surface smoothness of the stamping workpiece, and improving the aesthetics and stamping quality of the stamping workpiece;

[0020] At the same time, when the gas in the gas collecting tank is squeezed, it will first gather in the air outlet groove. As the pressure increases, the compressed air looks for a release path. At this time, the conical air outlet groove begins to play a role. It uses its own structural characteristics to adjust the internal air pressure so that the gas can be discharged smoothly and orderly within a safe range. Due to the upper and lower distribution of the two air inlet holes and the different inclination angles, when the high-pressure gas is ejected from the two air inlet holes, two extremely fast air flow beams with different directions will be formed. These two high-speed air flows point to different positions of the concave template respectively, thereby achieving a comprehensive coverage cleaning effect on the entire working surface, which can more effectively remove impurity particles and other pollutants attached to the hard-to-reach corners of the concave template.

[0021] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a stamping die that is easy to clean provided by an embodiment of the present invention.

[0023] Figure 2 A structural cross-sectional view of a stamping die that is easy to clean provided by an embodiment of the present invention.

[0024] Figure 3 A structural diagram of a stamping die that is easy to clean provided in an embodiment of the present invention.

[0025] Figure 4 for Figure 1 Schematic diagram of the structure of the middle and lower pads and airflow cleaning components.

[0026] Figure 5 for Figure 2 A magnified view of the structure in the middle.

[0027] Figure 6 for Figure 4 An enlarged view of the structure of the middle air intake blocking module.

[0028] Figure 7 for Figure 6 Structural cross-sectional view of the middle air intake blocking module.

[0029] Figure 8 for Figure 4 Structural explosion diagram of the middle air intake blocking module.

[0030] Figure 9 for Figure 2 A magnified view of the structure at B in the middle.

[0031] Reference numerals: 100-upper die base, 200-lower die base, 210-mounting groove, 300-lower plate, 310-guide groove, 320-air outlet groove, 330-air collecting groove, 340-air inlet groove, 350-slide groove, 400-concave template, 500-guide assembly, 510-convex guide block, 520-auxiliary guide module, 521-guide sleeve, 522-guide column, 523-spring 1, 600-upper plate, 700-convex template, 800-air flow cleaning assembly, 810- Exhaust module, 811-piston block, 812-piston rod, 813-connecting pressure plate, 814-spring two, 820-intake sealing module, 821-threaded tube, 822-tapered tube, 823-straight tube, 824-slider, 825-stopper, 826-sliding column, 827-mounting frame, 828-blocking block, 829-spring three, 830-arc groove, 900-lifting assembly, 910-T-column, 920-spring four, 930-blocking plate, 940-lifting block. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0034] like Figures 1 to 8As shown, as an embodiment of the present invention, a stamping die that is easy to clean is provided, which includes an upper die base 100, a lower die base 200, a lower pad 300, an upper pad 600, a concave die plate 400 and a convex die plate 700. The bottom of the upper die base 100 is sequentially installed with an upper pad 600 and a convex die plate 700, and the top of the lower die base 200 is sequentially installed with a lower pad 300 and a concave die plate 400. The convex die plate 700 is located inside the lower pad 300. The inner wall of the lower pad 300 is circumferentially distributed with a guide groove 310, and the inner circumference of the lower pad 300 is circumferentially distributed with an air collecting groove 330, and one side of the air collecting groove 330 is respectively provided with an air outlet. Groove 320 and chute 350, the air outlet groove 320 and chute 350 are both connected to the guide groove 310, the other end of the air collecting groove 330 is provided with an air inlet groove 340, the air collecting groove 330 is connected to the outside of the lower pad 300 through the air inlet groove 340, the middle part of the lower pad 300 is provided with a mounting groove 210 for installing the jacking assembly 900, one end of the jacking assembly 900 is matched with the concave plate 400, the jacking assembly 900 can lift the stamped workpiece in time through the concave plate 400, thereby facilitating the staff to quickly pick up the stamped workpiece and improve the stamping efficiency of the stamped workpiece, and also includes:

[0035] The guide assembly 500 includes a convex guide block 510 and an auxiliary guide module 520. The convex guide block 510 is circumferentially distributed on the side wall of the upper pad 600 and vertically slides with the guide groove 310 on the lower pad 300. One end of the auxiliary guide module 520 is disposed on the upper die base 100, and the other end of the auxiliary guide module 520 is disposed on the lower die base 200. The auxiliary guide module 520 can guide the downward movement of the upper die base 100 and ensure that it can accurately cooperate with the lower die base 200, thereby ensuring accurate cooperation between the convex plate 700 and the concave plate 400, improving the stamping quality of the workpiece, and thereby improving the stamping accuracy of the stamping die;

[0036] The airflow cleaning assembly 800 includes an air collection and exhaust module 810 and an air intake blocking module 820. One end of the air collection and exhaust module 810 is installed in the air collection groove 330, and the other end of the air collection and exhaust module 810 extends into the guide groove 310 through the slide groove 350. The other end of the air collection and exhaust module 810 is intermittently connected to the convex guide block 510. The air intake blocking module 820 is threadedly installed in the air intake groove 340 and communicates with the air collection groove 330.

[0037] Under the action of external force, the upper die base 100 drives the upper pad 600 and the convex die plate 700 to move downward synchronously. The upper pad 600 drives the convex guide blocks 510 distributed around it to move downward synchronously and slide vertically in the guide groove 310. In the initial state, the air intake blocking module 820 blocks the air intake groove 340, thereby preventing external impurities from entering the air intake groove 340 and the air collecting groove 330, ensuring the stable and continuous operation of the air collecting and exhausting module 810 and extending its service life.

[0038] When the convex guide block 510 moves down to be connected with one end of the gas collecting and exhaust module 810, the convex guide block 510 has completed the blocking of the gas outlet groove 320, so that the space surrounded by the gas outlet groove 320, the gas collecting groove 330 and the gas inlet groove 340 is in a closed state, and the convex guide block 510 drives the other end of the gas collecting and exhaust module 810 to move down in the guide groove 310. The other end of the gas collecting and exhaust module 810 can expand the volume in the space and put it in a negative pressure state by moving downward. The force generated by the negative pressure can drive the gas inlet blocking module 820 to work, so that the gas inlet blocking module 820 can restore the connection between the gas inlet groove 340 and the outside world during this process, thereby allowing the outside gas to quickly enter the gas collecting groove 330, thereby realizing the collection and storage of gas;

[0039] When the male plate 700 and the female plate 400 are combined with each other and the stamping work of the workpiece is completed, the upper die holder 100 drives the upper pad 600 and the male plate 700 to move upward synchronously under the action of external force, and the upper pad 600 drives the convex guide block 510 to move upward. At this time, the exhaust module 810 is in an upward movement. By moving upward, the exhaust module 810 can squeeze the gas in the gas collecting groove 330, so that the gas in the space is compressed and the space is in a high-pressure state. The force generated by the high pressure can drive the air intake blocking module 820 to resume blocking the air intake groove 340 again.

[0040] During the process of the convex guide block 510 moving upward without releasing the air outlet groove 320, the gas in the space is continuously compressed. When the convex guide block 510 moves upward to the position where the air outlet groove 320 is released, the air collecting groove 330 is restored to the connected state with the outside world. Since the pressure of its internal space is greater than the external pressure, a large pressure difference is formed between the high pressure in the space and the external atmospheric pressure. This pressure difference will become the driving force for gas expansion and diffusion, causing the gas to flow rapidly from the high-pressure area to the low-pressure area through the air outlet groove 320, thereby forming a high-speed airflow and completing the rapid cleaning of the inside of the concave template 400. The reciprocating motion of the stamping template is used to drive the airflow to intermittently clean the concave template 400, which can realize periodic automatic cleaning of the concave template 400, abandoning the traditional manual repeated shutdown method of manual cleaning, and can more effectively remove impurity particles and other contaminants attached to the hard-to-reach corners of the concave template 400, ensure the surface smoothness of the stamped workpiece, and improve the aesthetics and stamping quality of the stamped workpiece.

[0041] In a preferred embodiment, the outer shape of the convex guide block 510 matches the shape of the guide groove 310, so that the convex guide block 510 can effectively complete the sealing of the air outlet groove 320 during the downward movement process, ensuring the sealing of the space. At the same time, the gap between the two can be filled by adding a sealing ring or a sealing strip to further improve the sealing performance.

[0042] like Figure 2 As shown in FIG. 1 , as a preferred embodiment of the present invention, the gas outlet groove 320 is a groove body with a conical cross-section. Two gas inlet holes are provided on one side of the gas outlet groove 320. Both gas inlet holes are connected to the guide groove 310. The two gas inlet grooves 340 are distributed up and down and have different inclination angles. The conical design of the gas outlet groove 320 not only helps to efficiently collect and guide the gas flow, but also can effectively control the speed and direction of gas release through its gradually shrinking outlet.

[0043] When the gas in the gas collecting groove 330 is squeezed, it will first gather in the gas outlet groove 320. As the pressure increases, the compressed air looks for a release path. At this time, the conical gas outlet groove 320 begins to play a role. It uses its own structural characteristics to adjust the internal air pressure so that the gas can be discharged smoothly and orderly within a safe range. Due to the upper and lower distribution of the two air inlet holes and the different inclination angles, when the high-pressure gas is ejected from the two air inlet holes, two extremely fast air flow beams with different directions will be formed. These two high-speed air flows are respectively directed to different positions of the concave template 400, thereby achieving a comprehensive coverage cleaning effect on the entire workpiece surface, and can more effectively remove foreign particles and other pollutants attached to the hard-to-reach corners of the concave template 400.

[0044] like Figures 2 to 8As shown, as a preferred embodiment of the present invention, the gas collecting and exhausting module 810 includes a piston block 811, a piston rod 812, a connecting pressure plate 813 and a second spring 814. The piston block 811 is vertically slidably installed in the gas collecting groove 330 and fits against the inner wall of the gas collecting groove 330. One end of the piston block 811 is fixed with a piston rod 812, and one end of the piston rod 812 is installed with a connecting pressure plate 813. One end of the connecting pressure plate 813 is connected to the lower mold base 200 through the second spring 814. The other end of the connecting pressure plate 813 extends into the guide groove 310 through the slide groove 350 and is intermittently connected to the convex guide block 510.

[0045] When the convex guide block 510 moves down to the position connected to the connecting pressure plate 813, the convex guide block 510 drives the connecting pressure plate 813 to move down synchronously, and the connecting pressure plate 813 drives the piston rod 812 to move down synchronously and squeeze the spring 2 814, and the piston rod 812 drives the piston block 811 to move down in the gas collecting groove 330, so that it expands the volume of the space surrounded by the gas outlet groove 320, the gas collecting groove 330 and the gas inlet groove 340 and puts it in a negative pressure state. The force generated by the negative pressure can drive the gas inlet blocking module 820 to work, so that the gas inlet blocking module 820 can restore the connection between the gas inlet groove 340 and the outside world during this process, thereby allowing the outside gas to quickly enter the gas collecting groove 330, thereby realizing the collection and storage of gas;

[0046] When the convex guide block 510 rises and drives the connecting pressure plate 813 to rise synchronously, the piston block 811 moves upward and squeezes the gas in the gas collecting groove 330, so that the gas in the space is compressed and the space is in a high-pressure state. The force generated by the high pressure can drive the air inlet blocking module 820 to resume blocking the air inlet groove 340.

[0047] During the process of the convex guide block 510 moving upward without releasing the air outlet groove 320, the gas in the space is continuously compressed. When the convex guide block 510 moves upward to the position where the air outlet groove 320 is released, the air collecting groove 330 is restored to the connected state with the outside world. Since the pressure of its internal space is greater than the external pressure, a large pressure difference is formed between the high pressure in the space and the external atmospheric pressure. This pressure difference will become the driving force for gas expansion and diffusion, causing the gas to flow rapidly from the high-pressure area to the low-pressure area through the air outlet groove 320, thereby forming a high-speed airflow and completing the rapid cleaning of the inside of the concave template 400, thereby realizing periodic automatic cleaning of the concave template 400, abandoning the traditional manual cleaning method of repeated shutdown, and can more effectively remove foreign particles and other pollutants attached to the hard-to-reach corners of the concave template 400.

[0048] In a preferred embodiment, during the rising process of the convex guide block 510, the connecting pressure plate 813 can always be connected to the convex guide block 510 under the drive of the elastic force of the spring 2 814, thereby completing the compression of the gas in the gas collecting tank 330. However, this requires that the spring 2 814 has a sufficiently large elastic potential energy. Therefore, an electrically controlled high-suction electromagnet can be set on the contact surface between the convex guide block 510 and the connecting pressure plate 813. Through high-intensity and mutual attraction, the convex guide block 510 in the rising process can drive the connecting pressure plate 813 to rise synchronously, thereby satisfying the compression of the gas in the gas collecting tank 330. The specific connection structure between the two can be adaptively selected and adjusted according to actual production.

[0049] like Figures 2 to 8 As shown, as a preferred embodiment of the present invention, the air intake blocking module 820 includes a threaded tube 821, a tapered tube 822, a straight tube 823, a slider 824, a stopper 825, a slide column 826, a mounting bracket 827, a blocking block 828 and a spring 829. One end of the threaded tube 821 is threadedly installed in the air intake groove 340, and the other end of the threaded tube 821 is fixedly connected to the tapered tube 822 and communicated with each other. One end of the tapered tube 822 is fixedly connected to the straight tube 823, and a slider 824 is slidably installed in the threaded tube 821. The slider 824 The outer wall fits the inner wall of the threaded tube 821, and one side of the slider 824 intermittently cooperates with the stopper 825 fixed on the inner wall of the threaded tube 821. A sliding post 826 is fixed to one end of the slider 824. The sliding post 826 is horizontally slidably connected to the mounting bracket 827 fixed on the inner wall of the threaded tube 821. One end of the sliding post 826 extends into the tapered tube 822 and is fixedly connected to the blocking block 828. The outer wall of the blocking block 828 is intermittently slidably connected to the inner wall of the straight tube 823. One side of the blocking block 828 is connected to the mounting bracket 827 via a spring 829.

[0050] In the initial state, spring three 829 can drive the blocking block 828 to slide into the tapered tube 822 through its own elastic force, so that the blocking block 828 can complete the blocking of the tapered tube 822. The blocking block 828 can drive the slider 824 to cooperate with the block 825 through the sliding column 826, so that the slider 824 and the block 825 can jointly block the threaded tube 821, thereby achieving the blocking of the air inlet groove 340, preventing foreign matter from entering the air inlet groove 340 and the air collecting groove 330, ensuring the stable and continuous operation of the air collecting and exhaust module 810, and extending its service life.

[0051] When the space surrounded by the gas outlet groove 320, the gas collecting groove 330 and the gas inlet groove 340 is in a negative pressure state and the force generated by the negative pressure is greater than the elastic force of the spring three 829, the force generated by the negative pressure drives the slider 824 to move in the direction away from the stopper 825, so that the slider 824 is separated from the stopper 825, thereby releasing the blockage of the threaded tube 821. At the same time, the slider 824 drives the blocking block 828 to move synchronously through the sliding column 826, so that the blocking block 828 slides out of the straight tube 823 and slides into the tapered tube 822, thereby releasing the blockage of the straight tube 823 and restoring the connection between the gas inlet groove 340 and the outside, so that the outside gas can quickly enter the gas collecting groove 330, thereby realizing the collection and storage of gas;

[0052] When the space enclosed by the air outlet groove 320, the air collecting groove 330 and the air inlet groove 340 is in a high-pressure state, the force generated by the high pressure cooperates with the elastic force of the spring 3 829 to drive the slider 824 to slide in the opposite direction, so that the slider 824 cooperates with the stopper 825 and restores the blockage of the threaded tube 821, and at the same time drives the blocking block 828 to slide into the straight tube 823 and restore the blockage of the straight tube 823, so that the space is restored to a closed state again, ensuring that the gas in the space can be effectively compressed, laying a solid and effective foundation for the subsequent output of high-speed airflow;

[0053] A stepped arcuate groove 830 is provided on the side of the slider 824 near the stopper 825. The arcuate groove 830 cooperates with the stopper 825, which not only completes the sealing of the threaded tube 821 and thus completes the sealing of the air inlet groove 340, but also controls the movement of the blocking block 828 so that it does not separate from the straight tube, thereby ensuring the sealing effect of the blocking block 828 on the straight tube, further improving the sealing performance of the air inlet groove 340, and improving the airtightness inside the space, providing a basic guarantee for the subsequent storage and compression of gas in the gas collecting groove 330.

[0054] The end with a larger diameter on the conical tube 822 is connected to the threaded tube 821, and the end with a smaller diameter on the conical tube 822 is connected to the straight tube 823. The inner diameter of the straight tube 823 is consistent with the outer diameter of the blocking block 828, or slightly larger than the outer diameter of the blocking block 828, and a sealing ring is installed on the outer wall of the blocking block 828, so as to ensure the sealing performance between the two and ensure that it can effectively block the air inlet groove 340.

[0055] In a preferred embodiment, the outer wall of the slider 824 is also installed with a sealing ring that fits with the inner wall of the threaded tube 821. The stopper 825 and the threaded tube 821 are preferably manufactured by an integral molding process.

[0056] The mounting frame 827 can not only guide the sliding column 826, but also limit the moving stroke of the blocking block 828, thereby limiting the moving stroke of the slider 824 so that it will not separate from the threaded tube 821, ensuring the sustainable operation of the exhaust module 810.

[0057] like Figures 1 to 3 As shown, as a preferred embodiment of the present invention, the auxiliary guide module 520 includes a guide sleeve 521, a guide post 522 and a spring 1 523. The guide sleeve 521 is fixed to the upper die base 100, and the guide post 522 is fixed to the lower die base 200. The guide sleeve 521 and the guide post 522 are slidably engaged. The outer side of the guide sleeve 521 is provided with a spring 1 523, and the spring 1 523 intermittently contacts the upper die base 100.

[0058] When the upper die base 100 moves downward under the action of external force, the guide column 522 and the guide sleeve 521 cooperate with each other, which can not only complete the precise positioning of the convex die plate 700 and the concave die plate 400, ensure the accurate fit of the convex die plate 700 and the concave die plate 400, improve the stamping quality of the workpiece, and thus improve the stamping accuracy of the stamping die, but also complete the precise positioning of the convex guide block 510 and the guide groove 310, so that the convex guide block 510 can accurately slide with the guide groove 310, ensuring that the convex guide block 510 can effectively drive the airflow cleaning assembly 800 to work reciprocatingly through the upward and downward movement, providing basic conditions for the periodic self-cleaning of the concave die plate 400.

[0059] like Figure 1 、 Figure 2 、 Figure 3 and Figure 9 As shown, as a preferred embodiment of the present invention, the jacking assembly 900 includes a T-shaped column 910, a spring four 920, a blocking plate 930 and a jacking block 940. The T-shaped column 910 slides vertically in the installation groove 210. One end of the T-shaped column 910 is connected to the blocking plate 930 through the spring four 920. The blocking plate 930 is used to block the installation groove 210. The other end of the T-shaped column 910 extends into the lower pad 300 and is connected to the jacking block 940. The jacking block 940 cooperates with the concave template 400.

[0060] When the concave plate 400 and the convex plate 700 complete the stamping operation on the workpiece, the convex plate 700 rises synchronously with the upper die base 100. At this time, the spring four 920 drives the T-shaped column 910 to move upward through its own elastic force, and the T-shaped column 910 drives the lifting block 940 to move upward, so that the lifting block 940 can complete the lifting of the workpiece through the concave plate 400, which is convenient for the staff to quickly pick up the stamped workpiece and improve the stamping efficiency of the stamped workpiece.

[0061] In a preferred embodiment, the type and specifications of the lifting block 940 can be adaptively adjusted according to the concave template 400. For example, the lifting block 940 can be replaced with a pin structure, or the lifting block 940 can be replaced with a block structure consistent with the inner wall structure of the concave template 400, so that during the stamping process of the workpiece, the lifting block 940 can act as a part of the concave template 400, and during the rising process of the convex template 700, the workpiece can be directly lifted by elastic force.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

The top of described lower die plate is equipped with upper die and lower dies, and lower die plate is equipped with lower dies, and lower dies are installed in the mould of described mould base, and lower dies are installed in the mould base in sequence. Also includes: A guide assembly, the guide assembly comprising a convex guide block and an auxiliary guide module, the convex guide block being circumferentially distributed on the side wall of the upper pad and vertically slidingly engaged with the guide groove on the lower pad, one end of the auxiliary guide module being disposed on the upper die base, and the other end of the auxiliary guide module being disposed on the lower die base, the auxiliary guide module guiding the downward movement of the upper die base and the convex guide block; An airflow cleaning assembly includes an exhaust collecting module and an air intake blocking module. One end of the exhaust collecting module is installed in the air collecting groove, and the other end of the exhaust collecting module extends into the guide groove through the slide groove, and the other end of the exhaust collecting module is intermittently connected to the convex guide block. The air intake blocking module is threadedly installed in the air intake groove and is connected to the air collecting groove. The airflow cleaning assembly realizes periodic automatic cleaning of the concave template by high-speed airflow through cooperation with the convex guide block.

2. The punching die that is easy to clean according to claim 1, characterized in that: The air outlet groove is a groove body with a conical cross-section. Two air inlet holes are provided on one side of the air outlet groove. Both of the air inlet holes are connected to the guide groove, and the two air inlet grooves are distributed up and down and have different inclination angles.

3. The punching die that is easy to clean according to claim 1, characterized in that: The exhaust module includes a piston block, a piston rod, a connecting pressure plate and a second spring. The piston block is vertically slidably installed in the air collecting groove and fits against the inner wall of the air collecting groove. A piston rod is fixed to one end of the piston block, and a connecting pressure plate is installed at one end of the piston rod. One end of the connecting pressure plate is connected to the lower mold base through the second spring, and the other end of the connecting pressure plate extends into the guide groove through the slide groove and is intermittently connected to the convex guide block.

4. The punching die that is easy to clean according to claim 1, characterized in that: The air intake blocking module includes a threaded tube, a tapered tube, a straight tube, a slider, a block, a sliding column, a mounting bracket, a blocking block and a spring. One end of the threaded tube is threadedly installed in the air intake groove, and the other end of the threaded tube is fixedly connected to the tapered tube and communicated with each other. One end of the tapered tube is fixedly connected to a straight tube, and a slider is slidably installed in the threaded tube, the outer wall of the slider fits the inner wall of the threaded tube, and one side of the slider intermittently cooperates with the block fixed on the inner wall of the threaded tube, one end of the slider is fixed with a sliding column, and the sliding column is horizontally slidably connected to the mounting bracket fixed on the inner wall of the threaded tube, one end of the sliding column extends into the tapered tube and is fixedly connected to the blocking block, the outer wall of the blocking block is intermittently slidably connected to the inner wall of the straight tube, and one side of the blocking block is connected to the mounting bracket through spring three.

5. The punching die that is easy to clean according to claim 4, characterized in that: A stepped arc groove is provided on one side of the sliding block close to the stop block, and the arc groove cooperates with the stop block to complete the blocking of the threaded tube and the air inlet groove.

6. The punching die that is easy to clean according to claim 4, characterized in that: The end with a larger diameter on the tapered tube is connected to the threaded tube, and the end with a smaller diameter on the tapered tube is connected to the straight tube. The inner diameter of the straight tube is consistent with the outer diameter of the blocking block, and a sealing ring is installed on the outer wall of the blocking block.

7. The punching die that is easy to clean according to claim 1, characterized in that: The auxiliary guide module includes a guide sleeve, a guide column and a spring. The guide sleeve is fixed on the upper mold base, and the guide column is fixed on the lower mold base. The guide sleeve and the guide column are slidably matched. The outer sleeve of the guide sleeve is provided with a spring. The spring intermittently contacts the upper mold base.

8. The easy-to-clean stamping die according to claim 1, characterized in that: The jacking assembly includes a T-shaped column, a spring four, a blocking plate and a jacking block. The T-shaped column slides vertically in the installation groove. One end of the T-shaped column is connected to the blocking plate through a spring four. The blocking plate is used to block the installation groove. The other end of the T-shaped column extends into the lower pad and is connected to the jacking block. The jacking block cooperates with the concave template.

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