Chamfering stamping die with positive pressure blowing structure

Abstract

The utility model is applied to the technical field of stamping dies, and discloses a chamfer stamping die with a positive pressure blowing structure, which comprises a base, hydraulic rods are fixedly mounted on the upper surfaces of two ends of the base, the upper ends of the hydraulic rods are fixedly connected with a top plate, a lower die is fixedly arranged on the upper surface of the base, and the top plate is fixedly connected with the lower die. An upper mold is fixedly installed on the lower surface of the top plate, a supporting column is fixedly arranged at the upper end of the lower mold, a sliding limiting column is installed at the upper end of the supporting column, one end of a pressure relief groove penetrates through the inner side surface of the upper end of the lower mold, and the other end of the pressure relief groove penetrates through the upper surface of the lower mold; one end of a pressure hole penetrates through the inner side surface of the lower end of the supporting column. According to the chamfering stamping die with the positive-pressure blowing structure, by means of the pressurizing mechanism, air is blown into the upper end of the lower die before stamping to generate strong and uniform positive-pressure airflow, chippings generated by chamfering are rapidly and thoroughly cleaned out of the die in an all-dimensional and dead-angle-free mode, and chippings are prevented from remaining.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a chamfering stamping die with a positive pressure blowing structure. Background Technology

[0002] In modern industrial production, stamping dies are widely used in various metal processing fields. Especially when chamfering parts, stamping dies can complete production tasks efficiently and accurately, greatly improving production efficiency and product quality.

[0003] However, existing chamfering stamping dies still have some problems that need to be solved in actual use. During the chamfering stamping process, a large amount of debris will inevitably be generated. If these debris are not cleaned in time, they will remain in the cavity and working surface of the die, affecting the accuracy and surface quality of subsequent stamped parts, resulting in product defects and reducing the product qualification rate. On the other hand, the accumulation of debris may also cause wear to the moving parts of the die, shorten the service life of the die, and increase the production cost and equipment maintenance cost of enterprises.

[0004] Currently, although some stamping dies employ simple cleaning methods, such as manual cleaning or conventional air blowing, manual cleaning is inefficient and cannot guarantee thorough cleaning. Conventional air blowing, due to its unreasonable structural design, has poor air blowing effect and cannot effectively clean the debris generated by chamfering. Therefore, developing a stamping die that can effectively clean the debris generated by chamfering before stamping has significant practical significance and market demand. Utility Model Content

[0005] The purpose of this invention is to provide a chamfering stamping die with a positive pressure blowing structure, so as to solve the problems mentioned in the background art that the existing chamfering stamping dies are insufficient in cleaning debris, resulting in product quality being affected, die life being shortened, and cleaning efficiency and effect being low.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a chamfering stamping die with a positive pressure blowing structure, comprising a base, hydraulic rods fixedly installed on the upper surfaces of both ends of the base, and a top plate fixedly connected to the upper end of the hydraulic rods; a lower die fixedly installed on the upper surface of the base; an upper die fixedly installed on the lower surface of the top plate; a support column fixedly installed on the upper end of the lower die, and a sliding limiting column installed on the upper end of the support column; one end of a pressure relief groove penetrates the inner surface of the upper end of the lower die, and the other end of the pressure relief groove penetrates the upper surface of the lower die; one end of a pressure hole penetrates the inner surface of the lower end of the support column, and the other end of the pressure hole penetrates the outer surface of the lower die; and a cavity is formed on the upper surface of the lower die.

[0007] The upper surface of the base is provided with a pressurizing mechanism, which blows air into the upper part of the lower die before stamping to clean the debris generated by the chamfer.

[0008] The pressurizing mechanism includes: a pressurizing chamber located inside the lower end of the lower mold, a pressure-dividing chamber located inside the lower mold above the pressurizing chamber, and a bottom spray hole located at the upper end of the pressure-dividing chamber; a piston plate located inside the pressurizing chamber, and a second piston rod fixedly mounted on the outer surface of the middle section of the piston plate; a second piston cylinder fixedly mounted on the outer surface of the lower end of the lower mold, and a first piston cylinder fixedly connected to the end of the second piston cylinder away from the lower mold, with a sliding first piston rod located at the upper end of the first piston cylinder; a pressure-dividing groove located inside the inner surface of the upper end of the lower mold; a connecting groove connecting the pressure-dividing groove and the pressure-dividing chamber to the pressurizing chamber, and the connecting groove located inside the inner surface of the lower mold; and a jet nozzle located on the inner surface of the upper end of the lower mold.

[0009] Preferably, the support column and the limiting column are connected by sliding friction, and a spring is connected between the support column and the limiting column.

[0010] By adopting the above technical solution, during the stamping process, the upper die presses down on the workpiece, and the workpiece pushes the limiting post to slide downward relative to the support post. At this time, the spring is compressed, and the spring force can provide an upward restoring force for the limiting post, ensuring that the limiting post can quickly reset after the workpiece leaves, so as to facilitate the next stamping operation. At the same time, the sliding friction connection makes the movement of the limiting post smooth, and can accurately control the displacement of the workpiece during stamping, thereby ensuring the accuracy of chamfering and ensuring that the chamfer size of the workpiece produced each time is consistent, thus improving product quality.

[0011] Preferably, the bottom spray hole and the cavity are designed to correspond one-to-one, and the upper end of the bottom spray hole penetrates the inner bottom surface of the cavity.

[0012] By adopting the above technical solution, when the high-pressure gas in the pressurizing chamber enters the pressure dividing chamber, it can directly act on the bottom of the cavity through the bottom spray hole. This one-to-one correspondence design can ensure that the bottom of each cavity can receive effective gas injection, accurately blow away the residual debris at the bottom of the cavity, avoid debris accumulation at the bottom of the cavity, ensure the bottom surface quality of the stamped part, prevent defects at the bottom of the stamped part due to debris residue, and improve the product qualification rate.

[0013] Preferably, the piston plate and the pressurizing chamber are connected by sliding friction, and columnar slide rods are provided at both ends of the piston plate. The columnar slide rods at both ends of the piston plate penetrate the outer surface of the lower mold. The columnar slide rods at both ends of the piston plate are slidably connected to the lower mold, and springs are connected between the columnar slide rods at both ends of the piston plate and the lower mold.

[0014] Using the above technical solution, when the piston plate slides in the pressurization chamber, the columnar slide rods at both ends serve as guides to ensure that the piston plate slides smoothly in the pressurization chamber, making the compressed air process stable and reliable, thereby generating stable high-pressure gas for cleaning debris. On the other hand, the spring connecting the columnar slide rods and the lower die can quickly reset the piston plate after it completes the gas pushing action, preparing it for the air blowing cleaning before the next stamping, ensuring that the entire cleaning process can be carried out continuously and efficiently.

[0015] Preferably, the second piston rod and the second piston cylinder are connected by sliding friction, and one end of the second piston cylinder is connected to the lower end of the first piston cylinder.

[0016] By adopting the above technical solution, when the first piston rod slides downward in the first piston cylinder, since the second piston cylinder is connected to the first piston cylinder and the second piston rod is connected by sliding friction, the movement of the first piston rod can be reliably transmitted to the second piston rod. This structural design ensures the stability of power transmission, makes the movement of the piston plate in the pressurization chamber stable, and thus stably compresses the air to generate high-pressure gas, providing a stable air source for cleaning debris and ensuring the reliability of the air blowing cleaning effect.

[0017] Preferably, the first piston cylinder and the first piston rod are connected by sliding friction, and the upper end of the first piston rod is positioned directly opposite the lower surface of the top plate.

[0018] By adopting the above technical solution, before stamping, when the top plate moves downward with the upper die, it can directly press down the first piston rod. The sliding friction connection makes the movement of the first piston rod smooth, ensuring that the downward pressing action of the top plate can be efficiently converted into the sliding of the first piston rod in the first piston cylinder. Then, through the communication structure between the first piston cylinder and the second piston cylinder, the piston plate is pushed to slide in the pressure chamber to generate high-pressure gas, realizing automatic air blowing and cleaning of the mold before stamping, simplifying the operation process and improving production efficiency.

[0019] Preferably, one end of the air jet is angled downwards, and the angled downwards end of the air jet penetrates the upper inner surface of the lower mold. The air jets are evenly spaced, and the other end of the air jet penetrates the inner surface of the pressure dividing groove.

[0020] By adopting the above technical solution, the downwardly angled jet holes can eject the high-pressure gas entering from the pressure distribution groove at a specific angle, which can effectively blow away debris from the side of the cavity wall and chamfer. The evenly spaced arrangement ensures that the entire cavity wall and chamfer are uniformly purged by the gas, avoiding cleaning dead corners and achieving all-round, dead-angle-free cleaning of the mold interior. This ensures that there are no debris residues in the mold before stamping, effectively improving product quality.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the chamfering stamping die equipped with a positive pressure blowing structure:

[0022] 1. With the help of the pressurizing mechanism, air is blown into the upper part of the lower die before stamping to generate a strong and uniform positive pressure airflow, which can quickly and thoroughly clean the debris generated by chamfering out of the die from all directions without dead angles, effectively avoiding debris residue.

[0023] 2. By thoroughly removing debris, its adverse effects on the precision and surface quality of subsequent stamped parts are avoided. Due to the effective cleaning of debris by structures such as bottom nozzles and air nozzles, product defects are reduced, product qualification rate is significantly improved, and the quality of the produced parts is more reliable, meeting higher quality standards.

[0024] 3. The sliding mechanism of the piston plate within the pressurization chamber provides a stable positive pressure blowing process, thereby reducing abnormal wear of the mold caused by debris during the stamping process and extending the service life of the mold;

[0025] 4. Compared with the low efficiency of traditional cleaning methods and the poor effect of conventional air blowing cleaning, the positive pressure air blowing structure of this mold can quickly complete the cleaning of debris before stamping, without much manual intervention, saving cleaning time, speeding up the production pace, and improving overall production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram of the connection between the first piston cylinder and the first piston rod of this utility model;

[0028] Figure 3 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;

[0029] Figure 4 This is a three-dimensional structural diagram of the connection between the lower mold, support column, and limiting column of this utility model;

[0030] Figure 5 This is a three-dimensional structural diagram of the connection between the piston plate, the second piston rod, and the second piston cylinder of this utility model.

[0031] Figure 6 This is a three-dimensional structural diagram of the connection between the lower mold and the cavity of this utility model.

[0032] In the diagram: 1. Base; 2. Hydraulic rod; 3. Top plate; 4. Lower mold; 5. Upper mold; 6. Support column; 7. Limiting column; 8. Pressure relief groove; 9. Pressure hole; 10. Cavity; 11. Pressurizing chamber; 12. Pressure dividing chamber; 13. Bottom spray hole; 14. Piston plate; 15. Second piston rod; 16. Second piston cylinder; 17. First piston cylinder; 18. First piston rod; 19. Pressure dividing groove; 20. Connecting groove; 21. Air jet hole. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-6 This utility model provides a technical solution: a chamfering stamping die with a positive pressure blowing structure.

[0035] Example 1: This example discloses: a base 1, with hydraulic rods 2 fixedly installed on the upper surfaces of both ends of the base 1, and a top plate 3 fixedly connected to the upper end of the hydraulic rods 2. A lower mold 4 is fixedly installed on the upper surface of the base 1, and an upper mold 5 is fixedly installed on the lower surface of the top plate 3. A support column 6 is fixedly installed on the upper end of the lower mold 4, and a sliding limiting column 7 is installed on the upper end of the support column 6. One end of a pressure relief groove 8 penetrates the inner surface of the upper end of the lower mold 4, and the other end of the pressure relief groove 8 penetrates the upper surface of the lower mold 4. One end of a pressure hole 9 penetrates the inner surface of the lower end of the support column 6, and the other end of the pressure hole 9 penetrates the outer surface of the lower mold 4. A cavity 10 is opened on the upper surface of the lower mold 4.

[0036] The support column 6 and the limiting column 7 are connected by sliding friction, and a spring connects the support column 6 and the limiting column 7.

[0037] The hydraulic rod 2 on the upper surface of the base 1 is activated, which drives the top plate 3 and the upper mold 5 to move up and down. The workpiece placed on the upper end of the lower mold 4 is stamped and shaped through the cavity 10 to be chamfered. The hydraulic rod 2 opens, causing the top plate 3 and the upper mold 5 to rise, completing one stamping cycle.

[0038] During stamping, the upper die 5 presses down on the workpiece, causing the workpiece to contact the limiting post 7. The limiting post 7 slides downward relative to the support post 6 and compresses the spring until the limiting post 7 and the support post 6 are in contact. In this way, the displacement of the workpiece is controllable, ensuring the accuracy of the chamfering process. During the movement of the workpiece, the pressure relief groove 8 releases the pressure between the lower surface of the workpiece and the upper end of the lower die 4, so as to ensure that the workpiece can move down smoothly.

[0039] When the limiting post 7 and the support post 6 slide relative to each other, the gas is discharged through the pressure hole 9 to prevent excessive pressure from damaging the structure of the limiting post 7 and the support post 6, maintain pressure balance, and ensure the normal operation of the mold.

[0040] Example 2: This example is based on Example 1: A pressurizing mechanism is provided on the upper surface of the base 1. Before stamping, air is blown into the upper part of the lower die 4 to clean the debris generated by the chamfer.

[0041] The pressurizing mechanism includes: a pressurizing chamber 11, which is located inside the lower end of the lower mold 4. A pressure-dividing chamber 12 is located inside the lower mold 4 above the pressurizing chamber 11. A bottom spray hole 13 is located at the upper end of the pressure-dividing chamber 12. A piston plate 14 is located inside the pressurizing chamber 11. A second piston rod 15 is fixedly located on the outer surface of the middle section of the piston plate 14. A second piston cylinder 16 is fixedly located on the outer surface of the lower end of the lower mold 4. A first piston cylinder 17 is fixedly connected to the end of the second piston cylinder 16 away from the lower mold 4. A sliding first piston rod 18 is located at the upper end of the first piston cylinder 17. A pressure-dividing groove 19 is located inside the upper side surface of the lower mold 4. A connecting groove 20 is connected between the pressure-dividing groove 19, the pressure-dividing chamber 12, and the pressurizing chamber 11. The connecting groove 20 is located inside the side surface of the lower mold 4. A jet hole 21 is located on the inner side surface of the upper end of the lower mold 4.

[0042] The bottom spray hole 13 and the cavity 10 are designed to correspond one-to-one, and the upper end of the bottom spray hole 13 penetrates the inner bottom surface of the cavity 10;

[0043] The piston plate 14 is connected to the pressure chamber 11 by sliding friction, and columnar slide rods are provided at both ends of the piston plate 14. The columnar slide rods at both ends of the piston plate 14 penetrate the outer surface of the lower mold 4. The columnar slide rods at both ends of the piston plate 14 are slidably connected to the lower mold 4, and a spring is connected between the columnar slide rods at both ends of the piston plate 14 and the lower mold 4.

[0044] The second piston rod 15 and the second piston cylinder 16 are connected by sliding friction, and one end of the second piston cylinder 16 is connected to the lower end of the first piston cylinder 17.

[0045] The first piston cylinder 17 and the first piston rod 18 are connected by sliding friction, and the upper end of the first piston rod 18 is positioned directly opposite the lower surface of the top plate 3.

[0046] One end of the jet hole 21 is set at an angle downward, and the end of the jet hole 21 set at an angle downward penetrates the upper inner surface of the lower mold 4. The jet holes 21 are set at equal intervals, and the other end of the jet hole 21 penetrates the inner surface of the pressure dividing groove 19.

[0047] Before stamping, the upper die 5 moves downward, and the top plate 3 contacts and presses down the first piston rod 18. The first piston rod 18 slides downward inside the first piston cylinder 17. The first piston cylinder 17 and the second piston cylinder 16 are connected. The second piston rod 15 is slidably and frictionally connected to the second piston cylinder 16. The movement of the first piston rod 18 is transmitted through the first piston cylinder 17 and the second piston cylinder 16, pushing the second piston rod 15 to move. The second piston rod 15 drives the piston plate 14 to slide inside the pressure chamber 11, compressing the pressure chamber 11. The air inside generates high-pressure gas. The high-pressure gas in the pressurizing chamber 11 enters the pressure dividing chamber 12 and the pressure dividing groove 19 through the connecting groove 20. The bottom spray hole 13 at the upper end of the pressure dividing chamber 12 corresponds to the cavity 10. The high-pressure gas is sprayed upward from the bottom spray hole 13 to blow away the debris at the bottom of the cavity 10. The gas entering the pressure dividing groove 19 is sprayed out through the equally spaced and obliquely downward spray holes 21 to blow away the debris from the side of the cavity 10 wall and chamfer, achieving all-round cleaning and ensuring that there is no debris residue in the mold before stamping.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chamfering stamping die with a positive pressure blowing structure, comprising a base (1), wherein hydraulic rods (2) are fixedly installed on the upper surfaces of both ends of the base (1), and a top plate (3) is fixedly connected to the upper end of the hydraulic rods (2); a lower die (4) is fixedly disposed on the upper surface of the base (1), and an upper die (5) is fixedly installed on the lower surface of the top plate (3), characterized in that: The upper end of the lower mold (4) is fixedly provided with a support column (6), and the upper end of the support column (6) is mounted with a sliding limiting column (7); the inner side surface of the upper end of the lower mold (4) is penetrated by one end of a pressure relief groove (8), and the other end of the pressure relief groove (8) penetrates the upper surface of the lower mold (4); the inner side surface of the lower end of the support column (6) is penetrated by one end of a pressure hole (9), and the other end of the pressure hole (9) penetrates the outer side surface of the lower mold (4); and the upper surface of the lower mold (4) is provided with a cavity (10). The upper surface of the base (1) is provided with a pressurizing mechanism, and the purpose of cleaning the debris generated by chamfering is achieved by blowing the inside of the upper end of the lower mold (4) before stamping. The pressurizing mechanism comprises a pressurizing cavity (11) which is arranged in the inside of the lower end of the lower mold (4), and a pressure distribution cavity (12) which is arranged in the inside of the lower mold (4) above the pressurizing cavity (11), and a bottom nozzle (13) which is arranged at the upper end of the pressure distribution cavity (12); a piston plate (14) is arranged in the inside of the pressurizing cavity (11), and a second piston rod (15) is fixedly arranged on the outer surface of the middle section of the piston plate (14); a second piston cylinder (16) is fixedly arranged on the outer side surface of the lower end of the lower mold (4), and a first piston cylinder (17) is fixedly connected to the end of the second piston cylinder (16) which is away from the lower mold (4), and a first piston rod (18) is arranged on the upper end of the first piston cylinder (17); a pressure distribution groove (19) is arranged in the inside of the upper end of the lower mold (4); a communication groove (20) is arranged in the inside of the side surface of the lower mold (4) and connects the pressure distribution groove (19), the pressure distribution cavity (12) and the pressurizing cavity (11); and a gas nozzle (21) is arranged in the inner side surface of the upper end of the lower mold (4).

2. The chamfering press die with a positive pressure blowing structure according to claim 1, characterized in that: The support column (6) and the limiting column (7) are in sliding friction connection, and a spring is arranged between the support column (6) and the limiting column (7).

3. The chamfering press die with a positive pressure blowing structure according to claim 1, characterized in that: The bottom nozzle (13) and the cavity (10) are in one-to-one corresponding design, and the upper end of the bottom nozzle (13) penetrates the inner bottom surface of the cavity (10).

4. The chamfering press die with a positive pressure blowing structure according to claim 1, characterized in that: The piston plate (14) and the pressurizing cavity (11) are in sliding friction connection, and columnar sliding rods are arranged on the two ends of the piston plate (14) and penetrate the outer side surface of the lower mold (4); the columnar sliding rods on the two ends of the piston plate (14) are in sliding connection with the lower mold (4), and a spring is arranged between the columnar sliding rods on the two ends of the piston plate (14) and the lower mold (4).

5. The chamfering press die with a positive pressure blowing structure according to claim 1, characterized in that: The second piston rod (15) and the second piston cylinder (16) are in sliding friction connection, and one end of the second piston cylinder (16) is in communication with the lower end of the first piston cylinder (17).

6. The chamfering press die with a positive pressure blowing structure according to claim 1, characterized in that: The first piston cylinder (17) and the first piston rod (18) are in sliding friction connection, and the upper end of the first piston rod (18) is arranged opposite to the lower surface of the top plate (3).

7. The chamfering press die with a positive pressure blowing structure according to claim 1, characterized in that: One end of the air injection hole (21) is arranged obliquely downward, and the obliquely downward arranged end of the air injection hole (21) penetrates the inner side surface of the upper end of the lower die (4), and the air injection holes (21) are arranged at equal intervals, and the other end of the air injection hole (21) penetrates the inner side surface of the pressure distribution groove (19).

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