Metal stamping die

Abstract

The invention relates to the technical field of metal stamping dies, in particular to a metal stamping die. The die comprises a lower die and an upper die, a plurality of guide rods are arranged on the lower die, a plurality of die holes are formed in the lower die, a plurality of movable blocks are arranged at the bottoms of the die holes, the bottom of each movable block is installed in the lower die through an automatic bouncing device, the top face of each movable block is flush with the inner bottom face of the corresponding die hole, and a filter and a valve block are arranged on the side of the lower die. A negative pressure connector used for being connected with negative pressure equipment and a positive pressure connector used for being connected with positive pressure equipment are installed on the valve block, an air channel is formed in the valve block, a negative pressure air valve and a positive pressure air valve are installed on the valve block, and a positive pressure air channel and a negative pressure waste discharging channel are formed in the lower die. The dual effects of positive pressure and negative pressure are designed, so that the cleaning effect is guaranteed, and simplicity and convenience are achieved; the movable block capable of automatically popping up is designed, it can be guaranteed that the internal structure of the die is complete in the die stamping process, the stamping effect cannot be affected at all, and automatic popping-up can be achieved after stamping is completed.

Description

Technical Field

[0001] The invention relates to the technical field of metal stamping dies, and in particular to a metal stamping die. Background Art

[0002] Metal stamping is a common manufacturing process that uses dies to deform or cut metal sheets to achieve mass production of parts. The stamping process has the advantages of high efficiency, high precision and low cost, and is widely used in the automotive, aviation, home appliances, electronics and other industries. In the stamping process, the mold is a key component. In actual production, traditional metal stamping dies often produce a large amount of metal debris and waste in the mold as the number of stampings increases. If they cannot be discharged in time, it will affect the subsequent stamping effect. Manual cleaning is cumbersome, time-consuming and labor-intensive. Summary of the invention

[0003] The purpose of the present invention is to provide a metal stamping die with a reasonable design to solve the defects and shortcomings of the prior art.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: it comprises a lower mold and an upper mold, the lower mold is provided with several guide rods, the lower mold is provided with several mold holes, the bottom of the mold holes is provided with several movable blocks, the bottom of each movable block is installed in the lower mold through an automatic pop-up device, the top surface of the movable block is flush with the bottom surface of the mold hole, a filter and a valve block are provided on the side of the lower mold, a negative pressure connector for connecting a negative pressure device and a positive pressure connector for connecting a positive pressure device are installed on the valve block, an airway is opened in the valve block, a negative pressure air valve and a positive pressure air valve are installed on the valve block, a positive pressure airway and a negative pressure exhaust channel are respectively opened in the lower mold, the positive pressure air valve is connected to the positive pressure airway, the negative pressure exhaust channel is connected to the filter, the air outlet of the filter is connected to the negative pressure air valve, and the negative pressure exhaust channel and the positive pressure airway are both connected to the movable hole where the movable block is located.

[0005] Preferably, the automatic pop-up device includes a sliding member connected to the bottom of the movable block, the sliding member is slidably installed in the lower mold along the vertical direction, and a spring is arranged between the movable block and the bottom surface of the hole in which the sliding member slides.

[0006] Preferably, a plurality of guide blocks are provided at the outer bottom edge of the sliding member, a plurality of guide grooves are opened on the side of the hole where the sliding member is located, the inner shape of the guide groove matches the outer shape of the guide block, and the guide blocks are slidably installed in the guide groove.

[0007] Preferably, an annular air groove is opened downward at the bottom of the movable hole where the movable block is located, and the outer diameter of the air groove is the same as the outer diameter of the movable hole.

[0008] Preferably, the negative pressure exhaust channel is arranged at a height lower than the bottom surface height of the sliding member, and a plurality of negative pressure branch pipes are connected to the negative pressure exhaust channel, and are respectively connected to the bottom side of each gas groove through the negative pressure branch pipes.

[0009] Preferably, the positive pressure airway is connected to a plurality of positive pressure branch pipes, and is connected to the side of each air tank through the positive pressure branch pipes.

[0010] Preferably, there are multiple positive-pressure branch pipes and negative-pressure branch pipes connected to each of the air grooves, and the positive-pressure branch pipes and negative-pressure branch pipes are evenly arranged along the circumference.

[0011] Preferably, a filter cavity is provided in the filter, a negative pressure exhaust channel is connected to the filter cavity, a negative pressure connecting pipe is provided at the end of the filter opposite to the filter cavity, and the negative pressure connecting pipe is connected to the negative pressure air valve; a detachable filter element is provided in the filter, a filter net is installed on the detachable filter element, a mounting plate is connected to the outer side of the detachable filter element, and a plurality of bolt holes for installation are opened on the mounting plate.

[0012] Preferably, the bottom surface of the filter cavity is flush with the bottom surface inside the detachable filter element.

[0013] Preferably, a sealing ring is provided at the opening of the hole on the outside of the sliding member, and the sealing ring is located on the outside of the sliding member.

[0014] After adopting the above structure, the beneficial effects of the present invention are: The present invention is designed with dual effects of positive pressure and negative pressure. After the stamping is completed, positive pressure is first used to blow the inside of the mold to prevent debris from adhering, and then negative pressure is used to suck out the debris, thereby ensuring the cleaning effect and being simple and convenient.

[0015] The present invention designs an automatically ejected movable block, which can ensure the integrity of the internal structure of the mold during the mold stamping process without any influence on the stamping effect. After the stamping is completed, the movable block can be automatically ejected to open the airway to facilitate the subsequent cleaning process.

[0016] The present invention designs a detachable filter, which can be easily cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall installation method of the present invention; Figure 2 It is a top view of the die hole in the present invention; Figure 3 is a partial cross-sectional view of the lower mold of the present invention; Figure 4 yes Figure 3 Enlarged view of part A in the middle; Figure 5 It is a schematic diagram of the installation method of the detachable filter element in the present invention; Figure 6 is a cross-sectional view of the filter of the present invention; Figure 7 It is the airflow connection principle diagram of the present invention.

[0018] Description of reference numerals: 1. Lower mold; 2. Upper mold; 3. Mold hole; 4. Guide rod; 5. Valve block; 6. Filter; 7. Negative pressure connector; 8. Negative pressure air valve; 9. Movable block; 10. Negative pressure exhaust channel; 11. Positive pressure air channel; 12. Positive pressure connector; 13. Sliding part; 14. Guide groove; 15. Guide block; 16. Spring; 17. Air groove; 18. Filter chamber; 19. Removable filter element; 20. Filter screen; 21. Positive pressure air valve; 22. Negative pressure connecting pipe; 23. Mounting plate; 24. Bolt hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 7 As shown, it comprises a lower mold 1 and an upper mold 2, the lower mold 1 is provided with several guide rods 4, the lower mold 1 is provided with several mold holes 3, the bottom of the mold hole 3 is provided with several movable blocks 9, the bottom of each movable block 9 is installed in the lower mold 1 through an automatic pop-up device, the top surface of the movable block 9 is flush with the bottom surface of the mold hole 3, a filter 6 and a valve block 5 are provided on the side of the lower mold 1, a negative pressure connector 7 for connecting a negative pressure device and a positive pressure connector 12 for connecting a positive pressure device are installed on the valve block 5, an airway is opened in the valve block 5, a negative pressure air valve 8 and a positive pressure air valve 21 are installed on the valve block 5, a positive pressure airway 11 and a negative pressure exhaust channel 10 are respectively opened in the lower mold 1, the positive pressure air valve 21 is connected to the positive pressure airway 11, the negative pressure exhaust channel 10 is connected to the filter 6, the air outlet of the filter 6 is connected to the negative pressure air valve 8, and the negative pressure exhaust channel 10 and the positive pressure airway 11 are both connected to the movable hole where the movable block 9 is located; The automatic pop-up device includes a sliding member 13 connected to the bottom of the movable block 9, the sliding member 13 is slidably installed in the lower mold 1 along the vertical direction, and a spring 16 is arranged between the movable block 9 and the bottom surface of the hole where the sliding member 13 slides, and a sealing ring is arranged at the hole mouth outside the sliding member 13, and the sealing ring is located outside the sliding member 13; Several guide blocks 15 are provided at the outer bottom edge of the sliding member 13, and several guide grooves 14 are provided on the side of the hole where the sliding member 13 is located. The inner shape of the guide groove 14 matches the outer shape of the guide block 15, and the guide blocks 15 are all slidably installed in the guide groove 14; The bottom of the movable hole where the movable block 9 is located is provided with an annular air groove 17 downwardly, and the outer diameter of the air groove 17 is the same as the outer diameter of the movable hole; The height of the negative pressure exhaust channel 10 is lower than the bottom height of the sliding member 13. The negative pressure exhaust channel 10 is connected to a plurality of negative pressure branch pipes, and is connected to the bottom side of each gas groove 17 through the negative pressure branch pipes. The positive pressure airway 11 is connected to a plurality of positive pressure branches, and is connected to the side of each air tank 17 through the positive pressure branches; There are multiple positive pressure branch pipes and negative pressure branch pipes connected to each gas groove 17, and the positive pressure branch pipes and negative pressure branch pipes are evenly arranged along the circumference; A filter chamber 18 is provided in the filter 6, and the negative pressure exhaust channel 10 is connected to the filter chamber 18. A negative pressure connecting pipe 22 is provided at one end of the filter 6 opposite to the filter chamber 18, and the negative pressure connecting pipe 22 is connected to the negative pressure air valve 8; a detachable filter element 19 is provided in the filter 6, and a filter screen 20 is installed on the detachable filter element 19. A mounting plate 23 is connected to the outer side of the detachable filter element 19, and a plurality of bolt holes 24 for mounting are opened on the mounting plate 23; The bottom surface of the filter cavity 18 is flush with the bottom surface of the removable filter element 19 .

[0021] The working principle and use process of the present invention: The mold is installed and used, and the positive pressure device and the negative pressure device are connected. The positive pressure valve 21 and the negative pressure valve 8 are closed. During stamping, the upper mold 2 will apply pressure to the stamping part and the movable block 9, so that the movable block 9 retracts downward and the spring 16 is compressed. When the stamping is completed, the upper mold 2 leaves, the stamping part is taken out, and some metal debris will remain in the lower mold 1. The movable block 9 loses pressure and is lifted up by the spring 16. The movable block 9 and the sliding part 13 slide upward together, and the guide block 15 slides upward in the guide groove 14 at the same time, guiding it while preventing it from moving upward excessively to achieve limiting. After the movable block 9 moves upward, its bottom surface is higher than the bottom surface of the die hole 3, forming a gap, and then the movable block 9 is started. The positive pressure valve 21 is opened, and the high pressure gas flows through the positive pressure valve 21 and enters the positive pressure branch pipe from the positive pressure airway 11, and then sprays out from the air groove 17, and then sprays out from the gap below the movable block 9, blowing away the debris remaining on the ground of the mold hole 3 to prevent it from sticking, and then the positive pressure valve 21 is closed, and the negative pressure valve 8 is opened to create negative pressure. The negative pressure sucks the airflow from the gap below the movable block 9, thereby sucking in the debris. Due to the dual effects of the airflow and gravity, the debris falls downward into the air groove 17, and then is sucked downward from the negative pressure exhaust channel 10 into the filter chamber 18, and then is blocked when passing through the filter screen 20, and the airflow is sucked backward from the negative pressure connecting pipe 22, and then the residual debris is cleaned; After using for a period of time, the lower mold 1 and the filter 6 can be tilted as a whole to allow debris to fall into the removable filter element 19, the bolts in the bolt holes 24 can be removed, and the removable filter element 19 and the filter screen 20 can be taken out for cleaning, and the cleaning can be completed; If no debris remains during the stamping process in certain batches of stamping, the positive pressure air valve 21 can be closed and the negative pressure air valve 8 can be opened while the upper mold 2 is pressed downward, so that negative pressure is formed in both the negative pressure exhaust channel 10 and the positive pressure air channel 11, and the negative pressure is used to absorb the movable block 9. Therefore, after the stamping is completed, the movable block 9 will not be ejected, and continuous stamping operations can be performed.

[0022] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A metal stamping die, comprising a lower die (1) and an upper die (2), characterized in that: A plurality of guide rods (4) are arranged on the lower mold (1), a plurality of mold holes (3) are opened in the lower mold (1), a plurality of movable blocks (9) are arranged at the bottom of the mold holes (3), the bottom of each movable block (9) is installed in the lower mold (1) by an automatic pop-up device, the top surface of the movable block (9) is flush with the bottom surface of the mold hole (3), a filter (6) and a valve block (5) are arranged on the side of the lower mold (1), and a negative pressure connector (7) for connecting to a negative pressure device and a positive pressure connector (10) for connecting to a positive pressure device are installed on the valve block (5). 2), an air passage is opened in the valve block (5), a negative pressure air valve (8) and a positive pressure air valve (21) are installed on the valve block (5), a positive pressure air passage (11) and a negative pressure exhaust passage (10) are opened in the lower mold (1), the positive pressure air valve (21) is connected to the positive pressure air passage (11), the negative pressure exhaust passage (10) is connected to the filter (6), the air outlet of the filter (6) is connected to the negative pressure air valve (8), and the negative pressure exhaust passage (10) and the positive pressure air passage (11) are both connected to the movable hole where the movable block (9) is located.

2. A metal stamping die according to claim 1, characterized in that: The automatic pop-up device comprises a sliding member (13) connected to the bottom of the movable block (9); the sliding member (13) is slidably installed in the lower mold (1) along a vertical direction, and a spring (16) is provided between the movable block (9) and the bottom surface of the hole in which the sliding member (13) slides.

3. A metal stamping die according to claim 2, characterized in that: A plurality of guide blocks (15) are provided at the outer bottom edge of the sliding member (13), and a plurality of guide grooves (14) are provided on the side of the hole where the sliding member (13) is located. The internal shape of the guide groove (14) matches the external shape of the guide block (15), and the guide blocks (15) are slidably installed in the guide groove (14).

4. A metal stamping die according to claim 3, characterized in that: The bottom of the movable hole where the movable block (9) is located is provided with an annular air groove (17) extending downwards, and the outer diameter of the air groove (17) is the same as the outer diameter of the movable hole.

5. A metal stamping die according to claim 4, characterized in that: The negative pressure exhaust channel (10) is arranged at a height lower than the bottom surface height of the sliding member (13), and a plurality of negative pressure branch pipes are connected to the negative pressure exhaust channel (10), and are respectively connected to the bottom side of each gas groove (17) through the negative pressure branch pipes.

6. A metal stamping die according to claim 5, characterized in that: The positive pressure airway (11) is connected to a plurality of positive pressure branch pipes, and is connected to the side of each air tank (17) through the positive pressure branch pipes.

7. A metal stamping die according to claim 6, characterized in that: There are multiple positive-pressure branch pipes and negative-pressure branch pipes connected to each of the air grooves (17), and the positive-pressure branch pipes and negative-pressure branch pipes are evenly arranged along the circumference.

8. A metal stamping die according to claim 7, characterized in that: A filter chamber (18) is provided in the filter (6), a negative pressure exhaust passage (10) is connected to the filter chamber (18), a negative pressure connecting pipe (22) is provided at one end of the filter (6) opposite to the filter chamber (18), and the negative pressure connecting pipe (22) is connected to the negative pressure air valve (8); a detachable filter element (19) is provided in the filter (6), a filter screen (20) is installed on the detachable filter element (19), a mounting plate (23) is connected to the outside of the detachable filter element (19), and a plurality of bolt holes (24) for mounting are opened on the mounting plate (23).

9. A metal stamping die according to claim 8, characterized in that: The bottom surface of the filter cavity (18) is flush with the bottom surface of the detachable filter element (19).

10. A metal stamping die according to claim 9, characterized in that: A sealing ring is provided at the opening of the hole on the outside of the sliding member (13), and the sealing ring is located on the outside of the sliding member (13).

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