A CNC stamping die
By introducing compression and communication mechanisms into the stamping mold, using air pressure and coolant to clean parts and iron filings, the problem of parts impulse and iron filings during the punching process is solved, and the punching quality is improved.
Patent Information
- Application Number
- CN202111295957.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-11-03
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2041-11-03
AI Technical Summary
During the punching process of stamping mold, the parts under punching are prone to rush into the inside of the punch, and the iron filings adhere to each other due to heat and friction, which affects the punching quality.
A CNC stamping die is designed, using a compression mechanism and a communication mechanism, which introduces air and coolant into the punch through a one-way air outlet valve and coolant pipe. The air pressure rises to extrude the parts and cleans up the attached iron filings, while the lower die is at the same time. The base is equipped with a sponge water absorbing layer to absorb the coolant.
It effectively avoids parts rushing into the punch, improves the punching quality, cleans up the iron filings in the punching, and ensures the continuity and quality of the punching process.
Smart Images
Figure CN114160660B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of molds, and in particular relates to a numerical control stamping mold. Background Art
[0002] Stamping dies are special process equipment used to process metal or non-metal materials into parts or semi-finished products in cold stamping. They are called cold stamping dies, commonly known as cold stamping dies. Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform it, thereby obtaining the required parts.
[0003] In the prior art, when punching a sheet, due to the hollow structure inside the punch, the punched parts will be punched into the punch, affecting the next punching effect. In addition, due to the heat generated during the punching process and the friction between the punch and the sheet, the punch will heat up, causing iron filings to adhere to the punch, affecting the punching quality.
[0004] In view of this, a CNC stamping die is proposed to solve the above problems. Summary of the invention
[0005] The technical problem to be solved by the present invention is: the CNC stamping die provided by the present invention mainly solves the problem that when the stamping die is punching, the punched parts are punched into the inside of the punch and the heat generated by the punching will absorb iron filings and affect the punching effect.
[0006] To achieve the above object, the present invention provides the following technical solutions:
[0007] The present invention provides a CNC stamping die, comprising an upper die seat, a fixed plate, a compression mechanism, a connecting mechanism, a punch, a blank holder and a lower die seat, wherein the lower surface of the upper die seat is connected to the upper surface of the fixed plate, a compression mechanism is arranged below the fixed plate, one side of the compression mechanism is fixedly connected to the connecting mechanism, the other side of the connecting mechanism is connected to the inside of the punch, and the outer surface of the punch is slidably connected to the blank holder;
[0008] The compression mechanism comprises a guide column, a T-shaped guide sleeve, a spring, a sleeve, a one-way air inlet valve and a one-way air outlet valve, the upper end surface of the guide column is fixedly connected to the lower surface of the fixed plate, the outer surface of the guide column is slidably connected to the T-shaped guide sleeve, the upper end surface of the T-shaped guide sleeve is fixedly connected to the spring, the other side of the spring is fixedly connected to the lower surface of the fixed plate and the spring is wound around the outer surface of the guide column, the upper end of the sleeve is fixedly connected to the lower surface of the fixed plate and the sleeve is slidably and sealingly connected to the T-shaped guide sleeve, a one-way air outlet valve is arranged in the wall thickness of the sleeve close to the punch, and the one-way air outlet valve is connected to the connecting mechanism;
[0009] The connecting mechanism includes an air inlet pipe, a three-way valve, a rubber hose, an air outlet pipe and a coolant pipe. One side of the air inlet pipe is connected to the sleeve and is fixedly and sealedly connected to the one-way air outlet valve, the other side of the air inlet pipe is fixedly connected to one end of the three-way valve, the other end of the three-way valve is fixedly connected to one side of the rubber hose, the other side of the rubber hose is fixedly connected to the air outlet pipe, the air outlet pipe is connected to the punch, and the remaining end of the three-way valve is fixedly connected to the coolant pipe.
[0010] Preferably, a one-way air inlet valve is arranged in the wall thickness of one side of the sleeve away from the punch, and a one-way air outlet valve is arranged in the wall thickness of the other side, and the one-way air outlet valve is connected to the connecting mechanism.
[0011] Preferably, a sealing ring is fixedly connected to the outer side of the air outlet pipe, and the sealing ring is fixedly connected to the outer surface of the punch.
[0012] Preferably, a conveyor belt is provided in the lower mold base, and a sponge water-absorbing layer is provided on the surface of the conveyor belt.
[0013] Preferably, the sponge water-absorbing layer on the surface of the conveyor belt is in a wavy pattern.
[0014] Preferably, the distance between the lower part of the right side pulley of the conveyor belt and the lower mold base is less than the thickness of the sponge water absorption layer.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. By setting up a compression mechanism and a connecting mechanism, when blanking begins, the T-type guide sleeve moves upward to compress the spring to play a buffering role, and at the same time, the air in the sleeve is squeezed into the punch through the one-way air outlet valve, so that the air pressure in the punch rises, and the parts that have entered the punch are squeezed out of the punch and fall into the lower die seat, thereby improving the blanking quality;
[0017] 2. At the same time, as the punching is carried out, the coolant is continuously input into the punch through the coolant pipe, which can better punch out the parts in the punch, cool the punch and clean the iron filings attached to the punch, further improving the punching quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a cross-sectional view of the present invention;
[0019] Figure 2 For the present invention Figure 1 A local enlarged schematic diagram of the middle A;
[0020] Figure 3 For the present invention Figure 1 A partial enlarged schematic diagram of point B in the middle;
[0021] Figure 4 For the present invention Figure 1A partial enlarged schematic diagram of point C in the middle.
[0022] In the figure: upper die base 1, fixed plate 2, compression mechanism 3, guide column 31, T-shaped guide sleeve 32, spring 33, sleeve 34, one-way air outlet valve 35, connecting mechanism 4, air inlet pipe 41, three-way valve 42, rubber hose 43, air outlet pipe 44, coolant pipe 45, punch 5, pressure ring 6, lower die base 7, conveyor belt 71, sponge water absorption layer 72, one-way air inlet valve 8, sealing ring 9. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0024] See also Figures 1 to 4 In an embodiment of the present invention, a CNC stamping die comprises an upper die base 1, a fixed plate 2, a compression mechanism 3, a connecting mechanism 4, a punch 5, a blank holder 6 and a lower die base 7. The lower surface of the upper die base 1 is connected to the upper surface of the fixed plate 2. The compression mechanism 3 is arranged below the fixed plate 2. The connecting mechanism 4 is fixedly connected to one side of the compression mechanism 3. The other side of the connecting mechanism 4 is connected to the inside of the punch 5. The outer surface of the punch 5 is slidably connected to the blank holder 6.
[0025] The compression mechanism 3 includes a guide column 31, a T-shaped guide sleeve 32, a spring 33, a sleeve 34 and a one-way air outlet valve 35. The upper end surface of the guide column 31 is fixedly connected to the lower surface of the fixed plate 2, and the outer surface of the guide column 31 is slidably connected to the T-shaped guide sleeve 32. The upper end surface of the T-shaped guide sleeve 32 is fixedly connected to the spring 33. The other side of the spring 33 is fixedly connected to the lower surface of the fixed plate 2 and the spring 33 is wound around the outer surface of the guide column 31. The upper end of the sleeve 34 is fixedly connected to the lower surface of the fixed plate 2 and the sleeve 34 is slidably and sealingly connected to the T-shaped guide sleeve 32. A one-way air outlet valve 35 is arranged in the wall thickness of the sleeve 34 close to the punch 5. The one-way air outlet valve 35 is connected to the connecting mechanism 4.
[0026] The connecting mechanism 4 includes an air inlet pipe 41, a three-way valve 42, a rubber hose 43, an air outlet pipe 44 and a coolant pipe 45. One side of the air inlet pipe 41 is connected to the sleeve 34 and is fixedly and sealedly connected to the one-way air outlet valve 35, the other side of the air inlet pipe 41 is fixedly and sealedly connected to one end of the three-way valve 42, the other end of the three-way valve 42 is fixedly and sealedly connected to one side of the rubber hose 43, the other side of the rubber hose 43 is fixedly and sealedly connected to the air outlet pipe 44, the air outlet pipe 44 is connected to the punch 5, and the remaining end of the three-way valve 42 is fixedly and sealedly connected to the coolant pipe 45.
[0027] When blanking begins, the upper die seat 1 moves downward as a whole. As the punch 5 contacts the sheet, the guide column 31 and the sleeve 34 slide downward along the T-sleeve 32, so that the T-sleeve 32 compresses the spring 33 in the sleeve 34 to play a buffering role. At the same time, the air in the sleeve 34 is squeezed by the T-sleeve 32 and enters the air inlet pipe 41 of the connecting mechanism 4 through the one-way air outlet valve 35, and then enters the punch 5 through the three-way valve 42, the rubber hose 43 and the air outlet pipe 44. The connecting mechanism 4 plays a role in conveying the air in the compression mechanism 3 to the punch 5, so that the air in the punch 5 is compressed and the air pressure increases, thereby squeezing out the parts that have entered the punch 5, thereby increasing the blanking quality.
[0028] While punching, coolant is continuously input through the coolant pipe 45, and enters the punch 5 through the three-way valve 42, the rubber hose 43 and the air outlet pipe 44, further making the parts punched into the punch 5 separate from the punch 5, while playing the role of cooling the punch 5 and cleaning the iron filings attached to the punch 5, further improving the punching quality.
[0029] As an implementation mode of the present invention, a one-way air intake valve 8 is provided in the wall thickness of the sleeve 34 on the side away from the punch 5 .
[0030] After the air in the sleeve 34 is squeezed by the T-shaped guide sleeve 32 and enters the air inlet pipe 41 through the one-way air outlet valve 35, when the guide column 31 moves upward and resets, an air pressure difference will be generated in the sleeve 34. To avoid this problem, a one-way air intake valve 8 is provided in the wall thickness of the sleeve 34 away from the punch. Outside air can enter the sleeve 34 when the guide column 31 moves upward and resets, thereby balancing the air pressure difference.
[0031] As an implementation mode of the present invention, a sealing ring 9 is fixedly connected to the outer side of the air outlet pipe 44 , and the sealing ring 9 is fixedly connected to the outer surface of the punch 5 .
[0032] Because when the coolant and the compressed air enter the punch 5 through the connecting mechanism 4, leakage may occur at the connection between the connecting mechanism 4 and the wall thickness of the punch 5, the sealing ring 9 is provided to ensure the sealing and prevent the leakage.
[0033] As an embodiment of the present invention, a conveyor belt 71 is disposed in the lower mold base 7 , and a sponge water-absorbing layer 72 is disposed on the surface of the conveyor belt 71 .
[0034] After the part is punched out of the punch 5, it falls onto the conveyor belt 71 through the blanking hole on the lower die base. At the same time, since the coolant will fall onto the conveyor belt 71 through the blanking hole along with the part, a sponge absorbent layer 72 is provided to absorb the falling coolant to prevent the coolant from accumulating on the conveyor belt 71.
[0035] As an embodiment of the present invention, the sponge water-absorbing layer 72 on the surface of the conveyor belt 71 is in a wavy pattern.
[0036] By designing the sponge water-absorbing layer 72 on the surface of the conveyor belt 71 into a wavy pattern, the surface area of the sponge water-absorbing layer 72 is enlarged, so that the sponge water-absorbing layer 72 can absorb the coolant more efficiently.
[0037] As an embodiment of the present invention, the distance between the lower side of the right pulley of the conveyor belt 71 and the lower mold base is less than the thickness of the water absorbing layer 72 .
[0038] Because if the conveyor belt 71 rotates normally, the sponge water-absorbing layer 72 will continuously absorb the coolant and will reach a limit. It will then be difficult to absorb the coolant, causing the coolant to accumulate. Therefore, the distance between the bottom of the right side pulley of the conveyor belt 71 and the lower mold base is designed to be smaller than the thickness of the water-absorbing layer 72. When the conveyor belt 71 rotates to this position, the sponge water-absorbing layer 72 will be squeezed, so that the coolant in the sponge water-absorbing layer 72 will be squeezed out of the sponge water-absorbing layer 72, thereby increasing the absorption efficiency of the sponge water-absorbing layer 72.
[0039] Working principle: When blanking begins, the upper die seat 1 moves downward as a whole. As the punch 5 contacts the plate, the guide column 31 and the sleeve 34 slide downward along the T-sleeve 32, so that the T-sleeve 32 compresses the spring 33 in the sleeve 34 to play a buffering role. At the same time, the air in the sleeve 34 is squeezed by the T-sleeve 32 and enters the air inlet pipe 41 of the connecting mechanism 4 through the one-way air outlet valve 35, and then enters the punch 5 through the three-way valve 42, the rubber hose 43 and the air outlet pipe 44. The connecting mechanism 4 plays the role of conveying the air in the compression mechanism 3 to the punch 5, so that the air in the punch 5 is compressed and the air pressure increases, thereby squeezing out the parts that have entered the punch 5, thereby increasing the blanking quality;
[0040] While blanking, the coolant is continuously input through the coolant pipe 45, and enters the punch 5 through the three-way valve 42, the rubber hose 43 and the air outlet pipe 44, further making the parts punched into the punch 5 separate from the punch 5, while playing the role of cooling the punch 5 and cleaning the iron filings attached to the punch 5, further improving the blanking quality;
[0041] After the part is punched out of the punch 5 , it falls onto the conveyor belt 71 through the blanking hole on the lower die base, and the coolant is absorbed by the sponge water absorption layer 72 . The part rotates with the conveyor belt 71 and leaves the lower die base 7 .
[0042] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as the combination of these technical features does not exist, the above-mentioned embodiments only express several implementation methods of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.
Claims
1. A CNC stamping die, characterized in that: The invention comprises an upper die seat (1), a fixed plate (2), a compression mechanism (3), a connecting mechanism (4), a punch (5), a pressure ring (6) and a lower die seat (7); the lower surface of the upper die seat (1) is connected to the upper surface of the fixed plate (2); a compression mechanism (3) is arranged below the fixed plate (2); one side of the compression mechanism (3) is fixedly connected to the connecting mechanism (4); the other side of the connecting mechanism (4) is connected to the inside of the punch (5); the outer surface of the punch (5) is slidably connected to the pressure ring (6); The compression mechanism (3) comprises a guide column (31), a T-shaped guide sleeve (32), a spring (33), a sleeve (34) and a one-way air outlet valve (35), wherein the upper end surface of the guide column (31) is fixedly connected to the lower surface of the fixed plate (2), the outer surface of the guide column (31) is slidably connected to the T-shaped guide sleeve (32), the upper end surface of the T-shaped guide sleeve (32) is fixedly connected to the spring (33), the other side of the spring (33) is fixedly connected to the lower surface of the fixed plate (2), and the spring (33) is wound around the outer surface of the guide column (31). The upper end of the sleeve (34) is fixedly connected to the lower surface of the fixed plate (2), and the sleeve (34) is slidably and sealingly connected to the T-shaped guide sleeve (32). A one-way air outlet valve (35) is arranged in the wall thickness of the sleeve (34) on the side close to the punch (5), and the one-way air outlet valve (35) is connected to the connecting mechanism (4); the connecting mechanism (4) comprises an air inlet pipe (41), a three-way valve (42), a rubber hose (43), an air outlet pipe (44) and a coolant pipe (45), and the air inlet pipe ( One side of the inlet pipe (41) is connected to the sleeve (34) and is fixedly and sealedly connected to the one-way air outlet valve (35), the other side of the air inlet pipe (41) is fixedly and sealedly connected to one end of the three-way valve (42), the other end of the three-way valve (42) is fixedly and sealedly connected to one side of the rubber hose (43), the other side of the rubber hose (43) is fixedly and sealedly connected to the outlet pipe (44), the outlet pipe (44) is connected to the punch (5), and the remaining end of the three-way valve (42) is fixedly and sealedly connected to the coolant pipe (45); A one-way air intake valve (8) is provided in the wall thickness of the sleeve (34) on the side away from the punch; A sealing ring (9) is fixedly connected to the outside of the air outlet pipe (44), and the sealing ring (9) is fixedly connected to the outer surface of the punch (5).
2. A CNC stamping die according to claim 1, characterized in that: A conveyor belt (71) is arranged inside the lower die seat (7), and a sponge water-absorbing layer (72) is arranged on the surface of the conveyor belt.
3. A CNC stamping die according to claim 2, characterized in that: The sponge water-absorbing layer (72) on the surface of the conveyor belt (71) is in a wavy pattern.
4. A CNC stamping die according to claim 3, characterized in that: The distance between the lower part of the right belt pulley of the conveyor belt (71) and the lower die seat is narrower than the thickness of the water absorbing layer (72).