Die for punching sheet metal part

Abstract

The utility model discloses a stamping part punching die which comprises an upper die, a middle die and a lower die, a punch is arranged in the center of the bottom end of the upper die, a plurality of first springs are connected to the bottom end of the upper die, the middle die is connected to the bottom ends of the first springs, a through hole is formed in the middle die, and the through hole is matched with the punch. After the position of the inserting rod is relatively fixed, the pushing block moves towards the outside of the collecting groove, a second spring is compressed, waste of the sheet metal part is punched into the collecting groove from a punched hole through a punch, the upper die drives the inserting rod to move upwards, at the moment, pressure of the second spring is gradually lost, springback is generated, and the pushing block is pulled back into the collecting groove. After the pushing block makes contact with waste in the collecting groove, the waste is pushed to an outlet in the other side of the collecting groove, circulation is conducted, the problems that the waste is accumulated in the lower die, so that a punch is abraded, and the hole forming quality is affected are effectively solved, and the problem of manual cleaning is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch die technical field especially relates to die for sheet metal part punching. BACKGROUND

[0002] Sheet metal is a kind of comprehensive cold working process for metal sheet (usually below 6mm), including cutting, punching / cutting / complex, folding, welding, riveting, splicing, forming (such as automobile body) etc. Its significant feature is that the same part thickness is consistent. The product processed by sheet metal process is called sheet metal part.

[0003] The through hole on the sheet metal part needs to be processed by using punch die and stamping equipment cooperation, but the existing sheet metal part punch die is usually connected together with the punch to carry out the stamping movement in the processing use, and the contact between the punch and the sheet metal part causes the temperature of the punch to rise in the stamping process, and long-time punching operation is easy to cause the punch to wear and deform, and the metal waste after punching is usually accumulated in the lower die, and not cleaning out in time is easy to cause the punching to be blocked, affect the hole forming quality and the service life of the punch, so the sheet metal part punching die is needed to meet the needs of people. SUMMARY

[0004] The utility model discloses a punch die for sheet metal part to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: punch die for sheet metal part, including upper die, middle die and lower die, the bottom end center of upper die is provided with punch, and the bottom end of upper die is connected with a plurality of first springs, the bottom end of a plurality of first springs is connected with middle die, and the middle die is provided with a through hole, the through hole is matched with the punch, the middle die is provided with cooling water pipe, the cooling water pipe is arranged around the through hole in U type, the top end center of lower die is provided with punch hole, and the both sides of lower die are provided with collecting groove, and the collecting groove is communicated with punch hole, the push block is slidably connected in the collecting groove, and the second spring is connected between the side end of push block and lower die, the inclined slot is opened on the push block, one side of upper die is connected with plug rod, the length of plug rod is greater than the length of punch.

[0006] Preferably, the top end of the lower die is connected with a plurality of guide columns, and the upper die is slidably matched on the plurality of guide columns.

[0007] Preferably, the top end of the middle die is connected with a plurality of guide rods, and the plurality of guide rods are slidably connected in the upper die.

[0008] Preferably, the top end of the guide rod is provided with a limit pin, the outer diameter of the limit pin is greater than the outer diameter of the guide rod, and the limit pin is arranged at the upper end of the upper die.

[0009] Preferably, the middle die is composed of an upper cover and a lower cover, the cooling water pipe is arranged between the upper cover and the lower cover, and the upper cover and the lower cover are connected through a plurality of hexagonal bolts.

[0010] Preferably, a guide groove is arranged on the side end of the collecting groove, a guide block is connected to the side end of the push block, the guide block is slidingly connected in the guide groove, and the second spring is connected between the guide groove and the guide block.

[0011] Preferably, a roller is rotatably connected to the bottom end of the inserting rod.

[0012] The utility model discloses a beneficial effect is:

[0013] In the utility model, the upper die is pressed down to drive the inserting rod to be pressed down, the inserting rod cooperates with the inclined groove of the push block, the position of the inserting rod is relatively fixed, the push block moves out of the collecting groove, the second spring is compressed, the punch falls the waste of the sheet metal part from the punching hole to the collecting groove, then the upper die drives the inserting rod to move up, the pressure of the second spring is gradually lost at this time, and rebound occurs, the push block is pulled back to the collecting groove, after the push block contacts the waste in the collecting groove, the waste is pushed to the other side outlet of the collecting groove, and the waste is recycled, effectively avoiding the problems of punch wear and tear and affected hole quality caused by the accumulation of waste in the lower die, and avoiding the problem of manual cleaning.

[0014] In the utility model, the elastic connection between the middle die and the upper die enables the punch to move in the perforation of the middle die when the upper die drives the punch to complete a punching operation each time, the temperature of the perforation part is reduced through the flow of cooling water in the cooling water pipe, so that the punch realizes cooling effect in the perforation process, avoiding the problem of deformation caused by high temperature of the punch due to long-time punching operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model discloses a structure schematic diagram of the die for sheet metal part punching;

[0016] Figure 2 The utility model discloses an upper die and middle die connecting partial section structure schematic diagram of the die for sheet metal part punching;

[0017] Figure 3 The utility model discloses an explosion structure schematic diagram of the middle die of the die for sheet metal part punching;

[0018] Figure 4 The utility model discloses a front view section structure schematic diagram of the die for sheet metal part punching;

[0019] Figure 5 The utility model discloses a push block overhead section structure schematic diagram of the die for sheet metal part punching;

[0020] Figure 6The utility model provides a mould's push block internal structure schematic drawing for sheet metal part punching.

[0021] In the drawing: 1, upper die; 2, middle die; 3, lower die; 4, punch; 5, first spring; 6, through hole; 7, cooling water pipe; 8, punching; 9, collecting groove; 10, push block; 11, second spring; 12, inclined slot; 13, insertion rod; 14, guide column; 15, guide rod; 16, limit pin; 17, upper cover; 18, lower cover; 19, inner hexagonal bolt; 20, guide slot; 21, guide block; 22, roller. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Reference Figures 1-6 , sheet metal part punching mould, including upper die 1, middle die 2 and lower die 3, the bottom end center of upper die 1 is provided with punch 4, the bottom end of upper die 1 is connected with a plurality of first springs 5, middle die 2 is connected on the bottom end of a plurality of first springs 5, is set with through hole 6 on middle die 2, through hole 6 is adapted to punch 4, middle die 2 is provided with cooling water pipe 7, cooling water pipe 7 is arranged around through hole 6 in U type, the top end center of lower die 3 is set with punching 8, the both sides of lower die 3 are set with collecting groove 9, and collecting groove 9 is communicated with punching 8, and push block 10 is slidably connected in collecting groove 9, and second spring 11 is connected between the side end of push block 10 and lower die 3, and inclined slot 12 is set up on push block 10, and one side of upper die 1 is connected with insertion rod 13, and insertion rod 13 corresponds with the position of inclined slot 12, and the length of insertion rod 13 is greater than the length of punch 4.

[0024] When the upper die 1 is pressed down, the insertion rod 13 is pressed down, and the insertion rod 13 is matched with the inclined groove 12 of the push block 10, the position of the insertion rod 13 is relatively fixed, the push block 10 moves out of the collecting groove 9, the second spring 11 is compressed, the punch 4 punches the waste of the sheet metal part from the punching hole 8 into the collecting groove 9, then the upper die 1 drives the insertion rod 13 to move up, at this time, the pressure of the second spring 11 gradually loses, and the push block 10 is pulled back into the collecting groove 9, after the push block 10 contacts with the waste in the collecting groove 9, the waste is pushed to the other side outlet of the collecting groove 9, and the cycle is repeated, which effectively avoids the problems that the waste is accumulated in the lower die 3 to cause the wear of the punch 4 and the influence on the quality of the hole, and avoids the problem of manual cleaning, through the elastic connection between the middle die 2 and the upper die 1, when the upper die 1 drives the punch 4 to complete a punching operation once, the punch 4 can move in the perforation 6 of the middle die 2, the temperature of the perforation 6 is reduced through the flow of the cooling water in the cooling water pipe 7, so that the punch 4 can be cooled during the insertion process, and the problem that the temperature of the punch 4 is too high due to long-time punching operation to cause wear and deformation is avoided.

[0025] Specifically, in the embodiment, the top end of the lower die 3 is connected with a plurality of guide columns 14, and the upper die 1 is slidingly matched on the plurality of guide columns 14, so that the fitting degree of the upper die 1 and the lower die 3 in the die closing process is improved.

[0026] Specifically, in the embodiment, the top end of the middle die 2 is connected with a plurality of guide rods 15, and the plurality of guide rods 15 are slidingly connected in the upper die 1, so that the vertical movement of the middle die 2 in the die closing process is ensured, the middle die 2 is prompted to press the sheet metal part, and the stability of the punching of the sheet metal part is improved.

[0027] Specifically, in the embodiment, the top end of the guide rod 15 is provided with a limiting pin 16, the outer diameter of the limiting pin 16 is greater than the outer diameter of the guide rod 15, and the limiting pin 16 is arranged at the upper end of the upper die 1, so that the connection effect between the middle die 2 and the upper die 1 is improved, and the separation of the guide rod 15 and the upper die 1 caused by the falling of the middle die 2 is prevented.

[0028] Specifically, in the embodiment, the middle die 2 is composed of an upper cover 17 and a lower cover 18, the cooling water pipe 7 is arranged between the upper cover 17 and the lower cover 18, the upper cover 17 and the lower cover 18 are connected through a plurality of inner hexagonal bolts 19, and the arrangement of the cooling water pipe 7 is facilitated.

[0029] Specifically, in the embodiment, the side end of the collecting groove 9 is provided with a guide groove 20, the side end of the push block 10 is connected with a guide block 21, the guide block 21 is slidingly connected in the guide groove 20, and the second spring 11 is connected between the guide groove 20 and the guide block 21, so that the overall effect between the push block 10 and the lower die 3 is realized, and a supporting surface is provided for the compression and rebound of the second spring 11.

[0030] Specifically, in the embodiment, the bottom end of the inserting rod 13 is rotatably connected with a roller 22, so as to improve the smoothness of the cooperation between the inserting rod 13 and the chute 12.

[0031] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A die for punching sheet metal parts, comprising an upper die (1), a middle die (2) and a lower die (3), characterized in that: The bottom end center of the upper die (1) is provided with a punch (4), the bottom end of the upper die (1) is connected with a plurality of first springs (5), the middle die (2) is connected on the bottom end of the first spring (5), the middle die (2) is provided with a through hole (6), the through hole (6) is matched with the punch (4), the middle die (2) is provided with a cooling water pipe (7), the cooling water pipe (7) is arranged around the through hole (6) in U shape, the top end center of the lower die (3) is provided with a punch hole (8), the both sides of the lower die (3) are provided with a collecting groove (9), the collecting groove (9) is communicated with the punch hole (8), the collecting groove (9) is slidably connected with a push block (10), the side end of the push block (10) and the lower die (3) are connected with a second spring (11), the push block (10) is provided with an inclined slot (12), one side of the upper die (1) is connected with a plug rod (13), the plug rod (13) corresponds to the position of the inclined slot (12), the length of the plug rod (13) is greater than the length of the punch (4).

2. The die for punching a sheet metal member according to claim 1, characterized by: The top end of the lower die (3) is connected with a plurality of guide columns (14), the upper die (1) is slidably matched on the plurality of guide columns (14).

3. The die for punching a sheet metal member according to claim 1, characterized by: The top end of the middle die (2) is connected with a plurality of guide rods (15), the plurality of guide rods (15) are slidably connected in the upper die (1).

4. The die for punching a sheet metal member according to claim 3, characterized by: The top end of the guide rod (15) is provided with a limiting pin (16), the outer diameter of the limiting pin (16) is greater than the outer diameter of the guide rod (15), and the limiting pin (16) is arranged at the upper end of the upper die (1).

5. The die set for punching a sheet metal member according to claim 1, characterized in that: The middle die (2) is composed of an upper cover (17) and a lower cover (18), the cooling water pipe (7) is arranged between the upper cover (17) and the lower cover (18), and the upper cover (17) and the lower cover (18) are connected through a plurality of inner hexagonal bolts (19).

6. The die for punching a sheet metal member according to claim 1, characterized by: The side end of the collecting groove (9) is provided with a guide groove (20), the side end of the push block (10) is connected with a guide block (21), the guide block (21) is slidably connected in the guide groove (20), and the second spring (11) is connected between the guide groove (20) and the guide block (21).

7. The die for punching a sheet metal member according to claim 1, characterized by: The bottom end of the plug rod (13) is rotatably connected with a roller (22).

Images