Sheet metal part stamping die

Abstract

The utility model discloses a sheet metal part stamping die which comprises a punch press, an upper die and a lower die, the upper die is fixedly connected with the bottom of a telescopic rod of a hydraulic oil cylinder of the punch press, the lower die is fixedly connected with the top of a workbench of the punch press, and a first containing square groove is formed in the top of the lower die. The upper die comprises a fixing plate, a punching block and a pressing block, the top of the fixing plate is fixedly connected with the bottom of a telescopic rod of a hydraulic oil cylinder of a punching machine, and the punching block is fixedly located at the bottom of the fixing plate. The transverse vertical section and the longitudinal vertical section of the pressing block are both in a concave shape, an opening of the pressing block faces downwards, a first square through hole is formed in the top of the pressing block, the upper end of the pressing block is inserted into the upper end of the punching block through the first square through hole, and an opening in the lower end of the pressing block is inserted into the lower end of the punching block. The stamping die has the advantages that a sheet metal part is limited, the stamped sheet metal part is convenient to take, the stamped sheet metal part is prevented from being taken up by the upper die, and the sheet metal part needing to be stamped is pre-fixed by the upper die.

Description

Technical Field

[0001] The utility model relates to the field of sheet metal stamping, in particular to a sheet metal stamping die. Background Art

[0002] Sheet metal stamping parts are made by placing sheet metal on a mold and then stamping the sheet metal into the shape of the mold.

[0003] At present, when performing stamping processing, the operator needs to place the cut sheet metal in the lower die, and then press down with the upper die. However, when placing the sheet metal, the sheet metal is prone to tilt or inaccurate placement. Moreover, when pressing down, it is also easy to cause the sheet metal to tilt. After pressing down, the upper die can easily lift up the stamped sheet metal, requiring the operator to take the part from the upper die. At the same time, after the upper die is lifted up, the stamped sheet metal is easy to fall during the ascent, causing the sheet metal to collide and deform. Utility Model Content

[0004] The utility model aims to provide a sheet metal stamping die, which has the advantages of limiting the position of the sheet metal, facilitating the taking of the stamped sheet metal, preventing the stamped sheet metal from being lifted up by the upper die, and pre-fixing the sheet metal to be stamped by the upper die.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A sheet metal stamping die comprises a punch press, an upper die and a lower die, wherein the upper die is fixedly connected to the bottom of a telescopic rod of a hydraulic cylinder of the punch press, and the lower die is fixedly connected to the top of a workbench of the punch press, wherein the lower die is a square block with a convex vertical section, and a first placement square groove is provided on the top of the lower die, wherein a plurality of punching holes are provided in the first placement square groove;

[0007] The upper die comprises a fixed plate, a punch block and a pressure block. The top of the fixed plate is fixedly connected to the bottom of the telescopic rod of the hydraulic cylinder of the punch press. The punch block is fixedly located at the bottom of the fixed plate. The transverse vertical section and the longitudinal vertical section of the punch block are both convex. The bottom of the punch block is provided with a punch block corresponding to a plurality of punching holes.

[0008] The transverse vertical section and the longitudinal vertical section of the pressing block are both "concave" shaped, the opening of the pressing block is downward, a first square through-hole is provided on the top of the pressing block, the upper end of the pressing block is plugged into the upper end of the punching block through the first square through-hole, the lower end opening of the pressing block is plugged into the lower end of the punching block, and the bottom of the pressing block protrudes from the bottom of the punching block;

[0009] The top array of the pressing block is provided with a plurality of first guide rods, the top of the fixing plate is provided with first circular through holes corresponding to the plurality of first guide rods, each of the first guide rods is inserted into its corresponding first circular through hole, the top of each of the first guide rods is flush with half of the thickness of the fixing plate, and each of the first guide rods is sleeved with a spring.

[0010] The preferred solutions are as follows:

[0011] Preferably, second guide rods are fixedly provided at the four corners of the top of the lower mold, second circular through holes are provided at the four corners of the top of the fixed plate, and each of the second guide rods is inserted into its corresponding second circular through hole.

[0012] Preferably: a plurality of threaded holes are formed in an array on the top of the punch block, a plurality of third circular through holes corresponding to the plurality of threaded holes are formed on the top of the fixing plate, a clearance groove is formed on the top of each of the third circular through holes, a first bolt is formed in each of the third circular through holes, a bolt head of each of the first bolts is located in its corresponding clearance groove, and each of the first bolts is threadedly connected to its corresponding threaded hole.

[0013] Preferably, a limiting block with a U-shaped cross section is fixedly provided at the bottom of the fixing plate, and the upper end of the punch block is inserted into the limiting block.

[0014] Preferably, a through groove is provided on the front side of the top of the lower mold, the through groove is connected to the first placement square groove, and a chamfer is provided on the front side of the through groove.

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The first placement square groove and the through groove of the lower die can be arranged to facilitate the positioning of the four sides of the sheet metal part, and at the same time, it is convenient for the operator to clamp the stamped sheet metal part from the chamfer of the through groove by clamping pliers;

[0017] 2. Through the arrangement of the pressing block, a plurality of first guide rods and a plurality of springs, when the upper die descends, the pressing block contacts the sheet metal first, and then the upper die continues to descend, the spring is compressed, and the punch block punches. When the punching is completed, the upper die rises, and the spring rebounds, so that the punched sheet metal is pushed out of the upper die. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0019] Figure 2 It is a front side view of the overall structural modeling schematic diagram of the upper mold and the lower mold of the embodiment;

[0020] Figure 3is a bottom view of a front side view of a schematic diagram of the overall structural shape of the upper mold and the lower mold of the embodiment;

[0021] Figure 4 It is a partial cross-sectional view of a front side view of an upper mold of an embodiment.

[0022] In the figure, 1, punch press; 2, upper die; 3, lower die; 4, fixed plate; 5, punch block; 6, pressure block; 7, punching block; 8, first guide rod; 9, spring; 10, second guide rod; 11, first bolt; 12, limit block. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] The same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings.

[0025] A sheet metal stamping die, such as Figure 1-Figure 4 As shown, it includes a punch press 1, an upper die 2, and a lower die 3. The upper die 2 is fixedly connected to the bottom of the telescopic rod of the hydraulic cylinder of the punch press 1, and the lower die 3 is fixedly connected to the top of the workbench of the punch press 1. The lower die 3 is a square block with a "convex" vertical section. The upper die 2 includes a fixed plate 4, a punch block 5, and a pressure block 6. The top of the fixed plate 4 is fixedly connected to the bottom of the telescopic rod of the hydraulic cylinder of the punch press 1.

[0026] A plurality of transverse "T"-shaped first slots are provided on the top of the worktable of the punch press 1, a plurality of transverse "T"-shaped first plug blocks are provided on the bottom of the lower die 3, a plurality of first threaded through holes are provided at the top of the steps on the left and right sides of the lower die 3 corresponding to the positions of the plurality of first plug blocks, a second bolt is threadedly connected in each of the first threaded through holes, and each of the second bolts abuts against the inner bottom wall of the corresponding first slot;

[0027] A connecting plate is also provided at the bottom of the telescopic rod of the punch press 1, and a plurality of longitudinal "T"-shaped second slots are provided at the bottom of the connecting plate. A plurality of longitudinal "T"-shaped second plug blocks are provided at the top of the fixed plate 4. The fixed plate 4 is fixed by being inserted into the second slots through the second plug blocks. A plurality of second threaded through holes are provided at the top of the connecting plate corresponding to the positions of the plurality of second plug blocks, and a third bolt is threadedly connected in each of the second threaded through holes, and each third bolt is abutted against its corresponding second plug block.

[0028] A first placing square groove is provided on the top of the lower die 3, and a plurality of punching holes are provided in the first placing square groove. The cut sheet metal plate is placed in the first placing square groove, and the sheet metal plate is limited in the first placing square groove. At the same time, a through groove is provided on the front side of the top of the lower die 3, and the through groove is connected with the first placing square groove. The front side of the through groove is provided with a chamfer. The setting of the chamfer can facilitate the operator to insert the clamps at the bottom of the sheet metal plate after the stamping is completed.

[0029] The punch block 5 is fixed at the bottom of the fixed plate 4, and the transverse vertical section and the longitudinal vertical section of the punch block 5 are both "convex". The bottom of the punch block 5 is provided with a punch block 76 corresponding to the plurality of punching hole positions, and the top array of the punch block 5 is provided with a plurality of threaded holes, and the top of the fixed plate 4 is provided with a plurality of third circular through holes corresponding to the plurality of threaded holes, and the top of each third circular through hole is provided with a clearance groove, and each third circular through hole is provided with a first bolt 11, and the bolt head of each first bolt 11 is located in its corresponding clearance groove, and each first bolt 11 is threadedly connected with its corresponding threaded hole, and the punch block 5 is fixedly connected to the bottom of the fixed plate 4 by a plurality of bolts. In order to further fix the punch block 5, a limit block 12 with a "U"-shaped cross section is fixedly provided at the bottom of the fixed plate 4, and the upper end of the punch block 5 is inserted into the limit block 12, so as to limit the upper end of the punch block 5.

[0030] The transverse vertical section and the longitudinal vertical section of the pressing block 6 are both "concave" shaped, the opening of the pressing block 6 is downward, a first square through-hole is provided on the top of the pressing block 6, the upper end of the pressing block 6 is plugged into the upper end of the punching block 5 through the first square through-hole, the lower end opening of the pressing block 6 is plugged into the lower end of the punching block 5, and the bottom of the pressing block 6 protrudes 3-4 cm from the bottom of the punching block 76;

[0031] The top array of the pressing block 6 is provided with a plurality of first guide rods 8, the top of the fixed plate 4 is provided with first circular through holes corresponding to the plurality of first guide rods 8, each first guide rod 8 is inserted into its corresponding first circular through hole, the top of each first guide rod 8 is flush with one-half of the thickness of the fixed plate 4, and each first guide rod 8 is sleeved with a spring 9.

[0032] When the upper die 2 descends, the bottom of the pressing block 6 first contacts the sheet metal plate. As the upper die 2 continues to descend, the springs 9 are continuously compressed. Subsequently, the punching block 5 completes the punching, the upper die 2 rises, and the springs 9 rebound.

[0033] Second guide rods 10 are fixedly provided at the four corners of the top of the lower die 3, and second circular through holes are provided at the four corners of the top of the fixed plate 4. Each second guide rod 10 is inserted into its corresponding second circular through hole. The four second guide rods 10 can guide the lower die 3 when it descends, preventing the upper die 2 and the lower die 3 from position deviation, which may cause damage to the die during stamping.

[0034] Specific implementation process:

[0035] Step 1: The operator places the cut sheet metal plate in the first placement square groove of the lower mold 3, and the sheet metal plate is limited in the first placement groove;

[0036] Step 2: The operator presses the start button of the punch press 1 with both hands;

[0037] Step 3: The hydraulic cylinder of the punch press 1 pushes the upper die 2 down;

[0038] The bottom of the pressing plate abuts against the top of the sheet metal plate, the hydraulic cylinder of the punch press 1 continues to push the upper die 2 down, and the punch block 5 continues to descend. At this time, a number of springs 9 are compressed, and the punch block 5 punches the sheet metal plate;

[0039] After the punching is completed, the hydraulic cylinder of the punch press 1 drives the upper die 2 to rise. At this time, a number of springs 9 rebound and push the pressing plate downward. The stamped sheet metal part is separated from the upper die 2. As the upper die 2 continues to rise, the pressing plate is finally reset.

[0040] Step 4: The operator inserts the clamp through the chamfer of the top front through slot of the lower die 3, and then picks up the sheet metal part.

[0041] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A sheet metal stamping die, comprising a punch press (1), an upper die (2), and a lower die (3), wherein the upper die (2) is fixedly connected to the bottom of a telescopic rod of a hydraulic cylinder of the punch press (1), and the lower die (3) is fixedly connected to the top of a working table of the punch press (1), characterized in that: The lower die (3) is a square block with a convex vertical cross section. A first placement square groove is provided on the top of the lower die (3), and a plurality of punching holes are provided in the first placement square groove. The upper die (2) comprises a fixed plate (4), a punch block (5), and a pressure block (6); the top of the fixed plate (4) is fixedly connected to the bottom of the telescopic rod of the hydraulic cylinder of the punch press (1); the punch block (5) is fixedly located at the bottom of the fixed plate (4); the transverse vertical section and the longitudinal vertical section of the punch block (5) are both convex; and the bottom of the punch block (5) is provided with a punch block (7) corresponding to a plurality of punching hole positions; The transverse vertical section and the longitudinal vertical section of the pressing block (6) are both "concave" shaped, the opening of the pressing block (6) is downward, a first square through-hole is provided on the top of the pressing block (6), the upper end of the pressing block (6) is plugged into the upper end of the punching block (5) through the first square through-hole, the lower end opening of the pressing block (6) is plugged into the lower end of the punching block (5), and the bottom of the pressing block (6) protrudes from the bottom of the punching block (7); The top array of the pressing block (6) is provided with a plurality of first guide rods (8), the top of the fixing plate (4) is provided with first circular through holes corresponding to the plurality of first guide rods (8), each of the first guide rods (8) is inserted into its corresponding first circular through hole, the top of each of the first guide rods (8) is flush with one-half of the thickness of the fixing plate (4), and each of the first guide rods (8) is sleeved with a spring (9).

2. A sheet metal stamping die according to claim 1, characterized in that: Second guide rods (10) are fixedly provided at the four corners of the top of the lower mold (3), second circular through holes are provided at the four corners of the top of the fixed plate (4), and each of the second guide rods (10) is inserted into its corresponding second circular through hole.

3. A sheet metal stamping die according to claim 2, characterized in that: The top array of the punch block (5) is provided with a plurality of threaded holes, the top of the fixing plate (4) is provided with a plurality of third circular through holes corresponding to the plurality of threaded holes, the top of each of the third circular through holes is provided with a clearance groove, each of the third circular through holes is provided with a first bolt (11), the bolt head of each of the first bolts (11) is located in its corresponding clearance groove, and each of the first bolts (11) is threadedly connected to its corresponding threaded hole.

4. A sheet metal stamping die according to claim 3, characterized in that: A limiting block (12) having a U-shaped cross section is fixedly provided at the bottom of the fixing plate (4), and the upper end of the punch block (5) is inserted into the limiting block (12).

5. The sheet metal stamping die according to claim 1, characterized in that: A through slot is provided on the front side of the top of the lower mold (3), the through slot is connected to the first placement square slot, and a chamfer is provided on the front side of the through slot.

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