Sheet metal machining stamping die

Abstract

The utility model discloses a sheet metal working stamping die which comprises a lower die base, a groove is formed in the upper surface of the lower die base, a lower die plate is arranged in the middle of the bottom wall of the groove, positioning clamping plates are connected into the groove in a sliding mode, an upper die base is vertically connected to the upper side of the lower die base in a sliding mode, and an upper die plate is arranged in the middle of the lower surface of the upper die base. The outer edge of the lower surface of the upper die base is slidably connected with an elastic limiting lower pressing plate in the vertical direction. According to the stamping die for sheet metal machining, in the stamping process, the positioning clamping plate is driven by movement of the upper die base to move by a certain distance and reset, compared with a die fixed by the positioning clamping plate in the stamping process, it is guaranteed that the positioning clamping plate is tightly attached to a sheet metal part, and meanwhile the positioning clamping plate can be fixed by a certain distance; sufficient space is provided for feeding and discharging of sheet metal parts, feeding and discharging of the sheet metal machining stamping die are more convenient, and the sheet metal machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, specifically to a sheet metal processing stamping die. Background Technology

[0002] Sheet metal processing refers to a series of processing steps performed on sheet metal, mainly including cutting, blanking, bending, and forming methods and process parameters. These processes involve various cold stamping die structures and process parameters, as well as the working principles and operating methods of various equipment. The main steps of sheet metal processing include shearing, bending and hemming, bending and forming, welding, and riveting. Among these, the bending and forming process requires the use of stamping dies to shape the sheet metal parts into a specific form. In the existing technology, the authorized publication number CN 213317077... U proposes a stamping die for sheet metal parts processing, including a base and a lifting plate. The base is provided with an "n"-shaped frame, and the lifting plate is installed below the horizontal section of the frame via several hydraulic telescopic rods. The bottom surface of the lifting plate is provided with a replaceable punch. The base is provided with a clamping mechanism for fixing the sheet metal parts, and the base is also provided with a push plate for pushing the sheet metal parts away from the clamping mechanism. The positioning clamp restricts the position of the sheet metal parts, making the position of the sheet metal parts more accurate during the stamping process. However, in order to ensure the accuracy of positioning, the positioning clamp needs to be tightly fitted to the sheet metal parts, which makes it very inconvenient during the loading and unloading of sheet metal parts, requiring frequent adjustment of the position of the positioning clamp, thus affecting processing efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a sheet metal stamping die. During the stamping process, the upper die base is used to drive the positioning clamping plate to move a certain distance and reset. Compared with the die with the positioning clamping plate fixed during the stamping process, this method ensures that the positioning clamping plate fits tightly with the sheet metal part while providing sufficient space for loading and unloading the sheet metal part. This makes loading and unloading of the sheet metal stamping die more convenient, improves the sheet metal processing efficiency, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sheet metal stamping die, including a lower die base, a groove on the upper surface of the lower die base, a lower template in the middle of the bottom wall of the groove, positioning clamps slidably connected inside the groove, an upper die base vertically slidably connected to the upper side of the lower die base, an upper template in the middle of the lower surface of the upper die base, and a lower pressure plate with elastic limit vertically slidably connected to the outer edge of the lower surface of the upper die base, and also including a clamping mechanism;

[0005] The clamping mechanism includes a hollow plate, a sliding frame, an inclined groove, a longitudinal column, and a transverse column. The hollow plates are slidably connected to the inside of the groove. There are four hollow plates distributed around the lower template. Each hollow plate has a vertically slidably connected sliding frame inside. Each sliding frame has an inclined groove inside. A longitudinal column is slidably connected between three inclined grooves of the same sliding frame. A transverse column is provided on the outer arc surface of each longitudinal column. The positioning clamping plate is respectively set between the two transverse column ends of the same longitudinal column. During the stamping process, the movement of the upper die base drives the positioning clamping plate to move a certain distance and reset. Compared with the mold where the positioning clamping plate is fixed during the stamping process, this mechanism ensures that the positioning clamping plate fits tightly with the sheet metal part while providing sufficient space for loading and unloading the sheet metal part, making the loading and unloading of the sheet metal stamping mold more convenient and improving the sheet metal processing efficiency.

[0006] Furthermore, the clamping mechanism also includes springs, which are respectively disposed between the limiting plate and the hollow plate at the end of the transverse column. The springs are movably sleeved on the outer arc surface of the transverse column to provide power for the resetting of the positioning clamp.

[0007] Furthermore, the clamping mechanism also includes a pressure plate and protruding posts. The pressure plate is disposed on the upper outer side of the lower pressure plate, and the protruding posts are respectively disposed on the upper surface of the sliding frame. The upper ends of the protruding posts all pass through the clearance holes on the surface of the hollow plate, and the downward movement of the lower pressure plate provides power for the movement of the sliding frame.

[0008] Furthermore, each hollow plate has an adjusting screw rotatably connected to its lower end. The adjusting screw is threadedly connected to a screw hole on the surface of the lower mold base to adjust the position of the hollow plate to accommodate sheet metal parts of different sizes.

[0009] Furthermore, guide posts are provided between the outer side of the lower template and the inner wall of the groove, and the guide posts are horizontally slidably connected to the guide holes at the lower end of the hollow plate to provide guiding support for the movement of the hollow plate.

[0010] Furthermore, the hollow plate is provided with a scale plate on the side away from the lower mold plate. The scale plate is slidably connected in the sliding hole on the surface of the lower mold base to determine the moving distance of the hollow plate.

[0011] Furthermore, a telescopic rod is provided between the lower surface of the upper mold base and the upper surface of the lower pressure plate, and a top pressure spring is provided between the upper surface of the telescopic column of the telescopic rod and the top wall of the telescopic cylinder of the telescopic rod to provide elastic limit for the lower pressure plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This sheet metal processing stamping die has the following advantages:

[0013] During the stamping process, the upper die base is used to drive the positioning clamping plate to move a certain distance and reset. Compared with the die with the positioning clamping plate fixed during the stamping process, this method ensures that the positioning clamping plate fits tightly with the sheet metal part while providing sufficient space for loading and unloading the sheet metal part. This makes loading and unloading of sheet metal stamping dies more convenient and improves sheet metal processing efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural schematic diagram of the overall device of this utility model, viewed from the front and in cross-section.

[0016] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0017] Figure 4 This is an enlarged structural diagram of point A in this utility model.

[0018] In the diagram: 1 Lower mold base, 2 Groove, 3 Lower template, 4 Positioning clamp, 5 Upper mold base, 6 Upper template, 7 Tightening mechanism, 71 Hollow plate, 72 Sliding frame, 73 Inclined groove, 74 Longitudinal column, 75 Transverse column, 76 Spring, 77 Pressure plate, 78 Protruding column, 8 Adjusting screw, 9 Guide column, 10 Scale plate, 11 Lower pressure plate, 12 Telescopic rod, 13 Top pressure spring. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4This embodiment provides a technical solution: a sheet metal stamping die, including a lower die base 1. The upper surface of the lower die base 1 has a groove 2 to provide space for the stamping component. A lower template 3 is located in the center of the bottom wall of the groove 2. Positioning clamping plates 4 are slidably connected inside the groove 2. An upper die base 5 is vertically slidably connected to the upper side of the lower die base 1. Guide sliding pillars at the four corners of the lower surface of the upper die base 5 are vertically slidably connected to guide sliding grooves at the four corners of the upper surface of the lower die base 1. An upper template 6 is located in the center of the lower surface of the upper die base 5. During sheet metal processing, the sheet metal part is placed on the upper surface of the lower template 3. After the material is placed, an external driving component moves the upper die base 5 downwards. The lower template 3 and the upper template 6 cooperate to press the sheet metal part. For stamping, a lower pressure plate 11 with elastic limit is vertically slidably connected to the lower outer edge of the lower surface of the upper die base 5. A telescopic rod 12 is provided between the lower surface of the upper die base 5 and the upper surface of the lower pressure plate 11. A top pressure spring 13 is provided between the upper surface of the telescopic column of the telescopic rod 12 and the top wall of the telescopic cylinder of the telescopic rod 12. During the downward movement of the upper die base 5, after the lower pressure plate 11 contacts the upper surface of the sheet metal part, it is blocked by the sheet metal part and the lower pressure plate 11 cannot continue to move downward. As the upper die base 5 continues to move downward, it will overcome the elastic force of the top pressure spring 13 and cause the telescopic rod 12 to extend and retract. Under the action of the elastic force of the top pressure spring 13, the lower pressure plate 11 presses the sheet metal part on the upper surface of the lower die plate 3. It also includes a clamping mechanism 7.

[0021] The clamping mechanism 7 includes a hollow plate 71, a sliding frame 72, an inclined groove 73, a longitudinal column 74, and a transverse column 75. The hollow plates 71 are slidably connected to the interior of the groove 2. There are four hollow plates 71 distributed around the lower template 3. Each hollow plate 71 has a vertically slidably connected sliding frame 72 inside. Each sliding frame 72 has an inclined groove 73 inside. A longitudinal column 74 is slidably connected between the three inclined grooves 73 of the same sliding frame 72. A transverse column 75 is provided on the outer arc surface of each longitudinal column 74. Positioning clamps 4 are respectively positioned between the ends of the two transverse columns 75 of the same longitudinal column 74. The clamping mechanism 7 also includes springs 76, which are respectively disposed between the limiting plate at the end of the transverse column 75 and the hollow plate 71. The springs 76 are movably sleeved on the outer arc surface of the transverse column 75. The downward movement of the upper die base 5 will push the sliding frame 72 to move downward within the hollow plate 71. Through the sliding of the longitudinal column 74 in the inclined groove 73, the transverse column 75 drives the positioning clamping plate 4 to overcome the elastic force of the springs 76 and move towards the sheet metal part. The four positioning clamping plates 4 move the same distance. When the positioning clamping plate 4 contacts the sheet metal part, the four positioning clamping plates 4 are used to position the sheet metal part. After stamping is completed... The four positioning clamps 4 are reset, providing ample space for the loading and unloading of sheet metal parts. The clamping mechanism 7 also includes a pressure plate 77 and protrusions 78. The pressure plate 77 is located on the upper outer side of the lower pressure plate 11, and the protrusions 78 are respectively located on the upper surface of the sliding frame 72. The upper ends of the protrusions 78 all protrude through the clearance holes on the surface of the hollow plate 71. During the downward movement of the upper mold base 5, the pressure plate 77 first contacts the protrusions 78, and applies a downward force to the protrusions 78, pushing the sliding frame 72 to move. The lower ends of the hollow plates 71 are rotatably connected to adjusting screws 8, which are respectively connected to the lower mold base 11. The surface has threaded holes for connection. By rotating the adjusting screw 8, the position of the hollow plate 71 can be adjusted. This is suitable for positioning sheet metal parts of different sizes. Guide posts 9 are provided between the outer side of the lower template 3 and the inner wall of the groove 2. The guide posts 9 are horizontally slidably connected to the guide holes at the lower end of the hollow plate 71, providing guidance and support for the movement of the hollow plate 71. The sides of the hollow plate 71 away from the lower template 3 are provided with scale plates 10. The scale plates 10 are slidably connected in the sliding holes on the surface of the lower mold base 1, which facilitates the determination of the distance the hollow plate 71 moves, making the position of the hollow plate 71 more accurate.

[0022] The working principle of the sheet metal stamping die provided by this utility model is as follows: During the sheet metal processing, the sheet metal part is placed on the upper surface of the lower template 3. At this time, under the elastic force of the spring 76, the positioning clamps 4 are all in contact with the surface of the hollow plate 71. There is sufficient gap between the positioning clamps 4 to facilitate the feeding of the sheet metal part. After feeding is completed, the external drive component drives the upper die base 5 to move down. During the downward movement, the pressure plate 77 first contacts the protrusion 78. Due to the obstruction of the protrusion 78, as the lower die base 1 continues to move down, it will overcome the elastic force of the top pressure spring 13, causing the telescopic rod 12 to retract. Under the elastic force of the top pressure spring 13, the pressure plate 77 applies a downward force to the protrusion 78, pushing the sliding frame 72 to move down in the hollow plate 71. Through the sliding of the longitudinal column 74 in the inclined groove 73, The transverse column 75 drives the positioning clamping plate 4 to overcome the elastic force of the spring 76 and move towards the sheet metal part. The four positioning clamping plates 4 move the same distance. When the positioning clamping plate 4 contacts the sheet metal part, the lower pressure plate 11 simultaneously contacts the upper surface of the sheet metal part. The lower pressure plate 11 and the pressure plate 77 no longer move downward. Under the elastic force of the top pressure spring 13, a downward force is applied to the sheet metal part, pressing the sheet metal part onto the upper surface of the lower template 3, accurately positioning the sheet metal part. Then, as the upper mold base 5 continues to move downward, the sheet metal part is stamped by the cooperation of the upper template 6 and the lower template 3. After stamping, the external drive component drives the upper mold base 5 to move upward and reset. Under the elastic force of the spring 76, the positioning clamping plate 4 returns to the state of being in contact with the hollow plate 71, providing sufficient space for the blanking of the sheet metal part.

[0023] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sheet metal stamping die, comprising a lower die base (1), wherein a groove (2) is provided on the upper surface of the lower die base (1), a lower template (3) is provided in the middle of the bottom wall of the groove (2), positioning clamps (4) are slidably connected inside the groove (2), an upper die base (5) is vertically slidably connected to the upper side of the lower die base (1), an upper template (6) is provided in the middle of the lower surface of the upper die base (5), and a lower pressure plate (11) with elastic limiting is vertically slidably connected to the outer edge of the lower surface of the upper die base (5), characterized in that: It also includes a tightening mechanism (7); The clamping mechanism (7) includes a hollow plate (71), a sliding frame (72), a sloping groove (73), a longitudinal column (74), and a transverse column (75). The hollow plate (71) is slidably connected to the inside of the groove (2). There are four hollow plates (71) and they are distributed around the lower template (3). The interior of each hollow plate (71) is vertically slidably connected to a sliding frame (72). The interior of each sliding frame (72) is provided with a sloping groove (73). The three sloping grooves (73) of the same sliding frame (72) are slidably connected to a longitudinal column (74). The outer arc surface of the longitudinal column (74) is provided with a transverse column (75). The positioning clamp (4) is respectively set between the ends of the two transverse columns (75) of the same longitudinal column (74).

2. The sheet metal stamping die according to claim 1, characterized in that: The clamping mechanism (7) also includes springs (76), which are respectively disposed between the limiting plate and the hollow plate (71) at the end of the transverse column (75), and the springs (76) are respectively movably sleeved on the outer arc surface of the transverse column (75).

3. The sheet metal stamping die according to claim 1, characterized in that: The clamping mechanism (7) also includes a pressure plate (77) and a protruding post (78). The pressure plate (77) is located on the upper side of the outer surface of the lower pressure plate (11), and the protruding posts (78) are respectively located on the upper surface of the sliding frame (72). The upper ends of the protruding posts (78) all pass through the clearance hole on the surface of the hollow plate (71).

4. The sheet metal stamping die according to claim 1, characterized in that: The lower end of each hollow plate (71) is rotatably connected to an adjusting screw (8), which is threadedly connected to the screw hole on the surface of the lower mold base (1).

5. A sheet metal stamping die according to claim 1, characterized in that: Guide posts (9) are provided between the outer side of the lower template (3) and the inner wall of the groove (2), and the guide posts (9) are horizontally slidably connected to the guide holes at the lower end of the hollow plate (71).

6. A sheet metal stamping die according to claim 1, characterized in that: The hollow plate (71) is provided with a scale plate (10) on the side away from the lower template (3), and the scale plate (10) is slidably connected to the sliding hole on the surface of the lower mold base (1).

7. A sheet metal stamping die according to claim 1, characterized in that: Telescopic rods (12) are provided between the lower surface of the upper mold base (5) and the upper surface of the lower pressure plate (11), and top pressure springs (13) are provided between the upper surface of the telescopic column of the telescopic rod (12) and the top wall of the telescopic cylinder of the telescopic rod (12).

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