Cold stamping die for improving stability of machined part

Abstract

The utility model relates to the technical field of cold stamping, in particular to a cold stamping die for improving the stability of a machined part. The die comprises an upper die base and a lower die base. A female die and a stabilizing assembly used for clamping and fixing a workpiece to be machined are arranged on the top face of the lower die base. A male die matched with the female die is arranged on the bottom face of the upper die base. In the cold stamping process, a to-be-machined workpiece fixedly placed on the top face of the lower die base is clamped through the stabilizing assembly, so that the position of the to-be-machined workpiece is prevented from moving. According to the cold stamping die, to-be-machined workpieces of different sizes can be transversely clamped and limited from the surface of the female die through the stabilizing assembly arranged on the lower die base, and the to-be-machined workpieces can be effectively prevented from moving in the stamping process of the to-be-machined workpieces, so that the situation that due to the fact that the positions of the to-be-machined workpieces move, the to-be-machined workpieces are not damaged is avoided. And therefore, the stamping quality of the workpiece to be machined is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold stamping, and particularly relates to a cold stamping die for improving the stability of a workpiece. Background Art

[0002] Stamping is a cold stamping die 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 the material, thereby obtaining the required parts to improve the stability of the workpiece. In the cold stamping process, a special process equipment that processes materials (metal or non-metal) into parts (or semi-finished products) is called a cold stamping die (commonly known as a cold stamping die).

[0003] In the process of cold stamping the workpiece material, the punch of the stamping mold in the prior art will cause the whole mold to vibrate due to the downward force when it is pressed down. The vibration effect will easily cause the position of the workpiece inside the die to move, which will lead to a decrease in the stamping accuracy of the workpiece during stamping, thus affecting the molding quality of the workpiece. Therefore, it is a technical problem that needs to be solved urgently by those skilled in the art to invent a cold stamping die that can effectively improve the stability of the workpiece during the processing. Utility Model Content

[0004] In view of the above problems, the utility model proposes a cold stamping die for improving the stability of the workpiece, so as to solve the technical problem that the position of the workpiece inside the die is easily displaced during the cold stamping process of the workpiece material in the prior art, resulting in reduced stamping accuracy.

[0005] The utility model is realized by the following scheme:

[0006] A cold stamping die for improving the stability of a workpiece, comprising an upper die seat and a lower die seat;

[0007] The top surface of the lower die seat is provided with a concave die and a stabilizing component for clamping and fixing the workpiece to be processed;

[0008] The bottom surface of the upper die seat is provided with a convex die matching the concave die;

[0009] During the cold stamping process, the workpiece to be processed placed on the top surface of the lower die seat is clamped and fixed by the stabilizing component to prevent the workpiece to be processed from moving.

[0010] In order to better realize the utility model, further optimization is made in the above structure, and the stabilizing assembly includes a driving motor, a bidirectional lead screw, a moving plate and a clamping plate;

[0011] The driving motor is arranged inside the lower die base;

[0012] The bidirectional lead screw is coaxially arranged at the action end of the driving motor, the number of the movable plates is two, and the two movable plates are arranged on the bidirectional lead screw close to each other or away from each other along the length direction of the bidirectional lead screw;

[0013] There are two groups of the clamping plates, both of which are located on the top surface of the lower die base, and the two groups of the clamping plates are respectively connected to the two groups of the movable plates.

[0014] In order to better realize the utility model, further optimization is made in the above structure, and the stabilizing assembly further includes a limiting rod;

[0015] The limiting rod is arranged inside the lower die seat, and the length direction of the limiting rod is parallel to the length direction of the bidirectional lead screw;

[0016] The movable plate is provided with a limiting hole, and the movable plate is slidably sleeved on the limiting rod through the limiting hole.

[0017] In order to better realize the utility model, further optimization is made in the above structure, the number of the limit rods is two, and the two limit rods are respectively arranged on both sides of the bidirectional screw.

[0018] In order to better realize the utility model, further optimization is made in the above structure, a sliding hole is arranged on the lower die base, and the length direction of the sliding hole is parallel to the length direction of the bidirectional screw; a moving rod is arranged on the moving plate, and the end of the moving rod away from the moving plate passes through the sliding hole and is connected to the clamping plate.

[0019] In order to better realize the utility model, further optimization is made in the above structure, the number of the sliding holes is two, and the two sliding holes are respectively arranged close to the two sides of the lower die base.

[0020] In order to better realize the utility model, the above structure is further optimized, and a pressing component for pressing and fixing the workpiece to be processed is provided on the upper die seat;

[0021] During the cold stamping process, the workpiece to be processed placed on the top surface of the lower die seat is fixed by the cooperation of the pressing component and the stabilizing component to prevent the position of the workpiece to be processed from moving.

[0022] In order to better realize the utility model, further optimization is made in the above structure, and the pressing assembly includes a stabilizing pressing plate, a fixing rod, a sliding sleeve and a compression spring;

[0023] The stabilizing plate is provided with a through hole matching the cross-sectional shape of the punch, the stabilizing plate is slidably sleeved on the punch through the through hole, and two connecting rods are hingedly connected to one side of the stabilizing plate facing the upper die seat;

[0024] The fixing rod is arranged in the upper die seat, and the length direction of the fixing rod is perpendicular to the sliding direction of the stable pressing plate;

[0025] There are two sliding sleeves, and both sliding sleeves are slidably arranged on the fixing rod;

[0026] There are two compression springs, both of which are sleeved on the fixed rod, and the two compression springs are respectively located at one end of the two sliding sleeves that are away from each other, and both ends of the compression springs are respectively in contact with the sliding sleeves and the upper die seat;

[0027] One end of the two connecting rods away from the stabilizing pressure plate is hinged to the two sliding sleeves respectively.

[0028] In order to better realize the utility model, the above structure is further optimized, and a positioning rod is provided on the side of the stabilizing plate facing the upper die seat, and the length direction of the positioning rod is parallel to the sliding direction of the stabilizing plate;

[0029] The upper die seat is provided with a positioning through hole at a position corresponding to the positioning insertion rod, and one end of the positioning insertion rod away from the stabilizing pressure plate passes through the positioning through hole.

[0030] In order to better realize the utility model, further optimization is made in the above structure, and the cold stamping die also includes a base and a top seat;

[0031] The lower die seat is arranged on the base, the upper die seat is arranged on the top seat, a driving assembly is arranged on the base, and the top seat is arranged at the action end of the driving assembly; the top seat is driven by the driving assembly to move, so as to drive the upper die seat to move in a direction close to or away from the lower die seat.

[0032] The cold stamping die provided by the utility model has at least the following technical effects:

[0033] The cold stamping die can laterally clamp and limit workpieces of different sizes from the surface of the die through a stabilizing component arranged on the lower die base. During the stamping process of the workpiece to be processed, the position of the workpiece to be processed can be effectively prevented from moving, so as to avoid stamping instability and reduced stamping accuracy caused by the movement of the position of the workpiece to be processed, thereby effectively improving the stamping quality of the cold stamping die.

[0034] In addition, by setting the pressing assembly on the upper die seat, the workpieces to be processed of different sizes can be limited in position for a second time from above, which can effectively increase the processing accuracy and quality of the cold stamping die. The compression spring set can limit the position of the workpiece to be processed in advance, thereby increasing the position stability of the workpiece to be processed when the pressure is continuously pressed down.

[0035] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic structural diagram of a cold stamping die for improving the stability of a workpiece according to the utility model is shown;

[0038] Figure 2 A cross-sectional view of a lower die seat in a cold stamping die for improving the stability of a workpiece according to the utility model is shown;

[0039] Figure 3 A schematic diagram of the structure of a stabilizing component in a cold stamping die for improving the stability of a workpiece according to the utility model is shown;

[0040] Figure 4 A schematic diagram of the structure of an upper die seat in a cold stamping die for improving the stability of a workpiece according to the utility model is shown;

[0041] Figure 5 The utility model shows a structural schematic diagram of a pressing component in a cold stamping die for improving the stability of a workpiece.

[0042] Reference numerals:

[0043] 1. Base; 2. Lower die seat; 3. Hydraulic cylinder; 4. Concave die; 5. Top seat; 6. Upper die seat; 7. Punch; 8. Driving motor; 9. Bidirectional screw; 10. Moving plate; 11. Moving rod; 12. Stabilizing splint 1; 13. Stabilizing splint 2; 14. Fixed rod; 15. Sliding sleeve; 16. Rotating bracket; 17. Compression spring; 18. Stabilizing pressure plate; 19. Connecting rod 1; 20. Connecting rod 2; 21. Positioning rod; 22. Positioning through hole; 23. Limiting hole; 24. Limiting rod; 25. Fixed slot; 26. Sliding hole; 27. Mounting slot. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] Example:

[0046] A cold stamping die for improving the stability of a workpiece, comprising an upper die seat 6 and a lower die seat 2, see Figure 1 ;in,

[0047] The top surface of the lower die base 2 is provided with a die 4 and a stabilizing component for clamping and fixing the workpiece to be processed;

[0048] The bottom surface of the upper die seat 6 is provided with a convex die 7 matching the concave die 4;

[0049] During the cold stamping process, the workpiece to be processed placed on the top surface of the lower die base 2 is clamped and fixed by the stabilizing component to prevent the position of the workpiece to be processed from moving.

[0050] The cold stamping die can laterally clamp and limit the workpiece to be processed from the surface of the die 4 through a stabilizing component arranged on the lower die base 2. During the stamping process of the workpiece to be processed, the position of the workpiece to be processed can be effectively prevented from moving, so as to avoid the situation where the stamping is unstable and the stamping accuracy is reduced due to the movement of the position of the workpiece to be processed, thereby effectively improving the stamping quality of the cold stamping die.

[0051] Specifically, the above-mentioned stabilizing assembly includes a driving motor 8, a bidirectional lead screw 9, a moving plate 10 and a clamping plate; wherein,

[0052] The lower die base 2 is provided with a cavity inside, see Figure 2, the top surface of which is provided with an opening communicating with the cavity, the above-mentioned concave mold 4 is placed at the opening of the lower mold base 2, so that a closed cavity is formed inside the lower mold base 2, and the driving motor 8 is arranged in the cavity of the lower mold base 2, that is, inside the lower mold base 2;

[0053] The bidirectional lead screw 9 is coaxially arranged at the action end of the drive motor 8. Figure 3 , its length direction is parallel to the length direction of the lower die base 2, a threaded hole matching the bidirectional lead screw 9 is provided on the movable plate 10, there are two movable plates 10, both movable plates 10 are provided on the bidirectional lead screw 9, and the two movable plates 10 can be moved closer to or farther from each other by rotating the bidirectional lead screw 9;

[0054] There are two groups of the above-mentioned splints, which are a stabilizing splint 12 and a stabilizing splint 2 13. The stabilizing splint 12 and the stabilizing splint 2 13 are connected to the two moving plates 10 respectively.

[0055] By controlling the rotation direction of the driving motor 8, the stabilizing clamping plate 12 and the stabilizing clamping plate 2 13 can be moved closer to or farther from each other, thereby clamping or releasing the workpiece to be processed.

[0056] Optimally, the above-mentioned stabilizing assembly further includes a limiting rod 24, see again Figure 3 ;in,

[0057] The limiting rod 24 is arranged inside the lower die base 2, and the length direction of the limiting rod 24 is parallel to the length direction of the bidirectional lead screw 9;

[0058] A limiting hole 23 is provided on the movable plate 10, and the movable plate 10 is slidably mounted on the limiting rod 24 through the limiting hole 23 to prevent the movable plate 10 from rotating together with the bidirectional lead screw 9 when the driving motor 8 drives the bidirectional lead screw 9 to rotate, so as to make the cold stamping die more stable during operation.

[0059] Preferably, there are two limit rods 24 , and the two limit rods 24 are respectively arranged on both sides of the bidirectional lead screw 9 .

[0060] Optimally, the lower die base 2 is provided with a sliding hole 26, see Figure 2 , the length direction of the sliding hole 26 is parallel to the length direction of the bidirectional lead screw 9;

[0061] A moving rod 11 is disposed on the moving plate 10 , and one end of the moving rod 11 away from the moving plate 10 passes through the sliding hole 26 and is connected to the clamping plate.

[0062] Preferably, there are two sliding holes 26 , and the two sliding holes 26 are respectively arranged close to two sides of the lower die base 2 .

[0063] Optimally, fixing grooves 25 are provided on both sides of the lower die base 2. Figure 2 The fixing groove 25 is a rectangular groove, the length direction of the fixing groove 25 is parallel to the length direction of the sliding hole 26, and the sliding hole 26 is arranged at the bottom of the fixing groove 25; the opening of the fixing groove 25 can facilitate the reciprocating sliding of the stabilizing splint 12 and the stabilizing splint 2 13.

[0064] As a preferred solution of the utility model, the upper die seat 6 is provided with a clamping assembly for clamping and fixing the workpiece to be processed;

[0065] During the cold stamping process, the workpiece to be processed placed on the top surface of the lower die base 2 is fixed by the cooperation of the pressing component and the stabilizing component to prevent the position of the workpiece to be processed from moving.

[0066] Optimally, the above-mentioned pressing assembly includes a stabilizing pressing plate 18, a fixing rod 14, a sliding sleeve 15 and a compression spring 17, see Figure 4 and Figure 5 ;in,

[0067] The stabilizing plate 18 is provided with a perforation matching the cross-sectional shape of the punch 7. The stabilizing plate 18 is slidably sleeved on the punch 7 through the perforation, and the stabilizing plate 18 is hinged to two connecting rods on one side facing the upper die base 6, the two connecting rods being connecting rod 1 19 and connecting rod 20 respectively.

[0068] The fixing rod 14 is arranged in the upper die seat 6, and the length direction of the fixing rod 14 is perpendicular to the sliding direction of the stabilizing plate 18;

[0069] There are two sliding sleeves 15, and both sliding sleeves 15 are slidably disposed on the fixed rod 14;

[0070] There are two compression springs 17, both of which are sleeved on the fixed rod 14, and the two compression springs 17 are respectively located at the ends of the two sliding sleeves 15 that are away from each other, and the two ends of the compression springs 17 are respectively in contact with the sliding sleeves 15 and the upper die seat 6;

[0071] One end of the connecting rod 19 and the connecting rod 20 away from the stabilizing pressure plate 18 is hinged to the two sliding sleeves 15 respectively.

[0072] During the cold stamping process, the upper die seat 6 will approach the lower die seat 2. As the distance between the upper die seat 6 and the lower die seat 2 decreases, the stabilizing plate 18 on the upper die seat 6 will first contact the workpiece to be processed to limit the position of the workpiece to be processed.

[0073] Subsequently, the upper die base 6 will continue to move toward the lower die base 2, and the position of the stabilizing plate 18 will not change. At this time, the reaction force on the stabilizing plate 18 will push the stabilizing plate 18 toward the upper die base 6, so that the stabilizing plate 18 presses the connecting rod 1 19 and the connecting rod 2 20 upward, so that the sliding sleeves 15 on the connecting rod 1 19 and the connecting rod 20 move away from each other and press the compression spring 17.

[0074] The reaction force provided by the compression spring 17 can push the sliding sleeves 15 to move closer to the middle (the sliding sleeves 15 move closer to each other), so that the stabilizing pressure plate 18 can tightly squeeze the workpiece to be processed.

[0075] Preferably, a rotating bracket 16 is provided on the sliding sleeve 15 , and a rotating bracket 16 is also provided on the stabilizing pressure plate 18 . Both ends of the connecting rod 19 and the connecting rod 20 are hinged on the rotating bracket 16 .

[0076] More preferably, the upper die base 6 is provided with a mounting groove 27, see Figure 4 The above-mentioned fixing rod 14 is arranged in the mounting groove 27 .

[0077] Optimally, a positioning rod 21 is provided on the side of the above-mentioned stabilizing plate 18 facing the upper die seat 6, and the length direction of the positioning rod 21 is parallel to the sliding direction of the stabilizing plate 18;

[0078] A positioning hole 22 is provided at the upper die seat 6 corresponding to the position of the positioning rod 21. The end of the positioning rod 21 away from the stabilizing platen 18 passes through the positioning hole 22 to limit the moving direction of the stabilizing platen 18, thereby making the structure of the cold stamping die more stable.

[0079] Optimally, the cold stamping die also includes a base 1 and a top seat 5, see Figure 1 ;in,

[0080] The lower die seat 2 is arranged on the base 1, the upper die seat 6 is arranged on the top seat 5, the base 1 is provided with a driving assembly, and the top seat 5 is arranged at the action end of the driving assembly; the top seat 5 is driven by the driving assembly to move, so as to drive the upper die seat 6 to move toward or away from the lower die seat 2, so as to realize the mutual approach or distance between the upper die seat 6 and the lower die seat 2.

[0081] Preferably, the above-mentioned driving component is a hydraulic cylinder 3.

[0082] The working principle of the above technical solution is as follows:

[0083] After placing the workpiece to be processed on the surface of the die 4, the driving motor 8 is started to drive the bidirectional screw 9 to rotate, so that the bidirectional threads on the bidirectional screw 9 push the two moving plates 10 to move towards each other. During the movement of the moving plate 10, the stabilizing clamping plate 1 12 and the stabilizing clamping plate 2 13 slide on the surface of the die 4, and the workpiece to be processed on the surface of the die 4 is clamped and limited.

[0084] At this time, the upper die base 6 will be driven by the driving assembly to approach the lower die base 2. As the distance between the upper die base 6 and the lower die base 2 decreases, the stabilizing pressure plate 18 on the upper die base 6 will first contact the workpiece to be processed, and further limit the workpiece to be processed to prevent the position of the workpiece to be processed from changing during the cold stamping process, resulting in unstable stamping and reduced stamping accuracy, thereby effectively improving the stamping quality of the cold stamping die.

[0085] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0086] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0087] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cold stamping die for improving the stability of a workpiece, characterized in that: It comprises an upper die base (6) and a lower die base (2); The top surface of the lower die base (2) is provided with a concave die (4) and a stabilizing component for clamping and fixing a workpiece to be processed; The bottom surface of the upper die seat (6) is provided with a convex die (7) matching the concave die (4); During the cold stamping process, the workpiece to be processed placed on the top surface of the lower die base (2) is clamped and fixed by the stabilizing component to prevent the workpiece to be processed from moving.

2. The cold stamping die according to claim 1, characterized in that: The stabilizing assembly comprises a driving motor (8), a bidirectional lead screw (9), a moving plate (10) and a clamping plate; The driving motor (8) is arranged inside the lower die base (2); The bidirectional lead screw (9) is coaxially arranged at the action end of the drive motor (8), and there are two movable plates (10). The two movable plates (10) are arranged on the bidirectional lead screw (9) close to or away from each other along the length direction of the bidirectional lead screw (9); There are two groups of clamping plates, both groups of clamping plates are located on the top surface of the lower die base (2), and the two groups of clamping plates are respectively connected to the two groups of movable plates (10).

3. The cold stamping die according to claim 2, characterized in that: The stabilizing assembly further comprises a limiting rod (24); The limiting rod (24) is arranged inside the lower die base (2), and the length direction of the limiting rod (24) is parallel to the length direction of the bidirectional lead screw (9); The movable plate (10) is provided with a limiting hole (23), and the movable plate (10) is slidably sleeved on the limiting rod (24) through the limiting hole (23).

4. The cold stamping die according to claim 3, characterized in that: There are two limit rods (24), and the two limit rods (24) are respectively arranged on both sides of the bidirectional lead screw (9).

5. The cold stamping die according to claim 2, characterized in that: The lower die base (2) is provided with a sliding hole (26), and the length direction of the sliding hole (26) is parallel to the length direction of the bidirectional lead screw (9); the movable plate (10) is provided with a movable rod (11), and one end of the movable rod (11) away from the movable plate (10) passes through the sliding hole (26) and is connected to the clamping plate.

6. The cold stamping die according to claim 5, characterized in that: There are two sliding holes (26), and the two sliding holes (26) are respectively arranged close to two sides of the lower die base (2).

7. The cold stamping die according to any one of claims 1 to 6, characterized in that: The upper die seat (6) is provided with a clamping assembly for clamping and fixing the workpiece to be processed; During the cold stamping process, the workpiece to be processed placed on the top surface of the lower die seat (2) is fixed by the cooperation between the pressing component and the stabilizing component to prevent the position of the workpiece to be processed from moving.

8. The cold stamping die according to claim 7, characterized in that: The pressing assembly comprises a stabilizing pressing plate (18), a fixing rod (14), a sliding sleeve (15) and a compression spring (17); The stabilizing plate (18) is provided with a through hole matching the cross-sectional shape of the punch (7), the stabilizing plate (18) is slidably sleeved on the punch (7) through the through hole, and the stabilizing plate (18) is hingedly connected to two connecting rods on one side facing the upper die seat (6); The fixing rod (14) is arranged in the upper die seat (6), and the length direction of the fixing rod (14) is perpendicular to the sliding direction of the stabilizing plate (18); There are two sliding sleeves (15), and both sliding sleeves (15) are slidably arranged on the fixing rod (14); There are two compression springs (17), both of which are sleeved on the fixed rod (14), and the two compression springs (17) are respectively located at ends of the two sliding sleeves (15) that are away from each other, and both ends of the compression springs (17) are respectively in contact with the sliding sleeves (15) and the upper die seat (6); One end of the two connecting rods away from the stabilizing pressure plate (18) is hinged to the two sliding sleeves (15) respectively.

9. The cold stamping die according to claim 8, characterized in that: A positioning rod (21) is provided on one side of the stabilizing platen (18) facing the upper die seat (6), and the length direction of the positioning rod (21) is parallel to the sliding direction of the stabilizing platen (18); The upper die seat (6) is provided with a positioning through hole (22) at a position corresponding to the positioning insertion rod (21), and one end of the positioning insertion rod (21) away from the stabilizing pressure plate (18) passes through the positioning through hole (22).

10. The cold stamping die according to claim 1, characterized in that: It also includes a base (1) and a top seat (5); The lower die seat (2) is arranged on the base (1), the upper die seat (6) is arranged on the top seat (5), a driving assembly is arranged on the base (1), and the top seat (5) is arranged at the action end of the driving assembly; the top seat (5) is driven by the driving assembly to move, so as to drive the upper die seat (6) to move in a direction close to or away from the lower die seat (2).

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