Precise shell punching die

Abstract

The utility model discloses a precise shell punching die which comprises a bottom plate, a female die is fixedly connected to the upper portion of the bottom plate, a fixing column is fixedly connected to the upper portion of the female die, a male die is connected to the outer surface of the fixing column in a sliding mode, a punching block is arranged below the male die, and a protection plate is arranged on the bottom plate. A limiting structure is fixedly connected to the upper portion of the bottom plate, a mounting plate is fixedly connected to one side of the protection plate, a clamping groove is formed in the mounting plate, and the mounting plate is clamped in the limiting structure. According to the precise shell punching die, the limiting structures, the protection plates, the mounting plate and the clamping grooves are arranged, the protection plates can be fixed to the two sides of the bottom plate through cooperation of the inclined plates, the reset springs and the mounting plate, the protection plates can conduct protection treatment on a pressed area so as to prevent an operator from making contact with a dangerous area in the operation process, and the safety of the operator is improved. And potential safety hazards are reduced, and the phenomenon that chippings generated in the stamping process splash is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a precision shell punching mold. Background Technique

[0002] A precision shell punching mold, that is, a precision blanking mold, is a special stamping mold, which has significant differences in structure and process from ordinary blanking molds. Precision blanking is a precision stamping process developed on the basis of ordinary stamping technology. Its main feature is that it can produce stamped parts without cracks and tears, with extremely high dimensional accuracy and flatness tolerances. Currently, precision shell punching molds usually consist of a punch, a die, a guiding device, a ejector rod, a blank holder, etc., and are processed by stamping. However, most precision shell punching molds do not have a protective structure, which is likely to cause operators to accidentally come into contact with moving parts during the stamping process, thus posing a certain safety hazard, and the debris generated during stamping is prone to splashing. Content of the Utility Model

[0003] The purpose of the utility model is to provide a precision shell punching mold to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A precision shell punching mold, including a bottom plate, a die is fixedly connected above the bottom plate, a fixed column is fixedly connected above the die, a punch is slidably connected to the outer surface of the fixed column, a stamping block is arranged below the punch, a protective plate is arranged on the bottom plate, a limiting structure is fixedly connected above the bottom plate, one side of the protective plate is fixedly connected with a mounting plate, a clamping groove is opened in the mounting plate, the mounting plate is clamped in the limiting structure, and the limiting structure is clamped in the clamping groove;

[0005] A groove is opened in the protective plate, a buffer structure is fixedly connected to the side of the protective plate, the buffer structure is slidably connected in the groove, the limiting structure includes a sleeve plate, a limiting rod, a fixed sleeve and a fixed disk, a return spring is sleeved outside the limiting rod, an inclined plate is slidably connected in the sleeve plate, and the inclined plate is clamped in the clamping groove.

[0006] As a further preference of this technical solution, heat dissipation holes are opened in the protective plate, a sliding groove is opened above the bottom plate, a sliding block is fixedly connected below the protective plate, and the sliding block is slidably connected in the sliding groove.

[0007] As a further preference of this technical solution, the sleeve plate is fixedly connected above the bottom plate, the limiting rod is fixedly connected to the side of the inclined plate, and the fixed sleeve is fixedly connected to the side of the sleeve plate.

[0008] As a further preference of this technical solution, the limiting rod is slidably connected in the fixed sleeve, the fixed disk is connected to the lower part of the fixed sleeve through a return spring, and the mounting plate is snap-connected in the sleeve plate.

[0009] As a further preference of this technical solution, the buffer structure includes a convex block and a rubber plate. The convex block is fixedly connected to the left side of the protective plate. A support rod is fixedly connected above the convex block. An L-shaped plate is fixedly connected to the left side of the rubber plate.

[0010] As a further preference of this technical solution, the L-shaped plate is slidably connected to the outer surface of the support rod, and a buffer spring is sleeved outside the support rod.

[0011] As a further preference of this technical solution, the convex block is connected to the L-shaped plate through a buffer spring. A convex plate is fixedly connected below the rubber plate, and the convex plate is slidably connected in the groove.

[0012] The utility model provides a precision shell punching die, which has the following beneficial effects:

[0013] (1) By arranging a limiting structure, a protective plate, a mounting plate and a card slot, when the protective plate moves in the bottom plate, the mounting plate on the side will contact the inclined plate. When the inclined plate is subjected to a thrust force, it will slide in the sleeve plate. When the limiting rod moves in the fixed sleeve, the fixed disk will drive the return spring to deform. When the protective plate is completely attached to the bottom plate, when the inclined plate is separated from the mounting plate, the reset inclined plate will be snap-connected in the card slot. Through the cooperation between the inclined plate, the return spring and the mounting plate, the protective plate can be fixed on both sides of the bottom plate, and the protective plate can protect the pressed area to prevent the operator from contacting the dangerous area during operation, reducing its safety hazard and avoiding the phenomenon of debris splashing during stamping.

[0014] (2) By arranging a buffer structure and a groove, when the punch moves, its side will contact the rubber plate. When the rubber plate is subjected to a thrust force, the convex plate will slide in the groove, and the L-shaped plate on the side of the rubber plate will move on the surface of the support rod. When the L-shaped plate moves, it will drive the buffer spring to deform through the convex block, so that the buffer structure can play a certain buffering role on the punch, and the rubber plate can absorb and reduce the noise and vibration generated during the stamping process, thereby protecting the precision shell punching die from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 is a three-dimensional structural schematic diagram of the bottom plate of the utility model;

[0017] Figure 3Schematic cross-sectional structure diagram of the limit structure of the present utility model in three dimensions;

[0018] Figure 4 Schematic cross-sectional structure diagram of the protective plate of the present utility model in three dimensions;

[0019] In the figure: 1, bottom plate; 2, female die; 3, fixing column; 4, male die; 5, stamping block; 6, limit structure; 601, sleeve plate; 602, inclined plate; 603, limit rod; 604, fixing sleeve; 605, return spring; 606, fixing plate; 7, protective plate; 8, buffer structure; 801, convex block; 802, support rod; 803, L-shaped plate; 804, buffer spring; 805, rubber plate; 806, convex plate; 9, heat dissipation hole; 10, slider; 11, chute; 12, mounting plate; 13, card slot; 14, groove. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0021] The present utility model provides a technical solution: As Figure 1 and Figure 4 shown, in this embodiment, a precision shell stamping die includes a bottom plate 1, a female die 2 is fixedly connected above the bottom plate 1, a fixing column 3 is fixedly connected above the female die 2, a male die 4 is slidably connected to the outer surface of the fixing column 3, a stamping block 5 is provided below the male die 4, a protective plate 7 is provided on the bottom plate 1, a limit structure 6 is fixedly connected above the bottom plate 1, a mounting plate 12 is fixedly connected to one side of the protective plate 7, a card slot 13 is opened in the mounting plate 12, the mounting plate 12 is clamped in the limit structure 6, and the limit structure 6 is clamped in the card slot 13;

[0022] A groove 14 is opened in the protective plate 7, a buffer structure 8 is fixedly connected to the side surface of the protective plate 7, the buffer structure 8 is slidably connected in the groove 14, the limit structure 6 includes a sleeve plate 601, a limit rod 603, a fixing sleeve 604 and a fixing plate 606, a return spring 605 is sleeved outside the limit rod 603, an inclined plate 602 is slidably connected in the sleeve plate 601, and the inclined plate 602 is clamped in the card slot 13.

[0023] As Figure 1 and Figure 2 shown, heat dissipation holes 9 are opened in the protective plate 7, a chute 11 is opened above the bottom plate 1, a slider 10 is fixedly connected below the protective plate 7, and the slider 10 is slidably connected in the chute 11.

[0024] By setting the slider 10 and the chute 11, when a thrust or a pulling force is applied to the protective plate 7, the slider 10 below the protective plate 7 will slide within the chute 11, enabling the slider 10 and the chute 11 to play a certain guiding role for the protective plate 7 and preventing the phenomenon that the position of the protective plate 7 deviates from that of the bottom plate 1 during fixation.

[0025] As Figure 3 shown, the sleeve plate 601 is fixedly connected above the bottom plate 1, the limiting rod 603 is fixedly connected to the side surface of the inclined plate 602, the fixed sleeve 604 is fixedly connected to the side surface of the sleeve plate 601, the limiting rod 603 is slidably connected within the fixed sleeve 604, the fixed disk 606 is connected to the lower part of the fixed sleeve 604 through a return spring 605, and the mounting plate 12 is clamped within the sleeve plate 601.

[0026] By setting the return spring 605 and the fixed disk 606, when the mounting plate 12 penetrates within the sleeve plate 601, the mounting plate 12 will contact the inclined plate 602. When the inclined plate 602 is subjected to a thrust, it will move accordingly, and after the fixed disk 606 moves, it will drive the return spring 605 to deform, enabling the return spring 605 to play a certain supporting role for the movement of the inclined plate 602. When the inclined plate 602 loses resistance, it will be reset through the return spring 605.

[0027] As Figure 4 shown, the buffer structure 8 includes a convex block 801 and a rubber plate 805. The convex block 801 is fixedly connected to the left side of the protective plate 7, a support rod 802 is fixedly connected above the convex block 801, an L-shaped plate 803 is fixedly connected to the left side of the rubber plate 805, the L-shaped plate 803 is slidably connected to the outer surface of the support rod 802, a buffer spring 804 is sleeved outside the support rod 802, the convex block 801 is connected to the L-shaped plate 803 through the buffer spring 804, and a convex plate 806 is fixedly connected below the rubber plate 805. The convex plate 806 is slidably connected within the groove 14.

[0028] By setting the buffer spring 804 and the rubber plate 805, when the stamping block 5 below the punch 4 punches the workpiece within the die 2, it will contact the rubber plate 805. When the rubber plate 805 moves, it will drive the buffer spring 804 to deform through the convex block 801, thereby being able to buffer the impact force generated during the punching of the punch 4. Reducing the vibration means that the material flow during the stamping process is more stable, thereby reducing dimensional deviations and surface defects.

[0029] The present utility model provides a precision shell punching die, and the specific working principle is as follows:

[0030] When the precision shell punching die needs to perform stamping processing on the workpiece after the workpiece assembly is completed, a thrust can be applied to the protective plate 7. The slider 10 below the protective plate 7 will slide in the chute 11. When the protective plate 7 moves, the mounting plate 12 on the side will contact the inclined plate 602. When the inclined plate 602 receives the thrust, it will slide in the sleeve plate 601. When the limiting rod 603 moves in the fixed sleeve 604, the fixed disk 606 will drive the return spring 605 to deform. When the protective plate 7 is completely attached to the bottom plate 1, when the inclined plate 602 is separated from the mounting plate 12, it will be reset by the return spring 605. After resetting, the inclined plate 602 will be clamped in the card slot 13;

[0031] When the punch 4 slides on the surface of the fixed column 3, the stamping block 5 below the punch 4 will perform stamping processing on the workpiece in the die 2. When the punch 4 moves, the side will contact the rubber plate 805. When the rubber plate 805 receives the thrust, the convex plate 806 will slide in the groove 14, and the L-shaped plate 803 on the side of the rubber plate 805 will move on the surface of the support rod 802. When the L-shaped plate 803 moves, it will drive the buffer spring 804 to deform through the convex block 801.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision shell punching die, comprising a base plate (1), characterized in that: A concave die (2) is fixedly connected to the top of the bottom plate (1), a fixed column (3) is fixedly connected to the top of the concave die (2), a convex die (4) is slidably connected to the outer surface of the fixed column (3), a punch block (5) is provided below the punch (4), a protective plate (7) is provided on the bottom plate (1), a limiting structure (6) is fixedly connected to the top of the bottom plate (1), a mounting plate (12) is fixedly connected to one side of the protective plate (7), a slot (13) is provided in the mounting plate (12), the mounting plate (12) is snap-fitted into the limiting structure (6), and the limiting structure (6) is snap-fitted into the slot (13); A groove (14) is provided in the protective plate (7); a buffer structure (8) is fixedly connected to the side of the protective plate (7); the buffer structure (8) is slidably connected in the groove (14); the limiting structure (6) comprises a sleeve plate (601), a limiting rod (603), a fixed sleeve (604) and a fixed disk (606); a return spring (605) is connected to the outer sleeve of the limiting rod (603); an inclined plate (602) is slidably connected in the sleeve plate (601); and the inclined plate (602) is clamped in the clamping groove (13).

2. A precision shell punching die according to claim 1, characterized in that: A heat dissipation hole (9) is provided in the protective plate (7), a slide groove (11) is provided above the bottom plate (1), a slider (10) is fixedly connected below the protective plate (7), and the slider (10) is slidably connected in the slide groove (11).

3. The precision shell punching die according to claim 1, characterized in that: The sleeve plate (601) is fixedly connected to the top of the bottom plate (1), the limiting rod (603) is fixedly connected to the side of the inclined plate (602), and the fixing sleeve (604) is fixedly connected to the side of the sleeve plate (601).

4. A precision shell punching die according to claim 3, characterized in that: The limiting rod (603) is slidably connected in the fixing sleeve (604), the fixing plate (606) is connected below the fixing sleeve (604) via a return spring (605), and the mounting plate (12) is clamped in the sleeve plate (601).

5. The precision shell punching die according to claim 1, characterized in that: The buffer structure (8) comprises a protrusion (801) and a rubber plate (805); the protrusion (801) is fixedly connected to the left side of the protective plate (7); a support rod (802) is fixedly connected above the protrusion (801); and an L-shaped plate (803) is fixedly connected to the left side of the rubber plate (805).

6. A precision shell punching die according to claim 5, characterized in that: The L-shaped plate (803) is slidably connected to the outer surface of the support rod (802), and a buffer spring (804) is connected to the outer surface of the support rod (802).

7. A precision shell punching die according to claim 6, characterized in that: The convex block (801) is connected to the L-shaped plate (803) via a buffer spring (804); a convex plate (806) is fixedly connected below the rubber plate (805); and the convex plate (806) is slidably connected in the groove (14).

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