A precision stamping die device

Abstract

The present invention belongs to the field of stamping die technology, and in particular to a precision stamping die device. The following scheme is proposed, comprising a base, a lower die and an upper die, a hydraulic lifting rod being connected between the outer wall of the base and the upper die, a cavity with a top opening being provided in the base, two lower dies being provided in the base, a rotating shaft being horizontally rotatably connected to the middle position of the base, one end of the rotating shaft being transmission-connected to a motor, two symmetrically arranged fixed frames being fixed to the outer wall of the rotating shaft, and the lower die being detachably mounted on the outer wall of the fixed frame away from the rotating shaft. The present invention rotates and switches to use the lower die after punching once or a fixed number of times, so that the lower die rotated to the bottom of the rotating shaft can clean up debris under the action of the punching vibration, thereby ensuring the neatness of the surface of the lower die used to support the workpiece during continuous and large-scale punching operations, thereby improving the precision of continuous and large-scale punching.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping dies, and in particular to a precision stamping die device. Background Art

[0002] Stamping dies are mainly used to perform punching operations on workpiece materials.

[0003] A Chinese patent with patent publication number CN218395618U discloses an automatic precision stamping die, including a stamping device, a pushing device fixedly installed in the middle of the stamping device, an automatic disassembly component threadedly installed in the middle of the pushing device, and a lower die detachably installed on the inner surface of the automatic disassembly component; handle plates are fixedly installed on the front and rear sides of the lower die, and positioning blocks are fixedly installed on the bottom of the left and right sides of the lower die.

[0004] However, a large number of workpieces are often punched continuously during the production process. During the long punching process, debris will accumulate on the surface of the lower mold that supports the workpiece, which can easily affect the punching operation of subsequent workpieces. Summary of the Invention

[0005] Based on the technical problems of the background technology, the present invention proposes a precision stamping die device.

[0006] The present invention proposes a precision stamping mold device, which includes a base, a lower mold and an upper mold. A hydraulic lifting rod is connected between the outer wall of the base and the upper mold. A cavity with a top opening is provided in the base. Two lower molds are provided in the base. The middle position of the base is horizontally rotatably connected to a rotating shaft, one end of the rotating shaft is transmission-connected to a motor, and two symmetrically arranged fixed frames are fixed to the outer wall of the rotating shaft. The lower mold can be detachably mounted on the outer wall of the fixed frame away from the rotating shaft.

[0007] Preferably, a detachably connected bottom box is provided at the bottom end of the base, the bottom of the cavity in the base is open, and the top of the bottom box is open, and a plurality of air injection tubes for injecting air toward the lower mold are fixed on the bottom box.

[0008] Preferably, a plurality of vertical tubes are installed between the two fixed frames, two collision balls are arranged in the vertical tubes, a spring is connected between the two collision balls, the top and bottom ends of the vertical tubes are both open, and the outer walls of the two collision balls are respectively in contact with the two fixed frames in the normal placement state.

[0009] Preferably, horizontally movable positioning frames are provided on both sides of the base, and a horizontally extending electric push rod is connected between the positioning frame and the outer wall of the base.

[0010] Preferably, the positioning frame is provided with two horizontal plates, a vertical plate is fixed between the two horizontal plates, through grooves are opened at positions corresponding to the horizontal plates on both sides of the base, and the outer walls of the horizontal plates are in sliding contact with the outer wall of the fixing frame away from the rotating shaft.

[0011] Preferably, a plurality of positioning blocks are fixed to the side of the horizontal plate facing the fixed frame, and positioning grooves are provided on the side of the lower mold at positions corresponding to the positioning blocks, and the outer walls of the positioning blocks are in sliding contact with the inner walls of the positioning grooves.

[0012] Preferably, a limiting cylinder is fixed in the middle position of the inner walls on both sides of the base, the top and bottom ends of the limiting cylinder are open, a second spring is placed in the limiting cylinder, and a connecting block connected to the second spring is provided near the fixed frame on the horizontal plate.

[0013] Preferably, a sliding groove is provided at the position corresponding to the horizontal plate and the connecting block, and the connecting block is provided with a block 1 that is slidably connected to the sliding groove. Block 1 slides in the sliding groove toward both sides of the base. Block 3 installed with spring 2 is fixed to the bottom end of block 1, and block 2 is fixed to the top end of block 1. The cross-sections of blocks 2 and 3 are both larger than the cross-section of the sliding groove.

[0014] Preferably, a mounting frame is fixed to the outside of the upper mold, mounting rings are fixed on both sides of the mounting frame, the inner wall of the mounting ring is slidably connected to a vertically extending movable rod, a spring three is connected between the top of the movable rod and the mounting ring, and a pressure block is fixed to the bottom end of the movable rod.

[0015] Preferably, the bottom of the pressing block is configured as an inclined surface inclined downward in a direction away from the upper mold, and the top of the second block located above the positioning frame is configured as an inclined surface inclined upward in a direction toward the middle of the base.

[0016] The beneficial effects of the present invention are:

[0017] 1. In the present invention, the lower die is rotated and switched for use after punching once or a fixed number of times, so that the lower die rotated below the rotating shaft can clean up the debris under the punching vibration, thereby ensuring the neatness of the surface of the lower die used to support the workpiece during continuous and large-scale punching operations, thereby improving the precision of continuous and large-scale punching.

[0018] 2. In the present invention, the positioning frames originally extending outward on both sides are pushed and slid toward the base through the electric push rod, so that the lower mold located above the rotating shaft is stable during the punching process and the punching effectiveness is guaranteed. By increasing the connection position between the two lower molds, the mechanical vibration generated by the punching of the lower mold located above the rotating shaft is transmitted from the surrounding positions to the lower mold located below the rotating shaft, thereby improving the vibration dispersion and shedding effect of debris on the surface of the lower mold located below the rotating shaft.

[0019] 3. In the present invention, the directional control effect of the vibration transmission is improved by further bending and stretching the spring 2 through the movable contact between the pressure block and the second block, thereby further improving the vibration cleaning effect on the surface of the lower mold below the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall front structure of a precision stamping die device proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the overall back structure of a precision stamping die device proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the overall cross-sectional structure of a precision stamping die device proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of a base of a precision stamping die device proposed by the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the rotating shaft position of a precision stamping die device proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of a vertical cylinder of a precision stamping die device proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the position structure of a positioning frame of a precision stamping die device proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the position structure of the connection block of a precision stamping die device proposed by the present invention;

[0028] Figure 9 This is a schematic diagram of the installation frame position structure of a precision stamping die device proposed by the present invention.

[0029] In the figure: 1 base, 2 lower mold, 3 hydraulic lifting rod, 4 upper mold, 5 rotating shaft, 501 motor, 6 fixed frame, 7 fixed rod, 8 bottom box, 9 air injection tube, 10 electric push rod, 11 positioning frame, 111 horizontal plate, 112 vertical plate, 113 positioning block, 12 through groove, 13 positioning groove, 14 vertical cylinder, 15 collision ball, 16 spring one, 17 spring two, 18 slide, 19 connecting block, 191 block one, 192 block two, 193 block three, 20 limit cylinder, 21 mounting frame, 22 mounting ring, 23 movable rod, 24 spring three, 25 pressure block. DETAILED DESCRIPTION

[0030] Example 1: Reference Figure 1-Figure 7, a precision stamping die device includes a base 1, a lower die 2 and an upper die 4, a hydraulic lifting rod 3 is connected between the outer wall of the base 1 and the upper die 4, a cavity with a top opening is provided in the base 1, two lower dies 2 are provided in the base 1, the middle position of the base 1 is horizontally rotated and connected with a rotating shaft 5, one end of the rotating shaft 5 is connected to a motor 501 for transmission, two symmetrically arranged fixed frames 6 are fixed on the outer wall of the rotating shaft 5, a fixed rod 7 is fixedly connected between the outer wall of the rotating shaft 5 and the fixed frame 6, the lower die 2 and the fixed frame 6 are detachably installed, the corresponding surface of the lower die 2 and the upper die 4 is located at a position where the fixed frame 6 is away from the rotating shaft 5, thereby making one of the lower dies 2 face upwards through the rotating shaft 5, the position of the lower die 2 and the upper die 4 Correspondingly, after the workpiece is placed on the lower mold 2, the upper mold 4 is lowered by the hydraulic lifting rod 3 for punching operation. At this time, the other lower mold 2 is located below the rotating shaft 5 and the surface of the lower mold 2 used for punching is set downward. The lower mold 2 located above the rotating shaft 5 can transmit vibrations due to the punching impact, so that the lower mold 2 located below the rotating shaft 5 can shake out the debris on the surface or in the punching groove under the action of vibration; thus, after one or a fixed number of punching, the lower mold 2 is rotated and switched to use, so that the lower mold 2 rotated to the bottom of the rotating shaft 5 can clean up the debris under the action of punching vibration, thereby ensuring the neatness of the surface of the lower mold 2 used to carry the workpiece during continuous and large-scale punching operations, thereby improving the precision of continuous and large-scale punching.

[0031] In the present invention, a detachably connected bottom box 8 is provided at the bottom end of the base 1, the bottom of the cavity in the base 1 is open, and the top of the bottom box 8 is open. A plurality of air jets 9 for spraying air toward the lower mold 2 are fixed on the bottom box 8. Thus, the lower mold 2 rotated to the bottom of the rotating shaft 5 is sprayed with air through the plurality of air jets 9, and the debris in the slot of the lower mold 2 is cleared out and falls into the bottom box 8 for centralized collection in combination with mechanical vibration and blowing operations, thereby ensuring the cleaning effect of the surface of the lower mold 2 used at intervals.

[0032] In the present invention, a plurality of vertical cylinders 14 are installed between the two fixed frames 6, and a plurality of ventilation grooves are provided on the outer wall of the vertical cylinder 14. Two collision balls 15 are provided in the vertical cylinder 14, and a spring 16 is connected between the two collision balls 15. The top and bottom ends of the vertical cylinder 14 are both opened. In the normal placement state, the outer walls of the two collision balls 15 are respectively in contact with the two fixed frames 6. The collision balls 15 connected by the spring 16 are arranged between the two fixed frames 6. When the fixed frame 6 located above the rotating shaft 5 is hit by punching, the mechanical vibration can be transmitted to various positions of the lower mold 2 located below the rotating shaft 5 through the movable spring 16 and the collision balls 15, so as to improve the cleaning effect of the surface of the lower mold 2 below the rotating shaft 5.

[0033] In the present invention, both sides of the base 1 are provided with horizontally movable positioning frames 11, and a horizontally extending electric push rod 10 is connected between the positioning frame 11 and the outer wall of the base 1. The positioning frame 11 is provided with two horizontal plates 111, and a vertical plate 112 is fixed between the two horizontal plates 111. The vertical plate 112 is connected to the electric push rod 10. Through grooves 12 are provided at positions corresponding to the horizontal plates 111 on both sides of the base 1. The outer wall of the horizontal plate 111 is in sliding contact with the outer wall of the fixed frame 6 away from the rotating shaft 5. A plurality of positioning blocks 113 are fixed to the side position of the horizontal plate 111 toward the fixed frame 6. Positioning grooves 13 are provided at positions corresponding to the positioning blocks 113 on the side of the lower mold 2. The outer wall of the positioning block 113 is in sliding contact with the inner wall of the positioning groove 13. After the lower mold 2 is rotated into place by the motor 501 The electric push rod 10 is used to push the positioning frames 11 on both sides that originally extended outward toward the base 1, so that the horizontal plate 111 is against the position of the fixed frame 6 away from the rotating shaft 5, and the positioning blocks 113 on the two horizontal plates 111 are respectively inserted into the positioning grooves 13 on the sides of the two corresponding positions of the lower mold 2. On the one hand, the stability of the lower mold 2 above the rotating shaft 5 during the punching process is ensured to ensure the effectiveness of the punching, and the load at the position of the rotating shaft 5 is reduced to extend the service life of the equipment; on the other hand, by increasing the connection position between the two lower molds 2, the mechanical vibration generated by the punching of the lower mold 2 above the rotating shaft 5 is transmitted from the surrounding positions to the lower mold 2 below the rotating shaft 5, thereby improving the vibration dispersion and shedding effect of the debris on the surface of the lower mold 2 below the rotating shaft 5.

[0034] Example 2: Reference Figures 1-9 , a precision stamping die device, based on Example 1, a limiting cylinder 20 is fixed in the middle position of the inner wall on both sides of the base 1, the top and bottom ends of the limiting cylinder 20 are opened, a spring 21 is placed in the limiting cylinder 20, and a connecting block 19 connected to the spring 21 is provided at a position of the horizontal plate 111 close to the fixed frame 6. When the lower mold 2 is rotated and switched, the positioning frames 11 at both sides slide outward away from the lower mold 2. At this time, the connecting blocks 19 in the two horizontal plates 111 at the upper and lower positions of the positioning frame 11 are both in a position close to the inner wall of the base 1. At this time, the spring 21 is placed vertically; in the lower mold After the switching is completed, the positioning frame 11 moves inward to limit the lower mold 2. At this time, the middle part of the spring 2 17 is limited by the limiting cylinder 20, so that both ends of the spring 2 17 are stretched and bent toward the middle position of the base 1 to form a V-shaped structure, so that when the mechanical vibration generated by the upper lower mold 2 is transmitted to the lower lower mold 2, not only a vertical downward force but also a horizontal force is exerted, thereby improving the vibration cleaning effect on the surface of the lower mold 2 at the bottom; and the bent spring avoids weakening the vibration to prevent the vibration from being transmitted upward from the bottom too much and affecting the punching accuracy of the upper part.

[0035] The top of block 191 is fixed with block 21, and the cross section of block 212 and block 3 is larger than the cross section of groove 18. The cam 17 is pressed against the bottom of the mold 2 and the spring 17 is pulled back to move the cam 17 so that the cam 17 is in a position opposite to the top of the mold 2.

[0036] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A precision stamping die device, comprising a base (1), a lower die (2) and an upper die (4), wherein a hydraulic lifting rod (3) is connected between the outer wall of the base (1) and the upper die (4), and characterized in that: The base (1) is provided with a cavity with a top opening, and two lower molds (2) are provided in the base (1). The middle position of the base (1) is horizontally rotatably connected to a rotating shaft (5), one end of the rotating shaft (5) is connected to a motor (501), and two symmetrically arranged fixed frames (6) are fixed to the outer wall of the rotating shaft (5). The lower mold (2) is detachably installed on the outer wall of the fixed frame (6) away from the rotating shaft (5). A plurality of vertical cylinders (14) are installed between the two fixed frames (6), and two collision balls (15) are provided in the vertical cylinder (14). A spring (16) is connected between the two collision balls (15). The top and bottom ends of the vertical cylinder (14) are both opened. In a normal placement state, the outer walls of the two collision balls (15) are respectively in contact with the two fixed frames (6). Both sides of the base (1) A horizontally movable positioning frame (11) is provided, and a horizontally extending electric push rod (10) is connected between the positioning frame (11) and the outer wall of the base (1). The positioning frame (11) is provided with two horizontal plates (111), and a vertical plate (112) is fixed between the two horizontal plates (111). A through groove (12) is provided at positions corresponding to the horizontal plates (111) on both sides of the base (1). The outer wall of the horizontal plate (111) is in sliding contact with the outer wall of the fixed frame (6) away from the rotating shaft (5). A limiting cylinder (20) is fixed at the middle position of the inner wall on both sides of the base (1), and the top and bottom ends of the limiting cylinder (20) are both opened. A spring 2 (17) is placed in the limiting cylinder (20), and a connecting block (19) connected to the spring 2 (17) is provided at a position of the horizontal plate (111) close to the fixed frame (6).

2. A precision stamping die device according to claim 1, characterized in that: A detachably connected bottom box (8) is provided at the bottom end of the base (1), the bottom of the cavity in the base (1) is open, and the top of the bottom box (8) is open. A plurality of air injection tubes (9) for injecting air toward the lower mold (2) are fixed on the bottom box (8).

3. A precision stamping die device according to any one of claims 1 to 2, characterized in that: A plurality of positioning blocks (113) are fixed to the side of the horizontal plate (111) facing the fixed frame (6), and positioning grooves (13) are provided at positions on the side of the lower mold (2) corresponding to the positioning blocks (113), and the outer walls of the positioning blocks (113) are in sliding contact with the inner walls of the positioning grooves (13).

4. A precision stamping die device according to claim 3, characterized in that: A slide groove (18) is provided at a position corresponding to the horizontal plate (111) and the connecting block (19). The connecting block (19) is provided with a block 1 (191) slidably connected to the slide groove (18). The block 1 (191) slides in the slide groove (18) toward the two sides of the base (1). The bottom end of the block 1 (191) is fixed with a block 3 (193) installed with the spring 2 (17). The top end of the block 1 (191) is fixed with a block 2 (192). The cross sections of the block 2 (192) and the block 3 (193) are both larger than the cross section of the slide groove (18).

5. A precision stamping die device according to claim 4, characterized in that: A mounting frame (21) is fixed to the outside of the upper mold (4), mounting rings (22) are fixed to both sides of the mounting frame (21), a vertically extending movable rod (23) is slidably connected to the inner wall of the mounting ring (22), a spring three (24) is connected between the top end of the movable rod (23) and the mounting ring (22), and a pressure block (25) is fixed to the bottom end of the movable rod (23).

6. A precision stamping die device according to claim 5, characterized in that: The bottom of the pressing block (25) is configured as an inclined surface that is inclined downward in a direction away from the upper mold (4), and the top of the second block (192) located above the positioning frame (11) is configured as an inclined surface that is inclined upward in a direction toward the middle of the base (1).

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