Punching die

Abstract

The utility model relates to the technical field of dies, in particular to a punching die. Comprising an upper die and a lower die, a concave table is arranged on the top face of the lower die, a plurality of die holes are formed in the rear side of the concave table, a storage barrel is arranged above the middle of the concave table, and the distance between the bottom face of the storage barrel and the bottom face of the concave table is 1-1.5 times of the thickness of a blank plate; the rear side of the lower die is rotationally connected with a discharging mechanism, the discharging mechanism is provided with a plurality of inserting rods, the two sides of the discharging mechanism are provided with rotating arms, the upper die is provided with a plurality of punches, the two sides of the upper die are provided with vertical plates, the vertical plates are provided with long grooves, and the long grooves are communicated with the inserting rods. One end of the connecting rod is hinged to the rotating arm, a round rod is arranged at the other end of the connecting rod, located in the long groove and slidably connected with the long groove, and a groove used for containing the inserting rod is formed in the lower die. According to the utility model, a blank plate can be punched to obtain an intermediate plate, and the structure of the discharging mechanism is more ingenious.

Description

Technical Field

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

[0002] The PT-type adjustment plate is a commonly used electrical fitting with adjustable length. It consists of a faceplate and an intermediate plate, both of which are provided with multiple through-holes. After sliding the intermediate plate relative to the faceplate, bolts are simultaneously passed through the overlapping through-holes on the intermediate plate and the faceplate to fix the relative position of the two. Figure 6 The figure shows a common intermediate plate 5, which is used Figure 7 The blank plate 6 shown in FIG is obtained by punching. The present application provides a punching die to punch the blank plate 6 to obtain the intermediate plate 5. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a punching die in view of the above-mentioned technical deficiencies.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a punching die, comprising an upper die and a lower die, the top surface of the lower die is provided with a concave platform penetrating the front side thereof, the rear side of the concave platform is provided with a plurality of penetrating die holes, a storage barrel with upper and lower openings is provided above the middle part of the concave platform, the distance between the bottom surface of the storage barrel and the bottom surface of the concave platform is 1-1.5 times the thickness of the blank, a feeding mechanism is slidably provided on the front side of the lower die, and a feeding mechanism is provided on the feeding mechanism that can feed the material from the storage barrel A push plate passes through the bottom, and the rear side of the lower die is rotatably connected to the discharge mechanism, and a plurality of insertion rods are provided on the discharge mechanism, and rotating arms are provided on both sides of the discharge mechanism. A plurality of punches are provided on the upper die, and vertical plates are provided on both sides of the upper die. A long slot is provided on the vertical plate, one end of the connecting rod is hinged to the rotating arm, and a round rod is provided on the other end. The round rod is located in the long slot and is slidably connected to the long slot, and a groove for accommodating the insertion rod is provided on the lower die, and the bottom surface of the groove is lower than the bottom surface of the concave platform.

[0005] Preferably, pulling plates are provided on both sides of the feeding mechanism, rollers are provided at the rear ends of the pulling plates, and the bottom surface of the vertical plate is provided with a pushing inclined surface that can push the rollers to the rear side when the vertical plate descends.

[0006] Preferably, a first spring is provided between the feeding mechanism and the lower die.

[0007] Preferably, a second spring capable of resetting the discharge mechanism is provided between the rotating arm and the lower die.

[0008] Preferably, convex plates are provided on both sides of the rear side of the lower mold, and shaft holes are provided on the convex plates. The two ends of the discharge mechanism are rotatably connected to the two shaft holes respectively.

[0009] Preferably, the upper mold includes an upper mold plate and a pressure plate, the vertical plates are arranged on both sides of the upper mold plate, the punch is located on the bottom surface of the upper mold plate, the pressure plate is connected to the upper mold plate with limited sliding and a third spring is arranged between the two, and a through hole for passing the punch is provided on the pressure plate.

[0010] Preferably, guide columns are provided on the left and right sides of the top surface of the lower mold, and guide holes cooperating with the guide columns are provided on both sides of the upper mold plate.

[0011] The utility model has the following advantages: rotating arms are provided on both sides of the discharging mechanism, one end of the connecting rod is hinged to the rotating arm, and a round rod is provided at the other end; long grooves are provided on the vertical plates on both sides of the upper die; the round rods are located in the long grooves and are slidably connected to the long grooves; when the upper die descends, the discharging mechanism can be reset first; after punching is completed, when the upper die rises to a certain height, the discharging mechanism can be driven to unload; the structure of the discharging mechanism is relatively ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front axis side view of a punching die.

[0013] Figure 2 This is a rear axle side view of a punching die.

[0014] Figure 3 for Figure 2 Magnified view of point I in the middle.

[0015] Figure 4 Schematic diagram of the structure of the lower mold.

[0016] Figure 5 Schematic diagram of the structure of the upper mold.

[0017] Figure 6 Schematic diagram of the structure of the middle plate.

[0018] Figure 7 Schematic diagram of the blank structure.

[0019] In the figure: 1. Lower die; 11. Guide column; 12. Storage barrel; 13. Groove; 14. Die hole; 15. Convex plate; 16. Concave platform; 2. Feeding mechanism; 21. Push plate; 22. Pulling plate; 23. Roller; 3. Upper die; 31. Upper template; 311. Vertical plate; 312. Pushing slope; 313. Long groove; 314. Punch; 32. Pressing plate; 4. Discharging mechanism; 41. Insert rod; 42. Rotating arm; 43. Connecting rod; 431. Round rod; 5. Middle plate; 6. Blank plate. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0021] Specific implementation method: Figure 1-5 As shown, a punching die comprises an upper die 3 and a lower die 1. The top surface of the lower die 1 is provided with a concave platform 16 running through the front side thereof. The depth of the concave platform 16 is preferably less than the thickness of the blank 6. The width of the concave platform 16 is equal to the length of the blank 6. The rear side of the concave platform 16 is provided with a plurality of through die holes 14. The positions of the die holes 14 correspond to the positions of the through holes on the middle plate 5. A storage barrel 12 with upper and lower openings is provided above the middle of the concave platform 16. The length of the interior of the storage barrel 12 is The length of the blank 6 is equal to the width of the inside of the storage barrel 12, and the width of the inside of the storage barrel 12 is equal to the width of the blank 6. The height of the storage barrel 12 is much higher than the thickness of the blank 6, so that multiple blanks 6 can be stacked inside it. The distance between the bottom surface of the storage barrel 12 and the bottom surface of the concave platform 16 is 1-1.5 times the thickness of the blank 6. A feeding mechanism 2 is slidably provided on the front side of the lower mold 1. The feeding mechanism 2 is provided with a push plate 21 that can pass through the bottom of the storage barrel 12. The thickness of the push plate 21 is preferably slightly less than The thickness of the blank 6, the push plate 21 can push the blank 6 below the storage barrel 12 to contact the rear side of the concave platform 16, the rear side of the lower die 1 is rotatably connected to the discharge mechanism 4, the discharge mechanism 4 is provided with a plurality of insert rods 41, and the two sides of the discharge mechanism 4 are provided with rotating arms 42. The upper die 3 is provided with a plurality of punches 314, the position of the punch 314 corresponds to the position of the die hole 14, and the two sides of the upper die 3 are provided with vertical plates 311. 1 is provided with a long groove 313, which extends in the vertical direction. One end of the connecting rod 43 is hinged to the rotating arm 42, and the other end is provided with a round rod 431. The round rod 431 is located in the long groove 313 and is slidably connected to the long groove 313. The lower mold 1 is provided with a groove 13 for accommodating the insertion rod 41, and the bottom surface of the groove 313 is lower than the bottom surface of the concave platform 16. The bottom of the long groove 313 can push the round rod 431 to rise, thereby rotating the discharge mechanism 4, and then rotating the insertion rod 41.

[0022] The feeding mechanism 2 can be manually pushed to feed the material. However, to improve the degree of automation, it is preferably provided with a pulling plate 22 on both sides of the feeding mechanism 2. The rear end of the pulling plate 22 is provided with a roller 23. The bottom surface of the vertical plate 311 is provided with a pushing inclined surface 312 that can push the roller 23 backward when the pulling plate 22 descends. When the upper mold 3 descends to a certain height, the pushing inclined surface 312 contacts the roller 23. The upper mold 3 continues to descend, causing the roller 23 to move backward, thereby driving the pushing plate 21 to insert under the storage barrel 12 and push the bottommost blank 6 backward. When the upper mold 3 continues to descend, the roller 23 disengages from the pushing inclined surface 312 and contacts the rear side (vertical surface) of the vertical plate 311. The roller 23 does not continue to move backward but remains in this position. At this time, the pushing plate 21 pushes the blank 6 into contact with the rear side of the concave platform 16. The upper mold 3 continues to descend, and the punch 314 punches a through hole in the corresponding position of the blank 6.

[0023] After the punching is completed, the feeding mechanism 2 can be manually reset. However, in order to improve the degree of automation, it is preferred that a first spring is provided between the feeding mechanism 2 and the lower die 1, and the first spring is in a compressed state. After the punching is completed, the upper die 3 rises. When the roller 23 is disengaged from the rear side of the vertical plate 311 and contacts the push bevel 312, the roller 23 will move forward. The upper die 3 continues to rise so that the roller 23 is disengaged from the push bevel 312. The roller 23 will remain stationary. At this time, the push plate 21 is pulled out from the bottom of the storage barrel 12. After that, the upper die 3 continues to rise so that the bottom of the long groove 313 contacts the round rod 431. The upper die 3 continues to rise, and the discharging mechanism 4 will be driven to rotate through the connecting rod 43 and the rotating arm 42. The insert rod 41 rises from the groove 13 to remove the punched intermediate plate 5 from the lower die 1. When the next punching is performed, the upper mold 3 descends, and the insertion rod 41 falls and resets under the action of gravity. After resetting, the insertion rod 41 contacts the bottom surface of the groove 13 and is located below the bottom surface of the concave platform 16. In order to improve the reliability of the automatic reset of the discharge mechanism 4, it is preferably provided with a second spring between the rotating arm 42 and the lower mold 1 (the second spring is in a stretched state). The second spring pulls the rotating arm 42 to reset the discharge mechanism 4. After the discharge mechanism 4 is reset, the upper mold 3 continues to descend, and at this time relative sliding occurs between the round rod 431 and the long groove 313.

[0024] Preferably, convex plates 15 are provided on both sides of the rear side of the lower mold 1, and an axial hole is provided on the convex plate 15. The two ends of the discharge mechanism 4 are rotatably connected to the two axial holes respectively. When unloading, the insertion rod 41 is in an inclined state and its rear end is located on the rear side of the lower mold 1, and the middle plate 5 slides down along the insertion rod 41 and falls from the rear side of the lower mold 1.

[0025] Preferably, the upper die 3 comprises an upper die plate 31 and a pressure plate 32. The vertical plates 311 are disposed on either side of the upper die plate 31, and the punch 314 is located on the bottom surface of the upper die plate 31. The pressure plate 32 is in limited sliding connection with the upper die plate 31 (i.e., the distance between the two stops expanding when it reaches a certain value, at which point the pressure plate 32 can be lifted upward by the upper die plate 31, a common technique used in existing dies). A third spring (in a compressed state) is disposed between the two. The pressure plate 32 is provided with a through hole for the punch 314 to pass through. During punching, the pressure plate 32 first presses the blank 6, preventing deformation of the blank 6 during punching.

[0026] Preferably, guide columns 11 are provided on the left and right sides of the top surface of the lower die 1, and guide holes cooperating with the guide columns 11 are provided on both sides of the upper die plate 31, so that the punch 314 can be aligned with the die hole 14 without deviation.

[0027] When in use, this punching die is installed on the stamping equipment. First, multiple blanks 6 are stacked in the storage barrel 12. Under the action of gravity, the bottom blank 6 falls on the concave platform 16, and then the upper die 3 descends. During the descent of the upper die 3, the discharging mechanism 4 is reset first, and then the feeding mechanism 2 pushes the blank 6 into place, and then the punch 314 punches. After the punching is completed, the upper die 3 rises. During the ascent of the upper die 3, the feeding mechanism 2 is reset first, and then the discharging mechanism 4 rotates to complete the unloading, and then the upper die 3 descends to punch the next blank 6.

[0028] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A punching die, comprising an upper die (3) and a lower die (1), characterized in that: The top surface of the lower mold (1) is provided with a concave platform (16) passing through the front side thereof, the rear side of the concave platform (16) is provided with a plurality of through mold holes (14), a storage barrel (12) with upper and lower openings is provided above the middle of the concave platform (16), the distance between the bottom surface of the storage barrel (12) and the bottom surface of the concave platform (16) is 1-1.5 times the thickness of the blank (6), a feeding mechanism (2) is slidably provided on the front side of the lower mold (1), a pushing plate (21) capable of passing through the bottom of the storage barrel (12) is provided on the feeding mechanism (2), and a discharging mechanism (4) is rotatably connected to the rear side of the lower mold (1), and the discharging mechanism ( 4) is provided with a plurality of insertion rods (41), rotating arms (42) are provided on both sides of the discharging mechanism (4), a plurality of punches (314) are provided on the upper die (3), vertical plates (311) are provided on both sides of the upper die (3), a long groove (313) is provided on the vertical plates (311), one end of the connecting rod (43) is hinged to the rotating arm (42), and the other end is provided with a round rod (431), the round rod (431) is located in the long groove (313) and is slidably connected to the long groove (313), and a groove (13) for accommodating the insertion rod (41) and the bottom surface of which is lower than the bottom surface of the concave platform (16) is provided on the lower die (1).

2. A punching die according to claim 1, characterized in that: Pulling plates (22) are provided on both sides of the feeding mechanism (2), rollers (23) are provided at the rear ends of the pulling plates (22), and a pushing inclined surface (312) is provided on the bottom surface of the vertical plate (311) that can push the rollers (23) to the rear side when the vertical plate (311) descends.

3. A punching die according to claim 2, characterized in that: A first spring is provided between the feeding mechanism (2) and the lower die (1).

4. The punching die according to claim 1, characterized in that: A second spring capable of resetting the discharge mechanism (4) is provided between the rotating arm (42) and the lower die (1).

5. The punching die according to claim 1, characterized in that: Both sides of the rear side of the lower die (1) are provided with convex plates (15), and the convex plates (15) are provided with shaft holes. The two ends of the discharge mechanism (4) are rotatably connected to the two shaft holes respectively.

6. A punching die according to any one of claims 1 to 5, characterized in that: The upper mold (3) comprises an upper mold plate (31) and a pressing plate (32), the vertical plates (311) are arranged on both sides of the upper mold plate (31), the punch (314) is located on the bottom surface of the upper mold plate (31), the pressing plate (32) is connected to the upper mold plate (31) in a limited sliding manner, and a third spring is arranged between the two, and a through hole for passing the punch (314) is provided on the pressing plate (32).

7. The punching die according to claim 6, characterized in that: Guide columns (11) are provided on the left and right sides of the top surface of the lower mold (1), and guide holes matching the guide columns (11) are provided on both sides of the upper mold plate (31).

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