Stamping die

Abstract

The utility model discloses a stamping die which comprises a top die and a bottom die, the top die is provided with a stamping assembly, the stamping assembly comprises a punching mechanism and a driving mechanism, and the driving mechanism is arranged on the top side of the top die. When the improved stamping die is used, the driving mechanism firstly drives the top die and the bottom die to be closed to clamp and limit a circuit board, and then drives the punching mechanism to punch the circuit board, so that the circuit board is prevented from being deformed and damaged due to collision of foreign objects, and when the driving mechanism drives the top die and the bottom die to be separated, the circuit board is prevented from being damaged. The synchronous driving cleaning mechanism sucks waste cut off from the circuit board into the bottom die to be stored, the waste cut off from the circuit board cannot fall onto the bottom die, waste collection is facilitated, meanwhile, cleaning operation of the bottom die is avoided, stamping operation of the circuit board can be continuously conducted almost without cleaning of the bottom die, and the stamping efficiency of the circuit board is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a stamping die. Background Art

[0002] Circuit boards, also known as printed circuit boards, are an important component of electronic devices. During the production process of circuit boards, stamping dies are required to punch or cut the circuit boards to form complete and separate circuit board products.

[0003] During the punching process of the existing circuit board, some of the cut circuit board waste is easy to adhere to the top die, so that the circuit board waste is easy to fall onto the bottom die. The operator needs to sweep the circuit board waste on the bottom die before continuing to punch the subsequent circuit boards, which reduces the stamping efficiency of the circuit board. Utility Model Content

[0004] The purpose of the utility model is to provide a stamping die so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stamping die, comprising a top die and a bottom die, the top die is provided with a stamping assembly, the stamping assembly comprises a punching mechanism and a driving mechanism, the driving mechanism is arranged on the top side of the top die, the punching mechanism is arranged in the top die, piston cylinders are fixedly installed through the four corners of the top side of the top die, a first piston rod is slidably installed in the piston cylinder, the bottom end of the first piston rod is inserted into the bottom die and fixedly connected to the bottom die, and a cleaning mechanism is provided in the bottom die and the first piston rod.

[0006] Preferably, the driving mechanism includes a rectangular shell, which is fixedly mounted at the middle position of the top side of the top mold, and a diversion groove is opened in the top mold. The interior of the piston cylinder is connected with the interior of the diversion groove through a connecting pipe, and the connecting pipe is located below the plug plate of the first piston rod. An air pump is provided in the rectangular shell, and the top opening of the air pump is fixedly passed through the shell wall of the rectangular shell.

[0007] Preferably, a pressure-limiting valve is provided on the top side of the top mold, and the bottom end of the pressure-limiting valve is inserted into the diversion groove and fixedly connected to the top mold, and the top end of the pressure-limiting valve is gap-matched with the air pump.

[0008] Preferably, the cleaning mechanism comprises a placement groove with a T-shaped cross-section, the placement groove is opened on the bottom side of the bottom mold, the top side of the bottom mold is provided with a mounting groove, and a plurality of punched holes are opened in the mounting groove.

[0009] Preferably, the punching mechanism includes a plurality of second piston rods, a circular hole with a cross-shaped cross-section is opened at the position corresponding to the punching hole on the bottom side of the top mold, and the second piston rod is slidably installed in the corresponding circular hole, the interior of the circular hole is connected to the interior of the diversion groove, and the bottom side of the second piston rod is an arc-shaped setting that bulges from the outer ring edge to the center position.

[0010] Preferably, a connecting hole is provided in the first piston rod, and the interior of the connecting hole is communicated with the interior of the placement groove, a one-way valve is provided on the outer peripheral side of the first piston rod, and the air inlet end of the one-way valve is inserted into the corresponding connecting hole and fixedly connected to the first piston rod, the exhaust end of the one-way valve is coplanar with the outer peripheral wall of the first piston rod, and a sealing plate is fixedly installed in the bottom end opening of the placement groove by bolts.

[0011] The utility model has the following beneficial effects:

[0012] When the improved stamping die is in use, the driving mechanism first drives the top die and the bottom die to close to clamp and limit the circuit board, and then drives the punching mechanism to punch the circuit board, thereby preventing the circuit board from being deformed and damaged due to the resistance of foreign objects. When the driving mechanism drives the top die and the bottom die to separate, the cleaning mechanism is synchronously driven to suck the waste cut from the circuit board into the bottom die for storage. The waste cut from the circuit board will not fall onto the bottom die, and waste collection is convenient. At the same time, the cleaning operation of the bottom die is avoided, so that the bottom die almost does not need to be cleaned to continuously perform the stamping operation of the circuit board, thereby improving the stamping efficiency of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments 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.

[0014] Figure 1 It is an overall schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the top mold and the rectangular shell of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the top mold of the utility model;

[0017] Figure 4 It is a schematic diagram of the internal structure of the piston cylinder and part of the first piston rod of the utility model;

[0018] Figure 5 It is a schematic diagram of the overall structure of the bottom mold and the first piston rod of the utility model;

[0019] Figure 6 It is a schematic diagram of the internal structure of the bottom mold of the utility model.

[0020] In the figure: 1. top die; 2. bottom die; 3. stamping assembly; 31. driving mechanism; 311. rectangular shell; 312. diverter slot; 313. connecting pipe; 314. air pump; 315. pressure limiting valve; 32. punching mechanism; 321. round hole; 322. second piston rod; 33. piston cylinder; 34. first piston rod; 4. cleaning mechanism; 41. placement slot; 42. installation slot; 43. punching hole; 44. connecting hole; 45. one-way valve; 46. sealing plate. DETAILED DESCRIPTION

[0021] In order to make the technical solution and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The utility model provides a technical solution: Figure 1-6 The utility model discloses a stamping die, including a top die 1 and a bottom die 2. A stamping assembly 3 is provided on the top die 1. The stamping assembly 3 includes a punching mechanism 32 and a driving mechanism 31. The driving mechanism 31 is arranged on the top side of the top die 1, and the punching mechanism 32 is arranged in the top die 1. A piston cylinder 33 is fixedly installed at the four corners of the top side of the top die 1. A first piston rod 34 is slidably installed in the piston cylinder 33. The bottom end of the first piston rod 34 is inserted into the bottom die 2 and fixedly connected to the bottom die 2. A cleaning mechanism 4 is provided in the bottom die 2 and the first piston rod 34.

[0023] In this embodiment, when the improved stamping die is used, the operator first places the circuit board on the bottom die 2, and then the driving mechanism 31 drives the top die 1 to move down and contact with the bottom die 2, so that the top die 1 and the bottom die are closed on both sides of the circuit board to clamp and limit the circuit board, so that the circuit board remains in a stable and straight state, and then the driving mechanism 31 drives the punching mechanism 32 to perform a punching operation 43 on the circuit board. After the stamping operation of the circuit board is completed, the driving mechanism 31 drives the top die 1 to move up and separate from the bottom die 2, and then drives the cleaning mechanism to suck the waste cut off the circuit board into the bottom die 2 for storage. At this time, the stamped circuit board can be directly removed from the bottom die 2, and a new circuit board can be replaced to continuously perform the stamping operation of the circuit board.

[0024] In a further preferred embodiment of the present invention, Figure 2 and Figure 4As shown, the driving mechanism 31 includes a rectangular shell 311, which is fixedly mounted at the middle position of the top side of the top mold 1. A diverter groove 312 is opened in the top mold 1. The interior of the piston cylinder 33 is connected to the interior of the diverter groove 312 through a connecting pipe 313, and the connecting pipe 313 is located below the plug plate of the first piston rod 34. An air pump 314 is arranged in the rectangular shell 311, and the top opening of the air pump 314 is fixedly penetrated through the shell wall of the rectangular shell 311.

[0025] In this embodiment, when the top mold 1 and the bottom mold 2 are closed, the air pump 314 is started to suck a specific amount of gas from the outside into the rectangular shell 311. The gas entering the rectangular shell 311 first flows into the piston cylinder 33 through the connecting pipe 313, and the connecting pipe 313 guides the gas into the piston cylinder 33. As the air pressure in the opening of the piston cylinder 33 increases, the first piston rod 34 can be pushed into the piston cylinder 33 synchronously, thereby driving the top mold 1 to move downward, so that the top mold 1 contacts the bottom mold, and then the top mold 1 and the bottom mold are closed from both sides of the circuit board to clamp and limit the circuit board, so that the circuit board remains in a stable and straight state;

[0026] When the top mold 1 is separated from the bottom mold, the air pump 314 extracts the gas injected into the rectangular shell 311. At this time, the gas in the piston cylinder 33 continues to flow into the rectangular shell 311 through the connecting pipe 313, so that the first piston rod 34 retracted into the piston cylinder 33 is pulled out again through the negative pressure cavity in the opening of the piston cylinder 33, and the top mold 1 is continuously separated from the bottom mold.

[0027] It should be noted that a sealing ring is installed in the cylinder wall of the open end of the piston cylinder 33 to seal the gap between the first piston rod 34 and the inner wall of the opening of the piston cylinder 33 .

[0028] In a further preferred embodiment of the present invention, Figure 2 As shown, a pressure limiting valve 315 is provided on the top side of the top mold 1, and the bottom end of the pressure limiting valve 315 is inserted into the diverter groove 312 and fixedly connected to the top mold 1, and the top end of the pressure limiting valve 315 is gap-matched with the air pump 314;

[0029] In this embodiment, after the top mold 1 and the bottom mold complete the clamping and limiting of the circuit board, the top mold 1 cannot continue to move downward due to the mutual interference between the top mold 1 and the circuit board and the mutual interference between the circuit board and the mounting groove 42, and the air pressure in the piston cylinder 33 continues to increase, so that the pressing force of the top mold 1 on the circuit board continues to increase, and the top mold 1 cooperates with the bottom mold to clamp and limit the circuit board. At the same time, as the air pressure in the rectangular shell 311 continues to increase, the pressure difference at both ends of the pressure limiting valve 315 also continues to increase. When the pressure difference at both ends of the pressure limiting valve 315 reaches the threshold, the pressing force of the top mold 1 on the circuit board reaches the threshold;

[0030] When the pressure difference at both ends of the pressure limiting valve 315 reaches a threshold, the gas subsequently injected into the rectangular shell 311 automatically flows into the diversion groove 312 through the pressure limiting valve 315, and the operator does not need to perform other operations, which facilitates the use of the device.

[0031] In a further preferred embodiment of the present invention, Figure 5 and Figure 6 As shown, the cleaning mechanism 4 includes a placement groove 41 with a T-shaped cross section, the placement groove 41 is opened on the bottom side of the bottom mold 2, the top side of the bottom mold 2 is opened with a mounting groove 42, and a plurality of punching holes 43 are opened in the mounting groove 42;

[0032] In this embodiment, when the circuit board is placed on the bottom mold 2, the circuit board is directly inserted into the placement groove 41. Due to the mutual interference between the circuit board and the inner wall of the placement groove 41, the circuit board is stably placed at a specific position on the base, so that the punching hole 43 is aligned with the specific position on the circuit board.

[0033] In a further preferred embodiment of the present invention, Figure 3 As shown, the punching mechanism 32 includes a plurality of second piston rods 322. A circular hole 321 having a cross-shaped cross section is provided at the bottom side of the top die 1 at a position corresponding to the punching hole 43. The second piston rod 322 is slidably mounted in the corresponding circular hole 321. The interior of the circular hole 321 communicates with the interior of the diverter groove 312. The bottom side of the second piston rod 322 is an arc-shaped arrangement that bulges from the outer ring edge to the center position.

[0034] In the present embodiment, as the gas flows into the diverter groove 312, the pressure in the diverter groove 312 gradually increases, and the thrust of the gas in the diverter groove 312 on the second piston rod 322 also gradually increases, thereby pushing the second piston rod 322 out of the circular hole 321 and inserting it into the punching hole 43. In addition, through the mutual interference between the sharp outer ring edge of the second piston rod 322 and the outer ring edge of the punching hole 43, a portion of a specific size is cut from a specific position on the circuit board, thereby forming a hole of a corresponding shape on the circuit board. The operator does not need to perform other operations, which facilitates the use of the device.

[0035] In a further preferred embodiment of the present invention, Figure 4 and Figure 6 As shown, a connecting hole 44 is opened in the first piston rod 34, and the interior of the connecting hole 44 is communicated with the interior of the placement groove 41, a one-way valve 45 is provided on the outer peripheral side of the plug rod of the first piston rod 34, and the air inlet end of the one-way valve 45 is inserted into the corresponding connecting hole 44 and fixedly connected to the first piston rod 34, the exhaust end of the one-way valve 45 is coplanar with the outer peripheral wall of the plug rod of the first piston rod 34, and a sealing plate 46 is fixedly installed in the bottom end opening of the placement groove 41 by bolts;

[0036] In this embodiment, when the gas in the piston cylinder 33 flows into the rectangular shell 311, part of the gas in the placement groove 41 also flows into the rectangular shell 311 through the connecting hole 44 and the one-way valve 45, thereby forming a negative pressure chamber in the placement groove 41. At this time, a pressure difference is formed between the upper and lower ends of the punching hole 43, and the remaining gas between the top mold 1 and the circuit board flows into the placement groove 41 through the punching hole 43, so that the waste circuit board cut from the punching hole 43 can be sucked into the placement groove 41. The waste entering the placement groove 41 falls directly onto the sealing plate 46 due to its own gravity and is stored in the placement groove 41.

[0037] Working principle: When the improved stamping die is used, the operator first inserts the circuit board into the installation groove 42, and then the air pump 314 is started to suck a specific amount of external gas into the rectangular shell 311. The gas entering the rectangular shell 311 first flows into the piston cylinder 33 through the connecting pipe 313, and due to the obstruction of the one-way valve 45, the gas injected into the piston cylinder 33 pushes the first piston rod 34 into the piston cylinder 33, thereby pushing the top mold 1 toward the bottom mold until the top mold 1 contacts the circuit board. At this time, due to the mutual conflict between the top mold 1 and the circuit board and the mutual conflict between the circuit board and the installation groove 42, the top mold 1 cannot continue to move down, and the air pressure in the piston cylinder 33 continues to increase, so that the pressing force of the top mold 1 on the circuit board continues to increase, and the top mold 1 cooperates with the bottom mold to clamp and limit the circuit board. At the same time, as the air pressure in the rectangular shell 311 continues to increase, the pressure difference at both ends of the pressure limiting valve 315 also continues to increase. When the pressure difference at both ends of the pressure limiting valve 315 reaches the threshold, the pressing force of the top mold 1 on the circuit board reaches the threshold;

[0038] After the pressure difference at both ends of the pressure limiting valve 315 reaches the threshold, the gas subsequently injected into the rectangular shell 311 passes through the pressure limiting valve 315 and flows into the diverter groove 312, so that the pressure in the diverter groove 312 gradually increases. As the pressure in the diverter groove 312 gradually increases, the thrust of the gas in the diverter groove 312 on the second piston rod 322 also gradually increases, thereby pushing the second piston rod 322 out of the circular hole 321 and inserting it into the punching hole 43. The sharp outer ring edge of the second piston rod 322 and the outer ring edge of the punching hole 43 are mutually conflicted, and a portion of a specific size is cut from a specific position on the circuit board, thereby forming a hole of a corresponding shape on the circuit board.

[0039] After the punching operation 43 of the circuit board is completed, the air pump 314 is started to extract the gas injected into the rectangular shell 311. At this time, the gas in the piston cylinder 33 continues to flow into the rectangular shell 311 through the connecting pipe 313, so that the first piston rod 34 retracted into the piston cylinder 33 is pulled out again through the negative pressure cavity in the opening of the piston cylinder 33, and the top mold 1 is continuously separated from the bottom mold;

[0040] When the gas in the piston cylinder 33 flows into the rectangular shell 311, part of the gas in the placement groove 41 also flows into the rectangular shell 311 through the connecting hole 44 and the one-way valve 45, so that a negative pressure chamber is formed in the placement groove 41. At this time, a pressure difference is formed between the upper and lower ends of the punching hole 43, and the remaining gas between the top mold 1 and the circuit board flows into the placement groove 41 through the punching hole 43, so that the circuit board waste cut from the punching hole 43 can be sucked into the placement groove 41. The waste entering the placement groove 41 directly falls onto the sealing plate 46 due to its own gravity and is stored in the placement groove 41.

[0041] As the air pressure in the rectangular shell 311 continues to decrease, the pressure difference at both ends of the pressure limiting valve 315 gradually decreases, so that part of the gas in the circular hole 321 continues to flow into the rectangular shell 311, thereby re-sucking the second piston rod 322 into the circular hole 321 for storage;

[0042] After the punching operation 43 is completed on the circuit board, the circuit board can be directly taken out from the installation slot 42. At this time, the punching process 43 of the circuit board can be continued by replacing the circuit board again according to the above.

[0043] The bolts on the sealing plate 46 are screwed out at a fixed time, so that the sealing plate 46 can be taken out from the placement groove 41 , and the circuit board waste in the placement groove 41 can be taken out from the opening of the placement groove 41 .

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A stamping die, comprising a top die (1) and a bottom die (2), characterized in that: The top die (1) is provided with a punching assembly (3), the punching assembly (3) comprising a punching mechanism (32) and a driving mechanism (31), the driving mechanism (31) being arranged on the top side of the top die (1), the punching mechanism (32) being arranged inside the top die (1), piston cylinders (33) being fixedly installed and penetrated at the four corners of the top side of the top die (1), a first piston rod (34) being slidably installed inside the piston cylinder (33), the bottom end of the first piston rod (34) being inserted into the bottom die (2) and fixedly connected to the bottom die (2), a cleaning mechanism (4) being arranged in both the bottom die (2) and the first piston rod (34).

2. A stamping die according to claim 1, characterized in that: The driving mechanism (31) comprises a rectangular shell (311), the rectangular shell (311) is fixedly mounted at the middle position of the top side of the top mold (1), a diversion groove (312) is opened in the top mold (1), the interior of the piston cylinder (33) is connected with the interior of the diversion groove (312) through a connecting pipe (313), and the connecting pipe (313) is located below the plug plate of the first piston rod (34), an air pump (314) is arranged in the rectangular shell (311), and the top end opening of the air pump (314) is fixedly penetrated through the shell wall of the rectangular shell (311).

3. A stamping die according to claim 2, characterized in that: A pressure limiting valve (315) is provided on the top side of the top mold (1), and the bottom end of the pressure limiting valve (315) is inserted into the diversion groove (312) and fixedly connected to the top mold (1), and the top end of the pressure limiting valve (315) is clearance-matched with the air pump (314).

4. A stamping die according to claim 3, characterized in that: The cleaning mechanism (4) comprises a placement groove (41) with a T-shaped cross section, the placement groove (41) is provided on the bottom side of the bottom mold (2), the top side of the bottom mold (2) is provided with a mounting groove (42), and a plurality of punching holes (43) are provided in the mounting groove (42).

5. A stamping die according to claim 4, characterized in that: The punching mechanism (32) comprises a plurality of second piston rods (322). A circular hole (321) having a cross-shaped cross section is provided at a position corresponding to the punching hole (43) on the bottom side of the top die (1). The second piston rod (322) is slidably mounted in the corresponding circular hole (321). The interior of the circular hole (321) is communicated with the interior of the diverter groove (312). The bottom side of the second piston rod (322) is in the shape of an arc surface that bulges from the outer ring edge toward the center position.

6. A stamping die according to claim 5, characterized in that: A connecting hole (44) is provided in the first piston rod (34), and the interior of the connecting hole (44) is communicated with the interior of the placement groove (41); a one-way valve (45) is provided on the outer peripheral side of the plug rod of the first piston rod (34), and the air inlet end of the one-way valve (45) is inserted into the corresponding connecting hole (44) and fixedly connected to the first piston rod (34); the air outlet end of the one-way valve (45) is coplanar with the outer peripheral wall of the plug rod of the first piston rod (34); and a sealing plate (46) is fixedly installed in the bottom end opening of the placement groove (41) by bolts.

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