Quick die changing and locking mechanism for connector stamping and stamping die of quick die changing and locking mechanism

Abstract

The invention relates to the technical field of machining dies, in particular to a connector stamping rapid die changing locking mechanism and a stamping die thereof.The connector stamping rapid die changing locking mechanism comprises an upper die base and a lower die base, a lower die core is arranged in the lower die base, and the connector stamping rapid die changing locking mechanism is characterized in that guide assemblies are arranged on the upper die base and the lower die base; the guide assembly is used for guiding the upper die base and the lower die base during stamping; the pre-tightening assembly comprises a loading device and a clamping device; the stamping fastening assembly comprises a butt joint triggering device and a hydraulic reinforcing device; the quick release assembly comprises a pressing device, a hydraulic oil conveying device and a separating device; during stamping, the hydraulic reinforcing device is started through the butt joint trigger device, fixing of the clamping device to the mold core is enhanced in a dynamic reinforcing mode, and during separation, hydraulic oil discharged from the hydraulic reinforcing device is used for increasing the separation speed, so that the mold replacement speed is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of processing molds, and specifically to a rapid die-changing locking mechanism for connector stamping and its stamping die. Background Art

[0002] A stamping die includes an upper die base and a lower die base. The upper die base is connected with an upper die core, and the lower die base is connected with a lower die core. During stamping, the lower die base and the lower die core remain fixed, and the upper die core in the upper die base is driven by a stamping push rod to approach the lower die core to complete die closing.

[0003] In the field of connector stamping and forming, with the shortening of the product iteration cycle and the surge in the demand for multi-variety and small-batch production, the traditional die-changing method can no longer meet the requirements of high-efficiency manufacturing. In the process of replacing the die core of the existing stamping die, the manual bolt locking method is usually adopted, which requires a large amount of time cost, and problems such as the failure of the locking thread are likely to occur after long-term and high-intensity work. Summary of the Invention

[0004] The purpose of the present invention is to provide a rapid die-changing locking mechanism for connector stamping and its stamping die to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] On the one hand, a rapid die-changing locking mechanism for connector stamping is provided, which includes an upper die base and a lower die base. A lower die core is arranged in the lower die base, and;

[0007] a guiding component, which is used to guide the upper die base and the lower die base during stamping;

[0008] a pre-tightening component, which is arranged on the lower die base. The pre-tightening component includes a loading device and a clamping device. The loading device is used to drive the clamping device to clamp the lower die core;

[0009] a stamping fastening component, which includes a contact triggering device and a hydraulic reinforcement device. The contact triggering device is used to trigger and open the hydraulic reinforcement device when the upper die base and the lower die base are stamped. The hydraulic reinforcement device is used to further fix the clamping device by hydraulic pressure;

[0010] a quick-release component, which includes a pressing device, a hydraulic oil conveying device and a separating device. By pressing the pressing device, the hydraulic oil conveying device is used to start. The hydraulic oil conveying device is used to input the hydraulic oil in the hydraulic reinforcement device into the separating device, and the separating device is used to separate the clamping device and the lower die core from each other.

[0011] Preferably, the guiding component includes a guiding column and a guiding seat. The guiding column is arranged on the upper die base, and the guiding seat is arranged on the lower die base. During stamping, the guiding column arranged thereon will be inserted into the guiding seat.

[0012] Preferably, the loading device includes a loading motor, a loading lead screw, and a loading block. The loading motor is used to drive the loading lead screw to rotate. The loading block is connected to the loading lead screw. When the loading lead screw rotates, it will drive the loading block to move.

[0013] Preferably, the clamping device is arranged on the loading block. The clamping device includes a clamping block. The clamping block is of an L-shaped structure and is fixedly connected to the loading block.

[0014] Preferably, the contact triggering device includes a triggering block and a pressure sensor. The triggering block is arranged on the guiding column, and the pressure sensor is arranged inside the guiding seat. When the guiding column is inserted into the bottom of the guiding seat, the triggering block will press the pressure sensor.

[0015] Preferably, the lower die base is provided with an installation groove. An installation block is arranged in the installation groove. The loading motor is arranged on the installation block. The loading block is slidably connected to the installation block. The hydraulic reinforcement device includes a hydraulic push rod, a hydraulic cylinder, a hydraulic sensor, and a first electromagnetic directional control valve. The two ends of the hydraulic push rod are respectively connected to the loading block and the installation block. When the pressure sensor senses pressure, the hydraulic cylinder will input hydraulic oil into the hydraulic push rod. The hydraulic sensor is arranged at the connection part inside the hydraulic push rod and the hydraulic cylinder. The hydraulic sensor is used to detect the pressure inside the hydraulic push rod. The first electromagnetic directional control valve is used to control the connection between the hydraulic push rod and the hydraulic cylinder.

[0016] Preferably, the pressing device includes an unlocking switch. The unlocking switch is arranged on the lower die base. Pressing the unlocking switch is used to turn on the hydraulic oil conveying device.

[0017] Preferably, the hydraulic oil conveying device includes a connecting rod, a gas compression piston, a compression cylinder, a pneumatic push rod, an extrusion piston, and a pressure relief valve. The gas compression piston is connected to the guiding column through the connecting rod. The gas compression piston is movably connected to the compression cylinder. The compressed gas in the compression cylinder will be input into the pneumatic push rod through a hose. The pneumatic push rod is arranged in the hydraulic cylinder. The moving end of the pneumatic push rod is connected with the extrusion piston. The pressure relief valve is connected to the pneumatic push rod. When the air pressure in the pneumatic push rod exceeds the safety threshold of the pneumatic push rod, the pressure relief valve opens to release the excess air in the pneumatic push rod.

[0018] Preferably, the separation device includes a separation push rod, a vane pump, and a second electromagnetic directional valve. The separation push rod is interconnected with the hydraulic cylinder through the second electromagnetic directional valve. The vane pump is connected to the separation push rod and is used to pump the hydraulic oil in the hydraulic cylinder into the separation push rod. Both ends of the separation push rod are respectively connected to the mounting block and the mounting groove.

[0019] On the other hand, a stamping die is provided, which includes the above-mentioned connector stamping quick die change locking mechanism.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: When performing stamping, the present application activates the hydraulic reinforcement device through the contact trigger device, and strengthens the fixation of the die core by the clamping device through dynamic reinforcement, which can continuously ensure sufficient fastening effect during the stamping process, offset the problem of slight deviation of the die core caused by vibration and impact force, ensure the stamping accuracy, and use the hydraulic oil discharged from the hydraulic reinforcement device to accelerate the separation speed during separation, making the die change speed faster. It not only utilizes the hydraulic oil in multiple dimensions (strengthening during stamping and driving during separation), but also reduces the production downtime. Through the "dual-effect utilization of hydraulic energy" (strengthening during stamping / driving during separation), the present application realizes multi-angle optimization in terms of efficiency, safety, etc., and is particularly suitable for the precision stamping scenario of connectors with high requirements for production flexibility, precision, and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an axonometric structure schematic diagram of the present invention Figure 1 ;

[0022] Figure 2 is an axonometric structure schematic diagram of the present invention Figure 2 (Partial structure of the lower die base is shown in perspective);

[0023] Figure 3 is an axonometric structure schematic diagram of the present invention Figure 3 ;

[0024] Figure 4 is a schematic diagram of the connection structure of the guide post and the gas compression piston of the present invention;

[0025] Figure 5 is a schematic diagram of the position structure of the guide seat and the compression cylinder of the present invention;

[0026] Figure 6 is a schematic diagram of the position structure of the mounting block and the loading motor of the present invention;

[0027] Figure 7 is a schematic diagram of the position structure of the mounting block and the separation push rod of the present invention;

[0028] Figure 8 is a schematic diagram of the internal structure of the mounting block of the present invention;

[0029] Figure 9 Schematic diagram of the connection structure of each component in the hydraulic reinforcement device of the present invention;

[0030] Figure 10 Schematic diagram of the internal structure of the hydraulic cylinder of the present invention.

[0031] In the figure: 1 upper die base, 2 lower die base, 3 lower die core, 4 guide post, 5 guide seat, 6 loading motor, 7 loading lead screw, 8 loading block, 9 clamping block, 10 trigger block, 11 pressure sensor, 12 mounting block, 13 hydraulic push rod, 14 hydraulic cylinder, 15 hydraulic sensor, 16 electromagnetic directional control valve I, 17 unlocking switch, 18 connecting rod, 19 gas compression piston, 20 compression cylinder, 21 pneumatic push rod, 22 extrusion piston, 23 pressure relief valve, 24 separating push rod, 25 vane pump, 26 electromagnetic directional control valve II, 201 mounting groove. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-10 , the present invention provides a technical solution:

[0034] A rapid die change locking mechanism for connector stamping, as shown in the accompanying instructions Figure 1 , includes an upper die base 1 and a lower die base 2. A lower die core 3 is arranged in the lower die base 2, and the lower die base 2 is used to install the lower die core 3:

[0035] A guiding assembly, which is used to guide the upper die base 1 and the lower die base 2 during stamping;

[0036] A pre-tightening assembly, which is arranged on the lower die base 2. The pre-tightening assembly includes a loading device and a clamping device. The loading device is used to drive the clamping device to clamp the lower die core 3;

[0037] A stamping fastening assembly, which includes a contact triggering device and a hydraulic reinforcement device. The contact triggering device is used to trigger and open the hydraulic reinforcement device when the upper die base 1 and the lower die base 2 are stamped, and the hydraulic reinforcement device is used to further fix the clamping device by hydraulic pressure;

[0038] Quick-release component, the quick-release component includes a pressing device, a hydraulic oil conveying device, and a separating device. By pressing the pressing device, it is used to start the hydraulic oil conveying device. The hydraulic oil conveying device is used to input the hydraulic oil in the hydraulic reinforcement device into the separating device. The separating device is used to separate the clamping device and the lower die core 3 from each other.

[0039] The guiding component includes a guiding column 4 and a guiding seat 5. The guiding column 4 is fixedly connected to the upper die base 1, and the guiding seat 5 is fixedly connected to the lower die base 2. During stamping, the guiding column 4 arranged will be inserted into the guiding seat 5.

[0040] The loading device includes a loading motor 6, a loading lead screw 7, and a loading block 8. The loading motor 6 is a servo motor, so its rotation angle can be precisely controlled. The loading motor 6 is used to drive the loading lead screw 7 to rotate. The loading block 8 is connected to the loading lead screw 7. When the loading lead screw 7 rotates, it will drive the loading block 8 to move along the installation groove 201.

[0041] The clamping device is arranged on the loading block 8. The clamping device includes a clamping block 9. The clamping block 9 is used to clamp the lower die core 3 of the lower die base 2. The clamping block 9 is an L-shaped structure. The clamping block 9 is fixedly connected to the loading block 8. A rubber buffer block is arranged at the contact position between the clamping block 9 and the lower die core 3. The rubber buffer block is connected to the clamping block 9. The rubber buffer block is used to reduce the wear of the lower die core 3 caused by the direct contact between the clamping block 9 and the lower die core 3, thereby increasing the service life of the lower die core 3.

[0042] The contact triggering device includes a trigger block 10 and a pressure sensor 11. The trigger block 10 is fixedly connected to the end of the guiding column 4 away from the upper die base 1. The pressure sensor 11 is arranged inside the guiding seat 5. The pressure sensor 11 is used to detect the position of the trigger block 10. When the guiding column 4 is inserted into the bottom of the guiding seat 5, the trigger block 10 will press the pressure sensor 11. At this time, the hydraulic reinforcement device will perform hydraulic reinforcement on the loading block 8.

[0043] The lower die base 2 is provided with an installation groove 201. The installation groove 201 is used for installing the installation block 12 and also for restricting the movement direction of the loading block 8. An installation block 12 is arranged in the installation groove 201. The loading motor 6 is arranged on the installation block 12. The loading block 8 is slidably connected to the installation block 12. The hydraulic reinforcement device includes a hydraulic push rod 13, a hydraulic cylinder 14, a hydraulic sensor 15 and a first electromagnetic directional control valve 16. The two ends of the hydraulic push rod 13 are respectively connected to the loading block 8 and the installation block 12. When there is no hydraulic oil inside the hydraulic push rod 13, the hydraulic push rod 13 is in a freely movable state. At this time, the hydraulic push rod 13 does not support the loading block 8. The hydraulic push rod 13 is provided with a gas discharge valve. The gas discharge valve only allows air flow through and does not allow liquid to pass through. The gas discharge valve is used to adjust the air pressure in the hydraulic push rod 13 in the freely movable state of the hydraulic push rod 13. The gas discharge valve is a prior art, and the specific model can be purchased according to the actual situation. When the pressure sensor 11 senses pressure, the hydraulic cylinder 14 will input hydraulic oil into the hydraulic push rod 13 through the first electromagnetic directional control valve 16. The hydraulic sensor 15 is arranged at the connection part inside the hydraulic push rod 13 and the hydraulic cylinder 14. The hydraulic sensor 15 is used to detect the pressure inside the hydraulic push rod 13. The first electromagnetic directional control valve 16 is used to control the connection between the hydraulic push rod 13 and the hydraulic cylinder 14 and control the flow direction of the hydraulic oil.

[0044] The pressing device includes an unlocking switch 17. The unlocking switch 17 is a self-resetting switch with Bluetooth function. The unlocking switch 17 is arranged on the lower die base 2. Pressing the unlocking switch 17 is used to turn on the hydraulic oil conveying device.

[0045] The hydraulic oil conveying device includes a connecting rod 18, a gas compression piston 19, a compression cylinder 20, a pneumatic push rod 21, an extrusion piston 22 and a pressure relief valve 23. The gas compression piston 19 is connected to the guide post 4 through the connecting rod 18. The gas compression piston 19 is movably connected to the compression cylinder 20. Therefore, when the guide post 4 moves, the gas compression piston 19 will move along the compression cylinder 20. The compressed gas in the compression cylinder 20 will be input into the pneumatic push rod 21 through a hose. The pneumatic push rod 21 is arranged in the hydraulic cylinder 14. The moving end of the pneumatic push rod 21 is connected with an extrusion piston 22. The pressure relief valve 23 is connected to the pneumatic push rod 21. When the air pressure in the pneumatic push rod 21 exceeds the safety threshold of the pneumatic push rod 21, the pressure relief valve 23 opens to release the excess air in the pneumatic push rod 21.

[0046] The separation device includes a separation push rod 24, a vane pump 25 and a second electromagnetic directional control valve 26. The separation push rod 24 is interconnected with the hydraulic cylinder 14 through the second electromagnetic directional control valve 26. The vane pump 25 is connected to the separation push rod 24. The vane pump 25 is used to pump the hydraulic oil in the hydraulic cylinder 14 into the separation push rod 24. The two ends of the separation push rod 24 are respectively connected to the installation block 12 and the installation groove 201.

[0047] Working principle: When in use, each loading motor 6 drives the loading lead screw 7 to move. When the loading lead screw 7 moves, it drives the clamping block 9 through the loading block 8 to clamp and fix the lower die core 3 on the lower die base 2 in multiple directions.

[0048] During the stamping process, the guide post 4 will be inserted into the guide seat 5. When the guide post 4 is inserted into the bottom of the guide seat 5, the trigger block 10 will press the pressure sensor 11, and the first electromagnetic directional valve 16 will be opened (during the process of the guide post 4 reciprocally inserting into the guide seat 5, the connecting rod 18 will drive the gas compression piston 19 to move along the compression cylinder 20. The compressed gas in the compression cylinder 20 will be input into the pneumatic push rod 21 through the hose, and the extrusion piston 22 will drive the hydraulic oil into the hydraulic push rod 13 under the drive of the pneumatic push rod 21). Through continuous stamping, the hydraulic oil in the hydraulic push rod 13 will increase, so as to support the loading block 8, thus solving the problem that the loading block 8 deviates due to mechanical vibration and other reasons after long-term use. When the hydraulic sensor 15 detects that the hydraulic pressure in the hydraulic push rod 13 is too high, the first electromagnetic directional valve 16 will be closed.

[0049] When it is necessary to replace the lower die core 3, press the unlocking switch 17. At this time, the loading motor 6 drives the clamping block 9 away from the lower die core 3, and at the same time, the first electromagnetic directional valve 16 switches the flow direction (the hydraulic oil can only flow unidirectionally from the hydraulic push rod 13 into the hydraulic oil cylinder 14). The vane pump 25 pumps the hydraulic oil into the separating push rod 24. When the separating push rod 24 extends, it will jack up the mounting block 12 to quickly separate the lower die core 3 and the clamping block 9.

[0050] After the separation is completed, the loading block 8 will drive the hydraulic push rod 13 to continue moving until it is in a compressed state, and the pressure relief valve 23 is fully opened to discharge all the air in the pneumatic push rod 21. The second electromagnetic directional valve 26 is opened (the hydraulic oil can enter the hydraulic oil cylinder 14 through the separating push rod 24). At this time, the hydraulic oil returns from the hydraulic push rod 13 and the separating push rod 24 to the hydraulic oil cylinder 14.

[0051] 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 rapid die change locking mechanism for connector stamping, comprising an upper die base and a lower die base, wherein a lower die core is arranged in the lower die base, and is characterized in that, The upper die base and the lower die base are provided with: A guide assembly, the guide assembly is used to guide the upper die seat and the lower die seat during stamping; A pre-tightening assembly, the pre-tightening assembly is arranged on the lower die base, the pre-tightening assembly comprises a loading device and a clamping device, the loading device is used to drive the clamping device to clamp the lower die core; A stamping and fastening assembly, the stamping and fastening assembly comprising a docking trigger device and a hydraulic reinforcement device, the docking trigger device is used to trigger the opening of the hydraulic reinforcement device when the upper die base and the lower die base are stamping, and the hydraulic reinforcement device is used to further fix the clamping device through hydraulic pressure; A quick-release assembly, the quick-release assembly comprising a pressing device, a hydraulic oil delivery device and a separation device, wherein the pressing device is used to start the hydraulic oil delivery device, the hydraulic oil delivery device is used to input the hydraulic oil in the hydraulic reinforcement device into the separation device, and the separation device is used to separate the clamping device and the lower mold core from each other.

2. The stamping quick die change locking mechanism of a connector according to claim 1, characterized in that: The guide assembly includes a guide column and a guide seat. The upper die seat is provided with the guide column, and the lower die seat is provided with the guide seat. When stamping is performed, the guide column is inserted into the guide seat.

3. The quick die change locking mechanism for connector stamping according to claim 2, characterized in that: The loading device includes a loading motor, a loading screw and a loading block. The loading motor is used to drive the loading screw to rotate. The loading block and the loading screw are connected to each other. When the loading screw rotates, it drives the loading block to move.

4. A quick die change locking mechanism for connector stamping according to claim 3, characterized in that: The clamping device is arranged on the loading block, and the clamping device comprises a clamping block. The clamping block is an L-shaped structure, and the clamping block is fixedly connected to the loading block.

5. A rapid die change locking mechanism for connector stamping according to claim 4, characterized in that: The docking trigger device includes a trigger block and a pressure sensor. The trigger block is arranged on the guide column, and the pressure sensor is arranged inside the guide seat. When the guide column is inserted into the bottom of the guide seat, the trigger block presses the pressure sensor.

6. The quick die change locking mechanism for connector stamping according to claim 5, wherein: The lower die base is provided with an installation groove, a installation block is arranged in the installation groove, the loading motor is arranged on the installation block, the loading block is slidably connected to the installation block, the hydraulic reinforcement device comprises a hydraulic push rod, a hydraulic cylinder, a hydraulic sensor and an electromagnetic reversing valve, the two ends of the hydraulic push rod are respectively connected to the loading block and the installation block, when the pressure sensor senses pressure, the hydraulic cylinder will input hydraulic oil into the hydraulic push rod, the hydraulic sensor is arranged at the connection between the hydraulic push rod and the hydraulic cylinder, the hydraulic sensor is used to detect the pressure inside the hydraulic push rod, and the electromagnetic reversing valve is used to control the connection between the hydraulic push rod and the hydraulic cylinder.

7. A quick die change locking mechanism for connector stamping according to claim 6, characterized in that: The pressing device includes an unlocking switch, which is arranged on the lower die base and is used to open the hydraulic oil delivery device by pressing the unlocking switch.

8. A quick die change locking mechanism for connector stamping according to claim 7, characterized in that: The hydraulic oil conveying device includes a connecting rod, a gas compression piston, a compression cylinder, a pneumatic push rod, an extrusion piston and a pressure relief valve. The gas compression piston is connected to the guide column through the connecting rod. The gas compression piston is movably connected to the compression cylinder. The compressed gas in the compression cylinder is input into the pneumatic push rod through a hose. The pneumatic push rod is arranged in the hydraulic oil cylinder. The moving end of the pneumatic push rod is connected with the extrusion piston. The pressure relief valve is connected to the pneumatic push rod. When the air pressure in the pneumatic push rod exceeds the safety threshold of the pneumatic push rod, the pressure relief valve opens to release the excess air in the pneumatic push rod.

9. A quick die change locking mechanism for connector stamping according to claim 8, characterized in that: The separation device includes a separation push rod, a vane pump and a solenoid directional valve II. The separation push rod is interconnected with the hydraulic oil cylinder through the solenoid directional valve II. The vane pump is connected to the separation push rod. The vane pump is used to pump the hydraulic oil in the hydraulic oil cylinder into the separation push rod. The two ends of the separation push rod are respectively connected to the mounting block and the mounting groove.

10. A stamping die, characterized in that: It includes the connector stamping quick die change locking mechanism according to any one of claims 1-9.

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