Stamping die with stamping head capable of being replaced quickly

Abstract

The utility model relates to the technical field of stamping dies, and discloses a stamping die with a quickly-replaceable stamping head, which comprises a base, and a lower die plate is mounted at the top of the base; a supporting seat is fixed on the base, and a pressing plate is slidably mounted on the supporting seat; an upper template is arranged above the pressing plate, and a hydraulic cylinder is fixed on the upper template; a punching head is mounted at the bottom of the telescopic shaft of the hydraulic cylinder, penetrates through the pressing plate and is in sliding fit with the pressing plate; a power supporting assembly is arranged between the upper die plate and the pressing plate and is in transmission connection with the upper die plate. An oil applying ring is fixed on the pressing plate, sleeves the punching head and is in sliding fit with the punching head; an oil tank and an oiling mechanism are installed on the upper die plate, and the oiling mechanism is connected with the oiling ring and the oil tank and is in transmission fit with a telescopic shaft of the hydraulic cylinder. The oil applying mechanism is connected with the oil tank and the oil applying ring, meanwhile, the oil applying mechanism applies oil to the punching head through stretching and retracting of the telescopic shaft of the hydraulic cylinder, manual oil applying is not needed, the automation degree is high, and the punching efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a stamping die with a quick-change stamping head. Background Technology

[0002] A stamping die is a special piece of equipment used in cold stamping to process materials into parts. Stamping applies pressure to materials to cause them to separate or undergo plastic deformation. Due to the different shapes of the products, the stamping die head and template need to be replaced. At the same time, when using the stamping die head, some stamping die heads need to be coated with lubricating oil or other protective agents to ensure the service life of the stamping die head.

[0003] The stamping die with quick-change die head, as described in announcement number CN221935162U, includes a mounting rod, a mounting plate connected to the top of the mounting rod, multiple mounting holes through the top of the mounting plate, an access groove at the center of the bottom of the mounting rod, an access rod movably disposed within the cavity of the access groove, a die head connected to one end of the access rod, a fixing ring fitted around the outer ring of the mounting rod, multiple arc-shaped grooves at the bottom of the fixing ring, an arc-shaped plate movably disposed within the cavity of the arc-shaped grooves, a tray connected to one end of two arc-shaped plates, and a through groove through the top of the tray.

[0004] Based on the above technical features, the problem is that existing molds require the stamping head to be removed for lubrication when applying lubricating oil, resulting in low automation and reduced stamping efficiency.

[0005] Therefore, it is necessary to solve the above problems by using a stamping die with a quick-change stamping head. Utility Model Content

[0006] The purpose of this invention is to provide a stamping die with a quick-change stamping head to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a stamping die with a quick-change stamping head, comprising a base, a lower template mounted on the top of the base; a support seat fixed on the base, a horizontal pressure plate slidably mounted on the support seat; a horizontal upper template above the pressure plate, a hydraulic cylinder fixedly mounted on the upper template; the telescopic shaft of the hydraulic cylinder is vertically downward and the bottom is detachably mounted with a stamping head, the stamping head penetrating the pressure plate and slidingly engaging with the pressure plate; a power support assembly is provided between the upper template and the pressure plate, the power support assembly being drivenly connected to the upper template; an upper oil ring is fixedly mounted on the pressure plate, the upper oil ring being sleeved on the outside of the stamping head and slidingly engaging with the stamping head; an oil tank and an oiling mechanism are mounted on the upper template, the oiling mechanism connecting the upper oil ring and the oil tank, and simultaneously engaging with the telescopic shaft of the hydraulic cylinder.

[0008] Preferably, the oiling mechanism includes a piston cylinder fixed to the upper template; a piston is slidably installed inside the piston cylinder, and a piston rod is fixedly connected to the piston; the rodless chamber of the piston cylinder is connected to the oil tank through a first oil pipe; a second oil pipe is coaxially inserted into the piston rod, and the second oil pipe is fixedly connected to the piston rod; one end of the second oil pipe is connected to the rodless chamber of the piston cylinder, and the other end is fixedly connected to the upper oil ring and communicates with the inside of the upper oil ring; the piston rod is connected to the telescopic shaft of the hydraulic cylinder through a connector, and a one-way valve is fixedly installed in both the first and second oil pipes.

[0009] Preferably, the connector includes a connecting plate, one end of which is fixedly connected to the piston rod, and the other end of which is fixedly connected to the output shaft of the hydraulic cylinder.

[0010] Preferably, a sponge ring is fixedly disposed on the inner ring of the upper oil ring, and the stamping head coaxially passes through the sponge ring and slides in contact with the sponge ring.

[0011] Preferably, the power support assembly includes multiple cylinders, which are evenly distributed in a matrix on the pressure plate; the telescopic shaft of each cylinder is vertically downward and fixedly connected to the pressure plate; the upper template is fixedly connected to the cylinder body of the multiple cylinders.

[0012] Preferably, a chuck is coaxially fixed at the bottom of the telescopic shaft of the hydraulic cylinder, and a through T-shaped groove is radially opened at the bottom of the chuck; a docking plate is coaxially fixed at the top of the punch head, and a T-shaped locking block is radially fixed at the top of the docking plate; the T-shaped locking block and the T-shaped groove are both limited sliding fit and locked limiting fit.

[0013] Preferably, a motor is fixedly mounted on the support base, and the output shaft of the motor is coaxially and fixedly connected to a vertically placed lead screw; the lead screw is rotatably connected to the support base, and at the same time, the lead screw passes through the pressure plate and is threadedly connected to the pressure plate; the pressure plate and the support base are in a limiting sliding fit.

[0014] The technical effects and advantages of this utility model are as follows: The oiling mechanism of this utility model connects the oil tank and the oiling ring. At the same time, the oiling mechanism applies oil to the stamping head through the extension and retraction of the hydraulic cylinder telescopic shaft. No manual oiling is required, the degree of automation is high, and the stamping efficiency is improved. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the oiling mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the stamping head of this utility model.

[0019] In the diagram: 1. Base; 2. Support seat; 3. Pressure plate; 4. Upper template; 5. Cylinder; 6. Oil tank; 7. Motor; 8. Lead screw; 9. Limiting groove; 10. Hydraulic cylinder; 11. Chuck; 12. Upper oil ring; 13. Piston cylinder; 14. First oil pipe; 15. Second oil pipe; 16. Connecting plate; 17. Punch head; 18. Piston rod; 19. Piston; 20. T-shaped clamp. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides, for example Figures 1 to 4 The stamping die shown includes a base 1, with a lower die plate mounted on top of the base 1. A support seat 2 is fixed on the base 1, and a horizontal pressure plate 3 is slidably mounted on the support seat 2. A horizontal upper die plate 4 is disposed above the pressure plate 3.

[0022] A motor 7 is fixedly mounted on the top of the support base 2. A limiting groove 9 is formed on the support base 2 along the vertical direction. A lead screw 8 is vertically placed in the limiting groove 9 and is rotatably connected to the support base 2. The output shaft of the motor 7 is coaxially and fixedly connected to the lead screw 8. A slider is fixedly mounted on the pressure plate 3. The slider is located in the limiting groove 9 and is in a limiting sliding engagement with the limiting groove 9. The lead screw 8 passes through the slider and is threadedly connected to the slider.

[0023] A power support assembly is installed between the upper template 4 and the pressure plate 3, and the power support assembly is connected to the upper template 4 via a transmission connection. The power support assembly includes multiple cylinders 5, which are evenly distributed in a matrix on the pressure plate 3. The telescopic shaft of each cylinder 5 is vertically downward and fixedly connected to the pressure plate 3. The upper template 4 is fixedly connected to the cylinder bodies of the multiple cylinders 5.

[0024] A hydraulic cylinder 10 is fixedly installed on the upper template 4. The telescopic shaft of the hydraulic cylinder 10 is vertically downward and passes through the upper template 4. The telescopic shaft of the hydraulic cylinder 10 is slidably engaged with the upper template 4. At the same time, a punch head 17 is detachably installed at the bottom of the telescopic shaft of the hydraulic cylinder 10. The punch head 17 passes through the pressure plate 3 and is slidably engaged with the pressure plate 3.

[0025] A chuck 11 is coaxially fixed to the bottom of the telescopic shaft of the hydraulic cylinder 10. A through-type T-shaped groove is radially opened at the bottom of the chuck 11. A mating plate is coaxially fixed to the top of the punch head 17. A T-shaped locking block 20 is radially fixed to the top of the mating plate. The T-shaped locking block 20 and the T-shaped groove are both limited sliding fit and locked limiting fit.

[0026] An upper oil ring 12 is fixedly installed on the pressure plate 3. The upper oil ring 12 is sleeved on the outside of the punch head 17 and slides in fit with the punch head 17. A sponge ring is fixedly installed on the inner ring of the upper oil ring 12. The punch head 17 coaxially passes through the sponge ring and slides in contact with the sponge ring.

[0027] An oil tank 6 and an oil supply mechanism are installed on the upper template 4. The oil supply mechanism is connected to the oil ring 12 and the oil tank 6. At the same time, the oil supply mechanism is driven by the telescopic shaft of the hydraulic cylinder 10.

[0028] The oiling mechanism includes a piston cylinder 13, which is fixed and vertically positioned on the upper template 4. A piston 19 is slidably installed inside the piston cylinder 13, and a vertically positioned piston rod 18 is fixedly connected to the bottom of the piston 19. The rodless chamber of the piston cylinder 13 is connected to the oil tank 6 through a first oil pipe 14. One end of the first oil pipe 14 is connected to the oil tank 6, and the other end of the first oil pipe 14 is connected to the rodless chamber of the piston cylinder 13.

[0029] The piston rod 18 is coaxially inserted into the second oil pipe 15, and the second oil pipe 15 is fixedly connected to the piston rod 18. One end of the second oil pipe 15 is connected to the rodless chamber of the piston cylinder 13, and the other end is fixedly connected to the upper oil ring 12 and the pipe end is connected to the inside of the upper oil ring 12.

[0030] A one-way valve is fixedly installed at the connection between the first oil pipe 14 and the piston cylinder 13, and at the connection between the second oil pipe 15 and the piston rod 18.

[0031] The piston rod 18 is connected to the telescopic shaft of the hydraulic cylinder 10 via a connector to drive the piston rod 18 to extend or retract from the piston cylinder 13. The connector includes a horizontal connecting plate 16, which is transversely positioned between the piston rod 18 and the telescopic shaft of the hydraulic cylinder 10. One end of the connecting plate 16 is fixedly connected to the piston rod 18 radially, and the other end of the connecting plate 16 is fixedly connected to the telescopic shaft of the hydraulic cylinder 10 radially.

[0032] Working principle: When a stamping process is required, the workpiece to be processed is placed on the lower template, and then the motor 7 is started. The output shaft of the motor 7 drives the lead screw 8 to rotate, and the lead screw 8 pushes the slider down along the limiting groove 9. The slider drives the pressure plate 3 to move down and press it onto the workpiece to be processed.

[0033] When the pressure plate 3 moves down, it drives all the cylinders 5 to move down, and the cylinder bodies of all the cylinders 5 simultaneously drive the upper template 4 to move down.

[0034] After the pressure plate 3 presses onto the workpiece, the hydraulic cylinder 10 is activated. The telescopic shaft of the hydraulic cylinder 10 extends downward and pushes the chuck 11 downward. The chuck 11 pushes the T-shaped chuck 20 downward, and the T-shaped chuck 20 pushes the mating plate downward. The mating plate drives the stamping head 17 to approach the stamping point of the workpiece and stamp the stamping point.

[0035] When replacing the stamping head 17, all cylinders 5 are activated simultaneously, and the telescopic shafts of all cylinders 5 extend downwards. In this example, cylinders 5 can be replaced with hydraulic cylinders. At this time, the cylinder bodies of all cylinders 5 drive the upper template 4 to move upwards, and the upper template 4 drives the hydraulic cylinder 10 to move upwards. The telescopic shaft of the hydraulic cylinder 10 drives the chuck 11 to move upwards, and the chuck 11 drives the T-shaped slot to move upwards synchronously. The T-shaped slot drives the T-shaped locking block 20 to move upwards synchronously, and the T-shaped locking block 20 drives the stamping head 17 to slide upwards and disengage from the pressure plate 3.

[0036] Once the stamping head 17 is completely disengaged from the pressure plate 3, push the stamping head 17, which will move the mating plate. The mating plate will then cause the T-shaped locking block 20 to slide out of the T-shaped slot. Finally, replace the stamping head 17 with a new one.

[0037] When lubrication of the stamping head 17 is required, the hydraulic cylinder 10 is activated, and the telescopic shaft of the hydraulic cylinder 10 extends and retracts. During the extension and retraction of the telescopic shaft of the hydraulic cylinder 10, it slides into contact with the sponge ring inside the upper oil ring 12.

[0038] During the downward extension of the telescopic shaft of hydraulic cylinder 10, the piston rod 18 is driven to extend downward via connecting plate 16. Piston rod 18 causes piston 19 to slide down, increasing the volume of the rodless chamber of piston cylinder 13. At this time, the check valve on the first oil pipe 14 opens, and the check valve in the second oil pipe 15 closes. Lubricating oil in oil tank 6 is drawn into the rodless chamber of piston cylinder 13 via the first oil pipe 14.

[0039] When the telescopic shaft of hydraulic cylinder 10 retracts upward, it drives piston rod 18 to retract upward via connecting plate 16. Piston rod 18 drives piston 19 to slide upward, reducing the volume of the rodless chamber of piston cylinder 13. At this time, the one-way valve on the first oil pipe 14 closes the first oil pipe 14, and the one-way valve in the second oil pipe 15 opens the second oil pipe 15. Lubricating oil in the rodless chamber of piston cylinder 13 is sprayed onto the sponge ring inside the upper oil ring 12 via the second oil pipe 15. Due to the sliding contact between the sponge ring and the stamping head 17, the lubricating oil is applied to the stamping head 17.

[0040] In this example, cooling oil can also be added to the oil tank 6, and the second oil pipe 15 is a flexible hose.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A punch head exchangeable stamping die, comprising a base (1), a lower die plate is mounted on the top of the base (1); characterized in that: The base (1) is fixed with a support seat (2), the support seat (2) is slidably installed with a horizontal pressing plate (3); the upper side of the pressing plate (3) is provided with a horizontal upper mold plate (4), the upper mold plate (4) is fixedly installed with a hydraulic cylinder (10); the telescopic shaft of the hydraulic cylinder (10) is vertically downward and the bottom is detachably installed with a stamping head (17), the stamping head (17) penetrates through the pressing plate (3) and is slidably matched with the pressing plate (3); a power support assembly is arranged between the upper mold plate (4) and the pressing plate (3), and the power support assembly is drivingly connected with the upper mold plate (4); the pressing plate (3) is fixedly provided with an upper oil ring (12), the upper oil ring (12) is sleeved outside the stamping head (17) and is slidably matched with the stamping head (17); the upper mold plate (4) is provided with an oil tank (6) and an oil feeding mechanism, the oil feeding mechanism is connected with the upper oil ring (12) and the oil tank (6), and is drivingly matched with the telescopic shaft of the hydraulic cylinder (10).

2. The punch head quick change press die of claim 1, wherein: The oil feeding mechanism comprises a piston cylinder (13), the piston cylinder (13) is fixed on the upper mold plate (4); a piston (19) is slidably installed in the piston cylinder (13), the piston (19) is fixedly connected with a piston rod (18); a rodless cavity of the piston cylinder (13) is communicated with the oil tank (6) through a first oil pipe (14); the piston rod (18) is coaxially penetrated into a second oil pipe (15), the second oil pipe (15) is fixedly connected with the piston rod (18); one end of the second oil pipe (15) is communicated with the rodless cavity of the piston cylinder (13), and the other end is fixedly connected with the upper oil ring (12) and communicated with the inside of the upper oil ring (12); the piston rod (18) is drivingly connected with the telescopic shaft of the hydraulic cylinder (10) through a connecting piece, and one-way valves are fixedly installed in the first oil pipe (14) and the second oil pipe (15).

3. The punch head quick change press die of claim 2, wherein: The connecting piece comprises a connecting plate (16), one end of the connecting plate (16) is fixedly connected with the piston rod (18), and the other end is fixedly connected with the output shaft of the hydraulic cylinder (10).

4. The punch head quick change press die of claim 2, wherein: The inner ring of the upper oil ring (12) is fixedly provided with a sponge ring, and the stamping head (17) is coaxially penetrated through the sponge ring and slidably contacted with the sponge ring.

5. The punch head quick change stamping die of claim 1, wherein: The power support assembly comprises a plurality of air cylinders (5), the plurality of air cylinders (5) are arranged in a matrix on the pressing plate (3); the telescopic shaft of each air cylinder (5) is vertically downward and is fixedly connected with the pressing plate (3); the upper mold plate (4) is fixedly connected with the cylinder bodies of the plurality of air cylinders (5).

6. The punch head quick change press die of claim 1, wherein: The bottom of the telescopic shaft of the hydraulic cylinder (10) is coaxially fixedly provided with a chuck (11), the bottom of the chuck (11) is radially provided with a through T-shaped clamping groove; the top of the stamping head (17) is coaxially fixedly connected with a butt joint disc, and the top of the butt joint disc is radially fixedly provided with a T-shaped clamping block (20); the T-shaped clamping block (20) is both limitingly slidably matched with the T-shaped clamping groove and limitingly clamped.

7. The punch head quick change stamping die of claim 1, wherein: The support base (2) is fixedly installed with a motor (7), and the output shaft of the motor (7) is coaxially and fixedly connected with a vertical screw rod (8); the screw rod (8) is rotationally connected with the support base (2), and the screw rod (8) penetrates through the pressing plate (3) and is threadedly connected with the pressing plate (3); the pressing plate (3) is limitingly and slidingly matched with the support base (2).

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