Stamping die with stripping mechanism

Abstract

The utility model discloses a stamping die with a stripping mechanism, which comprises a die holder, two pneumatic lower dies for stamping workpieces are slidably arranged at the end of the die holder through a strip-shaped limit plate, and a positioning insert plate for positioning pneumatic positions of the pneumatic lower dies is arranged in an inner cavity in the center of the die holder. One of the pneumatic lower dies is moved to the vertical bottom of the pneumatic upper die to carry out die assembly stamping, and after die assembly stamping, the air cylinder D retracts to enable the pneumatic lower dies to carry out stripping and discharging work towards one side, and the pneumatic lower die at the other end of the die holder moves the bottom of the pneumatic upper die through the air cylinder D to carry out stamping work; accordingly, a stamped workpiece can be translated to the two ends of the die holder to be alternately subjected to stripping and feeding work, the stamped workpiece can be safely stripped, sufficient time is provided for stripping through alternating of the two pneumatic lower dies and die assembly stamping of the pneumatic upper die, meanwhile, the workpiece stamping continuity is guaranteed, and the stamping efficiency is improved. Therefore, the punching working efficiency is not influenced.

Description

Technical Field

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

[0002] A stamping die is a die used to produce workpieces of specific shapes by stamping. Simply place the material on the lower die and use a hydraulic column to drive the upper die for stamping to obtain a workpiece of a specific shape. However, in the prior art, a slope is basically set to allow the stamping parts to automatically discharge by their own weight. During the discharge process, the stamping parts squeeze each other, which will block the discharge port, resulting in failure to discharge the material normally, and will also damage the stamping die and stamping parts. When the existing stamping mold needs to process the stamping parts into certain specific shapes, after the stamping is completed, the stamping parts will be stuck on the upper die, and the driving device in the lower die cannot be used to remove the material; the stamping head is fixedly connected to the upper die, and after multiple stampings, the stamping head will wear, which will affect the quality of the stamping parts; there is no reliable positioning device to position the material, which affects the forming size of the stamping parts.

[0003] To this end, a stamping die with a stripping device and the announcement number "CN220239798U" includes a die assembly, wherein the bottom of the die assembly is fixedly connected to a base; the base is fixedly connected to a stripping assembly; the stripping assembly is behind the die assembly; the die assembly is fixedly connected to a positioning assembly; the die assembly includes a replaceable punch type upper die and a lower die; the replaceable punch type upper die is above the lower die; the replaceable punch type upper die is connected to the lower die; the bottom of the lower die is fixedly connected to the base. In the above manner, the punch can be easily replaced, thereby avoiding the impact of punch wear on the quality of the stamped parts; when producing stamped parts of a specific shape that will be stuck on the upper die, stripping can also be automatically completed; the precise positioning of the stamped parts can be completed, and at the same time, the stamping process will not be hindered.

[0004] However, for the above-mentioned stamping die with a stripping device, although when the stamping part is brought to the highest point and stabilized, the cylinder of the stripping assembly is started to drive the connecting plate to move forward; the connecting plate drives the push head to move forward, thereby pushing the stamping part to be demolded, there are still the following obvious defects during use: this stripping method is prone to cause the workpiece to slip out of the punch during the forward movement because the workpiece is suspended at a high altitude, and fall from a high altitude and hit the ground, and then the workpiece will be deformed and scratched. Utility Model Content

[0005] The utility model aims to provide a stamping die with a stripping mechanism to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a stamping die with a stripping mechanism, comprising:

[0007] A die base, wherein two pneumatic lower dies for punching the workpiece are slidably arranged at the end of the die base through a strip-shaped limit plate, a positioning plug plate for pneumatically positioning the pneumatic lower die is arranged in the inner cavity at the center of the die base, and a pneumatic upper die for clamping with the pneumatic lower die to punch the workpiece is arranged at the vertical upper end of the pneumatic lower die;

[0008] A stamping frame is installed at the center position of the end of the die base and is located on the outside of the strip limit plate. Both sides of the stamping frame are provided with stripping suction cups for adsorbing and unloading workpieces in two pneumatic lower dies, and one side of the stamping frame is provided with a high-pressure air pump that cooperates with the stripping suction cups to generate suction to adsorb and demold the workpieces.

[0009] Preferably, the two sides of the die base end where the strip limit plate is set and the inner side of the strip limit plate are provided with limit grooves, so that the two pneumatic lower dies can move alternately inside the strip limit plate and punch and close the die with the pneumatic upper dies, thereby making the stamping of the workpiece more continuous.

[0010] Preferably, limiting slide bars are provided on the two sides of the two pneumatic lower dies, and the two pneumatic lower dies are slidably arranged on the inner side of the strip limiting plate, and the limiting slide bars limit and slide on the inner side of the limiting slide groove, so that the two alternately moving pneumatic lower dies can slide stably on the end of the die base.

[0011] Preferably, a cylinder A is symmetrically provided at the bottom of the positioning plug plate, and a mold positioning plug rod is movably penetrated into the mold base for telescopic movement, so that one of the pneumatic lower molds and the pneumatic upper mold can be limited and fixed before stamping and closing the mold, ensuring that the pneumatic lower mold remains stable during stamping without position displacement and shaking.

[0012] Preferably, the bottoms of the two pneumatic lower dies are provided with fixed die grooves that are adapted to be plugged and positioned with positioning rods, and the top surface of the pneumatic upper die is provided with a movable plate end with a cylinder B, and the cylinder B is fixed to the inner top of the stamping frame, so that the pneumatic upper die can move up and down through the cylinder B to continuously perform mold closing and stamping work with the two pneumatic lower dies.

[0013] Preferably, support plates are provided on both sides of the stamping frame, and a cylinder C is provided at the bottom of the support plates. One end of the piston rod of the cylinder C is fixed at the center position of the end of the stripping suction cup, so that after the stamping workpiece is pneumatically moved to the two ends of the die base, it is adsorbed and unloaded through the stripping suction cup.

[0014] Preferably, the stripping suction cups are connected to an air pipe that passes through the support plate, and electric pressure relief valves are installed at both ends of the air pipe. The air pipe is connected to the air outlet port of the high-pressure air pump through a short pipe, so that the adsorbed workpiece can be moved up. When the worker takes the workpiece, the electric pressure relief valve is used to relieve the pressure on the pipeline, so that the workpiece can be removed from the stripping suction cup, and the workpiece that needs to be stamped can be placed on the pneumatic lower die.

[0015] Preferably, a cylinder D is provided on both sides of the end of the mold base, and one end of the piston rod of the cylinder D is fixed to one side of the two pneumatic lower molds, which is used to drive the two pneumatic molds to move to the two ends of the mold base for adsorption unloading and manual loading.

[0016] Compared with the prior art, the technical effects and advantages of the utility model are as follows: the stamping die with a stripping mechanism is used in conjunction with a combination of two pneumatic lower dies, a limit slide, and a cylinder D and a combination of a strip limit plate and a limit slide groove at the end of a die base, so that one of the pneumatic lower dies is moved to the vertical bottom of the pneumatic upper die for die closing and stamping, and after die closing and stamping, the cylinder D retracts to make the pneumatic lower die to one side for stripping and discharging, while the pneumatic lower die at the other end of the die base moves the bottom of the pneumatic upper die through the cylinder D for stamping, so that the stamped workpiece can be translated to the two ends of the die base for alternate stripping and loading, so that the stamped workpiece can be safely stripped, and the alternation of the two pneumatic lower dies and the die closing and stamping of the pneumatic upper die have sufficient time for stripping, while ensuring the continuity of the workpiece stamping, which will not affect the stamping work efficiency, and further ensure the safety of the workpiece during stripping without the occurrence of bumps, deformations, and scratches.

[0017] Through the combined use of a high-pressure air pump, a stripping suction cup, an air pipe and a cylinder C, the pneumatic lower die that moves alternately to both ends of the die base can push the stripping suction cup downward through the cylinder C to cover the workpiece, and the high-pressure air pump is used to make the stripping suction cup generate suction to adsorb the workpiece in the pneumatic lower die and move it upward to separate it from the die cavity. The staff takes out the workpiece through the pressure relief of the electric pressure relief valve, and at the same time places the workpiece to be stamped in the die cavity of the pneumatic lower die and moves it pneumatically to alternately close the die with the pneumatic upper die for stamping, thereby realizing continuous stamping, unloading and loading of the workpiece, further improving the efficiency of workpiece stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the side view of the pneumatic lower die and die base of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the stripping suction cup of the utility model from the main view.

[0021] In the figure: 1. Die base; 2. Bar limit plate; 3. Pneumatic lower die; 4. Positioning plug plate; 5. Pneumatic upper die; 6. Stamping frame; 7. Stripping suction cup; 8. High-pressure air pump; 9. Limit slide; 10. Limit slide; 11. Cylinder A; 12. Die positioning plug rod; 13. Die fixed groove; 14. Cylinder B; 15. Cylinder C; 16. Air pipe; 17. Cylinder D. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a stamping die with a stripping mechanism, comprising:

[0024] A die base 1, wherein two pneumatic lower dies 3 for punching the workpiece are slidably provided at the end of the die base 1 through a strip limit plate 2, and the two pneumatic lower dies 3 can be alternately moved toward the middle at the end of the die base 1 for punching work, and a stamping die cavity is provided at the center position of the end of the pneumatic lower die 3, and a die positioning groove for stamping die positioning is provided on the outer side of the stamping die cavity port and on the surface of the pneumatic lower die 3 to ensure stability during stamping and die closing, and a positioning plug plate 4 for pneumatically positioning the pneumatic lower die 3 is provided in the inner cavity at the center position of the die base 1, and the alternately moving pneumatic lower die 3 can be alternately positioned and fixed after moving to the center position, thereby enhancing the stability of the pneumatic lower die 3 on the die base 1 during stamping, and a pneumatic upper die 5 for punching the workpiece with the pneumatic lower die 3 is provided at the vertical upper end of the pneumatic lower die 3, thereby realizing repeated clamping of the two pneumatic lower dies 3 to continuously stamp and form the workpiece, thereby improving the efficiency of workpiece stamping;

[0025] A stamping frame 6, wherein the stamping frame 6 is installed at the center position of the end of the die base 1 and is located on the outside of the strip limit plate 2, and the inner sides of the four columns of the stamping frame 6 are all installed with infrared limit sensors, and the infrared limit sensors are used to limit the position of the two pneumatic lower dies 3 after they are alternately moved to the bottom end of the pneumatic upper die 5 to avoid the phenomenon of mold misalignment, and can detect that the pneumatic lower die 3 stops after moving to the set position, so as to facilitate the precise mold closing operation of the pneumatic upper die 5, and at the same time, it can realize the precise limiting positioning of the moving position of the pneumatic lower die 3, which is helpful to improve production efficiency and operation accuracy, and both sides of the stamping frame 6 are provided with stripping suction cups 7 for adsorbing and unloading workpieces in the two pneumatic lower dies 3, and one side of the stamping frame 6 is provided with a high-pressure air pump 8 that cooperates with the stripping suction cup 7 to generate suction to adsorb and demold the workpiece, so that the high-pressure air pump 8 can generate suction to adsorb the workpiece from the molding cavity of the pneumatic lower die 3, and place the workpiece to be stamped in the molding cavity.

[0026] The strip limit plate 2 is set on the two sides of the end of the mold base 1, so that the strip limit plate 2 allows the two pneumatic lower molds 3 to slide stably at the end of the mold base 1, and the inner side of the strip limit plate 2 is provided with a limit slide groove 9, so that the two pneumatic lower molds 3 can slide stably at the end of the mold base 1 without deviation. The two sides of the two pneumatic lower molds 3 are provided with a limit slide bar 10, and the limit slide bar 10 can enhance the sliding stability of the pneumatic lower mold 3, and the two pneumatic lower molds 3 are slidingly set on the inner side of the strip limit plate 2, and the limit slide bar 10 is limited and slid on the inner side of the limit slide groove 9 to ensure that the pneumatic lower mold 3 maintains the moving position without deviation during the alternating movement.

[0027] The bottom of the positioning plug plate 4 is symmetrically provided with a cylinder A11, and the cylinder A11 can control the air pressure through the air pressure valve to limit the telescopic movement of the cylinder A11 to ensure the accurate positioning of the pneumatic lower mold 3. The end of the positioning plug plate 4 is provided with a mold positioning rod 12 that can be movably penetrated into the mold base 1 for telescopic movement, and is used to insert and limit the pneumatic lower mold 3 moved to the middle of the mold base 1 to avoid vibration during stamping. The bottom of the two pneumatic lower molds 3 is provided with a mold fixing groove 13 that is compatible with the mold positioning rod 12 for positioning, so that the mold positioning rod 12 is inserted into the fixing groove 13. The position of the mold is positioned in the mold fixed groove 13, and the top surface of the pneumatic upper mold 5 is provided with a movable plate end provided with a cylinder B14. The cylinder B14 pushes the pneumatic upper mold 5 to move up and down and alternately close the mold with the two pneumatic lower molds 3 for stamping. The cylinder B14 is fixed to the inner top of the stamping frame 6 to ensure the firmness of the cylinder B14. Support plates are provided on both sides of the stamping frame 6, and cylinders C15 are provided at the bottom of the support plates. One end of the piston rod of the cylinder C15 is fixed at the end center position of the stripping suction cup 7, so as to achieve the effect of adsorbing and demolding the workpiece moved out to the pneumatic lower molds 3 at both ends of the mold base 1.

[0028] The stripping suction cups 7 are connected to an air pipe 16 that passes through the support plate. One end of the air pipe 16 is connected to the stripping suction cup 7, and both ends of the air pipe 16 are equipped with electric pressure relief valves for relieving the adsorption force to facilitate the removal of the workpiece. The air pipe 16 is connected to the air outlet port of the high-pressure air pump 8 through a short tube to form a complete function of adsorbing the workpiece for adsorbing and unloading the workpiece. Cylinders D17 are provided on both sides of the end of the mold base 1. The cylinder D17 can set the distance of the moving stroke so that the pneumatic lower mold 3 can be accurately moved to the vertical bottom of the pneumatic upper mold 5 for accurate mold closing, and the time for the alternating telescopic movement of the cylinder D17 is set and controlled by an electric air valve. One end of the piston rod of the cylinder D17 is fixed to one side of the two pneumatic lower molds 3 to achieve alternating movement of the two pneumatic lower molds 3.

[0029] Specifically, when in use, first place the workpiece to be stamped in the mold cavity of the two pneumatic lower molds 3, and the cylinder D17 at one end of the mold base 1 pushes the pneumatic lower mold 3 on one side to move toward the middle, so that the pneumatic lower mold 3 moves to the vertical bottom end of the pneumatic upper mold 5, and uses the infrared limit sensor to detect and limit the moving position of the pneumatic lower mold 3 to ensure the accuracy in mold closing and avoid the problem of displacement deviation caused by mold closing. Then, the cylinder B14 pushes the pneumatic upper mold 5 to move downward and close the mold with the pneumatic lower mold 3 to stamp the workpiece, and after the stamping is completed, the pneumatic lower mold 3 moves to one end of the mold base 1 through the cylinder D17. At this time, the cylinder D17 at the other end of the mold base 1 pushes the other pneumatic lower mold 3 to move toward the middle of the mold base 1 and close to it. The pneumatic upper die 5 performs the stamping work of the workpiece vertically. During this process, the pneumatic lower die 3 that has completed stamping moves to the bottom of the stripping suction cup 7, so that the stripping suction cup 7 moves downward through the cylinder C15 and uses the high-pressure air pump 8 to generate suction to adsorb the workpiece, so that the workpiece can be demoulded from the molding cavity, and the workpiece that needs to be stamped is placed in the molding cavity and waits for another workpiece to move outward after completing stamping, and then moves to the middle of the die base 1. The above-mentioned alternating stamping method can not only realize the continuous stamping of the workpiece, but also enable the formed workpiece to be safely stripped, unloaded and loaded in sufficient time, without affecting the continuity of the workpiece stamping, and can make reasonable use of time, further improving the efficiency of workpiece stamping.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stamping die with a stripping mechanism, characterized in that: include: A die base (1), wherein two pneumatic lower dies (3) for punching a workpiece are slidably arranged at the end of the die base (1) through a strip-shaped limiting plate (2), a positioning plug plate (4) for pneumatically positioning the pneumatic lower die (3) is arranged in the inner cavity at the center of the die base (1), and a pneumatic upper die (5) for clamping with the pneumatic lower die (3) for punching the workpiece is arranged at the vertical upper end of the pneumatic lower die (3); A stamping frame (6) is installed at the center of the end of the die base (1) and is located on the outside of the strip limit plate (2). Both sides of the stamping frame (6) are provided with stripping suction cups (7) for adsorbing and unloading workpieces from two pneumatic lower dies (3), and one side of the stamping frame (6) is provided with a high-pressure air pump (8) for cooperating with the stripping suction cups (7) to generate suction to adsorb and demold the workpieces.

2. A stamping die with a stripping mechanism according to claim 1, characterized in that: The strip-shaped limiting plates (2) are arranged on two sides of the end of the mold base (1), and limiting sliding grooves (9) are provided on the inner side surfaces of the strip-shaped limiting plates (2).

3. A stamping die with a stripping mechanism according to claim 2, characterized in that: The two sides of the two pneumatic lower dies (3) are provided with limiting slide bars (10), and the two pneumatic lower dies (3) are slidably arranged on the inner side of the strip-shaped limiting plate (2), and the limiting slide bars (10) are limitedly slid on the inner side of the limiting slide groove (9).

4. A stamping die with a stripping mechanism according to claim 1, characterized in that: A cylinder A (11) is symmetrically arranged at the bottom of the positioning plug plate (4), and a mold positioning plug rod (12) is movably penetrated through the mold base (1) for telescopic movement at the end of the positioning plug plate (4).

5. The stamping die with a stripping mechanism according to claim 1, characterized in that: The bottoms of the two pneumatic lower dies (3) are provided with die fixing grooves (13) adapted to be plugged and positioned with die positioning plug rods (12), and the top end surface of the pneumatic upper die (5) is provided with a cylinder B (14) at the end of a movable plate, and the cylinder B (14) is fixed to the inner top end of the stamping frame (6).

6. A stamping die with a stripping mechanism according to claim 1, characterized in that: Support plates are provided on both sides of the punching frame (6), and cylinders C (15) are provided at the bottom of the support plates. One end of the piston rod of the cylinder C (15) is fixed at the center position of the end of the stripping suction cup (7).

7. A stamping die with a stripping mechanism according to claim 6, characterized in that: The stripping suction cups (7) are connected to an air pipe (16) that passes through the support plate, and electric pressure relief valves are installed at both ends of the air pipe (16). The air pipe (16) is connected to the air outlet port of the high-pressure air pump (8) through a short pipe.

8. The stamping die with a stripping mechanism according to claim 1, characterized in that: Cylinders D (17) are provided on both sides of the end of the mold base (1), and one end of the piston rod of the cylinder D (17) is fixed to one side of the two pneumatic lower molds (3).

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