Precise punch forming die

Abstract

The utility model provides a precision stamping forming die, which relates to the technical field of stamping dies and comprises a machining table, a protection mechanism is arranged at the upper end of the machining table and comprises a protection frame, the lower end of the protection frame is fixedly connected with the upper end of the machining table, and guide grooves which are symmetrically distributed are formed in the inner walls of the two sides of the protection frame. Protection plates are slidably inserted into the inner walls of the two guide grooves, observation glass fixedly sleeves the inner walls of the protection plates, and through the protection mechanism, the outer side of a stamping area is surrounded and protected through a protection frame and the protection plates during stamping operation, so that the safety during stamping operation is improved, and after stamping is completed, the safety of the stamping area is improved. The movable base drives the lower die to move and stretch out, and the protection plate synchronously ascends to move in a matched mode, so that a worker can conveniently discharge and replace a workpiece on the lower die, the lower die is separated from a stamping area, and the operation safety of the worker is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch die technical field especially relates to a precision punch forming die. BACKGROUND

[0002] Punch die is a special process equipment in cold stamping processing, which processes materials (metal or non-metal) into parts (or semi-finished products), and is called cold stamping die (commonly known as cold stamping die). Punching is a kind of pressure processing method that separates or plastically deforms materials by using dies installed on a press at room temperature.

[0003] For example, a precision punch forming die (publication number: CN218425161U) is disclosed in Chinese patent documents. This patent can avoid the injury of workers' hands by using the anti-injury part. When stamping, the hydraulic cylinder drives the upper die and the rack to move downward, the rack drives the first gear to rotate clockwise, and the first gear drives the second gear and the push rod to rotate counterclockwise. If the worker's hand is still between the upper die and the lower die, it can push the worker's hand to the right to move away from the stamping area, reduce the occurrence of safety accidents, and improve the safety.

[0004] However, when the hydraulic cylinder drives the upper die and the rack to move downward, the rack will also quickly descend due to the fast speed. The rapid movement of the rack will drive the first gear to rotate clockwise, and the first gear will further drive the second gear to rotate, thereby making the push rod rotate counterclockwise.

[0005] In this process, due to the fast transmission speed of each component, the push rod will rotate at a high speed. If the worker's hand is still between the upper die and the lower die at this time, although the function of the push rod is to push the worker's hand out of the stamping area to the right, the rapidly rotating push rod may impact the worker's hand. This impact may cause injury to the worker's hand, such as abrasions, bruises, or even fractures.

[0006] In addition, relying solely on a single push rod to push the worker's hand out of the upper die and the lower die cannot completely ensure the safety of the worker. In actual operation, various unexpected situations may occur, for example, the worker's hand may be in a relatively special position, the push rod may not completely contact the worker's hand, or the push rod may fail to completely push the worker's hand out of the stamping area during the pushing process. In addition, even if the push rod successfully pushes the worker's hand out of a part, if the worker fails to completely withdraw the hand in time due to panic, the worker may still be injured by the stamping of the upper die, thereby existing a certain safety hazard problem. SUMMARY

[0007] The utility model discloses a purpose is to solve the shortcoming of prior art, the current through push rod pushes out the speed of worker's hand too fast, and the single push rod protection cannot guarantee that the hand of worker is pushed out the stamping area completely, therefore there is certain security hidden danger problem.

[0008] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] A precision stamping forming die, including the machining table, the upper end of machining table is provided with the protection mechanism, and the protection mechanism includes the protection frame, the lower end of protection frame is fixedly connected with the upper end of machining table, the both sides inner wall of protection frame is opened with the guide groove that is symmetrically distributed, and the inner wall of two guide grooves all slidingly inserts the protection plate, the inner wall of protection plate is fixedly sleeved with the observation glass, the back of protection plate is fixedly connected with the first rack that is symmetrically distributed, the both sides of protection frame are rotatably connected with the driven rod that is symmetrically distributed through bearing, the outer fixed sleeve of driven rod has driven pulley, the outer transmission of driven pulley is connected with transmission belt, and the outer fixed sleeve of one end of driven rod has driven gear, and the tooth surface of driven gear is engaged with the tooth surface of first rack.

[0010] Preferably, the both sides inner wall of the protection frame is rotatably connected with the driving rod that is symmetrically distributed through the bearing, the outer fixed sleeve of the driving rod has the driving pulley, and the outer transmission of the driving pulley is connected with the inner transmission of the transmission belt.

[0011] Preferably, the outer fixed sleeve of one end of the driving rod has the driving gear, the upper end of the machining table is opened with the moving groove, and the rear inner wall of the moving groove is fixedly installed with the servo electric cylinder.

[0012] Preferably, one end of the servo electric cylinder piston rod is fixedly connected with the moving block, the outer sliding connection of the moving block is connected with the inner wall of the moving groove, the upper end of the moving block is fixedly connected with the moving base, and the lower end of the moving base is in contact with the upper end of the machining table.

[0013] Preferably, the both sides of the moving base are fixedly connected with the connecting block that is symmetrically distributed, one end of the connecting block is fixedly connected with the second rack, the lower end of the second rack is in contact with the upper end of the machining table, the tooth surface of the second rack is engaged with the tooth surface of the driving gear, and the upper end of the moving base is fixedly connected with the spring shock absorber that is rectangular array distribution.

[0014] Preferably, the upper end of a plurality of spring shock absorbers is fixedly connected with the lower die, the rear inner wall of the protection frame is fixedly connected with the top plate, and the inner wall of the top plate is fixedly installed with the hydraulic cylinder.

[0015] Preferably, one end of the hydraulic cylinder piston rod is fixedly connected with an upper die, the upper end of the upper die is fixedly connected with symmetrically distributed guide rods, and the guide rods are both arranged to penetrate through and extend to the upper end of the top plate.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] In the utility model, the protective frame and the protective plate are used to surround and protect the outside of the stamping area during stamping operation, thereby improving the safety during stamping operation; after stamping is completed, the lower die is moved out by moving the base, and the protective plate is synchronously lifted and moved, so that the workpiece on the lower die can be unloaded and replaced, and the lower die is separated from the stamping area, thereby greatly improving the safety of worker operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A main body structure schematic diagram of the precision stamping forming die is provided in the utility model.

[0019] Figure 2 A protective frame structure perspective view of the precision stamping forming die is provided in the utility model.

[0020] Figure 3 A machining table structure perspective view of the precision stamping forming die is provided in the utility model.

[0021] Figure 4 A protective plate structure perspective view of the precision stamping forming die is provided in the utility model.

[0022] Figure 5 An explosion view of the driven gear structure of the precision stamping forming die is provided in the utility model.

[0023] Legend: 1, machining table; 2, protective frame; 21, guide groove; 22, protective plate; 23, observation glass; 24, first rack; 25, driven rod; 26, driven pulley; 27, transmission belt; 28, driven gear; 29, driving rod; 210, driving pulley; 211, driving gear; 3, moving groove; 31, servo electric cylinder; 32, moving block; 33, moving base; 34, connecting block; 35, second rack; 36, spring shock absorber; 37, lower die; 4, top plate; 5, hydraulic cylinder; 6, upper die; 7, guide rod. DETAILED DESCRIPTION

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to 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.

[0025] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Example

[0029] like Figures 1-5 As shown, this utility model provides a technical solution: a precision stamping forming mold, including a processing table 1. The processing table 1 serves as the basic support structure of the entire mold and is made of high-strength metal material, which has good stability and load-bearing capacity. Its surface is finely processed to ensure flatness and smoothness, so as to ensure the accuracy and stability of each component of the mold during operation.

[0030] The upper end of the processing table 1 is equipped with a protective mechanism, which includes a protective frame 2. The lower end of the protective frame 2 is fixedly connected to the upper end of the processing table 1. The protective frame 2 is firmly connected to the processing table 1 by multiple high-strength bolts to ensure that it will not loosen or shift during the stamping process.

[0031] The inner walls of both sides of the protective frame 2 are provided with symmetrically distributed guide grooves 21. The inner walls of the two guide grooves 21 are slidably inserted with protective plates 22. The edges of the protective plates 22 are finely polished to make them fit tightly with the inner walls of the guide grooves 21, reducing the gap during the sliding process.

[0032] An observation glass 23 is fixedly sleeved on the inner wall of the protective plate 22. A first rack 24, which is symmetrically distributed, is fixedly connected to the back of the protective plate 22. A driven rod 25, which is symmetrically distributed, is rotatably connected to both sides of the protective frame 2 via bearings. A driven pulley 26 is fixedly sleeved on the outside of the driven rod 25. A transmission belt 27 is connected to the outside of the driven pulley 26. A driven gear 28 is fixedly sleeved on one end of the driven rod 25. The tooth surface of the driven gear 28 meshes with the tooth surface of the first rack 24. The first rack 24 is made of high-strength metal material and has high tooth profile precision, which can mesh tightly with the driven gear 28. The first rack 24 is firmly fixed to the protective plate 22 by welding or bolting to ensure that it will not loosen or fall off during transmission.

[0033] The inner walls of both sides of the protective frame 2 are rotatably connected by bearings with symmetrically distributed drive rods 29. Drive pulleys 210 are fixedly sleeved on the outside of the drive rods 29. The outside of the drive pulleys 210 is connected to the inside of the transmission belt 27. The size of the transmission belt 27 is designed according to the size of the driven pulleys 26 and the drive pulleys 210 to ensure smooth transmission between them. The transmission belt 27, driven pulleys 26 and drive pulleys 210 can be replaced with sprockets and chains for use according to the requirements of use.

[0034] One end of the drive rod 29 is externally fixedly sleeved with a drive gear 211. A moving groove 3 is provided at the upper end of the processing table 1. A servo electric cylinder 31 is fixedly installed on the rear inner wall of the moving groove 3. The servo electric cylinder 31 uses a high-performance motor and lead screw transmission mechanism, providing precise position control and large thrust. The servo electric cylinder 31 is installed using bolt connections to ensure that it will not loosen or shift during operation.

[0035] One end of the piston rod of the servo electric cylinder 31 is fixedly connected to a moving block 32. The outside of the moving block 32 is slidably connected to the inner wall of the moving groove 3. The moving groove 3 has high machining precision requirements and its inner wall is smooth and flat to ensure that the moving block 32 can slide smoothly in it.

[0036] The upper end of the movable block 32 is fixedly connected to the movable base 33, and the lower end of the movable base 33 is in contact with the upper end of the processing table 1. The movable base 33 is stably guided and moved by the movable block 32.

[0037] The movable base 33 has symmetrically distributed connecting blocks 34 fixedly connected to both sides. A second rack 35 is fixedly connected to one end of the connecting block 34. The second rack 35 is fixed to the connecting block 34 by welding or bolting to ensure that it will not loosen or fall off during transmission.

[0038] The lower end of the second rack 35 contacts the upper end of the processing table 1, and the tooth surface of the second rack 35 meshes with the tooth surface of the drive gear 211. The upper end of the movable base 33 is fixedly connected with spring dampers 36 arranged in a rectangular array. The spring dampers 36 are composed of high-strength springs and dampers, and have good shock absorption effect. The number and specifications of the spring dampers 36 are designed according to the weight and stamping force of the lower die 37 to ensure that the impact on the lower die 37 and the movable base 33 during the stamping process can be effectively reduced.

[0039] The upper ends of multiple spring shock absorbers 36 are fixedly connected to lower molds 37, and the rear inner wall of the protective frame 2 is fixedly connected to a top plate 4. A hydraulic cylinder 5 is fixedly installed on the inner wall of the top plate 4. The shape and size of the lower mold 37 are designed according to the requirements of the stamping workpiece to ensure that it can cooperate with the upper mold 6 to complete the stamping operation. The top plate 4 is made of high-strength metal material and has good load-bearing capacity and stability.

[0040] One end of the piston rod of the hydraulic cylinder 5 is fixedly connected to the upper mold 6. The upper end of the upper mold 6 is fixedly connected to symmetrically distributed guide rods 7. One end of each guide rod 7 passes through and extends to the upper end of the top plate 4. The guide rods 7 and the top plate 4 are in a sliding fit, requiring high precision to ensure that the upper mold 6 does not wobble or shift during lifting. A limit device can be installed at the upper end of the guide rods 7 to prevent the upper mold 6 from rising or falling excessively.

[0041] The working process of this utility model:

[0042] Step 1: After the workpiece is stamped, the piston rod of the servo electric cylinder 31 is extended, which drives the moving base 33 to move via the moving block 32. The movement of the moving base 33 drives the second rack 35 to move via the connecting block 34. The movement of the second rack 35 drives the driving rod 29 to rotate via the meshing driving gear 211. The rotation of the driving rod 29 drives the driven pulley 26 to rotate via the cooperation of the driving pulley 210 and the transmission belt 27. The rotation of the driven pulley 26 drives the driven gear 28 to rotate via the driven rod 25. The rotation of the driven gear 28, in conjunction with the meshing first rack 24, causes the protective plate 22 to rise and move through the guide groove 21, thereby moving the moving base 33 out of the protective frame 2 to avoid it. The movement of the moving base 33 drives the lower mold 37 out of the protective frame 2, which makes it easier for the worker to remove the workpiece on the lower mold 37 and replace it with a new workpiece to be stamped.

[0043] Step two: After the workpiece is replaced, the piston rod of the servo electric cylinder 31 is activated to retract, thereby moving the lower mold 37 to below the upper mold 6 via the moving base 33. At the same time, the reverse movement of the second rack 35 moves the protective plate 22 downward and resets, thus cooperating with the protective frame 2 to surround and protect the outside of the stamping area, preventing workers from accidentally putting their hands into the stamping area. After the moving base 33 is reset, the extension of the piston rod of the hydraulic cylinder 5, guided by the guide rod 7, moves the upper mold 6 downward and moves to fit against the lower mold 37, thereby stamping the workpiece. The spring damper 36 provides a buffering and protective function for the lower mold 37.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision stamping die, comprising a processing table (1), characterized in that: The upper end of the processing table (1) is provided with a protective mechanism, which includes a protective frame (2). The lower end of the protective frame (2) is fixedly connected to the upper end of the processing table (1). The inner walls of both sides of the protective frame (2) are provided with symmetrically distributed guide grooves (21). The inner walls of both guide grooves (21) are slidably inserted with protective plates (22). The inner walls of the protective plates (22) are fixedly fitted with observation glass (23). The back of the protective plates (22) is fixedly connected to... A first rack (24) is symmetrically distributed. Both sides of the protective frame (2) are rotatably connected by bearings to driven rods (25) symmetrically distributed. A driven pulley (26) is fixedly sleeved on the outside of the driven rod (25). A transmission belt (27) is connected to the outside of the driven pulley (26). A driven gear (28) is fixedly sleeved on one end of the driven rod (25). The tooth surface of the driven gear (28) meshes with the tooth surface of the first rack (24).

2. The precision stamping die according to claim 1, characterized in that: The inner walls of the protective frame (2) are rotatably connected by bearings to symmetrically distributed active rods (29). An active pulley (210) is fixedly sleeved on the outside of the active rod (29), and the outside of the active pulley (210) is connected to the inside of the transmission belt (27).

3. The precision stamping die according to claim 2, characterized in that: One end of the active rod (29) is externally fixedly sleeved with an active gear (211), and the upper end of the processing table (1) is provided with a moving groove (3), and a servo electric cylinder (31) is fixedly installed on the rear inner wall of the moving groove (3).

4. A precision stamping die according to claim 3, characterized in that: One end of the piston rod of the servo electric cylinder (31) is fixedly connected to a moving block (32). The outside of the moving block (32) is slidably connected to the inner wall of the moving groove (3). The upper end of the moving block (32) is fixedly connected to a moving base (33). The lower end of the moving base (33) is in contact with the upper end of the processing table (1).

5. A precision stamping die according to claim 4, characterized in that: The movable base (33) is fixedly connected to two sides with symmetrically distributed connecting blocks (34). One end of the connecting block (34) is fixedly connected to a second rack (35). The lower end of the second rack (35) contacts the upper end of the processing table (1). The tooth surface of the second rack (35) meshes with the tooth surface of the drive gear (211). The upper end of the movable base (33) is fixedly connected to a spring shock absorber (36) arranged in a rectangular array.

6. A precision stamping die according to claim 5, characterized in that: The upper ends of the multiple spring shock absorbers (36) are fixedly connected to the lower mold (37), the rear inner wall of the protective frame (2) is fixedly connected to the top plate (4), and the inner wall of the top plate (4) is fixedly installed with a hydraulic cylinder (5).

7. A precision stamping die according to claim 6, characterized in that: One end of the piston rod of the hydraulic cylinder (5) is fixedly connected to the upper mold (6), and the upper end of the upper mold (6) is fixedly connected to symmetrically distributed guide rods (7). One end of each of the two guide rods (7) passes through and extends to the upper end of the top plate (4).

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