Ejection structure for sheet metal part machining

Abstract

The utility model discloses an ejection structure for sheet metal part machining, and relates to the technical field of sheet metal part stamping. The device comprises a bottom plate, a support is fixedly installed on the upper side of the bottom plate, a fixing cylinder is fixedly installed on the upper side of the support, an automatic push rod is arranged in the fixing cylinder, the automatic push rod is locked and fixed to the inner side of the fixing cylinder through a screw, and the output end of the automatic push rod is provided with a thread. An upper die assembly capable of conducting punching and die pressing on the sheet metal part is arranged on the side face of the automatic push rod, and a lower die assembly capable of being matched with punching and die pressing of the sheet metal part is arranged on the inner side of the clamping frame. The elastic buffering and stable forming effects can be achieved, the punching block is matched with the supporting spring in the movable cavity, the upper die block elastically supports a sheet metal part firstly and then rigidly extrudes the sheet metal part in the die pressing process, deformation caused by instant impact is avoided, meanwhile, the restraining rod ensures linear motion of the punching block, and the forming precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal stamping technology, specifically to an ejector structure for sheet metal processing. Background Technology

[0002] In sheet metal processing, punching and die-cutting are common forming processes. However, in existing technologies, traditional ejection structures have the following problems:

[0003] First, the lack of an elastic buffer mechanism during die forming makes sheet metal parts susceptible to deformation or surface damage from rigid impacts. Second, waste material after punching requires manual cleaning, which is inefficient and poses safety hazards. Furthermore, the lack of integration between die forming and punching functions results in limited functionality of the current equipment. To address these issues, there is an urgent need for a sheet metal processing structure that integrates punching, die forming, waste material collection, and automatic ejection functions to improve processing accuracy, safety, and production efficiency. Therefore, an ejection structure for sheet metal processing is proposed. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of ejection structure for sheet metal processing. This utility model provides an ejection structure for sheet metal processing.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] An ejector structure for sheet metal processing includes a base plate, a bracket fixedly mounted on the upper side of the base plate, a fixed cylinder fixedly mounted on the upper side of the bracket, an automatic push rod disposed inside the fixed cylinder and fixedly secured to the inner side of the fixed cylinder by screws, the automatic push rod being a push rod with a threaded output end, a clamping frame fixedly mounted on the side of the bracket and bolts disposed on the side, an upper die assembly for punching and pressing sheet metal parts disposed on the side of the automatic push rod, and a lower die assembly for punching and pressing sheet metal parts disposed on the inner side of the clamping frame.

[0007] Furthermore, the upper mold assembly includes a mounting block disposed on the side of the output end of the automatic push rod and disposed inside the fixed cylinder. The upper side of the mounting block has a mounting groove and the output end of the automatic push rod is threadedly installed inside the mounting groove. The lower side of the mounting block has a movable cavity. A punch block is movably installed inside the movable cavity and the punch block extends out of the movable cavity. Constraint rods are fixedly installed in a circumferential array at equal intervals on the wall of the movable cavity and the constraint rods pass through the punch block. A support spring is fixedly connected between the side of the punch block and the top wall of the movable cavity.

[0008] Furthermore, the side of the punch block corresponding to the protruding part is provided with a mating thread, a connecting block is provided on the lower side of the punch block, a connecting groove is provided on the upper side of the connecting block, and the punch block is installed in the connecting groove by the mating thread. The upper module is fixedly installed on the lower side of the connecting block.

[0009] Furthermore, the lower mold assembly includes a bottom barrel block located inside the clamping frame and positioned on the upper side of the base plate. A punching groove is formed on the upper side of the bottom barrel block, and a support rod is movably installed inside the punching groove. A support cylinder is fixedly connected between the bottom side of the support rod and the bottom wall of the punching groove. A material collection cavity is formed on the wall of the punching groove and extends through the bottom barrel block to its lower interior. A movable block is movably installed on the side of the bottom barrel block corresponding to the material collection cavity. An air groove is formed on the wall of the punching groove corresponding to the material collection cavity, extending through the bottom barrel block.

[0010] Furthermore, the side of the support rod is provided with a slot, and the wall of the punching groove is provided with a slot corresponding to the lower position of the material collection cavity and the air groove. A retaining ring is movably installed inside the slot. The bottom wall of the punching groove is provided with a mating groove that penetrates the bottom barrel block. A trigger rod is movably installed inside the mating groove, and part of the trigger rod extends out of the interior of the mating groove. Support blocks are symmetrically fixedly connected between the side of the trigger rod and the wall of the mating groove.

[0011] Furthermore, a lower module is provided on the upper side of the clamping frame corresponding to the position of the upper module, and a fixing frame is fixedly installed on the lower side of the lower module and the fixing frame is sleeved on the side of the clamping frame. A locking block is threaded through the side of the fixing frame.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model can achieve elastic buffering and stable molding effect. Through the cooperation of the punch block and the support spring in the movable cavity, the upper module first elastically supports the sheet metal part and then switches to rigid extrusion during the pressing process, avoiding deformation caused by instantaneous impact. At the same time, the constraint rod ensures the linear movement of the punch block and improves the molding accuracy.

[0014] 2. This utility model can achieve automatic waste collection. After punching, the waste is temporarily stored by the support rod. Airflow is introduced into the air groove to blow the waste into the collection chamber. When the trigger rod resets the support rod, the retaining ring disengages from the retaining groove, realizing centralized cleaning of waste and reducing manual intervention.

[0015] 3. This utility model can achieve rapid demolding and multi-functional adaptability. The trigger rod pushes the support rod out of the sheet metal part through the elastic deformation of the support block, simplifying the demolding process. The upper and lower modules can be quickly replaced to adapt to different shape processing needs.

[0016] 4. This utility model can achieve structural integration and efficient operation. The fixed cylinder and clamping frame enable modular installation of automatic push rods and molds. The punching and pressing functions can be switched conveniently. The overall structure is compact and suitable for diverse sheet metal processing scenarios. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is an exploded structural diagram of the present invention;

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 This is a partial exploded view of the upper mold assembly of this utility model;

[0021] Figure 5 This is a utility model Figure 3 Enlarged structural diagram at point A;

[0022] Figure 6 This is a partial exploded cross-sectional structural diagram of the lower mold assembly of this utility model;

[0023] Figure 7 This is a utility model Figure 3 A magnified structural diagram at point B in the middle.

[0024] Reference numerals: 1. Base plate; 11. Bracket; 12. Fixed cylinder; 13. Automatic push rod; 14. Clamping frame; 2. Upper mold assembly; 21. Mounting block; 211. Mounting groove; 212. Movable cavity; 22. Punching block; 221. Constraint rod; 222. Support spring; 223. Mating thread; 23. Connecting block; 231. Connecting groove; 24. Upper module; 3. Lower mold assembly; 31. Bottom barrel block; 32. Punching groove; 321. Support rod; 322. Slot; 323. Support cylinder; 33. Material collection cavity; 331. Movable block; 34. Air groove; 35. Slot; 351. Snap ring; 36. Connecting groove; 361. Trigger rod; 362. Support block; 37. Lower module; 371. Fixed frame; 372. Locking block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Example: Figures 1 to 3 As shown, an ejector structure for sheet metal processing includes a base plate 1, which is a rectangular plate with rectangular grooves on its side. It can be loosely fixed to the side of a workbench by screws. Specifically, a bracket 11 is fixedly installed on the upper side of the base plate 1. The bracket 11 is an "L"-shaped frame. A fixing cylinder 12 is fixedly installed on the upper side of the bracket 11. The fixing cylinder 12 is a hollow cylindrical frame. An automatic push rod 13 is provided inside the fixing cylinder 12 and is fixed to the inner side of the fixing cylinder 12 by screws. The automatic push rod 13 is a push rod with threads on its output end. It can be an electric push rod or a hydraulic push rod, which can be used to adapt to sheet metal parts of different materials. A clamping frame 14 is fixedly installed on the side of the bracket 11. The clamping frame 14 is an open "U"-shaped frame with bolts on its side. It can be rotated to open the hydraulic clamping of subsequent parts and is fixed by bolts.

[0030] More specifically, after inserting the required model of automatic push rod 13 into the fixed cylinder 12 and locking it with screws, the subsequent corresponding parts are installed on the side of the output end of the automatic push rod 13 for use. Then, the clamping frame 14 is opened and the subsequent parts are placed inside it. After closing the clamping frame 14, the clamping frame 14 is locked with bolts.

[0031] The side of the automatic push rod 13 is provided with an upper die assembly 2 for punching and pressing sheet metal parts, such as... Figures 3 to 5As shown, specifically, the upper mold assembly 2 includes a mounting block 21 disposed on the side of the output end of the automatic push rod 13, and the mounting block 21 is disposed inside the fixed cylinder 12. The mounting block 21 is a cylindrical block, and a mounting groove 211 is formed on the upper side of the mounting block 21. The output end of the automatic push rod 13 is threaded into the mounting groove 211. The mounting groove 211 is a cylindrical threaded groove. A movable cavity 212 is formed on the lower side of the mounting block 21. The movable cavity 212 is a cylindrical cavity with a convex cross-section. A punched block 22 is movably mounted inside the movable cavity 212, and part of the punched block 22 extends out of the movable cavity 212. The punched block 22 is a cylindrical block with a continuous stepped cross-section. The walls of the movable cavity 212 are circumferentially arrayed with equidistant fixed blocks. A constraint rod 221 is fixedly installed and passes through the punch block 22. The constraint rod 221 is a cylindrical rod. A support spring 222 is fixedly connected between the side of the punch block 22 and the top wall of the movable cavity 212. A mating thread 223 is provided on the side of the punch block 22 corresponding to the protruding part. The mating thread 223 is a circular thread. A connecting block 23 is provided on the lower side of the punch block 22. The connecting block 23 is a cylindrical block. A connecting groove 231 is provided on the upper side of the connecting block 23. The punch block 22 is threaded into the connecting groove 231 through the mating thread 223. The connecting groove 231 is a cylindrical thread groove. An upper module 24 is fixedly installed on the lower side of the connecting block 23. The upper module 24 can be a mold block of different types and shapes.

[0032] More specifically, during the stamping process, the connecting slot 231 is threaded into the mating thread 223, allowing the connecting block 23 to drive the upper module 24 to be fixedly installed on the side of the mating thread 223. When the automatic push rod 13 pushes the upper module 24 to extrude the sheet metal part, the punching block 22 can be constrained and guided by the constraint rod 221 inside the movable cavity 212 to deform the sliding extrusion support spring 222, so that the upper module 24 is elastically supported until the connecting block 23 is pressed against the side of the mounting block 21 and forms a fixed support. This process is effective during the stamping of the sheet metal part. With a certain buffering effect, the sheet metal part can be elastically supported and squeezed to fix its position and then the support and squeezed shape can be fixed. When punching and opening, the connecting block 23 is removed from the side of the punching block 22, leaving only the mounting block 21 threaded and installed on the side of the output end of the automatic push rod 13. When the automatic push rod 13 is pushed, it squeezes and opens the sheet metal part through the punching block 22. Similarly, the punching block 22 is first elastically supported and squeezed to fix the sheet metal part by the support spring 222 until the punching block 22 slides to the top wall of the movable cavity 212 to fix and support the sheet metal part to open the hole.

[0033] The inner side of the clamping frame 14 is provided with a lower die assembly 3 that can cooperate with the punching and pressing of sheet metal parts, such as... Figure 3 , Figure 6 and Figure 7As shown, specifically, the lower mold assembly 3 includes a bottom barrel block 31 located inside the clamping frame 14 and positioned on the upper side of the base plate 1. The bottom barrel block 31 is a cylindrical block, and a punching groove 32 is formed on the upper side of the bottom barrel block 31. The punching groove 32 is a cylindrical groove, and a support rod 321 is movably installed inside the punching groove 32. The support rod 321 is a cylindrical rod, and a support cylinder 323 is fixedly connected between the bottom side of the support rod 321 and the bottom wall of the punching groove 32. The support cylinder 323 is a corrugated cylinder made of elastic material, and a material collection cavity is formed on the wall of the punching groove 32. 33. The collecting chamber 33 extends through the bottom barrel block 31 to its lower interior. The collecting chamber 33 is a "C"-shaped cavity. A movable block 331 is movably installed on the side of the bottom barrel block 31 corresponding to the position of the collecting chamber 33. The movable block 331 is a rectangular block that can be manually opened and closed. An air groove 34 is opened on the wall of the punching groove 32 corresponding to the position of the collecting chamber 33, penetrating the bottom barrel block 31. The air groove 34 can be connected to an external air pipe to cooperate with an air pump for ventilation. A slot 322 is opened on the side of the support rod 321. The slot 322 is an annular groove. The wall of the punching groove 32 corresponds to the collecting chamber. A slot 35 is provided at the lower position of slots 33 and 34. The slot 35 is a circular annular groove with a convex cross-section. A retaining ring 351 is movably installed inside the slot 35. The retaining ring 351 is a circular annular block of elastic material with a convex cross-section. A mating groove 36 is provided on the bottom wall of the punching slot 32, penetrating the bottom barrel block 31. The mating groove 36 is an "L"-shaped groove. A trigger rod 361 is movably installed inside the mating groove 36, and part of the trigger rod 361 extends out of the interior of the mating groove 36. The trigger rod 361 is an "L"-shaped rod. The side of the trigger rod 361 and the mating groove 36 are connected. Support blocks 362 are symmetrically fixedly connected between the walls. The support blocks 362 are "W"-shaped blocks made of elastic material. A lower module 37 is set on the upper side of the clamping frame 14 corresponding to the position of the upper module 24. The lower module 37 is a mold with a circular groove on the bottom side. Different types and shapes of mold blocks can be used. A fixing frame 371 is fixedly installed on the lower side of the lower module 37 and the fixing frame 371 is sleeved on the side of the clamping frame 14. The fixing frame 371 is a "C"-shaped frame. A locking block 372 is threaded through the side of the fixing frame 371. The locking block 372 is a cylindrical threaded block.

[0034] More specifically, during the stamping process, the fixing bracket 371 is fitted onto the side of the clamping bracket 14, and the lower module 37 is locked in place by the locking block 372. The lower module 37 cooperates with the upper module 24 to form the shape of the sheet metal part. After stamping, the trigger rod 361 is manually or electrically lifted. The trigger rod 361 slides inside the mating groove 36, pressing and deforming the support block 362. After the trigger rod 361 slides into the punching groove 32, it pushes the support rod 321 upward, causing the support rod 321 to slide out of the punching groove 32 to eject the sheet metal part. This facilitates demolding and material removal of the sheet metal part after stamping. During the stamping and drilling process, the lower module 37 is disassembled and the bottom barrel block 31 is fixed and installed through the clamping bracket 14. The punching block 22 presses and punches the sheet metal part. The punching block 22 slides into the punching groove 32, and the support rod 321 passes through... The support cylinder 323 provides elastic support for the sheet metal part. At this time, the support rod 321 slides downward inside the punching groove 32. The slot 322 corresponds to the slot 35. The retaining ring 351 is elastically engaged inside the slot 322 to limit the support rod 321. At this time, the punching block 22 is pulled back to its original position by the automatic push rod 13. The waste material after punching is located on the upper side of the support rod 321. Air is supplied by the air pump and blown out with a certain pressure gas through the air groove 34. The gas blows the waste material into the collection chamber 33. The trigger rod 361 is lifted manually or electrically, and the trigger rod 361 can push the support rod 321 to slide upward. The retaining ring 351 is squeezed and deformed, slides into the slot 35, and disengages from the slot 322. The support rod 321 is reset by the elastic support of the support cylinder 323. In this way, the waste material can be collected in a concentrated manner after punching without the need for manual cleaning of the waste material after punching.

[0035] In summary: When pressing sheet metal parts, upper modules 24 and lower modules 37 of different specifications and shapes can be installed on the side of punch block 22 and the side of clamping frame 14. The sheet metal parts can be pressed by pushing air groove 34 and lower module 37 with automatic push rod 13. The punch block 22 can provide elastic support for upper module 24 and then provide fixed support. The trigger rod 361 can lift and push support rod 321 to eject sheet metal parts for demolding.

[0036] When punching holes in sheet metal parts, the upper module 24 and the lower module 37 can be disassembled and used. The punching block 22 can be pushed by the automatic push rod 13 to cooperate with the support rod 321 to elastically support the sheet metal parts for extrusion and hole-making operations. After the hole is made, the support rod 321 can be fixed in position by the retaining ring 351. The airflow guided by the air groove 34 blows the waste material into the collection chamber 33 for centralized collection. Then, the support rod 321 can be reset by lifting the trigger rod 361.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An ejector structure for sheet metal processing, characterized in that: Includes a base plate (1), a bracket (11) is fixedly installed on the upper side of the base plate (1), a fixed cylinder (12) is fixedly installed on the upper side of the bracket (11), an automatic push rod (13) is provided inside the fixed cylinder (12), and the automatic push rod (13) is fixedly locked to the inner side of the fixed cylinder (12) by screws. The automatic push rod (13) is a push rod with a threaded output end. A clamping frame (14) is fixedly installed on the side of the bracket (11), and bolts are provided on the side. An upper mold assembly (2) for punching and pressing sheet metal parts is provided on the side of the automatic push rod (13), and a lower mold assembly (3) for punching and pressing sheet metal parts is provided on the inner side of the clamping frame (14).

2. The ejector structure for sheet metal processing according to claim 1, characterized in that: The upper mold assembly (2) includes a mounting block (21) disposed on the side of the output end of the automatic push rod (13) and the mounting block (21) is disposed inside the fixed cylinder (12). The upper side of the mounting block (21) is provided with a mounting groove (211) and the output end of the automatic push rod (13) is threadedly installed inside the mounting groove (211). The lower side of the mounting block (21) is provided with a movable cavity (212). A punch block (22) is movably installed inside the movable cavity (212) and a portion of the punch block (22) extends out of the movable cavity (212). Constraint rods (221) are fixedly installed in a circumferential array at equal intervals on the wall of the movable cavity (212) and the constraint rods (221) penetrate the punch block (22). A support spring (222) is fixedly connected between the side of the punch block (22) and the top wall of the movable cavity (212).

3. The ejector structure for sheet metal processing according to claim 2, characterized in that: The side of the punch block (22) corresponding to the protruding part is provided with a mating thread (223). A connecting block (23) is provided on the lower side of the punch block (22). A connecting groove (231) is provided on the upper side of the connecting block (23), and the punch block (22) is threadedly installed in the connecting groove (231) through the mating thread (223). An upper module (24) is fixedly installed on the lower side of the connecting block (23).

4. The ejector structure for sheet metal processing according to claim 3, characterized in that: The lower mold assembly (3) includes a bottom barrel block (31) located inside the clamping frame (14) and the bottom barrel block (31) is located on the upper side of the base plate (1). A punching groove (32) is provided on the upper side of the bottom barrel block (31). A support rod (321) is movably installed inside the punching groove (32). A support cylinder (323) is fixedly connected between the bottom side of the support rod (321) and the bottom wall of the punching groove (32). A material collection cavity (33) is provided on the wall of the punching groove (32) and the material collection cavity (33) runs through the bottom barrel block (31) to its lower inner side. A movable block (331) is movably provided on the side of the bottom barrel block (31) corresponding to the position of the material collection cavity (33). An air groove (34) is provided on the wall of the punching groove (32) corresponding to the position of the material collection cavity (33) and runs through the bottom barrel block (31).

5. The ejector structure for sheet metal processing according to claim 4, characterized in that: The support rod (321) has a slot (322) on its side. The wall of the punched groove (32) has a slot (35) at a lower position corresponding to the material collection chamber (33) and the air groove (34). A retaining ring (351) is movably installed inside the slot (35). The bottom wall of the punched groove (32) has a mating groove (36) that penetrates the bottom barrel block (31). A trigger rod (361) is movably installed inside the mating groove (36), and part of the trigger rod (361) extends out of the interior of the mating groove (36). A support block (362) is symmetrically fixedly connected between the side of the trigger rod (361) and the wall of the mating groove (36).

6. The ejector structure for sheet metal processing according to claim 5, characterized in that: The clamping frame (14) has a lower module (37) on its upper side corresponding to the position of the upper module (24). A fixing frame (371) is fixedly installed on the lower side of the lower module (37) and the fixing frame (371) is sleeved on the side of the clamping frame (14). A locking block (372) is threaded through the side of the fixing frame (371).

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