Reciprocating punching mechanism with variable stroke

Abstract

The utility model discloses a stroke-variable reciprocating punching mechanism which comprises a fixing frame, a right-angle frame arranged in the fixing frame and rotating in the fixing frame, a swing arm arranged at the end of the right-angle frame and rotationally connected with the right-angle frame, a lifting plate arranged at the lower end of the fixing frame and a punch arranged at the lower end of the lifting plate. A supporting mechanism used for supporting the lower end of the right-angle frame is arranged in the fixing frame. During punching, the swing arm continuously swings up and down, the lifting plate drives the punch to ascend and descend to punch a metal plate, and meanwhile, the angle position of the positioning right-angle frame spaced by the supporting mechanism and the downward swinging angle of the swing arm are different, namely, the descending height of the lifting plate is different, and the lifting plate is matched with the positioning seat to continuously move leftwards; and the metal plates with different heights can be punched in sequence, continuous drilling can be conducted on the plate faces, with different heights, of the metal plates, and the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of stamping, specifically a reciprocating stamping mechanism with variable stroke. Background Technology

[0002] Stamping is a forming process that uses a press and dies to apply external force to metal or non-metal sheets, strips, tubes, and profiles, causing them to undergo plastic deformation or separation. Stamping is one of the main methods of material pressure processing or plastic forming. By applying pressure to the material through a die, it deforms or separates, thereby obtaining parts of the desired shape and size. Its principle is: at room temperature (cold stamping) or after heating (hot stamping), pressure is applied to the material using a die mounted on a press, causing it to plastically flow or fracture, forming the desired shape.

[0003] However, the punches in existing stamping mechanisms have fixed strokes. When punching holes in metal sheets of different heights on planes of different heights, after drilling one hole, the part needs to be flipped over before drilling another hole. This method is time-consuming and labor-intensive, and workers are easily scratched when flipping the parts. Utility Model Content

[0004] The purpose of this invention is to solve the above problems and provide a reciprocating stamping mechanism with variable stroke, which can realize the change of punch stroke and continuously drill holes on the surface of metal plates at different heights, thereby improving processing efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A reciprocating stamping mechanism with variable stroke includes a fixed frame, a right-angle frame disposed within the fixed frame and rotating within the fixed frame, a swing arm disposed at the end of the right-angle frame and rotatably connected to the right-angle frame, a lifting plate disposed at the lower end of the fixed frame, and a punch disposed at the lower end of the lifting plate. The fixed frame is provided with a support mechanism for supporting the lower end of the right-angle frame.

[0007] Furthermore, the upper end of the swing arm is provided with a column, and the column is connected to the upper end of the right-angle frame by a tension spring.

[0008] Furthermore, a limiting plate is provided at the upper end of the swing arm.

[0009] Furthermore, the fixed frame is provided with a drive mechanism for driving the swing arm to swing.

[0010] Furthermore, the driving mechanism includes a U-shaped frame that rotates on the upper end of the fixed frame and a first connecting rod. The upper end of the first connecting rod is rotatably connected to the closed end of the U-shaped frame, and the lower end of the first connecting rod is rotatably connected to the middle position of the swing arm.

[0011] Furthermore, the upper end of the fixed frame is provided with a motor that drives the U-shaped frame to rotate, and the output shaft of the motor is connected to the rotating shaft of the U-shaped frame via a belt.

[0012] Furthermore, the support mechanism includes a support wheel disposed within the fixed frame, and protrusions of different heights are spaced apart on the outer cylindrical surface of the support wheel. The lower end of the right-angle frame is provided with a support rod that cooperates with the protrusions.

[0013] Furthermore, the pivot of the U-shaped frame is connected to the pivot of the support wheel via a synchronous belt.

[0014] Furthermore, the lower end of the fixed frame is provided with a sliding groove, and the lifting plate is provided with a slider that cooperates with the sliding groove.

[0015] Furthermore, when the swing arm swings, the lifting plate rises and falls under the action of the second link.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model includes a fixed frame, a right-angle frame disposed within the fixed frame and rotating within the fixed frame, a swing arm disposed at the end of the right-angle frame and rotatably connected to the right-angle frame, a lifting plate disposed at the lower end of the fixed frame, and a punch disposed at the lower end of the lifting plate. The fixed frame is provided with a support mechanism for supporting the lower end of the right-angle frame. During punching, the swing arm swings up and down continuously, and the lifting plate drives the punch to rise and fall, punching holes in the metal plate. At the same time, the support mechanism positions the right-angle frame at intervals. The different downward swing angles of the swing arm result in different descent heights of the lifting plate. Combined with the continuous leftward movement of the positioning seat, it is possible to punch metal plates of different heights sequentially, continuously drilling holes on the surface of the metal plate at different heights, thus improving processing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is the right view of the present invention.

[0021] In the diagram: 1. Fixed frame; 2. Right-angle frame; 3. Swing arm; 4. Lifting plate; 5. Column; 6. Tension spring; 7. Limiting plate; 8. U-shaped frame; 9. First connecting rod; 10. Motor; 11. Belt; 12. Support wheel; 13. Protrusion; 14. Support rod; 15. Synchronous belt; 16. Slide groove; 17. Slider; 18. Second connecting rod; 19. Punch. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, 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. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0023] like Figure 1 and Figure 2 As shown, a variable stroke reciprocating stamping mechanism includes a fixed frame 1, a right-angle frame 2 disposed within and rotating within the fixed frame 1, a swing arm 3 disposed at the end of the right-angle frame 2 and rotatably connected to it, a lifting plate 4 disposed at the lower end of the fixed frame 1, and a punch 19 disposed at the lower end of the lifting plate 4. The fixed frame 1 is provided with a support mechanism for supporting the lower end of the right-angle frame 2. During operation, metal plates of different heights are placed on a positioning seat that can move left and right. The upper surface of the positioning seat has protrusions and grooves that fit tightly with the metal plates. During punching, the swing arm 3 continuously swings up and down, and the lifting plate 4 drives the punch 19 to rise and fall, punching holes in the metal plates. Simultaneously, the angle of the swing arm 3 swings downward at different intervals relative to the angle of the positioning right-angle frame 2, resulting in different descent heights of the lifting plate 4. Combined with the continuous leftward movement of the positioning seat, this allows for sequential punching of metal plates of different heights, enabling continuous drilling of the metal plates at different heights and improving processing efficiency.

[0024] When the right-angle frame 2 is in a lower position, the swing arm 3 swings downward at a smaller angle, and the lifting plate 4 drives the punch 19 to descend to a lower height, drilling holes on the higher surface of the metal plate; when the right-angle frame 2 is in a higher position, the swing arm 3 swings downward at a larger angle, and the lifting plate 4 drives the punch 19 to descend to a longer height, drilling holes on the lower surface of the metal plate.

[0025] like Figure 2As shown, the upper end of the swing arm 3 is provided with a column 5, which is connected to the upper end of the right-angle frame 2 by a tension spring 6. The upper end of the swing arm 3 is provided with a limiting plate 7, one end of which is fixed to the swing arm 3, and the other end of which contacts the right-angle frame 2. When the swing arm 3 swings upward, under the action of the tension spring 6, the limiting plate 7 contacts the right-angle frame 2, and the swing arm 3 will be level with the horizontal part of the right-angle frame 2, preventing the swing arm 3 from bending against the right-angle frame 2.

[0026] like Figure 1 As shown, the fixed frame 1 is equipped with a driving mechanism for driving the swing arm 3 to swing. The driving mechanism includes a U-shaped frame 8 and a first connecting rod 9 that are rotatably mounted on the upper end of the fixed frame 1. The upper end of the fixed frame 1 is provided with a groove. The open ends of the two side walls of the U-shaped frame 8 are rotatably connected to the inner wall of the groove of the fixed frame 1. The upper end of the first connecting rod 9 is rotatably connected to the closed end of the U-shaped frame 8. The lower end of the first connecting rod 9 is rotatably connected to the middle position of the swing arm 3. The middle position of the swing arm 3 has a through hole. The lower end of the first connecting rod 9 extends into the through hole and is rotatably connected to the fixed shaft in the through hole.

[0027] like Figure 1 As shown, the upper end of the fixed frame 1 is provided with a motor 10 that drives the U-shaped frame 8 to rotate, and the output shaft of the motor 10 is connected to the rotating shaft of the U-shaped frame 8 through a belt 11.

[0028] like Figure 2 As shown, the support mechanism includes a support wheel 12 disposed within the fixed frame 1. The outer cylindrical surface of the support wheel 12 is provided with protrusions 13 of varying heights at intervals. The lower end of the right-angle frame 2 is provided with a support rod 14 that cooperates with the protrusions 13. When the swing arm 3 swings, the support wheel 12 rotates accordingly, and the support rod 14 contacts the protrusions 13 of varying heights at intervals. This causes a change in the coverage of the swing arm 3's pivot. If the height of the first connecting rod 9's descent is not maintained, the downward swing angle of the swing arm 3 will change, thereby achieving different lifting heights for the lifting plate 4.

[0029] like Figure 1 As shown, the shaft of the U-shaped frame 8 is connected to the shaft of the support wheel 12 via a synchronous belt 15.

[0030] like Figure 1 As shown, the lower end of the fixed frame 1 is provided with a sliding groove 16, and the lifting plate 4 is provided with a slider 17 that cooperates with the sliding groove 16. When the swing arm 3 swings, the lifting plate 4 rises and falls under the action of the second connecting rod 18. The upper end of the second connecting rod 18 is rotatably connected to the end of the swing arm 3, and the lower end of the second connecting rod 18 is rotatably connected to the lifting plate 4. When the swing arm 3 swings up and down, the lifting plate 4 rises and falls continuously under the action of the second connecting rod 18.

[0031] In the description of this utility model, it should be noted that the terms "left", "right", "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A variable stroke reciprocating punch mechanism, characterized by, The utility model relates to a kind of stamping machine, including fixed frame (1), be set in the fixed frame (1) and rotate in fixed frame (1) right-angle frame (2), be set in the end of the right-angle frame (2) and between right-angle frame (2) rotation connection swing arm (3), be set in the lifting plate (4) of the lower end of the fixed frame (1) and be set in the punch (19) of the lower end of the lifting plate (4), the fixed frame (1) is equipped with for supporting the support mechanism of the lower end of the right-angle frame (2).

2. A variable stroke, reciprocating ram mechanism as claimed in claim 1 wherein, The upper end of the swing arm (3) is provided with a stand (5), and the stand (5) is connected with the upper end of the right-angle frame (2) through a tension spring (6).

3. A variable stroke, reciprocating ram mechanism as claimed in claim 2, wherein, The upper end of the swing arm (3) is provided with a limit plate (7).

4. A variable stroke, reciprocating ram mechanism as claimed in claim 1 wherein, The fixed frame (1) is provided with a driving mechanism for driving the swing of the swing arm (3).

5. A variable stroke, reciprocating ram mechanism as claimed in claim 4 wherein, The driving mechanism includes a U-shaped frame (8) arranged on the upper end of the fixed frame (1) and a first connecting rod (9), the upper end of the first connecting rod (9) is rotatably connected with the closed end of the U-shaped frame (8), and the lower end of the first connecting rod (9) is rotatably connected with the middle position of the swing arm (3).

6. A variable stroke, reciprocating ram mechanism as claimed in claim 5 wherein, The upper end of the fixed frame (1) is provided with a motor (10) for driving the rotation of the U-shaped frame (8), and the output shaft of the motor (10) is connected with the rotating shaft of the U-shaped frame (8) through a belt (11).

7. A variable stroke, reciprocating ram mechanism as claimed in claim 6 wherein, The support mechanism includes a support wheel (12) arranged in the fixed frame (1), the outer cylindrical surface of the support wheel (12) is provided with protrusions (13) with different heights at intervals, and the lower end of the right-angle frame (2) is provided with a support rod (14) matched with the protrusions (13).

8. A variable stroke, reciprocating ram mechanism as claimed in claim 7, wherein, The rotating shaft of the U-shaped frame (8) is connected with the rotating shaft of the support wheel (12) through a synchronous belt (15).

9. A variable stroke, reciprocating ram mechanism as claimed in claim 1 wherein, The lower end of the fixed frame (1) is provided with a sliding groove (16), and the lifting plate (4) is provided with a sliding block (17) matched with the sliding groove (16).

10. A variable stroke, reciprocating ram mechanism as claimed in claim 9, wherein, The lifting plate (4) is lifted under the action of the second connecting rod (18) when the swing arm (3) swings.

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