Double-spring electric hydraulic punch

Abstract

The utility model relates to a double-spring electric hydraulic punching machine, which comprises a punching frame, a punching fixed die and a base, and is characterized in that it further comprises a split oil cylinder, a piston, an oil cylinder adapter, a frame piston rod, a spring pressing ring, a punching movable die, a first compression spring, a piston rod adapter, a second compression spring and a piston rod, the piston rod is located in the punching frame, the piston rod adapter is fixed to the lower end of the piston rod, the upper end of the piston rod is fixed to the lower end of the frame piston rod, the lower end of the frame piston rod is provided with a limiting boss, the first compression spring is sleeved on the piston rod, the lower end of the first compression spring is abutted against the punching frame, and the upper end of the first compression spring is abutted against the bottom of the limiting boss; the second compression spring is sleeved on the frame piston rod, the lower end of the second compression spring is abutted against the top of the limiting ring, the spring pressing ring is fixed to the top of the frame piston rod, and the upper end of the second compression spring is abutted against the spring pressing ring. The utility model has good springback effect after punching.

Description

Technical Field

[0001] This utility model relates to a punching machine, and more particularly to a double-spring electric hydraulic punching machine, which is mainly used for punching holes in angle iron sheet metal. Background Technology

[0002] Electric hydraulic punching machines are mainly used for punching angle iron sheet metal. Currently, the structural design of commonly used electric hydraulic punching machines is not reasonable enough, making them inconvenient to use. When punching, especially when punching relatively thick plates, electric hydraulic punching machines often have poor springback, which affects the normal use of the electric hydraulic punching machine. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies in the existing technology and to provide a double-spring electric hydraulic punching machine with reasonable structural design, convenient use, and good springback effect after punching.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: The double-spring electric hydraulic punching machine includes a punching frame, a punching fixed mold, and a base. The punching frame is fixed on the base, and the punching fixed mold is installed on the punching frame. Its structural features include: a split-type hydraulic cylinder, a piston, a hydraulic cylinder adapter, a frame piston rod, a spring pressure ring, a punching movable mold, a first compression spring, a fixing nut, a piston rod connector, an adapter pipe, a quick-connect female connector, a second compression spring, and a piston rod. The piston rod is located inside the punching frame, the piston rod connector is fixed to the lower end of the piston rod, and the upper end of the piston rod is fixed to the lower end of the frame piston rod. A limiting boss is provided at the lower end of the frame piston rod. The first compression spring is sleeved outside the piston rod, and the lower end of the first compression spring abuts against the punching frame, while the upper end of the first compression spring abuts against the bottom of the limiting boss on the frame piston rod. The punching movable mold is fixed to the piston rod connector by a fixing nut. All fixing nuts are exposed outside the punching machine frame. The movable punching die is located directly above the fixed punching die, and the movable punching die and the fixed punching die cooperate with each other. The bottom of the hydraulic cylinder adapter is fixed to the top of the punching machine frame. A protruding limiting ring is provided on the inner wall of the middle part of the hydraulic cylinder adapter. The upper part of the machine frame piston rod passes through the limiting ring of the hydraulic cylinder adapter, and the top of the limiting boss of the machine frame piston rod abuts against the bottom of the limiting ring of the hydraulic cylinder adapter. The second compression spring is sleeved on the machine frame piston rod. At the top, the lower end of the second compression spring rests against the top of the limiting ring of the hydraulic cylinder adapter. The spring pressure ring is fixed to the top of the piston rod of the frame, and the upper end of the second compression spring rests against the spring pressure ring. The piston is installed inside the split-type hydraulic cylinder, which is fixed to the hydraulic cylinder adapter. The spring pressure ring, the top of the piston rod of the frame, and the top of the second compression spring are all covered inside the piston. The adapter pipe is fixed to the top of the split-type hydraulic cylinder, and the quick-connect female connector is fixed to the adapter pipe.

[0005] Preferably, the present invention also includes a scale plate, which is fixed on the punching machine frame.

[0006] Preferably, the present invention also includes a dust plug, which is installed on the quick-connect female connector.

[0007] Preferably, the present invention further includes a left baffle and a right baffle. The left baffle is fixed to the left side of the punching machine frame by a No. 5 hexagon socket head cap screw, and the right baffle is fixed to the right side of the punching machine frame by a No. 3 hexagon socket head cap screw. The left baffle and the right baffle are located on both sides of the punching movable die.

[0008] Preferably, the present invention also includes a No. 1 O-ring seal, wherein the inner wall of the limiting ring of the hydraulic cylinder adapter is provided with a groove for installing the No. 1 O-ring seal, the No. 1 O-ring seal is installed in the groove of the limiting ring of the hydraulic cylinder adapter, and the No. 1 O-ring seal is located between the limiting ring of the hydraulic cylinder adapter and the piston rod of the frame.

[0009] Preferably, the present invention also includes a retaining ring for the O-ring and a second O-ring. The upper part of the piston is provided with a groove for installing the retaining ring for the O-ring and the second O-ring. The retaining ring for the O-ring and the second O-ring are both installed in the groove of the piston. The retaining ring for the O-ring and the second O-ring are both located between the split cylinder and the piston.

[0010] Preferably, the present invention also includes a U-shaped pliers head rotating baffle, which is fixed to the hydraulic cylinder adapter by a No. 2 internal hexagonal head screw.

[0011] Preferably, the punching frame of this invention is fixed to the base by No. 4 internal hexagon head screws.

[0012] Preferably, the spring pressure ring of this invention is fixed to the top of the piston rod of the frame by a No. 1 internal hexagonal head screw.

[0013] Preferably, the punching fixing mold of this utility model is installed on the punching machine frame by a hexagonal socket set screw.

[0014] Compared with existing technologies, this utility model has the following advantages and effects: It features a reasonable structural design, ease of use, and can be operated with an external hydraulic pump. The external hydraulic pump connects to a quick-connect female connector, and can be manually operated by pressing a switch. The punching operation is effective, and the springback effect after punching is good. Alternatively, pressure can be manually released by pressing the pressure release button on the external hydraulic pump. It offers various portable combination options, allowing for convenient assembly according to different production needs, reducing production costs and improving interoperability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the drawings used in the description of the embodiments and / or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the double-spring electric hydraulic punching machine in this embodiment of the utility model.

[0017] Figure 2 This is a side view of the structure of the double-spring electric hydraulic punching machine in this embodiment of the present invention.

[0018] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the AA plane.

[0019] Figure 4 This is an exploded structural diagram of the double-spring electro-hydraulic punching machine in this embodiment of the present invention.

[0020] In the diagram: 1-Split-type hydraulic cylinder; 2-Piston; 3-Hydraulic cylinder adapter; 4-Frame piston rod; 5-Spring pressure ring; 6-Punching movable die; 7-Punching frame; 8-Punching fixed die; 9-No. 1 compression spring; 10-No. 1 socket head cap screw; 11-Socket head cap set screw; 12-No. 1 O-ring seal; 13-O-ring seal retainer; 14-No. 2 O-ring seal; 15-U-shaped clamp rotating stop; 16-No. 2 17-Hex socket head cap screw; 18-Fixing nut; 19-Left baffle; 20-Right baffle; 21-No. 3 hex socket head cap screw; 22-Piston rod connector; 23-No. 4 hex socket head cap screw; 24-Scale plate; 25-No. 5 hex socket head cap screw; 26-Adapter pipe; 27-Quick female connector; 28-Dust plug; 29-No. 2 compression spring; 30-Piston rod; 31-Limit ring; 41-Limit boss. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0022] Example

[0023] See Figures 1 to 4The double-spring electro-hydraulic punching machine in this embodiment includes a split-type cylinder 1, a piston 2, a cylinder adapter 3, a frame piston rod 4, a spring pressure ring 5, a punching movable die 6, a punching frame 7, a punching fixed die 8, a No. 1 compression spring 9, a No. 1 socket head cap screw 10, a socket head cap set screw 11, a No. 1 O-ring seal 12, a retaining ring for the O-ring seal 13, a No. 2 O-ring seal 14, a U-shaped clamp rotating baffle 15, a No. 2 socket head cap screw 16, a fixing nut 17, a left baffle 18, a right baffle 19, a No. 3 socket head cap screw 20, a piston rod connector 21, a base 22, a No. 4 socket head cap screw 23, a scale plate 24, a No. 5 socket head cap screw 25, an adapter pipe 26, a quick-connect female connector 27, a dust plug 28, a No. 2 compression spring 29, and a piston rod 30.

[0024] In this embodiment, the punching frame 7 is fixed to the base 22 by a No. 4 hex socket head cap screw 23, the punching die 8 is installed on the punching frame 7 by a hex socket head cap set screw 11, and the scale plate 24 is fixed to the punching frame 7. The U-shaped clamp head rotating baffle 15 is fixed to the hydraulic cylinder adapter 3 by a No. 2 hex socket head cap screw 16.

[0025] In this embodiment, the piston rod 30 is located inside the punching frame 7. The piston rod joint 21 is fixed to the lower end of the piston rod 30. The upper end of the piston rod 30 is fixed to the lower end of the frame piston rod 4. The lower end of the frame piston rod 4 is provided with a limiting boss 41. A compression spring 9 is sleeved on the piston rod 30. The lower end of the compression spring 9 abuts against the punching frame 7, and the upper end of the compression spring 9 abuts against the bottom of the limiting boss 41 of the frame piston rod 4.

[0026] In this embodiment, the punching movable die 6 is fixed to the piston rod joint 21 by the fixing nut 17. Both the punching movable die 6 and the fixing nut 17 are exposed outside the punching frame 7. The punching movable die 6 is located directly above the punching fixed die 8, and the punching movable die 6 and the punching fixed die 8 cooperate with each other. The cooperation between the punching movable die 6 and the punching fixed die 8 is common knowledge to those skilled in the art.

[0027] In this embodiment, the bottom of the hydraulic cylinder adapter 3 is fixed to the top of the punching machine frame 7. A protruding limiting ring 31 is provided on the inner wall of the middle part of the hydraulic cylinder adapter 3. The upper part of the frame piston rod 4 passes through the limiting ring 31 of the hydraulic cylinder adapter 3, and the top of the limiting boss 41 of the frame piston rod 4 rests on the bottom of the limiting ring 31 of the hydraulic cylinder adapter 3.

[0028] In this embodiment, the second compression spring 29 is sleeved on the upper part of the piston rod 4 of the frame. The lower end of the second compression spring 29 abuts against the top of the limiting ring 31 of the cylinder adapter 3. The spring pressure ring 5 is fixed to the top of the piston rod 4 of the frame by the first internal hexagonal head screw 10. The upper end of the second compression spring 29 abuts against the spring pressure ring 5.

[0029] In this embodiment, the piston 2 is installed inside the split-type hydraulic cylinder 1, which is fixed on the hydraulic cylinder adapter 3. The top of the spring pressure ring 5, the top of the frame piston rod 4, and the top of the second compression spring 29 are all covered inside the piston 2. The adapter pipe 26 is fixed on the top of the split-type hydraulic cylinder 1, the quick female connector 27 is fixed on the adapter pipe 26, and the dust plug 28 is installed on the quick female connector 27.

[0030] In this embodiment, the left baffle 18 is fixed to the left side of the punching machine frame 7 by a No. 5 socket head cap screw 25, and the right baffle 19 is fixed to the right side of the punching machine frame 7 by a No. 3 socket head cap screw 20. The left baffle 18 and the right baffle 19 are located on both sides of the punching movable die 6, respectively.

[0031] In this embodiment, the inner wall of the limiting ring 31 of the hydraulic cylinder adapter 3 is provided with a groove for installing the No. 1 O-ring seal 12. The No. 1 O-ring seal 12 is installed in the groove of the limiting ring 31 of the hydraulic cylinder adapter 3. The No. 1 O-ring seal 12 is located between the limiting ring 31 of the hydraulic cylinder adapter 3 and the piston rod 4 of the frame. The No. 1 O-ring seal 12 is used to seal the space between the limiting ring 31 of the hydraulic cylinder adapter 3 and the piston rod 4 of the frame.

[0032] In this embodiment, the upper part of the piston 2 is provided with a groove for installing the O-ring retainer 13 and the second O-ring 14. The O-ring retainer 13 and the second O-ring 14 are both installed in the groove of the piston 2. The O-ring retainer 13 and the second O-ring 14 are both located between the split cylinder 1 and the piston 2. The O-ring retainer 13 and the second O-ring 14 are used to seal the space between the split cylinder 1 and the piston 2.

[0033] The dual-spring electric hydraulic punching machine in this embodiment adopts a dual-spring design, which can increase the rebound force to meet the needs of different profiles. At the same time, it can effectively rebound after punching. The dual-spring design effectively improves the coordination of weight and large-diameter opening for different usage scenarios.

[0034] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A double-spring electric hydraulic punching machine, comprising a punching frame (7), a punching die (8), and a base (22), wherein the punching frame (7) is fixed on the base (22), and the punching die (8) is mounted on the punching frame (7), characterized in that: It also includes a split-type hydraulic cylinder (1), a piston (2), a hydraulic cylinder adapter (3), a frame piston rod (4), a spring pressure ring (5), a punching movable die (6), a first compression spring (9), a fixing nut (17), a piston rod connector (21), an adapter pipe (26), a quick female connector (27), a second compression spring (29), and a piston rod (30). The piston rod (30) is located inside the punching frame (7). The piston rod connector (21) is fixed to the lower end of the piston rod (30). The upper end of the piston rod (30) is fixed to the lower end of the frame piston rod (4). The lower end of the rod (4) is provided with a limiting boss (41). The first compression spring (9) is sleeved on the piston rod (30). The lower end of the first compression spring (9) abuts against the punching frame (7), and the upper end of the first compression spring (9) abuts against the bottom of the limiting boss (41) of the piston rod (4) of the frame. The punching movable die (6) is fixed to the piston rod joint (21) by a fixing nut (17). The punching movable die (6) and the fixing nut (17) are both exposed outside the punching frame (7). The punching movable die (6) is located directly above the punching fixed die (8), and the punching movable die... (6) and the punching die (8) are matched; the bottom of the hydraulic cylinder adapter (3) is fixed to the top of the punching frame (7), and a protruding limiting ring (31) is provided on the inner wall of the middle part of the hydraulic cylinder adapter (3). The upper part of the frame piston rod (4) passes through the limiting ring (31) of the hydraulic cylinder adapter (3), and the top of the limiting boss (41) of the frame piston rod (4) abuts against the bottom of the limiting ring (31) of the hydraulic cylinder adapter (3); the second compression spring (29) is sleeved on the upper part of the frame piston rod (4), and the lower end of the second compression spring (29) abuts against the hydraulic cylinder adapter (7). The top of the limiting ring (31) of the piston (4) is fixed to the top of the piston rod (4) of the frame, and the upper end of the second compression spring (29) rests on the spring ring (5); the piston (2) is installed in the split cylinder (1), the split cylinder (1) is fixed on the cylinder adapter (3), and the top of the spring ring (5), the piston rod (4) of the frame and the second compression spring (29) are all covered in the piston (2); the adapter pipe (26) is fixed on the top of the split cylinder (1), and the quick female connector (27) is fixed on the adapter pipe (26).

2. The double-spring electro-hydraulic punching machine according to claim 1, characterized in that: It also includes a scale plate (24), which is fixed on the punching frame (7).

3. The double-spring electro-hydraulic punching machine according to claim 1, characterized in that: It also includes a dust plug (28) which is mounted on the quick-connect female connector (27).

4. A double-spring electro-hydraulic punching machine according to claim 1, characterized in that: It also includes a left baffle (18) and a right baffle (19). The left baffle (18) is fixed to the left side of the punching frame (7) by a No. 5 socket head cap screw (25), and the right baffle (19) is fixed to the right side of the punching frame (7) by a No. 3 socket head cap screw (20). The left baffle (18) and the right baffle (19) are located on both sides of the punching movable die (6).

5. A double-spring electro-hydraulic punching machine according to claim 1, characterized in that: It also includes a No. 1 O-ring seal (12). The inner wall of the limiting ring (31) of the cylinder adapter (3) is provided with a groove for installing the No. 1 O-ring seal (12). The No. 1 O-ring seal (12) is installed in the groove of the limiting ring (31) of the cylinder adapter (3). The No. 1 O-ring seal (12) is located between the limiting ring (31) of the cylinder adapter (3) and the piston rod (4) of the frame.

6. A double-spring electro-hydraulic punching machine according to claim 1, characterized in that: It also includes a retaining ring (13) for O-ring seals and a second O-ring seal (14). The upper part of the piston (2) is provided with a groove for installing the retaining ring (13) for O-ring seals and the second O-ring seal (14). The retaining ring (13) for O-ring seals and the second O-ring seal (14) are both installed in the groove of the piston (2). The retaining ring (13) for O-ring seals and the second O-ring seal (14) are both located between the split cylinder (1) and the piston (2).

7. A double-spring electro-hydraulic punching machine according to claim 1, characterized in that: It also includes a U-shaped pliers rotating baffle (15), which is fixed to the cylinder adapter (3) by a No. 2 internal hexagonal head screw (16).

8. A double-spring electro-hydraulic punching machine according to claim 1, characterized in that: The punching frame (7) is fixed to the base (22) by a No. 4 internal hexagon head screw (23).

9. A double-spring electro-hydraulic punching machine according to claim 1, characterized in that: The spring coil (5) is fixed to the top of the frame piston rod (4) by a No. 1 internal hexagonal head screw (10).

10. A double-spring electro-hydraulic punching machine according to claim 1, characterized in that: The punching die (8) is mounted on the punching frame (7) by a hexagonal socket set screw (11).

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