Positioning device for metal plate stamping

Abstract

The utility model belongs to the technical field of metal plate machining, and particularly relates to a positioning device for metal plate stamping, which comprises a base, a support is arranged at the top of the base, and a positioning and fixing mechanism is arranged on the inner side of the support. The positioning and fixing mechanism comprises driving rods, the driving rods fixedly sleeve the outer sides of the fixing frames, the driving rods are located behind the hydraulic cylinders, the fixing frames are symmetrically arranged on the top of the base, rotating shafts penetrating through the fixing frames are rotationally installed on one sides of the fixing frames, and the ends, close to the driving rods, of the rotating shafts are sleeved with gears. A plurality of tooth grooves matched and meshed with the gear are symmetrically formed in the outer side of the driving rod; punching force of the punch is driven by the hydraulic cylinder to be converted into driving force of the supporting plate and the clamping plate, clamping and positioning of a metal plate are achieved, punching displacement is avoided, machining quality is guaranteed, the position of the sliding block can be adjusted according to needs, the moving distance of the clamping plate can be changed, plates of different widths can be adapted, meanwhile, power source arrangement is reduced, energy consumption is reduced, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of metal sheet processing technology, and in particular to a positioning device for stamping metal sheets. Background Technology

[0002] Currently, metal sheets are mainly formed through forging, rolling or casting processes, and are widely used in various fields due to their performance advantages. Since different application scenarios have different requirements for the shape, precision and function of metal sheets, they often need to be stamped to achieve specific properties. Metal stamping is a forming process that uses a press and a die to apply external force to the sheet, causing it to undergo plastic deformation or separation, thereby obtaining a workpiece with the target shape and size.

[0003] However, existing metal sheet stamping equipment has significant technical bottlenecks in the positioning and fixing process: most equipment uses positioning pins or hydraulically driven grippers to achieve limiting; the positioning pin solution relies on pre-machined positioning holes in the sheet, which is only suitable for workpieces with regular shapes that allow drilling. This not only requires additional positioning hole machining processes, increasing production costs, but also requires manual alignment of the pins, increasing the workload of workers; although the hydraulic gripper solution can achieve automatic clamping, it requires a separate hydraulic station and other drive sources, resulting in increased energy consumption, inconvenience in use, and poor practicality. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A positioning device for stamping metal sheets includes a base, a bracket on the top of the base, hydraulic cylinders symmetrically arranged on the top of the bracket, a punch connected to the telescopic end of the hydraulic cylinders inside the bracket, a mold embedded in the top of the base, and a positioning and fixing mechanism inside the bracket.

[0007] The positioning and fixing mechanism includes a drive rod, which is fixedly sleeved on the outside of the fixing frame and located behind the hydraulic cylinder. The base is symmetrically provided with fixing frames on the top. A rotating shaft that passes through the fixing frame is rotatably installed on one side of the fixing frame. A gear is sleeved on one end of the rotating shaft near the drive rod. Several tooth grooves that are adapted to and mesh with the gear are symmetrically opened on the outside of the drive rod.

[0008] As an improved technical solution, the positioning and fixing mechanism further includes a turntable, which is fixedly sleeved on the outer side of the rotating shaft away from the gear. The turntable is located on the side of the fixing frame away from the gear. A groove is opened at one end of the turntable, and a screw is rotatably installed in the groove. A threaded slider is sleeved on the outer side of the screw. One end of the screw extends to the outside of the turntable and is connected to a handle. A connecting rod is rotatably connected to one side of the slider. A push rod is hinged to one end of the connecting rod. A support plate is connected to one end of the push rod. A clamping plate is provided on the side of the support plate away from the push rod. Guide rods are symmetrically provided on the side of the clamping plate near the guide rod. One end of the guide rod passes through the support plate and is connected to a stop. A spring is sleeved on the outer side of the guide rod between the support plate and the stop. A protective pad is detachably installed on the side of the clamping plate away from the support plate, and the protective pad is connected to the clamping plate through a connecting assembly.

[0009] As an improved technical solution, a guide block is fixedly connected to the bottom of the push rod away from the support plate, and a guide groove adapted to the guide block is symmetrically opened on the top of the base. The guide block is T-shaped.

[0010] As an improved technical solution, a limiting frame is fixedly installed on the top of the fixed frame. The limiting frame is located outside the drive rod, and the upper end of the limiting frame is fixedly connected to the bracket.

[0011] As an improved technical solution, the drive rod has a U-shaped structure, the fixed frame and the limiting frame are both L-shaped structures, and the rotating shaft is rotatably connected to the fixed frame through a bearing.

[0012] As an improved technical solution, the connecting component includes a fixing block, which is fixedly connected to the protective pad, and one end of the fixing block passes through the clamping plate. The top of the clamping plate is provided with a magnetic groove, and a rod is provided in the magnetic groove. The lower end of the rod passes through the fixing block.

[0013] As an improved technical solution, the protective pad is made of rubber, and the upper end of the insertion rod is connected to a magnetic handle that is compatible with the magnetic groove, and the magnetic handle is attracted to the inner wall of the magnetic groove.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. This utility model utilizes the force of the hydraulic cylinder driving the punch to move up and down for stamping, which is converted into the force driving the support plate and clamping plate to clamp and fix the metal plate, thereby achieving positioning and avoiding displacement during stamping that affects the processing quality. Furthermore, the position of the slider can be adjusted according to actual needs to change the distance the clamping plate moves, making it suitable for positioning plates of different widths. It also reduces the need for a power source, lowers energy consumption, and is more convenient to use.

[0016] 2. This utility model allows for convenient and quick disassembly and assembly of the protective pad for replacement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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. Wherein:

[0018] Figure 1 This is a schematic diagram of the overall structure of a positioning device for stamping metal sheets according to the present invention.

[0019] Figure 2 This is a schematic diagram of the structure between the turntable and the support plate of a positioning device for stamping metal sheets according to this utility model.

[0020] Figure 3 This is a schematic diagram of the structure between the drive rod and the fixing frame of a positioning device for stamping metal sheets according to this utility model.

[0021] Figure 4 This is a partial cross-sectional structural diagram of the clamping plate of a positioning device for stamping metal sheets according to the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Base; 2. Bracket; 3. Hydraulic cylinder; 4. Punch; 5. Mold; 6. Drive rod; 7. Fixing frame; 8. Rotating shaft; 9. Gear; 10. Turntable; 11. Screw; 12. Slider; 13. Limiting frame; 14. Connecting rod; 15. Push rod; 16. Guide block; 17. Support plate; 18. Clamping plate; 19. Guide rod; 20. Stop block; 21. Spring; 22. Protective pad; 23. Fixing block; 24. Insert rod; 25. Magnetic handle; 26. Slide groove; 27. Magnetic groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0027] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] like Figure 1 - Figure 3 As shown in the figure, this embodiment provides a positioning device for stamping metal sheets, including a base 1, a bracket 2 on the top of the base 1, and hydraulic cylinders 3 symmetrically arranged on the top of the bracket 2. The telescopic end of the hydraulic cylinder 3 is connected to a punch 4 inside the bracket 2. A mold 5 is embedded in the top of the base 1, and a positioning and fixing mechanism is provided inside the bracket 2. The punch 4 is driven by the hydraulic cylinder 3 to realize the stamping action. The positioning and fixing mechanism includes a drive rod 6, which is fixedly sleeved on the outside of the fixing frame 7 and is located behind the hydraulic cylinder 3. The fixing frame 7 is symmetrically arranged on the top of the base 1. A rotating shaft 8 is rotatably installed on one side of the fixing frame 7, passing through the fixing frame 7. A gear 9 is sleeved on one end of the rotating shaft 8 near the drive rod 6. Several tooth grooves that are adapted to and mesh with the gear 9 are symmetrically opened on the outside of the drive rod 6. The hydraulic cylinder 3 drives the drive rod 6 to move up and down. The vertical motion is converted into the rotational motion of the rotating shaft 8 by the meshing of the gear 9 with the tooth grooves. The positioning and fixing mechanism can be driven without an additional power source, reducing energy consumption.

[0029] In this example, the positioning and fixing mechanism also includes a turntable 10, which is fixedly sleeved on the outer side of the rotating shaft 8 away from the gear 9. The turntable 10 is located on the side of the fixing frame 7 away from the gear 9. A groove 26 is provided at one end of the turntable 10, and a screw 11 is rotatably installed in the groove 26. A threaded slider 12 is sleeved on the outer side of the screw 11. One end of the screw 11 extends to the outside of the turntable 10 and is connected to a handle. A connecting rod 14 is rotatably connected to one side of the slider 12. A push rod 15 is hinged to one end of the connecting rod 14. A support plate 17 is connected to one end of the push rod 15. A clamping plate 18 is provided on the side of the support plate 17 away from the push rod 15. The clamping plate 18 is symmetrically arranged near the guide rod 19. A guide rod 19 is provided, with one end of the guide rod 19 passing through the support plate 17 and connected to a stop block 20. A spring 21 is sleeved on the outside of the guide rod 19 between the support plate 17 and the stop block 20. A protective pad 22 is detachably installed on the side of the clamping plate 18 away from the support plate 17, and the protective pad 22 is connected to the clamping plate 18 through a connecting assembly. The combination of the turntable 10, screw 11 and slider 12 can be manually adjusted to the initial position of the clamping plate 18 to adapt to different specifications of plates. The spring 21 and the guide rod 19 form an elastic buffer structure to avoid rigid contact damage to the plates by the clamping plate 18, while improving clamping adaptability. The detachable protective pad 22 is easy to replace and maintain, and can be adapted to plates with different surface requirements.

[0030] In this example, a guide block 16 is fixedly connected to the bottom of the push rod 15 away from the support plate 17. The top of the base 1 is symmetrically provided with guide grooves that are adapted to the guide block 16. The guide block 16 is T-shaped. The T-shaped guide block 16 cooperates with the guide groove to provide precise horizontal guidance for the push rod 15, ensure the straightness of the movement of the clamping plate 18, improve positioning accuracy and reduce shaking.

[0031] In this example, a limiting frame 13 is fixedly installed on the top of the fixed frame 7. The limiting frame 13 is located outside the drive rod 6, and the upper end of the limiting frame 13 is fixedly connected to the bracket 2. The limiting frame 13 forms a vertical limiting constraint on the drive rod 6 to prevent it from deviating during movement and enhance the stability of the transmission mechanism.

[0032] In this example, the drive rod 6 has a U-shaped structure, while the fixed frame 7 and the limiting frame 13 both have L-shaped structures. The rotating shaft 8 is rotatably connected to the fixed frame 7 via bearings. The U-shaped drive rod 6, together with the L-shaped fixed frame 7 and the limiting frame 13, forms a stable support structure. The bearing connection reduces the rotational resistance of the rotating shaft 8, thereby improving the smoothness of transmission and the lifespan of the mechanism.

[0033] like Figure 1 , Figure 2 and Figure 4 As shown in the example, the connecting component includes a fixing block 23, which is fixedly connected to the protective pad 22. One end of the fixing block 23 passes through the clamping plate 18. The top of the clamping plate 18 is provided with a magnetic groove 27, and a rod 24 is provided in the magnetic groove 27. The lower end of the rod 24 passes through the fixing block 23.

[0034] In this example, the protective pad 22 is made of rubber, and the upper end of the insertion rod 24 is connected to a magnetic handle 25 that is compatible with the magnetic groove 27, and the magnetic handle 25 is attracted to the inner wall of the magnetic groove 27; the magnetic connection between the magnetic groove 27 and the magnetic handle 25 enables the quick installation and removal of the protective pad 22, allowing for the replacement of worn parts without tools, thus improving maintenance efficiency; the rubber protective pad 22 provides a flexible clamping surface to prevent scratches on the surface of the board.

[0035] In use, the position of the slider 12 in the groove 26 on the turntable 10 is adjusted by rotating the screw 11. The spacing of the clamping plates 18 is adjusted to be greater than the width of the plate by the connecting rod 14 and the push rod 15, so that it moves to a suitable position. Then the plate is placed on the mold 5 and pre-positioned by the guide block 16 cooperating with the guide groove. In the stamping stage, the hydraulic cylinder 3 drives the punch 4 to move downward, which drives the drive rod 6 to move downward synchronously. Its tooth groove meshes with the gear 9 to make the rotating shaft 8 and the turntable 10 rotate. The slider 12 moves outward and drives the push rod 15 through the connecting rod 14, so that the clamping plate 18 clamps the plate. The spring 21 is compressed to provide elastic clamping force. Then the punch 4 completes the stamping. In the reset and unloading stage, the hydraulic cylinder 3 drives the punch 4 to move downward, which drives the push rod 15 through the connecting rod 14, so that the clamping plate 18 clamps the plate. The spring 21 is compressed to provide elastic clamping force. Then the punch 4 completes the stamping. The pressure cylinder 3 drives the punch 4 and drive rod 6 to move upward, the gear 9 rotates in the opposite direction to reset the turntable 10, and the clamping plate 18 is released under the elastic force of the spring 21, so that the plate can be taken out, realizing the automatic positioning and clamping of the plate during the stamping process; the device can be linked with the force of the hydraulic cylinder 3 driving the punch 4 to move up and down, so that it drives the clamping plate 18 to move and clamp and fix the plate, so that it does not need to set up a separate power source, reducing energy consumption. At the same time, the position of the slider 12 can be adjusted according to the plate specifications to change the position of the clamping plate 18, so as to adapt to different plate clamping and fixing, thereby improving its applicability. Through the connecting components, the protective pad 22 can be easily and quickly disassembled and replaced.

[0036] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A positioning device for sheet metal parts to be punched, comprising a base (1), characterized in that: The base (1) is provided with a bracket (2) on top, and a hydraulic cylinder (3) is symmetrically provided on the top of the bracket (2). The telescopic end of the hydraulic cylinder (3) is connected to a punch (4) on the inner side of the bracket (2). A mold (5) is embedded in the top of the base (1), and a positioning and fixing mechanism is provided on the inner side of the bracket (2). The positioning and fixing mechanism includes a drive rod (6), which is fixedly sleeved on the outside of the fixing frame (7) and located behind the hydraulic cylinder (3). The base (1) is symmetrically provided with the fixing frame (7) on the top. A rotating shaft (8) that passes through the fixing frame (7) is rotatably installed on one side of the fixing frame (7). A gear (9) is sleeved on one end of the rotating shaft (8) near the drive rod (6). A number of tooth grooves that are adapted to and mesh with the gear (9) are symmetrically opened on the outside of the drive rod (6).

2. The positioning device for sheet metal punching according to claim 1, characterized in that: The positioning and fixing mechanism also includes a turntable (10), which is fixedly sleeved on the outer side of the rotating shaft (8) away from the gear (9), and the turntable (10) is located on the side of the fixing frame (7) away from the gear (9). A groove (26) is provided at one end of the turntable (10), and a screw (11) is rotatably installed in the groove (26). A threaded slider (12) is sleeved on the outer side of the screw (11). One end of the screw (11) extends to the outside of the turntable (10) and is connected to a handle. A connecting rod (14) is rotatably connected to one side of the slider (12), and one end of the connecting rod (14) is hinged to a... A push rod (15) is connected to a support plate (17) at one end. A clamping plate (18) is provided on the side of the support plate (17) away from the push rod (15). A guide rod (19) is symmetrically provided on the side of the clamping plate (18) near the guide rod (19). A stop block (20) is connected to the side of the guide rod (19) through the support plate (17). A spring (21) is sleeved on the outside of the guide rod (19) between the support plate (17) and the stop block (20). A protective pad (22) is detachably installed on the side of the clamping plate (18) away from the support plate (17). The protective pad (22) is connected to the clamping plate (18) through a connecting assembly.

3. The positioning device for sheet metal punching according to claim 2, characterized in that: The push rod (15) is fixedly connected to a guide block (16) at the bottom of the end away from the support plate (17). The base (1) has symmetrical guide grooves on the top that are adapted to the guide block (16). The guide block (16) is T-shaped.

4. The positioning device for sheet metal punching according to claim 3, characterized in that: A limiting frame (13) is fixedly installed on the top of the fixed frame (7). The limiting frame (13) is located outside the drive rod (6), and the upper end of the limiting frame (13) is fixedly connected to the bracket (2).

5. The positioning device for sheet metal punching according to claim 4, characterized in that: The drive rod (6) has a U-shaped structure, the fixed frame (7) and the limiting frame (13) are both L-shaped structures, and the rotating shaft (8) is rotatably connected to the fixed frame (7) through a bearing.

6. The positioning device for sheet metal punching according to claim 2, characterized in that: The connecting component includes a fixing block (23), which is fixedly connected to the protective pad (22). One end of the fixing block (23) passes through the clamping plate (18). The top of the clamping plate (18) is provided with a magnetic groove (27), and a rod (24) is provided in the magnetic groove (27). The lower end of the rod (24) passes through the fixing block (23).

7. The positioning device for sheet metal punching according to claim 6, characterized in that: The protective pad (22) is made of rubber. The upper end of the insertion rod (24) is connected to a magnetic handle (25) that is compatible with the magnetic groove (27), and the magnetic handle (25) is attracted to the inner wall of the magnetic groove (27).

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