Flexible clamp for sheet metal stamping and blanking

Abstract

The utility model relates to a metal plate stamping blanking flexible clamp which comprises a base, a connecting piece arranged on the base and used for being connected with a robot, a plurality of vacuum suction cups arranged below the base and magnetic pieces connected with the left side and the right side of the base through steering telescopic mechanisms respectively. A steering part of the steering telescopic mechanism is installed at one end of the magnetic piece. The self-adaptive buffer mechanism has the functions of axial buffering and spherical surface rotation, and can adaptively adsorb the surface according to the surface shape of a product, so that the self-adaptive buffer mechanism is compatible with products with different surfaces in a certain range.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a flexible clamp for sheet metal stamping and blanking. Background Art

[0002] At present, there are some problems in the stamping blanking process in the automotive sheet metal stamping plant. These problems include manual operation of blanking, the high speed of the stamping machine, high noise, heavy product weight, and sharp edges of the products after stamping, resulting in uneven stacking. Manual operation is not only prone to operator fatigue and low efficiency, but also comes with potential safety risks. The solution to this is to have multiple operators take turns wearing safety gear to perform stamping blanking work. However, this method is not the most effective solution because it still relies on manpower and may lead to unstable production efficiency.

[0003] In order to improve this process, consider introducing automated solutions, such as using robots and configuring special fixtures to automatically unload products. However, this method requires configuring special fixtures according to the characteristics of different products, and needs to establish a fixture library to meet the diverse product needs, which may require a certain investment cost, and maintaining the fixture library may also cause some inconvenience. But overall, this automated method can improve production efficiency, reduce the safety risks of manual operation, and improve product quality. Utility Model Content

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose a flexible clamp for sheet metal stamping blanking, which can have both axial buffering and spherical rotation, and can adaptively adsorb the surface according to the surface shape of the product, so as to be compatible with products with different surfaces within a certain range.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a flexible clamp for sheet metal stamping blanking, comprising a base, a connecting piece for connecting with a robot is arranged on the base, a plurality of vacuum suction cups are arranged under the base, and a magnetic piece is also included. The magnetic piece is connected to the left and right sides of the base respectively through a steering and telescopic mechanism, and the steering part of the steering and telescopic mechanism is installed at one end of the magnetic piece.

[0007] The preferred technical solution of the utility model is that the steering telescopic mechanism includes a spherical connector and a telescopic member, the spherical connector is arranged on the magnetic member, the rotating ball end of the spherical connector is fixedly connected to one end of the telescopic member, and the other end of the telescopic member is fixedly connected to the base.

[0008] The preferred technical solution of the utility model is that the telescopic member comprises a guide shaft, a guide shaft sleeve and a spring, the guide shaft and the guide shaft sleeve are sleeved together, and the outer sides of the guide shaft and the guide shaft sleeve are sleeved with the spring.

[0009] The preferred technical solution of the utility model is that the guide shaft is a stepped shaft, a soft compression spring is arranged above the stepped shaft, and a hard compression spring is arranged below the stepped shaft.

[0010] The preferred technical solution of the utility model is that the vacuum suction cup is an integrated two-layer or three-layer vacuum suction cup or a sponge vacuum suction cup.

[0011] The preferred technical solution of the utility model is that the magnetic piece is a permanent magnetic cylinder or an electromagnet.

[0012] An optimal technical solution of the utility model is that a pressure switch for detecting the internal air pressure of the vacuum suction cup is also arranged on the base.

[0013] Beneficial effects of the utility model:

[0014] The utility model proposes a flexible clamp for sheet metal stamping, which uses a vacuum suction cup and a magnetic part with a steering and telescopic mechanism to flexibly adsorb special-shaped sheet metal parts. It has a variety of adsorption combinations, can be compatible with different products within a certain range, and reduce the configuration of the clamp. In addition, the device is simple, uses automation to replace manual labor, improves efficiency, improves safety, and has a wide range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a three-dimensional diagram of the sheet metal stamping blanking flexible clamp of the first embodiment;

[0017] Figure 2 It is a front view of the sheet metal stamping blanking flexible clamp of the first embodiment;

[0018] Figure 3 It is a bottom view of the sheet metal stamping blanking flexible clamp of the first embodiment;

[0019] Figure 4 It is a front view of the telescopic member of the first embodiment.

[0020] In the figure:

[0021] 1-base; 2-connecting part; 3-vacuum suction cup; 4-magnetic part; 5-steering telescopic mechanism; 51-spherical connector; 52-telescopic part; 521-guide shaft; 522-guide shaft sleeve; 523-spring; 5231-soft compression spring; 5232-hard compression spring; 6-pressure switch; 7-solenoid valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Embodiment 1

[0025] like Figure 1-4As shown, the connection representation between the lines and pipelines is omitted in the accompanying drawings. A flexible clamp for sheet metal stamping blanking provided in this embodiment includes a base 1, a connector 2 for connecting to a robot is provided on the base 1, specifically a connecting flange, and a plurality of vacuum suction cups 3 are provided under the base 1. The vacuum suction cups 3 are arranged in an array, and the vacuum suction cups are arranged in three rows, with six arranged in each row. A magnetic piece 4 is also included, and the magnetic piece 4 is connected to the left and right sides of the base 1 through a steering telescopic mechanism 5, respectively, and the steering part of the steering telescopic mechanism 5 is installed at one end of the magnetic piece 4. Among them, the magnetic piece can be an electromagnet, a permanent magnetic cylinder, or other components that can provide the presence or absence of magnetic force. First, the scheme includes a base, on which a connector for connecting to a robot is provided. This base provides stable support for the entire system and is tightly connected to the robot to ensure precise motion control. Secondly, a plurality of vacuum suction cups are arranged under the base. These vacuum suction cups are used to achieve the adsorption of products, and the sheet metal parts can be firmly fixed by the negative pressure principle, thereby improving production efficiency and applicability. Further, the introduction of magnetic parts is one of the key innovations of this solution. These magnetic parts are connected to the left and right sides of the base through a steering telescopic mechanism, and the steering part of the steering telescopic mechanism is installed at one end of the magnetic parts. This design allows the magnetic parts to rotate freely in different directions and realizes the function of spherical rotation. Therefore, no matter what the surface shape of the product is, the magnetic parts can adapt and firmly adsorb, while realizing spherical rotation, ensuring flexibility and versatility. There are many varieties of stamped sheet metal, especially many special-shaped products. The vacuum suction cup can only be used for relatively flat sheet metal. The structure of increasing the magnetic parts is mainly used to be compatible with more products, and some sheet metals have more punched holes. If the vacuum suction cup is just on the hole, the vacuum is destroyed, resulting in the inability to adsorb. The magnetic parts can effectively avoid the defect of being unable to adsorb the sheet metal due to the hole. The fixture of this embodiment mainly highlights flexibility, and there are more combinations that can be used for sheet metal adsorption, such as: single-sided magnetic parts and vacuum suction cups, only magnetic parts, only vacuum suction cups, or three combinations. In general, this solution creatively realizes the functions of axial buffering and spherical rotation by combining the base, vacuum suction cup and magnetic parts, as well as the design of a clever steering and telescopic mechanism. At the same time, it can adaptively adsorb the surface according to the surface shape of the product, meeting the use requirements of products with different surfaces. This innovative design improves the flexibility and efficiency of the automated production line, reduces the cost of equipment replacement and maintenance, and thus improves the overall efficiency of the production process.

[0026] Preferably, the steering telescopic mechanism 5 includes a spherical connector 51 and a telescopic member 52, the spherical connector 51 is arranged on the magnetic member 4, the rotating ball end of the spherical connector 51 is fixedly connected to one end of the telescopic member 52, and the other end of the telescopic member 52 is fixedly connected to the base 1. By introducing the spherical connector, the rotating ball end on the magnetic member is connected to the telescopic member, and spherical rotation movement is achieved, which allows the magnetic member to rotate freely in multiple directions. This increases the freedom of movement of the system, allowing it to adapt to products of various shapes and sizes, thereby improving flexibility. By fixedly connecting the rotating ball end of the spherical connector to one end of the telescopic member, and fixing the other end of the telescopic member to the base, the firmness and stability of the connection part are ensured. This helps to avoid problems caused by unstable movement, such as vibration or looseness, thereby improving the stability of the system.

[0027] Specifically, the telescopic member 52 includes a guide shaft 521, a guide sleeve 522 and a spring 523, the guide shaft 521 and the guide sleeve 522 are sleeved together, and the outer sides of the guide shaft 521 and the guide sleeve 522 are sleeved with the spring 523. The spring is placed on the outer sides of the guide shaft and the guide sleeve, which plays a role in shock absorption and stability. The spring can absorb shock and vibration, thereby maintaining the stability of the system and reducing the impact on the product. This is very critical to ensure stable clamping of the product and reduce damage. Further, the guide shaft 521 is a stepped shaft, a soft compression spring 5231 is arranged above the stepped shaft, and a hard compression spring 5232 is arranged below the stepped shaft. The structure of the stepped shaft can provide more precise control. Different parts of the stepped shaft can provide different damping and elastic responses at different stages. This can enable the system to better cope with products of different shapes and sizes and achieve higher precision control. A soft compression spring is installed on the top for axial compression reset, and a hard compression spring is installed on the bottom, which is used for spherical rotation reset of the magnetic member in conjunction with a spherical connector.

[0028] Preferably, the vacuum suction cup 3 is an integrated two-layer or multi-layer vacuum suction cup. The design of the integrated two-layer or multi-layer vacuum suction cup enables it to adapt to products of different shapes and sizes. Different suction cups can work independently to adapt to the curves, bumps and irregular surfaces of the product, thereby improving the adaptability of the system. Integrated suction cups usually have better sealing and reduce the risk of air leakage. This helps to maintain continuous adsorption force, reduces the frequency of re-adsorption, and improves production efficiency. Further, the vacuum suction cup 3 is a sponge vacuum suction cup. Due to the softness of the sponge vacuum suction cup, it exerts less pressure on the surface of the product, thereby reducing the risk of damage or scratches to the product. This is very important for applications that need to protect the appearance and surface quality of the product. The sponge vacuum suction cup can reduce vibration and noise when adsorbing the product, thereby improving the working environment and reducing the operating noise level.

[0029] Preferably, the magnetic member 4 is a permanent magnetic cylinder controlled by a solenoid valve. Since permanent magnetic cylinders do not require an external power supply to maintain magnetic force, they generally have low energy consumption. This helps to reduce energy costs and improve the energy efficiency of the system. The permanent magnetic cylinder can meet the adsorption and positioning requirements of different products by the presence or absence of the strength of the magnetic field. This is very beneficial for applications that require high-precision operations.

[0030] Preferably, a pressure switch 6 for detecting the internal air pressure of the vacuum suction cup 3 is also provided on the base 1. The pressure switch is fixed to the vacuum suction cup base through a threaded connection and can monitor the internal air pressure of the vacuum suction cup. By continuously monitoring the stability of the adsorption force, the stability and safety of the product clamping are improved.

[0031] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A flexible clamp for sheet metal stamping, characterized in that: It comprises a base (1), a connecting piece (2) for connecting with a robot is arranged on the base (1), and a plurality of vacuum suction cups (3) are arranged under the base (1); It also includes a magnetic piece (4), which is connected to the left and right sides of the base (1) through a steering and telescopic mechanism (5), and the steering part of the steering and telescopic mechanism (5) is installed on one end of the magnetic piece (4).

2. The sheet metal stamping blanking flexible fixture according to claim 1 is characterized in that: The steering telescopic mechanism (5) comprises a spherical connector (51) and a telescopic member (52); The spherical connector (51) is arranged on the magnetic member (4); the rotating ball end of the spherical connector (51) is fixedly connected to one end of the telescopic member (52); and the other end of the telescopic member (52) is fixedly connected to the base (1).

3. The sheet metal stamping blanking flexible fixture according to claim 2 is characterized in that: The telescopic member (52) comprises a guide shaft (521), a guide shaft sleeve (522) and a spring (523); The guide shaft (521) and the guide shaft sleeve (522) are sleeved together, and the outer sides of the guide shaft (521) and the guide shaft sleeve (522) are sleeved with the spring (523).

4. The sheet metal stamping blanking flexible fixture according to claim 3 is characterized in that: The guide shaft (521) is a stepped shaft, a soft compression spring (5231) is arranged above the stepped shaft, and a hard compression spring (5232) is arranged below the stepped shaft.

5. The sheet metal stamping blanking flexible fixture according to claim 1, characterized in that: The vacuum suction cup (3) is an integrated two-layer or multi-layer vacuum suction cup or a sponge vacuum suction cup.

6. The sheet metal stamping blanking flexible fixture according to claim 1, characterized in that: The magnetic member (4) is a permanent magnetic cylinder or an electromagnet.

7. The sheet metal stamping blanking flexible fixture according to claim 1, characterized in that: The base (1) is also provided with a pressure switch (6) for detecting the internal air pressure of the vacuum suction cup (3).

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