Single-acting four-claw mechanical gripper

Abstract

The utility model relates to a single-action four-claw mechanical gripper, and aims to realize synchronous control of a plurality of grippers through a single air cylinder, so that a control system is simplified, and the gripping accuracy and stability are improved. The gripper comprises an air cylinder, a base and a clamping jaw. The telescopic end of the air cylinder penetrates through a round hole in the middle of the base to be connected with the clamping jaw, and opening and closing of the clamping jaw are achieved through stretching and retracting of the air cylinder. The clamping jaw part is composed of four clamping jaw supports, a supporting rod extends out of the inner side of each clamping jaw support to be connected with a jaw head, an elastic element is arranged between each supporting rod and the corresponding jaw head, and flexible control over the jaw heads is achieved through cooperation of a conical ejector block and a rolling wheel. The manipulator has the advantages that a plurality of grippers are controlled through a single power device, a control system is simplified, manufacturing cost and maintenance difficulty are reduced, grabbing accuracy and stability are improved, and the manipulator is quite suitable for material carrying and assembling procedures on an industrial automatic production line.

Description

Technical Field

[0001] This utility model relates to the field of mechanical clamping, and in particular to a single-action four-jaw mechanical gripper. Background Technology

[0002] With the continuous development of industrial automation technology, mechanical grippers, as an important component of automated production lines, are widely used in various material handling and assembly processes. Currently, most mechanical grippers on the market use multiple cylinders to control the opening and closing of each gripper to achieve the gripping and placement of items. While this design can meet production needs to a certain extent, it has also revealed some problems and shortcomings in practical applications.

[0003] Existing mechanical grippers typically require multiple cylinders to control each gripper individually. This necessitates a control system that precisely coordinates the movements of each cylinder to ensure the gripper can synchronously and accurately grasp objects. However, in some applications, due to environmental factors or the complexity of the control system, the coordinated control of multiple cylinders often fails to achieve the desired precision, potentially leading to unstable gripping, object damage, or reduced production efficiency.

[0004] Meanwhile, existing multi-cylinder mechanical grippers are relatively complex in structure, which not only increases manufacturing costs but also poses significant challenges to later maintenance and repair. The complex structure means more potential points of failure and higher maintenance costs, undoubtedly increasing the operational burden on businesses.

[0005] In conclusion, developing a mechanical gripper that can grasp objects using a single power unit while being simple in structure and easy to maintain is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] This invention proposes a single-action four-jaw mechanical gripper, which aims to control multiple grippers simultaneously with a single cylinder to grasp objects, thereby simplifying the control system, improving the accuracy and stability of grasping, and reducing manufacturing costs and maintenance difficulty.

[0007] To achieve the above objectives, the technical solution of this utility model is to design a single-action four-jaw mechanical gripper, including a cylinder, a base, and grippers. A circular hole is opened in the middle of the base, and the telescopic end of the cylinder passes through the circular hole in the middle of the base and is connected to the grippers. The grippers realize the relevant gripping actions through the telescopic movement of the cylinder.

[0008] Furthermore, the gripper includes gripper supports, of which there are four, each shaped like a quarter cylinder, fixed to the four corners of the base respectively. A gap is left between two adjacent gripper supports, and four gripper heads are respectively provided in the four gaps. A support rod extends horizontally from the inner side of the gripper support, and the support rod is perpendicular to the gripper head. An elastic element is provided between the support rod and the gripper head. A roller frame is provided at the rear end of the gripper head, and a roller is provided on the roller frame. A conical top block is provided in the middle of the gripper support, and the roller is attached to the conical top block.

[0009] Furthermore, the conical top block moves back and forth following the extension and retraction of the cylinder, the roller rolls on the conical top block, and the gripper head opens and closes with the cooperation of the elastic element.

[0010] Preferably, the elastic element is a spring.

[0011] Preferably, the front end of the gripper head is provided with transverse texture.

[0012] Preferably, the front end of the gripper head is made of rubber.

[0013] The advantages and beneficial effects of this invention are as follows: This design uses a single cylinder to control multiple grippers, greatly simplifying the control system and making it easier to achieve precise and synchronized gripping actions. It reduces the risk of unstable gripping or damage to items caused by improper multi-cylinder coordinated control. This not only reduces the complexity and cost of the control system but also improves its reliability and stability. Compared to multi-cylinder grippers, the gripper structure of this invention is simpler, thereby reducing manufacturing and assembly costs. Due to the simplified control system, this gripper can be more easily integrated into existing automated production lines, thereby improving production efficiency and reducing operating costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in 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.

[0015] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0016] Figure 2 This is a bottom view of the present invention.

[0017] Figure 3 This is a cross-sectional view of the present invention.

[0018] Among them, 1-cylinder, 2-base, 3-gripper, 31-gripper support, 32-support rod, 33-elastic element, 34-gripper head, 35-roller frame, 36-roller, 37-conical top block. Detailed Implementation

[0019] 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 skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model mainly consists of three parts: cylinder 1, base 2, and gripper 3, forming a compact and efficient gripping system.

[0021] The base 2 serves as the support structure for the entire gripper, with a circular hole in the center for the telescopic end of the cylinder 1 to pass through. The base 1 stably supports the cylinder 2 and the gripper 3 assembly, ensuring the stability and accuracy of the entire gripper during operation.

[0022] The telescopic end of cylinder 1 is connected to gripper 3 through the round hole in the middle of base 2, so that the telescopic action of cylinder 1 can be directly transmitted to gripper 3 to realize the gripping and release of items.

[0023] The gripper 3 includes four gripper supports 31, each a quarter-cylinder in shape, which are fixed to the four corners of the base 2 to provide stable support. There are gaps between adjacent gripper supports 31, and four gripper heads 34 are respectively provided in these gaps for direct contact and gripping of items.

[0024] Each gripper support 31 has a horizontally extending support rod 32 extending from its inner side. These support rods are perpendicular to the gripper head 34, enhancing the stability of the structure. An elastic element 33 is provided between the support rod 32 and the gripper head 34. In this embodiment, the elastic element is a spring. The elastic element 33 can exert an inward pulling force on the gripper head 34 to achieve the gripping of the item.

[0025] The rear end of the gripper head 34 is equipped with a roller frame 35 and a roller 36. The conical top block 37 set in the middle of the gripper support 31 is in close cooperation with the roller 36. The opening and closing of the gripper head 34 is realized by the roller 36 rolling up and down on the conical top block 37.

[0026] To increase gripping stability and friction, the front end of the gripper head 34 can be provided with transverse texture and made of a material with a high coefficient of friction, such as rubber.

[0027] Specific usage steps:

[0028] Driven by cylinder 1, the conical top block 37 begins to move back and forth. This movement is transmitted to the gripper head 34 through roller 36 and elastic element 33. When the conical top block 37 moves forward, it pushes roller 36, which in turn stretches elastic element 33 and causes gripper head 34 to open. Conversely, when the conical top block 37 moves backward, elastic element 33 pulls gripper head 34 back to its original position, pushing the gripped item back into place.

[0029] The present invention provides a detailed description of a single-action four-jaw mechanical gripper. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely illustrative and are intended to help understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A single-acting four-jaw mechanical gripper, comprising a cylinder (1), a base (2), and grippers (3), wherein a circular hole is formed in the middle of the base (2), and the telescopic end of the cylinder (1) passes through the circular hole in the middle of the base (2) and connects to the grippers (3), characterized in that, The gripper (3) includes a gripper support (31), there are four gripper supports (31), each is a quarter cylinder, and they are fixed at the four corners of the base (2). There is a gap between two adjacent gripper supports (31), and four gripper heads (34) are respectively provided in the four gaps. A support rod (32) extends horizontally from the inner side of the gripper support (31). The support rod (32) is perpendicular to the gripper head (34). An elastic element (33) is provided between the support rod (32) and the gripper head (34). A roller frame (35) is provided at the rear end of the gripper head (34). A roller (36) is provided on the roller frame (35). A conical top block (37) is provided in the middle of the gripper support (31). The roller (36) is attached to the conical top block (37).

2. The single-action four-jaw mechanical gripper according to claim 1, characterized in that, The elastic element (33) is a spring.

3. A single-action four-jaw mechanical gripper according to claim 2, characterized in that, The front end of the gripper head (34) is provided with a transverse texture.

4. A single-action four-jaw mechanical gripper according to claim 3, characterized in that, The front end of the gripper head (34) is made of rubber.

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