High-stability multi-jaw clamp

Abstract

The utility model discloses a kind of high-stability multi-claw clamps, it includes fixed base, positioning piston assembly and three jaw assemblies;The fixed base is equipped with cavity and multiple recesses, multiple The recesses are arranged below the cavity;The fixed base is further equipped with multiple movable grooves, reset hinged structure is equipped between the jaw assembly and the movable groove.The utility model is by setting piston driving element for the effect of driving the synchronous ejection or retraction of top block, cooperate reset hinged structure so that the jaw assembly is opened or closed clamping effect, simple structure, save linkage step, improve the efficiency of clamping action.By setting reset hinged structure with spring as reset structure, cooperate the mode that the recess is arranged below the cavity so that the jaw assembly is in closed state under the cooperation of reset hinged structure, prevent the damage of workpiece, guarantee the stability of clamping.

Description

Technical Field

[0001] This utility model relates to the technical field of clamps, specifically to a highly stable multi-jaw clamp. Background Technology

[0002] With the development of technology, fixtures are commonly used in manufacturing to automatically grip products, representing a new advancement in modern industrial automation equipment. Designing a fixture has become an important research direction. The aforementioned problem urgently needs to be solved in this field. To address this problem, application number CN202221537053.3 discloses a pneumatic three-jaw gripper, including a mounting part with three mounting posts extending from its bottom surface. Gripper mounting blocks are hinged between the three mounting posts. The mounting part has piston holes communicating with the mounting posts, and a piston rod extending to the mounting posts is slidably disposed within the piston holes. A mounting plate is located at the bottom of the piston rod. One end of the gripper mounting block is hinged to the mounting plate via a connector, and the connector is also hinged to the gripper mounting block. First, the three grippers are installed in mounting slots and fixed with bolts. Then, it is connected to a pneumatic source. When a product needs to be gripped, the piston rod is driven upwards, causing the three grippers to retract inwards, contacting different surfaces of the product to achieve gripping. When it is necessary to release the product, the drive piston rod moves downward, causing the three grippers to open outward, thereby releasing the product.

[0003] However, the pneumatic three-jaw chuck has the following problems: 1. The existing pneumatic three-jaw chuck requires multiple hinged connection structures to achieve synchronous movement of the three jaws, which is complex and involves many linkage steps, affecting the efficiency of the jaw's clamping and releasing action; 2. There is no reset structure. When the piston rod is not driven by a drive source, the jaws are in a relaxed state, which can easily cause the clamped workpiece to fall out of the pneumatic three-jaw chuck, resulting in damage to the workpiece and poor clamping stability. Utility Model Content

[0004] This utility model addresses the shortcomings of current technology by providing a highly stable multi-jaw clamp, aiming to solve the technical problems of complex clamp structure, slow clamping and releasing efficiency, and poor clamping stability in existing technologies.

[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0006] A highly stable multi-jaw clamp includes a fixed base, a positioning piston assembly, and three jaw assemblies. The fixed base has a cavity and multiple recesses, with the recesses arranged in an array at intervals on the outer wall of the fixed base and positioned below the cavity. The positioning piston assembly is disposed within the cavity. The fixed base also has multiple movable slots, with the jaw assemblies respectively disposed within each movable slot. A reset hinge structure is provided between each jaw assembly and each movable slot, allowing the jaw assembly to be in a clamping state without external force. The fixed base also has a connecting portion with a connecting channel that connects and communicates with the positioning piston assembly. The connecting portion has an external connection structure.

[0007] As a further improvement, the cavity is provided with a plurality of first channels, which are respectively connected to the movable groove; the positioning piston assembly is provided with a plurality of top blocks, which are respectively disposed in the first channels, and the top blocks can be pushed out or retracted along the first channels.

[0008] As a further improvement, each of the reset hinge structures includes a spring and a fixed shaft, with the springs respectively disposed in the concave cavity and the fixed shaft disposed in the movable groove.

[0009] As a further improvement, each of the gripper assemblies includes a clamping part and a connecting rod part. The clamping part is disposed at the end of the connecting rod part, and the connecting rod part is provided with a first through hole. The connecting rod part is connected to the fixed shaft through the first through hole to form a movable connection; the end of the connecting rod part is in contact with the spring.

[0010] As a further improvement, the end face of the fixed seat is provided with multiple guide grooves, which are respectively connected to the movable groove; an inclined rod is provided between the connecting rod and the clamping part, and the inclined rod is provided with guide blocks, which are respectively disposed in the guide grooves and can move along the direction of the guide grooves.

[0011] As a further improvement, each clamping part is provided with a rubber pad, which is disposed on the inner or outer wall of the clamping part; the rubber pad and the clamping part are detachably connected.

[0012] As a further improvement, all the pads are provided with anti-slip textures.

[0013] As a further improvement, the external structure includes an external thread and an internal thread, the internal thread being provided with a detachable air nozzle connector, the air nozzle connector being connected to the connection channel.

[0014] As a further improvement, the outer wall of the mounting base is provided with a first groove, which is used for the installation of the sensor.

[0015] As a further improvement, the fixing seat is provided with a second through hole, which is connected to the first channel; the second through hole is provided with a connector, and the connector and the second through hole are provided with a threaded connection structure; the connector can be one of a first air nozzle connector with a sealing ring or a screw with a sealing ring.

[0016] Compared with the prior art, the above-mentioned technical solutions of the highly stable multi-jaw clamp provided in this utility model embodiment have at least one of the following technical effects:

[0017] 1. This utility model uses a piston drive component to drive the top block to push out or retract synchronously. Combined with the reset hinge structure, it enables the gripper assembly to open or close for clamping. The structure is simple, saves linkage steps, and thus improves the clamping and releasing efficiency of the high-stability multi-jaw clamp.

[0018] 2. This utility model, by setting a reset hinge structure with a spring as the reset structure, is used for both reset and hinge functions. Furthermore, by placing the recessed cavity below the cavity, the gripper assembly is kept in a closed state under the cooperation of the reset hinge structure, ensuring clamping stability. Therefore, when the positioning piston assembly leaks or malfunctions, the workpiece held by the highly stable multi-jaw clamp will not fall off, preventing workpiece damage and improving fault protection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0020] Figure 1 This is a schematic diagram of the overall structure of the highly stable multi-jaw clamp in this embodiment;

[0021] Figure 2 This is an exploded view of the highly stable multi-jaw clamp in this embodiment;

[0022] Figure 3 This is a schematic diagram of the structure of the fixing base in this embodiment;

[0023] Figure 4 This is a schematic diagram of the mounting base from another perspective in this embodiment. Detailed Implementation

[0024] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0025] For examples, see the appendix. Figures 1-4 A highly stable multi-jaw clamp 1 includes a fixed base 2, a positioning piston assembly 3, and three jaw assemblies 4. The fixed base 2 has a cavity 5 and multiple recesses 6, which are arranged in an array at intervals on the outer wall of the fixed base 2 and below the cavity 5. The positioning piston assembly 3 is disposed within the cavity 5. The fixed base 2 also has multiple movable grooves 7, and the jaw assemblies 4 are respectively disposed within the movable grooves 7. Both the jaw assemblies 4 and the movable groove 7 assemblies have a reset hinge structure 8, which allows the jaw assemblies to... When there is no external force, the component 4 is in a clamping state; the fixed base 2 is also provided with a connecting part 20, the connecting part 20 is provided with a connecting channel 21, the connecting channel is connected and communicated with the positioning piston assembly 3; the connecting part 20 is provided with an external structure 9, by setting the cavity 6 below the cavity 5 so that the gripper assembly 4 is in a closed state with the cooperation of the reset hinge structure 8, so that when the positioning piston assembly 3 is leaking or malfunctioning, the workpiece held by the high-stability multi-jaw clamp 1 will not fall off, preventing damage to the workpiece and improving fault protection.

[0026] The cavity 5 is provided with a plurality of first channels 50, and the plurality of first channels 50 are respectively connected to the movable groove 7; the positioning piston assembly 3 is provided with a plurality of top blocks 30, and the positioning piston assembly 3 includes a piston drive member, which is used to drive the top blocks 30 to push out or retract synchronously. The top blocks 30 are respectively disposed in the first channels 50, and the top blocks 30 can push out or retract along the first channels 50. The positioning piston assembly 3 is used to drive the gripper assembly 4 to open or close for clamping.

[0027] Each reset hinge structure 8 includes a spring 80 and a fixed shaft 81. The spring 80 is respectively disposed in the cavity 6, thereby positioning the spring 80 below the positioning piston assembly 3. The fixed shaft 81 is disposed in the movable groove 7. Each gripper assembly 4 includes a clamping part 40 and a connecting rod part 41. The clamping part 40 is disposed at the end of the connecting rod part 41. The connecting rod part 41 has a first through hole, through which it is connected to the fixed shaft 81 to form a movable connection. The end of the connecting rod part 41 is in contact with the spring 80. The reset hinge structure is used to control the gripper assembly 4 to reset and close along the direction of the movable groove 7, thereby improving the stability of the gripping.

[0028] The end face of the fixed base 2 is provided with multiple guide grooves 22, which are respectively connected to the movable groove 7; a diagonal rod 42 is provided between the connecting rod part 41 and the clamping part 40, and the diagonal rod 42 is provided with guide blocks 420. The guide blocks 420 are respectively disposed in the guide grooves 22, and the guide blocks 420 can move along the direction of the guide grooves 22. The guide blocks 420 and the guide grooves 22 are used to ensure the stability of the action when the gripper assembly 4 moves closer or apart, and to ensure the clamping stability of the high-stability multi-jaw clamp 1.

[0029] Each clamping part 40 is provided with a rubber pad 400, which is disposed on the inner or outer wall of the clamping part 40; the rubber pad 400 is detachably connected to the clamping part 40. Each rubber pad 400 is provided with an anti-slip texture 400a. The rubber pad 400 serves a protective function, preventing scratches on the clamped workpiece. The anti-slip texture 400a provides anti-slip performance, thereby ensuring the clamping stability and efficiency of the highly stable multi-jaw chuck 1.

[0030] The external structure 9 includes an external thread 90 and an internal thread 91. The internal thread 91 is provided with a detachable air nozzle connector 92. The air nozzle connector 92 is connected to the connection channel 21. The external structure 9 is used to provide multiple external connection modes, thereby connecting different air compressor equipment external connectors and improving connection applicability.

[0031] The outer wall of the fixed base 2 is provided with a first groove 23, which is used for the installation of a sensor to detect the opening or closing action of the gripper assembly 4.

[0032] The fixed base 2 is provided with a second through hole 24, which is connected to the first channel 50. The second through hole 24 is provided with a connector 240, and a threaded connection structure is provided between the connector 240 and the second through hole 24. The connector 240 can be either a first air nozzle connector 92 with a sealing ring or a screw with a sealing ring. The second through hole 24 is used to lock the first air nozzle connector 92 or the screw with a sealing ring as needed. When it is necessary to connect the external air compressor to the high-stability multi-jaw clamp 1 at a right angle, the connector 240 is the first air nozzle connector 92, and then the external structure 9 is sealed to improve the application range of the high-stability multi-jaw clamp 1 and can also act as a pressure relief port to break the vacuum and improve the efficiency of the clamping action. When it is not necessary to make an air connection, the connector 240 is a screw with a sealing ring for sealing.

[0033] This invention utilizes a piston drive component to synchronously eject or retract the top block, which, in conjunction with the reset hinge structure, allows the gripper assembly to open or close. The structure is simple, saves on linkage steps, and thus improves the efficiency of the high-stability multi-jaw clamping action. Furthermore, the invention incorporates a reset hinge structure with a spring as a reset mechanism. This reset hinge structure serves both reset and hinge functions. By positioning the recess below the cavity, the gripper assembly remains closed under the reset hinge structure, ensuring clamping stability. Therefore, even if the positioning piston assembly leaks or malfunctions, the workpiece held by the high-stability multi-jaw clamp will not fall out, preventing workpiece damage and improving fault protection.

[0034] This utility model is not limited to the above-described embodiments. Other high-stability multi-jaw clamps obtained by using the same or similar structures or devices as the above-described embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. A highly stable multi-jaw clamp, characterized in that: The high-stability multi-jaw clamp includes a fixed base, a positioning piston assembly, and three jaw assemblies. The fixed base has a cavity and multiple recesses, with the recesses arranged in an array at intervals on the outer wall of the fixed base and positioned below the cavity. The positioning piston assembly is disposed within the cavity. The fixed base also has multiple movable slots, with the jaw assemblies respectively disposed within each movable slot. A reset hinge structure is provided between each jaw assembly and each movable slot, allowing the jaw assembly to be in a clamping state without external force. The fixed base also has a connecting portion with a connecting channel that connects and communicates with the positioning piston assembly. The connecting portion has an external connection structure.

2. The highly stable multi-jaw clamp according to claim 1, characterized in that: The cavity is provided with a plurality of first channels, which are respectively connected to the movable groove; the positioning piston assembly is provided with a plurality of top blocks, which are respectively disposed in the first channels, and the top blocks can be pushed out or retracted along the first channels.

3. The high-stability multi-jaw clamp according to claim 2, characterized in that: Each reset hinge structure includes a spring and a fixed shaft. The springs are respectively disposed in the concave cavity, and the fixed shaft is disposed in the movable groove.

4. The high-stability multi-jaw clamp according to claim 3, characterized in that: Each gripper assembly includes a clamping part and a connecting rod part. The clamping part is disposed at the end of the connecting rod part. The connecting rod part is provided with a first through hole. The connecting rod part is connected to the fixed shaft through the first through hole to form a movable connection. The end of the connecting rod part is in contact with the spring.

5. The highly stable multi-jaw clamp according to claim 4, characterized in that: The end face of the fixed base is provided with multiple guide grooves, which are respectively connected to the movable groove; an inclined rod is provided between the connecting rod and the clamping part, and the inclined rod is provided with guide blocks. The guide blocks are respectively disposed in the guide grooves, and the guide blocks can move along the direction of the guide grooves.

6. The highly stable multi-jaw clamp according to claim 5, characterized in that: Each clamping part is provided with a rubber pad, which is disposed on the inner or outer wall of the clamping part; the rubber pad and the clamping part are detachably connected.

7. The highly stable multi-jaw clamp according to claim 6, characterized in that: All the pads have anti-slip textures.

8. The high-stability multi-jaw clamp according to claim 7, characterized in that: The external structure includes an external thread and an internal thread. The internal thread is provided with a detachable air nozzle connector, which is connected to the connection channel.

9. The high-stability multi-jaw clamp according to claim 8, characterized in that: The outer wall of the mounting base is provided with a first groove, which is used for the installation of the sensor.

10. The high-stability multi-jaw clamp according to claim 9, characterized in that: The fixing base is provided with a second through hole, which is connected to the first channel; the second through hole is provided with a connector, and the connector and the second through hole are provided with a threaded connection structure; the connector can be either a first air nozzle connector with a sealing ring or a screw with a sealing ring.

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