Clamp and clamping mechanism

Abstract

The utility model relates to the technical field of workpiece clamping, and provides a clamp and a clamping mechanism, the clamp is used for clamping a workpiece, the clamp comprises at least one clamp unit, and each clamp unit comprises a mounting seat, a bearing part and a positioning part. And the mounting seat is used for being connected with a driving arm for driving the clamp unit. The bearing part is arranged on the mounting base and used for bearing the workpiece. And the positioning part is arranged on the mounting seat, the positioning part is arranged above the bearing part, the positioning part comprises a profiling part, and the profiling part is used for positioning and attaching the surface of the workpiece. The positioning part in the clamp unit comprises the profiling part, and the profiling part can be tightly attached to the surface of the workpiece, so that the workpiece can be positioned more accurately in the clamping process.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece clamping technical field, especially a kind of clamp and clamping mechanism. BACKGROUND

[0002] At present, in the production process of deep drawing part, the commonly used mechanical hand clamping mode mainly has two kinds: suction cup clamping and pneumatic clamp clamping. Although the two clamping modes solve the product grabbing problem in automatic production to some extent, there are still many limitations, and cannot meet the production demand of high precision and high efficiency.

[0003] The existing suction cup clamping and pneumatic clamp clamping technology still has many defects in the production of deep drawing part, and cannot effectively solve the problems of unstable product clamping, inaccurate position, insufficient clamping force and the like, which seriously affects the precision control and product quality in the automatic production process. UTILITY MODEL CONTENT

[0004] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a clamp and clamping mechanism to improve the clamping precision of workpiece.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a clamp, which is used for clamping workpiece, and comprises at least one clamp unit, and the clamp unit comprises:

[0006] A mounting seat is used for connecting a driving arm for driving the clamp unit;

[0007] A supporting part is arranged on the mounting seat for supporting the workpiece;

[0008] A positioning part is arranged on the mounting seat, and the positioning part is arranged above the supporting part, and the positioning part comprises a profiling part for positioning the surface of the workpiece.

[0009] In an optional embodiment of the utility model, the clamp unit is oppositely arranged with two.

[0010] In an optional embodiment of the utility model, a guide rod is arranged on the mounting seat in horizontal direction, the positioning part is sleeved on the guide rod to be able to approach or move away from the mounting seat along the guide rod, a compression spring is sleeved on the guide rod between the positioning part and the mounting seat, and the two ends of the compression spring are connected with the mounting seat and the positioning part respectively.

[0011] In an optional embodiment of the utility model, the positioning part and the supporting part are arranged in up-down direction to form a space for accommodating the flange of the workpiece.

[0012] In an optional embodiment of the utility model, the profiling part is assembled as: when the profiling part on the positioning part moves to the mounting base, the upper surface of the supporting part is exposed.

[0013] In an optional embodiment of the utility model, at least one of the clamp units is provided with a sensor, and the sensor is used for detecting whether a workpiece is clamped.

[0014] In an optional embodiment of the utility model, the sensor is a visual sensor or a gravity sensor.

[0015] In an optional embodiment of the utility model, the supporting part is a supporting plate structure.

[0016] In an optional embodiment of the utility model, the mounting base comprises a mounting plate and a fixing block, the mounting plate is used for connecting a driving arm that drives the clamp unit, and the fixing block is used for connecting the supporting part and the positioning part.

[0017] The utility model also proposes a kind of clamping mechanism, including driving arm, the driving arm is installed with the clamp of the described.

[0018] The technical effect of the utility model is that: the positioning part in the clamp unit of the utility model includes profiling part, the profiling part can be closely attached to the surface of workpiece, to ensure that workpiece can be positioned more accurately in clamping process. Effectively solve the problems of unstable clamping, inaccurate positioning, insufficient clamping force and other problems in prior art, suitable for mechanical hand grabbing of deep-drawing stamping part, can significantly improve the positioning accuracy and clamping stability of workpiece. By reducing the influence of punch vibration on workpiece, the clamp can greatly improve production stability, reduce mold damage and the generation of defective products, and ultimately achieve the goal of improving production efficiency and reducing cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used for the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0020] Figure 1 It is the mounting position schematic view of the clamp in an embodiment of the utility model;

[0021] Figure 2 It is the working schematic view of the clamp in an embodiment of the utility model;

[0022] Figure 3 It is the structural schematic view of one clamp unit of the clamp in an embodiment of the utility model;

[0023] Figure 4 Figure 1 is a side view of a clamp unit of the clamp in an embodiment of the present application.

[0024] The reference signs are explained as follows: 1, driving arm; 2, workpiece; 10, mounting seat; 11, mounting plate; 12, fixed block; 20, supporting part; 30, positioning part; 31, profiling part; 32, buffer pad; 40, guide rod; 50, sensor. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied in different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only show the components related to the present application in the diagrams, not the number, shape and size of the components during actual implementation. The shape, number and proportion of each component during implementation can be changed arbitrarily, and the layout pattern of the components can be more complex.

[0027] At present, there are mainly two kinds of mechanical hand clamping methods commonly used in the production process of deep drawing parts: suction cup clamping and pneumatic clamp clamping. Although these two clamping methods solve the product grabbing problem in automatic production to some extent, they still have many limitations and cannot meet the production demand of high precision and high efficiency.

[0028] Firstly, the suction cup clamping method is widely used in the grabbing of lightweight products. The suction cup absorbs the product on its surface through the negative pressure principle and carries it. However, when using the suction cup to grab the product, there are the following problems: first, when the surface of the product is coated with grease or other smooth substances, the suction effect of the suction cup will be greatly reduced, resulting in ineffective clamping of the product; second, for products with uneven surfaces or irregular shapes, the suction cup cannot form stable suction force, causing the product to easily slide or fall off, especially when carrying frequently, the sensor frequently alarms, affecting the normal operation of the production line.

[0029] Secondly, the pneumatic clamp clamping mode is mainly suitable for heavy or complex-shaped products. The pneumatic clamp clamps the product through clamping force, which can provide relatively stable clamping effect, but the clamping force is limited by air pressure and clamp design, especially when clamping heavy products, the clamping force is often insufficient to effectively carry heavy objects. On the other hand, during clamping, due to the design of the clamp and the precision of the pneumatic system, the product often vibrates or moves, resulting in inaccurate clamping position. In addition, the clamping range and force of the clamp are limited, which cannot adapt to various product shapes and sizes, resulting in inaccurate product placement, which may cause mold damage when placed in the next mold, ultimately producing defective products, affecting production efficiency and product quality.

[0030] As shown in Figures 1-4 The utility model provides a clamp, the clamp is used for clamping work piece 2, the clamp includes at least one clamp unit, the clamp unit includes mounting seat 10, support part 20 and positioning part 30.

[0031] The mounting seat 10 is used for connecting the driving arm 1 that drives the clamp unit. The mounting seat 10 is the basic support part of the clamp, which is used for connecting with the driving arm 1, and the driving arm 1 makes the clamp unit can move, clamp or release work piece 2 by providing power. The design of mounting seat 10 ensures that the clamp can be used with a robot or other automated equipment, so as to realize the automatic grabbing and positioning of work piece 2. The mounting seat 10 provides stable structural support, so that the whole clamp system is more stable when working, and ensures that the clamp can move accurately under the action of the driving arm 1.

[0032] The support part 20 is arranged on the mounting seat 10 for supporting the work piece 2. The support part 20 provides a stable support surface for the work piece 2, preventing the work piece 2 from tilting, sliding or falling during clamping. The presence of the support part 20 allows the work piece 2 to evenly withstand the pressure from the clamp when clamped, ensuring that the work piece 2 remains stable during movement and positioning, thereby preventing damage or inaccurate positioning of the work piece 2 due to instability.

[0033] The positioning part 30 is provided on the mounting base 10, and the positioning part 30 is provided above the supporting part 20. The positioning part 30 includes a profiling part 31 for positioning the surface of the workpiece 2. The shape of the profiling part 31 can match the shape of the side surface of the workpiece 2. The profiling part 31 can achieve high-precision positioning of the workpiece 2 during clamping by precisely matching the shape of the side surface of the workpiece 2. In particular, for workpieces 2 with complex shapes and irregular surfaces, the profiling part 31 can conform to the surface profile, ensuring more stable contact between the clamp and the workpiece 2. By matching the shape of the profiling part 31 with the side surface of the workpiece 2, the clamp can effectively avoid clamping deviation caused by unstable workpieces 2. Even if the surface of the workpiece 2 is complex or irregular, the design of the profiling part 31 ensures that the clamp can adapt to various workpiece 2 shapes, improving the accuracy and stability during clamping and reducing the risk of workpiece 2 displacement.

[0034] The positioning part 30 also includes a buffer pad 32, and the profiling part 31 is provided on the buffer pad 32. The buffer pad 32 is provided in the positioning part 30 and works together with the profiling part 31. Its main function is to absorb external impact or vibration, thereby reducing the direct pressure of the clamp on the workpiece 2. The buffer pad 32 helps to avoid damage to the surface of the workpiece 2 during clamping, and also plays a role in shock absorption during clamp movement.

[0035] As shown in Figure 1 , 2 , the clamp unit is provided in pairs. Different parts of the workpiece 2 can be clamped simultaneously by symmetrical or balanced means, thereby improving the stability and clamping force of the clamp. The symmetrical design of the two clamp units can ensure that the force exerted by the clamp on the workpiece 2 during clamping is uniform, avoiding displacement or deformation of the workpiece 2 caused by uneven clamping. When the workpiece 2 is large or complex in shape, the two clamp units can clamp different parts of the workpiece 2, providing more comprehensive support and clamping, making the workpiece 2 more stable in the clamp, and reducing displacement or tilting of the workpiece 2 during operation due to uneven force.

[0036] As shown in Figure 2 , 3 , 4, the mounting base 10 is provided with a guide rod 40 arranged in the horizontal direction. The guide rod 40 is arranged in the horizontal direction, providing a precise track or guide path for the positioning part 30 to move smoothly along the guide rod 40. This design allows the positioning part 30 to adjust the distance from the workpiece 2 in the clamp system, thereby meeting the clamping needs of different workpieces 2.

[0037] The positioning part 30 is sleeved on the guide rod 40 and can move towards or away from the mounting seat 10 along the guide rod 40, and a compression spring is sleeved on the guide rod 40 between the positioning part 30 and the mounting seat 10, and the two ends of the compression spring are connected with the mounting seat 10 and the positioning part 30 respectively. The compression spring provides elastic force, ensures that the positioning part 30 can return to the original position when there is no external force, and also ensures smooth movement during adjustment. The compression spring can effectively buffer the pressure received by the workpiece 2, and avoid deformation or damage of the workpiece 2 caused by unstable clamps or excessive pressure.

[0038] As shown in Figure 4 The positioning part 30 and the supporting part 20 are arranged in an up-down direction to form a space for accommodating the flange of the workpiece 2. This design is mainly to meet the needs of those workpieces 2 that need to clamp the flange (i.e. the edge part of the workpiece 2). Through up-down arrangement, the clamp can provide appropriate space for the flange of the workpiece 2, avoid pressing the edge part of the workpiece 2 during clamping, and thus ensure that the workpiece 2 is not deformed. Through this interval design, the clamp can accommodate the flange part of the workpiece 2, so that the clamp does not interfere with the entire shape of the workpiece 2 during clamping, especially for workpieces 2 with flange features (such as metal plates, plastic parts, etc.), this design can avoid deformation or unstable clamping of the workpiece 2 caused by space limitation of the clamp.

[0039] In an optional embodiment of the utility model, the profiling part 31 is assembled as: when the profiling part 31 on the positioning part 30 moves towards the mounting seat 10, the upper surface of the supporting part 20 is exposed. The movement of the profiling part 31 exposes the upper surface of the supporting part 20, thereby providing necessary support for the workpiece 2, especially when the flange part of the workpiece 2 needs additional support, the action of the profiling part 31 can effectively trigger the exposure of the support part, ensuring that the workpiece 2 is stably placed in the clamp. Through this design, the clamp can provide appropriate support and protection during clamping to prevent the workpiece 2 from deforming due to lack of support.

[0040] As shown in Figure 2 At least one of the clamps is provided with a sensor 50 for detecting whether the workpiece 2 is clamped. The sensor 50 is connected to the male-female joint at the tail end of the driving arm 1, which can reduce wiring time and improve assembly efficiency. This design facilitates quick connection and disconnection of the sensor 50, improves the flexibility of the work process and production efficiency, especially in scenarios where the sensor 50 needs to be frequently replaced or maintained, a lot of time can be saved. Through the signal line, the sensor 50 can be connected to the control circuit of the punch, realizing real-time monitoring and alarm. When the clamp does not correctly clamp the workpiece 2, the sensor 50 sends a signal to the control system, triggering a false delivery stop alarm.

[0041] Through real-time monitoring by the sensor 50, the system can immediately issue an alarm signal when the clamp is not clamped to the workpiece 2 correctly, avoiding the workpiece 2 being sent to the next process incorrectly. If the workpiece 2 is not clamped, the punch press will be stopped in time, preventing unnecessary loss of equipment due to idling or causing misprocessing of the workpiece 2.

[0042] In an optional embodiment of the present application, the sensor 50 is a visual sensor or a gravity sensor. The visual sensor can detect whether the workpiece 2 has been clamped accurately by the clamp through image recognition technology. It usually uses a camera or other visual equipment to take pictures of the position of the workpiece 2, judges whether the workpiece 2 is in the clamp, and compares the standard clamping position and the shape of the workpiece 2. If the clamp is not successfully clamped or the position of the workpiece 2 is abnormal, the visual sensor will send an alarm signal to the control system. The gravity sensor detects whether the workpiece 2 is clamped by the clamp by using gravity changes. It judges whether the workpiece 2 is successfully clamped by the clamp by sensing the weight change or position change of the workpiece 2 during clamping. The gravity sensor is suitable for cases where the workpiece 2 is relatively uniform in size, heavy or fixed.

[0043] As shown in Figure 4 , the supporting part 20 is a supporting plate structure. This means that the supporting plate serves as a support platform to support or support the workpiece 2. In actual operation, the supporting plate usually provides stable support for the workpiece 2, ensuring that the workpiece 2 is stably placed during processing, avoiding processing errors or clamp displacement due to instability. The supporting plate structure has good adaptability compared to other complex support methods, and can accommodate workpieces 2 of different shapes or sizes. Through the design of the supporting plate, the supporting part 20 can be adjusted or replaced according to actual needs to meet diversified process requirements.

[0044] As shown in Figure 1 , 2 , the mounting seat 10 includes a mounting plate 11 and a fixed block 12. The main function of the mounting plate 11 is to connect and drive the drive arm 1 of the clamp unit. The drive arm 1 is a component used to control the movement or adjustment of the clamp unit in space. The mounting plate 11 connects the clamp unit with the drive system, transmitting driving force so that the clamp can accurately and stably perform tasks. The fixed block 12 is used to connect the supporting part 20 and the positioning part 30. During the working process of the clamp unit, the fixed block 12 ensures that the supporting part 20 and the positioning part 30 are stably fixed, preventing them from loosening or shifting during work, and ensuring the correct placement and positioning of the workpiece 2. The fixed block 12 is usually a crucial part of the mounting seat 10, bearing the heavy responsibility of fixing and supporting.

[0045] As shown in Figure 1 , the present application also proposes a clamping mechanism, which comprises a drive arm 1, and the clamp is installed on the drive arm 1.

[0046] In summary, the positioning part 30 in the clamp unit of the utility model includes a profiling part 31, which can closely fit the surface of the workpiece 2 and ensure that the workpiece 2 can be positioned more accurately during clamping. The clamp can significantly improve the positioning accuracy of the workpiece 2, especially during the mechanical hand grabbing process of the deep-drawing stamped workpiece 2, through the accurate fitting of the profiling part 31, the problem of workpiece 2 position deviation can be effectively solved. Whether it is a light workpiece 2 or a heavy workpiece 2, the clamp can provide sufficient clamping force to prevent vibration or insufficient clamping force during clamping, improve the stability of clamping. The profiling clamping block can effectively guide the workpiece 2 when the punch is vibrating, reduce the displacement of the workpiece 2 caused by vibration, ensure that the workpiece 2 is accurately placed in the die, avoid die damage, and reduce the generation of defective products. By improving the clamping accuracy and reducing the influence of workpiece 2 displacement on the stamping process, the clamp can significantly improve the efficiency of the production line, reduce the product unqualified rate and die repairing time, thereby reducing the production cost and enhancing the market competitiveness.

[0047] The above-mentioned embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

[0048] In the description herein, many specific details are provided, such as examples of components or methods, to provide a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that the utility model embodiments can be practiced without one or more of the specific details, or with other devices, systems, assemblies, methods, components, materials, parts, and the like. In other instances, well-known structures, materials, or operations are not shown or described in detail.

[0049] Reference throughout this specification to "an embodiment", "embodiment", or "specific embodiment", means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the utility model, and is not necessarily included in all embodiments. Thus, the appearances of the phrase "in one embodiment", "in an embodiment", or "in specific embodiments" in various places in this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the utility model can be combined in any suitable manner with one or more other embodiments. It is understood that other variations and modifications of the utility model embodiments described and illustrated herein can be made based on the teachings herein, and are therefore within the scope of the utility model.

[0050] It should also be understood that one or more of the elements illustrated in the drawings / figures can also be implemented in a more separated or integrated manner, or even removed and provided as a stand-alone element based on the specific application, or subcombination of elements, as is within the scope of the disclosure.

[0051] In addition, unless explicitly stated otherwise, any drawings herein are schematic and are not to scale. In addition, as used in the description herein and throughout the claims that follow, the meaning of "or" includes "and / or" unless explicitly stated otherwise. Furthermore, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless explicitly stated otherwise.

[0052] As used in the description herein and throughout the claims that follow, the meaning of "a," "an," and "the" include plural references unless explicitly stated otherwise. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless explicitly stated otherwise.

[0053] The above description of the illustrated embodiments of the application (including what is described in the abstract) is not intended to be exhaustive or to limit the application to the precise forms disclosed. While specific embodiments of, and examples for, the application are described herein for illustrative purposes, various equivalent modifications are possible within the spirit and scope of the application, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications can be made to the above described embodiments and yet the application will remain within the scope of the application. Accordingly, while the application is susceptible to various modifications and alternative forms, specific embodiments and examples thereof have been shown and described in detail herein. However, it should be understood that the application is not to be limited to particular examples or methods disclosed, and that many modifications, equivalents and alternatives exist which fall within the scope of the application.

[0054] The systems and methods have been described generally herein in terms of details to aid in the understanding of the present application. In addition, various specific details have been presented for the purpose of providing a thorough understanding of embodiments of the present application. However, it will be appreciated by those skilled in the relevant art that the application can be practiced without one or more of the specific details or with other devices, systems, apparatus, methods, components, materials, parts, and / or the like. In other instances, well known structures, materials, or operations have not been shown or described in detail to avoid obscuring aspects of embodiments of the application.

[0055] Thus, although the present application has been described herein with reference to particular embodiments thereof, modifications, alterations and substitutions will be apparent to those skilled in the art and are intended to be within the scope of the application. Accordingly, it is to be understood that the application can be used in a variety of applications and environments and can take many different forms of implementation. The application is not limited to the specific embodiments described herein, but rather, the specific embodiments are included by way of example only. Therefore, the particular embodiments described herein are not intended to limit the scope of the application but rather are merely intended to provide a particular disclosure of an implementation of the present application. Accordingly, the scope of the application is to be limited only by the appended claims.

Claims

1. A clamp characterized in that, The clamp is used for clamping a workpiece, and comprises at least one clamp unit, which comprises: a mounting base for connecting a driving arm for driving the clamp unit; a supporting part provided on the mounting base for supporting the workpiece; a positioning part provided on the mounting base, which is arranged above the supporting part and comprises a profiling part for positioning a surface of the workpiece.

2. A clamp according to claim 1, wherein The clamp units are oppositely arranged.

3. The fixture of claim 1, wherein The mounting base is provided with a guide rod arranged in a horizontal direction, the positioning part is sleeved on the guide rod to be able to move towards or away from the mounting base along the guide rod, a compression spring is sleeved on the guide rod between the positioning part and the mounting base, and two ends of the compression spring are connected with the mounting base and the positioning part, respectively.

4. A clamp according to claim 3, wherein The positioning part and the supporting part are arranged in a spaced manner in a vertical direction to form a space for accommodating a flange of the workpiece.

5. The fixture of claim 3 wherein, The profiling part is assembled in such a way that when the profiling part on the positioning part moves towards the mounting base, an upper surface of the supporting part is exposed.

6. The fixture of claim 1, wherein At least one of the clamp units is provided with a sensor for detecting whether a workpiece is clamped.

7. A clamp according to claim 6, wherein The sensor is a visual sensor or a gravity sensor.

8. The fixture of claim 1 wherein, The supporting part is in the form of a supporting plate.

9. The fixture of claim 1 wherein, The mounting base comprises a mounting plate for connecting the driving arm for driving the clamp unit and a fixing block for connecting the supporting part and the positioning part.

10. A clamping mechanism, characterized by The driving arm is provided with the clamp as claimed in any one of claims 1-9.

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