A clamping device for a workpiece

Abstract

The utility model relates to automatic clamping equipment technical field provides a kind of clamping device for workpiece, workpiece has first department, and second department along vertical direction extends, clamping device includes: support frame, suction accessory, positioning member and clamping piece.Suction accessory is located on support frame, for adsorbing workpiece;Positioning member lifting connection is in support frame one side, with first and second working position;Clamping piece is hinged in support frame other side, and is clamped with suction accessory second department together.When positioning member is in first working position, its bottom protrudes in suction accessory lower end surface, and the both cooperate to form positioning structure, and the upper end surface and both side edges of workpiece first department abut, synchronous realization accurate positioning in clamping process, achieve the integration of clamping and positioning, ensure handling accuracy, save subsequent adjustment process, improve efficiency, reduce cost;When positioning member switches to second working position, it is released from workpiece, and releases positioning.

Description

Technical Field

[0001] This utility model belongs to the field of automated clamping equipment technology, specifically relating to a clamping device for workpieces. Background Technology

[0002] In automated production, assembly, or inspection processes, precise workpiece clamping and positioning are crucial for ensuring machining accuracy and operational efficiency. Common clamping devices typically include a support structure and a clamping mechanism, used to grasp and hold workpieces for handling, assembly, or processing operations. Currently, widely used clamping devices employ mechanical grippers, suction cups, or magnetic adsorption to clamp or adhere workpieces.

[0003] However, existing clamping devices generally suffer from a significant drawback: they only possess clamping functionality and lack the ability to position workpieces in real time and with precision. Because position correction cannot be completed synchronously during clamping, an additional positioning process is often required to adjust the workpiece's posture or coordinates after it has been clamped and transported to the target position.

[0004] This design, which separates the clamping and positioning functions, not only increases the complexity of the process and reduces the overall operating efficiency, but also increases the equipment investment and maintenance costs. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, the technical problem this invention aims to solve is: to propose a workpiece clamping device. This device comprises an adsorption component, a positioning component, and a clamping component mounted on a support frame. When the positioning component is in its first working position, its bottom protrudes beyond the lower end face of the adsorption component. The protruding bottom portion of the positioning component and the lower end face of the adsorption component work together to form a positioning structure. During clamping, the first part of the workpiece enters the positioning structure from bottom to top, with its upper surface and side edges abutting against the positioning structure. This allows for simultaneous and precise workpiece positioning during clamping, achieving integrated clamping and positioning. This not only ensures the positional accuracy of the workpiece during transport but also eliminates the need for additional positioning adjustments after reaching the target position, significantly improving operational efficiency and reducing production costs.

[0006] The technical solution adopted by this utility model to solve its technical problem is to propose a clamping device for a workpiece, wherein the workpiece has a first part and a second part extending in a vertical direction, and the clamping device includes:

[0007] Support frame;

[0008] An adsorption element, which is mounted on the support frame, is used to pick up the workpiece;

[0009] A positioning element, which is vertically connected to the support frame and located on one side of the adsorption element, has a first working position and a second working position.

[0010] A clamping member, which is hinged to the support frame and located on the other side of the adsorption member, is respectively pressed against the two sides of the second part to clamp the workpiece;

[0011] When the positioning element is in the first working position, the bottom of the positioning element protrudes from the lower end face of the adsorption element and together with the lower end face of the adsorption element to form a positioning structure. The positioning structure abuts against the upper surface and the two side edges of the first part for positioning the workpiece.

[0012] When the positioning element is in the second working position, it is used to release the positioning of the workpiece.

[0013] In the above-mentioned clamping device for workpieces, the positioning member is provided with a hollow portion that extends vertically through it, and one side of the hollow portion has an opening. The hollow portion is movably fitted onto the outer periphery of one side of the adsorption member through the opening. When the positioning member is in the first working position, the positioning structure is formed between the inner walls of both sides of the hollow portion and the lower end face of the adsorption member.

[0014] In the above-mentioned clamping device for a workpiece, the positioning member has a vertical part and a bent part. The vertical part is connected to the support frame, and the bent part extends horizontally from the end of the vertical part toward the adsorption member. The hollow part is provided in the bent part.

[0015] In the above-mentioned clamping device for workpieces, the support frame is provided with a guide groove, and the vertical part slides through the guide groove to provide guidance for the lifting and lowering of the positioning member.

[0016] In the above-mentioned clamping device for workpieces, the adsorption element is connected to a connector for connecting the adsorption element to an air source.

[0017] In the above-mentioned clamping device for workpieces, an airflow channel is provided inside the adsorption member, one end of which is connected to the connector, and the other end extends to the adsorption area at the bottom of the adsorption member.

[0018] In the above-mentioned clamping device for workpieces, the clamping member has a connecting part and a clamping part. The connecting part is hinged to the support frame by a shaft pin. One end of the clamping part is provided with a clamping end that bends toward the adsorption member. The clamping end and the adsorption member are respectively pressed against the two sides of the second part.

[0019] In the above-mentioned workpiece clamping device, a first driving member is provided on the support frame. The output end of the first driving member is connected to the upper end of the vertical part, and is used to drive the positioning member to switch between the first working position and the second working position.

[0020] In the above-mentioned workpiece clamping device, a second driving member is further provided on the support frame. The output end of the second driving member is connected to the connecting part to drive the clamping member to rotate.

[0021] The above-mentioned clamping device for workpieces further includes a third driving member, the support frame being connected to the third driving member, and the third driving member being used to drive the support frame to rise and fall.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) By setting an adsorption component, a positioning component, and a clamping component on the support frame, when the positioning component is in the first working position, its bottom protrudes from the lower end face of the adsorption component. The protruding part of the bottom of the positioning component and the lower end face of the adsorption component work together to form a positioning structure. During the clamping process, the first part of the workpiece enters the positioning structure from bottom to top, and the upper surface and side edges of the first part abut against the positioning structure. Thus, the precise positioning of the workpiece is completed simultaneously during the clamping process, realizing the integration of clamping and positioning. This not only ensures the positional accuracy of the workpiece during the handling process, but also eliminates the need for additional positioning adjustments after reaching the target position, significantly improving work efficiency and reducing production costs.

[0024] (2) Through the coordinated positioning of the positioning component and the adsorption component, the adsorption component applies negative pressure to the first part of the workpiece, while the clamping component clamps the second part from the side, forming a composite fixing mode of positioning, adsorption, and side clamping. This structure significantly improves clamping stability and anti-interference ability.

[0025] (3) The third drive component drives the support frame to rise and fall as a whole. The first and second drive components are mounted on the support frame and move with it, and independently control the rising and falling of the positioning component and the opening and closing of the clamping component. All actions are automatically coordinated according to a preset sequence and do not interfere with each other. This design avoids the complexity and failure rate of traditional mechanical linkage mechanisms and improves the system response speed and flexibility. Attached Figure Description

[0026] Figure 1 This is a 3D view of the workpiece in this solution.

[0027] Figure 2 This is a 3D view of the proposed solution.

[0028] Figure 3 yes Figure 2 A 3D view of the hidden part of the structure.

[0029] Figure 4 This is a 3D view of the positioning component in this solution.

[0030] Figure 5 This is a three-dimensional view of the clamping component in this design.

[0031] In the figure, 1 is the workpiece; 2 is the first part; 3 is the second part; 4 is the support frame; 5 is the adsorption component; 6 is the positioning component; 7 is the clamping component; 8 is the hollow part; 9 is the vertical part; 10 is the bent part; 11 is the guide groove; 12 is the joint; 13 is the connecting part; 14 is the clamping part; 15 is the first driving component; 16 is the second driving component; and 17 is the third driving component. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] 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.

[0034] like Figures 1 to 5 As shown, this solution provides a clamping device for a workpiece. The workpiece 1 has a first part 2 and a second part 3 extending vertically. The clamping device includes: a support frame 4; an adsorption member 5, which is disposed on the support frame 4 for adsorbing the workpiece 1; a positioning member 6, which is ellipsably connected to the support frame 4 and located on one side of the adsorption member 5, and the positioning member 6 has a first working position and a second working position; and a clamping member 7, which is hinged to the support frame 4 and located on the other side of the adsorption member 5. The clamping member 7 and the adsorption member 5 respectively abut against the two sides of the second part 3 for clamping the workpiece 1. When the positioning member 6 is in the first working position, the bottom of the positioning member 6 protrudes from the lower end face of the adsorption member 5 and together with the lower end face of the adsorption member 5 forms a positioning structure. The positioning structure abuts against the upper surface and the two side edges of the first part 2 for positioning the workpiece 1. When the positioning member 6 is in the second working position, it is used to release the positioning of the workpiece 1.

[0035] During operation, the support frame 4 moves the adsorption component 5, positioning component 6, and clamping component 7 synchronously to the gripping position above the workpiece 1. At this time, the positioning component 6 is in the first working position, and its bottom and the lower end face of the adsorption component 5 together form a positioning structure. Before the workpiece 1 is adsorbed, the two side edges of its first part 2 first contact the positioning structure to achieve preliminary positioning. Subsequently, the adsorption component 5 is activated, adsorbs the workpiece 1, and fixes the upper end face of the first part 2 on the positioning structure. At this time, the first part 2 of the workpiece 1 is fixed in the positioning structure and is initially positioned. Next, the clamping component 7 rotates around the hinge point and moves towards the adsorption component 5 until it clamps the two sides of the second part 3 of the workpiece 1 together with the adsorption component 5, completing the clamping. The workpiece 1 is clamped and precisely positioned on the support frame 4.

[0036] After clamping is completed, the positioning element 6 switches from the first working position to the second working position to avoid interfering with subsequent handling and placement operations. In this solution, the clamping device simultaneously completes the precise positioning of workpiece 1 during the clamping process, achieving integrated clamping and positioning. This design not only ensures the positional accuracy of workpiece 1 during handling but also eliminates the need for additional positioning adjustments after reaching the target position, thereby improving operational efficiency and reducing production costs.

[0037] In order for the positioning member 6 and the adsorption member 5 to work together to position the workpiece 1, the positioning member 6 is provided with a hollow part 8 that runs through the vertical direction, and one side of the hollow part 8 has an opening. The hollow part 8 is movably sleeved on the outer periphery of one side of the adsorption member 5 through the opening, so that the positioning member 6 can slide up and down relative to the adsorption member 5 in the vertical direction.

[0038] When the positioning component 6 is in the first working position, the bottom of its hollow part 8 protrudes from the lower end face of the adsorption component 5, and the inner walls on both sides of the hollow part 8 protruding from the adsorption component 5 together with the lower end face of the adsorption component 5 form a positioning structure.

[0039] During operation, the support frame 4 lowers the adsorption component 5, positioning component 6, and clamping component 7 to a gripping position above the workpiece 1, at which point the positioning component 6 is in its first working position. As the support frame 4 descends, the first part 2 of the workpiece 1 enters the positioning structure from bottom to top, with its two side edges contacting the inner walls of the hollowed-out portion 8. Under guidance, it automatically corrects horizontal positional deviations, achieving initial centering. This passive self-centering process, achieved through a mechanical structure, significantly improves the initial positioning accuracy of the workpiece 1 gripping.

[0040] Subsequently, the adsorption component 5 activates and generates negative pressure adsorption force, pulling the workpiece 1 upwards and ensuring that the upper surface of the first part 2 is tightly fitted with the lower end face of the adsorption component 5, thus completing the vertical fixation. During this adsorption process, the workpiece 1 slides upwards relative to the positioning component 6 along the inner wall of the hollow part 8, while the positioning component 6 remains relatively stationary, maintaining effective horizontal limiting and ensuring that positioning accuracy is not lost throughout the clamping process. This design achieves dynamic coordination between positioning and adsorption, maintaining precise centering even as the workpiece 1 is lifted.

[0041] After the first part 2 of workpiece 1 is stably adsorbed, the clamping member 7 rotates around the hinge point and moves closer to the adsorption member 5, clamping both sides of the second part 3 of workpiece 1 together with the adsorption member 5, completing the overall clamping. After clamping is completed, the positioning member 6 switches to the second working position and slides upward along the outer periphery of the adsorption member 5 through the hollow part 8 to detach from workpiece 1, avoiding interference in subsequent operations.

[0042] More preferably, the positioning element 6 is composed of a vertical part 9 and a bent part 10. The vertical part 9 slides through the guide groove 11 provided on the support frame 4, and the bent part 10 extends horizontally from the end of the vertical part 9 toward the adsorption element 5. The hollow part 8 is provided on the bent part 10. This structural design reasonably separates the guiding function and positioning function of the positioning element 6 in space: the sliding cooperation between the vertical part 9 and the guide groove 11 forms a clear linear guiding path, effectively constraining the degree of freedom of the positioning element 6 during the lifting process, preventing it from deflecting or swaying, and significantly improving the stability of the movement and the repeatability of the positioning accuracy; at the same time, the horizontal extension of the bent part 10 allows the hollow part 8 to be accurately aligned with one side of the adsorption element 5, ensuring that the first part 2 of the workpiece 1 can smoothly enter the positioning structure formed by the cooperation between the inner wall of the hollow part 8 and the adsorption element 5, achieving high-precision self-centering.

[0043] Furthermore, this structure optimizes the overall spatial layout, avoiding motion interference between the vertical part 9 and the workpiece 1, the adsorption component 5, or the clamping component 7, making it suitable for compact installation environments. The cooperation between the guide groove 11 and the vertical part 9 also improves the structural rigidity and load-bearing capacity, ensuring the long-term reliable operation of the positioning component 6 under frequent movements and contact impacts. Simultaneously, it enables precise switching of the positioning component 6 between the first and second working positions. In summary, this optimized structure not only enhances the stability and reliability of the clamping device in this solution but also highlights its technical advantages in precision clamping.

[0044] More preferably, the adsorption element 5 is connected to a connector 12, which connects the adsorption element 5 to an external gas source and vacuum control system, enabling the opening and closing of the gas path and mode switching. The adsorption element 5 has an internal airflow channel, one end of which is connected to the connector 12, and the other end extends to the bottom of the adsorption element 5 and connects to the adsorption area on the bottom surface of the adsorption element 5. When the adsorption element 5 descends and adheres to the surface of the workpiece 1, a sealed adsorption cavity is formed between the adsorption area and the workpiece 1. By controlling the working mode of the gas source, a negative pressure is formed in the airflow channel during suction, achieving stable adsorption of the workpiece 1; when atmospheric air is introduced or positive pressure is applied, the vacuum state in the adsorption cavity is quickly broken, achieving rapid and residue-free release of the workpiece 1.

[0045] This airflow structure design integrates the airflow channel within the adsorption component 5, eliminating the need for complex external piping. This not only makes the overall structure more compact and reduces the risk of external interference, but also facilitates integration into multi-station, confined spaces, or high-density automated production lines. Through this design, the solution achieves efficient and reliable clamping and instantaneous release of workpiece 1, making it particularly suitable for the precision gripping of flat or lightweight workpieces, effectively preventing the risk of detachment during handling.

[0046] More preferably, the clamping member 7 adopts an integrated structure consisting of a connecting part 13 and a clamping part 14, wherein the connecting part 13 is hinged to the support frame 4 by a shaft pin, and one end of the clamping part 14 is provided with a clamping end that bends toward the adsorption member 5. The clamping end is arranged opposite to the adsorption member 5 and can clamp the second part 3 of the workpiece 1 from both sides.

[0047] To enable the positioning component 6 to move up and down on the support frame 4, the support frame 4 is equipped with a first driving component 15, the output end of which is connected to the upper end of the vertical part 9 of the positioning component 6, for driving the positioning component 6 to move up and down relative to the support frame 4 along the guide groove 11. This design can control the positioning component 6 to enter the first working position in a timely manner during the gripping stage, guide and limit the workpiece 1, and rise to the second working position after clamping is completed, detaching from the workpiece 1, thus avoiding interference in subsequent processes.

[0048] To enable the opening and closing action of the clamping member 7, the support frame 4 is also provided with a second driving member 16, the output end of which is connected to the connecting part 13 of the clamping member 7. This driving member 7 is used to rotate around the shaft pin, so that the clamping end cooperates with the adsorption member 5 to clamp or release the second part 3 of the workpiece 1 from both sides, ensuring that the clamping action is reliable and the response is timely.

[0049] To enable the vertical movement of the entire clamping device, this solution also includes a third driving component 17. The support frame 4 is fixedly connected to the output end of the third driving component 17. The third driving component 17 drives the support frame 4 to rise and fall as a whole, thereby controlling the vertical stroke of the clamping device in this solution during the gripping, lifting, transporting and placing of the workpiece 1, so as to achieve precise positioning and safe avoidance.

[0050] It is worth noting that the first drive component 15 and the second drive component 16 are mounted on the support frame 4 and are driven to rise and fall together with the support frame 4 by the third drive component 17. These three components form a control architecture of "decoupling global motion from local actions": the third drive component 17 is responsible for overall positioning, while the first drive component 15 and the second drive component 16 are responsible for the precise operations before and after clamping. This design achieves fully automated coordination of positioning, adsorption, clamping, and release, which not only improves the work cycle and system reliability but also enhances the device's adaptability to different working conditions, making it particularly suitable for intelligent manufacturing scenarios such as multi-station linkage and high-precision assembly. The first drive component 15, the second drive component 16, and the third drive component 17 can be motors, hydraulic cylinders, or pneumatic cylinders.

[0051] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is 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 as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0053] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A clamping device for a workpiece, characterized in that, The workpiece has a first portion and a second portion extending in a vertical direction, and the clamping device includes: Support frame; An adsorption element, which is mounted on the support frame, is used to pick up the workpiece; A positioning element, which is vertically connected to the support frame and located on one side of the adsorption element, has a first working position and a second working position. A clamping member, which is hinged to the support frame and located on the other side of the adsorption member, and the clamping member and the adsorption member respectively abut against the two sides of the second part for clamping the workpiece; When the positioning element is in the first working position, the bottom of the positioning element protrudes from the lower end face of the adsorption element and together with the lower end face of the adsorption element to form a positioning structure. The positioning structure abuts against the upper surface and the two side edges of the first part for positioning the workpiece. When the positioning element is in the second working position, it is used to release the positioning of the workpiece.

2. The workpiece clamping device as described in claim 1, characterized in that, The positioning component has a hollowed-out portion that runs vertically through it, and one side of the hollowed-out portion has an opening. The hollowed-out portion is movably fitted onto the outer periphery of one side of the adsorption component through the opening. When the positioning component is in the first working position, the positioning structure is formed between the inner walls of both sides of the hollowed-out portion and the lower end face of the adsorption component.

3. The workpiece clamping device as described in claim 2, characterized in that, The positioning member has a vertical part and a bent part. The vertical part is connected to the support frame, and the bent part extends horizontally from the end of the vertical part toward the adsorption member. The hollow part is provided in the bent part.

4. The workpiece clamping device as described in claim 3, characterized in that, The support frame is provided with a guide groove, and the vertical part slides through the guide groove to provide guidance for the lifting and lowering of the positioning component.

5. The workpiece clamping device as described in claim 1, characterized in that, The adsorption element is connected to a connector for connecting the adsorption element to a gas source.

6. The workpiece clamping device as described in claim 5, characterized in that, An airflow channel is provided inside the adsorption element. One end of the airflow channel is connected to the connector, and the other end extends to the adsorption area at the bottom of the adsorption element.

7. The workpiece clamping device as described in claim 1, characterized in that, The clamping member has a connecting part and a clamping part. The connecting part is hinged to the support frame by a shaft pin. One end of the clamping part is provided with a clamping end that bends toward the adsorption member. The clamping end and the adsorption member are respectively pressed against the two sides of the second part.

8. The workpiece clamping device as described in claim 3, characterized in that, The support frame is provided with a first driving component, the output end of which is connected to the upper end of the vertical part, for driving the positioning component to switch between the first working position and the second working position.

9. The workpiece clamping device as described in claim 7, characterized in that, The support frame is also provided with a second driving member, the output end of which is connected to the connecting part to drive the clamping member to rotate.

10. The workpiece clamping device as described in claim 1, characterized in that, It also includes a third drive component, the support frame is connected to the third drive component, and the third drive component is used to drive the support frame to rise and fall.

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