Universal sheet gripping mechanism

Abstract

The utility model is suitable for general sheet clamping equipment technical field provides a kind of general sheet clamping mechanism, comprising: jaw support;Fixed on the motor mounting plate of jaw support, the surface side of motor mounting plate is equipped with stepper motor, and one end of motor mounting plate is equipped with origin switch support;Two-way eccentric wheel is installed in the output end of stepper motor, the end side fixedly connected with copper column of two-way eccentric wheel, and two wheel faces of two-way eccentric wheel are embedded with deep groove ball bearing, and the side of copper column is fixed with origin baffle;Photoelectric switch is installed on the origin switch support;M two shaft shoulder screws are fixedly connected in the inner ring of deep groove ball bearing;…….The general sheet clamping mechanism provided in the scheme solves the problems of difficult control of cylinder jaw clamping force, easy scratching of sheet, non-universal jaw and poor adaptability of carrying wide and thick materials, and realizes accurate, flexible and stable clamping.

Description

Technical Field

[0001] This utility model belongs to the technical field of general thin sheet clamping equipment, and in particular relates to a general thin sheet clamping mechanism. Background Technology

[0002] A general-purpose sheet gripping device is a mechanical device used to grip and transport various sheet-like materials. The mechanism includes grippers, a drive assembly, and a support structure. The grippers can be flexibly adjusted according to the material and thickness of the sheet. The drive assembly provides smooth opening, closing, and movement, ensuring that the sheet is not scratched or deformed during transport. It is suitable for various industries such as semiconductors, glass, metals, and composite materials, achieving efficient, safe, and precise sheet gripping and transfer.

[0003] However, the existing general-purpose sheet gripping mechanism has the problem of difficulty in accurately controlling the clamping force when handling sheet-like or easily scratched materials. It is easy to cause scratches or deformation on the material surface due to cylinder impact or excessive pressure. In addition, the cylinder gripper lacks flexibility when the clamping width or material type changes, requiring the replacement of the cylinder or the entire structure. It cannot quickly adapt to workpieces of different sizes, materials or thicknesses, which limits its versatility and operating accuracy. Utility Model Content

[0004] This utility model provides a universal sheet gripping mechanism, which aims to solve the problem of existing universal sheet gripping mechanisms having difficulty in accurately controlling the clamping force when handling thin or easily scratched materials. The material surface is easily scratched or deformed due to cylinder impact or excessive pressure. In addition, the cylinder gripper lacks flexibility when the clamping width or material type changes, requiring the replacement of the cylinder or the entire structure. It cannot quickly adapt to workpieces of different sizes, materials or thicknesses, thus limiting the problems of versatility and operational accuracy.

[0005] This utility model is implemented as follows: a general-purpose thin-sheet gripping mechanism, comprising: a gripper bracket; a motor mounting plate fixed on the gripper bracket, a stepper motor mounted on one side of the motor mounting plate, and a home switch bracket mounted on one end of the motor mounting plate; a bidirectional eccentric wheel mounted on the output end of the stepper motor, a copper column fixedly connected to one end of the bidirectional eccentric wheel, deep groove ball bearings fitted on the two wheel surfaces of the bidirectional eccentric wheel, and a home stop plate fixed on one side of the copper column; a photoelectric switch mounted on the home switch bracket; and a fixed... A two-shoulder M screw is fixedly connected to the inner ring of the deep groove ball bearing; a lower pressure drive plate and an upper push drive plate are fixedly connected to the ends of the two-shoulder M screw respectively, an upper pressure plate bracket is fixedly connected to the top surface of the lower pressure drive plate, a lower clamping jaw is installed on one side of the surface of the upper push drive plate, and an upper clamping jaw is installed on one side of the upper pressure plate bracket; a linear guide rail slides and is aligned between the lower pressure drive plate and the upper push drive plate; a three-shoulder M screw is fixedly connected to one side of the surface of the lower pressure drive plate and the upper push drive plate, and a tension spring is connected to one side of the surface of the three-shoulder M screw.

[0006] Preferably, the lower pressure drive plate and the upper top drive plate are positioned opposite each other, and the lower pressure drive plate and the upper top drive plate move towards or away from each other through a deep groove ball bearing.

[0007] Preferably, two sets of linear guides are provided, and the lower pressure drive plate and the upper top drive plate slide axially towards each other through the linear guides.

[0008] Preferably, the origin baffle is positioned directly opposite the photoelectric switch, and the origin baffle is located on the outer side of the upper drive plate.

[0009] Preferably, the motor mounting plate and the surface of the linear guide are also fitted with M-shaped three-axis shoulder screws.

[0010] Preferably, the tension spring is provided in two sets. The first set of tension springs is provided between the M three-axis shoulder screws on the motor mounting plate and the upper drive plate, and the second set of tension springs is provided between the linear guide and the lower drive plate.

[0011] Preferably, the lower gripper and the upper gripper are positioned relative to each other, and the lower gripper and the upper gripper move towards or away from each other through the lower pressure drive plate and the upper top drive plate.

[0012] Compared with related technologies, the universal sheet clamping mechanism provided by this utility model has the following advantages:

[0013] The device controls the opening and closing of the grippers by driving a bidirectional eccentric wheel with a stepper motor. The clamping force and clamping impact can be precisely controlled by adjusting the motor speed and the tension spring preload, avoiding damage to easily scratched materials. The gripper width and material can be flexibly changed to adapt to workpieces with different thicknesses, widths and surface requirements, realizing stable clamping, handling and transfer of thin sheet materials, while ensuring synchronous movement and repeatability of the grippers, improving versatility and operational reliability. Attached Figure Description

[0014] Figure 1 This is a side view of the structure of the present utility model.

[0015] Figure 2 This is a side view of the assembly structure of this utility model;

[0016] Figure 3 This is a side view of the structure of the present invention in its open state;

[0017] Figure 4 This is a side view of the structure of the present invention in the clamping state;

[0018] Figure 5 This is a side view of the structure of the first embodiment of this utility model in use;

[0019] Figure 6 This is a side view of the structure of a second embodiment of the present invention in use.

[0020] In the diagram: 1. Gripper bracket; 2. Motor mounting plate; 3. Stepper motor; 4. Origin switch bracket; 5. Bidirectional eccentric wheel; 6. Photoelectric switch; 7. Copper column; 8. Deep groove ball bearing; 9. Origin baffle; 10. M two-axis shoulder screw; 11. Lower pressure drive plate; 12. Upper top drive plate; 13. Linear guide rail; 14. M three-axis shoulder screw; 15. Upper pressure plate bracket; 16. Lower gripper; 17. Tension spring; 18. Upper gripper. Detailed Implementation

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] A preferred embodiment of the universal sheet clamping mechanism provided by this utility model is, for example... Figures 1 to 6 As shown: A general-purpose thin-film gripping mechanism includes: a gripper bracket 1; a motor mounting plate 2 fixed on the gripper bracket 1, a stepper motor 3 mounted on one side of the surface of the motor mounting plate 2, and a home switch bracket 4 mounted on one end of the motor mounting plate 2; a bidirectional eccentric wheel 5 mounted on the output end of the stepper motor 3, a copper column 7 fixedly connected to one end of the bidirectional eccentric wheel 5, deep groove ball bearings 8 fitted on the two wheel surfaces of the bidirectional eccentric wheel 5, and a home stop plate 9 fixed on one side of the copper column 7; a photoelectric switch 6 mounted on the home switch bracket 4; and an M2 fixedly connected to the inner ring of the deep groove ball bearing 8. Shoulder screw 10; a lower drive plate 11 and an upper drive plate 12 are fixedly connected to the ends of the M-two shoulder screw 10 respectively. An upper pressure plate bracket 15 is fixedly connected to the top surface of the lower drive plate 11. A lower clamping jaw 16 is installed on one side of the surface of the upper drive plate 12. An upper clamping jaw 18 is installed on one side of the upper pressure plate bracket 15. A linear guide rail 13 slides between the lower drive plate 11 and the upper drive plate 12. An M-three shoulder screw 14 is fixedly connected to one side of the surface of the lower drive plate 11 and the upper drive plate 12. A tension spring 17 is connected to one side of the surface of the M-three shoulder screw 14.

[0024] In this embodiment, the device drives the bidirectional eccentric wheel 5 to rotate via a stepper motor 3. The two wheel surfaces of the bidirectional eccentric wheel 5 abut against the deep groove ball bearings 8, which are fixed to the lower drive plate 11 and the upper drive plate 12 by M-shaped shoulder screws 10, thereby realizing the vertical linear motion of the two drive plates. When the motor is at the origin position, the origin baffle 9 corresponds to the photoelectric switch 6, and the lower drive plate 11 and the upper drive plate 12 are in a relatively open position, with the upper gripper 18 separating from the lower gripper 16. As the motor rotates 180 degrees, the other side of the bidirectional eccentric wheel 5 reaches its highest point, and the lower drive plate 11 and the upper drive plate 12 move towards each other, driving the gripper to complete the clamping action. The periodic opening and closing of the gripper can be achieved by the continuous forward and reverse rotation of the motor. Two sets of tension springs 17 ensure that the bearings are always in contact with the eccentric wheel to avoid idle travel, in conjunction with the linear guide rail 13. To ensure precise linear sliding of the drive plate, stable, synchronous, and reliable clamping by the grippers is achieved. Finally, it should be noted that this gripper device is versatile; the grippers can be flexibly replaced according to the properties of the workpiece being clamped. For materials with high surface finish requirements, plastic grippers can be installed to prevent scratches. For hard materials such as metals, metal grippers can be used to ensure clamping strength. For materials of different thicknesses or widths, grippers of different thicknesses can be replaced, or a bidirectional symmetrical gripper mechanism can be used to achieve stable clamping of wide materials. The device can also be used in conjunction with additional motion axes to combine clamping actions with handling and transfer movements, enabling the entire clamping system to not only clamp and release but also transfer workpieces, improving operational flexibility and adaptability. At the same time, it maintains the high-precision synchronous motion advantages brought by the original eccentric wheel drive, linear guide rail 13, and tension spring 17.

[0025] In a further preferred embodiment of the present invention, the lower pressure drive plate 11 and the upper top drive plate 12 are positioned opposite each other, and the lower pressure drive plate 11 and the upper top drive plate 12 achieve opposite or opposite movements through the deep groove ball bearing 8.

[0026] In this embodiment, the lower pressure drive plate 11 and the upper top drive plate 12 are positioned opposite each other, so that they can move simultaneously in opposite or opposite directions under the drive of the bidirectional eccentric wheel 5, thereby realizing the synchronous opening and closing of the upper jaw 18 and the lower jaw 16, ensuring that the clamping center is consistent with the workpiece axis, and improving clamping accuracy and stability.

[0027] In a further preferred embodiment of this utility model, two sets of linear guide rails 13 are provided, and the lower pressure drive plate 11 and the upper top drive plate 12 achieve axial sliding towards each other through the linear guide rails 13.

[0028] In this embodiment, two sets of linear guides 13 respectively constrain the lower pressure drive plate 11 and the upper push drive plate 12, so that the two drive plates can slide smoothly along the axial direction under the action of the eccentric wheel, avoiding tilting or jamming caused by eccentric force, and ensuring the alignment and linear precision of the upper and lower clamps.

[0029] In a further preferred embodiment of this utility model, the position of the origin baffle 9 is aligned with that of the photoelectric switch 6, and the origin baffle 9 is disposed on the outer side of the upper drive plate 12.

[0030] In this embodiment, the origin baffle 9 and the photoelectric switch 6 are installed opposite each other, so that the device can accurately sense the initial position of the motor through photoelectric signals. By recording the initial state, the rotation angle of the stepper motor 3 can accurately control the opening and closing range of the gripper, avoiding the accumulation of stroke error.

[0031] In a further preferred embodiment of this utility model, the surfaces of the motor mounting plate 2 and the linear guide rail 13 are also equipped with M three-axis shoulder screws 14.

[0032] In this embodiment, M three-axis shoulder screws 14 are installed on both the motor mounting plate 2 and the linear guide rail 13 as hanging points for the tension spring 17. This distribution method can ensure that the tension spring 17 maintains stable tension throughout the movement of the two sets of drive plates, always pressing the bearing against the surface of the eccentric wheel, and ensuring continuous movement.

[0033] In a further preferred embodiment of this utility model, two sets of tension springs 17 are provided. The first set of tension springs 17 is provided between the M three-axis shoulder screws 14 on the motor mounting plate 2 and the upper drive plate 12, and the second set of tension springs 17 is provided between the linear guide rail 13 and the lower drive plate 11.

[0034] In this embodiment, two sets of tension springs 17 are respectively distributed between the motor mounting plate 2 and the upper drive plate 12, and between the linear guide rail 13 and the lower drive plate 11. This arrangement ensures that both drive plates are subjected to preload, reduces gaps and return gaps, and makes the opening and closing of the two grippers smooth.

[0035] In a further preferred embodiment of the present invention, the lower gripper 16 and the upper gripper 18 are positioned relative to each other, and the lower gripper 16 and the upper gripper 18 move toward or away from each other through the lower pressure drive plate 11 and the upper top drive plate 12.

[0036] In this embodiment, the lower jaw 16 and the upper jaw 18 are arranged in a relatively upright position to ensure that they move strictly towards or away from each other under the drive of the lower pressure drive plate 11 and the upper top drive plate 12, forming a symmetrical clamping structure. This enables the workpiece to be clamped in the center, avoids offset, and improves clamping stability and repeatability.

[0037] In summary, the device drives the bidirectional eccentric wheel 5 to rotate via the stepper motor 3. The two sides of the bidirectional eccentric wheel 5 are in contact with the deep groove ball bearings 8, which are fixed on the lower pressure drive plate 11 and the upper top drive plate 12. This converts the rotational motion into the relative linear motion of the two drive plates. When the motor is at the origin, the lower gripper 16 separates from the upper gripper 18, and the device is in the open state. After the motor rotates 180 degrees, the two drive plates move towards each other, and the grippers clamp. Two sets of tension springs 17 ensure that the bearings are always in close contact with the eccentric wheel, and the linear guide rail 13 ensures that the drive plates slide smoothly, thereby achieving stable and synchronous opening and closing of the grippers.

[0038] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0039] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A general-purpose sheet gripping mechanism, characterized in that, include: Gripper support (1); A motor mounting plate (2) is fixed on the gripper bracket (1). A stepper motor (3) is mounted on one side of the surface of the motor mounting plate (2). A home switch bracket (4) is mounted on one end of the motor mounting plate (2). A bidirectional eccentric wheel (5) is installed at the output end of the stepper motor (3). A copper column (7) is fixedly connected to one side of the end of the bidirectional eccentric wheel (5). Deep groove ball bearings (8) are fitted on the two wheel surfaces of the bidirectional eccentric wheel (5). A source baffle (9) is fixed on one side of the copper column (7). A photoelectric switch (6) is installed on the origin switch bracket (4); M-shaped shoulder screws (10) are fixedly connected to the inner ring of the deep groove ball bearing (8); A lower pressure drive plate (11) and an upper top drive plate (12) are fixedly connected to the ends of the M-axis shoulder screw (10), respectively. An upper pressure plate bracket (15) is fixedly connected to the top surface of the lower pressure drive plate (11), a lower clamping claw (16) is installed on one side of the surface of the upper top drive plate (12), and an upper clamping claw (18) is installed on one side of the upper pressure plate bracket (15). Sliding and on the linear guide rail (13) between the lower drive plate (11) and the upper drive plate (12); An M-shaped three-shoulder screw (14) is fixedly connected to one side of the surface of the lower drive plate (11) and the upper drive plate (12), and a tension spring (17) is connected to one side of the surface of the M-shaped three-shoulder screw (14).

2. The universal sheet clamping mechanism as described in claim 1, characterized in that, The lower pressure drive plate (11) and the upper top drive plate (12) are positioned opposite each other, and the lower pressure drive plate (11) and the upper top drive plate (12) move towards or away from each other through a deep groove ball bearing (8).

3. The universal sheet clamping mechanism as described in claim 1, characterized in that, The linear guide rail (13) is provided in two sets, and the lower pressure drive plate (11) and the upper top drive plate (12) slide axially towards each other through the linear guide rail (13).

4. The universal sheet clamping mechanism as described in claim 1, characterized in that, The origin baffle (9) is positioned opposite to the photoelectric switch (6), and the origin baffle (9) is located on the outside of the upper drive plate (12).

5. The universal sheet clamping mechanism as described in claim 1, characterized in that, The motor mounting plate (2) and the linear guide rail (13) are also fitted with M three-axis shoulder screws (14).

6. The universal sheet clamping mechanism as described in claim 1, characterized in that, The tension spring (17) is provided in two sets. The first set of tension springs (17) is provided between the M three-axis shoulder screw (14) on the motor mounting plate (2) and the upper drive plate (12). The second set of tension springs (17) is provided between the linear guide rail (13) and the lower drive plate (11).

7. The universal sheet clamping mechanism as described in claim 1, characterized in that, The lower gripper (16) and the upper gripper (18) are positioned opposite each other, and the lower gripper (16) and the upper gripper (18) move towards or away from each other through the lower pressure drive plate (11) and the upper top drive plate (12).

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