An electrically powered gripper

Abstract

The utility model discloses an electric clamping jaw relates to electric clamping jaw technical field, including first sliding block clamp and second sliding block clamp, first sliding block clamp and second sliding block clamp bottom all install guide rail sliding block, the guide rail sliding block bottom all slidingly equipped with guide rail strip, the guide rail strip all installs in the upper end both sides guide rail mounting surface department of casing, the upper end middle part of casing is equipped with bearing seat mounting surface, the bearing seat mounting surface top is equipped with screw rod subassembly, the screw rod subassembly includes both ends installation bidirectional screw rod of bearing seat mounting surface, is equipped with protection subassembly in the screw rod subassembly top, protection subassembly covers the gap between screw rod subassembly with guide rail strip. The utility model discloses through the coplanar arrangement in the height direction of guide rail strip and staggered arrangement in horizontal direction, is favorable to the length size in compression opening and closing direction, and the guide rail strip is installed to the upper end of casing, thereby reduces the eccentric load of external load to screw rod nut.

Description

Technical Field

[0001] This utility model relates to the field of electric gripper technology, specifically an electric gripper. Background Technology

[0002] Electric grippers, as core end-effectors in modern automation systems, are increasingly permeating key areas such as industrial robots, precision assembly lines, logistics sorting systems, and flexible manufacturing cells. Their core mission is to achieve high-speed, high-precision gripping, reliable handling, and accurate placement of various workpieces. This capability makes them particularly suitable for handling diverse objects with varying requirements, such as tiny electronic components, precision automotive parts, medical devices with extremely high cleanliness requirements, and packaged goods of various shapes, covering a wide range of automation scenarios from micro-assembly to heavy-duty handling.

[0003] In today's manufacturing industry, which pursues ultimate efficiency, high flexibility, and intelligent transformation, electric grippers demonstrate significant advantages over traditional pneumatic grippers. Their superior controllability allows for precise, dynamic, and digital adjustment of clamping force, position, and speed, protecting fragile workpieces and meeting the refined requirements of complex processes. Their millisecond-level response speed seamlessly integrates with high-speed production lines, significantly improving production cycle time. Furthermore, the highly integrated and modular design of electric grippers makes them easy to interface with various control systems, offering user-friendly programming interfaces and facilitating debugging and changeovers, greatly enhancing the adaptability and flexibility of production lines. It is precisely these core technological advantages—precise controllability, rapid response, and ease of integration and programming—that have allowed electric grippers to gradually replace traditional pneumatic solutions, becoming a key enabling component driving leaps in production line automation and deepening of intelligence. They can effectively handle the stringent production requirements of high-precision positioning and high-repeat cycle times, and are also suitable for special operating conditions such as cleanrooms, explosion-proof environments, or environments requiring low-noise operation. The widespread application of electric grippers has become an indispensable part of modern manufacturing to enhance its core competitiveness and achieve agile, flexible, and intelligent production.

[0004] The authorization announcement number is CN217513899U, which discloses a high-load gripper structure. Its innovation lies in the use of at least two parallel guide rails, with the left and right grippers fixed to multiple left and right sliders on the corresponding guide rails. This design effectively distributes the torque generated at the gripping point across multiple sliders when holding heavy objects, significantly reducing the load and damage risk of individual sliders, enhancing the gripper's ability to resist working torque, and thus improving the overall load limit and service life. However, this gripper uses left and right helical screws to drive the opening and closing action. Its typical structure involves fixing the guide rails to a guide rail seat, while the left and right helical screws are fixed to the housing, usually located below the guide rails. To connect the screw nut to the guide rail sliders, a long slot running through its length must be provided on the housing to allow the connecting component to reciprocate with the nut. This structure has significant drawbacks: First, the longitudinal stacking of the lead screw below the guide rail makes it difficult to achieve a compact design for the gripper in the height direction; second, due to the large vertical distance between the guide rail slider and the drive lead screw axis, when the slider is under load, it will generate a large additional overturning moment on the lead screw nut, causing the lead screw to bear an off-center load, aggravating wear, and seriously affecting the service life of the lead screw and the reliability of transmission; third, the long slots opened on the housing seriously damage its structural integrity, resulting in insufficient overall rigidity, which further weakens the stability and accuracy of the gripper under heavy load or impact conditions.

[0005] Based on this, an electric gripper is now provided that can eliminate the drawbacks of existing devices. Utility Model Content

[0006] The purpose of this invention is to provide an electric gripper to solve the problems in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: An electric gripper includes a first slider clamp and a second slider clamp. A guide rail slider is mounted at the bottom end of both the first and second slider clamps. A guide rail strip is slidably mounted at the bottom end of each guide rail slider. The guide rail strip is mounted on the upper end of a housing. The housing is an irregularly shaped tubular structure, with its first sidewall serving as a mounting surface. This surface includes a bearing seat mounting surface in the middle and guide rail mounting surfaces on both sides of the bearing seat mounting surface. The guide rail strip is mounted on the guide rail mounting surface. A lead screw assembly is provided above the bearing seat mounting surface. The lead screw assembly includes a bidirectional screw with both ends mounted on the bearing seat mounting surface. A protective component is provided above the lead screw assembly, covering the gap between the lead screw assembly and the guide rail strip.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative: the bottom end of the guide rail slider is provided with a sliding groove, the inner side of the sliding groove is in close contact with the outer side of the guide rail, and both sides of the guide rail are provided with limiting sliding grooves.

[0009] In one alternative: each of the limiting grooves is slidably provided with a limiting slide rod, and the limiting slide rod is fixedly provided in the sliding groove.

[0010] In one alternative embodiment: the lead screw assembly includes a lead screw nut and a bidirectional screw, the two ends of the bidirectional screw are mounted on the bearing seat mounting surface via bearings, and sliding mounting blocks are fixedly provided on the opposite side walls of the first slider clamp and the second slider clamp, the sliding mounting blocks being connected to the lead screw nut via a connecting assembly.

[0011] In one alternative: the connecting assembly includes a clearance-fitting connecting block and a connecting hole, the connecting block and the connecting hole being respectively disposed on the sliding mounting block and the lead screw nut.

[0012] In one alternative embodiment: a driven gear is fixedly mounted on one end of the bidirectional screw, an idler gear meshes with the driven gear, the idler gear is rotatably mounted on a gear carrier, the gear carrier is fixedly mounted inside the housing, a driving gear meshes with the idler gear, the driving gear is fixedly connected to the output end of the motor, and the motor is fixedly mounted inside the housing.

[0013] In one alternative: the protective component includes a dustproof baffle, with fixed seats installed at both ends of the dustproof baffle. The two fixed seats are respectively fixed at both ends of the housing. Baffles are provided on both sides of the dustproof baffle at positions corresponding to the positions of the first slider clamp and the second slider clamp.

[0014] In one alternative: both the first slider clamp and the second slider clamp have mounting screw holes at one end, and both the first slider clamp and the second slider clamp have mounting seats at one end. The mounting seats are fixedly connected to the first slider clamp and the second slider clamp by screws.

[0015] In one alternative: a gap is left between the upper surface of the sliding mounting block and the lower surface of the mounting base, and the dustproof baffle passes through the gap, so that the dustproof baffle isolates the sliding mounting block from the first slider clamp.

[0016] In one alternative: the first slider clamp and the second slider clamp are arranged alternately.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention achieves performance optimization and cost control through the following key structural designs: The guide rails adopt a unique layout where they are coplanar in the height direction and staggered in the horizontal direction. This arrangement strategy significantly compresses the overall length of the device in the opening and closing direction, making the structure more compact. Simultaneously, the guide rails are directly mounted and fixed to the upper end of the housing. This high-position mounting point design, combined with the compact layout, effectively reduces the eccentric torque (eccentric load) generated when external loads are transmitted to the lead screw and nut, thereby improving the stability and lifespan of the transmission system. The housing adopts an integral through-type design, and its rectangular geometric cross-section provides excellent torsional resistance, ensuring the device has strong rigidity to resist torsional deformation. This regular rectangular cross-section design is also very suitable for mass production using efficient extrusion molding processes, significantly reducing manufacturing costs and improving production efficiency. A mounting base is provided above the bidirectional lead screw. The sliding mounting block is fixedly connected to the first slider clamp and the second slider clamp on the side. A certain gap is specially reserved between the sliding mounting block and the upper mounting base. A horizontally set dustproof baffle cleverly passes through this reserved gap and completely covers the space above the bidirectional lead screw, which can effectively protect the precision and critical bidirectional lead screw, prevent dust, debris and other contaminants from entering its transmission area, and ensure its smooth and reliable long-term operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the installation of the first and second slider clamps of this utility model.

[0020] Figure 3 This is a schematic diagram of the mounting base of this utility model.

[0021] Figure 4 This is a schematic diagram of the installation of the electric motor of this utility model.

[0022] Figure 5 This is a schematic diagram of the lead screw nut structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the dustproof baffle structure of this utility model.

[0024] Figure 7 This is a schematic diagram of the shell structure of this utility model.

[0025] Figure reference numerals: 11 First slider clamp, 12 Second slider clamp, 13 Guide rail slider, 14 Guide rail strip, 15 Sliding mounting block, 16 Lead screw nut, 17 Double-acting screw, 18 Bearing, 19 Driven gear, 20 Motor, 21 Housing, 22 Mounting base, 23 Dustproof baffle, 24 Guide rail mounting surface, 25 Bearing seat mounting surface. Detailed Implementation

[0026] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0027] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0028] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0029] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0030] In one embodiment, such as Figures 1-7As shown, an electric gripper includes a first slider clamp 11 and a second slider clamp 12. Guide rail sliders 13 are mounted on the bottom ends of both the first slider clamp 11 and the second slider clamp 12. Guide rail strips 14 are slidably mounted on the bottom ends of the guide rail sliders 13. The guide rail strips 14 are mounted on the upper end of a housing 21. The housing 21 is an irregularly shaped tubular structure. The integrally formed housing enhances the overall rigidity of the gripper and isolates transmission structures such as lead screw assemblies and drive structures such as electric motors, thereby preventing lubricating oil or other impurities from affecting the electric motor. Its first sidewall is a mounting surface, including a bearing seat mounting surface located in the middle. 25 and guide rail mounting surfaces 24 on both sides of the bearing seat mounting surface. The guide rail 14 is mounted on the guide rail mounting surface 24. A lead screw assembly is provided above the bearing seat mounting surface 25. The lead screw assembly includes a bidirectional screw 17 with both ends mounted on the bearing seat mounting surface 25. A protective component is provided above the lead screw assembly. The protective component covers the gap between the lead screw assembly and the guide rail 14. The lead screw assembly facilitates the movement of the first slider clamp 11 and the second slider clamp 12. The protective component helps to reduce the impact of dust on the first slider clamp 11 and the second slider clamp 12 during use. according to Figure 2 , Figure 5 As shown, the bottom end of the guide rail slider 13 is provided with a sliding groove, the inner side of the sliding groove is in close contact with the outer side of the guide rail 14, and both sides of the guide rail 14 are provided with limiting sliding grooves. Limiting sliding rods are slidably provided in the limiting sliding grooves, and the limiting sliding rods are fixedly provided in the sliding grooves. In use, it is convenient to limit the first sliding clamp 11 and the second sliding clamp 12.

[0031] according to Figure 3 , Figure 4 As shown, the lead screw assembly includes a lead screw nut 16 and a bidirectional screw 17. The two ends of the bidirectional screw 17 are mounted on the bearing seat mounting surface via bearings. Sliding mounting blocks 15 are fixedly provided on the opposite side walls of the first slider clamp 11 and the second slider clamp 12. The sliding mounting blocks 15 are connected to the lead screw nut 16 via a connecting assembly.

[0032] According to such Figure 5 As shown, the connecting assembly includes a clearance-fitting connecting block and a connecting hole, which are respectively disposed on the sliding mounting block 15 and the lead screw nut 16.

[0033] According to such Figure 4As shown, a driven gear 19 is fixedly mounted on one end of the bidirectional screw 17. An idler gear meshes with the driven gear 19. The idler gear is rotatably mounted on a gear carrier, which is fixed inside the housing 21. A driving gear meshes with the idler gear. The driving gear is fixedly connected to the output end of the motor 20. The motor 20 is fixed inside the housing 21. Sealing baffles are provided at both ends of the housing 21. In use, when the first slider clamp 11 and the second slider clamp 12 need to work for clamping, the motor 20 is started. The output end of the motor 20 drives the driving gear to rotate. The driving gear drives the bidirectional screw 17 to rotate through the idler gear and the driven gear 19. The lead screw nut 16 is threadedly engaged with the bidirectional screw 17, so that the two lead screw nuts 16 move simultaneously and in opposite directions. The two lead screw nuts 16 drive the first slider clamp 11 and the second slider clamp 12 to move respectively through the sliding mounting block 15 in opposite directions, so that the first slider clamp 11 and the second slider clamp 12 perform clamping work.

[0034] according to Figure 5 , Figure 6 As shown, the protective component includes a dustproof baffle 23. Both ends of the dustproof baffle 23 are equipped with fixing seats, and the two fixing seats are respectively fixed at both ends of the housing 21. Both sides of the dustproof baffle 23 are provided with baffles at positions corresponding to the first slider clamp 11 and the second slider clamp 12. In use, when the first slider clamp 11 and the second slider clamp 12 are in use, the dustproof baffle 23 and the two baffles can reduce the entry of dust into the housing 21, so that the first slider clamp 11 and the second slider clamp 12 can work for a long time.

[0035] according to Figure 3 As shown, both the first slider clamp 11 and the second slider clamp 12 have mounting screw holes at one end, and both have mounting seats 22 at one end. The mounting seats 22 are fixedly connected to the first slider clamp 11 and the second slider clamp 12 by screws. When the first slider clamp 11 and the second slider clamp 12 need to work for clamping, the mounting seats 22 are installed on both the first slider clamp 11 and the second slider clamp 12. Then, the motor 20 is started. The output end of the motor 20 drives the drive gear to rotate. The drive gear drives the bidirectional screw 17 to rotate through the idler gear and the driven gear 19. The screw nut 16 and the bidirectional screw 17 are threaded together, so that the two screw nuts 16 move simultaneously and in opposite directions. The two screw nuts 16 drive the first slider clamp 11 and the second slider clamp 12 to move respectively through the sliding mounting block 15, and the moving directions are opposite, so that the mounting seats 22 move, so as to perform the clamping work.

[0036] A gap is left between the upper surface of the sliding mounting block 15 and the lower surface of the mounting base 22, and the dustproof baffle passes through the gap, so that the dustproof baffle isolates the sliding mounting block from the first slider clamp 11.

[0037] The first slider clamp 11 and the second slider clamp 12 are staggered, which is beneficial for compressing the length dimension in the opening and closing direction during use.

[0038] The above embodiment discloses an electric gripper, wherein when the first slider clamp 11 and the second slider clamp 12 are required to perform clamping work, bearings 18 are installed at both ends of the bidirectional screw 17, and the bearings 18 are installed at the bearing seat mounting surface 25. A sliding mounting block 15 is provided at one end of the first slider clamp 11 and the second slider clamp 12. Two lead screw nuts 16 are symmetrically arranged on the bidirectional screw 17, and the lead screw nuts 16 are connected to the bidirectional screw 17 by threads. At the same time, a connecting hole is provided in the middle of the sliding mounting block 15, and a connecting block is inserted into the connecting hole. The connecting block is fixedly installed on the lead screw nut 16. Then, the motor 20 is started. The output of the motor 20 drives the drive gear to rotate. The drive gear drives the bidirectional screw 17 to rotate through the idler gear and the driven gear 19. The lead screw nut 16 and the bidirectional screw 17 are threaded together, so that the two lead screw nuts 16 move simultaneously and in opposite directions. The two lead screw nuts 16 drive the first slider clamp 11 and the second slider clamp 12 to move respectively through the sliding mounting block 15, and the movement directions are opposite, so that the first slider clamp 11 performs clamping work. When the first slider clamp 11 and the second slider clamp 12 are in use, the dust baffle 23 and the two baffles can reduce dust from entering the housing 21, so that the first slider clamp 11 and the second slider clamp 12 can work for a long time.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electric gripper, comprising a first slider gripper (11) and a second slider gripper (12), wherein a guide rail slider (13) is mounted on the bottom end of both the first slider gripper (11) and the second slider gripper (12), and a guide rail (14) is slidably provided on the bottom end of each guide rail slider (13), characterized in that, The electric gripper also includes, The housing (21) is an irregular tubular structure with its first sidewall as a mounting surface, including a bearing seat mounting surface (25) in the middle and guide rail mounting surfaces (24) on both sides of the bearing seat mounting surface. A lead screw assembly is located above the bearing housing mounting surface (25), and the lead screw assembly includes a bidirectional screw (17) with both ends mounted on the bearing housing mounting surface (25). A protective component is disposed above the lead screw assembly, covering the gap between the lead screw assembly and the guide rail (14).

2. The electric gripper according to claim 1, characterized in that, The bottom end of the guide rail slider (13) is provided with a sliding groove, the inner side of the sliding groove is in close contact with the outer side of the guide rail (14), and the guide rail (14) is provided with limiting sliding grooves on both sides.

3. The electric gripper according to claim 2, characterized in that, Each of the limiting grooves is equipped with a limiting slide rod, which is fixedly installed within the groove.

4. An electric gripper according to claim 1, characterized in that, The lead screw assembly includes a lead screw nut (16) and a bidirectional screw (17). The two ends of the bidirectional screw (17) are mounted on the bearing seat mounting surface through bearings. The opposite side walls of the first slider clamp (11) and the second slider clamp (12) are both fixedly provided with sliding mounting blocks (15). The sliding mounting blocks (15) are connected to the lead screw nut (16) through a connecting assembly.

5. An electric gripper according to claim 4, characterized in that, The connecting assembly includes a clearance-fitting connecting plug and a connecting hole, the connecting plug and the connecting hole being respectively disposed on the sliding mounting block (15) and the lead screw nut (16).

6. An electric gripper according to claim 5, characterized in that, One end of the bidirectional screw (17) is fixedly provided with a driven gear (19), and an idler gear is meshed on the driven gear (19). The idler gear is rotatably mounted on a gear frame, and the gear frame is fixedly mounted inside the housing (21). A driving gear is meshed on the idler gear, and the driving gear is fixedly connected to the output end of the motor (20). The motor (20) is fixedly mounted inside the housing (21).

7. An electric gripper according to claim 4, characterized in that, The protective component includes a dustproof baffle (23), and a fixing seat is installed at both ends of the dustproof baffle (23). The two fixing seats are respectively fixed at both ends of the housing (21). The dustproof baffle (23) is provided with baffles at the positions corresponding to the first slider clamp (11) and the second slider clamp (12) on both sides.

8. An electric gripper according to claim 7, characterized in that, The first slider clamp (11) and the second slider clamp (12) are each provided with a mounting screw hole at one end. The first slider clamp (11) and the second slider clamp (12) are each provided with a mounting seat (22) at one end. The mounting seat (22) is fixedly connected to the first slider clamp (11) and the second slider clamp (12) by screws.

9. An electric gripper according to claim 8, characterized in that, A gap is left between the upper surface of the sliding mounting block (15) and the lower surface of the mounting base (22), and the dustproof baffle passes through the gap, so that the dustproof baffle isolates the sliding mounting block (15) from the first slider clamp (11).

10. An electric gripper according to claim 1, characterized in that, The first slider clamp (11) and the second slider clamp (12) are arranged alternately.

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