A quick release structure of a jig

Abstract

This utility model relates to the field of work transportation technology, specifically disclosing a quick-release fixture structure, comprising: a fixture positioning plate with a downwardly protruding guide boss on its bottom surface; a lifting drive mechanism with its drive end protruding below the fixture positioning plate; and a fixture body for fixing the workpiece, with a lifting groove and a guide groove on its top surface; wherein the side of the lifting groove is an open structure to allow the drive end of the lifting drive mechanism to horizontally enter and exit the lifting groove; the opening of the guide groove faces the guide boss, so that after being driven by the lifting drive mechanism, it cooperates upward with the guide boss to achieve horizontal alignment between the fixture positioning plate and the fixture body. The quick-release fixture structure provided by this utility model can effectively solve the problem of low replacement efficiency caused by the fixture body being fixed by bolt locking in existing workpiece transfer devices.

Description

Technical Field

[0001] This utility model relates to the field of work transportation technology, and in particular to a quick-release fixture structure. Background Technology

[0002] In automated production and workpiece transfer processes, workpiece transfer devices are key equipment for achieving efficient and precise handling. These devices typically consist of two parts: a fixture body and a fixture drive mechanism. The fixture body (e.g., a suction head or gripper structure) is designed according to the shape of the workpiece to be transferred, fixing it in place through clamping, adsorption, or other methods. The fixture drive mechanism (e.g., an XYZ three-axis direct drive module or a six-axis robotic arm) is responsible for driving the workpiece to complete spatial displacement. Because different workpieces have varying shapes and sizes, the fixture body needs frequent replacement to adapt to production requirements, while the fixture drive mechanism is usually reusable, improving the equipment's economy and flexibility.

[0003] Currently, the connection between the fixture body and the fixture drive mechanism is generally achieved using bolts. Specifically, the fixture body is fastened to the mounting plate or interface of the fixture drive mechanism via locking bolts. Replacement requires manually loosening the bolts, disassembling the old fixture, installing the new fixture, and then re-locking. Although this method is simple in structure, low in cost, and provides a stable connection, its operation is cumbersome and time-consuming, especially in flexible production scenarios requiring frequent fixture changes, severely hindering production efficiency. Furthermore, bolt tightening relies on manual operation, which may lead to uneven tightening torque, resulting in decreased positioning accuracy and even the risk of fixture loosening or shifting.

[0004] To overcome the above-mentioned shortcomings, the industry urgently needs a fast, reliable, and tool-free fixture replacement solution to reduce downtime and improve the responsiveness and adaptability of automated production lines.

[0005] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] One objective of this invention is to provide a quick-release fixture structure that can effectively solve the problem of low replacement efficiency caused by fixing the fixture body with bolts in existing workpiece transfer devices.

[0007] To achieve the above objectives, this utility model provides a quick-release fixture structure, comprising:

[0008] A fixture positioning plate, wherein the bottom surface of the fixture positioning plate is provided with a downwardly protruding guide boss;

[0009] A lifting drive mechanism is mounted on the fixture positioning plate, and the drive end of the lifting drive mechanism protrudes below the fixture positioning plate.

[0010] A fixture body for fixing a workpiece, the fixture body being located below the fixture positioning plate, and the top surface of the fixture body being provided with a lifting groove and a guide groove;

[0011] in,

[0012] The side of the lifting groove is an open structure, so that the driving end of the lifting drive mechanism can enter and exit the lifting groove horizontally;

[0013] The opening of the guide groove faces the guide boss, so that after being driven by the lifting drive mechanism, it cooperates upward with the guide boss to achieve horizontal alignment of the fixture positioning plate and the fixture body.

[0014] Optionally, the lifting groove includes an upper groove section extending downward from the top surface of the fixture body, and a lower groove section located below the upper groove section and having a groove width greater than that of the upper groove section;

[0015] The upper groove section and the lower groove section together form an inverted T-shaped structure.

[0016] Optionally, the lifting drive mechanism includes:

[0017] A lifting plate, wherein the diameter of the lifting plate is between the width of the upper groove section and the width of the lower groove section;

[0018] A lifting power unit is installed and fixed on the fixture positioning plate, and the lifting power unit is connected to the top of the lifting plate to drive the lifting plate to move up and down.

[0019] Optionally, the top surface of the end of the lower groove section away from the side opening of the lifting groove is provided with an upwardly recessed secondary positioning groove for the top of the lifting plate to be engaged.

[0020] Optionally, the lifting power unit includes:

[0021] A guide rod connecting plate, which is located above the fixture positioning plate;

[0022] A vertical guide rod, the upper end of which is fixed to the guide rod connecting plate, and the lower end which passes downward through the fixture positioning plate and connects to the top of the lifting plate;

[0023] A linear drive mechanism is mounted on the fixture positioning plate, and the drive end of the linear drive mechanism is connected upward to the bottom surface of the guide rod connecting plate.

[0024] Optionally, the fixture positioning plate is provided with a linear bearing through which the vertical guide rod slides.

[0025] Optionally, the guide boss is a frustum structure that gradually decreases in size from top to bottom.

[0026] Optionally, a pressure sensor is provided on the bottom surface of the fixture positioning plate.

[0027] Optionally, a contact sensor protruding to the bottom surface of the fixture positioning plate is installed on the fixture positioning plate.

[0028] The beneficial effects of this utility model are as follows: It provides a quick-release fixture structure, and the working process is as follows:

[0029] (1) Initial state:

[0030] The fixture body is separated from the fixture positioning plate, and the drive end of the lifting drive mechanism (such as a cylinder or electric push rod) is in the extended state.

[0031] (2) Quick installation:

[0032] Horizontal insertion: The fixture drive mechanism moves the fixture positioning plate, so that the drive end of the lifting drive mechanism enters the lifting groove through the side opening of the lifting groove;

[0033] Vertical locking: The lifting drive mechanism retracts, and the drive end lifts the top wall of the lifting groove, causing the entire fixture body to move upward. At this time, the guide groove and the guide boss of the fixture positioning plate gradually engage, and the horizontal position deviation is automatically corrected by the cooperation of the inclined surface or conical surface to achieve precise alignment.

[0034] Fixing complete: After the drive end rises to the highest point, the fixture body and the fixture positioning plate form a rigid connection through the tight fit of the guide boss and guide groove, without the need for additional bolts to lock.

[0035] (3) Quick disassembly:

[0036] The drive mechanism retracts, the drive end moves downward, and the fixture body moves downward, causing the guide groove to simultaneously disengage from the guide boss.

[0037] The jig drive mechanism moves the jig positioning plate horizontally, causing the drive end of the lifting drive mechanism to exit the lifting groove from the side opening of the lifting groove, thus completing the separation operation of the jig positioning plate and the jig body.

[0038] In the above process, the assembly and disassembly of the fixture body does not require turning the bolts. Only the fixture positioning plate needs to be moved horizontally, which is conducive to realizing mechanized fixture assembly and disassembly operations, thereby improving fixture replacement efficiency.

[0039] Therefore, the quick-release fixture structure provided by this utility model can effectively solve the problem of low replacement efficiency caused by fixing the fixture body by bolts in the existing workpiece transfer device. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A schematic diagram of the quick-release structure of the fixture connected to the fixture drive mechanism provided in the embodiment;

[0042] Figure 2 A schematic diagram of one side of the quick-release structure of the fixture provided in the embodiment (opening side of the lifting groove);

[0043] Figure 3 This is a schematic diagram of the other side of the quick-release fixture structure provided in the embodiment.

[0044] In the picture:

[0045] 100. Fixture drive mechanism;

[0046] 1. Fixture positioning plate; 101. Guide boss;

[0047] 2. Lifting drive mechanism; 201. Lifting plate; 202. Lifting power unit; 2021. Guide rod connecting plate; 2022. Vertical guide rod; 2023. Linear drive mechanism; 2024. Linear bearing;

[0048] 3. Fixture body; 301. Lifting groove; 3011. Upper groove section; 3012. Lower groove section; 302. Secondary positioning groove; 303. Guide groove;

[0049] 4. Contact sensor. Detailed Implementation

[0050] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0051] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0052] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0053] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0054] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0055] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0056] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0057] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0058] The direct drive mechanism in this invention can be a linear motor, a cylinder, a hydraulic cylinder, or a motor lead screw and slider assembly, etc.; the rotary drive mechanism can be a servo motor, a stepper motor, or a rotary cylinder, etc.

[0059] See Figures 1-3 This embodiment provides a quick-release fixture structure, including:

[0060] The fixture positioning plate 1 has a downwardly protruding guide boss 101 on its bottom surface;

[0061] A lifting drive mechanism 2 is mounted on the fixture positioning plate 1, and the driving end of the lifting drive mechanism 2 extends to the bottom of the fixture positioning plate 1.

[0062] The fixture body 3 (e.g., suction head or gripper structure) is used to fix the workpiece. The fixture body 3 is located below the fixture positioning plate 1, and the top surface of the fixture body 3 is provided with a lifting groove 301 and a guide groove 303.

[0063] in,

[0064] The side of the lifting groove 301 is an open structure so that the driving end of the lifting drive mechanism 2 can enter and exit the lifting groove 301 horizontally.

[0065] The opening of the guide groove 303 faces the guide boss 101, so that after being driven by the lifting drive mechanism 2, it cooperates upward with the guide boss 101 to achieve horizontal alignment of the fixture positioning plate 1 and the fixture body 3.

[0066] The quick-release fixture structure provided by this utility model works as follows:

[0067] (1) Initial state:

[0068] The fixture body 3 is separated from the fixture positioning plate 1 through the lifting groove 301 and guide groove 303 on its top surface, and the driving end of the lifting drive mechanism 2 (such as a cylinder or electric push rod) is in the extended state.

[0069] (2) Quick installation:

[0070] Horizontal insertion: The fixture drive mechanism 100 moves the fixture positioning plate 1, so that the drive end of the lifting drive mechanism 2 enters the lifting groove 301 through the side opening of the lifting groove 301;

[0071] Vertical locking: The lifting drive mechanism 2 drives the fixture body 3 to move upward, so that the guide groove 303 gradually engages with the guide boss 101 of the fixture positioning plate 1. The horizontal position deviation is automatically corrected by the cooperation of the inclined surface or the conical surface to achieve precise alignment.

[0072] Fixing complete: After the fixture body 3 is raised to the highest point, the fixture body 3 and the fixture positioning plate 1 form a rigid connection through the tight cooperation of the guide boss 101 and the guide groove 303, without the need for additional bolts to lock.

[0073] (3) Quick disassembly:

[0074] The lifting drive mechanism 2 drives the fixture body 3 to move downward, so that the guide groove 303 moves downward and disengages from the guide boss 101.

[0075] The jig drive mechanism 100 moves the jig positioning plate 1 horizontally, so that the drive end of the lifting drive mechanism 2 exits the lifting groove 301 from the side opening of the lifting groove 301, completing the separation operation of the jig positioning plate 1 and the jig body 3.

[0076] In the above process, the assembly and disassembly of the fixture body 3 does not require turning the bolts. Only the fixture positioning plate 1 needs to be moved horizontally, which is conducive to realizing mechanized fixture assembly and disassembly operations and thus improving fixture replacement efficiency.

[0077] Therefore, the quick-release fixture structure provided by this utility model can effectively solve the problem that the fixture body 3 in the existing workpiece transfer device is fixed by bolt locking, resulting in low replacement efficiency.

[0078] In this embodiment, the lifting groove 301 includes an upper groove section 3011 extending downward from the top surface of the fixture body 3, and a lower groove section 3012 located below the upper groove section 3011 and having a groove width greater than that of the upper groove section 3011; wherein the upper groove section 3011 and the lower groove section 3012 together form an inverted T-shaped structure.

[0079] Accordingly, the lifting drive mechanism 2 includes:

[0080] The lifting plate 201 has a diameter between the width of the upper groove section 3011 and the width of the lower groove section 3012.

[0081] The lifting power unit 202 is installed and fixed on the fixture positioning plate 1, and the lifting power unit 202 is connected to the top of the lifting plate 201 to drive the lifting plate 201 to move up and down.

[0082] Furthermore, the lifting power unit 202 includes:

[0083] Guide rod connecting plate 2021, which is located above the fixture positioning plate 1;

[0084] A vertical guide rod 2022, the upper end of which is fixed to the guide rod connecting plate 2021, and the lower end which passes downward through the fixture positioning plate 1 and connects to the top of the lifting plate 201;

[0085] A linear drive mechanism 2023 is mounted on the fixture positioning plate 1, and the drive end of the linear drive mechanism 2023 is connected upward to the bottom surface of the guide rod connecting plate 2021.

[0086] A linear bearing 2024 is fixed on the fixture positioning plate 1, allowing the vertical guide rod 2022 to slide up and down through it.

[0087] When the drive end of the linear drive mechanism 2023 extends upward, it drives the lifting plate 201 to move upward through the guide rod connecting plate 2021 and the vertical guide rod 2022; when the drive end of the linear drive mechanism 2023 retracts downward, it drives the lifting plate 201 to move downward through the guide rod connecting plate 2021 and the vertical guide rod 2022.

[0088] In this embodiment, the top surface of the lower groove section 3012 away from the side opening of the lifting groove 301 is provided with a secondary positioning groove 302 that is recessed upward and allows the top of the lifting plate 201 to be inserted.

[0089] When the fixture body 3 needs to be installed, after the fixture drive mechanism 100 drives the lifting plate 201 into the lower groove section 3012, the lifting power unit 202 does not need to immediately lift the lifting plate 201. Instead, it waits for the fixture drive mechanism 100 to continuously drive the lifting plate 201 to move backward until the lifting plate 201 is directly below the secondary positioning groove 302 (at this time, the guide groove 303 is also directly below the guide boss 101). Only then does the lifting drive mechanism 2 lift the lifting plate 201 upward, thereby driving the lifting plate 201 to be inserted into the secondary positioning groove 302. Finally, it drives the entire fixture body 3 to move upward until the entire guide boss 101 is inserted into the guide groove 303.

[0090] When the fixture body 3 needs to be disassembled, the lifting power unit 202 drives the lifting plate 201 to move downward, thereby causing the guide groove 303 to disengage from the guide boss 101 (but the lifting plate 201 can never disengage from the secondary positioning groove 302). After the entire guide boss 101 is completely disengaged from the guide groove 303, the fixture body 3 needs to be lifted upward by manual labor or other equipment such as a robot arm so that the lifting plate 201 can disengage from the secondary positioning groove 302 before the fixture body 3 can be successfully removed laterally.

[0091] In this embodiment, the guide boss 101 is a frustum structure that gradually decreases in size from top to bottom. Compared with a conical surface, the frustum structure can also restrict the relative rotation between the fixture body 3 and the fixture positioning plate 1.

[0092] Optionally, a pressure sensor is provided on the bottom surface of the fixture positioning plate 1. When the pressure sensor detects a pressure value greater than a threshold, it can be determined that the fixture positioning plate 1 and the fixture body 3 have been assembled in place, and the linear drive mechanism 2023 can be controlled to stop the lifting operation of the lifting plate 201.

[0093] Of course, in some other embodiments, a contact sensor 4 can also be used to detect the engagement between the fixture body 3 and the fixture positioning plate 1. Specifically, the contact sensor 4 is mounted on the fixture positioning plate 1 and protrudes to the bottom surface of the fixture positioning plate 1. When the fixture body 3 moves upward to abut against the contact sensor 4, the contact sensor 4 sends a signal, which indicates that the fixture positioning plate 1 and the fixture body 3 have been assembled in place, thereby controlling the linear drive mechanism 2023 to stop the lifting operation of the lifting plate 201.

[0094] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A quick-release fixture structure, characterized in that, include: The fixture positioning plate (1) has a downwardly protruding guide boss (101) on its bottom surface. A lifting drive mechanism (2) is mounted on the fixture positioning plate (1), and the driving end of the lifting drive mechanism (2) extends to the bottom of the fixture positioning plate (1). The fixture body (3) is used to fix the workpiece. The fixture body (3) is located below the fixture positioning plate (1), and the top surface of the fixture body (3) is provided with a lifting groove (301) and a guide groove (303). in, The side of the lifting groove (301) is an open structure so that the driving end of the lifting drive mechanism (2) can enter and exit the lifting groove (301) horizontally. The opening of the guide groove (303) faces the guide boss (101) so that after being driven by the lifting drive mechanism (2), it cooperates upward with the guide boss (101) to achieve horizontal alignment of the fixture positioning plate (1) and the fixture body (3).

2. The quick-release fixture structure according to claim 1, characterized in that, The lifting groove (301) includes an upper groove section (3011) extending downward from the top surface of the fixture body (3) and a lower groove section (3012) located below the upper groove section (3011) and having a groove width greater than that of the upper groove section (3011). The upper groove section (3011) and the lower groove section (3012) together form an inverted T-shaped structure.

3. The quick-release fixture structure according to claim 2, characterized in that, The lifting drive mechanism (2) includes: The lifting plate (201) has a diameter between the width of the upper groove section (3011) and the width of the lower groove section (3012). A lifting power unit (202) is installed and fixed on the fixture positioning plate (1), and the lifting power unit (202) is connected to the top of the lifting plate (201) to drive the lifting plate (201) to move up and down.

4. The quick-release fixture structure according to claim 3, characterized in that, The top surface of the lower groove section (3012) away from the side opening of the lifting groove (301) is provided with a secondary positioning groove (302) that is recessed upward and allows the top of the lifting plate (201) to be inserted.

5. The quick-release fixture structure according to claim 3, characterized in that, The lifting power unit (202) includes: Guide rod connecting plate (2021), the guide rod connecting plate (2021) is located above the fixture positioning plate (1); A vertical guide rod (2022) has its upper end fixed to the guide rod connecting plate (2021) and its lower end passing downward through the fixture positioning plate (1) and connecting to the top of the lifting plate (201); A linear drive mechanism (2023) is mounted on the fixture positioning plate (1), and the drive end of the linear drive mechanism (2023) is connected upward to the bottom surface of the guide rod connecting plate (2021).

6. The quick-release fixture structure according to claim 5, characterized in that, The fixture positioning plate (1) is provided with a linear bearing (2024) through which the vertical guide rod (2022) slides.

7. The quick-release fixture structure according to claim 1, characterized in that, The guide boss (101) is a frustum structure that gradually decreases in size from top to bottom.

8. The quick-release fixture structure according to claim 1, characterized in that, A pressure sensor is provided on the bottom surface of the fixture positioning plate (1).

9. The quick-release fixture structure according to claim 1, characterized in that, A contact sensor (4) is installed on the fixture positioning plate (1) and protrudes to the bottom surface of the fixture positioning plate (1).

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