Quick-change feeding gripper mechanism

Abstract

A quick-change feeding gripper mechanism comprises a first lead screw and a second lead screw which are coincident in axis, and further comprises a first gripper assembly and a second gripper assembly which are arranged on the first lead screw and the second lead screw in a sliding mode along the axis respectively. The first hand grabbing assembly comprises a first adjusting and quick disassembling unit and a first hand claw. The second gripper assembly comprises a second gripper, and a space for clamping a workpiece is reserved between the clamping section of the second gripper and the clamping section of the first gripper. Through reasonable arrangement of the component structure, one side of the quick-release block is inserted into the quick-release hole and is limited and locked with the lower part of the elastic locking unit, when the gripper needs to be replaced, the elastic locking unit is loosened, and in the process of pulling out the quick-release block, the quick-release block pushes the lower part of the elastic locking unit to move upwards until the quick-release block is completely pulled out, and then the elastic locking unit resets; and on the contrary, the whole process is simple, convenient and rapid to operate, and quick replacement of the gripper is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of gearbox tooling technology, specifically relating to a quick-change feeding gripper mechanism. Background Technology

[0002] As the country gradually transforms towards automation and intelligence, automotive parts manufacturing companies are using more and more automated equipment in their production processes. However, the increased level of automation has brought great challenges to product and model changes. This is the case with the production and processing of automotive transmission gear shafts, where changing clamping fixtures takes a very long time, making it difficult to improve production efficiency.

[0003] During the gearbox production process, the changeover of gear shaft (workpiece) loading and unloading requires replacing the entire gripper. Many parts are disassembled. The newly replaced gripper often has a deviation between the center of the gripper and the center position required after clamping due to improper installation process and wear after long-term use. This leads to incomplete loading, equipment collisions, or parts tipping over. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a quick-change feeding gripper mechanism to solve the technical problem of quick gripper change.

[0005] To achieve the above objectives, the technical solution adopted by this utility model includes:

[0006] A quick-change feeding gripper mechanism includes a first lead screw and a second lead rod with their axes coincident, and a first gripper assembly and a second gripper assembly respectively slidably mounted on the first lead screw and the second lead rod along their axes. The first gripper assembly includes a first adjustable quick-release unit, which includes a slider slidably mounted on the first lead screw along its axis. A cover plate is connected to the slider, and a cavity is left at the connection between the slider and the cover plate. A quick-release hole is also provided in the slider below the cavity. The lower part of the cavity communicates with the quick-release hole, and the axis of the quick-release hole is perpendicular to the axis of the first lead screw. An elastic locking unit is provided in the cavity. A quick-release block is inserted into the quick-release hole along its axis, and the lower part of the elastic locking unit makes limiting contact with one side of the quick-release block located in the quick-release hole. The first gripper assembly also includes a first gripper connected to the other side of the quick-release block. The second gripper assembly includes a second gripper, and a space for gripping the workpiece is left between the gripping section of the second gripper and the gripping section of the first gripper.

[0007] Preferably, the second gripper assembly further includes a second adjustment quick-release unit, which is mirror-symmetrical to the first adjustment quick-release unit along the workpiece axis.

[0008] Preferably, the elastic locking unit includes an adjusting shaft that passes through the cavity from above the cover plate, and a pressing plate, a spring, and a locking pin are arranged sequentially below the adjusting shaft; the portion of the quick-release block located in the quick-release hole includes a limiting sliding section that matches the circumferential structure of the quick-release hole, a limiting protrusion is provided on one side of the limiting sliding section, and a limiting groove is provided between the limiting sliding section and the limiting protrusion; the locking pin passes through the quick-release hole and makes limiting contact with the limiting groove.

[0009] Preferably, the inner wall of the quick-release hole is provided with a guide limiting groove parallel to its axis, and the side wall of the limiting sliding section is provided with a protrusion that matches the structure of the guide limiting groove.

[0010] Preferably, the limiting protrusion is a spherical structure.

[0011] Preferably, the slider is provided with a sliding adjustment hole that matches the structure of the first lead screw and is in mechanical contact with it.

[0012] Preferably, the sliding adjustment hole intersects with the quick-release hole, and the limiting protrusion never contacts the sliding adjustment hole.

[0013] Preferably, a floating claw is hinged to the upper part of the first gripper section.

[0014] Preferably, the first gripper and the floating gripper are hinged together by a hinge unit; the hinge unit includes a rotating pin that passes through the floating gripper and the first gripper sequentially from top to bottom, and a first limiting shaft that passes through the first gripper from bottom to top and is coaxially connected to the rotating pin.

[0015] Preferably, it further includes a floating limiting unit disposed between the first gripper and the floating gripper; the floating limiting unit includes a second limiting shaft that passes through the first gripper and the floating gripper sequentially from bottom to top, and an elastic ring is provided between the outer periphery of the top end of the second limiting shaft and the floating gripper.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] (1) The quick-change feeding gripper mechanism of this utility model, through the reasonable setting of the component structure, inserts one side of the quick-release block into the quick-release hole and locks it with the lower limit of the elastic locking unit. When the gripper needs to be replaced, the elastic locking unit is relaxed. During the process of pulling out the quick-release block, the quick-release block pushes the lower part of the elastic locking unit to move upward until the quick-release block is completely pulled out and the elastic locking unit is reset. Conversely, the gripper is installed. The whole process is simple and quick to operate, realizing quick gripper replacement.

[0018] (2) The quick-change feeding gripper mechanism of this utility model can achieve both guidance when installing / removing quick-release blocks and prevent quick-release blocks from rotating through the cooperation of guide limiting groove and protrusion, thereby realizing quick-release function.

[0019] (3) The quick-change feeding gripper mechanism of this utility model, by setting a floating gripper on the first gripper, ensures that the first gripper and the second gripper can maintain the clamping force on the workpiece while avoiding damage to the workpiece by the gripper. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a perspective view of the quick-change feeding gripper mechanism of this utility model;

[0022] Figure 2 for Figure 1 A 3D view of the first-hand component in the process;

[0023] Figure 3 for Figure 2 Structural diagram;

[0024] Figure 4 for Figure 2 A sectional view;

[0025] Figure 5 for Figure 1 A 3D view of the second-hand grasping component.

[0026] The labels in the diagram represent:

[0027] 0 Workpiece, 1 First lead screw, 2 First gripper assembly, 3 Second lead screw, 4 Second gripper assembly;

[0028] 2-1 Slider, 2-1a Sliding adjustment hole, 2-1b Quick release hole, 2-2 Cover plate, 2-3 Elastic locking unit, 2-4 Quick release block, 2-5 First gripper, 2-6 Floating gripper, 2-7 Hinge unit, 2-8 Floating limit unit;

[0029] 2-31 Adjusting shaft, 2-32 Pressure plate, 2-33 Spring, 2-34 Locking pin;

[0030] 2-41 Limiting protrusion, 2-42 Limiting groove, 2-43 Limiting sliding section, 2-44 Weight reduction cavity;

[0031] 2-71 First limiting shaft, 2-72 Rotating pin;

[0032] 2-81 Second limiting shaft, 2-82 Elastic ring;

[0033] 4-1 Second claw. Detailed Implementation

[0034] The utility model is not limited to the following specific embodiments. All equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0035] It should be noted that the directional terms mentioned in this document, such as "inner cavity," "inner circumference," "inner wall," and "outer side," are consistent with the specific directions on the paper in the accompanying drawings or the corresponding directions of the space shown in the drawings; all components and devices in this utility model, unless otherwise specified, adopt components and devices known in the prior art.

[0036] Example

[0037] This embodiment discloses a quick-change feeding gripper mechanism, including a first lead screw 1 and a second lead screw 3 with their axes coincident, and a first gripper assembly 2 and a second gripper assembly 4 respectively slidably mounted on the first lead screw 1 and the second lead screw 3 along their axes;

[0038] The first gripper assembly 2 includes a first adjusting quick-release unit, which includes a slider 2-1 slidably mounted on a first lead screw 1 along its axis. A cover plate 2-2 is connected to the slider 2-1. A cavity is left at the connection between the slider 2-1 and the cover plate 2-2. A quick-release hole 2-1b is also provided in the slider 2-1 below the cavity. The lower part of the cavity communicates with the quick-release hole 2-1b, and the axis of the quick-release hole 2-1b is perpendicular to the axis of the first lead screw 1. An elastic locking unit 2-3 is provided in the cavity. A quick-release block 2-4 is inserted into the quick-release hole 2-1b along its axis. The lower part of the elastic locking unit 2-3 is in limiting contact with one side of the quick-release block 2-4 located in the quick-release hole 2-1b.

[0039] The first gripper assembly 2 also includes a first gripper 2-5 connected to the other side of the quick-release block 2-4;

[0040] The second gripper assembly 4 includes a second gripper 4-1, and there is a space for gripping the workpiece 0 between the gripping section of the second gripper 4-1 and the gripping section of the first gripper 2-5;

[0041] Its function is as follows: During use, the first gripper assembly 2 and the second gripper assembly 4 move axially along the first lead screw 1 and the second lead screw 3 respectively to achieve the clamping of the first gripper 2-5 and the second gripper 4-1; under normal use, one side of the quick-release block 2-4 is inserted into the quick-release hole 2-1b and locked to the lower limit of the elastic locking unit 2-3. When the first gripper 2-5 needs to be replaced, the elastic locking unit 2-3 is released, that is, the downward pressure of the lower part of the elastic locking unit 2-3 decreases. During the process of pulling out the quick-release block 2-4, the quick-release block 2-4 pushes the lower part of the elastic locking unit 2-3 to move upward until the quick-release block 2-4 is completely pulled out and then the elastic locking is engaged. Unit 2-3 is reset; then, during the installation of the new first gripper 2-5, the elastic locking unit 2-3 remains relaxed. The quick-release block 2-4, which is paired with the new first gripper 2-5, is inserted. During insertion, the quick-release block 2-4 pushes the lower part of the elastic locking unit 2-3 upwards until it reaches the lower limit contact with the elastic locking unit 2-3. This tightens the elastic locking unit 2-3, applying downward pressure to its lower part. The quick-release block 2-4 is then locked in place with the elastic locking unit 2-3, completing the replacement of the first gripper 2-5. The entire process is simple and quick, enabling rapid gripper replacement.

[0042] The first gripper 2-5 disclosed in this embodiment has a floating gripper 2-6 hinged on its upper part. The first gripper 2-5 and the floating gripper 2-6 are hinged together by a hinge unit 2-7. The hinge unit 2-7 includes a rotating pin 2-72 that passes through the floating gripper 2-6 and the first gripper 2-5 from top to bottom, and a first limiting shaft 2-71 that passes through the first gripper 2-5 from bottom to top and is coaxially connected to the rotating pin 2-72. The first limiting shaft 2-71 can be a bolt. It also includes a floating limiting unit 2-8 disposed between the first gripper 2-5 and the floating gripper 2-6; the floating limiting unit 2-8 includes a second limiting shaft 2-81 that passes through the first gripper 2-5 and the floating gripper 2-6 sequentially from bottom to top. The second limiting shaft 2-81 can be a cylindrical pin. An elastic ring 2-82 is provided between the outer periphery of the top of the second limiting shaft 2-81 and the floating gripper 2-6. The elastic ring 2-82 can be a rubber ring. Due to the elastic characteristics of the rubber ring, the floating gripper 2-6 has a certain space for rotation, realizing the floating function, ensuring the clamping force on the workpiece while avoiding damage to the workpiece by the gripper.

[0043] Specifically, the elastic locking unit 2-3 includes an adjusting shaft 2-31 that passes through the cavity from above the cover plate 2-2. Below the adjusting shaft 2-31, a pressure plate 2-32, a spring 2-33, and a locking pin 2-34 are arranged coaxially in sequence. The quick-release block 2-4 located inside the quick-release hole 2-1b includes a limiting sliding section 2-43 that matches the circumferential structure of the quick-release hole 2-1b. A limiting protrusion 2-41 is provided on one side of the limiting sliding section 2-43, and a limiting groove 2-42 is provided between the limiting sliding section 2-43 and the limiting protrusion 2-41. The locking pin 2-34 passes through the quick-release hole 2-1b and makes limiting contact with the limiting groove 2-42.

[0044] Its function is as follows: the adjusting shaft 2-31 moves downward along its axis, pushing the clamping plate 2-32 and compressing the spring 2-33. The reaction force of the spring 2-33 pushes the locking pin 2-34 downward, so that the locking pin 2-34 and the limiting groove 2-42 are locked and fastened. Conversely, the spring 2-33 returns to its original position, the downward pressure of the locking pin 2-34 decreases / no longer has pressure, and while the quick release block 2-4 is pulled out / inserted, the limiting protrusion 2-41 pushes the locking pin 2-34 upward, so as to realize the disassembly of the quick release block 2-4 and realize the quick change of the gripper.

[0045] In this embodiment, the adjusting shaft 2-31 can be made with bolts.

[0046] Specifically, the inner wall of the quick-release hole 2-1b is provided with a guide limiting groove parallel to its axis, and the side wall of the limiting sliding section 2-43 is provided with a protrusion that matches the structure of the guide limiting groove.

[0047] Its function is to guide the quick-release block 2-4 during installation / removal by using the guide limit groove and the protrusion, and to prevent the quick-release block 2-4 from rotating, thereby achieving the quick-release function.

[0048] In this embodiment, the adjusting shaft 2-31 is threadedly connected to the cover plate 2-2. The direction of movement of the adjusting shaft 2-31 is achieved by rotating the adjusting shaft 2-31 in the forward / reverse direction. In this embodiment, the quick release block 2-4 is also provided with a weight reduction cavity 2-44 to reduce the overall weight. In this embodiment, the limiting protrusion 2-41 is a spherical structure to reduce the resistance when pulling out / inserting the quick release block 2-4.

[0049] The slider 2-1 disclosed in this embodiment is provided with a sliding adjustment hole 2-1a that is structurally matched and mechanically in contact with the first lead screw 1. The first lead screw 1 and the sliding adjustment hole 2-1a are threadedly connected. When it is necessary to clamp / loosen the workpiece 0, the rotational force can be converted into linear motion of the slider 2-1 along the axis of the first lead screw 1 by simply rotating the first lead screw 1 along the axis.

[0050] In this embodiment, the sliding adjustment hole 2-1a intersects with the quick-release hole 2-1b, and the limiting protrusion 2-41 never contacts the sliding adjustment hole 2-1a, so as to avoid the conflict between the limiting protrusion 2-41 and the first lead screw 1.

[0051] Specifically, the second gripper assembly 4 also includes a second adjustment quick-release unit, which is mirror-symmetrical to the first adjustment quick-release unit along the workpiece 0 axis; that is, the quick-release structure and operation process of the second gripper assembly 4 are the same as those of the first gripper assembly 2, and will not be described again here.

[0052] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0053] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately. Furthermore, the various different embodiments disclosed in this solution can also be combined arbitrarily, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content of this disclosure.

Claims

1. A quick-change feeding gripper mechanism, characterized in that, It includes a first lead screw (1) and a second lead screw (3) with their axes coincident, and also includes a first gripping assembly (2) and a second gripping assembly (4) that are respectively slidably mounted on the first lead screw (1) and the second lead screw (3) along their axes; The first gripper assembly (2) includes a first adjustment quick-release unit, which includes a slider (2-1) slidably mounted on a first lead screw (1) along its axis. A cover plate (2-2) is connected to the slider (2-1). A cavity is left at the connection between the slider (2-1) and the cover plate (2-2). A quick-release hole (2-1b) is also provided in the slider (2-1) below the cavity. The lower part of the cavity communicates with the quick-release hole (2-1b), and the axis of the quick-release hole (2-1b) is perpendicular to the axis of the first lead screw (1). An elastic locking unit (2-3) is provided in the cavity. A quick-release block (2-4) is inserted into the quick-release hole (2-1b) along its axis. The lower part of the elastic locking unit (2-3) is in limiting contact with the side of the quick-release block (2-4) located in the quick-release hole (2-1b). The first gripper assembly (2) also includes a first claw (2-5) connected to the other side of the quick-release block (2-4); The second gripper assembly (4) includes a second gripper (4-1), and there is a space for gripping the workpiece (0) between the gripping section of the second gripper (4-1) and the gripping section of the first gripper (2-5).

2. The quick-change feeding gripper mechanism as described in claim 1, characterized in that, The second gripper assembly (4) also includes a second adjustment quick-release unit, which is mirror-symmetrical to the first adjustment quick-release unit along the axis of the workpiece (0).

3. The quick-change feeding gripper mechanism as described in claim 2, characterized in that, The elastic locking unit (2-3) includes an adjusting shaft (2-31) that passes through the cavity from above the cover plate (2-2), and a pressing plate (2-32), a spring (2-33), and a locking pin (2-34) are arranged in sequence below the adjusting shaft (2-31); The quick-release block (2-4) located inside the quick-release hole (2-1b) includes a limiting sliding section (2-43) that matches the circumferential structure of the quick-release hole (2-1b). A limiting protrusion (2-41) is provided on one side of the limiting sliding section (2-43), and a limiting groove (2-42) is provided between the limiting sliding section (2-43) and the limiting protrusion (2-41). The locking pin (2-34) is inserted into the quick-release hole (2-1b) and makes contact with the limiting groove (2-42).

4. The quick-change feeding gripper mechanism as described in claim 3, characterized in that, The quick-release hole (2-1b) has a guide limiting groove on its inner wall that is parallel to its axis, and the limiting sliding section (2-43) has a protrusion on its side wall that matches the structure of the guide limiting groove.

5. The quick-change feeding gripper mechanism as described in claim 4, characterized in that, The limiting protrusion (2-41) is a spherical structure.

6. The quick-change feeding gripper mechanism as described in claim 5, characterized in that, The slider (2-1) is provided with a sliding adjustment hole (2-1a) that matches the structure of the first lead screw (1) and is in mechanical contact with it.

7. The quick-change feeding gripper mechanism as described in claim 6, characterized in that, The sliding adjustment hole (2-1a) intersects with the quick-release hole (2-1b), and the limiting protrusion (2-41) never contacts the sliding adjustment hole (2-1a).

8. The quick-change feeding gripper mechanism as described in any one of claims 1-7, characterized in that, A floating claw (2-6) is hinged to the upper part of the gripping section of the first gripper (2-5).

9. The quick-change feeding gripper mechanism as described in claim 8, characterized in that, The first gripper (2-5) and the floating gripper (2-6) are hinged together by a hinge unit (2-7); The hinge unit (2-7) includes a rotating pin (2-72) that passes through the floating claw (2-6) and the first claw (2-5) sequentially from top to bottom, and a first limiting shaft (2-71) that passes through the first claw (2-5) from bottom to top and is coaxially connected to the rotating pin (2-72).

10. The quick-change feeding gripper mechanism as described in claim 9, characterized in that, It also includes a floating limiting unit (2-8) disposed between the first gripper (2-5) and the floating gripper (2-6); the floating limiting unit (2-8) includes a second limiting shaft (2-81) that passes through the first gripper (2-5) and the floating gripper (2-6) sequentially from bottom to top, and an elastic ring (2-82) is provided between the outer periphery of the top end of the second limiting shaft (2-81) and the floating gripper (2-6).

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