Rotating disc type positioning clamp structure

Abstract

The utility model belongs to the technical field of automation, and particularly relates to a rotating disc type positioning clamp structure which comprises a rotating disc, a driving mechanism and a clamping mechanism. The clamping mechanism comprises a positioning seat and a limiting assembly; the positioning seat is arranged on the turntable; a positioning cavity is formed in the top side of the positioning seat; the limiting assembly comprises a mounting base, a first sliding block, a second sliding block and a limiting pressing plate. One end, close to the positioning seat, of the mounting seat extends to form a guide part, and the guide part is provided with a track groove; the first sliding block is slidably connected to the top side of the mounting base and provided with a mounting part, the second sliding block is connected with the mounting part, and the limiting pressing plate is arranged on the top side of the second sliding block and extends to the position above the positioning base; a roller extending into the track groove is arranged on one side of the second sliding block, and an extension spring is connected between the two connecting parts; a plurality of groups of lifting mechanisms are arranged on the bottom side of the turntable, and each lifting mechanism comprises a lifting part moving up and down; and a clearance groove is formed in the rotating disc and used for avoiding the contact between the lifting part and the bottom end of the second sliding block.

Description

Technical Field

[0001] This utility model belongs to the field of automation technology, and in particular relates to a rotary positioning fixture structure. Background Technology

[0002] A turntable mechanism is a mechanical device typically used to achieve rotary motion. It has wide applications in various equipment and systems, such as: Game consoles: Many game consoles use turntable mechanisms to determine game outcomes or rewards. Automated production lines: On production lines, turntables can be used to position, sort, or transport items. Photographic equipment: In some photographic equipment, turntables are used to adjust focus or select different shooting modes. Robotic arms: In robotics, turntable mechanisms are used to achieve flexible operation and movement.

[0003] A turntable mechanism typically includes a rotating platform, a drive system (such as a motor), and a control system to achieve precise rotation and positioning. The size, material, and drive method of the turntable may vary depending on the specific application requirements.

[0004] For example, Chinese utility model patent document CN220806114U discloses a rotary fixture clamping structure, including a rotary fixture clamping structure, multiple loading and assembly robots, and a frame. The rotary fixture clamping structure includes a rotary table, a first lifting member, a second lifting member, and multiple positioning fixtures. Multiple positioning fixtures with identical structures are evenly arranged around the periphery of a rotary table. Each positioning fixture includes a positioning seat, a support seat, positioning clamps, a return spring, a first support rod, and a second support rod. The positioning seat is located on the rotary table and has a positioning cavity. The support seat is located on one side of the positioning seat. Two positioning clamps are slidably or rotatably connected to the support seat. One end of each positioning clamp has a guide portion extending to the top of the positioning cavity, and the other end has a toggle portion. The upper end of the first support rod is connected to the support seat, and the lower end slides through the rotary table and is connected to the first lifting end. The upper end of the second support rod has an inclined push block located between the two toggle portions, and the lower end passes through the rotary table and is connected to the second lifting end. The return spring is connected to the positioning clamps and is used to pull the two positioning clamps together, so that the two guide portions form a guide assembly. When assembling the largest component into the positioning cavity of the positioning seat, or removing the assembled product from the positioning cavity, the first lifting member pushes the first support rod upward, causing the support seat and the positioning clamping block mounted on the support seat to move upward simultaneously. This creates a gap between the positioning clamping block and the support seat. Simultaneously, the second lifting member drives the second support rod upward, causing the inclined push block at the top of the second support rod to press against the actuating parts of the two positioning clamping blocks, causing the guide parts of the two positioning clamping blocks to move away from each other. Therefore, the largest workpiece can be assembled into the positioning cavity through the gap, or the assembled product can be removed from the positioning cavity. When assembling other smaller workpieces, the second lifting member simply drives the inclined push block to open the two positioning clamping blocks to assemble the workpiece into the positioning cavity. After opening, the workpiece is positioned and guided. Therefore, this rotary fixture opening and clamping structure reduces the opening of the two positioning clamping blocks to achieve workpiece assembly and removal, thereby reducing the length of the support block and increasing the stability of the two positioning sliders when open.

[0005] It is evident that the technical solution disclosed in the aforementioned patent documents utilizes two lifting mechanisms to push the positioning clamping block upward and open respectively. The structure is relatively complex, and the linkage between the first and second lifting mechanisms needs to be adjusted, which also brings inconvenience to the machine adjustment. Utility Model Content

[0006] The purpose of this utility model is to provide a turntable positioning clamp structure to solve the problem that the existing turntable mechanism requires two sets of lifting mechanisms to achieve clamping, which is complex and inconvenient to debug.

[0007] To achieve the above objectives, this utility model provides a rotary positioning fixture structure, including a rotary table, a driving mechanism connected to the rotary table, and clamping mechanisms evenly distributed on the rotary table. The clamping mechanism includes a positioning seat and limiting components disposed on both sides of the positioning seat. The positioning seat is disposed on the rotary table, with a positioning cavity on its top side and a negative pressure hole at the bottom of the positioning cavity, the negative pressure hole being connected to a negative pressure device. The limiting components include a mounting base, a first slider, a second slider, and a limiting pressure plate. The mounting base is disposed on the rotary table, with a guide portion extending from one end of the mounting base near the positioning seat. The guide portion has a track groove, and the upper end of the track groove... The first slider is slidably connected to the top side of the mounting base, and the end of the first slider near the positioning base has a downwardly extending mounting part. The second slider is slidably connected to the mounting part. The limiting pressure plate is located on the top side of the second slider and extends upward towards the positioning base. One side of the second slider has a roller that extends into the track groove, and the other side has a connecting part. A tension spring is connected between the connecting parts of the two sets of limiting components. The bottom side of the turntable has multiple sets of lifting mechanisms, and the lifting mechanism includes a lifting part that moves up and down. The turntable is provided with a clearance groove to prevent the lifting part from contacting the bottom end of the second slider.

[0008] Furthermore, the track groove includes an inclined section and a vertical section, with the vertical section located at the bottom end of the inclined section.

[0009] Furthermore, the bottom of the positioning cavity is provided with an upwardly protruding support ring, and the negative pressure hole is located inside the support ring.

[0010] Furthermore, the turntable is also provided with a support base, and the positioning seat is disposed on the support base. The support base is provided with a support portion extending out of the bottom of the positioning seat. The support portion is provided with a slide, and the top side of the slide is provided with a limiting member extending upward toward the positioning seat. A support spring is provided between the slide and the positioning seat, and the support spring is used to push the slide away from the positioning seat. The slide is provided with a downwardly extending extrusion part, and the lifting part is also provided with a pushing member for pushing the extrusion part.

[0011] Furthermore, the support base is provided with an air hole, which is connected to the negative pressure device; the bottom of the positioning base is provided with a negative pressure cavity, the negative pressure hole is connected to the negative pressure cavity, and the bottom of the negative pressure cavity covers the opening of the air hole.

[0012] Furthermore, the rotary positioning fixture structure also includes a photoelectric switch located on one side of the rotary table, and the top side of the positioning seat is also provided with a clearance groove, which is used to avoid the detection path of the photoelectric switch.

[0013] Furthermore, the rotation center of the turntable is also provided with a rotary joint, and multiple sets of control valves are arranged around the rotary joint on the turntable. The control valves are connected to the rotary joint and the negative pressure hole pipe.

[0014] Furthermore, a protective cover is provided on the top side of the turntable, which covers the rotary joint and the control valve.

[0015] Furthermore, the turntable has a central through hole, and the drive mechanism has a central through hole; the rotary joint includes a rotary seat, a bracket, and a central seat, with multiple connecting parts extending radially from the bottom end of the rotary seat, the connecting parts connecting to the turntable; the bottom end of the rotary seat has an installation cavity and an air pipe interface, and the upper end of the rotary seat has multiple pipe joints radially arranged, the pipe joints communicating with the air pipe interface; the bracket is located in the installation cavity, and the bracket has a clearance groove; the central seat connects to the bracket and extends into the central through hole; the bottom end of the central seat is connected to a conductive slip ring.

[0016] The rotary positioning fixture structure provided in this embodiment of the present invention has at least the following technical effects:

[0017] This rotary positioning fixture structure, when the clamping mechanism needs to be opened, the lifting part of the lifting mechanism moves upward, contacts the bottom of the second slider, and lifts the second slider upward; therefore, the limiting pressure plate moves upward, and the roller moves within the track groove. Since the upper and lower ends of the track groove are not on the same vertical line, the upper end of the track groove is away from the positioning seat, while the lower end is close to the positioning seat; therefore, when the roller moves from the lower end to the upper end of the track groove, it can push the first slider backward, thereby causing the second slider and the limiting pressure plate to move backward together, causing the limiting pressure plate to leave the positioning cavity, thus avoiding the upper end of the part. Therefore, the top of the part in the positioning cavity can be machined or assembled. Because a lifting mechanism is realized under the action of the track groove, the vertical and horizontal displacement of the limiting pressure plate can be completed, replacing the current use of two drive mechanisms to achieve vertical and horizontal displacement. The structure is simple, requires no complicated debugging, and is easy to operate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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.

[0019] Figure 1 This is a structural diagram of the rotary positioning fixture provided in an embodiment of the present utility model.

[0020] Figure 2 The diagram shows the structure of the rotary positioning fixture with a rotary joint provided in the embodiment of this utility model.

[0021] Figure 3 The structural diagram of the clamping mechanism of the rotary positioning fixture provided in the embodiment of this utility model.

[0022] Figure 4 This is a top view of the clamping mechanism of the rotary positioning fixture provided in an embodiment of the present utility model.

[0023] Figure 5 A cross-sectional view of the clamping mechanism of the rotary positioning fixture provided in this embodiment of the utility model.

[0024] Figure 6 This is a structural diagram of the mounting base portion of the rotary positioning fixture provided in an embodiment of the present utility model.

[0025] Figure 7 A cross-sectional view of the rotary positioning fixture provided in an embodiment of this utility model. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of the 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 intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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 utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] In one embodiment of the rotary positioning fixture structure of this utility model, please refer to... Figures 1 to 7This embodiment of the rotary positioning fixture structure is applied to automated equipment to realize the rotation cycle of the fixture. Specifically, the rotary positioning fixture structure includes a rotary table 100, a drive mechanism 200 connected to the rotary table, and clamping mechanisms 300 evenly distributed on the rotary table. The clamping mechanism 300 includes a positioning seat 310 and limiting components 320 disposed on both sides of the positioning seat. The positioning seat 310 is disposed on the rotary table 100, and a positioning cavity 311 is provided on the top side of the positioning seat 310. A negative pressure hole 312 is provided at the bottom of the positioning cavity 311, and the negative pressure hole 312 is connected to a negative pressure device (not shown in the figure). Specifically, the workpiece to be assembled or processed can be positioned in the positioning cavity 311, and the negative pressure device creates a negative pressure in the adsorption hole 312 to adsorb and fix the workpiece in the positioning cavity 311. The limiting components 320 include a mounting base 321, a first slider 322, a second slider 323, and a limiting pressure plate 324. Mounting base 321 is mounted on turntable 100. A guide portion 325 extends from one end of mounting base 321 near positioning base 310. The guide portion 325 has a track groove 326, the upper and lower ends of which are not on the same vertical line. Specifically, the upper end of the track groove 326 is further away from positioning base 310, while the lower end is closer to positioning base 310. A first slider 322 is slidably connected to the top side of mounting base 321. A downwardly extending mounting portion 327 is provided at one end of the first slider 322 near positioning base. A second slider 323 is slidably connected to the mounting portion 327. A limiting pressure plate 324 is located on the top side of the second slider 323 and extends upwards towards positioning base 310. One side of the second slider 323 has a roller 328 extending into the track groove 326, and the other side has a connecting portion 329. A tension spring 330 connects the connecting portions of the two sets of limiting components 320. The bottom side of the turntable 100 is provided with multiple lifting mechanisms 400, each including a lifting part 410 that moves up and down. The turntable 100 is provided with a clearance groove 101 for the clearance lifting part 410 to contact the bottom end of the second slider 323. Specifically, in this embodiment, when the part is positioned in the positioning cavity 311, the tension spring 330 pulls the two sets of limiting pressure plates 324 closer together, and under the action of the track groove 326, they can move downwards, thereby limiting the workpiece in the positioning cavity 311 to be positioned within the positioning cavity by the limiting pressure plates 324, preventing the workpiece from being misaligned when the turntable 100 rotates. Furthermore, in order to better fix the part in the positioning cavity 311, a negative pressure device can be used to create negative pressure in the negative pressure hole 312, adsorbing and fixing the part in the positioning cavity 311. When the clamping mechanism 300 needs to be opened, the lifting part 410 of the lifting mechanism 400 moves upward and contacts the bottom of the second slider 323, lifting the second slider 323 upward; therefore, the limiting pressure plate 324 moves upward, and the roller 328 moves in the track groove 326. Since the upper end and the lower end of the track groove 326 are not on the same vertical line, the upper end of the track groove 326 is far away from the positioning seat 310, while the lower end is close to the positioning seat 310.Therefore, when the roller 328 moves from the lower end to the upper end of the track groove 326, it can push the first slider 322 backward, thereby causing the second slider 322 and the limiting pressure plate 324 to move backward together. This causes the limiting pressure plate 324 to move away from the top side of the positioning cavity 311, thus avoiding the top of the part. Therefore, the top of the part in the positioning cavity 311 can be processed or assembled. Because a lifting mechanism 400 is realized under the action of the track groove 326, the vertical and horizontal displacement of the limiting pressure plate 324 can be completed, replacing the current method of using two drive mechanisms to achieve vertical and horizontal displacement. The structure is simple, does not require complicated debugging, and is easy to operate.

[0031] Furthermore, refer to Figure 6 The track groove 324 includes an inclined section and a vertical section, with the vertical section located at the bottom of the inclined section. Specifically, in this embodiment, when the roller 328 moves to the vertical section, the limiting plate 324 cannot move horizontally, but can move vertically as much as possible, to avoid problems such as the horizontal limiting structure of the limiting plate 324 pushing the parts out of place.

[0032] Furthermore, refer to Figures 3 to 5 The bottom of the positioning cavity 311 is also provided with an upwardly protruding support ring 313, and the negative pressure hole 312 is located inside the support ring 313. Specifically, in this embodiment, the support ring 313 supports the bottom of the part, which can increase the sealing performance of the negative pressure hole 312 on the part and increase the adsorption force.

[0033] Furthermore, refer to Figure 3 The turntable 100 also includes a support base 340, with a positioning seat 310 mounted on it. The support base 340 has a support portion extending beyond the bottom of the positioning seat 310, and the support portion includes a slide 350. A limiting member 351 extending upwards from the positioning seat 310 is provided on the top side of the slide 350. A support spring (not shown in the attached drawings) is provided between the slide 350 and the positioning seat 310, and the support spring is used to push the slide 350 away from the positioning seat 310. The slide 350 has a downwardly extending pushing portion 352, and the lifting portion 410 also includes a pushing member 420 for pushing the pushing portion 352. Specifically, the pushing member 420 and the pushing portion 352 can be in a beveled fit. In this embodiment, the lifting part 410 of the lifting mechanism 400 pushes the second slider 323 upward, causing the limiting pressure plate 324 to retract. Simultaneously, the pushing member 420 pushes the extruding part 352, causing the limiting member 351 to move above or to the side wall of the part. The limiting member 351 then misaligns and limits the other side of the part, preventing the part from becoming loose or misaligned during assembly or processing. Specifically, the limiting member 351 can also be equipped with detection probes or similar devices to perform tests on the part or conduct electrical tests.

[0034] Furthermore, the support base 340 is provided with an air hole 341, which is connected to the negative pressure device. The bottom of the positioning base 310 is provided with a negative pressure chamber 314, and the negative pressure hole 312 is connected to the negative pressure chamber 314. The bottom of the negative pressure chamber 314 covers the opening of the air hole 353.

[0035] For further details, please refer to... Figure 1 The rotary positioning fixture structure of this embodiment also includes a photoelectric switch 500, which is located on one side of the rotary table 100. The top side of the positioning base 310 is also provided with a clearance groove 315, which is used to avoid the detection path of the photoelectric switch 500. Therefore, the photoelectric switch 500 can be used to detect whether there is a workpiece in the positioning cavity 310.

[0036] Furthermore, refer to Figure 2 and Figure 7 The rotary joint 600 is located at the center of rotation of the turntable 100. Multiple control valves 700 are arranged around the rotary joint on the turntable 100. The control valves 700 are connected to the rotary joint 600 and the negative pressure port 312 pipe. When the turntable 100 rotates, the rotary joint 600 can be used to avoid the problem of air pipe entanglement.

[0037] Furthermore, refer to Figure 1 The top side of the turntable 100 is also provided with a protective cover 800, which covers the rotary joint 600 and the control valve 700.

[0038] Furthermore, refer to Figure 7 The turntable 100 has a central through hole, and the drive mechanism 200 also has a central through hole. The rotary joint 600 includes a rotary seat 610, a bracket 620, and a central seat 630. Multiple connecting portions 611 extend radially from the bottom end of the rotary seat 610, connecting to the turntable 100. The bottom end of the rotary seat 610 has a mounting cavity 612 and an air pipe interface 613. The upper end of the rotary seat 610 has multiple pipe connectors 614 radially arranged, communicating with the air pipe interface 613. The bracket 620 is located within the mounting cavity 612 and has a clearance groove. The central seat 630 connects to the bracket 620 and extends into the central through hole. A conductive slip ring is connected to the bottom end of the central seat 630. Specifically, in this embodiment, the air pipe connected to the air pipe interface 613 passes through the central seat and is rotatably connected to the air pipe interface 613. A wire connected to the air pipe interface 613 via the conductive slip ring passes through the clearance groove and connects to the control valve 700, etc.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary positioning clamp structure, comprising a rotary disk, a driving mechanism connected to the rotary disk, and clamping mechanisms evenly distributed on the rotary disk; characterized in that, The clamping mechanism includes a positioning seat and limiting components disposed on both sides of the positioning seat; the positioning seat is disposed on the turntable, the top side of the positioning seat has a positioning cavity, the bottom of the positioning cavity has a negative pressure hole, and the negative pressure hole is connected to a negative pressure device; the limiting components include a mounting seat, a first slider, a second slider, and a limiting pressure plate; the mounting seat is disposed on the turntable, and a guide portion extends from one end of the mounting seat near the positioning seat, the guide portion has a track groove, the upper end and the lower end of the track groove are not on the same vertical line; the first slider is slidably connected to the top side of the mounting seat, the... The first slider has a downwardly extending mounting portion at one end near the positioning seat, and the second slider is slidably connected to the mounting portion. The limiting pressure plate is located on the top side of the second slider and extends upward toward the positioning seat. One side of the second slider has a roller that extends into the track groove, and the other side has a connecting portion. A tension spring is connected between the connecting portions of the two sets of limiting components. The bottom side of the turntable has multiple sets of lifting mechanisms, each lifting mechanism including a lifting portion that moves up and down. The turntable is provided with a clearance groove to prevent the lifting portion from contacting the bottom end of the second slider.

2. The rotary positioning fixture structure according to claim 1, characterized in that: The track groove includes an inclined section and a vertical section, with the vertical section located at the bottom end of the inclined section.

3. The rotary positioning fixture structure according to claim 1, characterized in that: The bottom of the positioning cavity is also provided with an upwardly protruding support ring, and the negative pressure hole is located inside the support ring.

4. The rotary positioning fixture structure according to any one of claims 1 to 3, characterized in that: The turntable is also provided with a support base, and the positioning seat is disposed on the support base. The support base is provided with a support portion extending out of the bottom of the positioning seat. The support portion is provided with a slide block. The top side of the slide block is provided with a limiting member extending upward toward the positioning seat. A support spring is provided between the slide block and the positioning seat. The support spring is used to push the slide block away from the positioning seat. The slide block is provided with a downwardly extending extrusion part. The lifting part is also provided with a pushing member for pushing the extrusion part.

5. The rotary positioning fixture structure according to claim 4, characterized in that: The support base is provided with an air hole, which is connected to the negative pressure device; the bottom of the positioning base is provided with a negative pressure cavity, the negative pressure hole is connected to the negative pressure cavity, and the bottom of the negative pressure cavity covers the opening of the air hole.

6. The rotary positioning fixture structure according to claim 1, characterized in that: It also includes a photoelectric switch, which is located on one side of the turntable. The top side of the positioning seat is also provided with a clearance groove, which is used to avoid the detection path of the photoelectric switch.

7. The rotary positioning fixture structure according to claim 1, characterized in that: The rotating center of the turntable is also provided with a rotary joint, and multiple sets of control valves are arranged around the rotary joint on the turntable. The control valves are connected to the rotary joint and the negative pressure hole pipe.

8. The rotary positioning fixture structure according to claim 7, characterized in that: The top side of the turntable is also provided with a protective cover, which covers the rotary joint and the control valve.

9. The rotary positioning fixture structure according to claim 7, characterized in that: The turntable has a central through hole, and the drive mechanism has a central through hole. The rotary joint includes a rotary seat, a bracket, and a central seat. The bottom end of the rotary seat has multiple connecting parts extending radially, and the connecting parts are connected to the turntable. The bottom end of the rotary seat has a mounting cavity and an air pipe interface. The upper end of the rotary seat has multiple pipe joints extending radially, and the pipe joints are connected to the air pipe interface. The bracket is located in the mounting cavity and has a clearance groove. The central seat is connected to the bracket and extends into the central through hole. The bottom end of the central seat is connected to a conductive slip ring.

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