Rotary positioning device

Abstract

This utility model relates to the field of marking equipment technology and discloses a rotary positioning device, including a frame, a clamp, a top-pressure rotary assembly, and a vision camera. The clamp includes a first positioning seat, a second positioning seat, and a base plate. The base plate is detachably connected to the frame. The first positioning seat is provided with a first positioning sleeve, and the second positioning seat is provided with a second positioning sleeve. The cylindrical product is clamped and fixed between the first positioning sleeve and the second positioning sleeve. The top-pressure rotary assembly includes a top-pressure rotary drive, a drive motor, and an output shaft. The output shaft can rotate under the drive of the drive motor. The drive motor and the output shaft move along the axial direction of the second positioning sleeve under the drive of the top-pressure rotary drive. The vision camera is connected to the frame and is suitable for detecting marks on the surface of the cylindrical product. The vision camera is electrically connected to the top-pressure rotary drive and the drive motor. When the top-pressure rotary assembly drives the cylindrical product on the first clamp to rotate, the operator can load cylindrical products onto other clamps, improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of marking equipment technology, and in particular to a rotary positioning device. Background Technology

[0002] When producing cylindrical products (e-cigarettes, rollers, etc.), it is necessary to mark the surface of the cylindrical products. Usually, the workers manually load the cylindrical products into the fixture and visually adjust the marking position, which results in poor consistency of the marking position and low marking efficiency.

[0003] To address the above issues, existing technologies propose a solution that uses a servo motor to drive the cylindrical product to rotate and adjusts the marking position based on the detection results of a vision camera. However, in this solution, the loading of the fixture and the rotation of the cylindrical product driven by the servo motor need to be performed in separate steps, resulting in low production efficiency. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a rotary positioning device that, through a separately configured top-pressure rotating component and a clamp, enables the feeding of the product onto the clamp and the rotation of the cylindrical product driven by the top-pressure rotating component to proceed synchronously, thereby improving production efficiency.

[0005] This utility model embodiment provides a rotary positioning device for rotary positioning of cylindrical products, including:

[0006] Frame;

[0007] The clamp includes a first positioning seat, a second positioning seat, and a base plate. The base plate is detachably connected to the frame. The first positioning seat and the second positioning seat are connected to the base plate. The first positioning seat includes a first positioning base and a first positioning sleeve rotatably connected to the first positioning base. The second positioning seat includes a second positioning base and a second positioning sleeve rotatably connected to the second positioning base. The first positioning sleeve and the second positioning sleeve are coaxially arranged. The columnar product is clamped and fixed between the first positioning sleeve and the second positioning sleeve.

[0008] The top-pressure rotation assembly includes a top-pressure rotation drive, a drive motor, and an output shaft. The output shaft is rotatable under the drive of the drive motor. The drive motor and the output shaft move along the axial direction of the second positioning sleeve under the drive of the top-pressure rotation drive. The top-pressure rotation assembly is adapted to switch between a separated state and a coupled state. The separated state is the state in which the output shaft is separated from the second positioning sleeve, and the coupled state is the state in which the output shaft is dynamically coupled to the second positioning sleeve.

[0009] A vision camera is connected to the frame and is adapted to detect markings on the surface of the columnar product. The vision camera is electrically connected to the top-pressure rotation drive and the drive motor.

[0010] According to some embodiments of the present invention, the first positioning seat further includes a first elastic element, the first positioning sleeve is slidably connected to the first positioning base along its axial direction, and the first elastic element is disposed between the first positioning base and the first positioning sleeve.

[0011] According to some embodiments of the present invention, the fixture further includes a pre-positioning bracket, which is connected to the substrate and disposed between the first positioning seat and the second positioning seat, and the pre-positioning bracket has an arc-shaped positioning surface that matches the surface of the columnar product.

[0012] According to some embodiments of the present invention, the clamp further includes a linear screw module, the first positioning seat is connected to the base plate through the linear screw module, and the first positioning seat can move along the axial direction of the first positioning sleeve under the drive of the linear screw module to adjust the distance between the first positioning seat and the second positioning seat.

[0013] According to some embodiments of the present invention, the clamp further includes a limiting component, which is connected to the substrate and disposed on one side of the second positioning sleeve. The limiting component includes an abutment and a second elastic member. The abutment can abut against the second positioning sleeve under the drive of the second elastic member to limit the rotation of the second positioning sleeve.

[0014] According to some embodiments of the present invention, the rotary positioning device further includes a lifting assembly, the clamp is connected to the movable end of the lifting assembly, and the clamp can switch between a loading / unloading station and a rotary station under the drive of the lifting assembly; the loading / unloading station is a station where the clamp is located below the top-pressure rotary assembly, and the lifting assembly can connect to a loading conveyor mechanism and a unloading conveyor mechanism on both sides; the rotary station is a station where the second positioning sleeve of the clamp is coaxially arranged with the drive motor of the top-pressure rotary assembly.

[0015] The top-pressure rotation assembly further includes a pressure plate, which is connected to the movable end of the top-pressure rotation drive member and is adapted to press against the limiting assembly to disengage the abutment from the second positioning sleeve.

[0016] According to some embodiments of the present invention, the second positioning sleeve is provided with a first face gear at one end facing the drive motor, and the output shaft includes a second face gear, which can mesh with the first face gear.

[0017] According to some embodiments of the present invention, the output shaft further includes a cylindrical shaft and a third elastic element, the second face gear is slidably connected to the cylindrical shaft along the axial direction of the cylindrical shaft, and the third elastic element is disposed between the second face gear and the cylindrical shaft.

[0018] According to some embodiments of the present invention, the cylindrical shaft and the second face gear are connected by a limiting part, the limiting part including a limiting pin and a limiting groove that are inserted into each other, and the limiting groove extending along the sliding direction of the second face gear.

[0019] According to some embodiments of the present invention, the rotary positioning device further includes a barcode scanning component, which is connected to the frame and is adapted to detect the marking code on the surface of the columnar product. The barcode scanning component is electrically connected to the top-pressure rotary drive and the drive motor.

[0020] The present invention has at least the following beneficial effects: by recognizing the mark by a vision camera and dynamically adjusting the position of the columnar product in conjunction with the drive motor, the marking position of each columnar product after rotation is consistent, thereby improving the yield of columnar products; and thanks to the detachable connection of the fixture and the separate arrangement of the output shaft and the second positioning sleeve, when the columnar product on the first fixture is rotated by the top pressure rotation component, the operator can load columnar products onto other fixtures, greatly improving production efficiency.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of the rotary positioning device according to an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0025] Figure 3 This is a partial cross-sectional view of the clamp of the rotary positioning device according to an embodiment of the present utility model;

[0026] Figure 4 This is a partial cross-sectional view of the top-pressure rotating component of the rotary positioning device according to an embodiment of the present invention.

[0027] Figure label:

[0028] 100. Frame;

[0029] 200, Fixture; 210, First positioning seat; 211, First positioning base; 212, First positioning sleeve; 2121, First cap; 2122, First rod; 213, First elastic element; 220, Second positioning seat; 221, Second positioning base; 222, Second positioning sleeve; 2221, Second cap; 2222, Second rod; 2223, First gear; 230, Base plate; 240, Pre-positioning bracket; 250, Linear lead screw module; 260, Limiting assembly; 261, Abutment; 262, Second elastic element;

[0030] 300, Top-pressure rotation assembly; 310, Top-pressure rotation drive component; 320, Drive motor; 330, Output shaft; 331, Second-face gear; 332, Cylindrical shaft; 333, Third elastic element; 334, Limiting part; 340, Pressure plate;

[0031] 400, Vision camera; 500, Lifting assembly; 600, Barcode scanning assembly. Detailed Implementation

[0032] The embodiments of this utility model 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 utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installation", "connection", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0036] Please refer to Figure 1 Paper Figure 4 As shown, this utility model embodiment provides a rotary positioning device for rotary positioning of cylindrical products, including a frame 100, a clamp 200, a top-pressure rotation assembly 300, and a vision camera 400. The clamp 200 includes a first positioning seat 210, a second positioning seat 220, and a base plate 230. The base plate 230 is detachably connected to the frame 100. The first positioning seat 210 and the second positioning seat 220 are connected to the base plate 230. The first positioning seat 210 includes a first positioning base 211 and a first positioning sleeve 212 rotatably connected to the first positioning base 211. The second positioning seat 220 includes a second positioning base 221 and a second positioning sleeve 222 rotatably connected to the second positioning base 221. The first positioning sleeve 212 and the second positioning sleeve 222 are coaxially arranged. The cylindrical product is clamped and fixed in the first positioning sleeve. Between 212 and the second positioning sleeve 222; the top-pressure rotation assembly 300 includes a top-pressure rotation drive 310, a drive motor 320 and an output shaft 330. The output shaft 330 can rotate under the drive of the drive motor 320. The drive motor 320 and the output shaft 330 move along the axial direction of the second positioning sleeve 222 under the drive of the top-pressure rotation drive 310. The top-pressure rotation assembly 300 is adapted to switch between a separated state and a coupled state. The separated state is the state in which the output shaft 330 is separated from the second positioning sleeve 222, and the coupled state is the state in which the output shaft 330 is dynamically coupled to the second positioning sleeve 222. The vision camera 400 is connected to the frame 100. The vision camera 400 is adapted to detect the markings on the surface of the columnar product. The vision camera 400 is electrically connected to the top-pressure rotation drive 310 and the drive motor 320.

[0037] According to the rotary positioning device of this utility model embodiment, the cylindrical product is fed between the first positioning sleeve 212 and the second positioning sleeve 222 of the fixture 200. The position of the mark on the surface of the cylindrical product is detected by the vision camera 400. The top-pressure rotary drive component 310 drives the output shaft 330 to move and is dynamically coupled to the second positioning sleeve 222. At this time, the top-pressure rotary component 300 switches from the separated state to the dynamic coupling state. The drive motor 320 drives the output shaft 330 to rotate the cylindrical product to adjust the position of the mark (the mark can be an image, text, identifier, etc. on the product surface) so that the marking position of the cylindrical product is unified (the marking position and the mark position on the product are relatively fixed, and adjusting the mark position corresponds to adjusting the marking position). The adjusted cylindrical product, together with the fixture 200, is transferred to the marking station for marking.

[0038] According to the rotary positioning device of this utility model embodiment, the visual camera 400 identifies the mark and dynamically adjusts the position of the columnar product in combination with the drive motor 320, ensuring that the marking position of each columnar product is uniform after rotation, thereby improving the yield of columnar products; and thanks to the detachable connection of the clamp 200 and the separate arrangement of the output shaft 330 and the second positioning sleeve 222, when the top pressure rotating component 300 drives the columnar product on the first clamp 200 to rotate, the operator can load columnar products onto other clamps 200, which greatly improves production efficiency.

[0039] In this embodiment, the top-pressure rotary drive component 310 is a cylinder, but it can also be a lead screw module, a linear slide module, etc.

[0040] In this embodiment, in order to improve the movement stability of the drive motor 320 and the output shaft 330, the top pressure rotation assembly 300 is also provided with a linear slide. The fixed end of the linear slide is fixed to the frame 100, and the movable end of the linear slide is connected to the mounting plate for mounting the drive motor 320 and the output shaft 330. The linear slide guides the movement of the drive motor 320 and the output shaft 330.

[0041] In this embodiment, the fixture 200 is provided with five first positioning seats 210 and two positioning seats 220, and each second positioning seat 220 is paired with an output shaft 330. Of course, the number of first positioning seats 210 and second positioning seats 220 can be adjusted according to actual needs, and the adaptation between the output shaft 330 and the second positioning seat 220 can also be in the form of one-to-many or many-to-many, such as one output shaft 330 and five second positioning sleeves 222 being dynamically coupled in sequence, or two output shafts 330 corresponding to four second positioning sleeves 222.

[0042] In this embodiment, the frame 100 can be constructed using aluminum profiles. An electrical control box with integrated equipment wiring harnesses can be installed on the frame 100. The frame 100 can also be equipped with several buttons for controlling the operation of the equipment.

[0043] In this embodiment, the marked image obtained by the vision camera 400 can be compared with a standard image to obtain the required rotation angle for the columnar product.

[0044] In some embodiments, combined with Figure 2 As shown, the first positioning base 210 also includes a first elastic element 213, and the first positioning sleeve 212 is slidably connected to the first positioning base 211 along its axial direction. The first elastic element 213 is disposed between the first positioning base 211 and the first positioning sleeve 212.

[0045] In this embodiment, when the cylindrical product is installed between the first positioning sleeve 212 and the second positioning sleeve 222, the first elastic element 213 is pressed against it, and the reaction force of the first elastic element 213 pushes against the first positioning sleeve 212, ensuring that the first positioning sleeve 212 and the second positioning sleeve 222 stably clamp the cylindrical product.

[0046] In this embodiment, the first positioning sleeve 212 includes a first cap 2121 and a first rod 2122. The first rod 2122 passes through the first positioning base 211, and the first cap 2121 is sleeved with the cylindrical product. Different diameter cylindrical products can be adapted by replacing the first cap 2121 of different specifications.

[0047] In this embodiment, the first elastic element 213 is a linear spring, but it can also be an elastic silicone pad, a torsion spring, etc.

[0048] In some embodiments, the fixture 200 further includes a prepositioning bracket 240, which is connected to the substrate 230 and disposed between the first positioning seat 210 and the second positioning seat 220. The prepositioning bracket 240 is provided with an arc-shaped positioning surface that matches the surface of the columnar product.

[0049] In this embodiment, the pre-positioning bracket 240 is used to assist in feeding, making it easier for workers to find the positions of the first positioning sleeve 212 and the second positioning sleeve 222 corresponding to the columnar product.

[0050] In this embodiment, the prepositioning bracket 240 may be magnetic to magnetically pull metal cylindrical products (such as electronic cigarettes) to improve the feeding efficiency of cylindrical products.

[0051] In this embodiment, when the first positioning sleeve 212 has a first cap 2121 and a first rod 2122, the contact surface between the first cap 2121 and the cylindrical product can be a tapered surface that gradually decreases in size from the outside to the inside, so as to guide the axis of the cylindrical product to coincide with the axis of the first positioning sleeve 212, thereby improving the rotation accuracy. Furthermore, during the process of the axis of the cylindrical product coinciding with the axis of the first positioning sleeve 212, the cylindrical product will move upward a certain distance and disengage from the prepositioning bracket 240 due to the guidance of the tapered surface, thereby avoiding friction between the cylindrical product and the prepositioning bracket 240 during rotation.

[0052] In some embodiments, combined with Figure 3 As shown, the fixture 200 also includes a linear screw module 250. The first positioning seat 210 is connected to the base plate 230 through the linear screw module 250. The first positioning seat 210 can move along the axial direction of the first positioning sleeve 212 under the drive of the linear screw module 250 to adjust the distance between the first positioning seat 210 and the second positioning seat 220.

[0053] In this embodiment, thanks to the self-locking of the linear lead screw module 250, the first positioning seat 210 is fixed after moving into place, ensuring the clamping effect of the first positioning sleeve 212 and the second positioning sleeve 222, and the distance between the first positioning seat 210 and the second positioning seat 220 can be adjusted to adapt to columnar products of different lengths.

[0054] In other embodiments, the movement of the first positioning seat 210 can also be achieved by a cylinder, a linear slide module, or the like.

[0055] In some embodiments, combined with Figure 3 As shown, the fixture 200 also includes a limiting component 260, which is connected to the base plate 230 and located on one side of the second positioning sleeve 222. The limiting component 260 includes an abutment 261 and a second elastic member 262. The abutment 261 can abut against the second positioning sleeve 222 under the drive of the second elastic member 262 to limit the rotation of the second positioning sleeve 222. This effectively prevents the columnar product from rotating during the transfer process of the fixture 200 when the output shaft 330 is not powered coupled to the second positioning sleeve 222, ensuring that the position of the columnar product when it starts to rotate is the same as the position when it is first installed in the first positioning sleeve 212, which facilitates the identification of the identification component (such as the vision camera 400 mentioned above or the barcode scanning component 600 mentioned below) in the rotation positioning device.

[0056] In this embodiment, the selection of the second elastic element 262 is analogous to that of the first elastic element 213.

[0057] In some embodiments, combined with Figure 1 and Figure 2 As shown, the rotary positioning device also includes a lifting assembly 500, and a clamp 200 connected to the movable end of the lifting assembly 500. The clamp 200 can switch between the loading / unloading station and the rotary station under the drive of the lifting assembly 500. The loading / unloading station is a station where the clamp 200 is located below the top-pressure rotary assembly 300, and the lifting assembly 500 can be connected to the loading conveyor mechanism (not shown in the figure) and the unloading conveyor mechanism (not shown in the figure) on both sides. The rotary station is a station where the second positioning sleeve 222 of the clamp 200 is coaxially arranged with the drive motor 320 of the top-pressure rotary assembly 300. The top-pressure rotary assembly 300 also includes a pressure plate 340, which is connected to the movable end of the top-pressure rotary drive component 310 and is adapted to press against the limiting component 260 to disengage the abutment 261 from the second positioning sleeve 222.

[0058] In this embodiment, Figure 2 The area within the dashed box indicates the loading and unloading stations. Figure 2The fixture 200 is located at a rotary station. The fixture 200, which holds the cylindrical product, moves along the Y direction shown in the figure to the loading / unloading station above the lifting assembly 500 via the loading conveyor mechanism. The lifting assembly 500 lifts the fixture 200 to the rotary station. At this time, the rising limiting assembly 260 abuts against the pressure plate 340, the second elastic element 262 is compressed, and the limiting assembly 260 releases the restriction on the second positioning sleeve 222. The vision camera 400 detects the position of the mark on the surface of the cylindrical product. The top-pressure rotary drive 310 drives the output shaft 330 to move and is dynamically coupled to the second positioning sleeve 222. The drive motor 320 drives the output shaft 330 to rotate the cylindrical product to adjust the position of the mark. After the adjustment is completed, the lifting assembly 500 moves the fixture 200 down to the loading / unloading station, and the fixture 200 is transferred to the unloading conveyor for output.

[0059] In this embodiment, the lifting component 500 is used to switch the workstation of the fixture 200, thereby achieving automated loading and unloading and improving production efficiency. By setting the pressure plate 340 to press against the limiting component 260, the rotation restriction on the second positioning sleeve 222 is released, ensuring that the output shaft 330 can drive the columnar product to rotate while avoiding the rotation of the columnar product during the transfer process.

[0060] In this embodiment, the loading and unloading stations are equipped with liftable stop components on both sides along the Y direction. After the clamp 200 is conveyed to the loading and unloading station by the loading conveyor mechanism along the Y direction, it is blocked by the raised stop components and cannot continue to move to the unloading conveyor mechanism. After the clamp 200 has finished rotating in the rotary station and falls into the loading and unloading station, the stop components descend, and the clamp 200 can continue to move from the loading and unloading station along the Y direction (by being pushed by the next clamp 200 conveyed by the loading conveyor mechanism or by being independently tossed by a toggle component) to the unloading conveyor mechanism.

[0061] In some embodiments, combined with Figure 3 and Figure 4 As shown, the second positioning sleeve 222 has a first face gear 2223 at one end facing the drive motor 320, and the output shaft 330 includes a second face gear 331, which can mesh with the first face gear 2223.

[0062] In this embodiment, the teeth of the face gear (first face gear 2223 or second face gear 331) are distributed on the end face, reducing the radial length of the output shaft 330 or the second positioning sleeve 222, which helps to save space; and when the two face gears mesh, contact occurs simultaneously on multiple teeth. This multi-point contact characteristic has a natural load-sharing potential, which helps to distribute the load, reduce the stress on a single tooth, and thus improve the load-bearing capacity and service life.

[0063] In some embodiments, combined with Figure 4As shown, the output shaft 330 also includes a cylindrical shaft 332 and a third elastic element 333. The second face gear 331 is slidably connected to the cylindrical shaft 332 along the axial direction of the cylindrical shaft 332, and the third elastic element 333 is disposed between the second face gear 331 and the cylindrical shaft 332.

[0064] In this embodiment, the extension and retraction of the third elastic element 333 enables the flexible contact between the second gear 331 and the first gear 2223 to prevent damage to the first gear 2223 or the second gear 331. Furthermore, the reaction force after the third elastic element 333 is compressed ensures that the second gear 331 and the first gear 2223 make full contact, thus ensuring stable power transmission.

[0065] In this embodiment, the third elastic element 333 can be compared to the first elastic element 213.

[0066] In some embodiments, combined with Figure 4 As shown, the cylinder shaft 332 and the second gear 331 are connected by a limiting part 334. The limiting part 334 includes a limiting pin and a limiting groove that are inserted into each other. The limiting groove extends along the sliding direction of the second gear 331.

[0067] In this embodiment, the relative rotation between the second face gear 331 and the cylinder shaft 332 is restricted by the limiting part 334, ensuring that the third elastic element 333 will not twist with the second face gear 331, thus effectively extending the service life of the third elastic element 333.

[0068] In this embodiment, the limiting groove is formed on the cylindrical shaft 332, and the limiting pin is provided on the side wall of the second gear 331; of course, the limiting groove can also be formed on the second gear 331, and the limiting pin can be provided on the cylindrical shaft 332.

[0069] In some embodiments, combined with Figure 1 and Figure 2 As shown, the rotary positioning device also includes a barcode scanning component 600, which is connected to the frame 100. The barcode scanning component 600 is suitable for detecting the marking code on the surface of the columnar product. The barcode scanning component 600 is electrically connected to the top pressure rotary drive component 310 and the drive motor 320.

[0070] In this embodiment, the barcode scanning component 600 is used to scan the marking code (such as QR code or barcode) on the cylindrical product to identify and record the information of the currently produced cylindrical product. Furthermore, the rotary positioning device can select whether to drive the top pressure rotary drive component 310 or the drive motor 320 to work based on the barcode scanning information from the barcode scanning component 600.

[0071] The following is the overall operation process of the rotary positioning device according to an embodiment of this utility model:

[0072] The operator places the cylindrical product to be positioned into the fixture 200, and then places the fixture 200 into the loading and unloading station via the feeding conveyor mechanism or manually places it into the loading and unloading station. After placement, the fixture 200 is lifted to the rotating station by the lifting component 500. At this time, the limiting component 260 releases the rotation restriction on the second positioning sleeve 222 under the action of the pressure plate 340. The barcode scanning component 600 identifies and records the marking code on the surface of the cylindrical product. The top-pressure rotation drive component 310 drives the output shaft 330 to move and power couple with the second positioning sleeve 222. The vision camera 4... The system identifies the markings and controls the drive motor 320 to drive the output shaft 330 to rotate the columnar product by a specific angle based on the identification results. After the rotation is completed, the top-pressing rotation drive component 310 drives the output shaft 330 to retract, and the lifting component 500 drives the clamp 200 to descend. The pressure plate 340 releases the pressure on the limiting component 260, and the limiting component 260 restricts the rotation of the second positioning sleeve 222 again. After the clamp 200 descends to the loading and unloading station, it is transported to the downstream station (such as the marking station) by the unloading conveyor mechanism. The above process is repeated to realize the automated positioning of the columnar product.

[0073] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A rotary positioning device for the rotary positioning of a cylindrical product, characterized in that include: Frame (100); The clamp (200) includes a first positioning seat (210), a second positioning seat (220), and a base plate (230). The base plate (230) is detachably connected to the frame (100). The first positioning seat (210) and the second positioning seat (220) are connected to the base plate (230). The first positioning seat (210) includes a first positioning base (211) and a first positioning sleeve (212) rotatably connected to the first positioning base (211). The second positioning seat (220) includes a second positioning base (221) and a second positioning sleeve (222) rotatably connected to the second positioning base (221). The first positioning sleeve (212) and the second positioning sleeve (222) are coaxially arranged. The columnar product is clamped and fixed between the first positioning sleeve (212) and the second positioning sleeve (222). The top-pressure rotation assembly (300) includes a top-pressure rotation drive (310), a drive motor (320), and an output shaft (330). The output shaft (330) is capable of rotating under the drive of the drive motor (320). The drive motor (320) and the output shaft (330) move along the axial direction of the second positioning sleeve (222) under the drive of the top-pressure rotation drive (310). The top-pressure rotation assembly (300) is adapted to switch between a separated state and a coupled state. The separated state is the state in which the output shaft (330) is separated from the second positioning sleeve (222), and the coupled state is the state in which the output shaft (330) is dynamically coupled to the second positioning sleeve (222). A vision camera (400) is connected to the frame (100), the vision camera (400) is adapted to detect markings on the surface of the columnar product, and the vision camera (400) is electrically connected to the top pressure rotation drive (310) and the drive motor (320).

2. The rotational positioning apparatus according to claim 1, wherein The first positioning seat (210) further includes a first elastic element (213), the first positioning sleeve (212) is slidably connected to the first positioning base (211) along its axial direction, and the first elastic element (213) is disposed between the first positioning base (211) and the first positioning sleeve (212).

3. The rotational positioning apparatus according to claim 1, wherein The fixture (200) further includes a pre-positioning bracket (240), which is connected to the substrate (230) and disposed between the first positioning seat (210) and the second positioning seat (220). The pre-positioning bracket (240) has an arc-shaped positioning surface that matches the surface of the columnar product.

4. A rotational positioning apparatus according to claim 3, wherein The fixture (200) further includes a linear screw module (250), and the first positioning seat (210) is connected to the base plate (230) through the linear screw module (250). The first positioning seat (210) can move along the axial direction of the first positioning sleeve (212) under the drive of the linear screw module (250) to adjust the distance between the first positioning seat (210) and the second positioning seat (220).

5. The rotational positioning apparatus according to any one of claims 1 to 4, characterized by The clamp (200) further includes a limiting component (260), which is connected to the base plate (230) and disposed on one side of the second positioning sleeve (222). The limiting component (260) includes an abutment (261) and a second elastic member (262). The abutment (261) can abut against the second positioning sleeve (222) under the drive of the second elastic member (262) to limit the rotation of the second positioning sleeve (222).

6. A rotational positioning apparatus according to claim 5, wherein The rotary positioning device also includes a lifting assembly (500), and the clamp (200) is connected to the movable end of the lifting assembly (500). The clamp (200) can switch between the loading / unloading station and the rotary station under the drive of the lifting assembly (500). The loading / unloading station is a station where the clamp (200) is located below the top-pressure rotary assembly (300), and the lifting assembly (500) can be connected to the loading conveyor and the unloading conveyor on both sides. The rotary station is a station where the second positioning sleeve (222) of the clamp (200) is coaxially arranged with the drive motor (320) of the top-pressure rotary assembly (300). The top-pressure rotation assembly (300) also includes a pressure plate (340), which is connected to the movable end of the top-pressure rotation drive (310) and is adapted to press against the limiting assembly (260) to disengage the abutment (261) from the second positioning sleeve (222).

7. The rotational positioning apparatus according to any one of claims 1 to 4, characterized by The second positioning sleeve (222) has a first face gear (2223) at one end facing the drive motor (320), and the output shaft (330) includes a second face gear (331), which can mesh with the first face gear (2223).

8. A rotational positioning apparatus according to claim 7, wherein The output shaft (330) further includes a cylindrical shaft (332) and a third elastic element (333). The second face gear (331) is slidably connected to the cylindrical shaft (332) along the axial direction of the cylindrical shaft (332). The third elastic element (333) is disposed between the second face gear (331) and the cylindrical shaft (332).

9. A rotational positioning apparatus according to claim 8, wherein, The cylindrical shaft (332) is connected to the second face gear (331) by a limiting part (334), the limiting part (334) including a limiting pin and a limiting groove that fit together, the limiting groove extending along the sliding direction of the second face gear (331).

10. The rotational positioning apparatus according to any one of claims 1 to 4, characterized by The rotary positioning device further includes a barcode scanning component (600), which is connected to the frame (100). The barcode scanning component (600) is adapted to detect the marking code on the surface of the columnar product. The barcode scanning component (600) is electrically connected to the top pressure rotary drive (310) and the drive motor (320).

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