Rotary positioning mechanism

Abstract

The utility model relates to the field of chip production, in particular to a rotary positioning mechanism which comprises a bottom plate, a rotary table is arranged on the bottom plate, and a limiting block is arranged on the rotary table. A guide block is fixed on the turntable, a pull rod and a clamping block slide on the guide block and are fixedly connected, and the other end of the pull rod extends out of the guide block; a guide groove is formed in the outer periphery of one end of the guide block; a locking block is fixedly arranged at the end, away from the clamping block, of the pull rod. A locking hook is hinged to the side wall face, close to the locking block, of the guiding block, a shifting rod is fixed to the other end of the locking hook, a clamping groove is formed in the clamping block, and the clamping groove is provided with a locking position and a loosening position. A guide rail is fixed on the turntable, and a moving block slides on the guide rail and is fixedly connected with the other end of the clamping block; a cylinder is fixedly arranged at the bottom of the bottom plate and is used for enabling the rotating disc to be separated from the limiting block or abut against the limiting block when the moving block is impacted, and through the technical scheme, the automatic positioning device has the advantages that automatic positioning is achieved, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a positioning mechanism, in particular to a rotation positioning mechanism. Background Art

[0002] With the upgrade of semiconductor packaging technology, the equipment is no longer limited to mounting chips on lead frames. When mounting other electronic components on the lead frame, the carrier containing the components needs to be placed on the wafer platform before the equipment mounts the chip.

[0003] In the prior art, when mounting chips, the position of the carrier needs to be manually adjusted, and automatic positioning cannot be achieved. In addition, after each carrier is mounted, it needs to be manually replaced and fixed, resulting in low production efficiency. Utility Model Content

[0004] The utility model provides a rotary positioning mechanism, which solves the technical problems of the product being unable to automatically position and low production efficiency, and provides the following technical solutions:

[0005] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod of said wood-planer working table. The locking block is hingedly provided with a locking hook on the side wall surface of the locking block, and a lever is fixedly provided with a side of the locking hook near the card block at the other end, and a slot is provided on the card block corresponding to the lever, and the card slot has a locking position and a release position; a guide rail is fixedly provided on the bottom of the turntable, and a moving block is slidably provided on the guide rail, and one end of the moving block is fixedly connected to the other end of the card block; a cylinder is fixedly provided on the bottom of the base plate, and when the locking block and the limit block are relative to each other, the output shaft of the cylinder points to the rotating member; when the cylinder is used to hit the moving block, the card block moves, driving the lever to slide from the locking position to the release position or driving the lever to slide from the release position to the locking position, so that the locking block rotates 90° toward the limit block or back to the limit block, so that the turntable disengages from the limit block or presses against the limit block.

[0006] By adopting the above technical solution, through the setting of the turntable, the carrier can rotate 360° following the turntable during chip processing, thereby improving processing efficiency; through the setting of the guide groove and the card slot, the cylinder can be controlled to hit the moving block according to processing requirements, and then the position of the locking block can be adjusted to make the carrier in a fixed state or a free state. Therefore, after the carrier is placed on the turntable, the carrier can be automatically positioned and fixed, thereby improving production efficiency.

[0007] Furthermore, the card slot includes a first channel, a second channel and a locking channel, the first channel is arranged along the length direction of the pull rod, the left end of the first channel is the release position, the second channel is arranged at an angle, the bottom end of the second channel is connected to the left end of the first channel, and the second channel and the first channel are arranged at an acute angle; the locking channel includes a first sliding groove and a second sliding groove that are connected, the first sliding groove and the second sliding groove are arranged at an obtuse angle, the connection between the first sliding groove and the second sliding groove is the locking position, the other end of the first sliding groove is connected to the top end of the second channel, and the first sliding groove and the second channel are arranged at an acute angle, the other end of the second sliding groove is connected to the right end of the first channel, and the second sliding groove and the first channel are arranged at an acute angle.

[0008] By adopting the above technical solution, through the setting of the card slot, when the limit plate is in a fixed state, the cylinder hits the moving block, and the card block will first move slightly toward the locking block. Because one end of the locking hook is hinged, the lever on the locking hook will slide from the locking position to the first channel, and then the card block will drive the pull rod to move in the direction of the guide rail. During the movement of the pull rod, due to the setting of the guide slot and the positioning pin, the pull rod will drive the locking block to rotate 90°. At this time, the limit slot on the locking block is disengaged from the turntable, and the turntable will no longer press against the limit block. The limit block is in a free state, and the carrier can be removed for replacement.

[0009] After the carrier is replaced, the cylinder is controlled to hit the moving block again. At this time, the moving block pushes the card block to move toward the locking block. At this time, the lever on the locking hook will slide along the second channel and the first sliding groove to the locking position. During this process, the card block drives the pull rod to move, and the pull rod drives the locking block to move away from the moving block, and drives the locking block to rotate 90° in the opposite direction. At this time, the limit groove on the locking block is tightly attached to the outer periphery of the turntable, pushing the turntable tightly against the limiting block, thereby completing the fixation of the carrier.

[0010] Furthermore, a plurality of first notches are provided on the bottom plate corresponding to the outer periphery of the turntable, each first notch has a U-shaped wheel arranged in a rotatable shape, and each U-shaped wheel is rotatably matched with the outer ring of the turntable, and the limit block is arranged between two of the U-shaped wheels.

[0011] By adopting the above technical solution and setting the U-shaped wheel, when the turntable drives the vehicle to rotate, the U-shaped wheel can guide the turntable to rotate, thereby improving the stability and safety of the turntable rotation.

[0012] Furthermore, a first guide bar and a second guide bar are symmetrically arranged on the bottom plate, and the first guide bar and the second guide bar are both used to guide the outer ring of the turntable; a third guide bar is symmetrically arranged on the turntable, and each third guide bar is used to guide the inner ring of the turntable, and the two third guide bars are respectively arranged on both sides of the limit block.

[0013] By adopting the above technical solution and arranging the first guide bar and the second guide bar, the rotation direction of the turntable can be guided during the rotation of the turntable, thereby ensuring the stability of the turntable.

[0014] Furthermore, a connecting block is fixedly provided at one end of the pull rod away from the locking block, the length direction of the connecting block is perpendicular to the length direction of the pull rod, and a fixing rod is fixedly provided at the other end of the connecting block, and the other end of the fixing rod is fixedly connected to the locking block.

[0015] By adopting the above technical solution and setting the connecting block, when the locking block needs to be maintained or replaced, there is no need to replace the entire device, only the locking block needs to be replaced, which not only reduces the maintenance difficulty but also reduces the maintenance cost.

[0016] Furthermore, a guide groove is provided along the length direction of the guide block, the pull rod is provided in the guide groove, and the guide groove and the guide groove are provided in a communicating state.

[0017] Furthermore, a second notch is provided in the guide block at one end away from the locking block, and the locking block is adapted to slide in the second notch; a spring is provided in the guide groove, and the two ends of the spring respectively rest on the pull rod and the locking block; when the limit block is in a fixed state, the spring is in a compressed state.

[0018] By adopting the above technical solution and setting the spring, when the limit block is in a fixed state, the control cylinder hits the card block, and when the lever on the locking hook disengages from the locking position, the compressed spring rebounds, thereby pushing the card block toward the guide rail, and the pull rod drives the positioning pin to rotate 90°, so that the limit block is in a free state. When the carrier is replaced, the control cylinder hits the card block, and the lever on the locking hook slides to the locking position, and the card block moves toward the locking block. At this time, the spring is compressed, and the pull rod drives the positioning pin to rotate 90° in the opposite direction, thereby realizing automatic fixation of the limit block, thereby improving production efficiency.

[0019] Furthermore, the motion block includes an integrally formed first motion plate, a second motion plate and a third motion plate, a slider is fixedly provided on the top of the first motion plate, and a slide groove adapted to the guide rail is provided on the slider, the second motion plate and the third motion plate are both arranged vertically, the bottom of the second motion plate is arranged at one end of the first motion plate, and the second motion plate and the slider are fixedly connected, and the top of the third motion plate is arranged at the other end of the first motion plate.

[0020] Furthermore, when the locking block and the limiting block are positioned relative to each other, a third notch is provided on the rotating disk corresponding to the locking block.

[0021] By adopting the above technical solution and setting the third notch, when the carrier needs to be replaced, the pull rod drives the locking block to rotate, and the third notch can be used to accommodate the rotated locking block.

[0022] In summary, this application has the following beneficial effects:

[0023] 1. Through the setting of the turntable, the carrier can rotate 360° along with the turntable during chip processing, thereby improving processing efficiency. Through the setting of the guide groove and the clamping slot, the cylinder can be controlled to hit the moving block according to processing requirements, and then the position of the locking block can be adjusted to put the carrier in a fixed state or a free state. Therefore, after the carrier is placed on the turntable, it can be automatically positioned and fixed, thereby improving production efficiency.

[0024] 2. Through the setting of the card slot, when the limit plate is in a fixed state, the cylinder hits the moving block, and the card block will first move slightly toward the locking block. Because one end of the locking hook is hinged, the lever on the locking hook will slide from the locking position to the first channel, and then the card block will drive the pull rod to move toward the guide rail. During the movement of the pull rod, due to the setting of the guide slot and the positioning pin, the pull rod will drive the locking block to rotate 90 degrees. At this time, the limit slot on the locking block is disengaged from the turntable, and the turntable will no longer press against the limit block. The limit block is in a free state. The carrier can then be removed and replaced; after the carrier is replaced, the cylinder is controlled to hit the moving block again, and the moving block pushes the clamping block to move toward the locking block. At this time, the lever on the locking hook will slide along the second channel and the first sliding groove to the locking position. During this process, the clamping block drives the pull rod to move, and the pull rod drives the locking block to move away from the moving block, and drives the locking block to rotate 90 degrees in the opposite direction. At this time, the limiting groove on the locking block is tightly attached to the outer periphery of the turntable, pushing the turntable tightly against the limiting block, thereby completing the fixation of the carrier;

[0025] 3. Through the setting of the U-shaped wheel, when the turntable drives the carrier to rotate, the U-shaped wheel can guide the turntable to rotate, thereby improving the stability and safety of the turntable rotation;

[0026] 4. By setting the first guide bar and the second guide bar, the rotation direction of the turntable can be guided during its rotation, thereby ensuring the stability of the turntable;

[0027] 5. Through the setting of the connecting block, when the locking block needs to be maintained or replaced, there is no need to replace the entire device, only the locking block needs to be replaced, which can not only reduce the maintenance difficulty, but also reduce the maintenance cost;

[0028] 6. Through the setting of the spring, when the limit block is in a fixed state, the control cylinder hits the block. When the lever on the locking hook disengages from the locking position, the compressed spring rebounds, thereby pushing the block toward the guide rail, and the pull rod drives the positioning pin to rotate 90°, so that the limit block is in a free state. When the carrier is replaced, the control cylinder hits the block, and the lever on the locking hook slides to the locking position. The block moves toward the locking block. At this time, the spring is compressed, and the pull rod drives the positioning pin to rotate 90° in the opposite direction, thereby realizing automatic fixation of the limit block, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a top view of a rotary positioning mechanism;

[0030] Figure 2 This is a schematic diagram of the installation of a guide block in a rotary positioning mechanism;

[0031] Figure 3 This is a structural schematic diagram of the locking block when the turntable is in a fixed state in an embodiment of the rotary positioning mechanism;

[0032] Figure 4 This is a structural schematic diagram of the locking block in an embodiment of the rotary positioning mechanism when the turntable is in a free state;

[0033] Figure 5 This is a structural diagram of a card slot in a rotary positioning mechanism;

[0034] Figure 6 This is a left side view of a card slot in a rotary positioning mechanism;

[0035] In the figure: 1. Base plate; 2. Turntable; 3. Limit block; 4. Guide block; 5. Pull rod; 6. Block; 7. Guide groove; 8. Positioning pin; 9. Locking block; 10. Limit groove; 11. Guide rail; 12. Moving block; 1201. First moving plate; 1202. Second moving plate; 1203. Third moving plate; 13. Cylinder; 14. Locking hook; 15. Slot; 1501. First channel; 1502. Second channel; 1503. Locking channel; 15031. First sliding groove; 15032. Second sliding groove; 16. U-shaped wheel; 17. First guide bar; 18. Second guide bar; 19. Third guide bar; 20. Connecting block; 21. Fixing rod; 22. Spring; 23. Slider; 24. Third notch. DETAILED DESCRIPTION

[0036] The present application is further described in detail below with reference to the accompanying drawings.

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0038] In a specific embodiment, referring to Figure 1-6 , a rotary positioning mechanism includes a base plate 1, a turntable 2 arranged in a circular ring shape on the base plate 1, and the turntable 2 and the base plate 1 are matched in a rotating shape, the inner ring of the turntable 2 is used to install the carrier, and the turntable 2 is provided with a limit block 3 for limiting the carrier; a guide block 4 is fixedly provided at the bottom of the turntable 2, and a pull rod 5 and a block 6 are slidably provided on the guide block 4. The pull rod 5 is arranged along the length direction of the guide block 4, one end of the pull rod 5 is fixedly connected to the block 6, and the other end of the pull rod 5 extends out of the guide block 4; a guide groove 7 is provided on the outer periphery of the end of the guide block 4 away from the block 6, and a positioning pin 8 adapted to the guide groove 7 is provided on the pull rod 5; a locking block 9 is fixedly provided on the end of the pull rod 5 away from the block 6, and a limit groove 10 for limiting the limit block 3 is provided on the end of the locking block 9 close to the center of the turntable 2; the side wall of the guide block 4 close to the locking block 9 The top of the rotary table 2 is provided with a locking hook 14, and a lever is fixedly provided on one side of the locking hook 14 near the card block 6 at the other end. A slot 15 is provided on the card block 6 corresponding to the lever, and the slot 15 has a locking position and a release position. A guide rail 11 is fixedly provided at the bottom of the rotary table 2, and a moving block 12 is slidably provided on the guide rail 11. One end of the moving block 12 is fixedly connected to the other end of the card block 6. A cylinder 13 is fixedly provided at the bottom of the bottom plate 1. When the locking block 9 and the limit block 3 are relative to each other, the output shaft of the cylinder 13 points to the rotating part. When the cylinder 13 is used to hit the moving block 12, the card block 6 moves, driving the lever to slide from the locking position to the release position or driving the lever to slide from the release position to the locking position, so that the locking block 9 rotates 90° toward the limit block 3 or back to the limit block 3, so that the rotary table 2 disengages from the limit block 3 or presses against the limit block 3.

[0039] The specific articulation method of the locking hook 14 and the guide block 4 belongs to the prior art and will not be described in detail here.

[0040] When processing chips, the carrier can rotate 360° following the turntable 2, thereby improving processing efficiency; through the setting of the guide groove 7 and the card slot 15, the cylinder 13 can be controlled to hit the moving block 12 according to processing requirements, and then the position of the locking block can be adjusted to make the carrier in a fixed state or a free state. Therefore, after the carrier is placed on the turntable 2, the carrier can be automatically positioned and fixed, thereby improving production efficiency.

[0041] The card slot 15 includes a first channel 1501, a second channel 1502 and a locking channel 1503. The first channel 1501 is arranged along the length direction of the pull rod 5. The left end of the first channel 1501 is a loose position. The second channel 1502 is arranged in an inclined shape. The bottom end of the second channel 1502 is connected to the left end of the first channel 1501, and the second channel 1502 and the first channel 1501 are arranged at an acute angle. The locking channel 1503 includes a first sliding groove 15031 and a second sliding groove 15032 that are connected. The sliding groove 15031 and the second sliding groove 15032 are arranged at an obtuse angle. The connection between the first sliding groove 15031 and the second sliding groove 15032 is a locking position. The other end of the first sliding groove 15031 is connected to the top of the second channel 1502, and the first sliding groove 15031 and the second channel 1502 are arranged at an acute angle. The other end of the second sliding groove 15032 is connected to the right end of the first channel 1501, and the second sliding groove 15032 and the first channel 1501 are arranged at an acute angle.

[0042] When the limit plate is in a fixed state, the cylinder 13 hits the moving block 12, and the card block 6 will first move slightly toward the locking block 9. Since one end of the locking hook 14 is hinged, the lever on the locking hook 14 will slide from the locking position to the first channel 1501, and then the card block 6 will drive the pull rod 5 to move in the direction of the guide rail 11. During the movement of the pull rod 5, due to the setting of the guide groove 7 and the positioning pin 8, the pull rod 5 will drive the locking block 9 to rotate 90°. At this time, the limiting groove 10 on the locking block 9 is disengaged from the turntable 2, and the turntable 2 will no longer press against the limiting block 3. The limiting block 3 is in a free state, and the carrier can be removed for replacement.

[0043] After the carrier is replaced, the cylinder 13 is controlled to hit the moving block 12 again. At this time, the moving block 12 pushes the clamping block 6 to move toward the locking block 9. At this time, the lever on the locking hook 14 will slide along the second channel 1502 and the first sliding groove 15031 to the locking position. During this process, the clamping block 6 drives the pull rod 5 to move, and the pull rod 5 drives the locking block 9 to move away from the moving block 12, and drives the locking block 9 to rotate 90° in the opposite direction. At this time, the limiting groove 10 on the locking block 9 is tightly attached to the outer periphery of the turntable 2, pushing the turntable 2 tightly to the limiting block, thereby completing the fixation of the carrier.

[0044] A plurality of first notches are provided on the bottom plate 1 corresponding to the outer periphery of the turntable 2, and a U-shaped wheel 16 is arranged in a rotatable manner in each first notch, and each U-shaped wheel 16 is rotatably matched with the outer ring of the turntable 2, and the limit block 3 is arranged between two of the U-shaped wheels 16; in the process of the turntable 2 driving the carrier to rotate, the U-shaped wheel 16 can guide the turntable 2 to rotate, thereby improving the stability and safety of the rotation of the turntable 2.

[0045] A first guide bar 17 and a second guide bar 18 are symmetrically arranged on the base plate 1, and the first guide bar 17 and the second guide bar 18 are both used to guide the outer ring of the turntable 2; a third guide bar 19 is symmetrically arranged on the turntable 2, and each third guide bar 19 is used to guide the inner ring of the turntable 2, and the two third guide bars 19 are respectively arranged on both sides of the limit block 3; the first guide bar 17 and the second guide bar 18 can guide the rotation direction of the turntable 2 during the rotation of the turntable 2, thereby ensuring the stability of the turntable 2.

[0046] A connecting block 20 is fixedly provided at one end of the pull rod 5 away from the clamping block 6, and the length direction of the connecting block 20 is perpendicular to the length direction of the pull rod 5. A fixing rod 21 is fixedly provided at the other end of the connecting block 20, and the other end of the fixing rod 21 is fixedly connected to the locking block 9; when the locking block 9 needs maintenance or replacement, there is no need to replace the entire device, only the locking block 9 needs to be replaced, which not only reduces the difficulty of maintenance but also reduces the maintenance cost.

[0047] A guide groove is provided along the length direction of the guide block 4 , the pull rod 5 is provided in the guide groove, and the guide groove 7 and the guide groove are provided in a communicating state.

[0048] When the limit block 3 is in the fixed state, the spring 22 is in a compressed state; when the limit block 3 is in the fixed state, the control cylinder 13 hits the block 6, and when the lever on the locking hook 14 disengages from the locking position, the compressed spring 22 rebounds, thereby pushing the block 6 to move in the direction of the guide rail 11, and the pull rod 5 drives the positioning pin 8 to rotate 90°, so that the limit block 3 is in a free state. When the carrier is replaced, the control cylinder 13 hits the block 6, and the lever on the locking hook 14 slides to the locking position, and the block 6 moves toward the direction of the locking block 9. At this time, the spring 22 is compressed, and the pull rod 5 drives the positioning pin 8 to rotate 90° in the opposite direction, thereby realizing automatic fixing of the limit block 3, thereby improving production efficiency.

[0049] The moving block 12 includes an integrally formed first moving plate 1201, a second moving plate 1202 and a third moving plate 1203. A slider 23 is fixedly provided on the top of the first moving plate 1201, and a sliding groove compatible with the guide rail 11 is provided on the slider 23. The second moving plate 1202 and the third moving plate 1203 are both arranged vertically, and the bottom of the second moving plate 1202 is arranged at one end of the first moving plate 1201, and the second moving plate 1202 and the slider 23 are fixedly connected. The top of the third moving plate 1203 is arranged at the other end of the first moving plate 1201.

[0050] When the locking block 9 and the limit block 3 are positioned relative to each other, a third notch 24 is provided on the turntable 2 corresponding to the locking block 9; when the carrier needs to be replaced, the pull rod 5 drives the locking block 9 to rotate, and the third notch 24 can be used to accommodate the locked block 9 after rotation.

[0051] Working principle: When the carrier on the turntable 2 needs to be replaced, the control cylinder 13 hits the third moving plate 1203 in the moving block 12. After the moving block 12 is hit, it will move along the guide rail 11 toward the locking block 9, and then the second moving plate 1202 in the moving block 12 pushes the card block 6 toward the locking block 9. At this time, the lever in the locking hook 14 will disengage from the locking position. At this time, the compressed spring 22 rebounds to its normal state. After the card block 6 is subjected to the elastic force of the spring 22, the card block 6 will move toward the direction of the moving block 12, and the lever in the locking hook 14 will move along the third moving plate 1203. The second sliding groove 15032 slides to the release position of the first channel 1501, and the clamping block 6 drives the pull rod 5 to move toward the moving block 12. During the movement of the pull rod 5, due to the setting of the guide groove 7 and the positioning pin 8, the pull rod 5 will move toward the moving block 12 while driving the locking block 9 to rotate, and the locking block 9 rotates 90° away from the limit block 3 to the third notch 24. At this time, the limiting groove on the locking block 9 is disengaged from the outer edge of the turntable 2, and there is a gap between the turntable 2 and the limit block 3. At this time, the carrier is in a free state and can be removed for replacement;

[0052] After the carrier is replaced, the control cylinder 13 hits the third moving plate 1203 in the moving block 12, and the moving block 12 moves along the guide rail 11 toward the locking block 9. At this time, the lever in the locking hook 14 slides from the release position along the second channel 1502 to the first sliding groove 15031 and stops at the locking position. During this process, the spring 22 is compressed, and the pull rod 5 moves away from the guide rail 11 and rotates. At this time, the locking block 9 rotates 90° in the opposite direction, leaving the third notch 24, and making the limiting groove on the locking block 9 rest on the outer periphery of the turntable 2, pushing the turntable 2 so that the turntable 2 is tightly against the limit block 3, completing the fixation of the carrier.

[0053] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A rotary positioning mechanism, comprising a base plate, characterized in that: The bottom plate is provided with a turntable in an annular shape, and the turntable and the bottom plate are rotated together, the inner ring of the turntable is used to install the carrier, and the turntable is provided with a limit block for limiting the carrier; A guide block is fixedly provided at the bottom of the turntable, a pull rod and a block are slidably provided on the guide block, the pull rod is provided along the length direction of the guide block, one end of the pull rod is fixedly connected to the block, and the other end of the pull rod extends out of the guide block; A guide groove is provided on the outer periphery of one end of the guide block away from the clamping block, and a positioning pin adapted to the guide groove is provided on the pull rod; A locking block is fixedly provided at one end of the pull rod away from the clamping block, and a limiting groove for limiting the limiting block is provided at one end of the locking block close to the center of the turntable; A locking hook is hingedly connected to the side wall surface of the guide block close to the locking block, and a lever is fixedly provided on one side of the other end of the locking hook close to the clamping block. A clamping slot is provided on the clamping block corresponding to the lever, and the clamping slot has a locking position and a release position. A guide rail is fixedly provided at the bottom of the turntable, a moving block is slidably provided on the guide rail, and one end of the moving block is fixedly connected to the other end of the clamping block; A cylinder is fixedly provided at the bottom of the base plate. When the locking block and the limit block are positioned relative to each other, the output shaft of the cylinder points to the rotating part. When the cylinder is used to hit the moving block, the blocking block moves, driving the lever to slide from the locking position to the releasing position or driving the lever to slide from the releasing position to the locking position, so that the locking block rotates 90° toward the limit block or away from the limit block, so that the turntable disengages from the limit block or presses against the limit block.

2. A rotary positioning mechanism according to claim 1, characterized in that: The card slot includes a first channel, a second channel and a locking channel, the first channel is arranged along the length direction of the pull rod, the left end of the first channel is the release position, the second channel is arranged in an inclined shape, the bottom end of the second channel is connected to the left end of the first channel, and the second channel and the first channel are arranged at an acute angle; The locking channel includes a first sliding groove and a second sliding groove that are connected to each other, and the first sliding groove and the second sliding groove are arranged at an obtuse angle. The connection between the first sliding groove and the second sliding groove is the locking position. The other end of the first sliding groove is connected to the top end of the second channel, and the first sliding groove and the second channel are arranged at an acute angle. The other end of the second sliding groove is connected to the right end of the first channel, and the second sliding groove and the first channel are arranged at an acute angle.

3. A rotation positioning mechanism according to claim 1, characterized in that: A plurality of first notches are provided on the bottom plate corresponding to the outer periphery of the turntable, and a U-shaped wheel is arranged in a rotatable manner in each first notch, and each U-shaped wheel is rotatably matched with the outer ring of the turntable, and the limit block is arranged between two of the U-shaped wheels.

4. A rotary positioning mechanism according to claim 1, characterized in that: A first guide bar and a second guide bar are symmetrically arranged on the bottom plate, and the first guide bar and the second guide bar are both used to guide the outer ring of the turntable; a third guide bar is symmetrically arranged on the turntable, and each third guide bar is used to guide the inner ring of the turntable, and the two third guide bars are respectively arranged on both sides of the limit block.

5. The rotary positioning mechanism according to claim 1, characterized in that: A connecting block is fixedly provided at one end of the pull rod away from the locking block, and the length direction of the connecting block is perpendicular to the length direction of the pull rod. A fixing rod is fixedly provided at the other end of the connecting block, and the other end of the fixing rod is fixedly connected to the locking block.

6. The rotary positioning mechanism according to claim 1, characterized in that: A guide groove is provided along the length direction of the guide block, the pull rod is provided in the guide groove, and the guide groove and the guide groove are provided in a communicating shape.

7. A rotary positioning mechanism according to claim 6, characterized in that: A second notch is provided at one end of the guide block away from the locking block, and the clamping block is adapted to slide in the second notch; a spring is provided in the guide groove, and the two ends of the spring respectively rest on the pull rod and the clamping block; when the limit block is in a fixed state, the spring is in a compressed state.

8. The rotation positioning mechanism according to claim 1, characterized in that: The motion block includes an integrally formed first motion plate, a second motion plate and a third motion plate. A slider is fixedly provided on the top of the first motion plate, and a slide groove adapted to the guide rail is provided on the slider. The second motion plate and the third motion plate are both arranged vertically, and the bottom of the second motion plate is arranged at one end of the first motion plate, and the second motion plate and the slider are fixedly connected. The top of the third motion plate is arranged at the other end of the first motion plate.

9. The rotary positioning mechanism according to claim 1, characterized in that: When the locking block and the limiting block are positioned relative to each other, a third notch is provided on the rotating disk corresponding to the locking block.

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