A u-shaped cotter forming and handling mechanism and method

Abstract

The application belongs to the field of U-shaped lock pin production, and particularly relates to a U-shaped lock pin forming and carrying mechanism and a carrying method, which comprises a base, a support column is arranged at the top end of the base, a work station frame is arranged at the top end of the support column, a feeding assembly is arranged on one side of the work station frame, a forming assembly, a calibration assembly and a discharging assembly are arranged on the work station frame, and a carrying assembly is arranged at the top end of the base; the device can sequentially realize feeding, pressing forming, calibration and discharging of round bar materials, has high forming and carrying efficiency for U-shaped lock pins, has good effect, meets actual machining and production requirements of different round bar materials, is simple to operate, stable and efficient; the position of the counterweight on the right side can be correspondingly adjusted when the round bar material is pressed and formed, so that the side support plate is always in a horizontal state, and stability and durability are further improved; meanwhile, the detection accuracy can be correspondingly improved according to the distance sensor when the U-shaped lock pin is calibrated, the adaptability is stronger, and the detection effect is better.

Description

Technical Field

[0001] This invention belongs to the field of U-shaped locking pin production, specifically a U-shaped locking pin forming and handling mechanism and handling method. Background Technology

[0002] Locking pins are mainly used to fix the side push jacks and side guard plates of hydraulic support accessories. Since general hydraulic supports are designed with side guard plates on both sides, both sides can be used as movable side guard plates for convenience and as needed. However, one side must be fixed during use. Since the two sides can be interchanged as movable side guard plates, locking pins are needed to fix one side as a support point to prevent it from moving. Among the locking pins, there is a U-shaped locking pin. The U-shaped locking pin is set in a U shape. In the production process of U-shaped locking pin, it needs to go through two processes: bending and forming and elephant foot forming. First, the round column is transported to the bending forming mold and the round column is extruded into a U shape. Then, the U-shaped locking pin is transported to the calibration mold and the two feet of the U-shaped locking pin are calibrated and formed to complete the U-shaped locking pin forming. Finally, the U-shaped locking pin is transported and unloaded.

[0003] Chinese invention patent 2016111158060 discloses a one-time forming stamping die for a U-shaped car door latch, including an upper die and a lower die. The upper die includes an upper die base, an upper clamping plate, an upper die assembly, two guide post bushings, and four guide shafts of equal length. The upper clamping plate is disposed between the upper die base and the upper die assembly. The two guide post bushings are fixedly installed on both sides of the upper die base. The four guide shafts of equal length are fixedly installed on the upper die assembly. This forming stamping die has low forming efficiency and poor forming effect, and cannot meet the actual processing and production needs.

[0004] When handling materials, the production line is linear, which requires the handling grippers to move back and forth on the production line. This means that the handling grippers need to move back and forth to each workstation to handle the materials, which takes a long time and results in low production efficiency.

[0005] Meanwhile, when the round bar is being pressed, the reverse force exerted by the round bar on the upper die causes the upper die to move upward, which in turn causes the entire device to tilt and rotate, ultimately reducing the pressing effect on the round bar.

[0006] If the round bar breaks during the pressing process, the device will rotate in the opposite direction under the original pressure, causing the device to shake and damaging the internal structure and U-shaped locking pin.

[0007] When calibrating the machined U-shaped locking pins, the existing device has low detection accuracy and poor detection effect. Furthermore, it cannot guarantee the levelness and stability of the device during the detection process, thereby reducing the actual processing quality and efficiency of the U-shaped locking pins. Summary of the Invention

[0008] In order to overcome the shortcomings of the prior art, the present invention provides a U-shaped locking pin forming and transporting mechanism and transporting method, which effectively solves the above problems.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a U-shaped locking pin forming and conveying mechanism, comprising a base, a support column at the top of the base, a workstation frame at the top of the support column, a feeding component on one side of the workstation frame, a forming component, a calibration component and a unloading component on the workstation frame, and a conveying component at the top of the base.

[0010] The conveying assembly includes a central support column, a top plate hinged to the top of the central support column, side support plates at equal angles on the outer side of the top plate, annular support plates on the outer side of the side support plates, annular grooves at the top of the annular support plates, annular rotating plates rotatably mounted on the annular grooves, and correction holes at equal angles on the annular rotating plates. A clamping cylinder is provided inside the correction hole, a conveying gripper is provided at the output end of the clamping cylinder, a counterweight is provided at the top of the conveying gripper, and a positioning unit is provided at the top of one of the side support plates.

[0011] The positioning unit includes a movable platform, a movable frame above the movable platform, a top box at the top of the movable frame, a first movable plate movably disposed inside the top box, a positioning rod at the bottom of the first movable plate, and a plumb rod at the bottom of the positioning rod.

[0012] Multiple sets of positioning holes are opened at equal angles on the annular rotating plate. Multiple sets of connecting airbags are equidistantly arranged on the inner circumferential side of the positioning holes. Each connecting airbag is equipped with a distance sensor. Multiple sets of inflatable airbags are equidistantly arranged on the inner circumferential side of the correction hole. The connecting airbags and inflatable airbags in the same position are connected by a flexible tube.

[0013] This device can not only balance the U-shaped locking pin during processing, but also perform precise detection on it. It is highly adaptable and stable, meeting the needs of actual processing and production.

[0014] Preferably, the workstation frame is arranged in a ring shape. The forming component is located 90 degrees clockwise from the feeding component, the calibration component is located on the opposite side of the feeding component, and the unloading component is located 90 degrees counterclockwise from the feeding component. The central support is located on the inner side of the workstation frame and is coaxial with the workstation frame. The inner wall of the connecting airbag is provided with a connecting spring, and the other end of the connecting spring is fixedly connected to the inner wall of the positioning hole. The inner wall of the inflating airbag is provided with a return spring, and the other end of the return spring is fixedly connected to the inner wall of the correction hole. The outer walls of the inflating airbags are all fixedly connected to the outer walls of the clamping cylinders. Four side support plates are provided, and the directions of the four side support plates correspond to the directions of the feeding component, forming component, calibration component, and unloading component, respectively. The ring rotating plate is located above the workstation frame, and four transport grippers are provided.

[0015] Preferably, a driving unit is provided between the annular rotating plate and the annular support plate. The driving unit includes a limiting annular groove formed on the bottom wall of the annular groove, a limiting rotating ring provided at the top of the annular rotating plate, the limiting rotating ring being rotatably installed inside the limiting annular groove, toothed grooves being evenly formed on the inner side of the annular rotating plate, a connecting groove being formed on the inner side of the annular support plate, the connecting groove being connected to the annular groove, a gear being provided inside the connecting groove, the gear meshing with the limiting rotating ring, the gear being fixedly connected to the output shaft of the rotating motor, the rotating motor being fixedly installed on the motor mounting bracket, and the motor mounting bracket being fixedly installed on the central support column.

[0016] Preferably, the bottom of the movable frame near the annular rotating plate is symmetrically provided with two limiting rollers, and the positioning rod is located between the two limiting rollers. The bottom end of the first movable plate is provided with a positioning spring, the top end of the first movable plate is provided with a first magnetic block, and the top end of the top box is provided with a first electromagnet. The first electromagnet and the first magnetic block are magnetically connected. The end of the movable frame away from the annular rotating plate is provided with a slide block. The top end of the movable platform is provided with a side groove, and the slide block is slidably connected to the side groove. The end of the side groove is rotatably provided with a positioning screw, which is threadedly connected to the slide block. One end of the positioning screw is fixedly connected to the output shaft of the positioning motor, and the positioning motor is fixedly installed on the movable platform.

[0017] Preferably, the feeding assembly includes a material box installed on one side of the workstation frame. A fixing frame is provided on the side of the material box near the workstation frame, and the fixing frame is fixedly connected to the side wall of the workstation frame. A material placement groove is opened inside the material box. A discharge groove is opened at the bottom end of the material placement groove near the workstation frame. The discharge groove passes through the side of the material box near the workstation frame. A material plate is provided on the side of the material box near the workstation frame. The material plate extends to the top of the workstation frame. The top wall of the material plate is flush with the bottom wall of the discharge groove. A limiting plate is provided at the top of the end of the material plate away from the material box. A plate box is provided on the side of the material box away from the workstation frame. A push plate is movably provided inside the plate box. One end of the push plate enters the interior of the discharge groove. The other end of the push plate is fixedly connected to the output end of the feeding cylinder. The feeding cylinder is fixedly installed on the side of the plate box away from the material box.

[0018] Preferably, the forming assembly includes a first workstation seat installed on the side of the workstation frame near the central support column. The first workstation seat is located at a 90-degree clockwise direction from the feeding assembly. A forming groove is provided at the top of the first workstation seat, extending through the workstation frame. A forming screw is rotatably provided at the end of the forming groove. One end of the forming screw is fixedly connected to the output shaft of the forming motor. The forming motor is fixedly installed on the first workstation seat. A first lower seat is provided above the first workstation seat. A forming slider is provided at the bottom of the first lower seat. The forming slider is slidably connected to the forming groove and threadedly connected to the forming screw. A first lower mold is provided at the top of the first lower seat. The first workstation seat is located below one of the side support plates. A first upper mold is provided below the side support plates. The first upper mold is fixedly connected to the output end of the forming cylinder. The forming cylinder is fixedly installed above the side support plates. The first upper mold is located above the first lower mold.

[0019] Preferably, the calibration assembly includes a second workstation seat installed on the side of the workstation frame near the central support column. The second workstation seat is located on the opposite side of the feeding assembly relative to the central support column. A calibration groove is provided at the top of the second workstation seat, extending through the workstation frame. A calibration screw is rotatably provided at the end of the calibration groove. One end of the calibration screw is fixedly connected to the output shaft of the calibration motor, which is fixedly installed on the second workstation seat. A second lower seat is provided above the second workstation seat, and a calibration slider is provided at the bottom of the second lower seat. The calibration slider is slidably connected to the calibration groove and threadedly connected to the calibration screw. A second lower mold is provided at the top of the second lower seat. The second workstation seat is located below another side support plate, and a second upper mold is provided below the side support plate. The second upper mold is fixedly connected to the output end of the calibration cylinder, which is fixedly installed above the side support plate. The second upper mold is located above the second lower mold. A feeding assembly is provided inside both the first lower seat and the second lower seat.

[0020] Preferably, the unloading assembly includes a recycling bin located on the side of the workstation frame away from the central support column. The height of the recycling bin is lower than the height of the workstation frame. The side of the recycling bin closest to the workstation frame is provided with a unloading slide plate. The unloading slide plate is inclined upward toward one end of the workstation frame. One end of the unloading slide plate is located above the workstation frame and is fixedly installed with the workstation frame. The unloading slide plate is located at a counterclockwise 90-degree angle to the loading assembly.

[0021] Preferably, the ejector assembly includes a movable groove formed inside the first lower mold and the second lower mold. A second movable plate is movably disposed inside the movable groove. An ejector spring is disposed at the top of the second movable plate. Two ejector springs pass through the inner cavities of the first lower mold and the second lower mold, respectively. The tops of the two ejector springs cooperate with the bottom walls of the inner cavities of the first lower mold and the second lower mold, respectively. An ejector rod is disposed at the top of the second movable plate. The top of the ejector rod is fixedly connected to the inner top wall of the movable groove. A second magnetic block is disposed at the bottom of the second movable plate. A second electromagnet is disposed on the inner bottom wall of the movable groove. The second electromagnet is magnetically connected to the second magnetic block.

[0022] A method for transporting a U-shaped locking pin, wherein the method uses a U-shaped locking pin forming and transporting mechanism to transport the U-shaped locking pin, and the transporting steps are as follows:

[0023] S1. The four transport grippers are located above the loading assembly, forming assembly, calibration assembly, and unloading assembly, respectively. The transport grippers move to pick up the round bar material.

[0024] S2. The annular rotating plate rotates 90 degrees clockwise, and the round bar moves to the top of the forming component for pressing and forming. The side support plate tilts and drives the plumb rod to tilt and squeeze the connecting airbag inside the positioning hole. The gas inside the connecting airbag enters the expansion airbag through the hose. The expansion airbag drives the clamping cylinder and the counterweight to move in the opposite direction and balance the side support plate.

[0025] S3. The annular rotating plate rotates 90 degrees clockwise again, and the transport gripper brings the U-shaped locking pin to the calibration component. When the U-shaped locking pin is not qualified, the U-shaped locking pin drives the side support plate to tilt through the calibration component. The plumb rod tilts and squeezes the connecting airbag inside the positioning hole. The gas inside the connecting airbag enters the inflating airbag through the hose. The inflating airbag drives the clamping cylinder and the counterweight to move in the opposite direction and balance the side support plate. The distance value detected by the distance sensor decreases.

[0026] S4. The annular rotating plate rotates 90 degrees clockwise again, causing the transport gripper to rotate with the formed U-shaped locking pin to the unloading assembly for unloading.

[0027] By further defining the handling method, the machining accuracy and efficiency of the U-shaped locking pin can be improved.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. This invention uses a ring-shaped workstation frame with a feeding component, forming component, calibration component, and unloading component positioned at the top of the workstation frame. Due to the rotation of the ring-shaped rotating plate, one of the transport grippers passes through the feeding component, forming component, calibration component, and unloading component in sequence, performing feeding, U-shaped pressing, calibration, and unloading of the workpiece in sequence. This achieves continuous forming and unloading of round bar material feeding, bending, and calibration, making U-shaped locking pin production continuous and improving production efficiency.

[0030] 2. The invention features a rotating annular plate with four transport grippers at equal angles below it. When the annular plate stops rotating, the four transport grippers are positioned above the loading assembly, forming assembly, calibration assembly, and unloading assembly, respectively. This allows the previous station to continue its corresponding work while the material moves from one station to the next for processing, thus improving work efficiency.

[0031] 3. The invention features a first workstation seat and a second workstation seat both located inside the workstation frame. The first lower die can move back and forth between the top of the workstation frame and the top of the first workstation seat, and the second lower die can move back and forth between the top of the workstation frame and the top of the second workstation seat. This allows the first lower die and the second lower die to move to the bottom of the first upper die and the forming cylinder respectively for processing after the material is loaded by the transport gripper. This offsets the loading position from the processing position, making the equipment installation and use more convenient.

[0032] 4. This invention uses a ring-shaped rotating plate that is rotatably installed in a ring groove. After the positioning motor is turned on, the positioning screw rotates and drives the moving frame to move, so that the limiting roller presses on the top of the ring-shaped rotating plate to limit the rotation of the ring-shaped rotating plate and improve the rotational stability of the ring-shaped rotating plate. At the same time, positioning holes are opened at equal angles on the ring-shaped rotating plate. Before processing, the first electromagnet is de-energized, causing the positioning rod to move downward and engage with the lower positioning hole, thereby positioning the ring-shaped rotating plate and making the position of the transport gripper can be determined, thus improving the accuracy of material handling and transfer.

[0033] 5. This invention, by setting up a counterweight, a compression airbag, and an expansion airbag, allows the device to sequentially perform feeding, pressing, calibration, and unloading of round bars. It also offers high efficiency and effectiveness in forming and transporting U-shaped locking pins, meeting the actual processing and production needs of different round bars. The device is simple to operate, stable, and efficient. Furthermore, during the pressing of the round bars, the position of the counterweight on the right side can be adjusted accordingly, ensuring the side support plate remains horizontal at all times, further improving stability and durability. Simultaneously, during the calibration of the U-shaped locking pins, the detection accuracy can be improved based on the distance sensor, resulting in greater adaptability and better detection performance. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0035] In the attached diagram:

[0036] Figure 1 This is a schematic diagram of the U-shaped locking pin forming and conveying mechanism of the present invention;

[0037] Figure 2 This is a schematic diagram of the feeding component structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the molding component structure of the present invention;

[0039] Figure 4 This is a schematic diagram of the calibration component structure of the present invention;

[0040] Figure 5 This is a schematic diagram of the feeding assembly structure of the present invention;

[0041] Figure 6 This is a schematic diagram of the transport component structure of the present invention;

[0042] Figure 7 This is a schematic diagram of the driving unit structure of the present invention;

[0043] Figure 8 This is a schematic diagram of the positioning unit structure of the present invention;

[0044] Figure 9 This is a schematic diagram of the top box structure of the present invention;

[0045] Figure 10 This is a schematic diagram of the top material assembly structure of the present invention;

[0046] Figure 11 This is a partial top cross-sectional view of the annular rotating plate in Embodiment 2 of the present invention;

[0047] Figure 12 This is a partial frontal sectional view of the annular ring plate in Embodiment 2 of the present invention.

[0048] In the diagram: 1. Base; 2. Support column; 3. Workstation frame; 4. Feeding assembly; 401. Material box; 402. Fixing frame; 403. Material placement groove; 404. Material discharge groove; 405. Material plate; 406. Limiting plate; 407. Plate box; 408. Push plate; 409. Feeding cylinder; 5. Forming assembly; 501. First workstation seat; 502. Forming slide; 503. Forming screw; 504. Forming motor; 505. First lower seat; 506. Forming slider; 507. First lower mold; 508. First upper mold; 509. Forming... 6. Calibration assembly; 601. Second station seat; 602. Calibration slide; 603. Calibration screw; 604. Calibration motor; 605. Second lower seat; 606. Calibration slider; 607. Second lower mold; 608. Second upper mold; 609. Calibration cylinder; 7. Unloading assembly; 701. Unloading slide plate; 702. Recycling box; 8. Handling assembly; 801. Central support column; 802. Top plate; 803. Side support plate; 804. Annular support plate; 805. Annular groove; 806. Annular rotating plate; 807. Clamping device Cylinder; 808, Handling gripper; 8081, Counterweight; 809, Drive unit; 8091, Limiting ring groove; 8092, Limiting rotating ring; 8093, Gear groove; 8094, Connecting groove; 8095, Gear; 8096, Rotary motor; 810, Positioning unit; 8101, Moving table; 8102, Side groove; 8103, Positioning screw; 8104, Positioning motor; 8105, Slide; 8106, Moving frame; 8107, Limiting roller; 8108, Top box; 8109, First movable plate; 81010 81011. Positioning rod; 81012. Positioning spring; 81013. First magnet; 81014. First electromagnet; 81015. Positioning hole; 81016. Plumb rod; 81017. Connecting airbag; 81018. Connecting spring; 81019. Hoses; 81010. Inflatable airbag; 81020. Reset spring; 81021. Correction hole; 9. Top material assembly; 901. Movable groove; 902. Second movable plate; 903. Top material spring; 904. Top rod; 905. Second magnet; 906. Second electromagnet. Detailed Implementation

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0050] Example 1, by Figure 1 - Figure 10 The present invention includes a base 1, with support columns 2 at equal angles at the top of the base 1, and a workstation frame 3 at the top of the support columns 2. The workstation frame 3 is arranged in a ring shape, and a feeding component 4 is provided on one side of the workstation frame 3 to perform the feeding process of the workpiece. A forming component 5 is provided on the workstation frame 3, which is located at a 90-degree clockwise position from the feeding component 4. The forming component 5 presses the round bar material into shape. A calibration component 6 is provided on the workstation frame 3 to calibrate the U-shaped round bar material. The calibration component 6 is located on the opposite side of the feeding component 4. A unloading component 7 is provided on the workstation frame 3 to perform the unloading process. The unloading component 7 is located at a 90-degree counterclockwise position from the feeding component 4. A conveying component 8 is provided at the top of the base 1 to convey the round bar material.

[0051] The handling assembly 8 includes a central support column 801 mounted on the top of the base 1. The central support column 801 is located inside the workstation frame 3 and is coaxially arranged with the workstation frame 3. A top plate 802 is provided at the top of the central support column 801. Side support plates 803 are provided at equal angles on the outer side of the top plate 802. There are four side support plates 803, and the directions of the four side support plates 803 correspond to the directions of the feeding assembly 4, the forming assembly 5, the calibration assembly 6, and the unloading assembly 7, respectively. A ring is provided on the outer side of the side support plates 803. The annular support plate 804 has an annular groove 805 at its top. An annular rotating plate 806 is rotatably mounted on the annular groove 805. The annular rotating plate 806 is located above the workstation frame 3. The annular rotating plate 806 has equal-angled straightening holes 81021. A clamping cylinder 807 is installed inside the straightening hole 81021. Four transport grippers 808 are provided on the output end of the clamping cylinder 807. A drive unit is located between the annular rotating plate 806 and the annular support plate 804. 809, one of the side support plates 803 has a positioning unit 810 at its top. The workstation frame 3 is arranged in a ring shape, and the feeding component 4, forming component 5, calibration component 6, and unloading component 7 are set at the top of the workstation frame 3 at equal angles. As the annular rotating plate 806 rotates, one of the transport grippers 808 passes through the feeding component 4, forming component 5, calibration component 6, and unloading component 7 in sequence, feeding, U-shaped pressing, calibration, and unloading of the workpiece in sequence. This realizes continuous forming and unloading of round bar material feeding, bending forming, and calibration, making the production of U-shaped locking pins continuous and improving production efficiency. The annular rotating plate 806 can rotate, and four transport grippers 808 are set at equal angles below the annular rotating plate 806. When the annular rotating plate 806 stops rotating, the four transport grippers 808 can be located above the feeding component 4, forming component 5, calibration component 6, and unloading component 7 respectively. This allows the previous workstation to continue its corresponding work when the material enters from one workstation for processing, improving work efficiency.

[0052] The drive unit 809 includes a limiting annular groove 8091 formed on the bottom wall of the annular groove 805, a limiting rotating ring 8092 provided at the top of the annular rotating plate 806, the limiting rotating ring 8092 being rotatably mounted inside the limiting annular groove 8091, toothed grooves 8093 evenly formed on the inner side of the annular rotating plate 806, and a connecting groove 8094 formed on the inner side of the annular support plate 804, the connecting groove 8094 communicating with the annular groove 805, and a gear 8095 provided inside the connecting groove 8094. Gear 8095 meshes with limit ring 8092. Gear 8095 is fixedly connected to the output shaft of rotary motor 8096. Rotary motor 8096 is fixedly mounted on motor mounting bracket. Motor mounting bracket is fixedly mounted on central support column 801. Rotary motor 8096 starts and drives gear 8095 to rotate. Gear 8095 meshes with limit ring 8092 and drives limit ring 8092 to rotate. The rotation of limit ring 8092 drives annular rotating plate 806 to rotate for operation.

[0053] The positioning unit 810 includes a movable platform 8101 mounted on the top of one of the side support plates 803. A movable frame 8106 is positioned above the movable platform 8101. Two limiting rollers 8107 are symmetrically positioned at the bottom of one end of the movable frame 8106 near the annular rotating plate 806. A top box 8108 is positioned at the top of the movable frame 8106. A first movable plate 8109 is movably mounted inside the top box 8108. A positioning rod 81010 is positioned at the bottom of the first movable plate 8109, with the bottom end of the positioning rod 81010 penetrating to… Below the movable frame 8106, the positioning rod 81010 is located between two limiting rollers 8107. A positioning spring 81011 is provided at the bottom of the first movable plate 8109, and a first magnetic block 81012 is provided at the top of the first movable plate 8109. A first electromagnet 81013 is provided at the top of the top box 8108. The first electromagnet 81013 is magnetically connected to the first magnetic block 81012. A slide block 8105 is provided at the end of the movable frame 8106 away from the annular rotating plate 806. The top of the movable platform 8101 has an opening... The side groove 8102 and the slide block 8105 are slidably connected to the side groove 8102. A positioning screw 8103 is rotatably provided at the end of the side groove 8102. The positioning screw 8103 is threadedly connected to the slide block 8105. One end of the positioning screw 8103 is fixedly connected to the output shaft of the positioning motor 8104. The positioning motor 8104 is fixedly installed on the moving platform 8101. The annular rotating plate 806 is rotatably installed in the annular groove 805. After the positioning motor 8104 is turned on, the positioning screw 8103 rotates and drives the moving frame 8106. The movement causes the limiting roller 8107 to press against the top of the annular rotating plate 806, limiting the rotation stability of the annular rotating plate 806. At the same time, the annular rotating plate 806 has positioning holes 81014 at equal angles. Before processing, the first electromagnet 81013 is de-energized, causing the positioning rod 81010 to move downward and engage with the lower positioning hole 81014, thereby positioning the annular rotating plate 806. This ensures that the position of the transport gripper 808 can be determined, improving the accuracy of material handling and transfer.

[0054] The feeding assembly 4 includes a material box 401 installed on one side of the workstation frame 3. A fixing frame 402 is provided on the side of the material box 401 near the workstation frame 3, and the fixing frame 402 is fixedly connected to the side wall of the workstation frame 3. A material placement trough 403 is provided inside the material box 401. A discharge trough 404 is provided at the bottom end of the material placement trough 403 near the workstation frame 3, penetrating the side of the material box 401 near the workstation frame 3. A material plate 405 is provided on the side of the material box 401 near the workstation frame 3, extending above the workstation frame 3. The top wall of the material plate 405 connects to the discharge trough 404. The bottom walls are flush with each other. A limiting plate 406 is provided on the top of the end of the material plate 405 away from the material box 401. A plate box 407 is provided on the side of the material box 401 away from the workstation frame 3. A push plate 408 is movably provided inside the plate box 407. One end of the push plate 408 enters the interior of the discharge trough 404. The other end of the push plate 408 is fixedly connected to the output end of the feeding cylinder 409. The feeding cylinder 409 is fixedly installed on the side of the plate box 407 away from the material box 401. Therefore, when the feeding cylinder 409 is started, it will drive the push plate 408 to move. The push plate 408 moves and pushes out the round bar material.

[0055] The forming assembly 5 includes a first workstation seat 501 installed on the side of the workstation frame 3 near the central support column 801. The first workstation seat 501 is located at a 90-degree clockwise angle to the feeding assembly 4 on the workstation frame 3. A forming groove 502 is formed at the top of the first workstation seat 501, extending through the workstation frame 3. A forming screw 503 is rotatably mounted at the end of the forming groove 502. One end of the forming screw 503 is fixedly connected to the output shaft of the forming motor 504, which is fixedly mounted on the first workstation seat 501. A first lower seat 505 is provided above the first workstation seat 501, and a forming slider 506 is provided at the bottom of the first lower seat 505. The forming slider 506 is slidably connected to the forming groove 502, and the forming slider 506 and the forming groove 502 are connected to each other. The screw 503 is threadedly connected, and the top of the first lower seat 505 is provided with a first lower die 507. The first station seat 501 is located below one of the side support plates 803. The first upper die 508 is provided below the side support plate 803. The first upper die 508 is fixedly connected to the output end of the forming cylinder 509. The forming cylinder 509 is fixedly installed above the side support plate 803. The first upper die 508 is located above the first lower die 507. The round bar is pressed and formed by the forming component 5. That is, when the forming motor 504 starts and drives the forming screw 503 to rotate, the forming screw 503 drives the first lower die 507 to move laterally and adjust its position through the threaded engagement with the forming slider 506, thereby improving the pressing and forming effect of the round bar.

[0056] The calibration assembly 6 includes a second workstation seat 601 installed on the side of the workstation frame 3 near the central support column 801. The second workstation seat 601 is located on the opposite side of the loading assembly 4 on the workstation frame 3 relative to the central support column 801. A calibration groove 602 is provided at the top of the second workstation seat 601, extending through the workstation frame 3. A calibration screw 603 is rotatably provided at the end of the calibration groove 602. One end of the calibration screw 603 is fixedly connected to the output shaft of the calibration motor 604, which is fixedly mounted on the second workstation seat 601. A second lower seat 605 is provided above the second workstation seat 601, and a calibration slider 606 is provided at the bottom of the second lower seat 605. The calibration slider 606 and the calibration groove 602 are connected. The sliding connection is used, with the calibration slider 606 threadedly connected to the calibration screw 603. The top of the second lower seat 605 is provided with a second lower mold 607. The second workstation seat 601 is located below another side support plate 803. The lower part of the side support plate 803 is provided with a second upper mold 608. The second upper mold 608 is fixedly connected to the output end of the calibration cylinder 609. The calibration cylinder 609 is fixedly installed above the side support plate 803. The second upper mold 608 is located above the second lower mold 607. The interior of the first lower seat 505 and the interior of the second lower seat 605 are both provided with ejector components 9. Therefore, the U-shaped locking pin after pressing is moved into the interior of the second lower mold 607, and the accuracy of pressing the round bar is calibrated by pressing the U-shaped locking pin.

[0057] The first workstation seat 501 and the second workstation seat 601 are both located inside the workstation frame 3. The first lower die 507 can move back and forth between the top of the workstation frame 3 and the top of the first workstation seat 501. The second lower die 607 can move back and forth between the top of the workstation frame 3 and the top of the second workstation seat 601. After the transport gripper 808 loads the material, the first lower die 507 and the second lower die 607 can move to the bottom of the first upper die 508 and the forming cylinder 509 respectively for processing. This makes the loading position and the processing position staggered, which is convenient for the installation and use of the equipment.

[0058] The unloading assembly 7 includes a recycling bin 702 located on the side of the workstation frame 3 away from the central support column 801. The height of the recycling bin 702 is lower than the height of the workstation frame 3. The recycling bin 702 is provided with a unloading slide plate 701 on the side of the workstation frame 3. The unloading slide plate 701 is inclined upward towards one end of the workstation frame 3. One end of the unloading slide plate 701 is located above the workstation frame 3, and the unloading slide plate 701 is fixedly installed with the workstation frame 3. When the unloading slide plate 701 is located on the workstation frame 3, the loading assembly 4 rotates counterclockwise by 90 degrees. Then, the U-shaped locking pin after calibration is moved to the top of the unloading slide plate 701 and slides down into the recycling bin 702 for storage.

[0059] The ejector assembly 9 includes a movable groove 901 formed inside the first lower mold 505 and the second lower mold 605. A second movable plate 902 is movably disposed inside the movable groove 901. Ejector springs 903 are mounted on the top of the second movable plate 902. The two ejector springs 903 respectively penetrate into the inner cavities of the first lower mold 507 and the second lower mold 607. The tops of the two ejector springs 903 respectively engage with the bottom walls of the inner cavities of the first lower mold 507 and the second lower mold 607. The second movable plate 902... The top of the device is provided with a push rod 904, the top of which is fixedly connected to the inner top wall of the movable groove 901. The bottom of the second movable plate 902 is provided with a second magnetic block 905, and the inner bottom wall of the movable groove 901 is provided with a second electromagnet 906. The second electromagnet 906 is magnetically connected to the second magnetic block 905. When the second electromagnet 906 is activated, it will drive the second movable plate 902 to move upward by means of the magnetic repulsion force on the second magnetic block 905, thereby driving the push rod 904 to move upward and pushing out the U-shaped locking pin, thus improving the stability of material feeding.

[0060] In use, when producing U-shaped locking pins, the required round bars are placed sequentially inside the material storage trough 403. Under the limitation of the side wall of the material storage trough 403, the round bars are placed longitudinally in sequence, with the lowest round bar located at the top of the push plate 408. During feeding, the feeding cylinder 409 drives the push plate 408 to move away from the workstation frame 3, so that the push plate 408 moves to the outside of the material storage trough 403. Since the round bars are not supported by the push plate 408, they move downwards, causing the lowest round bar to fall into the side of the push plate 408 closer to the workstation frame 3. Then, the push plate 408 moves towards the workstation frame 3, pushing the round bars to the top of the material plate 405. Then, the output end of the clamping cylinder 807 located above the material plate 405 moves downwards, causing the transport gripper 808 to move downwards to clamp the round bars that have completed feeding. Then, the push plate 408 moves back to its original position.

[0061] In the initial stage, the first electromagnet 81013 is energized, generating a repulsive force on the first magnetic block 81012, causing the positioning rod 81010 to engage with one of the positioning holes 81014 on the annular rotating plate 806, thus positioning the annular rotating plate 806. After the raw material is fed, the first electromagnet 81013 is de-energized, causing the positioning rod 81010 to move upward under the action of the positioning spring 81011, thus disengaging the positioning rod 81010 from the annular rotating plate 806.

[0062] The rotating motor 8096 is turned on, causing the gear 8095 to rotate. Since the gear 8095 meshes with the tooth groove 8093 on the inner side of the annular rotating plate 806, it drives the annular rotating plate 806 to rotate. After the annular rotating plate 806 rotates 90 degrees clockwise, the rotating motor 8096 is de-energized and stops. Then, the first electromagnet 81013 is re-energized, causing the positioning rod 81010 to insert into the positioning hole 81014 on the lower annular rotating plate 806, thereby positioning the annular rotating plate 806. At this time, the transport jaw 808 holding the round bar moves to above the first lower die 507 located on the workstation frame 3, and then the clamping cylinder 807 is activated. The transport gripper 808 is moved downwards, placing the round bar onto the first lower die 507. Then, the forming motor 504 is turned on, causing the forming screw 503 to rotate. Since the forming screw 503 is threadedly connected to the forming slider 506, it drives the first lower die 507 to move onto the first workstation seat 501. When it moves to the limit position, the forming motor 504 is de-energized and self-locked, fixing the first lower die 507. At this time, the first lower die 507 moves to the bottom of the first upper die 508. After the forming cylinder 509 is turned on, the first upper die 508 moves downwards, pressing the round bar into the first lower die 507, thereby pressing the raw material bar into a U-shape.

[0063] After the U-shaped locking pin is formed, the forming motor 504 is supplied with reverse current, causing the first lower mold 507 to move back to the top of the workstation frame 3. At this time, the second electromagnet 906 in the first lower seat 505 is energized and generates a repulsive force on the second magnetic block 905, pushing the ejector spring 903 to move upward and pushing the U-shaped locking pin inside the first lower mold 507 upward to a certain height. Then the clamping cylinder 807 works, causing the transport gripper 808 to move downward to clamp the U-shaped locking pin on the first lower mold 507.

[0064] Subsequently, the first electromagnet 81013 unlocks the annular rotating plate 806, and the rotating motor 8096 is turned on, causing the annular rotating plate 806 to rotate 90 degrees again. After the rotation is completed, the first electromagnet 81013 is energized to lock the annular rotating plate 806. At this time, the second lower mold 607 is located on the workstation frame 3, causing the U-shaped locking pin to move above the second lower mold 607. The clamping cylinder 807 moves downward to put the U-shaped locking pin into the second lower mold 607. The calibration motor 604 is turned on, causing the calibration screw 603 to rotate. Since the calibration screw 603 is threadedly connected to the calibration slider 606, it drives the second lower mold 607 to move onto the second workstation seat 601. When it moves to the limit position, the second lower mold 607 is located below the second upper mold 608. The second workstation seat 601 is de-energized and self-locks, fixing the second lower mold 607. The calibration cylinder 609 is turned on, causing the second upper mold 608 to move downward to calibrate the U-shaped locking pin.

[0065] After calibration, the calibration motor 604 is supplied with reverse current, causing the second lower mold 607 to move back to the top of the workstation frame 3. The second electromagnet 906 in the second lower seat 605 is energized and generates a repulsive force on the second magnetic block 905, pushing the ejector spring 903 to move upward and pushing the U-shaped locking pin inside the second lower mold 607 upward to a certain height. Then the clamping cylinder 807 works, causing the transport gripper 808 to move downward and clamp the U-shaped locking pin on the second lower mold 607.

[0066] Then, the first electromagnet 81013 unlocks the annular rotating plate 806, and the rotating motor 8096 is turned on, causing the annular rotating plate 806 to rotate 90 degrees again. This causes the transport gripper 808 to move with the U-shaped locking pin above the unloading slide plate 701. Then, the transport gripper 808 releases the U-shaped locking pin, causing the U-shaped locking pin to fall onto the unloading slide plate 701 and slide along the unloading slide plate 701 into the recycling bin 702, completing the forming production of one U-shaped locking pin. Since the feeding component 4, forming component 5, calibration component 6, and unloading component 7 are set at the top of the workstation frame 3, when the material enters from one workstation to the next workstation, the previous workstation can continue to work, improving work efficiency.

[0067] Example 2, by Figure 11 - Figure 12 As the volume of the round bar increases during actual pressing, when the forming cylinder 509 is activated and the first upper die 508 presses the round bar, the reaction force increases the counter-support force of the forming cylinder 509 on the top plate 802 and the side support plate 803. This causes the top plate 802 and the side support plate 803 to rotate around the central support column 801, reducing the pressing effect on the round bar. Furthermore, when the round bar undergoes pressing... When the U-shaped locking pin breaks, the first upper die 508 suddenly disengages from the U-shaped locking pin. Under the thrust applied by the forming cylinder 509, the top plate 802 and the side support plate 803 tilt downwards, causing damage to the U-shaped locking pin. At the same time, when calibrating the formed U-shaped locking pin, relying solely on the extrusion contact between the second upper die 608 and the U-shaped locking pin for detection results in low accuracy and poor effect. It is impossible to accurately and efficiently calibrate the forming accuracy of the U-shaped locking pin, thereby reducing the processing quality of the U-shaped locking pin.

[0068] To solve the above problems, the U-shaped locking pin forming and transporting mechanism further includes: a counterweight block 8081 is provided on the top of the transporting gripper 808, which counterweights the transporting gripper 808. The counterweight block 8081 counterweights the force exerted on the U-shaped locking pin by the first upper mold 508 and the second upper mold 608, and neutralizes the counterweight in the opposite direction, thereby ensuring that the side support plate 803 is in a stable horizontal state.

[0069] The bottom of the positioning rod 81010 is equipped with a plumb rod 81015. The plumb rod 81015 is always in a vertical state. When the side support plate 803 tilts, it will cause the top positioning rod 81010 to tilt as well. However, the plumb rod 81015 remains in a vertical state under its own weight.

[0070] Multiple sets of connecting airbags 81016 are equidistantly arranged on the inner circumferential side of the positioning hole 81014. Each connecting airbag 81016 contains a distance sensor. Therefore, when the side support plate 803 tilts, it causes the positioning rod 81010 to tilt as well. The plumb rod 81015 at the bottom of the positioning rod 81010 remains vertical under its own weight, causing it to tilt relative to the positioning hole 81014. This plumb rod 81015 correspondingly compresses the connecting airbag 81016, reducing the distance value detected by the distance sensor inside the connecting airbag 81016 on that side. Multiple sets of inflatable airbags 81019 are equidistantly arranged on the inner circumferential side of the correction hole 81021. Connecting airbags 81016 and inflatable airbags 81019 in the same orientation are connected by a flexible hose 81018. The gas inside the connecting airbag 81016 flows along the flexible hose... 81018 enters the interior of the expansion airbag 81019. Specifically, the connecting airbag 81016 located on the right side of the plumb rod 81015 is connected to the expansion airbag 81019 on the right side of the clamping cylinder 807 via a hose 81018. The connecting airbag 81016 located at the front end of the plumb rod 81015 is connected to the expansion airbag 81019 at the front end of the clamping cylinder 807 via a hose 81018. Therefore, when the amount of gas inside the expansion airbag 81019 increases, it will drive the clamping cylinder 807 to move in the opposite direction. When the clamping cylinder 807 moves in the opposite direction, it will drive the counterweight 8081 to move in the opposite direction. As a result, the gap between the counterweight 8081 and the central support column 801 decreases, and the downward counterweight force applied by the counterweight 8081 to the bottom of the side support plate 803 and the annular rotating plate 806 decreases, further ensuring the stability of the device and the balance of the counterweight when pressing the round bar.

[0071] A connecting spring 81017 is provided on the inner wall of the connecting airbag 81016. The other end of the connecting spring 81017 is fixedly connected to the inner wall of the positioning hole 81014. The elastic force of the connecting spring 81017 ensures the elastic reset performance of the connecting airbag 81016. A reset spring 81020 is provided on the inner wall of the inflatable airbag 81019. The other end of the reset spring 81020 is fixedly connected to the inner wall of the correction hole 81021. The elastic force of the reset spring 81020 realizes the elastic reset performance of the inflatable airbag 81019. The outer wall of the inflatable airbag 81019 is fixedly connected to the outer wall of the clamping cylinder 807. When the internal distance of the inflatable airbag 81019 changes, the volume of the inflatable airbag 81019 changes, and the inflatable airbag 81019 drives the clamping cylinder 807 to move inside the correction hole 81021.

[0072] In use, as shown above, the feeding cylinder 409 is activated to push out the material plate 405. The round bar material inside the material placement groove 403 is discharged along the discharge groove 404. The transport gripper 808 clamps the round bar material and moves it to the top of the first lower seat 505. The drive unit 809 is activated and drives the top box 8108 to move to the maximum distance. The positioning rod 81010 matches the positioning hole 81014. At this time, the first electromagnet 81013 is de-energized, and the magnetic attraction of the first electromagnet 81013 to the first magnetic block 81012 disappears. Then, under the elastic force of the positioning spring 81011, the first movable plate 8109 is driven to move downward to the maximum distance. The first movable plate 8109 drives the bottom plumb rod 81015 to insert into the positioning hole 81014 for positioning, thereby improving the positional accuracy of subsequent processes.

[0073] The forming motor 504 starts and drives the forming screw 503 to rotate. The forming screw 503 is threadedly engaged with the forming slider 506 and drives the first lower seat 505 to move to the bottom of the first upper mold 508. The forming cylinder 509 starts and drives the first upper mold 508 at the bottom to move downward. The first upper mold 508 and the round bar material are pressed and contacted with each other, so that the round bar material and the first lower mold 507 are pressed and matched with each other, thereby pressing the round bar material into the required U-shaped locking pin.

[0074] During the pressing process, when the first upper die 508 applies a force to the top of the round bar and causes it to bend, according to the action and reaction forces, the round bar exerts an upward force on the side support plate 803 through the first upper die 508 and the forming cylinder 509. The side support plate 803 then tilts around the central support column 801 with the help of the top plate 802. At the same time, the other side support plate 803 tilts downwards. The side support plate 803 drives the top box 8108 and the positioning rod 81010 to tilt synchronously. However, since the plumb rod 81015 is always in a vertical state, it moves relative to the end away from the top plate 802 inside the positioning hole 81014, that is, it moves to the right. The plumb rod 81015 squeezes the connecting air bladder 81016 on the right side. Under the pressure, the gas inside the connecting air bladder 81016 moves along the hose 81018 to the right side of the clamping cylinder 807. Inside the inflatable airbag 81019, the distance value detected by the distance sensor inside the connecting airbag 81016 on this side decreases accordingly. As a result, the volume of the inflatable airbag 81019 on the right increases, causing the clamping cylinder 807 to move to the left. The clamping cylinder 807 causes the bottom transport gripper 808 and the counterweight 8081 to move to the left. The distance between the counterweight 8081 and the central support column 801 decreases, so the torque applied by the counterweight 8081 on the side support plate 803 on the right decreases, while the downward torque applied by the counterweight 8081 on the side support plate 803 on the left remains unchanged. Correspondingly, the extrusion force applied to the round bar by the first upper die 508 through the left counterweight 8081 increases, thereby improving the pressing and forming effect of the round bar. This prevents the side support plate 803 from tilting upward under the action of the reaction force when the first upper die 508 and the round bar are extruded, thereby improving the horizontal stability and durability of the device.

[0075] After the first upper die 508 completes the pressing and forming of the round bar, the first upper die 508 separates from the round bar. The round bar disappears under the upward force exerted by the first upper die 508 on the side support plate 803, and the side support plate 803 returns to horizontal. The plumb rod 81015 returns to vertical under its own gravity. The squeezing force exerted by the plumb rod 81015 on the right connecting airbag 81016 decreases. Under the elastic force of the connecting spring 81017 and the return spring 81020, the gas inside the right expansion airbag 81019 flows in the reverse direction along the hose 81018 to the inside of the connecting airbag 81016. The distance value detected by the distance sensor returns to the initial value, and the corresponding clamping cylinder 807 returns to the initial position.

[0076] When the first upper die 508 applies extrusion pressure to the round bar, if the round bar suddenly breaks, the bottom of the first upper die 508 suddenly loses extrusion pressure. Under the action of the forming cylinder 509, the left side of the side support plate 803 tilts downward. Through the hinge of the top plate 802 and the middle support column 801, the right side of the side support plate 803 tilts upward. Then, the plumb rod 81015 moves to the left inside the positioning hole 81014. The plumb rod 81015 then compresses the left connecting air bladder 81016, and the air inside the left connecting air bladder 81016... The body enters the left-side inflatable airbag 81019 through the hose 81018. The distance value detected by the distance sensor on the left decreases, the volume of the left-side inflatable airbag 81019 increases, and it drives the clamping cylinder 807 to move to the right. The clamping cylinder 807 drives the bottom transport gripper 808 and the counterweight 8081 to move to the right. As a result, the downward torque exerted by the counterweight 8081 on the right side of the side support plate 803 increases, thereby effectively counteracting the force on the left side of the side support plate 803 and ensuring that the side support plate 803 is always in a horizontal and stable state.

[0077] After the round bar is pressed and formed, the ejector assembly 9 ejects the pressed U-shaped locking pin along the first lower die 507. The positioning rod 81010 drives the plumb rod 81015 to disengage from the positioning hole 81014. At the same time, the transport gripper 808 clamps and fixes the pressed U-shaped locking pin. The annular rotating plate 806 continues to rotate and drives the U-shaped locking pin to the top of the second lower die 607. The above process is repeated to insert the positioning rod 81010 and plumb rod 81015 into the positioning hole 81014 for positioning. The calibration cylinder 609 is started and drives the second upper die 608 to move downward a certain distance. This distance is related to the standard size of the U-shaped locking pin. That is, the U-shaped locking pin is calibrated by the standard size. If the U-shaped locking pin meets the size requirements, the second upper die 608 and the bottom match the U-shaped locking pin. The second upper die 608 will not exert force on the front side of the side support plate 803 in the opposite direction. The side support plate 803 is still in a stable horizontal state.

[0078] When the U-shaped locking pin protrudes upwards, and the second upper mold 608 and the U-shaped locking pin press against each other for calibration, the bottom of the second upper mold 608 is subjected to the pressing force of the protruding top of the U-shaped locking pin and rotates upwards at a hinge. Correspondingly, the front side of the side support plate 803 tilts upwards, and the side support plate 803 tilts around the central support column 801 via the top plate 802. The plumb rod 81015 is vertical inside the positioning hole 81014 and tilts backwards. At this time, the plumb rod 81015 presses against the rear connecting airbag 81016. The gas inside the connecting airbag 81016 enters the expansion airbag 810 located behind the clamping cylinder 807 via the hose 81018. Inside 19, the volume of the inflatable airbag 81019 increases, causing the clamping cylinder 807 and the bottom counterweight 8081 to move forward, thereby further improving the stability and levelness of the side support plate 803 under downward action. At the same time, the distance value detected by the rear distance sensor decreases, and the tilt angle of the plumb rod 81015 is indirectly obtained through the distance sensor, and the corresponding height of the U-shaped locking pin is obtained. When the distance value detected by the rear distance sensor decreases to the set minimum distance value, it indicates that the processing of the U-shaped locking pin does not meet the requirements, and the above process needs to be repeated for secondary pressing and forming.

[0079] Simultaneously, if the U-shaped locking pin is over-pressed during the above process due to its material properties, when the second upper mold 608 moves downward to a suitable height, the bottom of the second upper mold 608 cannot contact the top of the U-shaped locking pin, and a gap exists between them. Correspondingly, under the counterweight action of the front counterweight block 8081, the side support plate 803 tilts forward, and the plumb rod 81015 inside the positioning hole 81014 presses against the front connecting airbag 81016. The gas inside the front connecting airbag 81016 enters the front expansion airbag 81019 along the hose 81018. The expansion of the airbag 81019 increases its volume and drives the clamping cylinder 807 to move rearward. The clamping cylinder 807 then drives the bottom counterweight 8081 to move rearward, thereby balancing and correcting the side support plate 803 and ensuring that the side support plate 803 is always in a horizontal and stable state. At the same time, the distance value detected by the distance sensor on the front side decreases, and the corresponding degree of indentation of the U-shaped locking pin is determined according to this decrease. If the distance value detected by the distance sensor on the front side is less than the preset distance value, it indicates that the indentation of the U-shaped locking pin is too large and it is a defective product that needs to be removed and reprocessed and pressed.

[0080] After the U-shaped locking pin is calibrated, the above process is repeated to disengage the positioning rod 81010 and the plumb rod 81015 from the positioning rod 81010. The U-shaped locking pin is then ejected by the ejector assembly 9 and transferred to the unloading assembly 7 by the transport gripper 808 for unloading, thus completing the entire U-shaped locking pin processing process. The above process can be repeated continuously to form and transport subsequent U-shaped locking pins.

[0081] This device can sequentially perform feeding, pressing, calibration, and unloading of round bars. It has high efficiency and good effect in forming and handling U-shaped locking pins, meeting the actual processing and production needs of different round bars. It is simple to operate, stable, and efficient. Furthermore, when pressing round bars, the position of the counterweight 8081 on the right side can be adjusted accordingly to ensure that the side support plate 803 is always in a horizontal state, further improving stability and durability. At the same time, when calibrating U-shaped locking pins, the detection accuracy can be improved according to the distance sensor, making it more adaptable and with better detection results.

[0082] Example 3: A method for transporting a U-shaped locking pin during forming. The method uses a U-shaped locking pin forming and transporting mechanism to transport the U-shaped locking pin, and the transporting steps are as follows:

[0083] S1. Four transport grippers 808 are located above the loading assembly 4, forming assembly 5, calibration assembly 6, and unloading assembly 7 respectively. The transport grippers 808 move to pick up the round bar material.

[0084] S2. The annular rotating plate 806 rotates 90 degrees clockwise, and the round bar moves to the top of the forming component 5 for pressing and forming. The side support plate 803 tilts and drives the plumb rod 81015 to tilt and squeeze the connecting airbag 81016 inside the positioning hole 81014. The gas inside the connecting airbag 81016 enters the inflatable airbag 81019 through the hose 81018. The inflatable airbag 81019 drives the clamping cylinder 807 and the counterweight 8081 to move in the opposite direction and balance the side support plate 803.

[0085] S3. The annular rotating plate 806 rotates 90 degrees clockwise again, and the transport gripper 808 brings the U-shaped locking pin to the calibration component 6. When the U-shaped locking pin is unqualified, the U-shaped locking pin drives the side support plate 803 to tilt through the calibration component 6. The plumb rod 81015 tilts and squeezes the connecting airbag 81016 inside the positioning hole 81014. The gas inside the connecting airbag 81016 enters the inflatable airbag 81019 through the hose 81018. The inflatable airbag 81019 drives the clamping cylinder 807 and the counterweight 8081 to move in the opposite direction and balance the side support plate 803. The distance value detected by the distance sensor decreases.

[0086] S4. The annular rotating plate 806 rotates 90 degrees clockwise again, causing the transport gripper 808 to rotate with the formed U-shaped locking pin to the unloading assembly 7 for unloading.

[0087] By further defining the handling method, the processing efficiency and accuracy of the U-shaped locking pin are improved, ensuring the levelness and stability of the side support plate 803.

[0088] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A U-shaped locking pin forming and conveying mechanism, comprising a base, characterized in that: The base has a support column at its top, a workstation frame at its top, a feeding component on one side of the workstation frame, a forming component, a calibration component, and a unloading component on the workstation frame, and a conveying component at its top. The conveying assembly includes a central support column, a top plate hinged to the top of the central support column, side support plates at equal angles on the outer side of the top plate, annular support plates on the outer side of the side support plates, annular grooves at the top of the annular support plates, annular rotating plates rotatably mounted on the annular grooves, four sets of correction holes at equal angles on the annular rotating plates, clamping cylinders inside the correction holes, conveying grippers at the output end of the clamping cylinders, counterweights at the top of the conveying grippers, and a positioning unit at the top of one of the side support plates. The positioning unit includes a movable platform, a movable frame above the movable platform, a top box at the top of the movable frame, a first movable plate movably disposed inside the top box, a positioning rod at the bottom of the first movable plate, and a plumb rod at the bottom of the positioning rod. Four sets of positioning holes are equally spaced on the annular rotating plate. Multiple sets of connecting airbags are equally spaced on the inner circumferential side of the positioning holes. Each connecting airbag is equipped with a distance sensor. Multiple sets of inflatable airbags are equally spaced on the inner circumferential side of the correction hole. Each correction hole is connected to the connecting airbag and inflatable airbag located in the same direction in the nearest positioning hole through a flexible tube. The forming component is located 90 degrees clockwise from the feeding component, the calibration component is located on the opposite side of the feeding component, and the unloading component is located 90 degrees counterclockwise from the feeding component. There are four side support plates, and the directions of the four side support plates correspond to the directions of the feeding assembly, forming assembly, calibration assembly, and unloading assembly, respectively.

2. The U-shaped locking pin forming and conveying mechanism according to claim 1, characterized in that: The workstation frame is arranged in a ring shape, with a central support pillar located on the inner side of the workstation frame. The central support pillar is coaxial with the workstation frame. The inner wall of the connecting airbag is equipped with a connecting spring, and the other end of the connecting spring is fixedly connected to the inner wall of the positioning hole. The inner wall of the inflated airbag is equipped with a return spring, and the other end of the return spring is fixedly connected to the inner wall of the correction hole. The outer walls of the inflated airbags are all fixedly connected to the outer walls of the clamping cylinders. The annular rotating plate is located above the workstation frame, and four transport grippers are provided.

3. The U-shaped locking pin forming and conveying mechanism according to claim 1, characterized in that: A driving unit is provided between the annular rotating plate and the annular support plate. The driving unit includes a limiting annular groove opened on the bottom wall of the annular groove. A limiting rotating ring is provided at the top of the annular rotating plate. The limiting rotating ring is rotatably installed inside the limiting annular groove. The inner side of the annular rotating plate is evenly provided with toothed grooves. The inner side of the annular support plate is provided with a connecting groove. The connecting groove is connected to the annular groove. A gear is provided inside the connecting groove. The gear meshes with the limiting rotating ring. The gear is fixedly connected to the output shaft of the rotating motor. The rotating motor is fixedly installed on the motor mounting bracket. The motor mounting bracket is fixedly installed on the central support column.

4. The U-shaped locking pin forming and conveying mechanism according to claim 1, characterized in that: Two limiting rollers are symmetrically arranged at the bottom of the movable frame near the annular rotating plate. A positioning rod is located between the two limiting rollers. A positioning spring is provided at the bottom of the first movable plate. A first magnetic block is provided at the top of the first movable plate. A first electromagnet is provided at the top of the top box. The first electromagnet is magnetically connected to the first magnetic block. A slide is provided at the end of the movable frame away from the annular rotating plate. A side groove is opened at the top of the movable platform. The slide is slidably connected to the side groove. A positioning screw is rotatably provided at the end of the side groove. The positioning screw is threadedly connected to the slide. One end of the positioning screw is fixedly connected to the output shaft of the positioning motor. The positioning motor is fixedly installed on the movable platform.

5. The U-shaped locking pin forming and conveying mechanism according to claim 1, characterized in that: The feeding assembly includes a material box installed on one side of the workstation frame. A fixing frame is provided on the side of the material box near the workstation frame, and the fixing frame is fixedly connected to the side wall of the workstation frame. A material placement groove is opened inside the material box. A discharge groove is opened at the bottom of the material placement groove on the side near the workstation frame. The discharge groove passes through the side of the material box near the workstation frame. A material plate is provided on the side of the material box near the workstation frame. The material plate extends to the top of the workstation frame. The top wall of the material plate is flush with the bottom wall of the discharge groove. A limiting plate is provided at the top of the end of the material plate away from the material box. A plate box is provided on the side of the material box away from the workstation frame. A push plate is movably provided inside the plate box. One end of the push plate enters the interior of the discharge groove. The other end of the push plate is fixedly connected to the output end of the feeding cylinder. The feeding cylinder is fixedly installed on the side of the plate box away from the material box.

6. The U-shaped locking pin forming and conveying mechanism according to claim 1, characterized in that: The forming assembly includes a first workstation seat installed on the side of the workstation frame near the central support column. The first workstation seat is located at a 90-degree clockwise direction from the feeding assembly. A forming groove is provided at the top of the first workstation seat, extending through the workstation frame. A forming screw is rotatably provided at the end of the forming groove. One end of the forming screw is fixedly connected to the output shaft of the forming motor. The forming motor is fixedly installed on the first workstation seat. A first lower seat is provided above the first workstation seat. A forming slider is provided at the bottom of the first lower seat. The forming slider is slidably connected to the forming groove and threadedly connected to the forming screw. A first lower mold is provided at the top of the first lower seat. The first workstation seat is located below one of the side support plates. A first upper mold is provided below the side support plates. The first upper mold is fixedly connected to the output end of the forming cylinder. The forming cylinder is fixedly installed above the side support plates. The first upper mold is located above the first lower mold.

7. The U-shaped locking pin forming and conveying mechanism according to claim 6, characterized in that: The calibration assembly includes a second workstation seat installed on the side of the workstation frame near the central support column. The second workstation seat is located on the opposite side of the feeding assembly relative to the central support column. A calibration groove is provided at the top of the second workstation seat, extending through the workstation frame. A calibration screw is rotatably provided at the end of the calibration groove. One end of the calibration screw is fixedly connected to the output shaft of the calibration motor, which is fixedly installed on the second workstation seat. A second lower seat is provided above the second workstation seat, and a calibration slider is provided at the bottom of the second lower seat. The calibration slider is slidably connected to the calibration groove and threadedly connected to the calibration screw. A second lower mold is provided at the top of the second lower seat. The second workstation seat is located below another side support plate, and a second upper mold is provided below the side support plate. The second upper mold is fixedly connected to the output end of the calibration cylinder, which is fixedly installed above the side support plate. The second upper mold is located above the second lower mold. Ejector assemblies are provided inside both the first and second lower seats.

8. The U-shaped locking pin forming and conveying mechanism according to claim 1, characterized in that: The unloading assembly includes a recycling bin located on the side of the workstation frame away from the central support column. The height of the recycling bin is lower than the height of the workstation frame. The side of the recycling bin closest to the workstation frame is provided with a unloading slide plate. The unloading slide plate is inclined upward toward one end of the workstation frame. One end of the unloading slide plate is located above the workstation frame and is fixedly installed with the workstation frame. The unloading slide plate is located at a counterclockwise 90-degree angle to the loading assembly.

9. The U-shaped locking pin forming and conveying mechanism according to claim 7, characterized in that: The ejector assembly includes a movable groove formed inside the first lower mold and the second lower mold. A second movable plate is movably mounted inside the movable groove. An ejector spring is mounted at the top of the second movable plate. Two ejector springs pass through the inner cavities of the first lower mold and the second lower mold, respectively. The tops of the two ejector springs are respectively engaged with the bottom walls of the inner cavities of the first lower mold and the second lower mold. An ejector rod is mounted at the top of the second movable plate. The top of the ejector rod is fixedly connected to the inner top wall of the movable groove. A second magnetic block is mounted at the bottom of the second movable plate. A second electromagnet is mounted on the inner bottom wall of the movable groove. The second electromagnet is magnetically connected to the second magnetic block.

10. A method for transporting a U-shaped locking pin during forming, wherein the method, according to claim 1, uses a U-shaped locking pin forming and transporting mechanism to transport the U-shaped locking pin, characterized in that... The handling steps are as follows: S1. The four transport grippers are located above the loading assembly, forming assembly, calibration assembly, and unloading assembly, respectively. The transport grippers move to pick up the round bar material. S2. The annular rotating plate rotates 90 degrees clockwise, and the round bar moves to the top of the forming component for pressing and forming. The side support plate tilts and drives the plumb rod to tilt and squeeze the connecting airbag inside the positioning hole. The gas inside the connecting airbag enters the expansion airbag through the hose. The expansion airbag drives the clamping cylinder and the counterweight to move in the opposite direction and balance the side support plate. S3. The annular rotating plate rotates 90 degrees clockwise again, and the transport gripper brings the U-shaped locking pin to the calibration component. When the U-shaped locking pin is not qualified, the U-shaped locking pin drives the side support plate to tilt through the calibration component. The plumb rod tilts and squeezes the connecting airbag inside the positioning hole. The gas inside the connecting airbag enters the inflating airbag through the hose. The inflating airbag drives the clamping cylinder and the counterweight to move in the opposite direction and balance the side support plate. The distance value detected by the distance sensor decreases. S4. The annular rotating plate rotates 90 degrees clockwise again, causing the transport gripper to rotate with the formed U-shaped locking pin to the unloading assembly for unloading.

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