A large-sized dihedral workpiece flipping device

Abstract

A large-sized dihedral workpiece flipping device, comprising: two lifting mechanisms; a flipping mechanism and a single pin mechanism, which are respectively installed on the two lifting mechanisms; a double pin mechanism, which is installed on the flipping mechanism; a flipping die carrier for clamping the dihedral workpiece, including a die carrier main body, two mounting brackets, a lifting type angle adjusting mechanism, a synchronous driving mechanism, a first clamping mechanism, a second clamping mechanism and a support frame. The device uses a double pin mechanism on the side where the flipping mechanism is located to drive the flipping die carrier to flip, and uses a single pin mechanism on the opposite side as a fulcrum to assist in flipping. When performing the flipping operation of an eccentric dihedral workpiece, the stability and safety are ensured; it can be combined with various logistics equipment to realize automatic loading and unloading and assembly line production; by adopting the method of first lifting the flipping die carrier and then flipping, damage-free flipping is realized, ensuring production safety; the flipping die carrier can clamp dihedral workpieces with different angles and different sizes, and has good versatility.

Description

Technical Field

[0001] The present invention belongs to the field of shipbuilding, relates to the manufacture of heat insulation and insulation layers, and particularly relates to a large-sized dihedral workpiece flipping device. Background Art

[0002] Two layers of heat insulation and insulation layers need to be laid inside the cargo hold of an LNG (Liquefied Natural Gas) ship to ensure an absolute low temperature environment of minus 163 °C inside the hold. The heat insulation and insulation layer in the MARK III type thin film type containment system consists of modular polyurethane plates. Among them, the dihedral workpiece installed in the corner area is formed by bonding an FSB arranged on the back of the sub-layer part, the sub-layer part composed of two single leg plates, the FSB arranged on the front of the sub-layer part, and the main layer part. The FSB is a cloth or film made of a composite waterproof material. In different processes of forming the dihedral workpiece, the dihedral workpiece has both a placement posture with the front side facing up and a placement posture with the back side facing up. Therefore, a special flipping device is required to flip the dihedral workpiece.

[0003] At present, the flipping of the dihedral workpiece is realized through a flipping device. The dihedral workpiece is clamped on the flipping die holder of the flipping device, and the flipping die holder is driven by the flipping mechanism of the flipping device to flip. However, due to the large size of the dihedral workpiece and various specifications, the included angles of different specifications of dihedral workpieces are different, and the lengths of both sides of the included angle are not exactly the same, with eccentricity. Currently, there is a lack of a flipping die holder that can clamp dihedral workpieces of various specifications. The flipping die holder is fixedly connected to the flipping mechanism, and the flipped dihedral workpiece needs to be disassembled and then installed on the corresponding forming die, resulting in low efficiency. In addition, in order to improve production efficiency, it is best to directly flip the dihedral workpiece on the conveyor line. However, currently, the flipping die holder clamped with the dihedral workpiece may collide with the conveyor line during the flipping process, affecting production safety. Summary of the Invention

[0004] The present invention is made to solve the above problems, and the purpose is to provide a large-sized dihedral workpiece flipping device.

[0005] The present invention provides a large-sized dihedral workpiece flipping device, which has the following characteristics: including two lifting mechanisms arranged symmetrically; a flipping mechanism installed on one lifting mechanism and driven by it to lift; a double pin mechanism installed on the flipping mechanism and driven by it to flip on the vertical plane, the double pin mechanism is horizontally oriented towards the side where the single pin mechanism is located; a single pin mechanism installed on the other lifting mechanism and driven by it to lift, the single pin mechanism is horizontally oriented towards the side where the double pin mechanism is located; and a flipping die holder for clamping the dihedral workpiece, including a die holder main body, two mounting brackets, multiple lifting angle adjustment mechanisms, a synchronous drive mechanism, two first clamping mechanisms, two second clamping mechanisms, and multiple support frames. The two ends of the die holder main body are detachably connected to the double pin mechanism and the single pin mechanism respectively. The two mounting brackets are symmetrically arranged on both sides of the die holder main body. The adjacent sides of the two mounting brackets are respectively hinged to the bottom of the die holder main body. The multiple lifting angle adjustment mechanisms are installed on the die holder main body at intervals along the length direction. Each lifting angle adjustment mechanism is connected to the two mounting brackets and is used to adjust the included angle between the two mounting brackets. The synchronous drive mechanism is installed on the die holder main body and connected to the multiple lifting angle adjustment mechanisms to synchronously drive the multiple lifting angle adjustment mechanisms to work. The two first clamping mechanisms are symmetrically installed on the two mounting brackets and are arranged at one end in the length direction. Each first clamping mechanism is adjustable and movable in the width direction of the mounting bracket where it is located. The two second clamping mechanisms are symmetrically installed on the two mounting brackets. Each second clamping mechanism is adjustable and movable in both the length direction and the width direction of the mounting bracket where it is located. The multiple support frames are installed on the top surface of the die holder main body at intervals along the length direction.

[0006] In the large-sized dihedral workpiece flipping device provided by the present invention, it may also have the following characteristics: each lifting mechanism includes two columns, two linear guide rails, a gear-rack assembly, a lifting seat, and a lifting motor. The two columns are arranged at intervals. The slide rails of the two linear guide rails are respectively installed on the sides of the two columns. The gear-rack assembly includes a meshing gear and a rack. The rack is installed on the side of one column. The lifting seat is installed across the sliders of the two linear guide rails. The lifting motor is installed on the lifting seat, and a gear is installed on the output shaft of the lifting motor.

[0007] In the large-sized dihedral workpiece flipping device provided by the present invention, it may also have the following characteristics: the flipping mechanism includes a flipping motor, a chain drive assembly, a flipping shaft, and a bushing. The chain drive assembly includes a connected driving sprocket, a driven sprocket, and a chain. The flipping motor is installed on the lifting mechanism. The output shaft of the flipping motor is horizontally arranged and a driving sprocket is installed thereon. The flipping shaft is installed on the lifting mechanism through the bushing. The flipping shaft is parallel to the output shaft of the flipping motor and a driven sprocket is installed thereon.

[0008] In the large-sized dihedral workpiece flipping device provided by the present invention, it may further have the following features: The double pin mechanism includes a first mounting seat, two first cylinders, two first pins, and two first pin seats. The first mounting seat is mounted on the flipping shaft. The two first cylinders are both mounted on the first mounting seat and are symmetrically arranged with respect to the axis of the flipping shaft. The piston rods of the two first cylinders are both horizontally oriented towards the side where the single pin mechanism is located and are respectively coaxially connected to the two first pins. The first pin is a two-stage structure composed of a circular shaft section and a square shaft section. One end of the corresponding square shaft section of the first pin is connected to the piston end of the first cylinder. The two first pin seats are both mounted on the first mounting seat and are respectively arranged corresponding to the two first cylinders. Each first pin seat has a square through hole for the first pin to slide and matching the square shaft section. One end of the die holder body is provided with two first pin sleeves corresponding to the two first pins, and each first pin sleeve has a square hole matching the first pin.

[0009] In the large-sized dihedral workpiece flipping device provided by the present invention, it may further have the following features: The single pin mechanism includes a second mounting seat, a second cylinder, a second pin, and a second pin seat. The second mounting seat is mounted on the lifting mechanism. The second cylinder is mounted on the second mounting seat. The piston rod of the second cylinder is horizontally oriented towards the side where the double pin mechanism is located and is coaxially connected to the second pin. The second pin is coaxially arranged with the flipping shaft. The second pin is a two-stage structure composed of a circular shaft section and a square shaft section. One end of the corresponding square shaft section of the second pin is connected to the piston end of the second cylinder. The second pin seat is mounted on the second mounting seat. The second pin seat has a square through hole for the second pin to slide and matching the square shaft section. The other end of the die holder body is provided with a second pin sleeve corresponding to the second pin, and the second pin sleeve has a square hole matching the second pin.

[0010] In the large-sized dihedral workpiece flipping device provided by the present invention, it may further have the following features: Each lifting type angle adjusting mechanism includes a lifting mechanism, a lifting slider, and two connecting rods. The lifting mechanism is mounted on the die holder body. The lifting slider is connected to the lifting mechanism and is driven by the lifting mechanism to lift and lower. One ends of the two connecting rods are respectively hinged to both sides of the lifting slider, and the other ends of the two connecting rods are respectively hinged to the two mounting brackets.

[0011] In the large-sized dihedral workpiece flipping device provided by the present invention, it may further have the following features: The lifting mechanism is a worm gear screw jack; The synchronous drive mechanism includes multiple synchronous shafts and a handle. Each adjacent two lifting mechanisms are connected by a synchronous shaft. The handle is connected to the lifting mechanism at the outermost end through a synchronous shaft, and a clamping member is provided on the synchronous shaft connected to the handle.

[0012] In the large-sized dihedral workpiece turning device provided by the present invention, it may further have the following characteristics: Each first clamping mechanism includes a first clamping seat and a first Y-axis adjustment mechanism. A jack for connecting the dihedral workpiece in cooperation with the insertion rod is provided on the first clamping seat. The first Y-axis adjustment mechanism is used to adjust the position of the first clamping seat in the width direction of the mounting frame where it is located. The first Y-axis adjustment mechanism includes a first Y-axis linear guide rail and a first Y-axis screw mechanism. The slide rail of the first Y-axis linear guide rail is installed on the bottom surface of the mounting frame, and the first clamping seat is installed on the slider of the first Y-axis linear guide rail. The screw of the first Y-axis screw mechanism is a trapezoidal screw, the screw seat of the first Y-axis screw mechanism is installed on the mounting frame, and the nut of the first Y-axis screw mechanism is connected to the first clamping seat.

[0013] In the large-sized dihedral workpiece turning device provided by the present invention, it may further have the following characteristics: Each second clamping mechanism includes a second clamping seat, an X-axis adjustment mechanism, and a second Y-axis adjustment mechanism. A jack for connecting the dihedral workpiece in cooperation with the insertion rod is provided on the second clamping seat. The X-axis adjustment mechanism is used to adjust the position of the second clamping seat in the length direction of the mounting frame where it is located. The X-axis adjustment mechanism includes an X-axis linear guide rail and a clamp. The slide rail of the X-axis linear guide rail is installed on the bottom surface of the mounting frame, and the clamp is installed on the slide rail of the X-axis linear guide rail. The second Y-axis adjustment mechanism is used to adjust the position of the second clamping seat in the width direction of the mounting frame where it is located. The second Y-axis adjustment mechanism includes a Y-axis mounting seat, a second Y-axis linear guide rail, and a second Y-axis screw mechanism. The Y-axis mounting seat is installed on the slider of the X-axis linear guide rail and the clamp. The slide rail of the second Y-axis linear guide rail is installed on the Y-axis mounting seat, and the second clamping seat is installed on the slider of the second Y-axis linear guide rail. The screw of the second Y-axis screw mechanism is a trapezoidal screw, the screw seat of the second Y-axis screw mechanism is installed on the Y-axis mounting seat, and the nut of the second Y-axis screw mechanism is connected to the second clamping seat.

[0014] In the large-sized dihedral workpiece turning device provided by the present invention, it may further have the following characteristics: It further includes: a conveyor, arranged at the bottom of the two lifting mechanisms; and a pin hole for positioning is provided on each support frame.

[0015] Functions and effects of the invention

[0016] According to the large-sized dihedral workpiece flipping device involved in the present invention, since the double pin mechanism is adopted on the side where the flipping mechanism is located to drive the flipping die carrier to flip, and the single pin mechanism is adopted on the opposite side as a fulcrum to assist the flipping die carrier to flip, this device not only ensures the structural stability of the flipping die carrier when it is stationary, but also ensures the structural stability of the flipping die carrier when it is flipping. Especially when performing the flipping operation of an eccentric large-sized dihedral workpiece, the safety is guaranteed; because the lifting mechanism has a lifting function, and both ends of the flipping die carrier are detachably connected to the double pin mechanism and the single pin mechanism respectively, this device can be combined with various logistics equipment to transport the flipping die carrier on the conveyor line. The flipping of the dihedral workpiece can be directly carried out on the conveyor line, realizing automatic loading and unloading and production line production, improving the production efficiency. At the same time, because the flipping of the flipping die carrier is realized by the flipping mechanism driving the double pin mechanism to flip after the two lifting mechanisms lift the flipping die carrier, this device realizes the non-damaging flipping of large-sized dihedral workpieces, avoiding the collision between the flipping die carrier and the corner plate and the conveyor line during the flipping process, and ensuring the production safety; because the flipping die carrier adopts a synchronous drive mechanism to drive multiple lifting angle adjustment mechanisms to adjust the included angle between the two mounting brackets, and a first clamping mechanism and a second clamping mechanism are installed on each mounting bracket. The first clamping mechanism can be adjusted and moved in the width direction of the mounting bracket where it is located, and the second clamping mechanism can be adjusted and moved in both the length and width directions of the mounting bracket where it is located, so the flipping die carrier can effectively fix dihedral workpieces with different angles and different sizes, and this device can realize the flipping of dihedral workpieces with different angles, different sizes, especially eccentric dihedral workpieces; because multiple support frames are provided on the top surface of the mold body of the flipping die carrier, the flipping die carrier can be placed and supported by the support frames after flipping, avoiding side flipping and maintaining stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the large-sized dihedral workpiece flipping device in the embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the large-sized dihedral workpiece flipping device in the embodiment of the present invention after removing the flipping die carrier and the conveyor;

[0019] Figure 3 is a front view cross-sectional view of the large-sized dihedral workpiece flipping device in the embodiment of the present invention after removing the flipping die carrier and the conveyor;

[0020] Figure 4 is a top view cross-sectional view of the large-sized dihedral workpiece flipping device in the embodiment of the present invention after removing the flipping die carrier and the conveyor;

[0021] Figure 5 is a schematic structural diagram of the flipping die carrier before flipping in the embodiment of the present invention;

[0022] Figure 6 It is a schematic structural view of the flipping die carrier after flipping in an embodiment of the present invention;

[0023] Figure 7 is Figure 6 a partial enlarged view of part A in

[0024] Figure 8 It is a longitudinal sectional view of the flipped flipping die carrier at the second Y-axis adjustment mechanism in an embodiment of the present invention;

[0025] Figure 9 It is a schematic structural view when the large-size dihedral workpiece flipping device flips the flipping die carrier in an embodiment of the present invention.

[0026] Explanation of reference numerals:

[0027] 1 Dihedral workpiece; 2 Lower die; 3 Upper die base; 10 Lifting mechanism; 11 Column; 12 Linear guide rail; 13 Gear-rack assembly; 14 Lifting seat; 15 Lifting motor; 20 Flipping mechanism; 21 Flipping motor; 22 Chain drive assembly; 23 Flipping shaft; 24 Bushing; 30 Double-pin mechanism; 31 First mounting seat; 32 First cylinder; 33 First pin; 34 First pin seat; 40 Single-pin mechanism; 41 Second mounting seat; 42 Second cylinder; 43 Second pin; 44 Second pin seat; 50 Flipping die carrier; 51 Die carrier main body; 511 First pin sleeve; 52 Mounting frame; 53 Lifting type angle adjustment mechanism; 531 Worm gear and screw jack; 532 Lifting slider; 533 Link; 54 Synchronous drive mechanism; 541 Synchronous shaft; 542 Handle; 543 Clamping member; 55 First clamping mechanism; 551 First clamping seat; 5511 Jack; 552 First Y-axis linear guide rail; 553 First Y-axis screw mechanism; 56 Second clamping mechanism; 561 Second clamping seat; 562 X-axis linear guide rail; 563 Clamping device; 564 Y-axis mounting seat; 565 Second Y-axis linear guide rail; 566 Second Y-axis screw mechanism; 57 Support frame; 571 Pin hole; 60 Conveyor. Detailed implementation manners

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the following embodiments will specifically describe the present invention in conjunction with the accompanying drawings.

[0029] Embodiment

[0030] Figure 1 It is a schematic structural view of the large-size dihedral workpiece flipping device.

[0031] As Figure 1As shown in the figure, this embodiment provides a large-sized dihedral workpiece flipping device for flipping the dihedral workpiece 1, which mainly includes two lifting mechanisms 10, a flipping mechanism 20, a double pin mechanism 30, a single pin mechanism 40, and a flipping die carrier 50. The two lifting mechanisms 10 are symmetrically arranged. The flipping mechanism 20 is installed on one lifting mechanism 10 and is lifted by this lifting mechanism 10. The double pin mechanism 30 is installed on the flipping mechanism 20 and is flipped on the vertical plane by the flipping mechanism 20. The double pin mechanism 30 is horizontally oriented towards the side where the single pin mechanism 40 is located. The single pin mechanism 40 is installed on the other lifting mechanism 10 and is lifted by this lifting mechanism 10. The single pin mechanism 40 is horizontally oriented towards the side where the double pin mechanism 30 is located. The two ends of the flipping die carrier 50 are detachably connected to the double pin mechanism 30 and the single pin mechanism 40 respectively. The flipping die carrier 50 is used for clamping the dihedral workpiece 1. This large-sized dihedral workpiece flipping device may further include a conveyor 60. The conveyor 60 is arranged at the bottom of the two lifting mechanisms 10. The conveyor 60 is used for transporting the lower die 2 and the upper die used for forming the dihedral workpiece 1.

[0032] Figure 2 is a schematic structural view of the large-sized dihedral workpiece flipping device after removing the flipping die carrier 50 and the conveyor 60. Figure 3 is a front view cross-sectional view of the large-sized dihedral workpiece flipping device after removing the flipping die carrier 50 and the conveyor 60. Figure 4 is a top view cross-sectional view of the large-sized dihedral workpiece flipping device after removing the flipping die carrier 50 and the conveyor 60.

[0033] As Figures 2 to 4 shown, the two lifting mechanisms 10 are symmetrically arranged. Each lifting mechanism 10 includes a column 11, a linear guide rail 12, a gear-rack assembly 13, a lifting seat 14, and a lifting motor 15. Among them, the gear-rack assembly 13 includes a gear and a rack. As a transmission component, the gear-rack assembly 13 has the advantages of smooth and precise transmission. The slide rail of the linear guide rail 12 and the rack are both installed vertically on the side surface of the column 11. The lifting seat 14 is installed on the slider of the linear guide rail 12. The lifting motor 15 is installed on the lifting seat 14. A gear is installed on the output shaft of the lifting motor 15, and the gear meshes with the rack for transmission.

[0034] In this embodiment, the number of columns 11 of each lifting mechanism 10 is two. The two columns 11 can ensure the structural stability when the flipping mechanism operates. The two columns 11 are spaced apart and the slide rails of the linear guide rail 12 are installed on their side surfaces. The rack is installed on the side surface of one column 11. The lifting seat 14 is composed of several profiles and is installed across the sliders of the two linear guide rails 12. The lifting motor 15 is installed at the end of the lifting seat 14 corresponding to the rack. The lifting motor 15 is a servo motor, which can achieve precise control.

[0035] The flipping mechanism 20 is installed on the lifting seat 14 of a lifting mechanism 10 and is lifted by the lifting seat 14. The flipping mechanism 20 is used to drive the double pin mechanism 30 to flip, and further drive the flipping die holder 50 to flip. Specifically, the flipping mechanism 20 includes a flipping motor 21, a chain drive assembly 22, a flipping shaft 23, and a bushing 24. Among them, the chain drive assembly 22 includes a driving sprocket, a driven sprocket, and a chain. The chain drive assembly 22 has the advantages of high transmission efficiency and large transmission ratio, and is suitable for working conditions with low speed and heavy load. The flipping motor 21 is installed on the lifting seat 14. The output shaft of the flipping motor 21 is horizontally arranged and the driving sprocket is installed thereon. The flipping shaft 23 is installed on the lifting seat 14 through the bushing 24. The flipping shaft 23 is parallel to the output shaft of the flipping motor 21 and the driven sprocket is installed thereon. The driven sprocket and the driving sprocket are connected by chain drive.

[0036] The double pin mechanism 30 is installed on the flipping shaft 23 of the flipping mechanism 20 and is driven by the flipping shaft 23 to flip in the vertical plane. The double pin mechanism 30 is used to connect one end of the flipping die holder 50 to drive the flipping die holder 50 to flip. Specifically, the double pin mechanism 30 includes a first mounting seat 31, two first cylinders 32, two first pins 33, and two first pin seats 34. The first mounting seat 31 is installed on the flipping shaft 23. The two first cylinders 32 are both installed on the first mounting seat 31 and are symmetrically arranged about the axis of the flipping shaft 23. The piston rods of the two first cylinders 32 are both horizontally oriented towards the side where the single pin mechanism 40 is located and are respectively coaxially connected to the two first pins 33. The first pin 33 is a two-stage structure composed of a round shaft section and a square shaft section. One end of the corresponding square shaft section of the first pin 33 is connected to the piston end of the first cylinder 32. The other end of the first pin 33 is used to insert into the first pin sleeve 511 at one end of the flipping die holder 50. The round shaft section facilitates the insertion into the first pin sleeve 511, and the square shaft section is used to cooperate with the square hole of the first pin sleeve 511 to achieve anti-rotation. The two first pin seats 34 are both installed on the first mounting seat 31 and are respectively arranged corresponding to the two first cylinders 32. Each first pin seat 34 has a square through hole for the first pin 33 to slide and matching the square shaft section. Using the double pin mechanism 30 to connect the flipping die holder 50 not only ensures the structural stability of the flipping die holder 50 when it is stationary, but also ensures the structural stability of the flipping die holder 50 when it is flipping.

[0037] The single latch mechanism 40 is mounted on the lifting base 14 of the other lifting mechanism 10 and is driven by the lifting base 14 to move upward and downward. The single latch mechanism 40 is used to connect to the other end of the flip mold frame 50 to assist in flipping the flip mold frame 50. Specifically, the single latch mechanism 40 includes a second mounting base 41, a second cylinder 42, a second latch 43, and a second latch base 44. The second mounting base 41 is mounted on the lifting base 14, and the second cylinder 42 is mounted on the second mounting base 41. The piston rod of the second cylinder 42 is horizontally oriented toward the side of the double latch mechanism 30 and is coaxially connected to the second latch 43. The second latch 43 is coaxially arranged with the flip axis 23 of the flip mechanism 20. The second latch 43 is similarly constructed of two sections, consisting of a round shaft and a square shaft. One end of the square shaft section of the second latch 43 is connected to the piston end of the second cylinder 42. The other end of the second latch 43 is inserted into the second latch sleeve at the other end of the flip mold frame 50. The round shaft section facilitates insertion into the second latch sleeve, while the square shaft section mates with the square hole in the second latch sleeve to prevent rotation. A second latch seat 44 is mounted on the second mounting base 41. The second latch seat 44 has a square through-hole for the second latch 43 to slide through and mates with the square shaft section.

[0038] To enhance automation, this large-scale dihedral workpiece flipping device also includes a control unit. This control unit is used to control the operation of the two lifting motors 15 of the lifting mechanisms 10, the flip motor 21 of the flip mechanism 20, the two first cylinders 32 of the double latch mechanism 30, and the second cylinder 42 of the single latch mechanism 40. The control unit can control the lifting motors 15 to raise or lower the lifting base 14 to any desired position. It can also control the flip motor 21 to rotate the flip axis 23 to any desired angle. Figure 5 Schematic diagram of the structure of the flip mold frame 50 before flipping. Figure 6 3 is a schematic structural diagram of the flip mold frame 50 after flipping.

[0039] like Figure 5 and Figure 6 As shown, a flip mold frame 50 is used to clamp a dihedral workpiece 1 and drive its flipping. The flip mold frame 50 includes a mold frame body 51, two mounting frames 52, multiple lifting angle adjustment mechanisms 53, a synchronous drive mechanism 54, two first clamping mechanisms 55, two second clamping mechanisms 56, and multiple support frames 57. Details are described below. The X-axis and Y-axis in the figure represent the length and width directions, respectively.

[0040] The mold frame body 51 is used to mount and support components. It is approximately rectangular. Each mounting bracket 52 is rectangular and symmetrically arranged on either side of the mold frame body 51. The adjacent sides of the top surfaces of the two mounting brackets 52 are hinged to the bottom surface of the mold frame body 51 via multiple hinges distributed along its length.

[0041] A plurality of lifting angle adjusting mechanisms 53 are installed on the die carrier main body 51 and are equally spaced along the length direction of the die carrier main body 51. Each lifting angle adjusting mechanism 53 is connected to two mounting brackets 52 and is used to adjust the included angle between the two mounting brackets 52. Specifically, each lifting angle adjusting mechanism 53 includes a lifting mechanism, a lifting slider 532, and two connecting rods 533. The lifting mechanism is installed on the die carrier main body 51. The lifting slider 532 is connected to the lifting mechanism and is driven by the lifting mechanism to move up and down. A slideway for the lifting slider 532 to slide is provided on the die carrier main body 51. The two connecting rods 533 are arranged on both sides of the lifting slider 532. One end of each of the two connecting rods 533 is hinged to both sides of the lifting slider 532, and the other end of each of the two connecting rods 533 is hinged to the top surfaces of the two mounting brackets 52. When the lifting slider 532 moves up and down, the two connecting rods 533 drive the two mounting brackets 52 to rotate, thereby changing the included angle between the two mounting brackets 52.

[0042] In this embodiment, the lifting mechanism selects a worm gear screw jack 531, which has the advantages of high precision, compact structure, light weight, and a wide range of power sources. More importantly, it can be used in combination with multiple units. The base of the worm gear screw jack 531 is installed on the top surface of the die carrier main body 51, and the nut of the worm gear screw jack 531 is connected to the lifting slider 532; the lengths of the two connecting rods 533 are ensured such that when the turning die carrier 50 is not turned and the lifting slider 532 is at the lowest position, the height position of the adjacent sides of the two mounting brackets 52 is still lower than the height position of the opposite sides.

[0043] A synchronous driving mechanism 54 is installed on the die carrier main body 51 and is connected to the lifting mechanisms of a plurality of lifting angle adjusting mechanisms 53. The synchronous driving mechanism 54 is used to synchronously drive the lifting mechanisms of the plurality of lifting angle adjusting mechanisms 53 to work. Specifically, the synchronous driving mechanism 54 includes multiple synchronous shafts 541 and a driving member. The lifting mechanisms of every two adjacent lifting angle adjusting mechanisms 53 are connected by one synchronous shaft 541, and the driving member is connected to the lifting mechanism at the outermost end through one synchronous shaft 541.

[0044] In this embodiment, because in actual use, the included angle between the two mounting brackets 52 does not need to be frequently adjusted, and thus there is no need to frequently drive the lifting mechanism to work, the driving member selects a handle 542, which is more economical and practical in a manual manner. At the same time, a clamping member 543 is configured. The clamping member 543 is installed on the top surface of the die carrier main body 51 and is used to clamp the synchronous shaft 541 connected to the handle 542, which can meet the high-precision positioning requirements.

[0045] Two first clamping mechanisms 55 are symmetrically installed on the bottom surfaces of the two mounting brackets 52 and are arranged at one end in the length direction. Each first clamping mechanism 55 is fixed in the length direction of the corresponding mounting bracket 52 and is adjustable and movable in the width direction. Specifically, each first clamping mechanism 55 includes a first clamping seat 551 and a first Y-axis adjustment mechanism. The first clamping seat 551 is provided with a jack 5511 for mating with the insertion rod to connect the dihedral workpiece 1. The first Y-axis adjustment mechanism is used to adjust the position of the first clamping seat 551 in the width direction of the corresponding mounting bracket 52, that is, to adjust the position of the first clamping seat 551 on the Y-axis shown in the figure.

[0046] In this embodiment, the first Y-axis adjustment mechanism includes a first Y-axis linear guide 552 and a first Y-axis screw mechanism 553. The slide rail of the first Y-axis linear guide 552 is installed on the bottom surface of the mounting bracket 52, and the first clamping seat 551 is installed on the slider of the first Y-axis linear guide 552. The screw of the first Y-axis screw mechanism 553 is a self-locking trapezoidal screw. The screw seat of the first Y-axis screw mechanism 553 is installed on the mounting bracket 52, and the nut of the first Y-axis screw mechanism 553 is connected to the first clamping seat 551. When it is necessary to adjust the position of the first clamping seat 551 in the width direction of the corresponding mounting bracket 52, a matching handle is installed at the end of the screw of the first Y-axis screw mechanism 553, and the handle is manually operated for adjustment. After the adjustment is in place, the handle is removed. The screw of the first Y-axis screw mechanism 553 can be self-locked.

[0047] Figure 7 is Figure 6 the partial enlarged view of the position A in Figure 8 and is the longitudinal sectional view of the flipped die carrier 50 at the second Y-axis adjustment mechanism.

[0048] As Figures 5 to 8 shown, two second clamping mechanisms 56 are symmetrically installed on the bottom surfaces of the two mounting brackets 52. Each second clamping mechanism 56 is adjustable and movable in both the length direction and the width direction of the corresponding mounting bracket 52. Specifically, each second clamping mechanism 56 includes a second clamping seat 561, an X-axis adjustment mechanism, and a second Y-axis adjustment mechanism. The second clamping seat 561 is also provided with a jack for mating with the insertion rod to connect the dihedral workpiece 1. The X-axis adjustment mechanism is used to adjust the position of the second clamping seat 561 in the length direction of the corresponding mounting bracket 52, that is, to adjust the position of the second clamping seat 561 on the X-axis shown in the figure. The second Y-axis adjustment mechanism is used to adjust the position of the second clamping seat 561 in the width direction of the corresponding mounting bracket 52, that is, to adjust the position of the second clamping seat 561 on the Y-axis shown in the figure.

[0049] In this embodiment, the X-axis adjustment mechanism includes an X-axis linear guide rail 562 and a clamp 563. The slide rail of the X-axis linear guide rail 562 is mounted on the bottom surface of the mounting frame 52, and the clamp 563 is mounted on the slide rail of the X-axis linear guide rail 562. The clamp 563 is used to lock the position of the second clamping seat 561 in the length direction of the mounting frame 52 where it is located. The second Y-axis adjustment mechanism includes a Y-axis mounting seat 564, a second Y-axis linear guide rail 565, and a second Y-axis screw mechanism 566. The Y-axis mounting seat 564 is mounted on the slider and the clamp 563 of the X-axis linear guide rail 562. The slide rail of the second Y-axis linear guide rail 565 is mounted on the Y-axis mounting seat 564, and the second clamping seat is mounted on the slider of the second Y-axis linear guide rail 565. The screw of the second Y-axis screw mechanism 566 is a self-locking trapezoidal screw. The screw seat of the second Y-axis screw mechanism 566 is mounted on the Y-axis mounting seat 564, and the nut of the second Y-axis screw mechanism 566 is connected to the second clamping seat 561. When it is necessary to adjust the position of the second clamping seat 561 in the length direction of the mounting frame 52 where it is located, loosen the clamp 563, move the Y-axis mounting seat 564, and after moving in place, lock the clamp 563. When it is necessary to adjust the position of the second clamping seat 561 in the width direction of the mounting frame 52 where it is located, install the matching handle on the end of the screw of the second Y-axis screw mechanism 566, manually operate the handle for adjustment, and after adjustment in place, remove the handle. The screw of the second Y-axis screw mechanism 566 can be self-locked.

[0050] As Figure 5 and Figure 6 shown, a plurality of support frames 57 are mounted on the top surface of the die carrier body 51 and are spaced apart along the length direction of the die carrier body 51. The support frames 57 are used to support the turned-over turnover die carrier 50. In this embodiment, the support frame 57 is provided with a pin hole 571. When the turned-over turnover die carrier 50 is placed on the upper die base 3, the pin hole 571 is connected to the pin on the upper die base 3 to achieve positioning.

[0051] Before clamping the dihedral workpiece 1, the turning die holder 50 needs to adjust the included angle between the two mounting brackets 52 and the positions of the two first clamping seats 551 and the two second clamping seats 561 to adapt to the dihedral workpiece 1 to be clamped. First, adjust the included angle between the two mounting brackets 52. During adjustment, first loosen the clamping member 543, and then manually operate the handle 542 of the synchronous driving mechanism 54. The synchronous driving mechanism 54 drives the multiple lifting angle adjusting mechanisms 53 to act synchronously, changing the included angle between the two mounting brackets 52. When the included angle matches that of the dihedral workpiece 1 to be clamped, stop operating the handle 542, and then lock the clamping member 543 to complete the adjustment operation. Then, adjust the positions of the two first clamping seats 551 to match the width of the dihedral workpiece 1 to be clamped on the Y-axis. Since the two first clamping seats 551 are fixed on the X-axis, taking these two first clamping seats 551 as a reference, adjust the positions of the two second clamping seats 561 to match the length and width of the dihedral workpiece 1 to be clamped on the X-axis and Y-axis respectively, thus completing the adjustment operation. As Figure 1 shown, in the initial state of the large-sized dihedral workpiece turning device, the lifting seats 14 of the two lifting mechanisms 10 are at the high position. The two ends of the turning die holder 50 are respectively connected to the double pin mechanism 30 and the single pin mechanism 40, and the turning die holder 50 has been pre-adjusted to match the dihedral workpiece 1 to be clamped. Among them, the two first cylinders 32 of the double pin mechanism 30 extend, so that the two first pins 33 are inserted into the two first pin sleeves 511. The second cylinder 42 of the single pin mechanism 40 extends, so that the second pin 43 is inserted into the second pin sleeve. The square shaft section of each pin cooperates with the square hole of the corresponding pin sleeve to achieve anti-rotation.

[0052] Figure 9 It is a schematic structural diagram when the large-sized dihedral workpiece turning device turns the turning die holder 50.

[0053] The working process of the large-sized dihedral workpiece turning device and the operation process of manual cooperation are as follows: First, as Figure 1As shown, the lower die 2 carrying the dihedral workpiece 1 is conveyed to directly below the flipping die holder 50 by the conveyor 60. Then, the lifting motors 15 of the two lifting mechanisms 10 work synchronously, and the flipping die holder 50 is lowered to the position where the dihedral workpiece 1 is located through the two lifting seats 14. Next, the operator connects the dihedral workpiece 1 and the flipping die holder 50 with a plug rod. Specifically, observe whether the jack holes on the two first clamping seats 551 and the two second clamping seats 561 are aligned with the jack holes at the four corners of the front of the dihedral workpiece 1. If they are aligned, connect them with a plug rod. If there is a deviation, adjust and then connect them with a plug rod. Then, the lifting motors 15 of the two lifting mechanisms 10 work synchronously, and the flipping die holder 50 clamping the dihedral workpiece 1 is lifted to a high position through the two lifting seats 14. After that, the second cylinder 42 of the single pin mechanism 40 acts first, so that the circular shaft section of the second pin 43 is fitted with the square hole of the second pin sleeve. Then, the flipping motor 21 of the flipping mechanism 20 works, and the double pin mechanism 30 is driven to rotate through the chain drive assembly 22 and the flipping shaft 23. Furthermore, the double pin mechanism 30 drives the flipping die holder 50 and the dihedral workpiece 1 thereon to achieve a set 180° flip, as shown in Figure 9 , after the flipping is completed, the second cylinder 42 of the single pin mechanism 40 acts again, so that the square shaft section of the second pin 43 is fitted with the square hole of the second pin sleeve to achieve anti-rotation. Then, the conveyor 60 has already conveyed the upper die base 3 to directly below the flipping die holder 50 in advance. The lifting motors 15 of the two lifting mechanisms 10 work synchronously, and the flipping die holder 50 is lowered to the upper die base 3 through the two lifting seats 14. The flipping die holder 50 is supported on the upper die base 3 by multiple support frames 57, and the pin holes 571 of the support frames 57 and the pins on the upper die base 3 are connected for positioning. The flipping die holder 50 and the upper die base 3 form the upper die. Finally, the two first cylinders 32 of the double pin mechanism 30 and the second cylinder 42 of the single pin mechanism 40 both retract to release the flipping die holder 50, and the conveyor 60 can convey the upper die and the dihedral workpiece 1 that has been flipped thereon to the next working station.

[0054] Functions and effects of the embodiment

[0055] According to the large-sized dihedral workpiece flipping device involved in this embodiment, since the double pin mechanism is adopted on the side where the flipping mechanism is located to drive the flipping die carrier to flip, and the single pin mechanism is adopted on the opposite side as a fulcrum to assist the flipping die carrier to flip, this device not only ensures the structural stability of the flipping die carrier when it is stationary, but also ensures the structural stability of the flipping die carrier when it is flipping. Especially when performing the flipping operation of an eccentric large-sized dihedral workpiece, the safety is guaranteed; because the lifting mechanism has a lifting function, and both ends of the flipping die carrier are detachably connected to the double pin mechanism and the single pin mechanism respectively, this device can be combined with various logistics equipment to transport the flipping die carrier on the conveyor line. The flipping of the dihedral workpiece can be directly carried out on the conveyor line, realizing automatic loading and unloading and production line production, improving the production efficiency. At the same time, because the flipping of the flipping die carrier is realized by the flipping mechanism driving the double pin mechanism to flip after the two lifting mechanisms lift the flipping die carrier, this device realizes the non-damaging flipping of the large-sized dihedral workpiece, avoiding the collision between the flipping die carrier and the corner plate and the conveyor line during the flipping process, and ensuring the production safety; because the flipping die carrier adopts a synchronous drive mechanism to drive multiple lifting angle adjustment mechanisms to adjust the included angle between the two mounting brackets, and a first clamping mechanism and a second clamping mechanism are installed on each mounting bracket. The first clamping mechanism can be adjusted and moved in the width direction of the mounting bracket where it is located, and the second clamping mechanism can be adjusted and moved in both the length and width directions of the mounting bracket where it is located, so the flipping die carrier can effectively fix dihedral workpieces with different angles and different sizes, and this device can realize the flipping of dihedral workpieces with different angles, different sizes, especially eccentric ones; because there are multiple support frames provided on the top surface of the mold body of the flipping die carrier, the flipping die carrier can be placed by being supported by the support frames after flipping, avoiding tipping over and maintaining stability.

[0056] The lifting mechanism is driven by a lifting motor and transmitted by a gear-rack assembly, driving the lifting seat to lift along the linear guide rail on the column. As a transmission component, the gear-rack assembly has the advantages of stable and precise transmission. The number of columns of each lifting mechanism is two, and the two columns can ensure the structural stability when the flipping mechanism operates.

[0057] The flipping mechanism is driven by a flipping motor and transmitted by a chain drive assembly, driving the flipping shaft to rotate around the axis. As a transmission component, the chain drive assembly has the advantages of high transmission efficiency and large transmission ratio, and is suitable for working occasions with low speed and heavy load.

[0058] The double pin mechanism uses two cylinders to drive two pins to extend and retract respectively, and the single pin mechanism uses a single cylinder to drive a single pin to extend and retract. Among them, each pin is a two-stage structure composed of a round shaft section and a square shaft section. The round shaft section is convenient for inserting into the pin sleeve at the end of the die carrier, and the square shaft section is used to cooperate with the square hole of the pin sleeve to achieve anti-rotation.

[0059] The lifting angle adjustment mechanism includes a lifting mechanism, a lifting slider, and two connecting rods. The lifting mechanism drives the lifting slider to move up and down, and the lifting slider drives two mounting brackets to rotate through the two connecting rods, thereby changing the included angle between the two mounting brackets. Among them, the lifting mechanism preferably uses a worm and screw lift, which has the advantages of high precision, compact structure, light weight, and a wide range of power sources. More importantly, it can be used in combination with multiple machines. The synchronous drive mechanism includes a synchronous shaft and a handle. The lifting mechanisms of multiple lifting angle adjustment mechanisms are linked through the synchronous shaft. The handle is manually operated to drive the synchronous shaft, and then drive multiple lifting mechanisms to work synchronously. A clamping member is configured on the synchronous shaft connected to the driving member, which can meet the high-precision positioning requirements.

[0060] The first clamping mechanism includes a first clamping seat and a first Y-axis adjustment mechanism. The first Y-axis adjustment mechanism is used to adjust the position of the first clamping seat in the width direction of the mounting bracket where it is located. The first Y-axis adjustment mechanism includes a first Y-axis linear guide rail and a first Y-axis screw mechanism. The screw of the first Y-axis screw mechanism is preferably a trapezoidal screw. During adjustment, a matching handle is installed at the end of the screw of the first Y-axis screw mechanism, and the handle is manually operated for adjustment. After the adjustment is in place, the screw of the first Y-axis screw mechanism can be self-locked.

[0061] The second clamping mechanism includes a second clamping seat, an X-axis adjustment mechanism, and a second Y-axis adjustment mechanism. The X-axis adjustment mechanism is used to adjust the position of the second clamping seat in the length direction of the mounting bracket where it is located, and the second Y-axis adjustment mechanism is used to adjust the position of the second clamping seat in the width direction of the mounting bracket where it is located. The X-axis adjustment mechanism includes an X-axis linear guide rail and a clamp. The second Y-axis adjustment mechanism includes a Y-axis mounting seat, a second Y-axis linear guide rail, and a second Y-axis screw mechanism. The screw of the second Y-axis screw mechanism is preferably a trapezoidal screw. When adjusting the position of the second clamping seat on the X-axis, loosen the clamp and then move the Y-axis mounting seat. After the position of the second clamping seat is adjusted in place, lock the clamp. When adjusting the position of the second clamping seat on the Y-axis, a matching handle is installed at the end of the screw of the second Y-axis screw mechanism, and the handle is manually operated for adjustment. After the adjustment is in place, the screw of the second Y-axis screw mechanism can be self-locked.

[0062] This large-size dihedral workpiece flipping device may further include a conveyor. There are pin holes for positioning on the support frame of the flipping die holder. When the flipped flipping die holder is placed on the upper die base conveyed by the conveyor, the pin holes can be connected to the pins on the upper die base to achieve positioning.

[0063] The above embodiments are preferred cases of the present invention and are not used to limit the protection scope of the present invention.

Claims

1. A large-size dihedral workpiece turning device, characterized in that: include: Two lifting mechanisms, arranged symmetrically; A turning mechanism is installed on one of the lifting mechanisms and is driven by the lifting mechanism to move up and down; A double latch mechanism is mounted on the flip mechanism and driven by the flip mechanism to flip on a vertical plane, the double latch mechanism being arranged horizontally toward the side where the single latch mechanism is located; A single latch mechanism is installed on the other lifting mechanism and is driven to move up and down by the other lifting mechanism, and the single latch mechanism is arranged horizontally toward the side where the double latch mechanism is located; as well as The flip mold frame is used to clamp the dihedral workpiece, including a mold frame body, two mounting frames, multiple lifting angle adjustment mechanisms, a synchronous drive mechanism, two first clamping mechanisms, two second clamping mechanisms, and multiple support frames. The two ends of the mold frame body are detachably connected to the double latch mechanism and the single latch mechanism respectively. The two mounting brackets are symmetrically arranged on both sides of the formwork body, and the adjacent sides of the two mounting brackets are hinged to the bottom of the formwork body respectively. A plurality of said lifting angle adjustment mechanisms are installed on the mold frame body at intervals along the length direction, and each said lifting angle adjustment mechanism is connected to two said mounting brackets to adjust the angle between the two said mounting brackets. The synchronous driving mechanism is installed on the mold frame body and connected to the plurality of lifting angle adjustment mechanisms, and is used to synchronously drive the plurality of lifting angle adjustment mechanisms to work. The two first clamping mechanisms are symmetrically mounted on the two mounting frames and are arranged at one end in the length direction. Each of the first clamping mechanisms is adjustable and movable in the width direction of the mounting frame, The two second clamping mechanisms are symmetrically mounted on the two mounting frames, and each second clamping mechanism is adjustable and movable in the length direction and width direction of the mounting frame. A plurality of support frames are installed on the top surface of the mold frame body at intervals along the length direction. Each of the first clamping mechanisms includes a first clamping seat and a first Y-axis adjustment mechanism, The first clamping seat is provided with a socket for connecting the dihedral workpiece with the plug rod. The first Y-axis adjustment mechanism is used to adjust the position of the first clamping seat in the width direction of the mounting frame. The first Y-axis adjustment mechanism includes a first Y-axis linear guide rail and a first Y-axis lead screw mechanism. The slide rail of the first Y-axis linear guide is installed on the bottom surface of the mounting frame, and the first clamping seat is installed on the slider of the first Y-axis linear guide. The screw of the first Y-axis screw mechanism is a trapezoidal screw, the screw seat of the first Y-axis screw mechanism is installed on the mounting frame, and the nut of the first Y-axis screw mechanism is connected to the first clamping seat. Each of the second clamping mechanisms includes a second clamping seat, an X-axis adjustment mechanism and a second Y-axis adjustment mechanism, The second clamping seat is provided with a socket for cooperating with the insert rod to connect the dihedral workpiece. The X-axis adjustment mechanism is used to adjust the position of the second clamping seat in the longitudinal direction of the mounting frame, and the X-axis adjustment mechanism includes an X-axis linear guide and a clamp. The slide rail of the X-axis linear guide is installed on the bottom surface of the mounting frame. The clamp is installed on the slide rail of the X-axis linear guide rail. The second Y-axis adjustment mechanism is used to adjust the position of the second clamping seat in the width direction of the mounting frame. The second Y-axis adjustment mechanism includes a Y-axis mounting seat, a second Y-axis linear guide rail and a second Y-axis lead screw mechanism. The Y-axis mounting seat is mounted on the slider of the X-axis linear guide and the clamp. The slide rail of the second Y-axis linear guide is installed on the Y-axis mounting seat, and the second clamping seat is installed on the slider of the second Y-axis linear guide. The screw of the second Y-axis screw mechanism is a trapezoidal screw, the screw seat of the second Y-axis screw mechanism is installed on the Y-axis mounting seat, and the nut of the second Y-axis screw mechanism is connected to the second clamping seat.

2. The large-size dihedral workpiece turning device according to claim 1, characterized in that: in, Each of the lifting mechanisms includes two columns, two linear guide rails, a gear rack assembly, a lifting seat, and a lifting motor. The two columns are spaced apart. The slide rails of the two linear guide rails are respectively installed on the sides of the two columns. The gear rack assembly includes a meshing gear and a rack, and the rack is mounted on the side of one of the pillars. The lifting seat is installed across the sliders of the two linear guide rails. The lifting motor is installed on the lifting seat, and the gear is installed on the output shaft of the lifting motor.

3. The large-size dihedral workpiece turning device according to claim 1, characterized in that: in, The turning mechanism includes a turning motor, a chain drive assembly, a turning shaft, and a shaft sleeve. The chain transmission assembly includes a driving sprocket, a driven sprocket and a chain connected to each other. The flip motor is installed on the lifting mechanism, the output shaft of the flip motor is arranged horizontally and the driving sprocket is installed on it, The flip shaft is mounted on the lifting mechanism through the shaft sleeve. The flip shaft is parallel to the output shaft of the flip motor and the driven sprocket is mounted on the flip shaft.

4. The large-size dihedral workpiece turning device according to claim 3, characterized in that: in, The double latch mechanism includes a first mounting base, two first cylinders, two first latches, and two first latch seats. The first mounting seat is mounted on the flip shaft, The two first cylinders are both mounted on the first mounting seat and are symmetrically arranged about the axis of the flip axis. The piston rods of the two first cylinders are both horizontally oriented toward the side where the single latch mechanism is located and are coaxially connected to the two first latches respectively. The first latch is a two-section structure consisting of a round shaft section and a square shaft section. One end of the first latch corresponding to the square shaft section is connected to the piston end of the first cylinder. Two first latch seats are mounted on the first mounting seat and are respectively arranged corresponding to the two first cylinders, and each first latch seat has a square through hole for the first latch to slide and match the square shaft segment; One end of the mold frame body is provided with two first latch sleeves corresponding to the two first latch pins. Each of the first latch sleeves has a square hole matching the first latch.

5. The large-size dihedral workpiece turning device according to claim 3, characterized in that: in, The single latch mechanism includes a second mounting base, a second cylinder, a second latch, and a second latch base. The second mounting seat is mounted on the lifting mechanism. The second cylinder is mounted on the second mounting base, and the piston rod of the second cylinder is horizontally oriented toward the side where the double latch mechanism is located and is coaxially connected to the second latch. The second latch is coaxially arranged with the flip axis. The second latch is a two-section structure consisting of a round shaft section and a square shaft section. One end of the second latch corresponding to the square shaft section is connected to the piston end of the second cylinder. The second latch seat is mounted on the second mounting seat, and the second latch seat has a square through hole for the second latch to slide and matches the square shaft segment; The other end of the mold frame body is provided with a second latch sleeve corresponding to the second latch. The second latch sleeve has a square hole matching the second latch.

6. The large-size dihedral workpiece turning device according to claim 1, characterized in that: in, Each of the lifting angle adjustment mechanisms includes a lifting mechanism, a lifting slider, and two connecting rods. The lifting mechanism is installed on the mold frame body. The lifting slider is connected to the lifting mechanism and is driven by the lifting mechanism to move up and down. One end of the two connecting rods is hinged to both sides of the lifting slider respectively, and the other ends of the two connecting rods are hinged to the two mounting frames respectively.

7. The large-size dihedral workpiece turning device according to claim 6, characterized in that: in, The lifting mechanism is a worm screw lift; The synchronous drive mechanism includes multiple synchronous shafts and handles. Each adjacent two lifting mechanisms are connected via a synchronization shaft. The handle is connected to the lifting mechanism at the end through a synchronous shaft, and a clamping member is provided on the synchronous shaft connected to the handle.

8. The large-size dihedral workpiece turning device according to claim 1, Its characteristics are: Among them, also include: A conveyor is provided at the bottom of the two lifting mechanisms; Each support frame is provided with a pin hole for positioning.

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