Multi-station bending device for car coupler lifting rod

Abstract

The invention relates to the field of railway wagon manufacturing, and discloses a coupler lever multi-station bending device which comprises a main plate, a positioning mechanism and a driving mechanism. The main board sequentially comprises a first area, a second area and a third area from left to right. The positioning mechanism is located above the main plate and comprises a positioning block located in the third area and used for positioning the first bent part, a first area on the left side of the positioning block is provided with an inclination fixing block used for positioning part of the bent part, and a second area on the right side of the inclination fixing block is provided with a positioning pin and a positioning hole allowing the positioning pin to penetrate through. The positioning pins are inserted into the corresponding positioning holes to fix bent parts according to bending requirements; the driving mechanism is located below the second area and comprises a power component and a rotating component; the power component drives the rotating component to rotate clockwise or anticlockwise, and drives the unfixed part to rotate to form bending shapes of different spaces. According to the invention, six bent shapes of the car coupler lifting rod can be manufactured, and the production efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the field of railway freight car manufacturing, and in particular to a multi-station bending device for a hook lifting rod. Background Art

[0002] The coupler lever is a key component of the rear coupler of a railway freight car, and plays an important role in connecting and separating railway vehicles. The complexity of its structure directly affects the difficulty of the manufacturing process. Figure 1 , 2 As shown in the figure, the whole coupler lever presents a six-bend design, among which the first and last two bends are not in the same spatial plane as the four middle bends. Specifically, the first and last bends are 90° and 180° respectively, and the bending directions are at 90° and 43° with the longitudinal centerline of the vehicle; the four middle bends have bending angles of 129°, 129°, 127°, and 127° respectively, and there is a specific spatial position relationship between them. This complex structure makes the coupler lever face many challenges in the manufacturing process, and it is difficult to manufacture.

[0003] At present, there are two main ways to make a coupler lifting rod: (1) Traditional production method: a mold is made for each curved part. During the production process, multiple operators use Φ25 bars to perform bending operations and use two hammers to knock the curved parts into place one by one. However, this method not only takes a long time to make and requires a separate mold for each curved part, which leads to cumbersome processes, but also has high labor intensity, low efficiency, and extremely unstable quality. (2) Customized coupler lifting rod production machine: Each curved part has a corresponding power mechanism (such as a servo motor, hydraulic cylinder, etc.) to make it bend, but multiple power mechanisms are required, that is, each curved part requires a power mechanism, and six curved parts require at least six power mechanisms, which greatly increases the mechanical and electrical complexity of the equipment, high production costs, and difficult maintenance. Summary of the invention

[0004] The present invention aims to provide a multi-station bending device for a coupler lifting rod, which can complete the production of six bends of the coupler lifting rod and improve its production efficiency and quality.

[0005] To achieve the above object, the present invention adopts the following technical solution: a multi-station bending device for a hook lifting rod, comprising a main board for supporting a workpiece, a positioning mechanism for fixing a bent portion of the workpiece, and a driving mechanism for processing a straight workpiece into a hook lifting rod; the main board comprises a first area, a second area, and a third area from left to right;

[0006] The positioning mechanism is located above the main board, and the positioning mechanism includes a positioning block; the positioning block is located in the third area and is used to contact the head of the workpiece to position the first bend; a plurality of inclination fixing blocks are provided on the left side of the positioning block, and are located in the first area, and are used to fix the head of the workpiece to position and fix the bend; wherein the inclination fixing block includes a fourth inclination fixing block, a third inclination fixing block, a second inclination fixing block and a first inclination fixing block in the direction of the second area; the first inclination fixing block is used to position and fix the second bend, the second inclination fixing block is used to position and fix the third bend, the third inclination fixing block is used to position and fix the fourth bend, and the fourth inclination fixing block is used to position and fix the fifth bend; a plurality of positioning pins and positioning holes for the positioning pins to pass through are provided on the right side of the inclination fixing block, and are located in the second area, and the positioning pins are inserted into the required positioning holes according to different bends for fixing different bending parts and for positioning and fixing the sixth bend;

[0007] The driving mechanism is located below the second area, and includes a power component and a rotating component; the power component is used to provide power to make the rotating component connected above it rotate clockwise or counterclockwise, thereby driving the unfixed part of the workpiece to rotate and form bending shapes in different spaces.

[0008] The principles and advantages of this solution are: in actual application, when making the first bend, first insert a number of locating pins into the required locating holes, then put the workpiece into the main board, and ensure that the workpiece passes through the required locating pins, and at the same time, the head of the workpiece contacts the locating block to fix the bending part of the first bend of the workpiece, and then start the power component to provide power to drive the rotating component connected above it to rotate clockwise or counterclockwise, thereby driving the unfixed part of the workpiece to rotate to form the first bend; when making the second bend, insert a number of locating pins into the required locating holes, then put the workpiece into the main board, and ensure that the workpiece passes through the required locating pins, and the head of the workpiece is aligned with the first slope The fixed block contacts to position and fix the bending part of the second bend, and then the power component is started to provide power to drive the rotating component connected above it to rotate clockwise or counterclockwise, thereby driving the unfixed part of the workpiece to rotate and form the second bend; when making the third bend, a number of locating pins are inserted into the required locating holes, and then the workpiece is placed in the main board, and it is ensured that the workpiece passes through the required locating pins, and the head of the workpiece contacts the second slope fixing block to position and fix the bending part of the third bend, and then the power component is started to provide power to drive the rotating component connected above it to rotate clockwise or counterclockwise, thereby driving the unfixed part of the workpiece to rotate , forming a third bend; when making the fourth bend, insert a number of locating pins into the required locating holes, then put the workpiece into the main board, and make sure that the workpiece passes through between the required locating pins, and the head of the workpiece contacts the third slope fixing block to locate and fix the bending part of the fourth bend, and then start the power component to provide power to drive the rotating component connected above it to rotate clockwise or counterclockwise, thereby driving the unfixed part of the workpiece to rotate, forming the fourth bend; when making the fifth bend, insert a number of locating pins into the required locating holes, then put the workpiece into the main board, and make sure that the workpiece passes through between the required locating pins, and the head of the workpiece contacts the fourth slope fixing block to Position and fix the bending part of the fifth bend, and then start the power component to provide power to drive the rotating component connected above it to rotate clockwise or counterclockwise, thereby driving the unfixed part of the workpiece to rotate and form the fifth bend; when making the sixth bend, insert a number of locating pins into the required locating holes, then place the workpiece into the main board, and ensure that the tail of the workpiece passes through the required locating pins to position and fix the bending part of the sixth bend, and then start the power component to provide power to drive the rotating component connected above it to rotate clockwise or counterclockwise, thereby driving the unfixed part of the workpiece to rotate and form the sixth bend, thereby realizing the processing of different bends of the workpiece.

[0009] The advantages of this solution are: (1) This solution breaks the technical prejudice in the prior art that when achieving the production of multiple complex bends, it is necessary to rely on multiple molds or power mechanisms, each of which is only for a specific type of bend, that is, it breaks the technical prejudice that a device or a single power mechanism cannot simultaneously have the ability to produce multiple different bends, and breaks the technical prejudice that singleness and multifunctionality cannot be achieved at the same time. Through the careful design of the main board, positioning mechanism and driving mechanism, this solution can complete the production of multiple different spatial bends using one device with a single power mechanism.

[0010] (2) It reduces the need for multiple tools (i.e., multiple molds and power mechanisms), thereby reducing manufacturing and maintenance costs.

[0011] (3) This solution can adapt to the needs of different spatial bending types, increasing production flexibility and response speed.

[0012] (4) The structure is simple, which simplifies the operation process and improves work efficiency.

[0013] (5) In short, this solution not only improves the versatility and efficiency of the device, but also reduces production cost and complexity.

[0014] Preferably, as an improvement, the main board also includes a center pin hole; the rotating component includes a rotating disk and a rotating pin for bending the bending part of the workpiece, the rotating disk is provided with a rotating center hole and rotating pin holes distributed in a circular pattern, the center pin hole is located in the second area and above the rotating center hole, a hinge core is provided in the rotating center hole, the hinge core passes through the center pin hole and is inserted into the rotating center hole, the rotating pin is located in the rotating pin hole, the power component provides power to drive the rotating disk to rotate clockwise or counterclockwise along the hinge core, and under the traction of the rotating disk, the rotating pin also rotates accordingly to bend the bending part of the workpiece.

[0015] Beneficial effects: The circumferentially distributed rotating pin holes allow the rotating pins to be installed in different positions, providing more bending directions and path options for forming complete workpieces, increasing processing flexibility and diversity; the hinge core passes through the center pin hole and the rotating center hole at the same time, and the power component drives the rotating disk to rotate clockwise or counterclockwise along the hinge core. This design can quickly switch between different bending modes, significantly improving production efficiency, while providing precise rotational motion, ensuring the accuracy and consistency of workpiece bending, and reducing errors.

[0016] Preferably, as an improvement, the power component includes a motor and a gear transmission mechanism.

[0017] Beneficial effect: When providing power to the rotating parts, the power parts can adjust the output speed and torque through different gear combinations and the motor's own speed regulation and control capabilities to adapt to working conditions with different bending requirements.

[0018] Preferably, as an improvement, the main board is further provided with a waist-shaped groove, the waist-shaped groove is located in the third area and on the right side of the hinge core, and the rotating pin passes through the waist-shaped groove.

[0019] Beneficial effect: The waist groove can be used to limit the rotating pin to accurately control the bending path of the workpiece during the bending process, thereby being able to adapt to different types of bending production and ensuring the consistency and accuracy of each bending operation.

[0020] Preferably, as an improvement, the waist-shaped groove is an arc-shaped structure, which is used to limit the rotation range α of the rotating pin.

[0021] Beneficial effects: The waist-shaped groove with an arc structure can better match the natural motion trajectory required by the rotating pin during the bending process, improve the accuracy and flexibility of the bending operation, and effectively reduce the wear caused by friction.

[0022] Preferably, as an improvement, the rotation range α of the waist-shaped groove is 0-200 degrees.

[0023] Beneficial effects: The rotation range of 0-200 degrees can meet the diverse bending requirements of the workpiece, and can quickly adjust the bending angle according to the different needs of the workpiece without changing tools or molds, or being limited to a fixed bending angle, greatly improving the flexibility and efficiency of production.

[0024] Preferably, as an improvement, the slope fixing block is a trapezoidal structure, and its cross section includes a triangle and a rectangle connected in one piece, and the slope of the connection between the rectangle and the triangle is β130-135 degrees.

[0025] Beneficial effects: The shape and inclination of the slope fixing block enable the workpiece to be quickly and accurately positioned and installed without the need for a complicated adjustment process. At the same time, it can reduce the wear between the workpiece and the slope fixing block during installation, thereby improving work efficiency and product quality.

[0026] Preferably, as an improvement, the second slope fixing block, the third slope fixing block and the fourth slope fixing block are distributed on the same horizontal axis, and the first slope fixing block is located at the lower right of the second slope fixing block.

[0027] Beneficial effects: The position design of different slope fixing blocks provides diversified support points, which can flexibly adapt to various complex bending requirements. The position design of the first slope fixing block can facilitate the subsequent processing of different spatial bending shapes.

[0028] Preferably, as an improvement, the horizontal spacing between adjacent slope fixing blocks is 50 mm-140 mm; and the vertical spacing between the first slope fixing block and the second slope fixing block is 80 mm-90 mm.

[0029] Beneficial effects: Accurately setting the spacing between each slope fixing block can ensure that the position of the bending part of each bend type is accurate during the bending process, which helps to achieve high-precision bending production and simplifies the positioning process. There is no need to spend a lot of time calculating or adjusting the position of each slope fixing block, which simplifies the complexity of preparation work, improves work efficiency, and ensures the consistency and repeatability of each operation.

[0030] Preferably, as an improvement, the positioning pin is equipped with a positioning pin sleeve.

[0031] Beneficial effects: The positioning pin sleeve is used to assist the bending of the workpiece, ensuring that the workpiece can be formed according to the predetermined path and arc during the bending process, avoiding unnecessary deformation or deviation of the workpiece during bending, and effectively dispersing the force applied to the workpiece, reducing defects caused by local stress concentration, thereby improving the quality of the workpiece.

[0032] The beneficial effects of this solution are as follows: (1) This solution can complete the production of various different spatial bends through a single device and a single power mechanism. In other words, this solution can complete the processing of all bends of the coupler lifting rod at one time.

[0033] (2) The motor drives the gear to rotate, driving the rotating disk, which then pulls the rotating pin to complete the bending of the workpiece, reducing labor intensity.

[0034] (3) The setting of the slope fixing block, positioning block, waist groove position and structure ensures the accuracy and consistency of the bending operation, thereby improving the quality standard of the product.

[0035] (4) The device has a simple structure, a simple operation process, strong manufacturability, and can be used repeatedly, while the manufacturing and use costs are low.

[0036] (5) Each process of the device has multiple positioning holes, positioning pins and positioning blocks / inclination fixing blocks, and the rotating parts also have a fixed motion trajectory, which greatly enhances the quality stability of the workpiece.

[0037] (5) The device has only one power mechanism (i.e., power component) and has low energy consumption.

[0038] (7) The device integrates multi-process processing functions, and multiple process production can be completed through one device. The device is small in size, occupies little space, and is mobile, making it efficient and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of a bent coupler lifting rod in an embodiment of the present invention.

[0040] Figure 2 It is a left view of the curved coupler lifting rod in the embodiment of the present invention.

[0041] Figure 3 This is a schematic structural diagram of a multi-position bending device for a coupler lifting rod provided in an embodiment of the present invention.

[0042] Figure 4 Schematic diagram of the structure of the rotating disk in the multi-station bending device of the hook lifting rod provided by the embodiment of the present invention Figure 1 .

[0043] Figure 5 Schematic diagram of the structure of the rotating disk in the multi-station bending device of the hook lifting rod provided by the embodiment of the present invention Figure 2 .

[0044] Figure 6 A top view of the main board in the multi-station bending device for the coupler lifting rod provided in an embodiment of the present invention.

[0045] Figure 7 Schematic diagram of the structure of the slope fixing block in the multi-position bending device of the coupler lifting rod provided by the embodiment of the present invention Figure 1 .

[0046] Figure 8 Schematic diagram of the structure of the waist groove in the multi-station bending device of the hook lifting rod provided in the embodiment of the present invention Figure 1 .

[0047] Fig. 9 Schematic diagram of the structure of the waist groove in the multi-station bending device of the hook lifting rod provided in the embodiment of the present invention Figure 2 .

[0048] Fig.10 It is a structural schematic diagram of the insertion of a rotating pin in the multi-position bending device of the coupler lifting rod provided in an embodiment of the present invention.

[0049] Fig.11 It is a structural schematic diagram of the hinge core insertion in the multi-station bending device of the coupler lifting rod provided in an embodiment of the present invention.

[0050] Fig.12 It is a structural schematic diagram of the first bending process in the multi-station bending device for the coupler lifting rod provided in an embodiment of the present invention.

[0051] Fig.13 It is a structural schematic diagram of the second bending process in the multi-station bending device for the coupler lifting rod provided in an embodiment of the present invention.

[0052] Fig.14It is a structural schematic diagram of the third bending process in the multi-station bending device for the coupler lifting rod provided in an embodiment of the present invention.

[0053] Fig.15 It is a structural schematic diagram of the fourth bending process in the multi-station bending device for the coupler lifting rod provided in an embodiment of the present invention.

[0054] Fig.16 It is a structural schematic diagram of the fifth bending process in the multi-station bending device for the coupler lifting rod provided in an embodiment of the present invention.

[0055] Fig.17 It is a structural schematic diagram of the sixth bending process in the multi-station bending device for the coupler lifting rod provided in an embodiment of the present invention.

[0056] Fig.18 Schematic diagram of the structure of the slope fixing block in the multi-position bending device of the coupler lifting rod provided by the embodiment of the present invention Figure 2 .

[0057] Fig.19 Schematic diagram of the structure of the slope fixing block in the multi-position bending device of the coupler lifting rod provided by the embodiment of the present invention Figure 3 .

[0058] Fig. 20 Schematic diagram of the structure of the waist groove in the multi-station bending device of the hook lifting rod provided in the embodiment of the present invention Figure 3 . DETAILED DESCRIPTION

[0059] The following is further described in detail through specific implementation methods:

[0060] The reference numerals in the drawings of the specification include: power component 1, rotating disk 2, mounting pin 3, main board 4, positioning pin 5, first positioning pin 51, second positioning pin 52, third positioning pin 53, fourth positioning pin 54, fifth positioning pin 55, sixth positioning pin 56, seventh positioning pin 57, eighth positioning pin 58, rotating pin 6, hinge core 7, workpiece 8, slope fixing block 9, first slope fixing block 901, second slope fixing block 902, third slope fixing block 903, fourth slope fixing block 904, mounting hole 10, center pin hole 1 1, first positioning hole 12, second positioning hole 13, third positioning hole 14, fourth positioning hole 15, fifth positioning hole 16, sixth positioning hole 17, seventh positioning hole 18, eighth positioning hole 19, rotating pin hole 20, waist groove 21, positioning block 22, positioning sleeve 23, No. 1 bending terminal hole position 24, center sleeve 25, No. 2 bending terminal hole position 26, No. 3 bending terminal hole position 27, No. 4 bending terminal hole position 28, No. 5 bending terminal hole position 29, bending center pin 30, bending rotating sleeve 31, No. 6 bending terminal hole position 32.

[0061] Embodiment 1:

[0062] like Figure 1 As shown in the figure: the shapes of the coupler levers are different, and they include six different curved parts. These curved parts are the first curved part, the second curved part, the third curved part, the fourth curved part, the fifth curved part and the sixth curved part from left to right. The first and last curved parts (i.e. the first curved part and the sixth curved part) are not on the same spatial plane as the other curved parts. Specifically, Figure 2 As shown, the angle between the plane where the first curve is located and the planes where the second, third, fourth and fifth curves are located is 43 degrees, the angle between the plane where the sixth curve is located and the plane where the second curve is located is 43 degrees, and the angle between the plane where the sixth curve is located and the plane where the first curve is located is 90 degrees.

[0063] like Figure 3 As shown, the multi-station bending device for the coupler lifting rod comprises a main plate 4 for supporting the workpiece 8, a positioning mechanism for fixing the workpiece 8 for bending, and a driving mechanism for processing the linear workpiece into the coupler lifting rod.

[0064] The driving mechanism is located below the main board 4. The driving mechanism includes a power component 1 and a rotating component. The rotating component is located above the power component 1. The power component 1 is composed of a motor and a gear transmission mechanism. The gear transmission mechanism is composed of a number of gears. The motor drives the gears to rotate and provides power to make the rotating component connected above it rotate clockwise or counterclockwise. That is, the power component 1 can provide appropriate rotational kinetic energy for the rotating component. The rotating component includes a rotating disk 2 and a rotating pin 6. Specifically, Figure 4 As shown, the rotating disk 2 is provided with a central rotation center hole and a plurality of rotating pin holes 20 distributed in a circumference. Figure 5 As shown, a hinge core 7 is inserted downwardly into the rotating center hole on the rotating disk 2, and a rotating pin 6 is inserted downwardly into the rotating pin hole 20. When the power component 1 provides power to drive the rotating disk 2 to rotate clockwise or counterclockwise along the center of the hinge core 7, the rotating pin 6 installed on the rotating disk 2 also rotates with the rotation of the rotating disk 2. In this embodiment, the surface roughness of the rotating disk 2 is 6.3.

[0065] like Figure 6 As shown, the main board 4 is provided with a plurality of through holes according to the requirements of the workpiece 8, and can be accurately installed at a designated position on the main board 4 through a through hole positioning mechanism and a driving mechanism. The through holes include a mounting group hole for quickly assembling the power component 1, a center pin hole 11 for the hinge core 7 to pass through, and a plurality of positioning holes for fixing the bending part of the workpiece 8. In this embodiment, the surface roughness of the through holes in the main board 4 is 6.3.

[0066] Specifically, the main board 4 is divided into a first area, a second area and a third area from left to right; when the workpiece 8 is placed on the main board, the workpiece is divided into a tail, a middle and a head from left to right. The positioning mechanism is located above the main board 4, and the positioning mechanism includes a positioning block 22, a plurality of inclination fixing blocks 9 and a plurality of positioning pins 5.

[0067] First area: A plurality of slope fixing blocks 9 are installed in the first area to locate and limit the bending part of a part of the workpiece 8. Figure 7 As shown, the slope fixing block is a trapezoidal structure, and its cross section includes a triangle and a rectangle connected in one piece. Specifically, in this embodiment, the slope fixing block 9 includes a first slope fixing block 901, a second slope fixing block 902, a third slope fixing block 903 and a fourth slope fixing block 904 from right to left. The second slope fixing block 902, the third slope fixing block 903 and the fourth slope fixing block 904 are distributed on the same horizontal axis, and the first slope fixing block 901 is located at the lower right of the second slope fixing block 902, so as to flexibly adapt to various complex bending requirements and be able to process different spatial bending types. Specifically, the head of the workpiece is pressed against the left side of the slope fixing block 9, wherein the first slope fixing block 901 is used to position the second bending type, the second slope fixing block 902 is used to position the third bending type, the third slope fixing block 903 is used to position the fourth bending type, and the fourth slope fixing block 904 is used to position the fifth bending type.

[0068] Second area: Several positioning pins 5 are installed in the second area, and the through holes are also concentrated in the second area. Specifically, the through holes include a mounting group hole for quickly assembling the power component 1, and the mounting group hole includes several mounting holes 10 evenly distributed around. The mounting holes 10 are used to firmly and accurately fix the power component 1 below the main board 4, that is, to install the driving mechanism below the second area. A center pin hole 11 matching the rotating center hole in the rotating disk 2 and for the hinge core 7 to pass through is provided in the center of the mounting group hole. There are several positioning holes distributed around the center pin hole 11 for locating the bending part of the workpiece 8. Specifically, a first positioning hole 12 is coaxially arranged above the center pin hole 11, a second positioning hole 13 and a third positioning hole 14 are coaxially arranged below the center pin hole 11 (i.e., the second positioning hole 13 is located between the center pin hole 11 and the third positioning hole 14), a fourth positioning hole 15 and a fifth positioning hole 16 are coaxially arranged on the left side of the center pin hole 11 from top to bottom, and a sixth positioning hole 17, a seventh positioning hole 18 and an eighth positioning hole 19 are coaxially arranged on the right side of the center pin hole 11 from top to bottom. The positioning holes formed by the first positioning hole 12, the second positioning hole 13, the third positioning hole 14, the fourth positioning hole 15, the fifth positioning hole 16, the sixth positioning hole 17, the seventh positioning hole 18 and the eighth positioning hole 19 are used to locate the bending part of the workpiece 8, so as to facilitate the processing of different bending types of the workpiece 8.

[0069] Its several positioning pins 5 are used to insert into the positioning holes to fix the bending part of the workpiece 8, so that the workpiece 8 is not easily displaced during the processing. In this embodiment, the positioning pins 5 are all round steel bars that are processed regularly and match the shape of the positioning holes, so that when the positioning pins 5 are inserted into the required positioning holes, the positioning pins 5 can pass smoothly and fit tightly with the positioning holes, thereby ensuring that the workpiece does not shift during the processing. In the process of processing different bending types, some positioning pins 5 are equipped with positioning pin sleeves to assist the bending of the workpiece 8, ensuring that the workpiece 8 can be formed according to the predetermined path and curvature during the bending process, avoiding unnecessary deformation or deviation of the workpiece 8 during bending, and improving the quality of the workpiece 8. Specifically, the positioning pin sleeve includes a center sleeve 25, a positioning sleeve 23 and a bending rotating sleeve 31, all of which are circular steel sleeves.

[0070] The second area is also provided with a waist-shaped groove 21, and the waist-shaped groove 21 is located on the left side of the center pin hole 11. Specifically, it is located between the center pin hole 11 and the seventh positioning hole 18, and one end of the waist-shaped groove 21 is located above the first positioning hole 12, and the other end is located between the second positioning hole 13 and the third positioning hole 14. The waist-shaped groove 21 is used to insert the rotating pin 6 and limit the rotation range of the rotating pin 6, and can accurately control the bending angle of the workpiece 8 during the bending process, so as to adapt to different types of bending production and ensure the consistency and accuracy of each bending operation. Specifically, as Figure 8 As shown, the waist groove 21 is an arc-shaped structure and matches the distribution position of the rotating pin hole 20. The rotation range α of the waist groove 21 is 0-200 degrees, which can better match the natural motion trajectory required by the rotating pin 6 during the bending process (that is, it can adapt to the rotation motion trajectory of the rotating disk 2 during the bending process), improve the accuracy and flexibility of its bending operation, and the arc edge can effectively reduce the wear of the rotating pin 6 caused by friction. Specifically, as Fig. 9 As shown, the rotation range α of the waist groove 21 is 0-200 degrees, which can quickly adjust the bending angle of the rotating pin 6 according to the different needs of the workpiece 8 without changing tools or molds, or being limited by a fixed bending angle, greatly improving the flexibility and efficiency of production. In this embodiment, the width L of the waist groove 21 is 45mm, and the surface roughness of the notch of the waist groove 21 is 6.3, which can provide sufficient friction. When the rotating pin 6 or the positioning pin 5 is inserted into the waist groove 21, it can fit tightly and is not easy to slide or loosen. Fig.10As shown, the rotating pin 6 passes downward through the rotating pin hole 20 and is inserted into the waist-shaped groove 21. When the power component 1 provides power to drive the rotating disk 2 to rotate clockwise or counterclockwise along the center of the hinge core 7, as the rotating disk 2 rotates, the rotating pin 6 installed on the rotating disk 2 and the waist-shaped groove 21 also rotates and is limited within the rotation range α of the waist-shaped groove 21. In this embodiment, the surface roughness of the rotating pin 6 is 6.3, which can increase the friction between the rotating pin 6 and the waist-shaped groove 21, and between the rotating pin 6 and the rotating disk 2, so that it can be tightly attached and not easy to slide or loosen.

[0071] Third area: The positioning block 22 is installed in the third area to position and limit the bending part of another part of the workpiece 8. During processing, the head of the workpiece 8 is pressed against the left side of the positioning block 2 to perform the first bending process.

[0072] In this embodiment, the main board 4 is a 30 mm thick rectangular steel plate, and the rotating pin 6 and the mounting pin 3 are both regularly processed round steel bars with a surface roughness of 6.3, which match the shape and size of the mounting group holes and waist-shaped grooves 21 configured on the main board 4, and can fit tightly and are not easy to loosen; the spacing between the positioning holes can be set and adjusted accordingly according to the size, size and bending requirements of the workpiece 8.

[0073] The specific implementation process is as follows:

[0074] Before processing: Fig.11 As shown, the power component 1 (i.e., the motor and the gear transmission mechanism) is placed on the ground with a height of 500mm-800mm. The main board 4 fixes the power component 1 through four mounting pins 3. Specifically, each mounting pin 3 passes through the mounting hole 10 on the main board 4 respectively to ensure that the main board 4 is firmly mounted on the power component 1; a rotating disk 2 is installed above the power component 1, and a hinge core 7 passing through the center pin hole 11 is inserted into the rotating center hole of the rotating disk 2. The rotating pin 6 passes through the waist groove 21 and is inserted into the rotating pin hole 20 in the rotating disk 2. According to requirements, a number of locating pins 5 will be inserted into any locating holes on the main board 4, and locating pin sleeves are used on the locating pins 5 at the required positions, and the locating blocks 22 and the inclination fixing blocks 9 are appropriately used to fix the bending part of the workpiece 8. Finally, the power component 1 is started to drive the rotating disk 2 to rotate, and the rotating pin 6 is driven to rotate clockwise or counterclockwise along the waist groove 21, so that the workpiece 8 is bent into shape.

[0075] During processing: 1. The processing process of the first bending process: Fig.12As shown, first, insert several positioning pins 5 into the first positioning hole 12 and the third positioning hole 14 respectively, that is, insert the first positioning pin 51 into the first positioning hole 12, and the third positioning pin 53 into the third positioning hole 14, and then place the positioning sleeve 23 on the first positioning pin 51. Subsequently, place the workpiece 8 horizontally into the main board 4, and ensure that the workpiece 8 passes between the hinge core 7 and the positioning sleeve 23, and at the same time, make the head of the workpiece 8 contact the left side of the positioning block 22. After that, start the power component 1 to drive the rotating disk 2 to rotate 150 degrees in the clockwise direction. With the rotation of the rotating disk 2, the pulled rotating pin 6 moves along the waist groove 21 and drives the head of the workpiece 8 to rotate together. When the rotating pin 6 rotates to the position of the end hole 24 of the No. 1 bend, the movement trajectory of the workpiece 8 is blocked by the third positioning pin 53 to prevent the rotating pin 6 from moving further. Finally, the rotating disk 2 drives the rotating pin 6 back to the initial position, thereby completing the production of the first bend. In this embodiment, the positioning sleeve 23 is a circular steel sleeve with the same radius as the rounded corner of the workpiece 8, and its diameter is 70 mm to ensure that the rounded corner of the workpiece after bending better meets the product design requirements.

[0076] 2. The processing of the second bending process: Fig.13 As shown, first remove the positioning block 22 to avoid blocking the moving track of the workpiece 8, and insert a number of positioning pins 5 into the first positioning hole 12 and the eighth positioning hole 19, that is, insert the first positioning pin 51 into the first positioning hole 12, and insert the eighth positioning pin 58 into the eighth positioning hole 19. Then, place the center sleeve 25 on the hinge core 7. Then, place the workpiece 8 horizontally into the main board 4, and ensure that the workpiece 8 passes between the center sleeve 25 and the first positioning pin 51, and at the same time, place the head of the workpiece 8 into the left side of the first slope fixing block 901 and press against the first slope fixing block 901, so as to achieve the initial positioning of the workpiece 8, and make the workpiece 8 not shift during the processing, thereby improving the processing efficiency and the quality of the workpiece 8. Afterwards, start the power component 1, drive the rotating disk 2 to rotate 104 degrees clockwise, and as the rotating disk 2 rotates, the pulled rotating pin 6 moves along the waist groove 21, and drives the unfixed part of the workpiece 8 to rotate together. When the rotating pin 6 rotates to the position of the end hole 24 of the second bend, the movement trajectory of the workpiece 8 is blocked by the eighth positioning pin 58 to prevent the rotating pin 6 from moving further. Finally, the rotating disk 2 returns to the initial position with the rotating rotating pin, thereby completing the production of the second bend. At the same time, the first bend and the second bend are not in the same plane, and the angle between the first bend plane and the second bend plane is 43 degrees. In this embodiment, the center sleeve 25 is a circular steel sleeve with the same radius as the bend corner of the workpiece 8, and its diameter is 80mm to ensure that the rounded corner of the workpiece after bending is more in line with the product design requirements.

[0077] 3. The processing of the third bending process: Fig.14As shown, firstly, the positioning block 22 is installed on the main board 4 and several positioning pins 5 are respectively inserted into the fifth positioning hole 16, that is, the fifth positioning pin 55 is inserted into the fifth positioning hole 16. Then, the center sleeve 25 is placed on the hinge core 7, and then the rotating pin 6 is rotated from the initial position to the tail end of the waist groove 21, and then the workpiece 8 is horizontally placed in the main board 4, and it is ensured that the workpiece 8 passes between the center sleeve 25 and the fifth positioning pin 55, and at the same time, the head of the workpiece 8 is placed on the left side of the second slope fixing block 902 and pressed against the second slope fixing block 902, so as to realize the initial positioning of the workpiece 8, and make the workpiece 8 not shift during the processing, so as to improve the efficiency and quality of the processing of the workpiece 8. After that, the power component 1 is started to drive the rotating disk 2 to rotate 73 degrees counterclockwise. As the rotating disk 2 rotates, the pulled rotating pin 6 moves along the waist groove 21 and drives the unfixed part of the workpiece 8 to rotate together until it rotates to the position of the end hole 24 of the No. 3 bend. The movement trajectory of the workpiece 8 is blocked by the positioning block 22 to prevent the rotating pin 6 from moving further. Finally, the rotating disk 2 drives the rotating pin 6 to return to the initial position, thereby completing the work of making the third bend. The third bend is coplanar with the second bend.

[0078] 4. The processing of the fourth bending process: Fig.15 As shown, first remove the positioning block 22 to avoid blocking the moving track of the workpiece 8, and insert a plurality of positioning pins 5 into the second positioning hole 13 and the sixth positioning hole 17, that is, insert the second positioning pin 52 into the second positioning hole 13, and insert the sixth positioning pin 56 into the sixth positioning hole 17. Next, put the center sleeve 25 on the hinge core 7, then rotate the rotating pin 6 from the initial position to the tail end of the waist groove 21, and then put the workpiece 8 horizontally into the main board 4, and ensure that the workpiece 8 passes between the center sleeve 25 and the second positioning pin 52, and at the same time put the head of the workpiece 8 into the left side of the third slope fixing block 903 and press against the third slope fixing block 903, so as to realize the initial positioning of the workpiece 8 and prevent the workpiece 8 from shifting during the processing. After that, the power component 1 is started to drive the rotating disk 2 to rotate 125 degrees counterclockwise. With the rotation of the rotating disk 2, the pulled rotating pin 6 moves counterclockwise along the waist groove 21, and drives the unfixed part of the workpiece 8 to rotate together, until it rotates to the position of the end hole 24 of the No. 4 bend, and the movement trajectory of the workpiece 8 is blocked by the positioning block 22, preventing the rotating pin 6 from moving further. Finally, the rotating disk 2 drives the rotating pin 6 to return to the initial position, thereby completing the production of the fourth bend, wherein the third bend is coplanar with the fourth bend.

[0079] 5. The fifth bending process: Fig.16As shown, first, insert several positioning pins 5 into the fourth positioning hole 15 and the seventh positioning hole 18 respectively, that is, insert the fourth positioning pin 54 into the fourth positioning hole 15, and insert the seventh positioning pin 57 into the seventh positioning hole 18. Then, put the center sleeve 25 on the hinge core 7, and then put the workpiece 8 horizontally into the main board 4, and ensure that the workpiece 8 passes between the center sleeve 25 and the fourth positioning pin 54, and at the same time, the head of the workpiece 8 is placed on the left side of the fourth slope fixing block 904 and pressed against the fourth slope fixing block 904, so as to achieve the initial positioning of the workpiece 8. After that, start the power component 1, drive the rotating disk 2 to rotate 53 degrees clockwise, and with the rotation of the rotating disk 2, the pulled rotating pin 6 moves clockwise along the waist groove 21, and drives the unfixed tail of the workpiece 8 to rotate together, until it rotates to the position of the No. 5 bend end hole 24, the movement trajectory of the workpiece 8 is blocked by the seventh positioning pin 57 to prevent the rotating pin 6 from moving further. Finally, the rotating disk 2 drives the rotating pin 6 to return to its original position, completing the production of the fifth bend, wherein the fourth bend is coplanar with the fifth bend.

[0080] 6. The processing of the sixth bending process: Fig.17 As shown, the bending center pin is placed on the hinge core 7, the rotating pin 6 is located at the initial position, and the rotating pin 6 is sleeved with a bending sleeve 31. Then, the workpiece 8 is placed horizontally in the main board 4, passing through the bending sleeve 31 and the bending center pin 30, so as to realize the initial positioning of the workpiece 8. After that, the power component 1 is started to drive the rotating disk 2 to rotate 180 degrees clockwise. As the rotating disk 2 rotates, the pulled rotating pin 6 moves clockwise along the waist groove 21, and drives the unfixed tail of the workpiece 8 to rotate together, until it rotates to the position of the end hole 24 of the No. 6 bend, the movement trajectory of the workpiece 8 is blocked by the waist groove 21 to prevent the rotating pin 6 from moving further. Finally, the rotating disk 2 drives the rotating pin 6 to return to the initial position, thereby completing the work of making the sixth bend, wherein the sixth bend is not in the same plane as the fifth bend, and the angle between the sixth bend plane and the fifth bend plane is 43 degrees. In this embodiment, the bending rotating sleeve 31 is a circular steel sleeve with the same radius as the workpiece bending fillet, and its diameter is 197 mm to ensure that the workpiece fillet after bending better meets the product design requirements.

[0081] In this solution, the multi-station bending device for the coupler lifting rod breaks the technical prejudice in the prior art that in order to realize the production of various complex bends, it is necessary to rely on multiple molds or power mechanisms, each of which is only for a specific type of bend. That is, it breaks the technical prejudice that a device or a single power mechanism cannot simultaneously have the ability to produce a variety of different bends, and breaks the technical prejudice that simplicity and versatility cannot be achieved at the same time.

[0082] This solution, through the careful design of the main board 4, the positioning mechanism and the driving mechanism, realizes that a single device and a single power mechanism can complete the production of various different spatial bending shapes, reducing the need for multiple tools (i.e., multiple molds and power mechanisms), and reducing manufacturing and maintenance costs. Specifically, the bending position of the workpiece 8 is determined by the positioning pin 5, the slope fixing block 9, and the positioning block 22. The motor drives the gear to rotate, driving the rotating disk 2 to rotate, and then pulling the rotating pin 6 to rotate to complete the bending of the workpiece 8, reducing labor intensity. During the whole process, each process has multiple positioning pins 5 and positioning components (i.e., the positioning block 22 and the slope fixing block 9) and a fixed rotational motion trajectory, and can also accurately control the movement and position of each component, ensuring that the workpiece 8 can be processed according to the predetermined shape, thereby ensuring the high precision and quality stability of the workpiece 8 and enhancing the consistency of the quality of the workpiece 8. In addition, there is only one power mechanism, and the energy consumption is low.

[0083] In addition, through the combination of the inclination fixing block 9 and the positioning block 22, the device can flexibly adjust the processing angle and position to meet the needs of different spatial bends, which significantly improves the versatility and efficiency of the device. The structural design of the inclination fixing block 9 and the positioning block 22 reduces the errors caused by vibration or displacement of external factors during the processing. When processing complex bends, it can ensure the consistency and repeatability of the processing and improve the processing accuracy of the bend. The coordinated use of the positioning pin 5 and the positioning hole makes the switching of the device between different bends faster and easier. The operator only needs to adjust the position of the positioning pin to quickly switch to another processing mode, which reduces the adjustment time of the device and improves production efficiency. The precise coordination of the positioning pin 5 and the positioning hole ensures high-precision positioning during the processing, effectively reduces processing errors, and ensures the processing quality of each bend, especially in complex spatial bends, which can ensure the accuracy of each angle.

[0084] This solution can complete the production of all bending processes of multiple different spaces of the entire hook lifting rod with one device, which has high adjustability and precision, that is, a set of devices can form multiple different space bendings at one time, ensuring the consistency and repeatability of processing, and has high precision. At the same time, the equipment is small in size, occupies little space, can be used mobile, and has high efficiency and convenience; as well as its simple structure, strong manufacturability, and can be used repeatedly, with low manufacturing and use costs.

[0085] Implementation 2:

[0086] The difference between this embodiment and the first embodiment is that the inclination angle β at the connection between the rectangle and the triangle is 130-135 degrees.

[0087] Specifically, Fig.18As shown, the slope fixing block 9 is a right-angled trapezoidal structure, and its cross section includes a rectangle and an integrally connected right-angled triangle. The rectangle is located below the right-angled triangle, and the inclination angle β at the connection between the rectangle and the right-angled triangle is 133.5 degrees. The right-angled triangle includes a hypotenuse, a base, and a high side. A right angle is formed between the base and the high side, and the high side and the hypotenuse are connected in an arc shape, so that when the workpiece 8 is installed, it is not easy to wear the workpiece 8, thereby improving the production quality of the workpiece 8. When installing the slope fixing block 9, the hypotenuse of the slope fixing block 9 is installed inward (i.e., toward the position of the workpiece 8), so that when the position of the workpiece 8 is adjusted, the direction of moving the workpiece 8 can be accurately controlled, providing the positioning accuracy of the entire device, and the design of the hypotenuse is conducive to dispersing the force applied to the slope fixing block 9, reducing the direct contact area, thereby reducing the wear and friction on the workpiece 8.

[0088] Embodiment three:

[0089] The difference between this embodiment and the first embodiment is that the installation position of the slope fixing block 9 is the same as the spatial angle of the workpiece 8; the horizontal spacing between adjacent slope fixing blocks 9 is 50mm-140mm; the vertical spacing between the first slope fixing block 901 and the second slope fixing block 902 is 80mm-90mm.

[0090] Specifically, the spacing C3 between the first slope fixing block 901 and the second slope fixing block 902 is 134.84 mm, and the vertical spacing H between the first slope fixing block 901 and the second slope fixing block 902 is 85 mm. The spacing C2 between the second slope fixing block 902 and the third slope fixing block 903 is 79 mm, and the spacing C1 between the third slope fixing block 903 and the fourth slope fixing block 904 is 62 mm. The installation position of the slope fixing block 9 matches the spatial angle of the workpiece 8, so that six different bends can be processed and the required angle accuracy requirements can be met. At the same time, the spatial layout is optimized, and the situation where the first and last bends (i.e., the first bend and the sixth bend) are not on the same spatial plane as other bends can be processed, so as to achieve efficient processing of complex shapes, thereby effectively improving the production efficiency and production quality of the workpiece.

[0091] Embodiment 4:

[0092] The difference between this embodiment and the first embodiment is that in this embodiment, the longitudinal cross-section of the waist-shaped groove 21 is a trapezoid that is wide at the top and narrow at the bottom.

[0093] Specifically, the notch of the waist-shaped groove 21 gradually decreases inward from top to bottom, so that when the rotating pin 6 is inserted into the notch of the waist-shaped groove 21, it can be quickly inserted and gradually clamped in the notch. At the same time, the lower bottom of the notch matches the shape and size of the rotating pin hole 20 in the rotating disk 2, ensuring that the rotating pin 6 can smoothly pass through the waist-shaped groove 21 and be inserted into the rotating pin hole 20. And the setting of the upper bottom can effectively reduce the wear between the rotating pin 6 and the upper bottom of the waist-shaped groove 21 when the rotating pin 6 rotates clockwise or counterclockwise.

[0094] This solution not only realizes the rapid insertion and firm clamping of the rotating pin 6 and prevents the workpiece 8 from being dislocated, but also reduces the friction and wear between the rotating pin 6 and the waist-shaped groove 21 through the structural design of the waist-shaped groove 21 .

[0095] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A multi-position bending device for the coupler lifting rod, the coupler lifting rod includes the first bending type, the second bending type, the third bending type, the fourth bending type, the fifth bending type and the sixth bending type from left to right, characterized in that: It includes a main board for supporting a workpiece, a positioning mechanism for fixing a bent portion of the workpiece, and a driving mechanism for processing a linear workpiece into a hook lifting rod; the main board includes a first area, a second area, and a third area from left to right; The positioning mechanism is located above the main board, and the positioning mechanism includes a positioning block; the positioning block is located in the third area and is used to contact the head of the workpiece to position the first bend; a plurality of inclination fixing blocks are provided on the left side of the positioning block, and are located in the first area, and are used to fix the head of the workpiece to position and fix the bend; wherein the inclination fixing block includes a fourth inclination fixing block, a third inclination fixing block, a second inclination fixing block and a first inclination fixing block in the direction of the second area; the first inclination fixing block is used to position and fix the second bend, the second inclination fixing block is used to position and fix the third bend, the third inclination fixing block is used to position and fix the fourth bend, and the fourth inclination fixing block is used to position and fix the fifth bend; a plurality of positioning pins and positioning holes for the positioning pins to pass through are provided on the right side of the inclination fixing block, and are located in the second area, and the positioning pins are inserted into the required positioning holes according to different bends for fixing different bending parts and for positioning and fixing the sixth bend; The driving mechanism is located below the second area, and includes a power component and a rotating component; the power component is used to provide power to make the rotating component connected above it rotate clockwise or counterclockwise, thereby driving the unfixed part of the workpiece to rotate and form bending shapes in different spaces.

2. The multi-position bending device for the hook lifting rod according to claim 1 is characterized in that: The main board also includes a center pin hole; the rotating component includes a rotating disk and a rotating pin for bending the bending part of the workpiece, the rotating disk is provided with a rotating center hole and rotating pin holes distributed in a circumference, the center pin hole is located in the second area and above the rotating center hole, a hinge core is provided in the rotating center hole, the hinge core passes through the center pin hole and is inserted into the rotating center hole, the rotating pin is located in the rotating pin hole, the power component provides power to drive the rotating disk to rotate clockwise or counterclockwise along the hinge core, and under the traction of the rotating disk, the rotating pin also rotates to bend the bending part of the workpiece.

3. The multi-position bending device for the coupler lever according to claim 1, characterized in that: The power component includes a motor and a gear transmission mechanism.

4. The multi-position bending device for the hook lifting rod according to claim 2 is characterized in that: The main board is also provided with a waist-shaped groove, which is located in the third area and on the right side of the hinge core, and the rotating pin passes through the waist-shaped groove.

5. The multi-position bending device for the hook lifting rod according to claim 4 is characterized in that: The waist-shaped groove is an arc-shaped structure, which is used to limit the rotation range α of the rotating pin.

6. The multi-position bending device for the hook lifting rod according to claim 5, characterized in that: The rotation range α of the waist-shaped groove is 0-200 degrees.

7. The multi-position bending device for the hook lifting rod according to claim 1 is characterized in that: The slope fixing block is a trapezoidal structure, and its cross section includes a triangle and a rectangle connected in one piece, and the slope β of the connection between the rectangle and the triangle is 130-135 degrees.

8. The multi-position bending device for the hook lifting rod according to claim 1 is characterized in that: The second slope fixing block, the third slope fixing block and the fourth slope fixing block are distributed on the same horizontal axis, and the first slope fixing block is located at the lower right of the second slope fixing block.

9. The multi-position bending device for the hook lifting rod according to claim 1, characterized in that: The horizontal spacing between adjacent slope fixing blocks is 50 mm-140 mm; the vertical spacing between the first slope fixing block and the second slope fixing block is 80 mm-90 mm.

10. The multi-position bending device for the hook lifting rod according to claim 1, characterized in that: The positioning pin is provided with a positioning pin sleeve for assisting forming.

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