Hook Automatic Bending Production Line and Method for Manufacturing Hooks Using the Production Line

Abstract

The present invention discloses an automatic hook bending continuous production line and a method for manufacturing hooks using the production line, comprising a frame mainly used for installing a feeding device, a bending device fixedly installed on the frame, including a guide slide for receiving a rod delivered by the feeding device, a first bending mechanism located in the extension direction of the end of the guide slide, and a second bending mechanism opposite to the first bending mechanism, wherein the two bending mechanisms share a set of power sources, and are obviously different from the known technology in that in the process from the first bending to the second bending, the bent part does not separate from the mold, thereby ensuring the parallelism of the two ends, and the positioning of the workpiece before the second bending is achieved by relying on the displacement of the forming rotary mold, which is equivalent to the first bending being used as the length reference for the second bending, thereby ensuring the consistency of the length, and utilizing the second bending action to achieve demolding from the first bending, thereby greatly reducing the overall demolding difficulty.

Description

Technical Field

[0001] The invention belongs to the technical field of hooks made of bar materials, and in particular relates to an automatic bending continuous production line for hooks and a method for manufacturing hooks by using the production line. Background Art

[0002] Attached Figure Seven The hook 003 is widely used for hanging bird cages and lamps. The hook 003 is made of a thin and long rod, generally round steel, and the shapes of its two ends resemble pig tails, so it is also called a pig tail hook. When in use, one end is placed outside the vertical fixed rod by wrapping around the opening position, and the other end is used to hang the bird cage, lamp, etc. After hanging, the hook can provide balanced and stable support under gravity;

[0003] The existing processing of hook 003 generally uses a bending machine with authorization announcement number CN103170556B, which is named a bending spiral steel bar. Similar equipment is manually operated for processing. During operation, one end of the bar needs to be pushed into the bending machine for bending and then taken out, and then the other end is put into the same bending. This processing method has two disadvantages in terms of processing quality: first, the parallelism of the bending parts at both ends depends on the operator's technique, and the parallelism cannot be reliably guaranteed; second, when the second bending is performed, it is completed by relying on the front end of the bar to contact the limit of the mold. This method is equivalent to accumulating the processing error of the cutting length to the overall length of the hook; these two defects are not easy to manifest for places where the hook is used alone or does not pursue neat arrangement, but when the integrity is high, the hook will be uneven, affecting the appearance;

[0004] Limitations: It is not easy to produce an automated continuous processing production line for this type of hook, mainly because the length of the rod is getting shorter during the bending process, and the bent part is spiral in structure, so the height of the unbent part of the rod is also changing. In addition, since the bending directions at both ends are relative, demoulding is not easy to overcome. For this reason, our company's R&D personnel have designed a set of devices that can solve the above defects based on the characteristics of the product. Summary of the invention

[0005] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a continuous production line for automatic hook bending, in which the bending device has structural and functional characteristics that can overcome the above-mentioned shortcomings of the prior art.

[0006] The object of the present invention is achieved by the following technical solutions: An automatic hook bending continuous production line includes a frame mainly used for installing a feeding device, a bending device fixedly installed on one side of the frame. The bending device includes a guiding slide for receiving the bar passed by the feeding device, a first bending mechanism located in the extending direction at the end of the guiding slide, a second bending mechanism opposite to the first bending mechanism and located on one side of the guiding slide. The two bending mechanisms share a set of power sources, and a slide is arranged between the first bending mechanism and the second bending mechanism; The first bending mechanism includes a first forming rotary die and a first spiral guiding die rotatably fixed on the slide, and the second bending mechanism includes a second forming rotary die and a second spiral guiding die rotatably fixed on the slide; A retaining pin is fixed at the starting position of both the first forming rotary die and the second forming rotary die, and a limiting portion is provided in the retaining pin of the first forming rotary die.

[0007] The first bending mechanism is arranged in the conventional forward direction, and the second bending mechanism is arranged in the reverse direction. After one end of the bar is processed to form a workpiece, the first forming rotary die is set to be slidable outwards, and at the same time, the second forming rotary die can be lifted upwards. After lifting, a gap is formed in the middle for the workpiece to pass through. The two spiral guiding films are installed on the same slide. By moving the slide, the workpiece is pushed to the position between the second forming rotary die and the second spiral guiding die by the first spiral guiding die, and then the concave spiral surface of the second spiral guiding die is pressed against the bar at the starting position of the second forming rotary die by moving the slide. The power source is started, and the second forming rotary die rotates to complete the processing of the other end of the workpiece.

[0008] Preferably, the first forming rotary die is designed into two parts, the lower part is a sliding base that can be translated outwards, and the upper part is a flipping seat hinged to the sliding base. A rotary die is rotatably sleeved on the flipping seat. The bending device further includes a power mechanism and a sliding component arranged to match the sliding movement of the first forming rotary die. The power mechanism is a cylinder component, and its piston head is fixedly connected to the sliding base. Due to the reason that a spiral shape needs to be formed at the bending part, the bar needs to enter the first forming rotary die obliquely. In this way, after the bar is bent, the straight section of the bar is inclined upwards. Therefore, the first forming rotary die is designed into two parts and can be slid outwards to enable the straight section of the bar to enter the second forming rotary die conveniently and smoothly.

[0009] Preferably, an elastic band is connected between the flipping seat and the sliding base.

[0010] Preferably, the power source includes a driving motor, a first output end provided on the output shaft of the driving motor, and a second output end that obtains power by being driven through a transmission mechanism; a shaft detachment mechanism is provided below the second output end, and the end of the shaft that cooperates with the second output end is provided with a spline. The shaft detachment mechanism is detachably and fixedly connected to the shaft, and a key groove matching the spline is provided at the inner top of the rotary die. The shaft detachment mechanism is powered by a cylinder. After being connected to the shaft end, it moves up and down as a way to connect the rotary die. For this, it just separates on the power source without affecting the rotary die. That is, when making the second bend, since the shaft is already in the detached state, the first forming rotary die will not rotate.

[0011] Preferably, a stop block is fixedly provided on the sliding component, and the stop block partially covers and is slightly higher than the disc surface of the rotary die.

[0012] Preferably, a lifting component is provided on the side of the sliding table. The lifting component includes a lifting motor fixed at the lower end, a screw rod transmission member, and a horizontal mounting seat fixedly connected to the second forming rotary die. The free end of the second forming rotary die has a spline extending downward for a certain length. A coupling is connected to the upper part of the first output end. The free end of the second forming rotary die engages with the coupling during the descending process driven by the lifting motor and separates from the coupling during the ascending process.

[0013] Preferably, elastic resetting members are provided inside the first helical guide die and the second helical guide die and at the connection part with the sliding table.

[0014] Preferably, a picking manipulator is fixedly provided on the sliding table.

[0015] Preferably, an auxiliary lifting component is provided in the guiding sliding table.

[0016] In view of the defects existing in the above-mentioned prior art, another technical problem to be solved by the present invention is to provide a method for manufacturing hooks using an automatic bending continuous production line for hooks;

[0017] The invention object of the present invention is achieved through the following technical solutions, and the steps are as follows:

[0018] S1. The bar stock comes to the guiding sliding table with the feeding device and slides to the limiting part along the slope of the sliding table;

[0019] S2. The sliding table starts to move, so that the concave surface of the first helical guide die is in close contact with the bar stock. Then the driving motor is started, and the first forming rotary die rotates counterclockwise. At the same time, the auxiliary lifting component lifts upward to assist. One end of the bar stock is formed by winding around the outer circumference of the first forming rotary die to form a semi-finished workpiece;

[0020] S3. Start the lifting motor to drive the horizontally installed seat to move the second forming rotary die upward until there is a gap. Then start the slide table to make the first spiral guide die push the workpiece through the gap and keep it at the position of the outer diameter of the first spiral guide die. Start the shaft disengaging mechanism to disengage the shaft, and then start the cylinder assembly to slide the first forming rotary die outward to the set position. Keep the pressure stable and immobile. Start the lifting motor to lower the horizontally installed seat until the second forming rotary die engages with the coupling. At this time, the latch on the second forming rotary die just catches on the outside of the workpiece. Then start the slide table to move the second spiral guide die until its spiral groove is in full contact with the workpiece;

[0021] S4. Start the driving motor. While the other end of the workpiece is being formed around the outer periphery of the second forming rotary die, the pulling of the workpiece causes the flipping seat to flip. At the same time, the cylinder assembly loses pressure, and the downward force of the workpiece forces the first forming rotary die to retreat further. One bent part of the workpiece is completed and separated, and at the same time, the other bent part of the workpiece is also completed;

[0022] S5. Start the picking manipulator to clamp the workpiece, and then start the lifting motor to rise, and the workpiece is taken out smoothly. The flipping seat, the first spiral guide die, and the second spiral guide die reset under the action of the set elastic force, and other moving parts return to the initial position under the corresponding power sources.

[0023] In summary, compared with the prior art, the present invention has the following advantages:

[0024] The bending device of the present invention is provided with two opposite bending mechanisms. The two bending mechanisms share a set of power sources. A slide table is arranged between the two bending mechanisms, and the two spiral guide dies supporting the two bending mechanisms are respectively arranged at the corresponding positions of the slide table; the cooperation between the forming rotary die and the spiral guide die in the bending mechanism is realized by moving the slide table;

[0025] One of the two bending mechanisms is set conventionally in the forward direction, and the other is set in the reverse direction. After one end of the bar is processed to form a workpiece, the forming rotary die set in the forward direction is set to be slidable outward, and at the same time, the forming rotary die set in the reverse direction can be lifted upward. After lifting, a gap is formed in the middle for the workpiece to pass through. By moving the slide table, the workpiece is pushed to the position between the other forming rotary die and the spiral guide die by using the spiral guide die, so as to realize the bending processing of both ends. Obviously different from the known technology is that during the process from the first bending to the second bending, the bent part does not disengage from the die, so the parallelism of both ends is guaranteed. The position positioning of the workpiece before the second bending is realized by the displacement of the forming rotary die. The first bending is equivalent to the length reference for the second bending, so the consistency of the length is also guaranteed. In addition, the action of the second bending is used to realize the demolding from the first bending, so the overall demolding difficulty is also greatly reduced. Brief Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the present invention;

[0027] Figure 2 is a schematic structural diagram of the power source;

[0028] Figure 3 is a schematic structural diagram of the bar entering the bending device;

[0029] Figure 4 is a schematic structural diagram of being transferred to the second forming rotary die after one end is bent;

[0030] Figure 5 is a schematic structural diagram of the second forming rotary die during the rotating operation (the frame body and part of the lifting assembly are hidden);

[0031] Figure 6 is a schematic structural diagram of the hook with picking after being bent (the frame body and part of the lifting assembly are hidden);

[0032] Figure 7 is a schematic structural diagram of the hook.

[0033] Markings in the figure:

[0034] Frame body 1, auxiliary lifting assembly 10, roller 11, swing arm 12, power cylinder 13, bending device 2, bar 001, workpiece 002, hook 003, guide slide 21, first bending mechanism 22, second bending mechanism 23, first forming rotary die 24, sliding base 241, flipping seat 242, first spiral guide die 25, second forming rotary die 26, second spiral guide die 27, pin 01, limiting part 02, elastic band 03, shaft 04, power source 3, drive motor 31, first output end 32, transmission mechanism 33, second output end 34, cylinder assembly 4, shaft ejection mechanism 5, sliding assembly 6, stop block 61, slide 7, lifting assembly 8, lifting motor 81, screw drive 82, horizontal mounting base 83, picking manipulator 9. Detailed implementation manners

[0035] The present invention will be further described below in conjunction with the embodiments shown in the drawings:

[0036] Embodiment 1

[0037] The present disclosure provides an automatic bending continuous production line for hooks, including a frame 1 mainly used for installing a feeding device, a bending device 2 fixedly installed on one side of the frame 1. The bending device 2 includes a guiding slide 21 for receiving a rod 001 transmitted by the feeding device, a first bending mechanism 22 located in the extending direction of the end of the guiding slide 21, a second bending mechanism 23 opposite to the first bending mechanism 22 and located on one side of the guiding slide 21. The two bending mechanisms share a set of power sources 3, and a slide 7 is arranged between the first bending mechanism 22 and the second bending mechanism 23. The first bending mechanism includes a first forming rotary die 24 and a first helical guiding die 25 rotatably fixed on the slide 7. The second bending mechanism includes a second forming rotary die 26 and a second helical guiding die 27 rotatably fixed on the slide 7. There are pins 01 at the starting positions of the first forming rotary die 24 and the second forming rotary die 26, and a limiting portion 02 is provided in the pin 01 of the first forming rotary die 24.

[0038] The first bending mechanism 22 is arranged in the conventional forward direction. That is, when the bar 001 is bent for the first time, the starting position is at the bottom, and the whole moves upward along the pitch of the helix. The second bending mechanism 23 is arranged in the reverse direction. That is, when the other end of the bar 001 is bent, the starting position is at the top, and the whole bar 001 moves downward along the pitch of the helix. After the bending at both ends is completed, it basically returns to the initial height position, and the related components can be arranged more compactly in space. For the convenience of description, the bar 001 that has been processed or partially processed will be called the workpiece 002 hereinafter. To facilitate the rapid transfer of the workpiece 002 to the second bending mechanism 23 after the first bending is completed, the first forming rotary die 24 is set to be slidable outwards, and at the same time, the second forming rotary die 26 can be lifted upward. After the lifting, a gap is formed in the middle for the workpiece 002 to pass through. The two helical guide films are installed on the same slide table 7, and the distance between the forming rotary die and the helical guide film is controlled by the movement of the slide table 7 to achieve the purpose of meshing or separating the helical guide film from the bar.In this way, after the first bending, instead of taking out the workpiece, the workpiece 002 can slide outwards to a set position together with the first forming rotary die 24. The second forming rotary die 26 is lifted upwards, the sliding table 7 moves, and the workpiece is pushed by the first helical guide die 25 to the position between the second forming rotary die 26 and the second helical guide die 27. Then, through the movement of the sliding table 7, the concave helical surface of the second helical guide die 27 is closely attached to the bar at the starting position of the second forming rotary die 26. The power source 3 is started, and the second forming rotary die 26 rotates. At this time, the workpiece 002 will move along the force direction under the rotation of the rotary die. At the same time, under the guidance of the second helical guide die 27, the whole workpiece 002 also moves downward. Therefore, the first forming rotary die 24 needs to be designed into two parts, the lower part is the sliding base 241 which can slide out horizontally, and the upper part is the flipping seat 242 which is hinged to the sliding base 241. The rotary die 243 is sleeved on the flipping seat 242. At the same time, a corresponding power mechanism and a sliding component 6 need to be set for the sliding movement of the first forming rotary die 24. The power mechanism is preferably a cylinder component 4, and its piston head is fixedly connected to the sliding base 241. Before the second bending of the workpiece, the cylinder component 4 pulls the first forming rotary die 24 to the set position. When the bending is in progress, the pulling force causes the flipping seat 242 to flip. At this time, the cylinder component 4 needs to be in a pressure-holding state to ensure that the flipping seat 242 flips relative to the sliding base 241. When the flipping seat 242 generates an inclination angle, the cylinder component 4 needs to switch from the pressure-holding state to a non-pressure state, that is, the sliding base 241 needs to obtain a free movement space. This is because during the overall movement and downward movement of the workpiece 002, a accommodating space needs to be provided for it. These two displacements of the workpiece 002 cause the flipping seat 242 to quickly fall down, and the bending part of the workpiece 002 applies a downward pressure to the rotary die 243, causing the sliding base 241 to move further towards the side of the cylinder component 4. In this way, the workpiece 002 can be completely separated from the first bending mechanism 22, and to separate from the second bending mechanism 23, only the second forming rotary die 26 needs to be lifted upwards. Before the second bending, since the workpiece 002 has not been separated from the rotary die 243, its parallelism is guaranteed during the second bending. And when the workpiece 002 is bent for the second time, its position is determined by the cylinder component 4 driving the sliding base 241. In this way, the overall length of the workpiece 002 is also guaranteed. (The cumulative error in its processing is transferred to the bending part).

[0039] In order to make the above-mentioned flipping seat 242 reset itself after falling down, an elastic band 03 is connected between the flipping seat 242 and the sliding base 241;

[0040] Figure 2As shown in the figure, the power source 3 includes a drive motor 31, a first output end 32 provided on the output shaft of the drive motor 31, and a second output end 34 that obtains power by being driven by a transmission mechanism 33; to meet the requirement of the first forming rotary die 24 sliding outwards, a shaft disengaging mechanism 5 is provided below the second output end 34, and the end of the shaft 04 that cooperates with the second output end 34 is provided with a spline. The shaft disengaging mechanism 5 is detachably and fixedly connected to the shaft 04. A keyway matching the spline is provided at the inner top of the rotary die 243. When the first forming rotary die 24 needs to slide outwards, the shaft disengaging mechanism 5 pulls the shaft 04 downwards to disengage from the first forming rotary die 24, and the first forming rotary die 24 can then move outwards. When the first forming rotary die 24 needs to return to its position, the shaft disengaging mechanism 5 pushes the shaft back. Here, in order to ensure smooth and proper pushing back of the shaft, a stop block 61 is fixedly provided on the sliding assembly 6. After the first forming rotary die 24 returns to its position, the stop block 61 partially covers and is slightly higher than the disc surface of the rotary die 243. In this way, when the shaft disengaging mechanism 5 pushes the shaft into the rotary die 243, the stop block 61 plays a role in limiting the rotary die 243. The drive motor 31 should be a servo motor or a system with a sensor-matching function to detect and self-adjust the correct positions of the detent pins 01 in the first forming rotary die 24 and the second forming rotary die 26 before starting.

[0041] To realize the lifting of the second forming rotary die 26, a lifting assembly 8 is provided on the side of the sliding table 7. The fixed part of the lifting assembly 8 is fixedly connected to the fixed structure for installing the drive motor 31. The lifting assembly 8 includes a lifting motor 81 fixed at the lower end, a lead screw transmission member 82, and a horizontal mounting seat 83 fixedly connected to the second forming rotary die 26. The free end of the second forming rotary die 26 has a downwardly extending spline. The first output end 32 is connected to a coupling. The free end of the second forming rotary die 26 engages with the coupling during the downward movement driven by the lifting motor 81 to obtain rotational power, and separates from the coupling during the upward movement, so that the workpiece 002 can pass through.

[0042] Before the bar 001 or the workpiece 002 is bent, the corresponding self-rotating first helical guide die 25 or second helical guide die 27 needs to be limited to a proper position, that is, the concave surface of the helix is in full contact with the surface of the bar 001 or the workpiece 002. For this purpose, torsion springs or coil springs are provided inside the first helical guide die 25 and the second helical guide die 27 and at the connection part with the sliding table 7 to be in or return to the correct position in the natural state and after the external force disappears.

[0043] As a continuous production line, after the workpiece 002 is processed, a picking manipulator 9 is fixedly provided on the sliding table 7 for convenient picking.

[0044] Since the bar 001 is still in a relatively long state before the first bending, an auxiliary lifting assembly 10 is provided in the guiding slide 21. The auxiliary lifting assembly 10 includes a roller 11 that contacts the surface of the bar 001 for lifting, a rotating arm 12 for mounting the roller 11 and connecting the drive shaft, and a power cylinder 13. When the first bending is carried out, the power cylinder 13 acts synchronously, and the roller 11 lifts the bar 001 upward to prevent the end bending deflection from being too large and disengaging from the guiding die.

[0045] Combined with the attached Figures 1 - 7 , the method steps for manufacturing the hook 003:

[0046] S1. The bar 001 comes to the guiding slide 21 with the feeding device and slides to the limiting part 02 along the slope of the slide 21; Refer to Figure 3 ;

[0047] S2. The slide 7 starts to move, making the concave surface of the first spiral guiding die 25 closely contact with the bar 001. Then, the driving motor 31 is started, and the first forming rotating die 24 rotates counterclockwise. At the same time, the auxiliary lifting assembly 10 assists in lifting upward, and one end of the bar 001 is formed by winding around the outer periphery of the first forming rotating die 24 to form a semi-finished workpiece 002;

[0048] S3. The lifting motor 81 is started to drive the horizontal mounting seat 83 to move the second forming rotating die 26 upward until there is a gap. The slide 7 is started, and the first spiral guiding die 25 pushes the workpiece 002 through the gap and keeps it at the position of the outer diameter of the first spiral guiding die 25. The shaft disengaging mechanism 5 is started to disengage the shaft 04. Then, the cylinder assembly 4 is started to slide the first forming rotating die 24 outward to a set position and keep it pressurized and stable. The lifting motor 81 is started, and the horizontal mounting seat 83 moves downward until the second forming rotating die 26 engages with the coupling. At this time, the pin 01 on the second forming rotating die 26 just catches the outside of the workpiece 002. Then, the slide 7 is started to move the second spiral guiding die 27 to make its spiral groove fully contact with the workpiece 002;

[0049] S4. The driving motor 31 is started. While the other end of the workpiece 002 is being formed by winding around the outer periphery of the second forming rotating die 26, the pulling of the workpiece 002 causes the turning seat 242 to turn. At the same time, the cylinder assembly 4 loses pressure, and the downward force of the workpiece 002 forces the first forming rotating die 24 to retreat further. One bending part of the workpiece 002 is completed and disengaged, and at the same time, the other bending part of the workpiece 002 is also manufactured;

[0050] S5. The picking manipulator 9 is started to clamp the workpiece 002, and then the lifting motor 81 is started to rise, and the workpiece 002 is successfully taken out. The turning seat (242), the first spiral guiding die (25), and the second spiral guiding die (27) are reset under the action of the set elastic force, and other moving parts return to the initial position under the corresponding power sources.

[0051] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An automatic bending continuous production line for hooks, comprising a frame (1) mainly used for installing a feeding device, and a bending device (2) fixedly installed on one side of the frame (1), characterized in that, The bending device (2) comprises a guide slide (21) for receiving a rod (001) delivered by a feeding device, a first bending mechanism (22) located in the extension direction of the end of the guide slide (21), a second bending mechanism (23) opposite to the first bending mechanism (22) and located on one side of the guide slide (21), the two bending mechanisms share a set of power sources (3), and a slide (7) is arranged between the first bending mechanism (22) and the second bending mechanism (23); the first bending mechanism comprises a first forming rotary die (24) and a first helical guide die (25) rotatably fixed on the slide (7), and the second bending mechanism comprises a second forming rotary die (26) and a second helical guide die (27) rotatably fixed on the slide (7); the starting positions of the first forming rotary die (24) and the second forming rotary die (26) are both fixed with a latch (01), wherein the latch (01) of the first forming rotary die (24) has a limiting portion (02); The first bending mechanism (22) is conventionally set in the forward direction, and the second bending mechanism (23) is set in the reverse direction, so that the rod material basically returns to the initial height position after the bending of both ends is completed; after one end of the rod material (001) is processed, the workpiece (002) is formed, and the first forming rotary die (24) is set to be able to slide outward, and the second forming rotary die (26) can be lifted upward. After the lifting, a gap is formed in the middle for the workpiece (002) to pass through, so that in the process from the first bending to the second bending, the bent part does not leave the die, thereby ensuring the parallelism of the bending at both ends; the two spiral guide films are installed on the same slide (7), and the first spiral guide film is used to move the slide (7) to move the first spiral guide film. The spiral guide die (25) pushes the workpiece to a position between the second forming rotary die (26) and the second spiral guide die (27). The position of the workpiece before the second bending is achieved by the displacement of the forming rotary die, so that the first bending is used as the length reference of the second bending to ensure the consistency of product length. Then, by moving the slide (7), the concave spiral surface of the second spiral guide die (27) and the rod are pressed against the starting position of the second forming rotary die (26). The power source (3) is started, and the second forming rotary die (26) is rotated to complete the processing of the other end of the workpiece (002). At the same time, the second bending action is used to realize demoulding from the first bending, thereby reducing the overall demoulding difficulty.

2. The automatic bending continuous production line for hooks according to claim 1, characterized in that, The first forming rotary die (24) is designed to be divided into two parts, the lower part is a sliding base (241) that can slide out horizontally, and the upper part is a flip seat (242) hinged to the sliding base (241), and a rotating die (243) is rotatably mounted on the flip seat (242). The bending device (2) also includes a power mechanism and a sliding assembly (6) arranged to match the sliding action of the first forming rotary die (24), and the power mechanism is a cylinder assembly (4), and its piston head is fixedly connected to the sliding base (241).

3. The automatic bending continuous production line for hooks according to claim 2, wherein An elastic band (03) is connected between the flip seat (242) and the sliding base (241).

4. The automatic bending continuous production line for hooks according to claim 2, wherein The power source (3) includes a driving motor (31), a first output end (32) provided on the output shaft of the driving motor (31), and a second output end (34) that obtains power by being driven through a transmission mechanism (33); an axial disengaging mechanism (5) is provided below the second output end (34), and the end of the shaft (04) that cooperates with the second output end (34) is provided with a spline. The axial disengaging mechanism (5) is detachably and fixedly connected to the shaft (04), and a keyway matching the spline is provided at the inner top of the rotary die (243).

5. The automatic bending continuous production line for hooks according to claim 2, characterized in that, A stop block (61) is fixedly provided on the sliding assembly (6), and the stop block (61) partially covers and is slightly higher than the disk surface of the rotary die (243).

6. The automatic bending continuous production line for hooks according to claim 2, characterized in that A lifting assembly (8) is provided on the side of the sliding table (7). The lifting assembly (8) includes a lifting motor (81) fixed at the lower end, a lead screw transmission member (82), and a horizontal mounting base (83) fixedly connected to the second forming rotary die (26). The free end of the second forming rotary die (26) has a downwardly extending spline. The upper part of the first output end (32) is connected with a coupling. The free end of the second forming rotary die (26) engages with the coupling during the descending process driven by the lifting motor (81), and separates from the coupling during the ascending process.

7. The automatic bending continuous production line for hooks according to claim 1, characterized in that Elastic reset members are provided inside the first helical guide die (25) and the second helical guide die (27) and at the connection part with the sliding table (7).

8. The automatic bending continuous production line for hooks according to claim 1, characterized in that A pick-up robotic arm (9) is fixedly provided on the sliding table (7).

9. The automatic bending continuous production line for hooks according to claim 1, characterized in that, An auxiliary lifting assembly (10) is provided in the guiding sliding table (21).

10. A method for manufacturing hooks using the hook automatic bending continuous production line according to any one of claims 1-9, characterized in that, The steps are as follows: S1. The bar (001) comes to the guiding sliding table (21) along with the feeding device and slides to the limiting part (02) along the slope of the guiding sliding table (21); S2. The sliding table (7) starts to move, so that the concave surface of the first helical guide die (25) is in close contact with the bar (001). Then the driving motor (31) is started, and the first forming rotary die (24) rotates counterclockwise. At the same time, the auxiliary lifting assembly (10) lifts upward to assist. One end of the bar (001) is formed by winding around the outer periphery of the first forming rotary die (24) to form a semi-finished workpiece (002); S3. The lifting motor (81) is started to drive the horizontal mounting base (83) to drive the second forming rotary die (26) to move upward until there is a gap. Then the sliding table (7) is started to make the first helical guide die (25) push the workpiece (002) through the gap and keep it at the outer diameter position of the first helical guide die (25). The axial disengaging mechanism (5) is started to disengage the shaft (04). Then the cylinder assembly (4) is started to slide the first forming rotary die (24) outward to a set position, keep the pressure stable and immovable. The lifting motor (81) is started, and the horizontal mounting base (83) moves downward until the second forming rotary die (26) engages with the coupling. At this time, the pin (01) on the second forming rotary die (26) just catches on the outside of the workpiece (002). Then the sliding table (7) is started to move the second helical guide die (27) until its helical groove is in full contact with the workpiece (002); S4. Start the drive motor (31). While the other end of the workpiece (002) is being formed around the outer periphery of the second forming rotary die (26), the pulling of the workpiece (002) causes the flipping seat (242) to flip. At the same time, the air cylinder assembly (4) loses pressure, and the downward force of the workpiece (002) forces the first forming rotary die (24) to retract further, and one bent part of the workpiece (002) is completed and separated. At the same time, the other bent part of the workpiece (002) is also completed; S5. Start the picking manipulator (9) to clamp the workpiece (002), then start the lifting motor (81) to rise, and the workpiece (002) is successfully taken out. The flipping seat (242), the first spiral guide die (25), and the second spiral guide die (27) are reset under the set elastic force, and other moving parts return to their initial positions under the corresponding power sources.

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