Shackle bending forming die

Abstract

The utility model discloses a shackle hot bending forming die. The shackle hot bending forming die comprises a hot bending lower die frame, a hot bending upper die plate, a guide assembly, a hot bending punch, a pre-pressing system and a horizontal side pressing system. The two simmering bending lower die frames are in butt joint to form a box body structure, and the simmering bending upper die plates are arranged above the simmering bending lower die frames; the guide assembly is arranged on the outer side of the box body structure and used for connecting the simmering bending upper die plate and the simmering bending lower die frame. The bending punch is mounted at the bottom of the bending upper template; the pre-compression system is arranged at the bottom of the inner side of the box body structure, and the pre-compression system and the simmer bending punch are correspondingly arranged; the horizontal side pressing systems are arranged on the top of the inner side of the box body structure, and the two horizontal side pressing systems are symmetrically arranged on the two sides of the simmer bending punch. According to the utility model, the pre-pressure system and the simmer bending punch work cooperatively, so that the bent inner surface of the forge piece to be bent is tightly attached to the inner surface of the simmer bending punch, and V-shaped distortion of the shackle after simmer bending is prevented.

Description

Technical Field

[0001] This utility model relates to the field of shackle forging technology, and in particular to a shackle bending forming mold. Background Technology

[0002] In lifting and hoisting operations, shackles are critical connecting components, and their quality directly affects operational safety. During the bending process of a shackle, the middle part is most prone to bending first due to its stress characteristics, which can lead to excessive bending. This causes the middle part to detach from the saddle face punch, forming a bulge and making the shackle profile V-shaped rather than an ideal circle.

[0003] Therefore, there is an urgent need to provide a shackle bending forming mold to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a shackle bending forming mold to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a shackle bending forming mold, comprising:

[0006] The bending lower mold frame is provided in two parts, and the two bending lower mold frames are joined together to form a box structure.

[0007] The upper bending template is positioned above the lower bending template.

[0008] A guide assembly is disposed on the outside of the box structure and is used to connect the upper bending template and the lower bending template.

[0009] A bending punch, wherein the bending punch is installed at the bottom of the bending upper template;

[0010] A pre-pressure system is provided at the bottom inner side of the box structure, and the pre-pressure system is correspondingly provided with the bending punch;

[0011] A horizontal side pressure system is provided, which is located on the inner top of the box structure. Two sets of the horizontal side pressure system are provided, and the two sets of the horizontal side pressure system are symmetrically arranged on both sides of the bending punch.

[0012] Preferably, the pre-stressing system includes:

[0013] A bending pre-compression die is slidably mounted on the lower bending die frame in a vertical direction, and the bending pre-compression die is located directly below the bending punch. The top of the bending pre-compression die is provided with a shackle contour groove that is compatible with the bending punch.

[0014] The counter-pressure lever has a connecting shaft in the middle that contacts and engages with the bending pre-compression mold.

[0015] A fulcrum shaft is fixedly installed on the bending lower mold frame, and the fulcrum shaft is used to support the rod of the counter-pressure lever;

[0016] The first nitrogen spring is provided in two sets, and the two sets of the first nitrogen spring are respectively arranged on both sides of the bending pre-compression mold in the vertical direction. The bottom of the two sets of the first nitrogen spring are respectively in contact with the two ends of the counter-pressure lever.

[0017] Preferably, a spherical bearing is fitted onto the fulcrum shaft.

[0018] Preferably, the groove surface of the shackle contour groove is provided with a marking groove to prevent the reserved font from being pressed.

[0019] Preferably, the horizontal lateral pressure system includes:

[0020] A rolling roller, wherein the rolling roller is arranged in a horizontal direction;

[0021] The bearing housing is installed at both ends of the rolling roller, and the bending die frame is provided with a slide rail, on which the bearing housing is slidably installed.

[0022] The second nitrogen spring is provided in two sets, and the two sets of the second nitrogen spring are arranged one-to-one with the two bearing seats; the second nitrogen spring is arranged in a horizontal direction and is perpendicular to the rolling wheel.

[0023] Preferably, the bending punch is a saddle-shaped bending punch.

[0024] Preferably, the guiding component includes:

[0025] Multiple guide sleeves are fixedly installed on the bending template;

[0026] Multiple guide pillars are fixedly installed on the bending lower mold frame. Each guide pillar is correspondingly set with a guide sleeve, and the guide pillar is slidably installed inside the guide sleeve.

[0027] Preferably, two bending positioning pins are installed on the inner side of the bending lower die frame. The bending positioning pins are symmetrically arranged on both sides of the bending punch, and the bending positioning pins are used to position the forging to be bent.

[0028] Preferably, the bending lower mold frame is provided with cylindrical pins and bolt holes, and the two bending lower mold frames are connected by bolts and cylindrical pins.

[0029] Preferably, the bending die frame is equipped with a bearing seat cover plate and a side cover plate, the bearing seat cover plate being configured corresponding to the horizontal side pressure system, and the side cover plate being configured corresponding to the first nitrogen spring.

[0030] Compared with the prior art, the present invention has the following advantages and technical effects:

[0031] The shackle bending forming mold provided by this utility model, through the setting of a pre-pressure system, utilizes the pre-pressure system and the bending punch to work together to clamp the middle of the forging to be bent throughout the bending process, ensuring that the inner surface of the forging to be bent is tightly fitted with the inner surface of the bending punch, and ultimately making the shackle shape and size meet the requirements after bending, preventing V-shaped distortion of the shackle after bending. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the shackle bending forming mold of this utility model;

[0034] Figure 2 This is a bottom view of the shackle bending forming mold of this utility model;

[0035] Figure 3 for Figure 2 Sectional view of AA;

[0036] Figure 4 for Figure 2 Sectional view of BB;

[0037] In the diagram: 1. Lower bending die; 2. Upper bending die; 3. Bending punch; 4. Bending pre-compression die; 5. Counter-pressure lever; 6. Connecting shaft; 7. Pivot shaft; 8. First nitrogen spring; 9. Spherical bearing; 10. Roller; 11. Bearing seat; 12. Second nitrogen spring; 13. Guide sleeve; 14. Guide post; 15. Bending positioning pin; 16. Cylindrical pin; 17. Bolt; 18. Bearing seat cover plate; 19. Side cover plate. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this utility model can be combined with each other. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] like Figures 1 to 4 As shown, this utility model provides a shackle bending forming mold, comprising:

[0040] There are two bending lower mold frames 1, and the two bending lower mold frames 1 are joined together to form a box structure.

[0041] Bending upper template 2 is set above bending lower template 1;

[0042] The guide assembly is located on the outside of the box structure and is used to connect the upper bending template 2 and the lower bending template 1.

[0043] Bending punch 3 is installed at the bottom of the bending upper template 2;

[0044] The pre-pressure system is located at the bottom inner side of the box structure and is correspondingly set with the bending punch 3.

[0045] The horizontal side pressure system is located on the inner top of the box structure. There are two sets of horizontal side pressure systems, and the two sets of horizontal side pressure systems are symmetrically arranged on both sides of the bending punch 3.

[0046] Further optimization of the scheme, the pre-stressing system includes:

[0047] The bending pre-compression mold 4 is slidably installed on the bending lower mold frame 1 in the vertical direction, and the bending pre-compression mold 4 is located directly below the bending punch 3. The top of the bending pre-compression mold 4 is provided with a shackle contour groove that is compatible with the bending punch 3.

[0048] The counter-pressure lever 5 has a connecting shaft 6 in the middle that contacts and engages with the bending pre-compression mold 4.

[0049] The fulcrum shaft 7 is fixedly installed on the bending lower mold frame 1. The fulcrum shaft 7 is used to support the rod of the counter-pressure lever 5.

[0050] The first nitrogen spring 8 is provided in two sets, and the two sets of first nitrogen spring 8 are respectively arranged on both sides of the bending pre-compression mold 4 in the vertical direction. The bottom of the two sets of first nitrogen spring 8 are respectively in contact with the two ends of the counter-pressure lever 5.

[0051] The design was further optimized by installing a spherical bearing 9 on the pivot shaft 7.

[0052] The design has been further optimized by adding a marking groove on the surface of the shackle contour groove to prevent the reserved font from being pressed.

[0053] Further optimization of the scheme, the horizontal lateral pressure system includes:

[0054] Roller 10, which is arranged in a horizontal direction;

[0055] Bearing housing 11 is installed at both ends of the rolling roller 10. A slide rail is provided on the bending lower mold frame 1, and the bearing housing 11 is slidably installed on the slide rail.

[0056] The second nitrogen spring 12 is provided in two sets, and the two sets of second nitrogen spring 12 are arranged in a one-to-one correspondence with the two bearing seats 11; the second nitrogen spring 12 is arranged in the horizontal direction and is arranged perpendicular to the rolling wheel 10.

[0057] Further optimization of the design: the bending punch 3 adopts a saddle-shaped bending punch 3.

[0058] The solution has been further optimized, and the guiding components include:

[0059] Multiple guide sleeves 13 are fixedly installed on the upper template 2 of the bending process;

[0060] Multiple guide pillars 14 are fixedly installed on the bending lower mold frame 1. Each guide pillar 14 is correspondingly set with a guide sleeve 13, and the guide pillar 14 is slidably installed in the guide sleeve 13.

[0061] To further optimize the design, two bending positioning pins 15 are installed on the inner side of the bending lower die frame 1. The bending positioning pins 15 are symmetrically arranged on both sides of the bending punch 3. The bending positioning pins 15 are used to position the forging to be bent.

[0062] The design was further optimized by providing cylindrical pin 16 and bolt 17 holes on the lower bending mold frame 1, and the two lower bending mold frames 1 are connected by bolt 17 and cylindrical pin 16.

[0063] The scheme is further optimized by installing a bearing seat cover plate 18 and a side cover plate 19 on the bending lower mold frame 1. The bearing seat cover plate 18 is set in accordance with the horizontal side pressure system, and the side cover plate 19 is set in accordance with the first nitrogen spring 8.

[0064] The working principle of the shackle bending forming mold provided by this utility model is as follows:

[0065] The forging to be bent is placed on the box structure composed of the lower bending die 1 via the bending positioning pin 15. Then, the upper die is pressed down to perform unbending bending. During the unbending bending process, the middle part is most likely to bend first due to its stress characteristics. A bending pre-compression die 4 is set at the bottom, and it is equipped with two sets of first nitrogen springs 8 that move downward on both sides. These two sets of nitrogen springs apply downward pressure to both ends of the counter-pressure levers 5 on both sides. Using the lever principle, the connecting shaft 6 located in the middle part exerts upward force, pushing the bending pre-compression die 4 located above upward, so that the bending pre-compression die 4 presses the middle part of the forging to be bent. By working in conjunction with the saddle-shaped bending punch 3, excessive bending is prevented. Simultaneously, two sets of four opposing and mutually pressing second nitrogen springs 12 drive two rolling rollers 10, causing the two horizontally sliding rollers to press inwards towards each other. When the forging to be bent begins to change from a straight state to a bent state, since the rolling rollers 10 can only move horizontally, while the bending punch 3 and the forging to be bent can move up and down, the rolling rollers 10 initially move from bottom to top relative to the bending punch 3 and the forging to be bent. As the bending of the shackle deepens, the movement of the rolling rollers 10 gradually transitions to pressing the forging to be bent towards the center. The rolling rollers 10 run along the outer surface contour trajectory of the shackle after bending, realizing the roll bending of the forging to be bent. At the same time, a saddle-shaped bending punch 3 is used to support the inner contour of the shackle, ensuring that the shape of the bent shackle is consistent with the finished product. A marking groove is designed on the top surface of the bending pre-pressing die 4 to prevent the lettering markings from being crushed and damaged.

[0066] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model.

Claims

1. A swaging and bending die for unthreading, characterized by, Include: The lower die frame (1) is provided with two, and the two lower die frames (1) are butted to form a box structure, The upper die plate (2) is arranged above the lower die frame (1), The guide assembly is arranged outside the box structure, and the guide assembly is used for connecting the upper die plate (2) and the lower die frame (1), The bending punch (3) is installed at the bottom of the bending upper die plate (2), The pre-pressure system is arranged at the inner side bottom of the box structure, and the pre-pressure system is correspondingly arranged with the bending punch (3), The horizontal side pressure system is arranged at the inner side top of the box structure, and the horizontal side pressure system is provided with two groups, and the two groups of horizontal side pressure systems are symmetrically arranged on both sides of the bending punch (3).

2. The swaging and bending die for a shackle according to claim 1, characterized by The pre-pressure system includes: The bending pre-pressure die (4) is slidably installed on the lower die frame (1) in the vertical direction, and the bending pre-pressure die (4) is arranged directly below the bending punch (3), and the top end of the bending pre-pressure die (4) is provided with a buckle profile slot matched with the bending punch (3); The counterforce lever (5) is in contact with the bending pre-pressure die (4) through the connecting shaft (6) in the middle; The fulcrum shaft (7) is fixedly installed on the lower die frame (1), and the fulcrum shaft (7) is used for supporting the rod body of the counterforce lever (5); The first nitrogen gas spring (8) is provided with two groups, and the two groups of first nitrogen gas springs (8) are respectively arranged on both sides of the bending pre-pressure die (4) in the vertical direction, and the bottoms of the two groups of first nitrogen gas springs (8) are respectively in contact with the two ends of the counterforce lever (5).

3. The swaging and bending die according to claim 2, wherein The joint bearing (9) is sleeved on the fulcrum shaft (7).

4. The swaging and bending die according to claim 2, wherein The identification groove is arranged on the groove surface of the buckle profile slot to prevent the reserved font from being pressed.

5. The swaging and bending die as defined in claim 1, wherein The horizontal side pressure system includes: The rolling wheel (10) is arranged in the horizontal direction; The bearing seat (11) is installed at both ends of the rolling wheel (10), and the lower die frame (1) is provided with a slide rail, and the bearing seat (11) is slidably installed on the slide rail; The second nitrogen gas spring (12) is provided with two groups, and the two groups of second nitrogen gas springs (12) are correspondingly arranged with the two bearing seats (11); the second nitrogen gas spring (12) is arranged in the horizontal direction, and the second nitrogen gas spring (12) is arranged vertically with the rolling wheel (10).

6. The swaging and bending die as defined in claim 1, wherein The bending punch (3) adopts a saddle surface type bending punch (3).

7. The swaging and bending die as defined in claim 1, wherein The guide assembly includes: A plurality of guide sleeves (13) are fixedly installed on the upper die plate (2), A plurality of guide columns (14) are fixedly installed on the bending lower die frame (1), the guide columns (14) are provided in one-to-one correspondence with the guide sleeves (13), and the guide columns (14) are slidingly installed in the guide sleeves (13).

8. The swaging and bending die as defined in claim 1, wherein Two bending positioning pins (15) are installed on the inner side of the bending lower die frame (1), the bending positioning pins (15) are symmetrically arranged on the two sides of the bending punch (3), and the bending positioning pins (15) are used for positioning the to-be-bent forging.

9. The swaging and bending die as defined in claim 1, wherein The bending lower die frame (1) is provided with a cylindrical pin (16) and a bolt (17) hole, and the two bending lower die frames (1) are butt-jointed through the bolt (17) and the cylindrical pin (16).

10. The swaging and bending die as defined in claim 2 wherein, The bending lower die frame (1) is provided with a bearing seat cover plate (18) and a side cover plate (19), the bearing seat cover plate (18) is arranged in correspondence with the horizontal side pressing system, and the side cover plate (19) is arranged in correspondence with the first nitrogen gas spring (8).

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