Prefabricated part bending machine

Abstract

The utility model relates to the technical field of bending machines, and discloses a prefabricated part bending machine which comprises a portal frame, the bottom of the portal frame is fixedly connected to the upper portion of a base, anti-tilting frames are fixedly connected to the four corners of the base, a plurality of hydraulic cylinders are rotationally hinged to the inner wall of the top of the portal frame, and the output ends of the bottoms of the hydraulic cylinders are rotationally hinged to the top of a movable pressing beam. The bottom of the movable pressing beam is fixedly connected with a male die through a screw connecting structure, sliding grooves are formed in the two sides of the movable pressing beam, limiting guide rails are slidably clamped in the movable pressing beam, the outer side walls of the limiting guide rails are fixedly connected to the inner side wall of the portal frame, and lubricating mechanisms are inserted into the upper portion and the lower portion of the position, corresponding to the connecting position of the limiting guide rails, of the movable pressing beam correspondingly. The two sides of the top of the lubricating mechanism are symmetrically and rotationally connected with quick release mechanisms, the limiting guide rail can be lubricated, the service life of equipment is prolonged, meanwhile, lubricating loss parts can be conveniently replaced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a prefabricated part bending machine. Background Technique

[0002] A prefabricated part bending machine is a mechanical device specifically used for bending metal or non-metal prefabricated parts. Its main function is to apply an external force to cause plastic deformation of the material at a predetermined position, so as to obtain workpieces with specific angles, arcs or shapes. Existing bending machines usually cooperate with limit guide rails to keep the punch pressing down horizontally. However, due to friction and wear when the limit guide rails cooperate with the moving pressure beam for limit sliding, the service life of the equipment and the bending accuracy are greatly reduced. Therefore, it is particularly important to provide a prefabricated part bending machine to solve the above problems. Content of the Utility Model

[0003] The purpose of the utility model is to provide a prefabricated part bending machine, which can lubricate the limit guide rails, improve the service life of the equipment, and at the same time can conveniently replace the lubrication loss parts to improve work efficiency.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a prefabricated part bending machine, including a gantry, the bottom of the gantry is fixedly connected to the upper part of the base, anti-tilting frames are fixedly connected to the four corners of the base, a plurality of hydraulic cylinders are rotatably hinged to the inner wall of the top of the gantry, the bottom output end of the hydraulic cylinder is rotatably hinged to the top of the moving pressure beam, a punch is fixedly connected to the bottom of the moving pressure beam through a screw connection structure, a die fixedly connected to the upper part of the base is arranged at a corresponding position directly below the punch, sliding grooves are arranged on both sides of the moving pressure beam and limit guide rails are slidably clamped inside, the outer side wall of the limit guide rail is fixedly connected to the inner side wall of the gantry, lubricating mechanisms are respectively inserted into the upper part and the lower part of the moving pressure beam corresponding to the connection position with the limit guide rail, and quick-release mechanisms are symmetrically rotatably connected to both sides of the top of the lubricating mechanism;

[0005] Lubricating mechanism, the lubricating mechanism includes a U-shaped outer shell, the U-shaped outer shell is inserted into a groove opened in the moving pressure beam, three chambers are opened inside the U-shaped outer shell, one end of a first spring is fixedly connected to the rear wall of the chamber, the other end of the first spring is fixedly connected to the rear wall of the push plate, a solid lubricating block is bonded to the front wall of the push plate, and the inner side wall of the solid lubricating block abuts against the outer wall of the limit guide rail.

[0006] Preferably, the quick-release mechanism includes two hollow rotating rods, one end of the hollow rotating rod is rotatably connected to the top of the U-shaped outer shell and a groove opened in the top of the moving pressure beam, a slider is slidably connected inside the hollow rotating rod, the other end of the hollow rotating rod is fixedly connected with an annular stop strip to limit the slider inside the hollow rotating rod, one end of a second spring is fixedly connected to the inner side end of the slider, the other end of the second spring is fixedly connected to the inner side end wall of the hollow rotating rod, and one end of a U-shaped corner handle is fixedly connected to the outer side end of the slider.

[0007] Preferably, a first through-hole groove penetrating up and down is formed inside the hollow rotating rod, and a second through-hole groove equal in size to the first through-hole groove is formed inside the slider.

[0008] Preferably, a resilient block is abutted above the position of the first through-hole groove of the slider. The upper part of the head end of the resilient block is of an inclined chamfer structure. The resilient block is slidably connected inside the limit sleeve block. The bottom of the limit sleeve block is fixedly connected to the top of the moving pressure beam. The tail end of the resilient block is fixedly connected to one end of a third spring, and the other end of the third spring is fixedly connected to the side wall of the fixed block. The bottom of the fixed block is fixedly connected to the top of the moving pressure beam.

[0009] Preferably, a plurality of triangularly arranged reinforcing ribs are fixedly connected to the top of the gantry.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] By providing a lubrication mechanism, with the cooperation of the solid lubricating block, the first spring, the push plate, and the U-shaped outer shell, the lubrication is more sufficient, and the situation of generating pollutants such as sludge due to the use of lubricating oil in the past is changed. Furthermore, the working environment of the staff and the machine are cleaner. At the same time, solid lubrication has higher adaptability to extreme environments and longer effectiveness than liquid lubrication, improving the service life and use accuracy of the equipment; by providing a quick-release mechanism, when it is necessary to replace the solid lubricating block, the lubrication mechanism can be conveniently disassembled and maintained, greatly improving the work efficiency. Description of the Drawings

[0012] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0013] Figure 1 is a three-dimensional structure diagram of the structure of the present utility model;

[0014] Figure 2 is a three-dimensional enlarged structure diagram at position A of the present utility model;

[0015] Figure 3 is a three-dimensional enlarged structure diagram at position B of the present utility model;

[0016] Figure 4 is a three-dimensional structure diagram of the lubrication mechanism of the present utility model;

[0017] Figure 5 is a three-dimensional structure diagram of the quick-release mechanism of the present utility model.

[0018] In the figure: 1 gantry, 2 base, 3 hydraulic cylinder, 4 moving pressure beam, 5 punch, 6 die, 7 limit guide rail, 8 anti-tilting frame, 9 lubrication mechanism, 91 U-shaped housing, 92 first spring, 93 push plate, 94 solid lubricating block, 95 chamber, 10 quick-release mechanism, 101 hollow rotating rod, 1011 first through-hole groove, 102 slider, 1021 second through-hole groove, 103 second spring, 104 annular stop strip, 105 U-shaped corner handle, 106 rebounding block, 107 limit sleeve block, 108 third spring, 109 fixed block, 11 screw connection structure, 12 reinforcing rib. Specific embodiments

[0019] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention and are not intended to limit the present invention.

[0020] Please refer to Figures 1-5 , a precast bending machine, comprising a gantry 1, the bottom of the gantry 1 is fixedly connected to the upper part of the base 2, anti-tilting frames 8 are fixedly connected to the four corners of the base 2, a plurality of hydraulic cylinders 3 are rotatably hinged to the inner wall of the top of the gantry 1, the bottom output end of the hydraulic cylinder 3 is rotatably hinged to the top of the moving pressure beam 4, a punch 5 is fixedly connected to the bottom of the moving pressure beam 4 through a screw connection structure 11, a die 6 fixedly connected to the upper part of the base 2 is arranged at a corresponding position directly below the punch 5, chutes are arranged on both sides of the moving pressure beam 4 and a limit guide rail 7 is slidably clamped inside, the outer side wall of the limit guide rail 7 is fixedly connected to the inner side wall of the gantry 1, lubrication mechanisms 9 are respectively inserted above and below the connection position of the moving pressure beam 4 corresponding to the limit guide rail 7, and quick-release mechanisms 10 are symmetrically and rotatably connected to both sides of the top of the lubrication mechanism 9;

[0021] Lubrication mechanism, the lubrication mechanism 9 includes a U-shaped housing 91, the U-shaped housing 91 is cooperatively inserted into a groove formed in the moving pressure beam 4, three chambers 95 are formed inside the U-shaped housing 91, the rear wall of the chamber 95 is fixedly connected to one end of a first spring 92, the other end of the first spring 92 is fixedly connected to the rear wall of a push plate 93, and a solid lubricating block 94 is adhesively bonded to the front wall of the push plate 93.

[0022] Among them, the quick-release mechanism 10 includes two hollow rotating rods 101. One end of each hollow rotating rod 101 is rotatably connected to the top of the U-shaped housing 91 and the groove formed at the top of the moving pressure beam 4. A slider 102 is slidably connected inside the hollow rotating rod 101. The other end of the hollow rotating rod 101 is fixedly connected with an annular retaining strip 104 to limit the slider 102 inside the hollow rotating rod 101. One end of the second spring 103 is fixedly connected to the inner side end of the slider 102, and the other end of the second spring 103 is fixedly connected to the inner side end wall of the hollow rotating rod 101. The other end of the slider 102 is fixedly connected to one end of the U-shaped corner handle 105. By providing the U-shaped corner handle 105, it is convenient to lift the U-shaped housing 91 out of the groove of the moving pressure beam 4, and at the same time, it is also convenient to horizontally push the slider 102 to displace.

[0023] Among them, a first through-hole groove 1011 that penetrates up and down is formed inside the hollow rotating rod 101, and a second through-hole groove 1021 equal in size to the first through-hole groove 1011 is formed inside the slider 102. When the first through-hole groove 1011 coincides with the second through-hole groove 1021, the limit on the lubrication mechanism 9 can be released, thereby facilitating the maintenance and replacement of the lubrication mechanism 9.

[0024] Among them, a return block 106 is abutted above the position of the first through-hole groove 1011 on the slider 102. The upper part of the head end of the return block 106 is a bevel cut angle structure. The return block 106 is slidably connected inside the limit sleeve block 107. The bottom of the limit sleeve block 107 is fixedly connected to the top of the moving pressure beam 4. One end of the third spring 108 is fixedly connected to the tail end of the return block 106, and the other end of the third spring 108 is fixedly connected to the side wall of the fixed block 109. The bottom of the fixed block 109 is fixedly connected to the top of the moving pressure beam 4. By providing structures such as the return block 106, a one-way locking function for the lubrication mechanism 9 is formed to prevent the lubrication mechanism 9 from moving up and down.

[0025] Among them, multiple groups of triangularly arranged reinforcing ribs 12 are fixedly connected to the top of the gantry 1, which can improve the load-bearing capacity of the top beam of the gantry 1.

[0026] Working principle: When bending the prefabricated part, first start the hydraulic cylinder 3 to drive the moving pressure beam 4 to move downward. The moving pressure beam 4 is constrained by the limiting guide rails 7 on both sides to maintain horizontal downward pressure, and then drive the punch 5 to contact the prefabricated part and press it into the die 6 to complete the bending. At the same time, during the relative sliding displacement process of the moving pressure beam 4 and the limiting guide rail 7, the solid lubricating block 94 always frictionally slides and lubricates on the surface of the limiting guide rail 7 under the action of the first spring 92 and the push plate 93. When the solid lubricating block 94 is consumed, manually press the U-shaped corner handle 105 horizontally inward, and then drive the slider 102 to slide inside the hollow rotating rod 101. Then the second through-hole groove 1021 opened on the slider 102 coincides with the first through-hole groove 1011 opened on the hollow rotating rod 101, and then the spring-back block 106 releases the limit on the hollow rotating rod 101. Then manually rotate the U-shaped corner handle 105 to drive the hollow rotating rod 101 to the vertical state and lift it upward, and then pull out the U-shaped outer shell 91 and re-fix and replace the solid lubricating block 94 inside. Then insert the U-shaped outer shell 91 back into the corresponding groove of the moving pressure beam 4, and then rotate the hollow rotating rod 101 and press it down. At this time, the inclined chamfer end of the spring-back block 106 contacts and displaces the slider 102 until the hollow rotating rod 101 is horizontal. At this time, the spring-back block 106 rebounds under the action of the third spring 108 and abuts against the upper part of the slider 102 at the position of the first through-hole groove 1011. At this time, the U-shaped outer shell 91 is limited and cannot move.

[0027] In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0028] Although the content of the present invention has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and substitutions to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A prefabricated part bending machine, characterized in that: It includes a gantry (1), the bottom of the gantry (1) is fixedly connected to the upper part of the base (2), anti-tilting frames (8) are fixedly connected to the four corners of the base (2), a plurality of hydraulic cylinders (3) are rotatably hinged to the inner wall of the top of the gantry (1), the bottom output end of the hydraulic cylinder (3) is rotatably hinged to the top of the moving pressure beam (4), a punch (5) is fixedly connected to the bottom of the moving pressure beam (4) through a screw connection structure (11), a die (6) fixedly connected to the upper part of the base (2) is arranged at the corresponding position directly below the punch (5), sliding grooves are provided on both sides of the moving pressure beam (4) and a limiting guide rail (7) is slidably clamped inside, the outer side wall of the limiting guide rail (7) is fixedly connected to the inner side wall of the gantry (1), lubricating mechanisms (9) are respectively inserted into the upper and lower parts of the moving pressure beam (4) corresponding to the connection positions with the limiting guide rail (7), and quick-release mechanisms (10) are symmetrically and rotatably connected to both sides of the top of the lubricating mechanism (9); The lubricating mechanism (9), the lubricating mechanism (9) includes a U-shaped outer shell (91), the U-shaped outer shell (91) is inserted into the groove opened in the moving pressure beam (4) in a matching manner, three chambers (95) are opened on the inner side of the U-shaped outer shell (91), the rear wall of the chamber (95) is fixedly connected to one end of a first spring (92), the other end of the first spring (92) is fixedly connected to the rear wall of a push plate (93), and a solid lubricating block (94) is bonded to the front wall of the push plate (93).

2. The prefabricated part bending machine according to claim 1, characterized in that: The quick-release mechanism (10) includes two hollow rotating rods (101), one end of the hollow rotating rod (101) is rotatably connected to the top of the U-shaped outer shell (91) and the groove opened in the top of the moving pressure beam (4), a slider (102) is slidably connected inside the hollow rotating rod (101), the other end of the hollow rotating rod (101) is fixedly connected to an annular retaining strip (104) to limit the slider (102) inside the hollow rotating rod (101), one end of a second spring (103) is fixedly connected to the inner side end of the slider (102), the other end of the second spring (103) is fixedly connected to the inner side end wall of the hollow rotating rod (101), and the other end of the slider (102) is fixedly connected to one end of a U-shaped corner handle (105).

3. The prefabricated part bending machine according to claim 2, characterized in that: A first through-hole groove (1011) penetrating up and down is opened on the inner side of the hollow rotating rod (101), and a second through-hole groove (1021) equal in size to the first through-hole groove (1011) is opened on the inner side of the slider (102).

4. The prefabricated part bending machine according to claim 3, wherein: A return block (106) is abutted above the position of the slider (102) in the first through-hole groove (1011), the upper part of the head end of the return block (106) is a bevel cut angle structure, the return block (106) is slidably connected inside a limit sleeve block (107), the bottom of the limit sleeve block (107) is fixedly connected to the top of the moving pressure beam (4), one end of a third spring (108) is fixedly connected to the tail end of the return block (106), and the other end of the third spring (108) is fixedly connected to the side wall of a fixed block (109), and the bottom of the fixed block (109) is fixedly connected to the top of the moving pressure beam (4).

5. A prefabricated part bending machine according to claim 1, characterized in that: Multiple groups of triangularly arranged reinforcing ribs (12) are fixedly connected to the top of the gantry (1).

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