Bending machine with breakage prevention

Abstract

The utility model discloses a kind of bending machine of preventing fracture, including workbench, the lower surface middle part inside the workbench is fixedly installed with hydraulic oil tank, the lower surface inside the workbench is fixedly installed with oil pump on the side of hydraulic oil tank, the input end of the oil pump is fixedly connected with hydraulic oil tank through oil pipe, the upper surface of the workbench one end is movably provided with angle measuring device, the inside of the angle measuring device is movably provided with two groups of first connecting rod, two groups of the first connecting rod are movably connected by first fixed pin shaft, the bottom of the first fixed pin shaft is fixedly installed with sliding block, one end of the first connecting rod is movably connected with second connecting rod through pivot, the other end of the first connecting rod is movably connected with third connecting rod through pivot. The utility model is pre-set by angle measuring device to bend angle of workpiece, when reaching bending angle, mechanical automatic stop working.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, specifically a bending machine that prevents breakage. Background Technology

[0002] In the metal processing industry, bending machines are commonly used to bend metal sheets into desired shapes. However, traditional bending machines often suffer from workpiece breakage or inaccurate bending due to variations in workpiece material, thickness, and bending angle, affecting processing quality and production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a bending machine that prevents breakage, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bending machine to prevent breakage, comprising a worktable, a hydraulic oil tank fixedly installed in the middle of the lower surface inside the worktable, an oil pump fixedly installed on one side of the lower surface inside the worktable above the hydraulic oil tank, the input end of the oil pump being fixedly connected to the hydraulic oil tank via an oil pipe, an angle measuring device movably disposed on the upper surface of one end of the worktable, two sets of first connecting rods movably disposed inside the angle measuring device, the two sets of first connecting rods being movably connected by a first fixed pin, the bottom of the first fixed pin... A slider is fixedly installed at one end of the first connecting rod. One end of the first connecting rod is movably connected to a second connecting rod via a rotating shaft. The other end of the first connecting rod is movably connected to a third connecting rod via a rotating shaft. The second connecting rod and the third connecting rod are movably connected via a second fixed pin. The bottom end of the second fixed pin is fixedly installed on the upper surface of one end of the worktable. A hydraulic cylinder is fixedly installed at the other end of the upper surface of the worktable. An oil inlet is opened at the bottom end of the hydraulic cylinder. The output end of the oil pump is fixedly connected to the oil inlet via an oil pipe. A solenoid valve switch plate is fixedly installed on one side of the top of the hydraulic cylinder.

[0005] Preferably, a support wheel is movably mounted on the middle of the upper surface of the worktable via a rotating shaft, and a sliding groove is provided at the end of the upper surface of the worktable away from the hydraulic cylinder. A normally closed contact solenoid valve is fixedly mounted on the side of the first fixed pin near the solenoid valve switch plate via a connecting rod.

[0006] Preferably, an iron core is fixedly installed on one side of the normally closed contact solenoid valve, and a coil is wound around the surface of the iron core. A pressure switch is movably arranged on the outer surface of the normally closed contact solenoid valve near the iron core. A fixed contact is fixedly installed at the bottom of the normally closed contact solenoid valve, and the fixed contact is fixedly connected to the coil through a wire.

[0007] Preferably, an oil pump control switch is fixedly installed on one end of the workbench near the hydraulic cylinder, and a storage battery is fixedly installed on one end inside the workbench.

[0008] Preferably, the workbench is fixedly installed with support legs at the four corners of its bottom end.

[0009] Preferably, the first fixing pin and the slider have an internal threaded through hole at their center, the first fixing pin and the slider are fixedly connected to the positioning bolt through the internal threaded through hole, and the first fixing pin and the worktable are slidably connected to the slider through a slide groove.

[0010] Preferably, a protractor is fixedly installed on one side of the second connecting rod, and a pointer is fixedly installed on the top of the third connecting rod.

[0011] Preferably, a first contact is fixedly installed at the top of the normally closed contact solenoid valve, and a second contact is fixedly installed at the bottom of the normally closed contact solenoid valve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model sets an angle measuring device on the surface of the workbench. The angle measuring device, which consists of a connecting rod, a pointer and a protractor, measures the length of the extension rod of the hydraulic cylinder when the hydraulic cylinder bends the workpiece. The extension length is then converted into the bending angle of the workpiece by the angle measuring device.

[0014] 2. This utility model is equipped with a normally closed contact electromagnetic relay. By combining the electromagnetic relay with an angle measuring device, the required bending angle can be preset. When the workpiece is bent to the corresponding angle, the relay is used to cut off the power to the machine. At the same time, the hydraulic cylinder is used to bend the workpiece to reduce the noise during operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the angle measuring device of this utility model;

[0017] Figure 3 This is a schematic diagram of the normally closed contact electromagnetic relay of this utility model.

[0018] In the diagram: 1. Workbench; 2. Hydraulic oil tank; 3. Oil pump; 4. Angle measuring device; 41. First connecting rod; 42. First fixed pin; 43. Second connecting rod; 44. Third connecting rod; 45. Second fixed pin; 46. Protractor; 47. Pointer; 5. Slider; 6. Hydraulic cylinder; 7. Oil inlet; 8. Solenoid valve switch plate; 9. Support wheel; 10. Slide groove; 11. Normally closed contact solenoid valve; 111. Iron core; 112. Coil; 113. Pressure switch; 114. Fixed contact; 115. First contact; 116. Second contact; 12. Oil pump control switch; 13. Battery; 14. Support leg; 15. Positioning bolt. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a bending machine to prevent breakage, including a workbench 1. A hydraulic oil tank 2 is fixedly installed in the middle of the lower surface inside the workbench 1. An oil pump 3 is fixedly installed on one side of the lower surface inside the workbench 1 above the hydraulic oil tank 2. The input end of the oil pump 3 is fixedly connected to the hydraulic oil tank 2 through an oil pipe. An angle measuring device 4 is movably arranged on the upper surface of one end of the workbench 1. Two sets of first connecting rods 41 are movably arranged inside the angle measuring device 4. The two sets of first connecting rods 41 are movably connected by a first fixed pin 42. A slider 5 is fixedly installed at the bottom end of the first fixed pin 42. One end of the first connecting rod 41 is movably connected to a second connecting rod 43 via a pivot, and the other end of the first connecting rod 41 is movably connected to a third connecting rod 44 via a pivot. The second connecting rod 43 and the third connecting rod 44 are movably connected via a second fixed pin 45. The bottom end of the second fixed pin 45 is fixedly installed on the upper surface of one end of the worktable 1. A hydraulic cylinder 6 is fixedly installed on the other end of the upper surface of the worktable 1. An oil inlet 7 is opened at the bottom end of the hydraulic cylinder 6. The output end of the oil pump 3 is fixedly connected to the oil inlet 7 via an oil pipe. A solenoid valve switch plate 8 is fixedly installed on one side of the top of the hydraulic cylinder 6. A support wheel 9 is movably installed in the middle of the upper surface of the worktable 1 via a pivot.

[0021] A slide groove 10 is provided on the upper surface of the workbench 1 at the end away from the hydraulic cylinder 6. A normally closed contact solenoid valve 11 is fixedly installed on the side of the first fixed pin 42 near the solenoid valve switch plate 8 via a connecting rod. An iron core 111 is fixedly installed on one side inside the normally closed contact solenoid valve 11. A coil 112 is wound on the surface of the iron core 111. A pressure switch 113 is movably arranged on the outer surface of the normally closed contact solenoid valve 11 near the iron core 111. A fixed contact 114 is fixedly installed at the bottom inside the normally closed contact solenoid valve 11. The fixed contact 114 and the coil 112 are fixedly connected by a wire.

[0022] An oil pump control switch 12 is fixedly installed on one end of the workbench 1 near the hydraulic cylinder 6, and a storage battery 13 is fixedly installed inside the workbench 1.

[0023] Support legs 14 are fixedly installed at the four corners of the bottom of the workbench 1, which helps to improve the stability of the machine during operation. The first fixed pin 42 and the slider 5 have internal threaded through holes at their centers. The first fixed pin 42 and the slider 5 are fixedly connected to the positioning bolt 15 through the internal threaded through holes. The first fixed pin 42 and the workbench 1 are slidably connected to the slider 5 through the slide groove 10, which helps to set the bending angle. A protractor 46 is fixedly installed on one side of the second connecting rod 43, and a pointer 47 is fixedly installed on the top of the third connecting rod 44, which helps to accurately set the bending angle. The first contact 115 is fixedly installed on the top of the normally closed contact solenoid valve 11, and the second contact 116 is fixedly installed on the bottom of the normally closed contact solenoid valve 11, which helps to automatically cut off the power and stop the machine from working.

[0024] Working principle: Before bending the workpiece, the bending angle is set by moving the first fixed pin 42 to change the position of the pointer 47 pointing to the protractor 46. When the predetermined bending angle is reached, the measuring device 4 is fixed on the surface of the worktable 1 by rotating the positioning bolt 15. The oil pump control switch 12 is turned on to control the oil pump 3 to deliver the hydraulic oil in the hydraulic oil tank 2 to the hydraulic cylinder 6. The hydraulic cylinder 6 begins to extend under the push of the oil pressure. At the same time, the solenoid valve switch plate 8 moves closer to the normally closed contact solenoid valve 11. When the solenoid valve switch plate 8 presses down the pressure switch 113 and the pressure switch 113 closes with the fixed contact 114, the coil 112 is energized. The iron core 111 and the energized coil 112 generate magnetism to separate the normally closed first contact 115 from the second contact 116. The oil pump 3 is de-energized and stops pumping oil. The hydraulic cylinder 6 stops working and the workpiece reaches the predetermined bending angle.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending machine for preventing breakage, comprising a worktable (1), characterized in that: A hydraulic oil tank (2) is fixedly installed in the middle of the lower surface inside the workbench (1). An oil pump (3) is fixedly installed on the lower surface inside the workbench (1) above the hydraulic oil tank (2). The input end of the oil pump (3) is fixedly connected to the hydraulic oil tank (2) through an oil pipe. An angle measuring device (4) is movably installed on the upper surface of one end of the workbench (1). Two sets of first connecting rods (41) are movably installed inside the angle measuring device (4). The two sets of first connecting rods (41) are movably connected through a first fixed pin (42). A slider (5) is fixedly installed at the bottom end of the first fixed pin (42). One end of the first connecting rod (41) is connected through... A second connecting rod (43) is movably connected to the shaft. The other end of the first connecting rod (41) is movably connected to a third connecting rod (44) via the shaft. The second connecting rod (43) and the third connecting rod (44) are movably connected via a second fixed pin (45). The bottom end of the second fixed pin (45) is fixedly installed on the upper surface of one end of the workbench (1). A hydraulic cylinder (6) is fixedly installed on the other end of the upper surface of the workbench (1). An oil inlet (7) is opened at the bottom end of the hydraulic cylinder (6). The output end of the oil pump (3) is fixedly connected to the oil inlet (7) via an oil pipe. A solenoid valve switch plate (8) is fixedly installed on one side of the top of the hydraulic cylinder (6).

2. The bending machine for preventing breakage according to claim 1, characterized in that: A support wheel (9) is movably mounted on the middle of the upper surface of the workbench (1) via a rotating shaft. A sliding groove (10) is provided on the upper surface of the workbench (1) away from the hydraulic cylinder (6). A normally closed contact solenoid valve (11) is fixedly mounted on the side of the first fixed pin (42) near the solenoid valve switch plate (8) via a connecting rod.

3. The bending machine for preventing breakage according to claim 2, characterized in that: A core (111) is fixedly installed on one side inside the normally closed contact solenoid valve (11). A coil (112) is wound on the surface of the core (111). A pressure switch (113) is movably installed on the outer surface of the normally closed contact solenoid valve (11) near the core (111). A fixed contact (114) is fixedly installed at the bottom inside the normally closed contact solenoid valve (11). The fixed contact (114) is fixedly connected to the coil (112) by a wire.

4. The bending machine for preventing breakage according to claim 3, characterized in that: An oil pump control switch (12) is fixedly installed on one end of the workbench (1) near the hydraulic cylinder (6), and a storage battery (13) is fixedly installed inside the workbench (1).

5. The bending machine for preventing breakage according to claim 4, characterized in that: The workbench (1) is fixedly installed with support legs (14) at the four corners of its bottom end.

6. The bending machine for preventing breakage according to claim 5, characterized in that: The first fixed pin (42) and the slider (5) have an internal threaded through hole at their center. The first fixed pin (42) and the slider (5) are fixedly connected to the positioning bolt (15) through the internal threaded through hole. The first fixed pin (42) and the worktable (1) are slidably connected to the slider (5) through the slide groove (10).

7. The bending machine for preventing breakage according to claim 6, characterized in that: An encounter protractor (46) is fixedly installed on one side of the second connecting rod (43), and a pointer (47) is fixedly installed on the top of the third connecting rod (44).

8. The bending machine for preventing breakage according to claim 7, characterized in that: The normally closed contact type solenoid valve (11) has a first contact (115) fixedly installed at the top inside, and a second contact (116) fixedly installed at the bottom inside.

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