Bending machine capable of switching R arc strips

Abstract

The invention relates to the technical field of bending machines, and particularly discloses an R arc strip switchable bending machine which comprises a bending machine body, a plate conveying part is arranged on the outer side of the bending machine body and is responsible for conveying plates to the bending machine body, and a die switching part and a turnover part are arranged on the bending machine body. The overturning part comprises a pressing plate located below the plate, and the overturning part is responsible for driving the pressing plate to rotate to complete bending of the plate; the die switching component comprises a first die strip and a second die strip, the chamfer radius of the first die strip is smaller than that of the second die strip, and the die switching component is responsible for switching the positions of the first die strip and the second die strip so that the plate can be bent into the corresponding curvature. According to the bending machine with the switchable R arc strips, by arranging the die switching component, the bending die is switched, the two chamfers with different radiuses are arranged, and the large chamfer and the small chamfer are switched, so that the universality of the bending machine is improved, the bending machine does not need to be shut down for part replacement, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bending machine, and particularly relates to a bending machine with switchable R-arc strips. BACKGROUND

[0002] The bending machine is a kind of equipment for metal processing, which is usually used to bend metal materials (such as steel plates, aluminum plates, etc.) into the required shape through pressure. Its application range is wide, including building, machinery manufacturing, aerospace, automobile and other industries. The bending die is a tool for forming and processing plate materials of the bending machine, which mainly realizes the processing of the shape of the article through the change of the physical state of the formed material to make the blank into a workpiece with a specific shape and size under the action of the pressure of the bending machine.

[0003] In the working process of the existing bending machine, it is difficult to replace the bending die. When workers need to replace the die each time, they need to stop first, then manually disassemble the previous die, and then replace the to-be-used die, which makes the use process very cumbersome. SUMMARY

[0004] The present application aims to provide a bending machine with switchable R-arc strips to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A bending machine with switchable R-arc strips, comprising a bending machine body, a plate material conveying component is arranged outside the bending machine body, the plate material conveying component is responsible for conveying plate materials to the bending machine body, a die switching component and a turnover component are arranged on the bending machine body, the turnover component comprises a pressing plate located below the plate material, and the turnover component is responsible for driving the pressing plate to rotate to complete the bending of the plate material; the die switching component comprises a first die strip and a second die strip, the chamfer radius of the first die strip is smaller than that of the second die strip, and the die switching component is responsible for switching the positions of the first die strip and the second die strip to make the plate material bend to the corresponding curvature; a distance compensation component is further arranged on the bending machine body, the distance compensation component comprises a moving table connected with the turnover component, and the distance compensation component is responsible for driving the moving table to move following the rotation of the pressing plate when the bending machine body uses the second die strip to bend, thereby compensating for the arc track error caused by the change of the center axis.

[0007] Further, the die switching component further comprises a first motor, the output end of the first motor is connected with a switching shaft through a belt drive, the outer end of the switching shaft is fixedly connected with a first plate body and a second plate body, the first plate body is connected with the first die strip, and the second plate body is connected with the second die strip.

[0008] Further, the turnover component further comprises a sector gear and a transmission gear meshed with the sector gear, a first support frame is arranged on the bending machine body, a transmission shaft is rotatably connected to the side end of the first support frame, a second motor is fixedly connected to one end of the transmission shaft, the transmission gear is sleeved on the transmission shaft, and the pressing plate is connected to the sector gear.

[0009] Further, the distance compensation component comprises a hydraulic rod, an output end of the hydraulic rod is fixedly connected with a linkage rod, the top of the linkage rod is fixedly connected with the bottom surface of the moving table, and the hydraulic rod is electrically connected with a controller.

[0010] Further, the moving control component further comprises a calculation module and an angle sensor, the angle sensor is arranged at the side end of the sector gear, the calculation module is electrically connected with the controller, and the calculation module comprises the following formula,

[0011] wherein R1 is the first die strip chamfer radius, R2 is the second die strip chamfer radius, and a is the rotation angle of the pressing plate.

[0012] Further, the lifting component further comprises a lifting cylinder, the bottom of the lifting cylinder is connected with a lifting table, the lifting table is slidably arranged on the bending machine body through a guide rail, and the first motor is arranged on the lifting table.

[0013] Further, a groove is arranged on the pressing plate, a roller is arranged on the groove, and the roller is in close contact with the plate material during actual work.

[0014] Further, the pressing plate is further provided with an alarm component, the pressing plate is further provided with a guide groove, an arc-shaped block is slidably arranged on the guide groove, the arc-shaped block is responsible for supporting the roller, a first contact block is arranged at the bottom of the arc-shaped block, and a second contact block is arranged at the inner bottom of the guide groove.

[0015] Further, the alarm component further comprises an alarm circuit, the alarm circuit further comprises a storage battery and an alarm lamp, and the alarm circuit is used for electrifying the alarm lamp when the first contact block is separated from the second contact block.

[0016] In the above technical scheme, the R arc strip switchable bending machine provided by the present application has the following beneficial effects:

[0017] The bending die is switched by setting the die switching component, two different radii chamfers are set, the large chamfer and the small chamfer are switched, the versatility of the bending machine is improved, the machine does not need to be stopped and replaced, and the production efficiency is improved; Furthermore, by setting the distance compensation component and the calculation formula, when the die is switched to the large chamfer, the pressing plate can be slowly moved, the pressing plate is moved and rotated at the same time, so that the movement track of the rotating pressing plate can always extrude the plate, thereby compensating for the track error caused by the change of the rotating circular shaft.

[0018] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the present disclosure.

[0019] The present application provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0021] Figure 1 The overall external structure schematic diagram provided for embodiment 1 of the present application is shown in the figure;

[0022] Figure 2 The die switching component structure schematic diagram provided for embodiment 1 of the present application is shown in the figure;

[0023] Figure 3 The flip component structure schematic diagram provided for embodiment 1 of the present application is shown in the figure;

[0024] Figure 4 The flip component side view structure schematic diagram provided for embodiment 1 of the present application is shown in the figure;

[0025] Figure 5 The overall bottom view structure schematic diagram provided for embodiment 1 of the present application is shown in the figure;

[0026] Figure 6 The formula calculation schematic diagram provided for embodiment 1 of the present application is shown in the figure;

[0027] Figure 7 The movement control component signal transmission diagram provided for embodiment 1 of the present application is shown in the figure;

[0028] Figure 8 The alarm component structure schematic diagram provided for embodiment 3 of the present application is shown in the figure;

[0029] Figure 9The side view structure schematic diagram of the pressing plate provided for the embodiment 3 of the present application;

[0030] Figure 10 The enlarged structure schematic diagram at A provided for the embodiment 3 of the present application;

[0031] Figure 11 The cross-sectional structure schematic diagram of the pressing plate provided for the embodiment 3 of the present application;

[0032] Figure 12 The alarm circuit diagram provided for the embodiment 3 of the present application.

[0033] Explanation of reference signs:

[0034] 1, bending machine body; 2, die switching component; 21, first die strip; 22, second die strip; 23, first motor; 24, switching shaft; 25, first plate body; 26, second plate body; 3, turnover component; 31, pressing plate; 32, sector gear; 33, transmission gear; 34, first support frame; 35, second motor; 36, transmission shaft; 4, distance compensation component; 41, moving table; 42, hydraulic rod; 43, linkage rod; 5, alarm component; 51, roller; 52, first contact block; 53, reset member; 54, groove; 55, alarm lamp; 56, second contact block. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the protection scope of the present disclosure.

[0036] Embodiment 1, please refer to Figures 1-7 A bending machine with switchable R-arc strips, comprising a bending machine body 1, a plate material conveying component is arranged outside the bending machine body 1, the plate material conveying component is responsible for conveying plate materials to the bending machine body 1, a die switching component 2 and a turnover component 3 are arranged on the bending machine body 1, the turnover component 3 comprises a pressing plate 31 located below the plate material, the turnover component 3 is responsible for driving the pressing plate 31 to rotate to complete the bending of the plate material;

[0037] The mold switching component 2 includes a first mold strip 21 and a second mold strip 22, the first mold strip 21 has a smaller chamfer radius than the second mold strip 22, the mold switching component 2 is responsible for switching the positions of the first mold strip 21 and the second mold strip 22, so that the plate is bent into a corresponding curvature; The bending machine body 1 is also provided with a distance compensation component 4, the distance compensation component 4 includes a moving table 41 connected with the turnover component 3, and the distance compensation component 4 is responsible for driving the moving table 41 to move along with the pressing plate 31 when the bending machine body 1 is bent by the second mold strip 22, and compensating the arc track error caused by the change of the center axis.

[0038] In further provided embodiments of the application, the mold switching component 2 further includes a first motor 23, the output end of the first motor 23 is connected with a switching shaft 24 through a belt drive, the outer end of the switching shaft 24 is fixedly connected with a first plate body 25 and a second plate body 26, the first plate body 25 is connected with the first mold strip 21, and the second plate body 26 is connected with the second mold strip 22.

[0039] Specifically, the output end of the first motor 23 is fixedly sleeved with a belt pulley, the outer end of the switching shaft 24 is also fixedly sleeved with a belt pulley, and a pair of belt pulleys are jointly sleeved with a belt, when the first motor 23 is started, the switching shaft 24 is driven to rotate through the belt and the belt pulley.

[0040] In further provided embodiments of the application, the turnover component 3 further includes a sector gear 32 and a transmission gear 33 meshingly connected therewith, the bending machine body 1 is provided with a first support frame 34, the side end of the first support frame is rotatably connected with a transmission shaft 36, one end of the transmission shaft 36 is fixedly connected with a second motor 35, the transmission gear 33 is sleeved on the transmission shaft 36, and the pressing plate 31 is connected to the sector gear 32.

[0041] In further provided embodiments of the application, the distance compensation component 4 includes a hydraulic rod 42, the output end of the hydraulic rod 42 is fixedly connected with a linkage rod 43, the top of the linkage rod 43 is fixedly connected with the bottom surface of the moving table 41, and the hydraulic rod 42 is electrically connected with a controller.

[0042] Further including a moving control component, the moving control component includes a calculation module and an angle sensor, the angle sensor is arranged at the side end of the sector gear 32, the calculation module is electrically connected with the controller, and the calculation module includes calculating the following formula,

[0043] Wherein, R1 is the chamfer radius of the first mold strip, R2 is the chamfer radius of the second mold strip, and a is the rotation angle of the pressing plate.

[0044] D is the distance of the movement of the pressing plate, and the original formula of the pressing plate is as follows,

[0045] , by the trigonometric function half-angle formula simplification, can be obtained .

[0046] The further provided scheme of the application further provides that the bending machine body 1 is further provided with a lifting component, the lifting component comprises a lifting cylinder, the bottom of the lifting cylinder is connected with a hoisting table, the hoisting table is slidingly arranged on the bending machine body 1 through guide rails, and the first motor 23 is arranged on the hoisting table.

[0047] In the application, when the first die strip 21 is replaced by the second die strip 22, the lifting cylinder needs to be started first, the hoisting table is lifted together with the first die strip 21 and the second die strip 22 by the lifting cylinder, so that the second die strip 22 does not encounter motion interference during rotation, then the first motor 23 is started, the first motor 23 rotates 180 degrees with the switching shaft 24, then the second die strip 22 rotates to the lower side, the lifting cylinder is started again, the first die strip 21 is lowered and contacts with the plate material conveyed, and the plate material is clamped between the first die strip 21 and the pressing plate 31.

[0048] Specifically, the side end of the pressing plate 31 is provided with a supporting plate, the supporting plate is parallel to the pressing plate 31 and supports the plate material together.

[0049] When bending is needed, the second motor 35 and the hydraulic rod 42 are started at the same time, the second motor 35 rotates the sector gear 32 through the transmission shaft 36, the sector gear 32 rotates the pressing plate 31, and the plate material is bent by the rotation of the pressing plate 31; during the bending process, the end of the hydraulic rod 42 moves a distance that satisfies the formula That is, no matter what angle the pressing plate rotates to, the pressing plate 31 needs to move a distance corresponding to the distance calculated according to the formula on the horizontal distance.

[0050] The calculation formula transmits the calculated data to the controller through the calculation module, so that the controller drives the end of the hydraulic rod 42 to move to the set distance.

[0051] In actual process, the calculation of every x-degree change can be performed according to the calculation capacity of the calculation module, that is, the D value is calculated once every x-degree change of alpha, and the smaller x is, the closer the motion track of the pressing plate 31 is to the actual required value, that is, the more accurate it is.

[0052] Embodiment 2, the difference between embodiment 2 and embodiment 1 is that the following technical features are added: the pressing plate 31 is provided with a groove, the groove is provided with a roller shaft 53 (made of hard metal material), and the roller shaft 53 rolls closely to the plate material in actual work.

[0053] The vertex of the roller shaft 53 is parallel to the top surface of the pressing plate 31, and the roller shaft 53 is stressed in use.

[0054] Rolling shaft 53 is rotationally connected in the recess, the side end of pressing plate 31 extends with a semicircular part, the side end of supporting plate is provided with an arc-shaped slot, the arc-shaped slot and the semicircular part are matched with each other, so that the supporting plate can still be tightly attached to the pressing plate 31.

[0055] When the pressing plate 31 rotates, the rolling shaft 53 can roll on the bottom surface of the plate material, so as to convert sliding friction into rolling friction, thereby reducing the friction damage to the plate material during bending.

[0056] Embodiment 3, the difference between embodiment 3 and embodiment 1 is that the following technical features are added: please refer to Figures 8-12 , the pressing plate 31 is further provided with an alarm component 5, the alarm component 5 comprises a reset member 51, the pressing plate 31 is further provided with a guide slot, the guide slot is slidably provided with an arc-shaped block, the arc-shaped block is responsible for supporting the rolling shaft 53, the bottom of the arc-shaped block is provided with a first contact block 52, and the inner bottom of the guide slot is provided with a second contact block 56.

[0057] The alarm component 5 further comprises an alarm circuit, the alarm circuit further comprises a battery and an alarm lamp 55, and the alarm circuit is used to make the alarm lamp 55 electrified when the first contact block 52 and the second contact block 56 are separated.

[0058] The reset member 51 is a strong spring, and the elastic force is between 30-100 Newton.

[0059] The first contact block 52 and the second contact block 56 are made of conductive material, for example: copper material, etc., the first contact block 52, the second contact block 56, the battery and the alarm lamp 55 form a loop; before bending, if the first contact block 52 and the second contact block 56 are separated, it represents that the plate material is not placed on the pressing plate 31, the plate material is pushed to make the plate material press the rolling shaft 53 downward, at this time, the first contact block 52 and the second contact block 56 are in contact, which represents that the plate material has been placed on the pressing plate 31.

[0060] During the bending process, if the first contact block 52 and the second contact block 56 are in contact, it represents that the plate material is being bent, when the plate material is pressed and starts to crack, under the action of the reset member 51, the first contact block 52 and the second contact block 56 are separated, at this time, the alarm lamp 55 is lighted, which represents that the bending work needs to be stopped immediately and the plate material needs to be replaced.

[0061] The above only describes certain exemplary embodiments of the present application in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A bending machine with switchable R-arc strips, comprising a bending machine body, a sheet material conveying component provided on the outside of the bending machine body, the sheet material conveying component being responsible for conveying sheet material to the bending machine body, characterized in that: The bending machine body is provided with a mold switching component and a turning component. The turning component includes a pressing plate located below the sheet material. The turning component is responsible for driving the pressing plate to rotate to complete the bending of the sheet material. The mold switching component includes a first mold bar and a second mold bar, wherein the chamfer radius of the first mold bar is smaller than that of the second mold bar, and the mold switching component is responsible for switching the positions of the first mold bar and the second mold bar so that the sheet metal is bent into a corresponding curvature; The bending machine body is also provided with a distance compensation component, which includes a movable table connected to the flipping component. The distance compensation component is responsible for driving the movable table to move along with the rotation of the pressure plate when the bending machine body uses the second mold bar for bending, thereby compensating for the arc trajectory error caused by the change of the center axis.

2. The R-arc switchable bending machine according to claim 1, characterized in that: The mold switching component also includes a first motor, the output end of the first motor is connected to a switching shaft through a belt drive, the outer end of the switching shaft is fixedly connected to a first plate body and a second plate body, the first plate body is connected to the first mold bar, and the second plate body is connected to the second mold bar.

3. The R-arc switchable bending machine according to claim 2, characterized in that: The flipping component also includes a sector gear and a transmission gear meshing with it. A first support frame is provided on the bending machine body. The side end of the first support frame is rotatably connected to a transmission shaft. One end of the transmission shaft is fixedly connected to a second motor. The transmission gear is sleeved on the transmission shaft, and the pressure plate is connected to the sector gear.

4. The R-arc switchable bending machine according to claim 3, characterized in that: The distance compensation component includes a hydraulic rod, an output end of the hydraulic rod is fixedly connected to a linkage rod, a top of the linkage rod is fixedly connected to the bottom surface of the moving platform, and the hydraulic rod is electrically connected to a controller.

5. The R-arc switchable bending machine according to claim 4, characterized in that: It also includes a movement control component, which includes a calculation module and an angle sensor. The angle sensor is arranged at the side end of the sector gear. The calculation module is electrically connected to the controller. The calculation module includes the following calculation formula: , where R1 is the chamfer radius of the first mold bar, R2 is the chamfer radius of the second mold bar, and α is the rotation angle of the pressure plate.

6. The R-arc switchable bending machine according to claim 5, characterized in that: The bending machine body is also provided with a lifting component, which includes a lifting cylinder. The bottom of the lifting cylinder is connected to a lifting platform. The lifting platform is slidably arranged on the bending machine body through a guide rail, and the first motor is installed on the lifting platform.

7. The R-arc switchable bending machine according to claim 6, characterized in that: The pressing plate is provided with a groove, and a roller is provided on the groove. When the roller is actually working, it rolls close to the sheet material.

8. The R-arc switchable bending machine according to claim 7, characterized in that: The pressure plate is also provided with an alarm component, which includes a reset part. The pressure plate is also provided with a guide groove, on which an arc block is slidably provided. The arc block is responsible for supporting the roller, and a first contact block is provided at the bottom of the arc block, and a second contact block is provided at the inner bottom of the guide groove.

9. The R-arc switchable bending machine according to claim 8, characterized in that: The alarm component further includes an alarm circuit, which further includes a battery and an alarm light. The alarm circuit is used to energize the alarm light when the first contact block is separated from the second contact block.

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