A bending machine with switchable R-curves

Abstract

This invention relates to the field of bending machine technology, specifically disclosing a bending machine with switchable R-curves. The machine includes a bending machine body, a sheet metal conveying component on the outside of the body, which supplies sheet metal to the machine body, and a die switching component and a tilting component on the machine body. The tilting component includes a pressure plate located below the sheet metal and drives the pressure plate to rotate, completing the bending of the sheet metal. The die switching component includes a first die strip and a second die strip, where the chamfer radius of the first die strip is smaller than that of the second die strip. The die switching component switches the positions of the first and second die strips to bend the sheet metal into the corresponding curvature. The bending machine with switchable R-curves provided by this invention, by setting up a die switching component, allows for switching between bending dies, providing two chamfers with different radii, and switching between a large and small chamfer, improving the versatility of the bending machine, eliminating the need for machine downtime for part changes, and increasing production efficiency.

Description

Technical Field

[0001] This invention relates to the field of bending machine technology, and specifically to a bending machine with switchable R-curves. Background Technology

[0002] A bending machine is a piece of equipment used in metal processing, typically for bending metal materials (such as steel plates, aluminum plates, etc.) into desired shapes under pressure. Its applications are wide-ranging, including construction, machinery manufacturing, aerospace, and automotive industries. Bending dies are the tools used by the bending machine to shape and process sheet metal. They primarily achieve the shaping of items by changing the physical state of the material being formed, thus transforming the blank into parts with specific shapes and dimensions under the pressure of the bending machine.

[0003] The existing bending machine is difficult to change bending dies during operation. Every time a die needs to be changed, the worker has to stop the machine, manually remove the previous die, and then replace it with the die to be used, which makes the process very cumbersome. Summary of the Invention

[0004] The purpose of this invention is to provide a bending machine with switchable R-curves to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A bending machine with switchable R-curves includes a bending machine body. A sheet metal conveying component is located on the outer side of the bending machine body, responsible for conveying sheet metal to the bending machine body. The bending machine body is equipped with a die switching component and a tilting component. The tilting component includes a pressure plate located below the sheet metal and is responsible for driving the pressure plate to rotate, completing the sheet metal bending. The die switching component includes 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. The die switching component is responsible for switching the positions of the first and second die strips to bend the sheet metal into a corresponding curvature. The bending machine body is also equipped with a distance compensation component, which includes a moving stage connected to the tilting component. The distance compensation component is responsible for driving the moving stage to move along with the rotating pressure plate when the bending machine body uses the second die strip to compensate for the arc trajectory error caused by the change of the central axis.

[0007] Furthermore, the mold switching component also includes a first motor, the output end of which is connected to a switching shaft via a belt drive, and the outer end of the switching shaft is fixedly connected to a first plate and a second plate, the first plate being connected to a first mold strip and the second plate being connected to a second mold strip.

[0008] Furthermore, 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. 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. The pressure plate is connected to the sector gear.

[0009] Furthermore, the distance compensation component includes a hydraulic rod, the output end of which is fixedly connected to a linkage rod, the top of which is fixedly connected to the bottom surface of the moving platform, and the hydraulic rod is electrically connected to a controller.

[0010] Furthermore, it also includes a motion control component, which comprises a calculation module and an angle sensor. The angle sensor is disposed on the side end of the sector gear. The calculation module is electrically connected to the controller and includes functions for calculating the following formula:

[0011] Where R1 is the chamfer radius of the first mold strip, R2 is the chamfer radius of the second mold strip, and α is the rotation angle of the pressure plate.

[0012] Furthermore, 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, which is slidably mounted on the bending machine body via a guide rail. The first motor is mounted on the lifting platform.

[0013] Furthermore, the pressure plate has a groove, and a roller is provided on the groove. When the roller is actually working, it rolls in close contact with the plate material.

[0014] Furthermore, the pressure plate is also provided with an alarm component, the alarm component includes a reset component, the pressure plate is also 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 provided at the bottom of the arc-shaped block, and a second contact block is provided at the inner bottom of the guide groove.

[0015] Furthermore, the alarm component also includes an alarm circuit, which further includes a battery and an alarm light. The alarm circuit is used to power on the alarm light when the first contact block separates from the second contact block.

[0016] In the above technical solution, the bending machine with switchable R-arc strips provided by the present invention has the following beneficial effects:

[0017] By setting up a die switching component, the bending die can be switched, and two chamfers with different radii can be set, allowing for switching between large and small chamfers. This improves the versatility of the bending machine, eliminates the need to stop for part changes, and increases production efficiency. Furthermore, by setting up a distance compensation component and calculation formula, when switching to the die with the large chamfer, the pressure plate can be moved slowly, allowing the pressure plate to move and rotate at the same time. This ensures that the rotation trajectory of the pressure plate keeps the plate pressing against the sheet metal, thereby compensating for trajectory errors caused by changes in the rotating circular axis.

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

[0019] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall external structure provided in Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the mold switching component structure provided in Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the flipping component structure provided in Embodiment 1 of the present invention;

[0024] Figure 4 This is a side view of the flipping component provided in Embodiment 1 of the present invention;

[0025] Figure 5 This is a schematic diagram of the overall bottom view structure provided in Embodiment 1 of the present invention;

[0026] Figure 6 This is a schematic diagram of the formula calculation provided in Embodiment 1 of the present invention;

[0027] Figure 7 This is a signal transmission diagram of the mobile control component provided in Embodiment 1 of the present invention;

[0028] Figure 8 This is a schematic diagram of the alarm component structure provided in Embodiment 3 of the present invention;

[0029] Figure 9This is a side view of the pressure plate structure provided in Embodiment 3 of the present invention;

[0030] Figure 10 This is an enlarged structural diagram of point A provided in Embodiment 3 of the present invention;

[0031] Figure 11 This is a schematic cross-sectional view of the pressure plate structure provided in Embodiment 3 of the present invention;

[0032] Figure 12 The alarm circuit diagram provided in Embodiment 3 of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[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; 26. Second plate; 3. Tilting component; 31. Pressure 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 component; 54. Groove; 55. Alarm light; 56. Second contact block. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0036] Example 1, please refer to Figure 1-7 A bending machine with switchable R-curves includes a bending machine body 1. A sheet material conveying component is provided on the outside of the bending machine body 1. The sheet material conveying component is responsible for conveying sheet material to the bending machine body 1. A mold switching component 2 and a flipping component 3 are provided on the bending machine body 1. The flipping component 3 includes a pressure plate 31 located below the sheet material. The flipping component 3 is responsible for driving the pressure plate 31 to rotate to complete the bending of the sheet material.

[0037] The mold switching component 2 includes a first mold strip 21 and a second mold strip 22. The chamfer radius of the first mold strip 21 is smaller than that of 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 sheet metal is bent into the corresponding curvature. The bending machine body 1 is also provided with a distance compensation component 4. The distance compensation component 4 includes a moving stage 41 connected to the flipping component 3. When the bending machine body 1 uses the second mold strip 22 for bending, the distance compensation component 4 is responsible for driving the moving stage 41 to move along with the pressure plate 31 to compensate for the arc trajectory error caused by the change of the central axis.

[0038] In a further embodiment of the present invention, the mold switching component 2 further includes a first motor 23, the output end of the first motor 23 is connected to a switching shaft 24 via a belt drive, the outer end of the switching shaft 24 is fixedly connected to a first plate 25 and a second plate 26, the first plate 25 is connected to a first mold strip 21, and the second plate 26 is connected to a second mold strip 22.

[0039] Specifically, a pulley is fixedly sleeved on the output end of the first motor 23, and a pulley is also fixedly sleeved on the outer end of the switching shaft 24. A belt is sleeved on both pulleys. When the first motor 23 starts, the belt and pulley drive the switching shaft 24 to rotate.

[0040] In a further embodiment of the present invention, the flipping component 3 further includes a sector gear 32 and a transmission gear 33 meshing with it. A first support frame 34 is provided on the bending machine body 1. A transmission shaft 36 is rotatably connected to the side end of the first support frame. A second motor 35 is fixedly connected to one end of the transmission shaft 36. The transmission gear 33 is sleeved on the transmission shaft 36. The pressure plate 31 is connected to the sector gear 32.

[0041] In a further embodiment of the present invention, the distance compensation component 4 includes a hydraulic rod 42, the output end of which is fixedly connected to a linkage rod 43, the top of which is fixedly connected to the bottom surface of the moving platform 41, and the hydraulic rod 42 is electrically connected to a controller.

[0042] It also includes a motion control component, which comprises a calculation module and an angle sensor. The angle sensor is disposed on the side end of the sector gear 32. The calculation module is electrically connected to the controller and includes functions to calculate the following formula.

[0043] Where R1 is the chamfer radius of the first mold strip, R2 is the chamfer radius of the second mold strip, and α is the rotation angle of the pressure plate.

[0044] D represents the distance the pressure plate moves. The original formula for the pressure plate is as follows:

[0045] By simplifying using the trigonometric function half-angle formula, we can obtain... .

[0046] In a further embodiment of the present invention, the bending machine body 1 is further provided with a lifting component, the lifting component including a lifting cylinder, the bottom of the lifting cylinder being connected to a lifting platform, the lifting platform being slidably mounted on the bending machine body 1 via a guide rail, and the first motor 23 being mounted on the lifting platform.

[0047] In this invention, when changing from the first mold bar 21 to the second mold bar 22, the lifting cylinder needs to be activated first to raise the lifting platform together with the first mold bar 21 and the second mold bar 22, so that the second mold bar 22 will not encounter motion interference during rotation. Then, the first motor 23 is started, and after the first motor 23 rotates the switching shaft 24 180 degrees, the second mold bar 22 rotates to the bottom. Then, the lifting cylinder is activated again to lower the first mold bar 21 and make it contact the conveyed plate material. The plate material is sandwiched between the first mold bar 21 and the pressure plate 31.

[0048] Specifically, a support plate is provided on the side end of the pressure plate 31. The support plate is parallel to the pressure plate 31 and together they support the plate.

[0049] When bending is required, the second motor 35 and the hydraulic rod 42 are activated simultaneously. The second motor 35 drives the sector gear 32 to rotate via the transmission shaft 36, and the sector gear 32 drives the pressure plate 31 to rotate. The rotation of the pressure plate 31 is used to bend the sheet metal. During the bending process, the movement distance of the end of the hydraulic rod 42 always satisfies the formula. That is, no matter which angle the pressure plate rotates to, the pressure plate 31 will move horizontally by the distance calculated by the above formula.

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

[0051] In practice, the calculation can be performed for every x degree change based on the computing power of the calculation module. That is, whenever α changes by x degrees, the D value is calculated once. The smaller x is, the closer the movement trajectory of the pressure plate 31 is to the actual required value, that is, the more accurate it is.

[0052] Example 2 differs from Example 1 in that the following technical features are added: a groove is provided on the pressure plate 31, and a roller 53 (made of hard metal material) is provided on the groove. The roller 53 rolls closely against the plate material during actual operation.

[0053] The apex of roller 53 is parallel to the top surface of pressure plate 31, and roller 53 is subjected to force during use.

[0054] The roller 53 is rotatably connected inside the groove. The side end of the pressure plate 31 extends into a semi-circular part, and the side end of the support plate is provided with an arc-shaped groove. The arc-shaped groove and the semi-circular part are adapted to each other, so that the support plate can still be tightly attached to the pressure plate 31.

[0055] When the pressure plate 31 rotates, it can carry the roller 53 to roll on the bottom surface of the sheet, thereby converting sliding friction into rolling friction, which can reduce frictional damage to the sheet during bending.

[0056] Example 3 differs from Example 1 in that the following technical features are added: Please refer to... Figure 8-12 The pressure plate 31 is also provided with an alarm component 5, which includes a reset component 51. The pressure plate 31 is also provided with a guide groove, and an arc-shaped block is slidably provided on the guide groove. The arc-shaped block is responsible for supporting the roller 53. A first contact block 52 is provided at the bottom of the arc-shaped block, and a second contact block 56 is provided at the inner bottom of the guide groove.

[0057] The alarm component 5 also includes an alarm circuit, which further includes a battery and an alarm light 55. The alarm circuit is used to power on the alarm light 55 when the first contact 52 is separated from the second contact 56.

[0058] The reset component 51 is a high-strength spring with a spring force between 30 and 100 Newtons.

[0059] The first contact 52 and the second contact 56 are made of conductive materials, such as copper. The first contact 52, the second contact 56, the battery, and the alarm light 55 form a circuit. Before bending, if the first contact 52 and the second contact 56 are separated, it means that the plate is not placed on the pressure plate 31. Push the plate so that the plate press roller 53 is downward. At this time, the first contact 52 and the second contact 56 are in contact, which means that the plate has been placed on the pressure plate 31.

[0060] During the bending process, if the first contact block 52 and the second contact block 56 come into contact, it means that the sheet material is being bent. When the sheet material begins to crack after being squeezed, the first contact block 52 and the second contact block 56 separate under the action of the reset member 51. At this time, the alarm light 55 lights up, indicating that the bending work needs to be stopped immediately and the sheet material needs to be replaced.

[0061] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bending machine with switchable R-curves, comprising a bending machine body, wherein a sheet metal conveying component is disposed on the outer side of the bending machine body, the sheet metal conveying component being responsible for conveying sheet metal to the bending machine body, characterized in that: The bending machine body is equipped with a mold switching component and a flipping component. The flipping component includes a pressure plate located below the sheet metal. The flipping component is responsible for driving the pressure plate to rotate and completing the bending of the sheet metal. The mold switching component includes a first mold strip and a second mold strip. The chamfer radius of the first mold strip is smaller than that of the second mold strip. The mold switching component is responsible for switching the positions of the first mold strip and the second mold strip so that the sheet metal is bent into the corresponding curvature. The bending machine body is also provided with a distance compensation component. The distance compensation component includes a moving table connected to the flipping component. The distance compensation component is responsible for driving the moving table to move along with the pressure plate when the bending machine body is bent using the second mold strip, so as to compensate for the arc trajectory error caused by the change of the central axis. The distance compensation component includes a hydraulic rod, the output end of which is fixedly connected to a linkage rod, the top of which is fixedly connected to the bottom surface of the moving platform, and the hydraulic rod is electrically connected to a controller. It also includes a motion control component, which comprises a calculation module and an angle sensor. The angle sensor is disposed on the side end of the sector gear. The calculation module is electrically connected to the controller and includes functions to calculate the following formula. Where R1 is the chamfer radius of the first mold strip, R2 is the chamfer radius of the second mold strip, and α is the rotation angle of the pressure plate.

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

3. The bending machine with switchable R-arc strips 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. 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. The pressure plate is connected to the sector gear.

4. The bending machine with switchable R-arc strips according to claim 2, characterized in that, The bending machine body is also equipped 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 mounted on the bending machine body via a guide rail. The first motor is mounted on the lifting platform.

5. The bending machine with switchable R-arc strips according to claim 4, characterized in that, The pressure plate has a groove, and a roller is installed on the groove. When the roller is actually working, it rolls in close contact with the plate.

6. The bending machine with switchable R-arc strips according to claim 5, characterized in that, The pressure plate is also provided with an alarm component, which includes a reset component. The pressure plate is also provided with a guide groove, and 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 provided at the bottom of the arc-shaped block, and a second contact block is provided at the inner bottom of the guide groove.

7. The bending machine with switchable R-arc strips according to claim 6, characterized in that, The alarm component also includes an alarm circuit, which further includes a battery and an alarm light. The alarm circuit is used to power on the alarm light when the first contact block separates from the second contact block.

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