Micro-through plate bending machine

Abstract

The present invention relates to the technical field of micro-passage plate assembly processing, and discloses a micro-passage plate bending machine, the technical scheme of which mainly includes a frame body, a placing platform and a flat plate are arranged in the frame body, the flat plate is located above the platform, a power mechanism is arranged on the frame body to drive the flat plate to move up and down, a clamping mechanism for clamping the micro-passage plate assembly on the placing platform is arranged on the placing platform, when the micro-passage plate assembly is bent, the micro-passage plate assembly is first placed on two horizontal plates, and then the micro-passage plate assembly is clamped by the clamping mechanism, and the pre-bending mechanism pre-bends the flat tube by a roller, so that an angle exists between the flat tube and the plumb plane, ensuring that the flat tube can be bent smoothly without breaking, and canceling the setting of the core rod, and through the cooperation between the power mechanism and the rotating mechanism, the two horizontal plates are rotated to complete the bending of the micro-passage plate assembly, ensuring that there is a gap between each two adjacent flat tubes after bending.

Description

Technical Field

[0001] The invention relates to the technical field of micro-through plate assembly processing, and more particularly to a micro-through plate bending machine. Background Art

[0002] The micro-passage plate assembly is composed of a plurality of flat tubes and two oppositely arranged micro-passage plates, wherein the flat tube is arranged between opposite sides of the two micro-passage plates, and the plurality of flat tubes are arranged in an array;

[0003] The general equipment for bending the micro-passage plate assembly has the following bending process: firstly, the micro-passage plate assembly is loaded, then the micro-passage plate assembly is clamped by the clamping unit, and the mandrel is inserted into the side of the bending position (i.e., the flat tube) of the micro-passage plate assembly adjacent to the inner angle of the bend, and then the bending unit bends the micro-passage plate assembly;

[0004] After the micro-pass plate assembly is bent by the above method, each two adjacent flat tubes will fit together. The flat tubes that fit together will reduce the heat exchange efficiency of the micro-pass plate assembly heat exchanger, resulting in defective products, reducing the qualified rate of finished products, and thus reducing work efficiency. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a micro-plate bending machine for ensuring that there is a gap between every two adjacent flat tubes after bending.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a micro-pass plate bending machine comprises a frame body, a placing platform and a flat plate are arranged in the frame body, the flat plate is located above the platform, a power mechanism is arranged on the frame body to drive the flat plate to move up and down, a clamping mechanism for clamping the micro-pass plate assembly on the placing platform is arranged on the placing platform, the clamping mechanism comprises a clamping part, and a moving component which drives the clamping mechanism to move along the length direction of the micro-pass plate assembly is also arranged on the placing platform, a deformation mechanism for pre-bending the flat tube is arranged at the bottom of the flat plate so that a depression is formed on the top of the flat tube, the placing platform comprises two transverse plates, the clamping parts are respectively arranged under the two transverse plates, the opposite ends of the two transverse plates are respectively hinged to the frame body, and a rotating mechanism for driving the two transverse plates to rotate synchronously so that the ends of the two transverse plates which are away from each other are close to or away from each other is arranged on the flat plate.

[0007] As a further improvement of the present invention, the power mechanism includes a servo motor and a screw rod, the screw rod is connected to the flat plate through a linear bearing, the screw rod is respectively arranged on two opposite sides of the flat plate, one end of the screw rod is rotatably connected to the bottom of the frame body, the other end of the screw rod passes through the top surface of the frame body and is fixedly connected to a first transmission wheel, the servo motor is fixedly connected to the top of the frame body, and the output end of the servo motor is fixedly connected to a second transmission wheel, and the first transmission wheel and the two second transmission wheels are transmitted through a transmission belt.

[0008] As a further improvement of the present invention, the four corners of the plate are respectively connected with smooth rods through linear bearings, one end of the smooth rod is fixedly connected to the top of the frame body, and the other end of the smooth rod is fixedly connected to the bottom of the frame body.

[0009] As a further improvement of the present invention, the clamping part includes a through groove, a pressure plate, a sliding plate and a cylinder. The through grooves are respectively arranged on both sides of the transverse plate in the length direction of the micro-through plate assembly. The two ends of the pressure plate are respectively fixedly connected with fixed plates. The fixed plates pass through the through grooves and are fixedly connected to the output ends of the cylinders. The cylinder drives the pressure plate to move up and down. The sliding plate is slidably connected to the bottom of the transverse plate, and the sliding plate is fixedly connected to the cylinder.

[0010] As a further improvement of the present invention, the moving component includes a first motor and a first gear, the first motor is fixedly connected to the sliding plate, the output shaft of the first motor is fixedly connected to the first gear, and a first rack is fixedly connected to the bottom of the cross plate, and the first rack is meshed with the first gear.

[0011] As a further improvement of the present invention, the deformation mechanism includes a second motor and a bracket, the bracket is fixedly connected to the bottom of the flat plate, the second motor is fixedly connected to the bracket, the output of the second motor is fixedly connected to a screw, a connecting block is threadedly connected to the screw, the top of the connecting block is slidably connected to the bracket, the second motor drives the connecting block to move along the width direction of the micro-pass plate assembly, and the bottom of the connecting block is rotatably connected to a roller.

[0012] As a further improvement of the present invention, after the flat tube is pre-bent, the angle between the concave part of the flat tube and the plumb plane ranges from 25 degrees to 35 degrees.

[0013] As a further improvement of the present invention, the rotating mechanism includes a third motor and two sliding frames, the output end of the third motor is fixedly connected to the second gear, the sliding frame is slidably connected to the flat plate, and the two sliding frames are respectively fixedly connected with second racks. The third motor drives the two sliding frames to move away from or approach each other through the second gear and the second rack. The sliding frames correspond to the cross plates one by one, and a connecting rod is hinged between the sliding frames and the cross plates.

[0014] As a further improvement of the present invention, a translation mechanism is further provided at the bottom of the frame body, and the translation mechanism is used to drive the two transverse plates to move away from or closer to each other on a horizontal plane.

[0015] As a further improvement of the present invention, the translation mechanism includes a fourth motor and two support frames, the support frames correspond to the cross plates one by one, the cross plates are hinged on the support frames, a fixed frame is fixedly connected to the bottom of the frame body, the fourth motor is fixedly connected to the fixed frame, the support frame and the fixed frame are slidably connected, the output end of the fourth motor is fixedly connected to the third gear, and the support frames are respectively fixedly connected to third racks, and the fourth motor drives the two support frames to move away from or closer to each other through the third gear and the third rack.

[0016] The beneficial effects of the present invention are as follows: when the present invention bends the micro-passage plate assembly, the micro-passage plate assembly is first placed on two horizontal plates, and then the micro-passage plate assembly is clamped by a clamping mechanism, and the pre-bending mechanism pre-bends the flat tube by rollers, so that there is an angle between the flat tube and the plumb plane, ensuring that the flat tube can be bent smoothly without breaking, and the setting of the core rod is cancelled, and the two horizontal plates are rotated through the cooperation between the power mechanism and the rotating mechanism to complete the bending of the micro-passage plate assembly, ensuring that there is a gap between each two adjacent flat tubes after bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the present invention in a bent state;

[0020] Figure 4 It is a structural schematic diagram of the deformation mechanism in the present invention;

[0021] Figure 5 It is a structural schematic diagram of the clamping mechanism in the present invention;

[0022] Figure 6It is a structural schematic diagram of the rotating mechanism in the present invention;

[0023] Figure 7 is a structural schematic diagram of the clamping mechanism of the present invention from another perspective;

[0024] Figure 8 It is a schematic diagram of the structure of the present invention after adding a translation mechanism;

[0025] Fig. 9 It is a structural schematic diagram of the translation mechanism in the present invention.

[0026] 1. Frame body; 11. Flat plate; 12. Horizontal plate; 2. Power mechanism; 21. Servo motor; 22. Screw rod; 23. First transmission wheel; 24. Second transmission wheel; 25. Smooth rod; 3. Clamping mechanism; 31. Clamping part; 311. Through groove; 312. Pressing plate; 313. Sliding plate; 314. Cylinder; 315. Fixed plate; 4. Moving assembly; 41. First motor; 42. First gear; 43. First rack; 5. Deformation mechanism; 51. Second motor; 52. Bracket; 53. Screw rod; 54. Connecting block; 55. Roller; 6. Rotating mechanism; 61. Third motor; 62. Sliding frame; 63. Second gear; 64. Second rack; 65. Connecting rod; 7. Translation mechanism; 71. Fourth motor; 72. Support frame; 73. Fixed frame; 74. Third gear; 75. Third rack. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0028] Reference Figures 1 to 9As shown, the micro-through plate bending machine of this embodiment includes a frame body 1, a placing platform and a flat plate 11 are arranged in the frame body 1, the flat plate 11 is located above the platform, the placing platform includes two horizontal plates 12, and the opposite ends of the two horizontal plates 12 are respectively hinged to the frame body 1, and a power mechanism 2 for driving the flat plate 11 to move up and down is arranged on the frame body 1, and the power mechanism 2 includes a servo motor 21 and a screw rod 22, and the screw rod 22 is connected to the flat plate 11 through a linear bearing, and the opposite sides of the flat plate 11 are respectively provided with screw rods 22, and one end of the screw rod 22 is hinged to the frame The bottom of the frame body 1 is rotatably connected, the other end of the screw rod 22 passes through the top surface of the frame body 1 and is fixedly connected with a first transmission wheel 23, the servo motor 21 is fixedly connected to the top of the frame body 1, and the output end of the servo motor 21 is fixedly connected with a second transmission wheel 24, the first transmission wheel 23 and the two second transmission wheels 24 are driven by a transmission belt, the servo motor 21 is started, and the two screw rods 22 are driven to rotate through the first transmission wheel 23, the second transmission wheel 24 and the transmission belt, thereby driving the plate 11 to move up and down in the frame body 1;

[0029] The placement platform is provided with a clamping mechanism 3 for clamping the micro-pass plate assembly on the placement platform, the clamping mechanism 3 includes a clamping portion 31, and the clamping portions 31 are respectively provided under the two transverse plates 12. The clamping portions 31 include a through slot 311, a pressure plate 312, a sliding plate 313 and a cylinder 314. The transverse plates 12 are respectively provided with through slots 311 on both sides of the length direction of the micro-pass plate assembly, and the two ends of the pressure plate 312 are respectively fixedly connected with fixed plates 315, and the fixed plates 315 pass through the through slots 311 and are fixedly connected to the output end of the cylinder 314. , the cylinder 314 drives the pressing plate 312 to move up and down, the sliding plate 313 is slidably connected to the bottom of the horizontal plate 12, and the sliding plate 313 is fixedly connected to the cylinder 314. When the micro-passage plate assembly is clamped, the micro-passage plate assembly is placed on the two horizontal plates 12, and the moving assembly 4 drives the two pressing plates 312 to approach each other through the fixed plate 315, so that the two fixed plates 315 are respectively located above the two micro-passage plate assemblies, and then the cylinder 314 drives the pressing plate 312 to move downward, and the micro-passage plate assembly is clamped between the pressing plate 312 and the horizontal plate 12;

[0030] The placement platform is also provided with a moving assembly 4 that drives the clamping mechanism 3 to move along the length direction of the micro-pass plate assembly. The moving assembly 4 includes a first motor 41 and a first gear 42. The first motor 41 is fixedly connected to the sliding plate 313. The output shaft of the first motor 41 is fixedly connected to the first gear 42. A first rack 43 is fixedly connected to the bottom of the cross plate 12. The first rack 43 is meshed with the first gear 42. When the first motor 41 is started, the first gear 42 is driven to rotate. The first gear 42 is meshed with the first rack 43 to drive the two pressing plates 312 to move closer to or away from each other.

[0031] The flat plate 11 is provided with a deformation mechanism 5 for pre-bending the flat tube at the bottom. The flat tube is pre-bent so that a depression is formed on the top of the flat tube, so that during the bending process of the two micro-pass plate assemblies, the ends of the flat tube that are opposite to the bending direction of the micro-pass plate assembly are ensured not to break, so that the flat tube can be smoothly and completely bent. The deformation mechanism 5 includes a second motor 51 and a bracket 52. The bracket 52 is fixedly connected to the bottom of the flat plate 11. The second motor 51 is fixedly connected to the bracket 52. The output of the second motor 51 is fixedly connected to a screw 53. The screw 53 is threadedly connected to a connecting block 54. The top of the connecting block 54 is slidably connected to the bracket 52, and the second motor 51 drives the connecting block 54 to move along the width direction of the micro-pass plate assembly. The bottom of the connecting block 54 is rotatably connected to the roller 55. When the flat tube is pre-bent, the power mechanism 2 drives the plate 11 to move downward, so that the roller 55 presses the flat tube, and then the second motor 51 is started to drive the screw 53 to rotate, so that the connecting block 54 moves one way along the width direction of the micro-pass plate assembly to complete the pre-bending of the flat tube, and then the power mechanism 2 drives the plate 11 to move upward, and the roller 55 is also driven by the second motor 51 to complete the reset;

[0032] The flat plate 11 is provided with a rotating mechanism 6 for driving the two horizontal plates 12 to rotate synchronously so that the ends of the two horizontal plates 12 that are away from each other are close to or away from each other. The rotating mechanism 6 includes a third motor 61 and two sliding frames 62. The output end of the third motor 61 is fixedly connected to the second gear 63. The sliding frame 62 is slidably connected to the flat plate 11. The two sliding frames 62 are respectively fixedly connected with second racks 64. The third motor 61 drives the two sliding frames 62 to move away from or close to each other through the second gear 63 and the second rack 64. The sliding frames 62 correspond to the horizontal plates 12 one by one, and a connecting rod 65 is hinged between the sliding frames 62 and the horizontal plates 12. Four connecting rods 65 can be provided. The two ends of the sliding frames 62 are respectively hinged with connecting rods 65, and one end of the four connecting rods 65 is respectively hinged to the side of the two horizontal plates 12 that are away from each other. When the deformation mechanism 5 pre-bends the flat tube, the power mechanism 2 drives the flat plate 11 to move downward. At this time, the third motor 61 in the rotating mechanism 6 is started, and the two sliding frames 62 are driven to approach each other through the second gear 63 and the second rack 64 to ensure that the cross plate 12 is not deformed. When the rotating mechanism 6 bends the micro-pass plate assembly, the power mechanism 2 drives the flat plate 11 to move upward, and the position of the sliding frame 62 remains unchanged, so that the sliding frame 62 rotates the two cross plates 12 through the connecting rod 65. The two cross plates 12 face away from each other at one end and approach each other, and the cross plates 12 are bent to ensure that there is a gap between each adjacent two flat tubes after the bending is completed. After the bending is completed, the third motor 61 drives the two sliding frames 62 away from each other, and the power mechanism 2 drives the flat plate 11 to move downward to complete the resetting of the cross plate 12.

[0033] Reference Figure 1 , Figure 2 and Figure 3 As shown, the four corners of the flat plate 11 are connected to smooth rods 25 through linear bearings, one end of the smooth rod 25 is fixedly connected to the top of the frame body 1, and the other end of the smooth rod 25 is fixedly connected to the bottom of the frame body 1. Through the arrangement of the smooth rod 25, the flat plate 11 can move up and down in the frame body 1 more smoothly.

[0034] After the flat tube is pre-bent, the angle between the concave part of the flat tube and the plumb plane is in the range of 25 to 35 degrees. The pre-bending angle is set between 25 and 35 degrees. Within this range, it is ensured that after the micro-pass plate assembly is bent, there is a gap between each two adjacent flat tubes, and that the side of the flat tube that is opposite to the bending direction of the micro-pass plate assembly will not break, so as to ensure the qualified rate of the finished product. The pre-bending angle is preferably 30 degrees.

[0035] Reference Figure 8 and Fig. 9 As shown, a translation mechanism 7 is also provided at the bottom of the frame body 1, and the translation mechanism 7 is used to drive the two horizontal plates 12 to move away from or closer to each other on the horizontal plane. The translation mechanism 7 includes a fourth motor 71 and two support frames 72, the support frames 72 correspond to the horizontal plates 12 one by one, the horizontal plates 12 are hinged on the support frames 72, a fixed frame 73 is fixedly connected to the bottom of the frame body 1, the fourth motor 71 is fixedly connected to the fixed frame 73, the support frames 72 and the fixed frames 73 are slidably connected, the output end of the fourth motor 71 is fixedly connected to the third gear 74, and the support frames 72 are respectively fixedly connected to the third rack 75, and the fourth motor 71 drives the two support frames 72 to move away from or closer to each other through the third gear 74 and the third rack 75. The translation mechanism 7 works after the bending mechanism completes the bending of the micro-passage plate assembly, so that the two micro-passage plate assemblies after bending are close to each other in the horizontal plane direction, so that the two ends of the flat tube are close to each other, and the gap between each adjacent two flat tubes is increased.

[0036] Working principle: When clamping the micro-pass plate assembly, the micro-pass plate assembly is placed on two transverse plates 12, the first motor 41 is started, driving the first gear 42 to rotate, and the first gear 42 drives the two pressing plates 312 to approach each other through meshing with the first rack 43, so that the two fixed plates 315 are respectively located above the two micro-pass plate assemblies, and then the cylinder 314 drives the pressing plate 312 to move downward, clamping the micro-pass plate assembly between the pressing plate 312 and the transverse plate 12, and then the power mechanism 2 drives the flat plate 11 to move downward, so that the roller 55 presses the flat tube, and then the second motor 51 is started to drive the screw 53 to rotate, so that the connecting block 54 moves a single distance along the width direction of the micro-pass plate assembly, completing the pre-bending of the flat tube, so that The angle between the flat tube and the plumb plane ranges from 25 degrees to 35 degrees. When the deformation mechanism 5 pre-bends the flat tube, the power mechanism 2 drives the flat plate 11 to move downward. At this time, the third motor 61 in the rotating mechanism 6 is started, and the two sliding frames 62 are driven to approach each other through the second gear 63 and the second rack 64 to ensure that the cross plate 12 is not deformed. When the rotating mechanism 6 bends the micro-pass plate assembly, the power mechanism 2 drives the flat plate 11 to move upward, and the position of the sliding frame 62 remains unchanged, so that the sliding frame 62 rotates the two cross plates 12 through the connecting rod 65, and the two cross plates 12 move away from each other at one end and approach each other, and the cross plates 12 are bent to ensure that there is a gap between each adjacent two flat tubes after the bending is completed.

[0037] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A micro-plate bending machine, comprising a frame body (1), characterized in that: A placement platform and a flat plate (11) are provided in the frame body (1), the flat plate (11) is located above the platform, a power mechanism (2) is provided on the frame body (1) for driving the flat plate (11) to move up and down, a clamping mechanism (3) is provided on the placement platform for clamping the micro-passage plate assembly on the placement platform, the clamping mechanism (3) comprises a clamping portion (31), and a moving component (4) is also provided on the placement platform for driving the clamping mechanism (3) to move along the length direction of the micro-passage plate assembly, A deformation mechanism (5) for pre-bending the flat tube is provided at the bottom of the flat plate (11) so that a depression is formed at the top of the flat tube. The placement platform comprises two transverse plates (12). The clamping parts (31) are respectively provided below the two transverse plates (12). The opposite ends of the two transverse plates (12) are respectively hinged to the frame body (1). The flat plate (11) is provided with a rotation mechanism (6) for driving the two transverse plates (12) to rotate synchronously so that the ends of the two transverse plates (12) that are away from each other are moved closer to or away from each other. The deformation mechanism (5) comprises a second motor (51) and a bracket (52), wherein the bracket (52) is fixedly connected to the bottom of the plate (11), the second motor (51) is fixedly connected to the bracket (52), the output of the second motor (51) is fixedly connected to a screw rod (53), a connecting block (54) is threadedly connected to the screw rod (53), the top of the connecting block (54) is slidably connected to the bracket (52), the second motor (51) drives the connecting block (54) to move along the width direction of the micro-pass plate assembly, and the bottom of the connecting block (54) is rotatably connected to a roller (55); The rotating mechanism (6) comprises a third motor (61) and two sliding frames (62), the output end of the third motor (61) is fixedly connected to the second gear (63), the sliding frame (62) is slidably connected to the flat plate (11), and the two sliding frames (62) are respectively fixedly connected to a second rack (64), the third motor (61) drives the two sliding frames (62) to move away from or approach each other through the second gear (63) and the second rack (64), the sliding frames (62) correspond to the transverse plate (12) one by one, and a connecting rod (65) is hinged between the sliding frame (62) and the transverse plate (12).

2. The micro-plate bending machine according to claim 1, characterized in that: The power mechanism (2) comprises a servo motor (21) and a screw rod (22); the screw rod (22) is connected to the plate (11) via a linear bearing; the screw rods (22) are respectively arranged on opposite sides of the plate (11); one end of the screw rod (22) is rotatably connected to the bottom of the frame body (1); the other end of the screw rod (22) passes through the top surface of the frame body (1) and is fixedly connected to a first transmission wheel (23); the servo motor (21) is fixedly connected to the top of the frame body (1); and the output end of the servo motor (21) is fixedly connected to a second transmission wheel (24); transmission is carried out between the first transmission wheel (23) and the two second transmission wheels (24) via a transmission belt.

3. The micro-plate bending machine according to claim 2, characterized in that: The four corners of the flat plate (11) are respectively connected to smooth rods (25) via linear bearings, one end of the smooth rod (25) is fixedly connected to the top of the frame body (1), and the other end of the smooth rod (25) is fixedly connected to the bottom of the frame body (1).

4. The micro-through plate bending machine according to claim 1, characterized in that: The clamping portion (31) comprises a through slot (311), a pressure plate (312), a sliding plate (313) and a cylinder (314); the through slots (311) are respectively arranged on both sides of the transverse plate (12) in the length direction of the micro-pass plate assembly; both ends of the pressure plate (312) are respectively fixedly connected with fixing plates (315); the fixing plates (315) pass through the through slot (311) and are fixedly connected to the output end of the cylinder (314); the cylinder (314) drives the pressure plate (312) to move up and down; the sliding plate (313) is slidably connected to the bottom of the transverse plate (12); and the sliding plate (313) is fixedly connected to the cylinder (314).

5. The micro-through plate bending machine according to claim 4, characterized in that: The moving assembly (4) comprises a first motor (41) and a first gear (42); the first motor (41) is fixedly connected to the sliding plate (313); the output shaft of the first motor (41) is fixedly connected to the first gear (42); a first rack (43) is fixedly connected to the bottom of the transverse plate (12); and the first rack (43) is meshed with the first gear (42).

6. The micro-through plate bending machine according to claim 1, characterized in that: After the flat tube is pre-bent, the angle between the concave part of the flat tube and the plumb plane ranges from 25 degrees to 35 degrees.

7. The micro-plate bending machine according to any one of claims 1 to 6, characterized in that: A translation mechanism (7) is also provided at the bottom of the frame body (1), and the translation mechanism (7) is used to drive the two transverse plates (12) to move away from or closer to each other on a horizontal plane.

8. The micro-plate bending machine according to claim 7, characterized in that: The translation mechanism (7) comprises a fourth motor (71) and two support frames (72), the support frames (72) corresponding to the transverse plates (12) one by one, the transverse plates (12) being hinged on the support frames (72), a fixing frame (73) being fixedly connected to the bottom of the frame body (1), the fourth motor (71) being fixedly connected to the fixing frame (73), the support frames (72) and the fixing frames (73) being slidably connected, the output end of the fourth motor (71) being fixedly connected to a third gear (74), the support frames (72) being respectively fixedly connected to third racks (75), the fourth motor (71) drives the two support frames (72) to move away from or closer to each other through the third gear (74) and the third rack (75).

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