Seat armrest pipe bending device

Abstract

The utility model relates to the field of armrest bending, and discloses a seat armrest pipe bending device which comprises a fixing plate, a supporting folded plate is fixed to the top face of the fixing plate, a bending sleeve is rotatably arranged in the supporting folded plate, a rotating hole is formed in the top face of the supporting folded plate, a positioning groove is formed in the top face of the fixing plate, and a clamping groove is formed in the top face of the fixing plate. The central axis of the rotating hole and the central axis of the positioning groove are located on the same straight line, two rotating columns are fixed to the surface of the bending sleeve and rotationally inserted into the rotating hole and the positioning groove correspondingly, a shaping plate is fixed to the top face of the fixing plate, and a flame gun is arranged on one side of the shaping plate. A nozzle of the flame gun is inserted into the shaping plate in a penetrating mode, and a connecting strip is fixed to the surface of the bent sleeve. According to the utility model, the bending part of the handrail pipe is heated, so that the metal at the bending part of the handrail pipe can be softened, the handrail pipe is prevented from cracking due to the limitation of the ductility of the metal when being bent, and the damage rate of the finished handrail bent pipe is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of armrest bending, in particular to a chair armrest pipe bending device. Background Art

[0002] Seats are generally composed of different pipes and fabrics. The armrest tubes need to be bent and punched because of their installation locations and the different models of corresponding leisure tables and chairs. Existing armrest tubes are generally bent by a pipe bending machine.

[0003] According to the Chinese patent with publication number: CN213701422U, a handrail pipe bending device with a punching function includes a frame, a fixed frame is arranged on the frame; a positioning block is arranged at the bottom end of the fixed frame, a plurality of No. 1 placement slots are arranged on the positioning block, and a No. 1 cylinder facing downward is arranged on the top of the fixed frame; a pressure block is connected to the No. 1 cylinder, and a plurality of No. 2 placement slots arranged opposite to the No. 1 placement slots are arranged on the pressure block; a rotating shaft is arranged on one side of the fixed frame, a bending lower die and a rotating frame are sleeved on the rotating shaft, and the rotating frame is located between the bending lower die and the frame; a No. 2 cylinder facing downward is arranged on the top of the rotating frame, a connecting block is connected to the No. 2 cylinder, a bending upper die is connected to the connecting block, and a plurality of No. 3 placement slots are arranged on the bending upper die; a plurality of No. 4 placement slots arranged opposite to the No. 3 placement slots are arranged on the bending lower die, and a punching die is arranged on each No. 4 placement slot.

[0004] In the above scheme, a cylinder is used to push a pressure block to bend the handrail pipe, which still has the following disadvantages: when the handrail pipe is bent, the metal at the bending part of the handrail pipe may be broken due to the limitation of the ductility of the metal at the bending part of the handrail pipe, thereby increasing the damage rate of the finished handrail pipe. Utility Model Content

[0005] The utility model aims to provide a chair armrest tube bending device to solve the problem that the metal at the bending part of the armrest tube may be broken due to the limitation of the ductility of the metal at the bending part of the armrest tube, thereby increasing the damage rate of the finished armrest tube bending product.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a seat armrest bending device, including a fixing plate, a supporting folding plate is fixed on the top surface of the fixing plate, a bending sleeve is rotatably arranged inside the supporting folding plate, a rotating hole is opened on the top surface of the supporting folding plate, a positioning groove is opened on the top surface of the fixing plate, the central axis of the rotating hole and the positioning groove are in the same straight line, two rotating columns are fixed on the surface of the bending sleeve, the two rotating columns are rotatably inserted with the rotating hole and the positioning groove respectively, a shaping plate is fixed on the top surface of the fixing plate, a flamethrower is arranged on one side of the shaping plate, the nozzle of the flamethrower is inserted through the shaping plate, a connecting strip is fixed on the surface of the bending sleeve, and a handle is fixed on one side of the connecting strip.

[0007] Preferably, a sliding opening is provided on the top surface of the fixed plate, a sliding plate is slidably arranged inside the sliding opening, a servo motor is fixed to one side of the fixed plate, a through hole is provided on one side of the fixed plate, the output shaft of the servo motor is rotatably inserted into the through hole, a threaded rod is fixed to one end of the output shaft of the servo motor, the threaded rod is threadedly connected to the sliding plate, and two limit plates are fixed to the top surface of the sliding plate.

[0008] Preferably, limiting strips are fixed on both sides of the sliding plate, and limiting grooves are provided on both sides of the interior of the sliding opening, and the limiting grooves are slidably inserted with the limiting strips.

[0009] Preferably, a placement groove is provided on one side of the limiting plate, and an intercepting plate is slidably inserted into the placement groove.

[0010] Preferably, two extrusion plates are slidably arranged between the two limit plates, a fixing ring is fixed on one side of the extrusion plate, a bearing is fixed inside the fixing ring, the inner wall surface of the inner ring of the bearing is fixed to the surface of the push rod, the push rod is threadedly connected to the limit plate, two stabilizing rods are fixed on one side of the extrusion plate, the stabilizing rods are slidably plugged into the limit plate, and a number of anti-slip strips are fixed between the two sides of the two extrusion plates close to each other.

[0011] Preferably, support columns are fixed at the four corners of the bottom surface of the fixed plate, and anti-slip pads are fixed at the bottom ends of the support columns.

[0012] Compared with the prior art, a chair armrest bending device adopting the above technical solution has the following features:

[0013] Beneficial effects:

[0014] 1. The staff will first place the armrest tube of the seat on the top surface of the fixed plate, and then insert one end of the armrest metal tube into the bending sleeve, and adjust the length of the armrest tube entering the bending sleeve according to the specifications of the required armrest. After the adjustment is completed, the surface of the armrest tube will contact the surface of the shaping plate, and then the staff will start the flamethrower. The flame sprayed by the flamethrower will heat the surface of the armrest tube in contact with the shaping plate until the surface of the bending part of the armrest tube is burned red. Then the staff will hold their hands on the handle and use the connecting strip to flip the bending sleeve, so that the armrest tube can be bent along the surface of the shaping plate. After heating the bending part of the armrest tube, the metal at the bending part of the armrest tube can be softened, avoiding cracks in the armrest tube due to the limitation of metal ductility when bending, and reducing the damage rate of the finished armrest bent tube;

[0015] Second, after the handrail tube is placed on the top surface of the fixed plate, the handrail tube is between the two limit plates. The limit plates are used to intercept and prevent one end of the handrail tube from being displaced when the handrail tube is bent. In addition, when the handrail tube to be bent is shorter, the staff will start the servo motor. The output shaft of the servo motor will drive the threaded rod to rotate. The threaded connection between the threaded rod and the sliding plate is used to push the sliding plate to move inside the sliding port toward the bending sleeve. The distance between the sliding plate and the bending sleeve is shortened, and handrail bends of different lengths can be processed and bent, which increases the applicability of processing handrail bends.

[0016] 3. When the handrail tube is placed between the two limit plates, the staff will rotate the push rod, and the rotating push rod will use the threaded connection with the limit plate to push the two extrusion plates closer to each other, and finally contact the surface of the handrail tube, fixing the position of the handrail tube between the two limit plates. Since there are multiple anti-slip strips between the surface of the handrail tube and the extrusion plate, the anti-slip strips are made of rubber, which can prevent the handrail tube from slipping and protect the surface of the handrail tube from being scratched, thereby increasing the aesthetics of the finished handrail bent tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of an embodiment.

[0018] Figure 2 It is an exploded perspective schematic diagram of an embodiment.

[0019] Figure 3 It is a schematic diagram of the explosion at the limiting plate and the intercepting plate in the embodiment.

[0020] Figure 4 It is a schematic diagram of the explosion of the limiting plate and the stabilizing bar in the embodiment.

[0021] In the figure: 1. fixed plate; 2. supporting folding plate; 3. bending sleeve; 4. rotating hole; 5. rotating column; 6. positioning groove; 7. shaping plate; 8. flamethrower; 9. connecting strip; 10. handle; 11. sliding mouth; 12. sliding plate; 13. servo motor; 14. penetration hole; 15. threaded rod; 16. limit plate; 17. limit groove; 18. limit strip; 19. placement groove; 20. intercepting plate; 21. extrusion plate; 22. push rod; 23. stabilizing rod; 24. anti-slip strip; 25. fixing ring; 26. supporting column; 27. anti-slip pad. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown, a seat armrest bending device comprises a fixing plate 1, a supporting folding plate 2 is fixed on the top surface of the fixing plate 1, a bending sleeve 3 is rotatably arranged inside the supporting folding plate 2, a rotating hole 4 is opened on the top surface of the supporting folding plate 2, a positioning groove 6 is opened on the top surface of the fixing plate 1, the central axis of the rotating hole 4 and the positioning groove 6 are in the same straight line, two rotating columns 5 are fixed on the surface of the bending sleeve 3, the two rotating columns 5 are rotatably inserted with the rotating hole 4 and the positioning groove 6 respectively, a shaping plate 7 is fixed on the top surface of the fixing plate 1, a flamethrower 8 is arranged on one side of the shaping plate 7, the nozzle of the flamethrower 8 is inserted through the shaping plate 7, a connecting strip 9 is fixed on the surface of the bending sleeve 3, and a handle 10 is fixed on one side of the connecting strip 9.

[0024] During use, the staff will first place the armrest tube of the seat on the top surface of the fixing plate 1, and then the staff will insert one end of the armrest metal tube into the interior of the bending sleeve 3, and adjust the length of the armrest tube entering the interior of the bending sleeve 3 according to the specifications of the required armrest. After the adjustment is completed, the surface of the armrest tube will contact the surface of the shaping plate 7, and then the staff will start the flamethrower 8. The flame sprayed by the flamethrower 8 will heat the surface of the armrest tube in contact with the shaping plate 7 until the surface of the bending part of the armrest tube is burned red, and then the staff will hold the handle 10 and use the connecting strip 9 to flip the bending sleeve 3, so that the armrest tube can be bent along the surface of the shaping plate 7. After heating the bending part of the armrest tube, the metal at the bending part of the armrest tube can be softened, thereby avoiding cracks in the armrest tube due to the limitation of metal ductility when bending, thereby reducing the damage rate of the finished armrest bent tube.

[0025] like Figure 1 and Figure 2As shown, a sliding opening 11 is provided on the top surface of the fixed plate 1, a sliding plate 12 is slidably arranged inside the sliding opening 11, a servo motor 13 is fixed on one side of the fixed plate 1, a through hole 14 is provided on one side of the fixed plate 1, the output shaft of the servo motor 13 is rotatably inserted into the through hole 14, a threaded rod 15 is fixed on one end of the output shaft of the servo motor 13, the threaded rod 15 is threadedly connected to the sliding plate 12, two limit plates 16 are fixed on the top surface of the sliding plate 12, limit strips 18 are respectively fixed on both sides of the sliding plate 12, and limit grooves 17 are respectively provided on both sides of the inside of the sliding opening 11, and the limit grooves 17 and the limit strips 18 are slidably inserted.

[0026] During use, after the handrail tube is placed on the top surface of the fixed plate 1, the handrail tube is located between the two limit plates 16. The limit plates 16 are used to intercept and avoid displacement of one end of the handrail tube when bending the handrail tube. In addition, when the handrail tube to be bent is shorter, the staff will start the servo motor 13. The rotating output shaft of the servo motor 13 will drive the threaded rod 15 to rotate. The threaded connection between the threaded rod 15 and the sliding plate 12 is used to push the sliding plate 12 to move inside the sliding opening 11 toward the bending sleeve 3, thereby shortening the distance between the sliding plate 12 and the bending sleeve 3. Therefore, handrail bends of different lengths can be processed and bent, thereby increasing the applicability of processing handrail bends.

[0027] like Figure 2-Figure 4 As shown, a placement groove 19 is opened on one side of the limiting plate 16, and an intercepting plate 20 is slidably inserted inside the placement groove 19, and two extrusion plates 21 are slidably arranged between the two limiting plates 16, and a fixing ring 25 is fixed on one side of the extrusion plate 21, and a bearing is fixed inside the fixing ring 25, and the inner wall surface of the inner ring of the bearing is fixed to the surface of the push rod 22, and the push rod 22 is threadedly connected to the limiting plate 16, and two stabilizing rods 23 are fixed on one side of the extrusion plate 21, and the stabilizing rod 23 is slidably inserted into the limiting plate 16, and a number of anti-slip strips 24 are fixed between the two sides of the two extrusion plates 21 that are close to each other, and support columns 26 are respectively fixed at the four corners of the bottom surface of the fixed plate 1, and anti-slip pads 27 are fixed to the bottom ends of the support columns 26.

[0028] During use, when the handrail tube is placed between the two limit plates 16, the staff will rotate the push rod 22, and the rotating push rod 22 will use the threaded connection with the limit plate 16 to push the two extrusion plates 21 closer to each other, and finally contact the surface of the handrail tube, fixing the position of the handrail tube between the two limit plates 16. Since there are multiple anti-slip strips 24 between the surface of the handrail tube and the extrusion plate 21, the anti-slip strips 24 are made of rubber, which can prevent the handrail tube from slipping and protect the surface of the handrail tube from being scratched, thereby increasing the aesthetics of the finished handrail bent tube.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chair armrest bending device, comprising a fixing plate (1), characterized in that: A supporting folding plate (2) is fixed on the top surface of the fixing plate (1), a bending sleeve (3) is rotatably arranged inside the supporting folding plate (2), a rotating hole (4) is provided on the top surface of the supporting folding plate (2), a positioning groove (6) is provided on the top surface of the fixing plate (1), the central axis of the rotating hole (4) and the positioning groove (6) are in the same straight line, two rotating columns (5) are fixed on the surface of the bending sleeve (3), the two rotating columns (5) are rotatably inserted with the rotating hole (4) and the positioning groove (6) respectively, a shaping plate (7) is fixed on the top surface of the fixing plate (1), a flamethrower (8) is arranged on one side of the shaping plate (7), the nozzle of the flamethrower (8) is inserted through the shaping plate (7), a connecting strip (9) is fixed on the surface of the bending sleeve (3), and a handle (10) is fixed on one side of the connecting strip (9).

2. A chair armrest bending device according to claim 1, characterized in that: The top surface of the fixed plate (1) is provided with a sliding opening (11), a sliding plate (12) is slidably arranged inside the sliding opening (11), a servo motor (13) is fixed to one side of the fixed plate (1), a through hole (14) is provided to one side of the fixed plate (1), an output shaft of the servo motor (13) is rotatably inserted into the through hole (14), a threaded rod (15) is fixed to one end of the output shaft of the servo motor (13), the threaded rod (15) is threadedly connected to the sliding plate (12), and two limit plates (16) are fixed to the top surface of the sliding plate (12).

3. A chair armrest bending device according to claim 2, characterized in that: Limiting strips (18) are fixed on both sides of the sliding plate (12), and limiting grooves (17) are respectively provided on both sides of the interior of the sliding opening (11), and the limiting grooves (17) and the limiting strips (18) are slidably inserted.

4. A chair armrest bending device according to claim 2, characterized in that: A placement groove (19) is provided on one side of the limiting plate (16), and an interception plate (20) is slidably inserted inside the placement groove (19).

5. The chair armrest bending device according to claim 2, characterized in that: Two extrusion plates (21) are slidably arranged between the two limit plates (16); a fixing ring (25) is fixed on one side of the extrusion plate (21); a bearing is fixed inside the fixing ring (25); an inner wall surface of an inner ring of the bearing is fixed to a surface of a push rod (22); the push rod (22) is threadedly connected to the limit plate (16); two stabilizing rods (23) are fixed on one side of the extrusion plate (21); the stabilizing rods (23) are slidably plugged into the limit plate (16); and a plurality of anti-slip strips (24) are fixed between the two sides of the two extrusion plates (21) that are close to each other.

6. The chair armrest bending device according to claim 1, characterized in that: Support columns (26) are fixed at the four corners of the bottom surface of the fixed plate (1), and anti-slip pads (27) are fixed at the bottom ends of the support columns (26).

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