Electric heating tube six-edge folding equipment
By designing a hexagonal folding device for enamel electric heating tubes, using the technology of double-head automatic bending pipe forming and gearbox driving rotary sleeves, the high cost and low efficiency problems caused by manual bending in the prior art are solved, and the problem of high cost and low efficiency is achieved. Efficient and accurate automatic molding.
Patent Information
- Application Number
- CN202421257728.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-04
AI Technical Summary
In the prior art, the hexagonal bending of the enamel electric heating pipe mainly relies on manual bending of customized tooling, resulting in high labor intensity, large demand for workplaces, and increased manufacturing costs, which are inconvenient for management.
A hexagonal folding equipment for electric heating pipes is designed, and the double-head automatic bending is used to achieve double-head synchronous automatic bending and forming through the gearbox drive rotary sleeve, and the bend angle is adjusted through the cylinder stroke, instead of manual replacement of the mold core and positioning.
It realizes efficient and accurate automatic forming of electric heating pipes, improves processing efficiency and accuracy, reduces production costs, and improves the versatility of equipment.
Smart Images
Figure CN222491853U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric heating tube processing, in particular to a device for folding the six sides of an electric heating tube. Background Art
[0002] Household, commercial and industrial electric heating tubes generally use metal outer tubes, and the heating wires are spirally distributed along the central axis of the tube, and are led out with metal rods as the connecting medium. The gap between the outer tube and the heating wire is filled with compacted magnesium oxide powder with good insulation and thermal conductivity. The two ends of the tube are sealed with resin, silicone and other materials, and the flanges are brazed or riveted for customer installation. The enamel electric heating tube is installed in a closed container of moderate size, and the electric heating tube requires a relatively long distance due to the power size. Therefore, the straight tube needs to be bent several times before it can be installed in the closed container of the water heater. At present, the 6-side bending of the enamel electric heating tube is mostly produced by manual bending with customized tooling. The labor intensity of employees is high, the demand for tooling is large, the manufacturing cost increases, and it is not easy to manage.
[0003] In this case, the company needs to develop an advanced automatic molding equipment to replace the existing manual operation, improve production efficiency, reduce personnel requirements, and reduce production costs. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a six-sided folding device for electric heating tubes, which replaces manual forming or semi-automatic forming (bending first and then folding) with double-head automatic tube bending, and at the same time controls the cylinder stroke to adjust the bending angle instead of manually changing the mold core and positioning.
[0005] The purpose of the utility model is to achieve the following technical solution: This electric heating pipe hexagonal folding device is used to bend the electric heating pipe, and the electric heating pipe is continuously bent by a straight pipe to form a first bend, a second bend, an intermediate bend, a third bend and a fourth bend, and the device includes:
[0006] The equipment platform has a support plate on both sides, and a sliding plate is relatively slidably arranged on each support plate, and the sliding plate is driven by a propulsion device;
[0007] A positioning bracket is arranged between two support plates and is used to place and position the electric heating tube;
[0008] A first gear box is arranged on a sliding plate, and an output end of the first gear box is connected to a first bending assembly, for driving a first bending portion and a fourth bending portion located outside the electric heating tube to bend relative to a positioning plane of the electric heating tube;
[0009] A second gear box is disposed on another sliding plate, and an output end of the second gear box is connected to a second bending assembly for driving the second bending portion and the third bending portion located inside the electric heating tube to bend relative to the positioning plane of the electric heating tube; and
[0010] The driving device is used to drive the first gear box and the second gear box.
[0011] As a further technical solution, the propulsion device includes a propulsion cylinder fixed on the support plate, and linear guide rails are arranged on both sides of the support plate, so that the sliding plate is slidably installed on the linear guide rails.
[0012] As a further technical solution, a dust cover is fixed on the side of the sliding plate away from the positioning bracket, and the dust cover is shielded on the supporting plate.
[0013] As a further technical solution, the first bending assembly includes a first rotating sleeve and a fourth rotating sleeve. Two gear shafts are arranged at the output end of the first gear box, one of which is connected to drive the first rotating sleeve. A slot is provided at the other end of the first rotating sleeve for inserting the first bending portion. The other gear shaft is connected to drive the fourth rotating sleeve. A slot is also provided at the other end of the fourth rotating sleeve for inserting the fourth bending portion.
[0014] As a further technical solution, the second bending assembly includes a second rotating sleeve and a third rotating sleeve. Two gear shafts are arranged at the output end of the second gear box, one of which is connected to drive the second rotating sleeve. A slot is provided at the other end of the second rotating sleeve for inserting the second bending portion. The other gear shaft is connected to drive the third rotating sleeve. A slot is also provided at the other end of the third rotating sleeve for inserting the third bending portion.
[0015] As a further technical solution, the driving device includes a rack driving cylinder fixed on the sliding plate below the first gear box and the second gear box. A rack is arranged in each of the first gear box and the second gear box. One end of the rack is driven by the corresponding rack driving cylinder, and the other end of the rack is meshed with a driving gear for transmission. The driving gear is sleeved on a gear shaft of the first gear box or the second gear box, and the driving gear is meshed with a driven gear for transmission. The driven gear is sleeved on another gear shaft of the first gear box or the second gear box.
[0016] As a further technical solution, an avoidance groove is provided on the support plate at a position corresponding to the rack drive cylinder, and when the sliding plate slides relative to the support plate, the rack drive cylinder slides along the avoidance groove.
[0017] As a further technical solution, a positioning plate is arranged on the top of the positioning bracket, and a positioning groove is provided on the positioning plate. After the electric heating pipe is inserted into the positioning groove, the middle bending part is pressed by a pressing plate.
[0018] As a further technical solution, a box-type linear bearing is arranged along the length direction of the equipment platform, and the positioning bracket is slidably arranged on the box-type linear bearing, and is locked and fixed relative to the box-type linear bearing by the bracket locking block; the support plate is also slidably arranged on the box-type linear bearing, and is locked and fixed relative to the box-type linear bearing by the support plate locking block.
[0019] The beneficial effects of the utility model are:
[0020] 1. Two gear boxes are used to drive the rotating sleeve to achieve double-head synchronous automatic bending and forming. The formed tube can be accurately matched with the mold, and the automatic process replaces the manual / semi-automatic process to improve processing efficiency and accuracy.
[0021] 2. After forming, the rotating sleeve will automatically withdraw without pressing the pipe, thus ensuring the shape after forming;
[0022] 3. A box-type linear bearing is set on the equipment platform to facilitate the adjustment of the distance between the two gear boxes according to the different lengths of the pipes, and at the same time adjust the fixed position of the positioning bracket, which has better versatility and reduces cost investment. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 (Hide side panels).
[0024] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 (Hide side panels).
[0025] Figure 3 for Figure 2 A partial enlarged schematic diagram of area A in the middle.
[0026] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 3 (Hide dust cover).
[0027] Figure 5 It is a schematic diagram of the structure of the first and second gear boxes in the utility model.
[0028] Figure 6 It is a schematic diagram of the connection structure between the gear shaft and the rotating sleeve in the utility model.
[0029] Figure 7 The schematic diagram of the structure of the electric heating tube pressed on the positioning plate in the utility model Figure 1 .
[0030] Figure 8 The schematic diagram of the structure of the electric heating tube pressed on the positioning plate in the utility model Figure 2 (Hide the swivel sleeve).
[0031] Fig. 9 The schematic diagram of the structure of the electric heating tube pressed on the positioning plate in the utility model Figure 3 (Hide the pressure plate).
[0032] Fig.10 It is a schematic diagram of the three-dimensional structure of the electric heating tube in the utility model before processing.
[0033] Fig.11 It is a schematic diagram of the three-dimensional structure of the electric heating tube after one-time molding in the utility model.
[0034] Fig.12 It is a schematic diagram of the three-dimensional structure of the electric heating tube after secondary molding in the utility model.
[0035] Fig.13 It is a schematic diagram of the main structure of the electric heating tube after secondary molding in the utility model.
[0036] Explanation of the accompanying drawings: equipment platform 1, electric heating tube 2, first bend 3, second bend 4, middle bend 5, third bend 6, fourth bend 7, first gear box 8, second gear box 9, rack 10, driving gear 11, driven gear 12, gear shaft 13, first rotating sleeve 14, second rotating sleeve 15, third rotating sleeve 16, fourth rotating sleeve 17, thrust cylinder 18, rack drive cylinder 19, linear guide 20, support plate 21, sliding plate 22, avoidance groove 23, positioning bracket 24, positioning plate 25, pressure plate 26, positioning groove 27, box-type linear bearing 28, support plate locking block 29, bracket locking block 30, slot 31, dust cover 32, push plate 33. DETAILED DESCRIPTION
[0037] The utility model will be described in detail below with reference to the accompanying drawings:
[0038] Example: As attached Figures 1 to 13 As shown, the hexagonal folding device of the electric heating pipe includes an equipment platform 1, an electric heating pipe 2, a first bending part 3, a second bending part 4, an intermediate bending part 5, a third bending part 6, a fourth bending part 7, a first gear box 8, a second gear box 9, a rack 10, a driving gear 11, a driven gear 12, a gear shaft 13, a first rotating sleeve 14, a second rotating sleeve 15, a third rotating sleeve 16, a fourth rotating sleeve 17, a propulsion cylinder 18, a rack drive cylinder 19, a linear guide rail 20, a support plate 21, a sliding plate 22, an avoidance groove 23, a positioning bracket 24, a positioning plate 25, a pressure plate 26, a positioning groove 27, a box-type linear bearing 28, a support plate locking block 29, a bracket locking block 30, a slot 31, a dust cover 32 and a push plate 33.
[0039] Reference Fig.10Before processing, the electric heating tube 2 is continuously bent from a straight tube in the previous process to form a first bend 3, a second bend 4, an intermediate bend 5, a third bend 6 and a fourth bend 7, wherein the first bend 3, the intermediate bend 5 and the fourth bend 7 face the same side, while the second bend 4 and the third bend 6 face the other side.
[0040] like Figure 1 , 2 As shown in 3, box-type linear bearings 28 (two sets in total, respectively arranged on the left and right sides of the equipment platform 1) are arranged on the equipment platform 1 along the length direction, and a support plate 21 is slidably arranged at each of the front and rear ends of the box-type linear bearings 28, so as to facilitate adjustment of the distance between the two support plates 21 according to the length of the electric heating tube 2. After the adjustment is completed, the support plates 21 are locked and fixed relative to the box-type linear bearings 28 by the support plate locking blocks 29, that is, when the processing starts, the support plates 21 are fixed relative to the equipment platform 1 and cannot slide. A positioning bracket 24 is arranged between the two support plates 21, and the positioning bracket 24 is also slidably arranged on the box-type linear bearings 28, so as to facilitate sliding adjustment. Similarly, after the adjustment is completed, the positioning bracket 24 is locked and fixed relative to the box-type linear bearings 28 by the bracket locking blocks 30. Further, as Figure 7 , 8 As shown in , 9 , a positioning plate 25 is installed on the top of the positioning bracket 24 , and a positioning groove 27 is provided on the positioning plate 25 . After the electric heating tube 2 is inserted into the positioning groove 27 , the middle bending portion 5 is pressed by the pressing plate 26 , so that the electric heating tube 2 is placed and positioned on the positioning plate 25 .
[0041] Reference Figure 4 , a propulsion cylinder 18 is fixed on each support plate 21, a push plate 33 is installed on the piston rod of the propulsion cylinder 18, and the push plate 33 is fixedly connected to the sliding plate 22. At the same time, a linear guide rail 20 is set on both sides of the support plate 21, so that the sliding plate 22 is slidably installed on the linear guide rail 20 through the slider. When the propulsion cylinder 18 is extended or retracted, it drives the sliding plate 22 to slide along the linear guide rail 20. Figure 5As shown, the first gearbox 8 is arranged on a sliding plate 22, and the second gearbox 9 is arranged on another sliding plate 22, and the first gearbox 8 and the second gearbox 9 adopt the same structure, both of which include a rack 10, a driving gear 11, a driven gear 12 and two gear shafts 13. Among them, the lower end of the rack 10 (without tooth surface) is driven by the corresponding rack drive cylinder 19, and the upper end of the rack 10 (with tooth surface) is meshed with the driving gear 11 for transmission, and the driving gear 11 is sleeved on a gear shaft 13 of the first gearbox 8 or the second gearbox 9, and the driving gear 11 is meshed with the driven gear 12 for transmission, and the driven gear 12 is sleeved on another gear shaft 13 of the first gearbox 8 or the second gearbox 9, and the gear shaft 13 is supported on the corresponding gearbox through a bearing. When the rack drive cylinder 19 moves in telescopic motion, it drives the rack 10 to move up and down, thereby driving the driving gear 11, the driven gear 12 and the gear shaft 13 to rotate. Preferably, an avoidance groove 23 is provided on the support plate 21 at a position corresponding to the rack drive cylinder 19 , and when the sliding plate 22 slides relative to the support plate 21 , the rack drive cylinder 19 can slide along the avoidance groove 23 .
[0042] like Figure 4 , 6 7, the other end of the gear shaft 13 is used as an output end for connecting the rotating sleeve. Among them, one gear shaft 13 of the first gear box 8 is connected to drive the first rotating sleeve 14, and the other end of the first rotating sleeve 14 is provided with a slot 31 for inserting the first curved portion 3. Another gear shaft 13 of the first gear box 8 is connected to drive the fourth rotating sleeve 17, and the other end of the fourth rotating sleeve 17 is also provided with a slot 31 for inserting the fourth curved portion 7. When the first gear box 8 is working, it drives the first curved portion 3 and the fourth curved portion 7 located outside the electric heating tube 2 to bend relative to the positioning plane of the electric heating tube 2, and performs one-time forming. The bending angle is 60°. The effect after one-time forming is as follows. Fig.11 As shown. A gear shaft 13 of the second gear box 9 is connected to drive the second rotating sleeve 15. The other end of the second rotating sleeve 15 has a slot 31 for inserting the second curved portion 4. Another gear shaft 13 of the second gear box 9 is connected to drive the third rotating sleeve 16. The other end of the third rotating sleeve 16 also has a slot 31 for inserting the third curved portion 6. When the second gear box 9 is working, the second curved portion 4 and the third curved portion 6 located on the inner side of the electric heating tube 2 are driven to bend relative to the positioning plane of the electric heating tube 2, and then secondary molding is performed. The bending angle is also 60°. The effect after secondary molding is as shown Fig.12 , 13 shown.
[0043] Preferably, if Figure 1 , 2 As shown, a dust cover 32 is fixed on the side of the sliding plate 22 away from the positioning bracket 24 , and the dust cover 32 blocks the support plate 21 to prevent dust from entering.
[0044] The working process of this utility model:
[0045] Before bending and forming, first adjust the distance between the two support plates 21 according to the length of the electric heating tube 2, and adjust the fixed position of the positioning bracket 24 on the box-type linear bearing 28. After the adjustment is completed, the positioning bracket 24 is locked and fixed relative to the box-type linear bearing 28 through the bracket locking block 30, and the support plate 21 is locked and fixed relative to the box-type linear bearing 28 through the support plate locking block 29.
[0046] During bending and forming, the propulsion cylinder 18 corresponding to the first gear box 8 is first started to drive the first gear box 8 to move closer to the electric heating tube 2, so that the first rotating sleeve 14 is inserted into the first bending portion 3, and the fourth rotating sleeve 17 is inserted into the fourth bending portion 7. The propulsion cylinder 18 stops moving, and then the rack driving cylinder 19 is started to drive the gear shaft 13 to rotate, driving the first bending portion 3 and the fourth bending portion 7 located outside the electric heating tube 2 to bend 60° relative to the positioning plane of the electric heating tube 2 for one-time forming.
[0047] After the first molding, the propulsion cylinder 18 corresponding to the first gear box 8 moves in the opposite direction, so that the first rotating sleeve 14 exits the first bend 3 and the fourth rotating sleeve 17 exits the fourth bend 7. Then, the propulsion cylinder 18 corresponding to the second gear box 9 is started to drive the second gear box 9 to move closer to the electric heating tube 2, so that the second rotating sleeve 15 is inserted into the second bend 4, and the third rotating sleeve 16 is inserted into the third bend 6. The propulsion cylinder 18 stops moving, and then the corresponding rack drive cylinder 19 is started to drive the gear shaft 13 to rotate, driving the second bend 4 and the third bend 6 located on the inner side of the electric heating tube 2 to bend relative to the positioning plane of the electric heating tube 2, and then secondary molding is performed, and the bending angle is also 60°. Then the second gear box 9 also exits the electric heating tube 2, and the electric heating tube 2 after secondary molding is as shown in FIG. Fig.12 , 13 When the rotating sleeve is withdrawn, the shape of the electric heating tube 2 must be guaranteed to be the shape after molding, so the molding core cannot return to the origin, but it cannot press the tube, so the whole process needs to be guaranteed to be in a loose state when the rotating sleeve is withdrawn.
[0048] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.
Claims
1. A six-sided folding device for an electric heating pipe, used for bending an electric heating pipe (2), wherein the electric heating pipe (2) is formed by continuously bending a straight pipe to form a first bending portion (3), a second bending portion (4), an intermediate bending portion (5), a third bending portion (6) and a fourth bending portion (7), characterized in that: include: The equipment platform (1) has a support plate (21) disposed on both sides thereof, and a sliding plate (22) is disposed on each support plate (21) so as to slide relatively therewith, and the sliding plate (22) is driven by a propulsion device; A positioning bracket (24), arranged between the two support plates (21), and used for placing and positioning the electric heating tube (2); A first gear box (8) is arranged on a sliding plate (22), and an output end of the first gear box (8) is connected to a first bending assembly for driving a first bending portion (3) and a fourth bending portion (7) located outside the electric heating tube (2) to bend relative to a positioning plane of the electric heating tube (2); A second gear box (9) is arranged on another sliding plate (22), and an output end of the second gear box (9) is connected to a second bending assembly for driving a second bending portion (4) and a third bending portion (6) located inside the electric heating tube (2) to bend relative to a positioning plane of the electric heating tube (2); as well as A driving device is used to drive the first gear box (8) and the second gear box (9).
2. The electric heating tube hexagonal folding device according to claim 1 is characterized in that: The propulsion device comprises a propulsion cylinder (18) fixed on a support plate (21), and linear guide rails (20) are arranged on both sides of the support plate (21), so that a sliding plate (22) is slidably installed on the linear guide rails (20).
3. The electric heating tube hexagonal folding device according to claim 2, characterized in that: A dust cover (32) is fixed on the side of the sliding plate (22) facing away from the positioning bracket (24), and the dust cover (32) covers the support plate (21).
4. The electric heating tube hexagonal folding device according to claim 1, characterized in that: The first bending assembly comprises a first rotating sleeve (14) and a fourth rotating sleeve (17); two gear shafts (13) are arranged at the output end of the first gear box (8); one of the gear shafts (13) is connected to drive the first rotating sleeve (14); a slot (31) is provided at the other end of the first rotating sleeve (14) for inserting the first bending portion (3); the other gear shaft (13) is connected to drive the fourth rotating sleeve (17); a slot (31) is also provided at the other end of the fourth rotating sleeve (17) for inserting the fourth bending portion (7).
5. The electric heating tube hexagonal folding device according to claim 4, characterized in that: The second bending assembly comprises a second rotating sleeve (15) and a third rotating sleeve (16); two gear shafts (13) are arranged at the output end of the second gear box (9); one gear shaft (13) is connected to drive the second rotating sleeve (15); a slot (31) is provided at the other end of the second rotating sleeve (15) for inserting the second bending portion (4); the other gear shaft (13) is connected to drive the third rotating sleeve (16); a slot (31) is also provided at the other end of the third rotating sleeve (16) for inserting the third bending portion (6).
6. The electric heating tube hexagonal folding device according to claim 5, characterized in that: The driving device comprises a rack drive cylinder (19) fixed on a sliding plate (22) below a first gear box (8) and a second gear box (9). A rack (10) is arranged in each of the first gear box (8) and the second gear box (9). One end of the rack (10) is driven by the corresponding rack drive cylinder (19). The other end of the rack (10) meshes with a driving gear (11) for transmission. The driving gear (11) is sleeved on a gear shaft (13) of the first gear box (8) or the second gear box (9). The driving gear (11) meshes with a driven gear (12) for transmission. The driven gear (12) is sleeved on another gear shaft (13) of the first gear box (8) or the second gear box (9).
7. The electric heating tube hexagonal folding device according to claim 6, characterized in that: An avoidance groove (23) is provided on the support plate (21) at a position corresponding to the rack drive cylinder (19); when the sliding plate (22) slides relative to the support plate (21), the rack drive cylinder (19) slides along the avoidance groove (23).
8. The electric heating tube hexagonal folding device according to claim 1, characterized in that: A positioning plate (25) is arranged on the top of the positioning bracket (24), and a positioning groove (27) is provided on the positioning plate (25). After the electric heating pipe (2) is inserted into the positioning groove (27), the middle curved portion (5) is pressed by a pressing plate (26).
9. The electric heating tube hexagonal folding device according to claim 1, characterized in that: A box-type linear bearing (28) is arranged on the equipment platform (1) along the length direction; the positioning bracket (24) is slidably arranged on the box-type linear bearing (28) and is locked and fixed relative to the box-type linear bearing (28) by a bracket locking block (30); the support plate (21) is also slidably arranged on the box-type linear bearing (28) and is locked and fixed relative to the box-type linear bearing (28) by a support plate locking block (29).