Pipe bending equipment for building construction

Abstract

The utility model discloses pipe bending equipment for building construction, and relates to the technical field of building pipe processing, the pipe bending equipment for building construction comprises a rack, a first rotary table, pressing dies, a second rotary table and a supporting die, the first rotary table is rotatably connected to the upper side of the rack, the two sides of the first rotary table are rotatably connected with the pressing dies respectively, the two pressing dies are in a round pipe shape and a square pipe shape respectively, and the supporting die is connected with the second rotary table. The second rotary table is rotationally connected to the upper side of the rack, the two sides of the second rotary table are each rotationally connected with a pair of supporting molds, and the two pairs of supporting molds are in a circular tube shape and a square tube shape. When switching machining is carried out, only the first rotary table and the second rotary table need to be rotated, the standby die set is rotated to a working position, old dies do not need to be disassembled, new dies do not need to be hoisted, the rapid switching effect is achieved, the problem of long-time machine halt caused by die replacement is fundamentally solved, labor intensity is remarkably reduced, the operation process is simplified, and the production efficiency is improved. And the effective operation rate of the equipment and the construction flexibility are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of building pipe processing technology, and in particular to a pipe bending device for building construction. Background Technology

[0002] Precise bending of pipes is a crucial pre-processing step in building construction, directly affecting the assembly efficiency, structural safety, and aesthetics of the piping system. Currently, construction sites generally rely on traditional pipe bending equipment for this work.

[0003] This type of equipment typically uses the principle of pressure bending or roll bending. Its core working component is a set of interoperable molds. In order to achieve qualified bending and prevent distortion of the pipe cross-section, the grooves of these molds must be precisely matched with the shape of the pipe cross-section. Round pipes require the use of arc-shaped molds, while square or rectangular pipes require the use of rectangular groove molds.

[0004] However, existing equipment has significant shortcomings when facing diverse construction needs. When it is necessary to switch between processing round and square tubes, the machine must be stopped and the entire set of molds must be disassembled, replaced, and reinstalled manually. This process is cumbersome, time-consuming, and labor-intensive, and highly dependent on the technical experience of the operators. This results in prominent problems such as long equipment downtime and low overall efficiency, making it difficult to meet the requirements of flexibility and response speed in modern construction. Utility Model Content

[0005] This invention addresses the aforementioned problems by providing a pipe bending device for building construction, which enables rapid switching, fundamentally eliminating the problem of long downtime caused by mold changes, significantly reducing labor intensity, simplifying the operation process, and effectively improving the equipment's effective operating rate and construction flexibility.

[0006] The technical solution adopted to solve the above technical problems is: a pipe bending device for building construction, including a frame, a first turntable, a pressing die, a second turntable and a support die. The first turntable is rotatably connected to the upper side of the frame. The two pressing dies are rotatably connected to both sides of the first turntable. The two pressing dies are respectively round pipe type and square pipe type. The second turntable is rotatably connected to the upper side of the frame. The two support dies are rotatably connected to both sides of the second turntable. The two pairs of support dies are respectively round pipe type and square pipe type.

[0007] Furthermore, it also includes a main motor, a main shaft, a one-way bearing, a first gear, and a second gear. The main motor is connected inside the frame, the main shaft is rotatably connected to the frame, the main shaft is connected to the output end of the main motor, the one-way bearing is sleeved on the main shaft, the one-way bearing connects the main shaft to the first turntable, the first gear is fixedly connected to the end of the main shaft, and the second gear is fixedly connected to the pressure mold in a one-to-one correspondence. The two second gears respectively mesh on both sides of the first gear.

[0008] Furthermore, it also includes a slide groove, a sliding table, a first electric cylinder, a secondary shaft, a second electric cylinder, a spline sleeve, and two spline shafts. The slide groove is formed on the upper side of the frame, the sliding table is slidably connected in the slide groove, the first electric cylinder is connected in the frame, and the output end of the first electric cylinder is fixedly connected to the sliding table. The upper end of the secondary shaft is fixedly connected to the second turntable, and the secondary shaft movably passes through the sliding table. The second electric cylinder is connected to the lower side of the sliding table, and the output end of the second electric cylinder is rotatably connected to the lower end of the secondary shaft. The spline sleeve is fixedly connected to the mold support one-to-one. Spline shafts are rotatably connected to both sides of the sliding table, and the spline shafts cooperate with the spline sleeves. The second electric cylinder drives the second turntable to move up and down, realizing the engagement and disengagement of the spline sleeves and the corresponding spline shafts.

[0009] Furthermore, it also includes an auxiliary motor, a gear belt assembly, a third gear, and a rotary electric cylinder. The auxiliary motor is connected to the lower side of the sliding table. The gear belt assembly links the output end of the auxiliary motor with the two splined shafts. The third gear is sleeved on the lower end of the auxiliary shaft and slides in spline engagement with the auxiliary shaft. The third gear is rotatably connected to the lower side of the sliding table through a connector. The rotary electric cylinder is connected to the lower side of the sliding table, and the output shaft of the rotary electric cylinder is linked with the third gear.

[0010] Furthermore, it also includes positioning rods and positioning holes. Multiple positioning rods are connected to the lower side of the second turntable. The lower end of the positioning rod is tapered. Multiple positioning holes are provided on the sliding table. The positioning holes correspond one-to-one with the positioning rods. The edges of the positioning holes are chamfered.

[0011] Furthermore, it also includes a push-pull electromagnet, a locking block, and a locking groove. The push-pull electromagnet is connected to the upper side of the frame, the locking block is fixedly connected to the output end of the push-pull electromagnet, and locking grooves are provided on both sides of the first turntable. The locking block cooperates with the locking groove.

[0012] The beneficial effects of this utility model are as follows: This utility model integrates two types of pressing molds, round tube type and square tube type, by setting a first turntable and integrating two pairs of corresponding mold supports. When switching processing, only the first turntable and the second turntable need to be rotated to rotate the spare mold group to the working position. There is no need to disassemble the old mold and hoist the new mold, which realizes the effect of rapid switching. It fundamentally eliminates the problem of long downtime caused by mold changing, significantly reduces labor intensity, simplifies the operation process, and effectively improves the effective operation rate of the equipment and the flexibility of construction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the first turntable structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the position of the one-way bearing of this utility model.

[0016] Figure 4 This is a schematic diagram of the second turntable structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the position of the secondary shaft of this utility model.

[0018] Figure 6 This is a schematic diagram showing the position of the positioning rod of this utility model.

[0019] Figure 7 This is a schematic diagram of the spline shaft structure of this utility model.

[0020] Figure 8 This is a schematic diagram of the sliding table structure of this utility model.

[0021] Reference numerals in the attached drawings: 1. Frame; 2. First turntable; 3. Press mold; 4. Second turntable; 5. Mold support; 6. Main motor; 7. Main shaft; 8. One-way bearing; 9. First gear; 10. Second gear; 11. Slide groove; 12. Sliding table; 13. First electric cylinder; 14. Sub-shaft; 15. Second electric cylinder; 16. Spline sleeve; 17. Spline shaft; 18. Auxiliary motor; 19. Gear belt assembly; 20. Third gear; 21. Rotary electric cylinder; 22. Positioning rod; 23. Positioning hole; 24. Push-pull electromagnet; 25. Locking block; 26. Locking groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] like Figures 1-8 As shown in the figure, the pipe bending equipment for building construction provided in this embodiment includes a frame 1, a first turntable 2, a pressing die 3, a second turntable 4, and a support die 5. The first turntable 2 is rotatably connected to the upper side of the frame 1. The pressing dies 3 are rotatably connected to both sides of the first turntable 2, and the two pressing dies 3 are respectively round pipe type and square pipe type. The second turntable 4 is rotatably connected to the upper side of the frame 1. A pair of support dies 5 are rotatably connected to both sides of the second turntable 4, and the two pairs of support dies 5 are respectively round pipe type and square pipe type.

[0024] In the above embodiments, both the pressing mold 3 and the supporting mold 5 can adopt existing technologies. The pressing mold 3 and supporting mold 5 suitable for bending square tubes have rectangular grooves, and the pressing mold 3 and supporting mold 5 suitable for bending round tubes have arc-shaped grooves. The first turntable 2 integrates the two types of pressing molds 3 for round tubes and square tubes, and the second turntable 4 integrates the corresponding two pairs of supporting molds 5. When switching processing, only the first turntable 2 and the second turntable 4 need to be rotated to rotate the spare mold group to the working position. There is no need to disassemble the old mold or hoist the new mold, which realizes the effect of rapid switching. This fundamentally eliminates the problem of long downtime caused by mold changing, significantly reduces labor intensity, simplifies the operation process, and effectively improves the effective operation rate of the equipment and the flexibility of construction.

[0025] Specifically, it also includes a main motor 6, a main shaft 7, a one-way bearing 8, a first gear 9, and a second gear 10. The main motor 6 is connected inside the frame 1, the main shaft 7 is rotatably connected to the frame 1, the main shaft 7 is connected to the output end of the main motor 6, the one-way bearing 8 is sleeved on the main shaft 7, the one-way bearing 8 connects the main shaft 7 to the first turntable 2, the first gear 9 is fixedly connected to the end of the main shaft 7, and the second gear 10 is fixedly connected to the pressure mold 3 in a one-to-one correspondence. The two second gears 10 are respectively meshed on both sides of the first gear 9.

[0026] In the above embodiments, the power path is divided into two paths through the key component of the one-way bearing 8: When rotating in the forward direction, the power directly drives the mold 3 to rotate for bending operations through the main shaft 7, the first gear 9, and the second gear 10, and the first turntable 2 will not rotate at this time; when rotating in the reverse direction, the power drives the entire first turntable 2 to rotate 180 degrees through the one-way bearing 8 to achieve the switching of the mold 3. This design realizes the driving of two completely different actions (rotation processing and mold 3 switching) by a single motor, which simplifies the mechanical structure and control system, reduces costs and equipment failure points, and improves the reliability of the equipment.

[0027] Specifically, it also includes a slide groove 11, a sliding table 12, a first electric cylinder 13, a secondary shaft 14, a second electric cylinder 15, a spline sleeve 16, and two spline shafts 17. The slide groove 11 is opened on the upper side of the frame 1. The sliding table 12 is slidably connected in the slide groove 11. The first electric cylinder 13 is connected in the frame 1, and the output end of the first electric cylinder 13 is fixedly connected to the sliding table 12. The upper end of the secondary shaft 14 is fixedly connected to the second turntable 4, and the secondary shaft 14 moves through the sliding table 12. The second electric cylinder 15 is connected to the lower side of the sliding table 12, and the output end of the second electric cylinder 15 is rotatably connected to the lower end of the secondary shaft 14. The spline sleeve 16 is fixedly connected to the mold 5 one by one. The two sides of the sliding table 12 are rotatably connected to the spline shafts 17, and the spline shafts 17 cooperate with the spline sleeves 16. The second electric cylinder 15 drives the second turntable 4 to move up and down, so as to realize the engagement and separation of the spline sleeves 16 and the corresponding spline shafts 17.

[0028] It also includes an auxiliary motor 18, a gear belt assembly 19, a third gear 20, and a rotary electric cylinder 21. The auxiliary motor 18 is connected to the lower side of the sliding table 12. The gear belt assembly 19 links the output end of the auxiliary motor 18 with two splined shafts 17. The third gear 20 is sleeved on the lower end of the secondary shaft 14. The third gear 20 slides with the secondary shaft 14 in spline engagement. The third gear 20 is rotatably connected to the lower side of the sliding table 12 through a connector. The rotary electric cylinder 21 is connected to the lower side of the sliding table 12. The output shaft of the rotary electric cylinder 21 is linked with the third gear 20.

[0029] In the above embodiments, the first electric cylinder 13 drives the entire sliding table 12 to move back and forth, which not only realizes the processing feed operation, but also makes room for the rotation of the second turntable 4. The second electric cylinder 15 drives the second turntable 4 to rise and fall, so as to separate or engage the spline sleeve 16 with the spline shaft 17 on the sliding table 12. The rising and falling separation realizes the separation of the mold support 5 group from the lower drive mechanism, so that it can rotate freely. After the lowering and engaging, the power of the auxiliary motor 18 can be seamlessly transmitted to the mold support 5 through the gear belt group 19, spline shaft 17, and spline sleeve 16, driving it to rotate and cooperate with the pressure mold 3 to complete the bending, realizing the "interruption and reconnection" of the power transmission chain. The rotating electric cylinder 21 drives the third gear 20 to rotate. After the secondary shaft 14 moves up, it drives the secondary shaft 14 to rotate, thereby realizing the replacement operation of the mold support 5. The spline cooperation between the third gear 20 and the secondary shaft 14 can not only drive the secondary shaft 14 to rotate, but also does not affect the vertical sliding operation of the secondary shaft 14.

[0030] Specifically, it also includes positioning rods 22 and positioning holes 23. Multiple positioning rods 22 are connected to the lower side of the second turntable 4. The lower end of the positioning rod 22 is tapered. Multiple positioning holes 23 are opened on the sliding table 12. The positioning holes 23 correspond one-to-one with the positioning rods 22. The edges of the positioning holes 23 are chamfered.

[0031] In the above embodiments, the positioning rod 22 and positioning hole 23 facilitate stable docking operation when the second turntable 4 moves down again. During the descent of the second turntable 4, the conical surface can automatically guide and correct deviation, achieve precise alignment, and ensure smooth spline engagement and mold center alignment.

[0032] Specifically, it also includes a push-pull electromagnet 24, a locking block 25 and a locking groove 26. The push-pull electromagnet 24 is connected to the upper side of the frame 1, the locking block 25 is fixedly connected to the output end of the push-pull electromagnet 24, and the locking groove 26 is provided on both sides of the first turntable 2. The locking block 25 and the locking groove 26 cooperate with each other.

[0033] In the above embodiments, the locking block 25 is driven forward by the operation of the push-pull electromagnet 24, and the locking block 25 is inserted into the locking groove 26, thereby realizing the stable locking operation of the first turntable 2. The structure is simple and reliable.

[0034] The working principle of this utility model is as follows:

[0035] Die 3 switching: Select and switch the appropriate die set according to the pipe to be processed (square or round pipe). First, start the push-pull electromagnet 24, retract the locking block 25, and release the fixation of the first turntable 2. Then start the main motor 6 to rotate in the opposite direction. The power is directly transmitted through the main shaft 7 and the one-way bearing 8, driving the first turntable 2 to rotate 180 degrees. The appropriate die 3 is rotated to the working position. After rotating to the position, the push-pull electromagnet 24 is activated, and the locking block 25 extends and inserts into the locking groove 26 on the corresponding side of the first turntable 2, completing the switching and rigid locking of the die 3.

[0036] Mold 5 switching: The first electric cylinder 13 is activated, pulling the sliding table 12 and the entire second turntable 4 mechanism backward to leave a safe space for the rotation of the second turntable 4. The second electric cylinder 15 is activated, lifting the sub-shaft 14 and the second turntable 4 upward, so that the spline sleeve 16 connecting the mold 5 is disengaged from the spline shaft 17. At the same time, the positioning rod 22 is pulled out from the positioning hole 23. The rotary electric cylinder 21 is activated, driving the sub-shaft 14 and the second turntable 4 to rotate 180 degrees through the third gear 20, rotating the appropriate mold 5 assembly to the working position. The auxiliary motor 18 drives the two spline shafts 17 to slowly idle through the gear belt assembly 19 (the purpose is to ensure that the spline sleeve 16 and the spline shaft 17 can be smoothly and quickly engaged). Subsequently, the second electric cylinder 15 drives the second turntable 4 to move downward. Under the guidance of the conical positioning rod 22, the second turntable 4 is precisely aligned, so that the spline sleeve 16 can smoothly re-engage with the slowly rotating spline shaft 17 in dynamic motion (an involute spline is used to ensure smooth engagement).

[0037] Bending process: After all mold switching, positioning and locking actions are completed, the equipment enters the processing operation. The pipe is placed on the already positioned support mold 5. The first electric cylinder 13 pushes the sliding table 12 forward, so that the pipe on the support mold 5 reaches the position of the pressure mold 3. The forward movement of the first electric cylinder 13 provides pressure for bending the pipe. The main motor 6 rotates continuously in the forward direction. The support mold 5 and the pressure mold 3 work together to apply pressure. At the same time, the auxiliary motor 18 works. The two work together to complete the bending operation of the pipe.

[0038] It should be noted that the dynamic separation and engagement of the spline sleeve 16 and the spline shaft 17 is a mature existing technology and will not be described in detail here.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A pipe bending device for building construction, comprising a frame (1), characterized in that, Also includes: The first turntable (2) is rotatably connected to the upper side of the frame (1); The first turntable (2) has two rotatably connected molds (3) on its two sides, and the two molds (3) are respectively round tube type and square tube type; The second turntable (4) is rotatably connected to the upper side of the frame (1); The mold (5) is rotatably connected to both sides of the second turntable (4), and the two pairs of molds (5) are respectively round tube type and square tube type.

2. The pipe bending apparatus for building construction according to claim 1, wherein Also includes: The main motor (6) is connected inside the frame (1); The main shaft (7) is rotatably connected to the frame (1), and the main shaft (7) is connected to the output end of the main motor (6); A one-way bearing (8) is sleeved on the main shaft (7), and the one-way bearing (8) connects the main shaft (7) to the first turntable (2); The first gear (9) is fixedly connected to the end of the main shaft (7); The second gear (10) is fixedly connected to the mold (3) in a one-to-one correspondence, and the two second gears (10) are respectively meshed on both sides of the first gear (9).

3. The pipe bending apparatus for construction work according to claim 1, characterized by Also includes: A slide (11) is provided on the upper side of the frame (1); The sliding table (12) is slidably connected to the sliding groove (11); The first electric cylinder (13) is connected inside the frame (1), and the output end of the first electric cylinder (13) is fixedly connected to the sliding table (12); The upper end of the secondary shaft (14) is fixedly connected to the second turntable (4), and the secondary shaft (14) moves through the sliding table (12). The second electric cylinder (15) is connected to the lower side of the sliding table (12), and the output end of the second electric cylinder (15) is rotatably connected to the lower end of the sub-shaft (14); The spline sleeve (16) is fixedly connected to the mold (5) in a one-to-one correspondence; Two splined shafts (17) are rotatably connected to both sides of the sliding table (12), and the splined shafts (17) cooperate with the splined sleeve (16); The second electric cylinder (15) drives the second turntable (4) to move up and down, thereby realizing the engagement and separation of the spline sleeve (16) and the corresponding spline shaft (17).

4. The pipe bending apparatus for building construction according to claim 3, wherein Also includes: A secondary motor (18) is connected to the lower side of the sliding table (12); The gear belt assembly (19) links the output end of the auxiliary motor (18) with the two splined shafts (17); The third gear (20) is sleeved on the lower end of the secondary shaft (14). The third gear (20) slides in spline engagement with the secondary shaft (14). The third gear (20) is rotatably connected to the lower side of the sliding table (12) through a connecting piece. A rotary electric cylinder (21) is connected to the lower side of the sliding table (12), and the output shaft of the rotary electric cylinder (21) is linked with the third gear (20).

5. The pipe bending apparatus for construction work according to claim 3, characterized by Also includes: Positioning rod (22), multiple positioning rods (22) are connected to the lower side of the second turntable (4), and the lower end of the positioning rod (22) is provided with a conical surface; Positioning holes (23): Multiple positioning holes (23) are provided on the sliding table (12). The positioning holes (23) correspond one-to-one with the positioning rods (22). The edges of the positioning holes (23) are chamfered.

6. The pipe bending apparatus for construction work according to claim 1, characterized by Also includes: A push-pull electromagnet (24) is connected to the upper side of the frame (1); The locking block (25) is fixedly connected to the output end of the push-pull electromagnet (24); Lock slots (26) are provided on both sides of the first turntable (2), and the lock block (25) cooperates with the lock slots (26).

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