A bamboo strip multi-head spiral bending forming device
By integrating heating and shaping with spiral bending within a closed insulation cover, and utilizing a steam generator and transmission structure, the risk of burns during bamboo strip feeding is solved, enabling the bamboo strips to be shaped at the original workstation and the equipment to operate efficiently.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZIXI ZHEQING BAMBOO & WOOD CO LTD
- Filing Date
- 2026-06-24
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing bamboo strip spiral bending forming device, during the feeding process of heated and softened bamboo strips, operators frequently come into contact with the high-temperature bamboo strips and molds, which increases the risk of burn accidents, and the temperature in the forming zone is too high.
A multi-head spiral bending and forming device for bamboo strips is designed, which integrates heating and shaping with spiral bending and forming in the same closed heat-insulating cover. High-temperature steam is provided by a top steam generator for shaping. Combined with a quick-release interlocking transmission structure of cross blocks and connecting columns, the bamboo strips are driven to wind evenly by a dial plate. The bamboo strips are fed by a linear drive that moves the slider. The meshing of gears and racks causes the connecting parts to disengage automatically. An electric push rod drives the bottom plate to rise and fall, and the roller sliding structure is used for unloading.
After the bamboo strips are spirally shaped, they are directly heated and shaped at the original workstation, avoiding springback deformation during the transfer process. Operators do not need to be exposed to high temperatures for a long time. The equipment components are isolated from the high temperature and high humidity environment by heat insulation cotton, which improves the reliability and service life of the equipment.
Smart Images
Figure CN122425774A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bamboo strip bending and forming technology, specifically to a multi-head spiral bending and forming device for bamboo strips. Background Technology
[0002] Spiral-bent bamboo strip components are widely used in the production of bamboo spiral handrails, decorative columns, woven craft frames, garden support components, and other products. The hot bending of bamboo strips mainly utilizes the principle that the lignin in bamboo softens at a suitable temperature, undergoes plastic deformation under external force, and then hardens and solidifies after cooling. Specifically, the bamboo strips are softened as a whole in a heating chamber and then wound around a spiral mold. The compressed bamboo strips are heated and pressed to bend and shape them. After heating, they are cooled and solidified. The cooling and solidification process usually involves removing the bamboo strips after heating and sending them in batches for natural cooling or forced air cooling. After complete cooling and hardening, the finished bamboo strips are removed from the mold.
[0003] In the operation of existing bamboo strip spiral bending forming equipment, the bamboo strips that have just been heated and softened and the metal spiral mold will continue to radiate heat outward during the winding, forming and turnover process. This will cause the temperature of the forming operation area to be too high during the high temperature period in summer. In extreme cases, it may even reach a level that is difficult for the human body to tolerate. During the feeding process of the heated and softened bamboo strips, the operators frequently come into contact with the high temperature bamboo strips and molds, which also greatly increases the risk of burn accidents.
[0004] To address the aforementioned technical deficiencies, a solution is proposed. Summary of the Invention
[0005] This invention provides a multi-head spiral bending and forming device for bamboo strips, which solves the problem that the frequent contact between operators and the high-temperature bamboo strips and molds during the feeding process after the bamboo strips have been heated and softened, which greatly increases the risk of burns.
[0006] To achieve the goal of directly heating and shaping bamboo strips at the original workstation after forming, and eliminating the need for operators to continuously wrap the bamboo strips around the machine for feeding and unloading, this invention achieves this through the following technical solution: A multi-head spiral bending and forming device for bamboo strips, comprising a machine body, wherein a heating and shaping mechanism is provided on the machine body, the heating and shaping mechanism includes a steam generator, a heat insulation cover, and a rotating cover, the heat insulation cover is fixedly connected to the top of the machine body, a shaping space is provided inside the heat insulation cover, the steam generator is fixedly installed on the top of the heat insulation cover, the rotating cover is hinged to the end of the top of the heat insulation cover away from the steam generator, the front end of the shaping space is the feeding end, the rear end of the shaping space is the unloading end, a plurality of feeding mechanisms are provided in the shaping space, and a unloading mechanism is provided at the bottom of the feeding mechanism; A separation mechanism is provided between the feeding mechanism and the machine body. The separation mechanism is used to install and separate the machine body from the feeding mechanism. The separation mechanism includes a rotating shaft driven by two electric push rods driven by the feeding mechanism. There are two electric push rods, which are symmetrically distributed front and back. A cross block is fixedly connected to the end of the rotating shaft away from the electric push rods. A connecting column is fitted and movably connected to the end of the cross block away from the rotating shaft. Several levers are fixedly connected to the outer surface of the connecting column. A spiral cylinder is rotatably connected to the end of the connecting column away from the cross block. Two rings are provided on the inner wall of the spiral cylinder. The ring near the feeding end is fixedly connected to the spiral cylinder, and the ring near the unloading end is slidably connected to the spiral cylinder. The rings are vertically inserted and fixedly connected to sliding rods. A clamping block is fixedly connected to the top of each sliding rod. A clamping drive part is provided inside the clamping block. A drive assembly is detachably provided at the bottom of the sliding rod near the unloading end.
[0007] Furthermore, the steam outlet of the steam generator extends to the top of the shaping space inside the heat preservation cover, and the steam outlets are evenly distributed towards the shaping space. The contact edge between the rotating cover and the heat preservation cover is provided with a high-temperature resistant sealing strip, and the top of the rotating cover is provided with a handle for easy opening. The top of the machine body is fixedly connected to a fixed frame, the top of the fixed base is fixedly connected to a fixed frame, the mounting end of the electric push rod two is fixedly mounted on the fixed frame, the movable end of the electric push rod two is fixedly connected to a mounting plate, the front and rear ends of the top of the machine body are fixedly connected to limit plates, the mounting plate is located between the fixed frame and the limit plate, several rotating shafts two are rotatably connected to the mounting plate, several motors are fixedly mounted on the mounting plate near the feeding end, and the output ends of the several motors are respectively fixedly connected to several rotating shafts two.
[0008] Furthermore, the connecting column near the cross block has a cross-shaped groove that matches the shape of the cross block. The cross block is fitted into the groove to achieve torque transmission. The end of the spiral cylinder near the feeding end is provided with a bearing seat. The connecting column near the feeding end is rotatably connected to the bearing seat through the bearing. The connecting column near the discharging end is fixedly connected to the end of the spiral cylinder near the discharging end.
[0009] Furthermore, the clamping drive unit includes a spring, a pressure block, and a threaded rod, located inside the clamping block near the feeding end. The upper end of the spring is fixedly connected to the inner wall of the top of the clamping block, and the lower end of the spring is fixedly connected to the top of the pressure block. The threaded rod is located inside the clamping block near the unloading end. It vertically penetrates the top of the clamping block and is threadedly connected to the clamping block. The lower end of the threaded rod is rotatably connected to the top of the pressure block.
[0010] Furthermore, the driving assembly includes a slider, a third rotating shaft, a fourth rotating shaft, a second gear, and a connecting member; the slider is slidably connected to the base plate, and a linear drive is connected to the slider transmission to drive it to reciprocate along the bamboo strip feeding direction; the third rotating shaft is vertically fixedly connected to the top of the slider; one end of the fourth rotating shaft is rotatably connected to the third rotating shaft through a bearing; the second gear is sleeved and fixedly connected to the fourth rotating shaft; the connecting member is fixedly connected to the other end of the fourth rotating shaft; a rack second that meshes with the second gear is fixedly installed on the limiting plate near the feeding end through a fixing plate; when the slider moves to the end of the rack second, the second gear drives the fourth rotating shaft to rotate, causing the connecting member to disengage from the movement trajectory of the sliding rod.
[0011] Furthermore, the levers are evenly distributed around the connecting column, and the length of the levers is greater than the radius of the spiral cylinder. A gap is left between the limiting plate near the feeding end and the outer surface of the spiral cylinder for the bamboo strip to pass through. The limiting plate is provided with a strip-shaped through hole for the bamboo strip to pass through at the position of each lever. Abutting blocks are provided on both sides of the strip-shaped through hole. The abutting blocks are fixedly connected to the limiting plate near the feeding end. The pressing block near the unfeeding end has a ramp one at the bottom of the end near the abutting block. The ramp one contacts the ramp two at the end of the abutting block away from the limiting plate. When the clamping block near the unfeeding end contacts the limiting plate near the feeding end, the pressing block is located on top of the abutting block. The fixed base is provided with a feed port for the bamboo strip to pass through at the position of each strip-shaped through hole.
[0012] Furthermore, the feeding mechanism includes an electric push rod, a base plate, a movable plate, a slide rail, and rollers. There are two electric push rods, which are arranged horizontally along the bamboo strip feeding direction. The mounting end of the electric push rod is fixedly connected to the machine body, and the electric push rod near the feeding end and the electric push rod near the discharging end are independently controlled, which can realize the tilting unloading of the base plate. The bottom of the base plate is fixedly connected to the movable end of the electric push rod. The slide rail is fixedly connected to the top of the base plate. Multiple rollers are rotatably connected to the bottom of the movable plate. The rollers are rotatably connected to the slide rail, so that the movable plate can slide along the slide rail. The connecting column near the discharging end is fixedly connected to the movable plate through a connecting plate.
[0013] Furthermore, both ends of the base plate are rotatably connected to a rotating shaft, and a gear and a stop bar are fixedly connected to the rotating shaft. A rack is fixedly connected to the inner side of the machine body at the position corresponding to the gear. When the electric push rod moves the base plate downward, the gear and rack mesh and drive the stop bar to rotate, releasing the limitation on the movable plate.
[0014] Furthermore, the spiral cylinder has axially extending grooves on both its upper and lower sides, and the sliding rod near the feeding end slides within the grooves, allowing the ring to slide along the spiral cylinder axis to accommodate bamboo strips of different lengths.
[0015] Furthermore, a heat insulation cotton is fixedly connected to the bottom of the base plate, covering the entire lower surface of the base plate. This heat insulation cotton is used to isolate the heat of the molding space from being transferred downwards to the electrical components inside the machine body. The heat insulation cotton is an aluminum silicate needle-punched blanket. When the base plate is tilted, the aluminum silicate needle-punched blanket can adapt to the height difference between the movable end of the two electric push rods and the connection end of the heat insulation cotton through local compression and stretching.
[0016] The present invention has the following beneficial effects: This multi-head spiral bending and forming device for bamboo strips integrates spiral bending and forming with steam heating and shaping within a sealed, insulated hood with a rotating cover. Combined with a top-mounted steam generator that evenly delivers high-temperature steam to the shaping space, this design allows for direct heating and shaping of the bamboo strips at their original workstation after spiral forming. This avoids the springback deformation caused by cooling during transfer. The device utilizes a quick-release interlocking transmission structure between the cross block and connecting column, along with circumferentially distributed paddles to drive the bamboo strips to evenly wind around the spiral cylinder. Furthermore, a linear drive moves the slider along the feeding direction to feed the bamboo strips. The linkage design, involving gear two meshing with fixed rack two to automatically disengage the connecting piece from the sliding rod, enables the simultaneous spiral forming of multiple bamboo strips. Furthermore, operators only need to directly hold both ends of the bamboo strips, and the spiral shaping process can be completed without long-term manual intervention. The lifting and lowering of the supporting base plate is driven by an electric push rod. During the descent of the base plate, the gear and the fixed rack mesh to automatically rotate the stop bar to unlock the movable plate. The electric push rod at the rear continues to descend, realizing the linkage operation of tilting and unloading the base plate. With the sliding structure of the rollers and slide rails at the bottom of the movable plate, the molded bamboo strips can be directly and smoothly transferred to the cooling process. At the same time, the heat insulation cotton covering the bottom of the base plate isolates the heat from the shaping space from being transferred downwards. The structural design of arranging all electrical and transmission components outside the heat-insulated space effectively avoids the corrosion of equipment components by the high temperature and high humidity environment, and improves the reliability and service life of the equipment.
[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is another schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the structure of the mounting component of the present invention, on which a rack is fixedly connected. Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the structure of the present invention with mounting components fixedly connected inside the body; Figure 6This is a schematic diagram of the structure of the electric actuator of the present invention, in which a mounting plate is fixedly connected to the movable end; Figure 7 This is a schematic diagram of the contact structure between the contact block and the pressure block of the present invention; Figure 8 This is a schematic diagram of the structure of the base plate of the present invention with thermal insulation cotton fixedly connected to the bottom; Figure 9 for Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic diagram of the structure of the present invention, showing the cross block and the connecting post fitting together and being movably connected. Figure 11 This is a schematic diagram of the structure of the base plate of the present invention, which has a movable plate slidably connected to the top. Figure 12 This is a schematic diagram of the structure of the present invention in which a spiral cylinder is fixedly connected between two connecting columns; Figure 13 for Figure 12 Enlarged schematic diagram of the structure at point C.
[0019] In the diagram: 1. Body; 2. Electric actuator 1; 3. Insulation cover; 4. Rotating cover; 5. Steam generator; 6. Slide rail; 7. Base plate; 8. Movable plate; 9. Rotating shaft 1; 10. Gear 1; 11. Stop bar; 12. Fixing base; 13. Mounting component; 14. Rack 1; 15. Insulation cotton; 16. Fixing frame; 17. Electric actuator 2; 18. Mounting plate; 19. Rotating shaft 2; 20. Cross block; 21. Fixing plate; 22. Gear 23. Limiting plate; 24. Abutting block; 25. Connecting column; 26. Spiral cylinder; 27. Ring; 28. Sliding rod; 29. Clamping block; 30. Slider; 31. Rotating shaft three; 32. Rotating shaft four; 33. Gear two; 34. Connecting piece; 35. Spring; 36. Pressure block; 37. Threaded rod; 38. Feed port; 39. Linear drive; 40. Roller; 41. Connecting plate; 42. Motor; 43. Pulley. Detailed Implementation
[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.
[0021] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.
[0022] Please see Figures 1-13 This invention provides a technical solution: a multi-head spiral bending and forming device for bamboo strips, including a machine body 1, a heating and shaping mechanism on the machine body 1, the heating and shaping mechanism including a steam generator 5, a heat insulation cover 3 and a rotating cover 4, the heat insulation cover 3 being fixedly connected to the top of the machine body 1, a shaping space being provided inside the heat insulation cover 3, the steam generator 5 being fixedly installed on the top of the heat insulation cover 3, the rotating cover 4 being hinged to the top of the heat insulation cover 3 away from the steam generator 5, the front end of the shaping space being the feeding end, the rear end of the shaping space being the unloading end, a plurality of feeding mechanisms being provided inside the shaping space, and an unloading mechanism being provided at the bottom of the feeding mechanism.
[0023] The internal structure and working principle of the steam generator 5 are existing technologies. The steam outlet of the steam generator 5 extends to the top of the shaping space inside the insulation cover 3. The steam outlets are evenly distributed towards the shaping space. The contact edge between the rotating cover 4 and the insulation cover 3 is provided with a high-temperature resistant silicone rubber sealing strip. The top of the rotating cover 4 is provided with a handle for easy opening. A fixed base 12 is fixedly connected to the top of the machine body 1. A fixed frame 16 is fixedly connected to the top of the fixed base 12. The mounting end of the electric push rod 17 is fixedly installed on the fixed frame 16. The movable end of the electric push rod 17 is fixedly connected to the mounting plate 18. Limiting plates 23 are fixedly connected to both the front and rear ends of the top of the machine body 1. The mounting plate 18 is located between the fixed frame 16 and the limiting plate 23. Several rotating shafts 19 are rotatably connected to the mounting plate 18. Several motors 42 are fixedly installed on the mounting plate 18 near the feeding end. The output ends of the motors 42 are fixedly connected to the rotating shafts 19 respectively.
[0024] A separation mechanism is provided between the feeding mechanism and the machine body 1. The separation mechanism is used to install and separate the machine body 1 from the feeding mechanism. The separation mechanism includes a rotating shaft 19 driven by an electric push rod 17 of the feeding mechanism. There are two electric push rods 17, which are symmetrically distributed front and back. A cross block 20 is fixedly connected to the end of the rotating shaft 19 away from the electric push rod 17. A connecting column 25 is fitted and movably connected to the end of the cross block 20 away from the rotating shaft 19. Several levers 43 are fixedly connected to the outer surface of the connecting column 25 near the feeding end. A spiral cylinder 26 is rotatably connected to the end of the connecting column 25 away from the cross block 20.
[0025] The connecting post 25 has a cross-shaped groove that matches the shape of the cross block 20 at one end near the cross block 20. The cross block 20 is fitted into the groove to achieve torque transmission. The screw cylinder 26 has a bearing seat at one end near the feeding end. The connecting post 25 near the feeding end is rotatably connected to the bearing seat through the bearing. The connecting post 25 near the discharging end is fixedly connected to the end of the screw cylinder 26 near the discharging end.
[0026] The inner wall of the spiral cylinder 26 is provided with two rings 27. The ring 27 near the feeding end is fixedly connected to the spiral cylinder 26, and the ring 27 near the unloading end is slidably connected to the spiral cylinder 26. The rings 27 are vertically inserted and fixedly connected with sliding rods 28. The top of each sliding rod 28 is fixedly connected with a clamping block 29. The clamping block 29 is provided with a clamping drive unit. The bottom of the sliding rod 28 near the unloading end is detachably provided with a drive assembly.
[0027] The clamping drive unit includes a spring 35, a pressure block 36, and a threaded rod 37, located inside the clamping block 29 near the feeding end. The upper end of the spring 35 is fixedly connected to the inner wall of the top of the clamping block 29, and the lower end of the spring 35 is fixedly connected to the top of the pressure block 36. The threaded rod 37 vertically penetrates the top of the clamping block 29 and is threadedly connected to the clamping block 29. The lower end of the threaded rod 37 is rotatably connected to the top of the pressure block 36.
[0028] The paddle plates 43 are evenly distributed around the connecting column 25. The length of the paddle plates 43 is greater than the radius of the spiral cylinder 26. A gap is left between the limiting plate 23 near the feeding end and the outer surface of the spiral cylinder 26 for bamboo strips to pass through. The limiting plate 23 has a strip-shaped through hole for bamboo strips to pass through at the position of each paddle plate 43. Abutting blocks 24 are provided on both sides of the strip-shaped through hole. The abutting blocks 24 are fixedly connected to the limiting plate 23 near the feeding end. The pressing block 36 near the unfeeding end has a ramp 1 at the bottom of the end near the abutting block 24. The ramp 1 contacts the ramp 2 at the end of the abutting block 24 away from the limiting plate 23. When the clamping block 29 near the unfeeding end contacts the limiting plate 23 near the feeding end, the pressing block 36 is located on the top of the abutting block 24. The fixing seat 12 has a feed port 38 for bamboo strips to pass through at the position of each strip-shaped through hole.
[0029] The driving assembly includes a slider 30, a third rotating shaft 31, a fourth rotating shaft 32, a second gear 33, and a connector 34. The slider 30 is slidably connected to the base plate 7. A linear drive 39 is connected to the slider 30 to drive it to reciprocate along the bamboo strip feeding direction. The third rotating shaft 31 is vertically fixed to the top of the slider 30. One end of the fourth rotating shaft 32 is rotatably connected to the third rotating shaft 31 through a bearing. The second gear 33 is sleeved and fixedly connected to the fourth rotating shaft 32. The connector 34 is fixedly connected to the other end of the fourth rotating shaft 32. A rack 22 that meshes with the second gear 33 is fixedly installed on the limiting plate 23 near the feeding end through a fixing plate 21. When the slider 30 moves to the end of the rack 22, the second gear 33 drives the fourth rotating shaft 32 to rotate, causing the connector 34 to disengage from the movement trajectory of the sliding rod 28.
[0030] The linear drive 39 adopts an existing mature lead screw transmission mechanism, specifically including: a drive motor mounted below the base plate 7, two first bevel gears, a rotating shaft, two second bevel gears, a lead screw, and a guide rail. One first bevel gear and one second bevel gear are fixed to each end of the rotating shaft. The rotating shaft is rotatably mounted on the front end of the base plate 7. An extension plate is added to the bottom of the base plate 7, extending below the insulation cotton 15. The drive motor is fixedly mounted on the extension plate below the insulation cotton 15. The output shaft of the drive motor is fixedly connected to one of the first bevel gears, which transmits power to the other bevel gear meshing with it. A first bevel gear drives a rotating shaft to rotate, which in turn drives a second bevel gear at its other end to rotate. The rotating second bevel gear transmits the rotational power to another second bevel gear meshing with it. The second bevel gear is fixedly connected to one end of a lead screw, which is rotatably connected to the top of the base plate 7. A lead screw nut is fixedly connected to the end of a slider 30. The slider 30 and the lead screw nut are located on the same axis. The slider is sleeved on the lead screw, and a through hole is opened in the center of the slider to create a gap between the slider and the lead screw. The lead screw nut is threadedly connected to the lead screw. A guide rail is fixedly connected to the top of the base plate 7, and the slider 30 is slidably connected to the guide rail.
[0031] During operation, the drive motor drives the first bevel gear to rotate, which in turn drives the rotating shaft, the second bevel gear, and the lead screw to rotate. The lead screw drives the slider 30 to reciprocate along the guide rail via the lead screw nut. All electrical components are arranged below the base plate 7, and the heat of the shaping space is isolated by the heat insulation cotton 15, effectively avoiding the influence of high temperature on the drive components.
[0032] The feeding mechanism includes an electric push rod 2, a base plate 7, a movable plate 8, a slide rail 6, and rollers 40. There are two electric push rods 2, which are arranged horizontally along the bamboo strip feeding direction. The mounting end of the electric push rod 2 is fixedly connected to the machine body 1. The electric push rod 2 near the feeding end and the electric push rod 2 near the discharging end are independently controlled, which can realize the tilting unloading of the base plate 7. The bottom of the base plate 7 is fixedly connected to the movable end of the electric push rod 2. The slide rail 6 is fixedly connected to the top of the base plate 7. Multiple rollers 40 are rotatably connected to the bottom of the movable plate 8. The rollers 40 are rotatably connected to the slide rail 6, so that the movable plate 8 can slide along the slide rail 6. The connecting column 25 near the discharging end is fixedly connected to the movable plate 8 through the connecting plate 41.
[0033] Both ends of the base plate 7 are rotatably connected to a rotating shaft 9. A gear 10 and a stop bar 11 are fixedly connected to the rotating shaft 9. An installation part 13 is fixedly installed on the inner side of the machine body 1 at the position corresponding to the gear 10. A rack 14 is fixedly connected to the installation part 13. When the electric push rod 2 drives the base plate 7 to move downward, the gear 10 and the rack 14 mesh and drive the stop bar 11 to rotate, releasing the limit on the movable plate 8. Several long slots are opened at the top of the movable plate 8. The long slots are open near the feeding end. The rotating shaft 31 passes through the long slots.
[0034] The spiral cylinder 26 has axially extending grooves on both the upper and lower sides. The sliding rod 28 near the feeding end slides in the groove, allowing the ring 27 to slide along the axial direction of the spiral cylinder 26 to shape bamboo strips.
[0035] A heat insulation cotton 15 is fixedly connected to the bottom of the base plate 7. The heat insulation cotton 15 covers the entire lower surface of the base plate 7 and is used to isolate the heat of the molding space from being transferred downward to the electrical components inside the machine body 1. The heat insulation cotton 15 is an aluminum silicate needle-punched blanket. When the base plate 7 is tilted, the aluminum silicate needle-punched blanket can adapt to the height difference between the movable end of the two electric push rods 2 and the connection end of the heat insulation cotton 15 through local compression and stretching, and there will be no cracking or falling off.
[0036] Working principle: In the initial state, the movable plate 8 is located on the top of the base plate 7, and the baffle 11 is in a vertical state to limit the movable plate 8 on the base plate 7. The clamping block 29 near the unloading end is in contact with the limiting plate 23 near the loading end. The abutting block 24 lifts the pressure block 36 through the ramp engagement. The spring 35 is in a compressed state. The connecting piece 34 is located on the front and rear sides of the sliding rod 28 near the unloading end, which can drive the sliding rod 28 to move along the feeding direction. Both electric push rods 17 are in the extended state. The cross block 20 is fitted into the cross-shaped groove of the connecting column 25.
[0037] In use, the operator inserts the pre-softened bamboo strip into the feed port 38, through the strip-shaped through hole on the limiting plate 23, and places one end of the bamboo strip under the pressing block 36 in the clamping block 29 near the feeding end. The equipment is started, and the drive motor of the linear drive 39 runs, which drives the lead screw to rotate through the bevel gear set. The lead screw drives the slider 30 to move to the feeding end. The slider 30 drives the sliding rod 28 and the ring 27 near the feeding end to slide axially along the spiral cylinder 26 through the connecting piece 34, thereby driving one end of the bamboo strip to move to the feeding end.
[0038] When the clamping block 29 near the feeding end leaves the contact block 24, the restoring force of the spring 35 causes the pressure block 36 to move downward, tightly clamping the end of the bamboo strip. At the same time, the motor 42 near the feeding end starts, driving the rotating shaft 19 to rotate. The rotating shaft 19 drives the connecting column 25 to rotate through the cross block 20. The connecting column 25 drives the dial plate 43 to rotate. The dial plate 43 pushes the bamboo strip to evenly wind around the outer surface of the spiral cylinder 26, forming a spiral bending shape.
[0039] When the slider 30 moves to the position of rack 22, gear 23 meshes with rack 22. As the slider 30 continues to move, gear 23 drives shaft 4 32 to rotate, and shaft 4 32 drives connector 34 to rotate. When the slider 30 moves to the end of rack 22, connector 34 completely disengages from the movement trajectory of sliding rod 28, facilitating the separation of movable plate 8 from base plate 7. At this time, linear drive 39 and motor 42 stop simultaneously, completing the spiral shape of bamboo strip.
[0040] The operator opens the rotating cover 4, rotates the threaded rod 37 on the clamping block 29 near the feeding end, and moves the pressure block 36 downward to clamp the other end of the bamboo strip, ensuring that both ends of the bamboo strip are firmly fixed on the spiral cylinder 26. The operator closes the rotating cover 4, starts the steam generator 5, and the steam generator 5 evenly delivers high-temperature steam to the shaping space inside the heat insulation cover 3 to heat and shape the spirally formed bamboo strip.
[0041] After heating and shaping, the electric push rods 17 at both ends retract, causing the mounting plate 18 and the rotating shaft 19 to move outwards. This disengages the cross block 20 from the cross-shaped groove of the connecting column 25, releasing the connection between the machine body 1 and the movable plate 8. Simultaneously, the two electric push rods 2 are activated, causing the base plate 7 and the movable plate 8 to move downwards as a whole. During the descent, gear 10 meshes with rack 14, causing the rotating shaft 9 and the stop bar 11 to rotate. The stop bar 11 changes from a vertical to a horizontal position, releasing the restriction on the movable plate 8. When the base plate 7 descends to the predetermined position, the electric push rod 2 near the loading end stops running, and the electric push rod 2 near the unloading end continues to descend, causing the base plate 7 to tilt towards the unloading end. Under the action of gravity, the movable plate 8 slides down along the slide rail 6 via the roller 40. The movable plate 8 drives the spiral cylinder 26 wrapped with bamboo strips to slide out together via the connecting plate 41. The rotating shaft 31 disengages from the long groove, and the bottom end of the sliding rod 28 separates from the connecting piece 34. The movable plate 8 is directly transferred to the cooling process for cooling and shaping.
[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A multi-head spiral bending and forming device for bamboo strips, comprising a machine body (1), characterized in that: The machine body (1) is provided with a heating and shaping mechanism, which includes a steam generator (5), a heat insulation cover (3) and a rotating cover (4). The heat insulation cover (3) is fixedly connected to the top of the machine body (1). A shaping space is provided inside the heat insulation cover (3). The steam generator (5) is fixedly installed on the top of the heat insulation cover (3). The rotating cover (4) is hinged to the top of the heat insulation cover (3) away from the steam generator (5). The front end of the shaping space is the feeding end, and the rear end of the shaping space is the unloading end. Several feeding mechanisms are provided in the shaping space, and an unloading mechanism is provided at the bottom of the feeding mechanism. A separation mechanism is provided between the feeding mechanism and the machine body (1). The separation mechanism is used to install and separate the machine body (1) from the feeding mechanism. The separation mechanism includes a rotating shaft (19) driven by an electric push rod (17) of the feeding mechanism. There are two electric push rods (17) and they are symmetrically distributed front and back. A cross block (20) is fixedly connected to the end of the rotating shaft (19) away from the electric push rod (17). A connecting post (25) is fitted and movably connected to the end of the cross block (20) away from the rotating shaft (19). Several levers (43) are fixedly connected to the outer surface of the connecting post (25). The connecting column (25) is rotatably connected to a spiral cylinder (26) at the end away from the cross block (20). Two rings (27) are provided on the inner wall of the spiral cylinder (26). The ring (27) near the feeding end is fixedly connected to the spiral cylinder (26), and the ring (27) near the unloading end is slidably connected to the spiral cylinder (26). The rings (27) are vertically inserted and fixedly connected to sliding rods (28). The top of the sliding rods (28) is fixedly connected to clamping blocks (29). The clamping blocks (29) are provided with clamping drive parts. The bottom of the sliding rods (28) near the unloading end is detachably provided with a drive assembly.
2. The bamboo strip multi-head spiral bending and forming device according to claim 1, characterized in that: The steam outlet of the steam generator (5) extends to the top of the shaping space inside the heat insulation cover (3), and the steam outlets are evenly distributed towards the shaping space. The contact edge between the rotating cover (4) and the heat insulation cover (3) is provided with a high-temperature resistant sealing strip, and the top of the rotating cover (4) is provided with a handle for easy opening. The top of the machine body (1) is fixedly connected to a fixing (12), the top of the fixing seat (12) is fixedly connected to a fixing frame (16), the mounting end of the electric push rod (17) is fixedly installed on the fixing frame (16), the movable end of the electric push rod (17) is fixedly connected to a mounting plate (18), the front and rear ends of the top of the machine body (1) are fixedly connected to a limiting plate (23), the mounting plate (18) is located between the fixing frame (16) and the limiting plate (23), several rotating shafts (19) are rotatably connected to the mounting plate (18), several motors (42) are fixedly installed on the mounting plate (18) near the feeding end, and the output ends of several motors (42) are respectively fixedly connected to several rotating shafts (19).
3. The bamboo strip multi-head spiral bending and forming device according to claim 1, characterized in that: The connecting column (25) has a cross-shaped groove that matches the shape of the cross block (20) at one end near the cross block (20). The cross block (20) is fitted into the groove to achieve torque transmission. The spiral cylinder (26) is provided with a bearing seat at one end near the feeding end. The connecting column (25) near the feeding end is rotatably connected to the bearing seat through the bearing. The connecting column (25) near the discharging end is fixedly connected to the spiral cylinder (26) near the discharging end.
4. The bamboo strip multi-head spiral bending and forming device according to claim 2, characterized in that: The clamping drive unit includes a spring (35), a pressure block (36), and a threaded rod (37), located inside the clamping block (29) near the feeding end. The upper end of the spring (35) is fixedly connected to the inner wall of the top of the clamping block (29), and the lower end of the spring (35) is fixedly connected to the top of the pressure block (36), located inside the clamping block (29) near the unloading end. The threaded rod (37) vertically penetrates the top of the clamping block (29) and is threadedly connected to the clamping block (29). The lower end of the threaded rod (37) is rotatably connected to the top of the pressure block (36).
5. The bamboo strip multi-head spiral bending and forming device according to claim 2, characterized in that: The driving assembly includes a slider (30), a third rotating shaft (31), a fourth rotating shaft (32), a second gear (33), and a connecting piece (34); the slider (30) is slidably connected to the base plate (7), and a linear drive (39) is connected to the slider (30) to drive it to reciprocate along the bamboo strip feeding direction; the third rotating shaft (31) is vertically fixed to the top of the slider (30); one end of the fourth rotating shaft (32) is rotatably connected to the third rotating shaft (31) through a bearing; the second gear (33) 33) It is fitted and fixedly connected to the fourth rotating shaft (32); the connecting piece (34) is fixedly connected to the other end of the fourth rotating shaft (32). The limit plate (23) near the unloading end is fixedly installed with the rack (22) that meshes with the gear (33) through the fixing plate (21). When the slider (30) moves to the end of the rack (22), the gear (33) drives the fourth rotating shaft (32) to rotate, causing the connecting piece (34) to disengage from the movement trajectory of the sliding rod (28).
6. The bamboo strip multi-head spiral bending and forming device according to claim 4, characterized in that: The deflector plates (43) are evenly distributed around the connecting column (25). The length of the deflector plates (43) is greater than the radius of the spiral cylinder (26). A gap is left between the limiting plate (23) near the feeding end and the outer surface of the spiral cylinder (26) for the bamboo strip to pass through. A strip-shaped through hole is opened on the limiting plate (23) corresponding to the position of each deflector plate (43) for the bamboo strip to pass through. Abutment blocks (24) are provided on both sides of the strip-shaped through hole. The abutment blocks (24) and the limiting plate (26) near the feeding end are connected. 3) Fixed connection, the pressure block (36) near the unloading end has a ramp 1 at the bottom of the end near the contact block (24), and the ramp 1 contacts the ramp 2 at the end of the contact block (24) away from the limiting plate (23). When the clamping block (29) near the unloading end contacts the limiting plate (23) near the loading end, the pressure block (36) is located on the top of the contact block (24). The fixed seat (12) has a feed port (38) for bamboo strips to pass through at the position of each strip through hole.
7. The bamboo strip multi-head spiral bending and forming device according to claim 3, characterized in that: The feeding mechanism includes an electric push rod (2), a base plate (7), a movable plate (8), a slide rail (6), and rollers (40). There are two electric push rods (2), which are arranged horizontally along the bamboo strip feeding direction. The mounting end of the electric push rod (2) is fixedly connected to the machine body (1), and the electric push rod (2) near the feeding end and the electric push rod (2) near the discharging end are independently controlled, which can realize the tilting unloading of the base plate (7). The bottom of the base plate (7) is fixedly connected to the movable end of the electric push rod (2). The slide rail (6) is fixedly connected to the top of the base plate (7). The bottom of the movable plate (8) is rotatably connected to multiple rollers (40). The rollers (40) are rotatably connected to the slide rail (6), so that the movable plate (8) can slide along the slide rail (6). The connecting column (25) near the discharging end is fixedly connected to the movable plate (8) through the connecting plate (41).
8. The bamboo strip multi-head spiral bending and forming device according to claim 7, characterized in that: The base plate (7) is rotatably connected to two sides of both ends of a rotating shaft (9). A gear (10) and a stop bar (11) are fixedly connected to the rotating shaft (9). The inner side of the machine body (1) is fixedly connected to a rack (14) through a mounting piece (13) at the position corresponding to the gear (10). When the electric push rod (2) drives the base plate (7) to move downward, the gear (10) meshes with the rack (14) and drives the stop bar (11) to rotate, thereby releasing the limit on the movable plate (8).
9. The bamboo strip multi-head spiral bending and forming device according to claim 7, characterized in that: The spiral cylinder (26) has axially extending grooves on both the upper and lower sides. The sliding rod (28) near the feeding end slides in the groove, so that the ring (27) can slide along the axial direction of the spiral cylinder (26) to accommodate bamboo strips of different lengths.
10. The bamboo strip multi-head spiral bending and forming device according to claim 7, characterized in that: The bottom of the base plate (7) is fixedly connected to a heat insulation cotton (15). The heat insulation cotton (15) covers the entire lower surface of the base plate (7) and is used to isolate the heat of the shaping space from being transferred downward to the electrical components inside the machine body (1). The heat insulation cotton (15) is an aluminum silicate needle-punched blanket. When the base plate (7) is tilted, the aluminum silicate needle-punched blanket can adapt to the height difference between the movable end of the two electric push rods (2) and the connecting end of the heat insulation cotton (15) through local compression and stretching.